X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseLib%2FString.c;h=92992a5d27e0994ab50e41d6778b233c7974a773;hp=3236f4cfa67893966026fbefea3fc28a53ba3391;hb=881813d7a93d9009c873515b043c41c4554779e4;hpb=6a352324b99bf3c5e5b221781e9926c81c311748
diff --git a/MdePkg/Library/BaseLib/String.c b/MdePkg/Library/BaseLib/String.c
index 3236f4cfa6..92992a5d27 100644
--- a/MdePkg/Library/BaseLib/String.c
+++ b/MdePkg/Library/BaseLib/String.c
@@ -1,2071 +1,2103 @@
-/** @file
- Unicode and ASCII string primatives.
-
- Copyright (c) 2006 - 2007, Intel Corporation
- All rights reserved. This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- Module Name: String.c
-
-**/
-
-#include "BaseLibInternals.h"
-
-/**
- Copies one Null-terminated Unicode string to another Null-terminated Unicode
- string and returns the new Unicode string.
-
- This function copies the contents of the Unicode string Source to the Unicode
- string Destination, and returns Destination. If Source and Destination
- overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
-
- @return Destiantion
-
-**/
-CHAR16 *
-EFIAPI
-StrCpy (
- OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source
- )
-{
- CHAR16 *ReturnValue;
-
- //
- // Destination cannot be NULL
- //
- ASSERT (Destination != NULL);
- ASSERT (((UINTN) Destination & 0x01) == 0);
-
- //
- // Destination and source cannot overlap
- //
- ASSERT ((UINTN)(Destination - Source) > StrLen (Source));
- ASSERT ((UINTN)(Source - Destination) > StrLen (Source));
-
- ReturnValue = Destination;
- while (*Source) {
- *(Destination++) = *(Source++);
- }
- *Destination = 0;
- return ReturnValue;
-}
-
-/**
- Copies one Null-terminated Unicode string with a maximum length to another
- Null-terminated Unicode string with a maximum length and returns the new
- Unicode string.
-
- This function copies the contents of the Unicode string Source to the Unicode
- string Destination, and returns Destination. At most, Length Unicode
- characters are copied from Source to Destination. If Length is 0, then
- Destination is returned unmodified. If Length is greater that the number of
- Unicode characters in Source, then Destination is padded with Null Unicode
- characters. If Source and Destination overlap, then the results are
- undefined.
-
- If Length > 0 and Destination is NULL, then ASSERT().
- If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If Length > 0 and Source is not aligned on a 16-bit bounadry, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to copy.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrnCpy (
- OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source,
- IN UINTN Length
- )
-{
- CHAR16 *ReturnValue;
-
- if (Length == 0) {
- return Destination;
- }
-
- //
- // Destination cannot be NULL if Length is not zero
- //
- ASSERT (Destination != NULL);
- ASSERT (((UINTN) Destination & 0x01) == 0);
-
- //
- // Destination and source cannot overlap
- // Q: Does Source have to be NULL-terminated?
- //
- ASSERT ((UINTN)(Destination - Source) > StrLen (Source));
- ASSERT ((UINTN)(Source - Destination) >= Length);
-
- ReturnValue = Destination;
-
- while ((*Source != L'\0') && (Length > 0)) {
- *(Destination++) = *(Source++);
- Length--;
- }
-
- ZeroMem (Destination, Length * sizeof (*Destination));
- return ReturnValue;
-}
-
-/**
- Returns the length of a Null-terminated Unicode string.
-
- This function returns the number of Unicode characters in the Null-terminated
- Unicode string specified by String.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @return The length of String.
-
-**/
-UINTN
-EFIAPI
-StrLen (
- IN CONST CHAR16 *String
- )
-{
- UINTN Length;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
-
- for (Length = 0; *String != L'\0'; String++, Length++) {
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
- ASSERT (Length < PcdGet32 (PcdMaximumUnicodeStringLength));
- }
- }
- return Length;
-}
-
-/**
- Returns the size of a Null-terminated Unicode string in bytes, including the
- Null terminator.
-
- This function returns the size, in bytes, of the Null-terminated Unicode
- string specified by String.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @return The size of String.
-
-**/
-UINTN
-EFIAPI
-StrSize (
- IN CONST CHAR16 *String
- )
-{
- return (StrLen (String) + 1) * sizeof (*String);
-}
-
-/**
- Compares two Null-terminated Unicode strings, and returns the difference
- between the first mismatched Unicode characters.
-
- This function compares the Null-terminated Unicode string FirstString to the
- Null-terminated Unicode string SecondString. If FirstString is identical to
- SecondString, then 0 is returned. Otherwise, the value returned is the first
- mismatched Unicode character in SecondString subtracted from the first
- mismatched Unicode character in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If FirstString is not aligned on a 16-bit boundary, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If SecondString is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-StrCmp (
- IN CONST CHAR16 *FirstString,
- IN CONST CHAR16 *SecondString
- )
-{
- //
- // ASSERT both strings are less long than PcdMaximumUnicodeStringLength
- //
- ASSERT (StrSize (FirstString) != 0);
- ASSERT (StrSize (SecondString) != 0);
-
- while ((*FirstString != L'\0') && (*FirstString == *SecondString)) {
- FirstString++;
- SecondString++;
- }
- return *FirstString - *SecondString;
-}
-
-/**
- Compares two Null-terminated Unicode strings with maximum lengths, and
- returns the difference between the first mismatched Unicode characters.
-
- This function compares the Null-terminated Unicode string FirstString to the
- Null-terminated Unicode string SecondString. At most, Length Unicode
- characters will be compared. If Length is 0, then 0 is returned. If
- FirstString is identical to SecondString, then 0 is returned. Otherwise, the
- value returned is the first mismatched Unicode character in SecondString
- subtracted from the first mismatched Unicode character in FirstString.
-
- If Length > 0 and FirstString is NULL, then ASSERT().
- If Length > 0 and FirstString is not aligned on a 16-bit bounadary, then ASSERT().
- If Length > 0 and SecondString is NULL, then ASSERT().
- If Length > 0 and SecondString is not aligned on a 16-bit bounadary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to compare.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-StrnCmp (
- IN CONST CHAR16 *FirstString,
- IN CONST CHAR16 *SecondString,
- IN UINTN Length
- )
-{
- if (Length == 0) {
- return 0;
- }
-
- //
- // ASSERT both strings are less long than PcdMaximumUnicodeStringLength.
- // Length tests are performed inside StrLen().
- //
- ASSERT (StrSize (FirstString) != 0);
- ASSERT (StrSize (SecondString) != 0);
-
- while ((*FirstString != L'\0') &&
- (*FirstString == *SecondString) &&
- (Length > 1)) {
- FirstString++;
- SecondString++;
- Length--;
- }
-
- return *FirstString - *SecondString;
-}
-
-/**
- Concatenates one Null-terminated Unicode string to another Null-terminated
- Unicode string, and returns the concatenated Unicode string.
-
- This function concatenates two Null-terminated Unicode strings. The contents
- of Null-terminated Unicode string Source are concatenated to the end of
- Null-terminated Unicode string Destination. The Null-terminated concatenated
- Unicode String is returned. If Source and Destination overlap, then the
- results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
- and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrCat (
- IN OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source
- )
-{
- StrCpy (Destination + StrLen (Destination), Source);
-
- //
- // Size of the resulting string should never be zero.
- // PcdMaximumUnicodeStringLength is tested inside StrLen().
- //
- ASSERT (StrSize (Destination) != 0);
- return Destination;
-}
-
-/**
- Concatenates one Null-terminated Unicode string with a maximum length to the
- end of another Null-terminated Unicode string, and returns the concatenated
- Unicode string.
-
- This function concatenates two Null-terminated Unicode strings. The contents
- of Null-terminated Unicode string Source are concatenated to the end of
- Null-terminated Unicode string Destination, and Destination is returned. At
- most, Length Unicode characters are concatenated from Source to the end of
- Destination, and Destination is always Null-terminated. If Length is 0, then
- Destination is returned unmodified. If Source and Destination overlap, then
- the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
- and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to concatenate from
- Source.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrnCat (
- IN OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source,
- IN UINTN Length
- )
-{
- StrnCpy (Destination + StrLen (Destination), Source, Length);
-
- //
- // Size of the resulting string should never be zero.
- // PcdMaximumUnicodeStringLength is tested inside StrLen().
- //
- ASSERT (StrSize (Destination) != 0);
- return Destination;
-}
-
-/**
- Returns the first occurance of a Null-terminated Unicode sub-string
- in a Null-terminated Unicode string.
-
- This function scans the contents of the Null-terminated Unicode string
- specified by String and returns the first occurrence of SearchString.
- If SearchString is not found in String, then NULL is returned. If
- the length of SearchString is zero, then String is
- returned.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If SearchString is NULL, then ASSERT().
- If SearchString is not aligned on a 16-bit boundary, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and SearchString
- or String contains more than PcdMaximumUnicodeStringLength Unicode
- characters not including the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
- @param SearchString Pointer to a Null-terminated Unicode string to search for.
-
- @retval NULL If the SearchString does not appear in String.
- @retval !NULL If there is a match.
-
-**/
-CHAR16 *
-EFIAPI
-StrStr (
- IN CONST CHAR16 *String,
- IN CONST CHAR16 *SearchString
- )
-{
- CONST CHAR16 *FirstMatch;
- CONST CHAR16 *SearchStringTmp;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
- ASSERT (SearchString != NULL);
- ASSERT (((UINTN) SearchString & 0x01) == 0);
-
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length of String should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
- ASSERT (StrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
- }
-
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length of SearchString should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
- ASSERT (StrLen (SearchString) < PcdGet32 (PcdMaximumAsciiStringLength));
- }
-
- while (*String != '\0') {
- SearchStringTmp = SearchString;
- FirstMatch = String;
-
- while ((*String == *SearchStringTmp)
- && (*SearchStringTmp != '\0')
- && (*String != '\0')) {
- String++;
- SearchStringTmp++;
- }
-
- if (*SearchStringTmp == '\0') {
- return (CHAR16 *) FirstMatch;
- }
-
- if (SearchStringTmp == SearchString) {
- //
- // If no character from SearchString match,
- // move the pointer to the String under search
- // by one character.
- //
- String++;
- }
- }
-
- return NULL;
-}
-
-/**
- Check if a Unicode character is a decimal character.
-
- This internal function checks if a Unicode character is a
- decimal character. The valid decimal character is from
- L'0' to L'9'.
-
-
- @param Char The character to check against.
-
- @retval TRUE If the Char is a decmial character.
- @retval FALSE Otherwise.
-
-**/
-STATIC
-BOOLEAN
-InternalIsDecimalDigitCharacter (
- IN CHAR16 Char
- )
-{
- return (BOOLEAN) (Char >= L'0' && Char <= L'9');
-}
-
-/**
- Convert a Unicode character to upper case only if
- it maps to a valid small-case ASCII character.
-
- This internal function only deal with Unicode character
- which maps to a valid small-case ASII character, i.e.
- L'a' to L'z'. For other Unicode character, the input character
- is returned directly.
-
-
- @param Char The character to convert.
-
- @retval LowerCharacter If the Char is with range L'a' to L'z'.
- @retval Unchanged Otherwise.
-
-**/
-STATIC
-CHAR16
-InternalCharToUpper (
- IN CHAR16 Char
- )
-{
- if (Char >= L'a' && Char <= L'z') {
- return (CHAR16) (Char - (L'a' - L'A'));
- }
-
- return Char;
-}
-
-/**
- Convert a Unicode character to numerical value.
-
- This internal function only deal with Unicode character
- which maps to a valid hexadecimal ASII character, i.e.
- L'0' to L'9', L'a' to L'f' or L'A' to L'F'. For other
- Unicode character, the value returned does not make sense.
-
- @param Char The character to convert.
-
- @retval UINTN The numerical value converted.
-
-**/
-STATIC
-UINTN
-InternalHexCharToUintn (
- IN CHAR16 Char
- )
-{
- if (InternalIsDecimalDigitCharacter (Char)) {
- return Char - L'0';
- }
-
- return (UINTN) (10 + InternalCharToUpper (Char) - L'A');
-}
-
-/**
- Check if a Unicode character is a hexadecimal character.
-
- This internal function checks if a Unicode character is a
- decimal character. The valid hexadecimal character is
- L'0' to L'9', L'a' to L'f', or L'A' to L'F'.
-
-
- @param Char The character to check against.
-
- @retval TRUE If the Char is a hexadecmial character.
- @retval FALSE Otherwise.
-
-**/
-STATIC
-BOOLEAN
-InternalIsHexaDecimalDigitCharacter (
- IN CHAR16 Char
- )
-{
-
- return (BOOLEAN) (InternalIsDecimalDigitCharacter (Char) ||
- (Char >= L'A' && Char <= L'F') ||
- (Char >= L'a' && Char <= L'f'));
-}
-
-/**
- Convert a Null-terminated Unicode decimal string to a value of
- type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the Unicode string specified by String as a decimal number. The format
- of the input Unicode string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The
- function will ignore the pad space, which includes spaces or
- tab characters, before [decimal digits]. The running zero in the
- beginning of [decimal digits] will be ignored. Then, the function
- stops at the first character that is a not a valid decimal character
- or a Null-terminator, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits,
- then 0 is returned.
- If the number represented by String overflows according
- to the range defined by UINTN, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-StrDecimalToUintn (
- IN CONST CHAR16 *String
- )
-{
- UINTN Result;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
- ASSERT (StrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == L' ') || (*String == L'\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == L'0') {
- String++;
- }
-
- Result = 0;
-
- while (InternalIsDecimalDigitCharacter (*String)) {
- //
- // If the number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINTN_DIVIDED_BY_10) ||
- ((Result == QUIENT_MAX_UINTN_DIVIDED_BY_10) &&
- (*String - L'0') <= REMINDER_MAX_UINTN_DIVIDED_BY_10)
- );
-
- Result = Result * 10 + (*String - L'0');
- String++;
- }
-
- return Result;
-}
-
-
-/**
- Convert a Null-terminated Unicode decimal string to a value of
- type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the Unicode string specified by String as a decimal number. The format
- of the input Unicode string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The
- function will ignore the pad space, which includes spaces or
- tab characters, before [decimal digits]. The running zero in the
- beginning of [decimal digits] will be ignored. Then, the function
- stops at the first character that is a not a valid decimal character
- or a Null-terminator, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits,
- then 0 is returned.
- If the number represented by String overflows according
- to the range defined by UINT64, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-StrDecimalToUint64 (
- IN CONST CHAR16 *String
- )
-{
- UINT64 Result;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
- ASSERT (StrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == L' ') || (*String == L'\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == L'0') {
- String++;
- }
-
- Result = 0;
-
- while (InternalIsDecimalDigitCharacter (*String)) {
- //
- // If the number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINT64_DIVIDED_BY_10) ||
- ((Result == QUIENT_MAX_UINT64_DIVIDED_BY_10) &&
- (*String - L'0') <= REMINDER_MAX_UINT64_DIVIDED_BY_10)
- );
-
- Result = MultU64x32 (Result, 10) + (*String - L'0');
- String++;
- }
-
- return Result;
-}
-
-/**
- Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the Unicode string specified by String as a hexadecimal number.
- The format of the input Unicode string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
- If "x" appears in the input string, it must be prefixed with at least one 0.
- The function will ignore the pad space, which includes spaces or tab characters,
- before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
- [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
- first valid hexadecimal digit. Then, the function stops at the first character that is
- a not a valid hexadecimal character or NULL, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then zero is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
- then zero is returned.
- If the number represented by String overflows according to the range defined by
- UINTN, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-StrHexToUintn (
- IN CONST CHAR16 *String
- )
-{
- UINTN Result;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
- ASSERT (StrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == L' ') || (*String == L'\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == L'0') {
- String++;
- }
-
- if (InternalCharToUpper (*String) == L'X') {
- ASSERT (*(String - 1) == L'0');
- if (*(String - 1) != L'0') {
- return 0;
- }
- //
- // Skip the 'X'
- //
- String++;
- }
-
- Result = 0;
-
- while (InternalIsHexaDecimalDigitCharacter (*String)) {
- //
- // If the Hex Number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINTN_DIVIDED_BY_16) ||
- ((Result == QUIENT_MAX_UINTN_DIVIDED_BY_16) &&
- (InternalHexCharToUintn (*String) <= REMINDER_MAX_UINTN_DIVIDED_BY_16))
- );
-
- Result = (Result << 4) + InternalHexCharToUintn (*String);
- String++;
- }
-
- return Result;
-}
-
-
-/**
- Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the Unicode string specified by String as a hexadecimal number.
- The format of the input Unicode string String is
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
- If "x" appears in the input string, it must be prefixed with at least one 0.
- The function will ignore the pad space, which includes spaces or tab characters,
- before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
- [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
- first valid hexadecimal digit. Then, the function stops at the first character that is
- a not a valid hexadecimal character or NULL, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then zero is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
- then zero is returned.
- If the number represented by String overflows according to the range defined by
- UINT64, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-StrHexToUint64 (
- IN CONST CHAR16 *String
- )
-{
- UINT64 Result;
-
- ASSERT (String != NULL);
- ASSERT (((UINTN) String & 0x01) == 0);
- ASSERT (StrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == L' ') || (*String == L'\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == L'0') {
- String++;
- }
-
- if (InternalCharToUpper (*String) == L'X') {
- ASSERT (*(String - 1) == L'0');
- if (*(String - 1) != L'0') {
- return 0;
- }
- //
- // Skip the 'X'
- //
- String++;
- }
-
- Result = 0;
-
- while (InternalIsHexaDecimalDigitCharacter (*String)) {
- //
- // If the Hex Number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINT64_DIVIDED_BY_16)||
- ((Result == QUIENT_MAX_UINT64_DIVIDED_BY_16) &&
- (InternalHexCharToUintn (*String) <= REMINDER_MAX_UINT64_DIVIDED_BY_16))
- );
-
- Result = LShiftU64 (Result, 4);
- Result = Result + InternalHexCharToUintn (*String);
- String++;
- }
-
- return Result;
-}
-
-/**
- Check if a ASCII character is a decimal character.
-
- This internal function checks if a Unicode character is a
- decimal character. The valid decimal character is from
- '0' to '9'.
-
- @param Char The character to check against.
-
- @retval TRUE If the Char is a decmial character.
- @retval FALSE Otherwise.
-
-**/
-STATIC
-BOOLEAN
-InternalAsciiIsDecimalDigitCharacter (
- IN CHAR8 Char
- )
-{
- return (BOOLEAN) (Char >= '0' && Char <= '9');
-}
-
-/**
- Check if a ASCII character is a hexadecimal character.
-
- This internal function checks if a ASCII character is a
- decimal character. The valid hexadecimal character is
- L'0' to L'9', L'a' to L'f', or L'A' to L'F'.
-
-
- @param Char The character to check against.
-
- @retval TRUE If the Char is a hexadecmial character.
- @retval FALSE Otherwise.
-
-**/
-STATIC
-BOOLEAN
-InternalAsciiIsHexaDecimalDigitCharacter (
- IN CHAR8 Char
- )
-{
-
- return (BOOLEAN) (InternalAsciiIsDecimalDigitCharacter (Char) ||
- (Char >= 'A' && Char <= 'F') ||
- (Char >= 'a' && Char <= 'f'));
-}
-
-/**
- Convert a Null-terminated Unicode string to a Null-terminated
- ASCII string and returns the ASCII string.
-
- This function converts the content of the Unicode string Source
- to the ASCII string Destination by copying the lower 8 bits of
- each Unicode character. It returns Destination. The function terminates
- the ASCII string Destination by appending a Null-terminator character
- at the end. The caller is responsible to make sure Destination points
- to a buffer with size equal or greater than (StrLen (Source) + 1) in bytes.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
-
- If any Unicode characters in Source contain non-zero value in
- the upper 8 bits, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and Source contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- If PcdMaximumAsciiStringLength is not zero, and Source contains more
- than PcdMaximumAsciiStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Source Pointer to a Null-terminated Unicode string.
- @param Destination Pointer to a Null-terminated ASCII string.
-
- @reture Destination
-
-**/
-CHAR8 *
-EFIAPI
-UnicodeStrToAsciiStr (
- IN CONST CHAR16 *Source,
- OUT CHAR8 *Destination
- )
-{
- ASSERT (Destination != NULL);
- ASSERT (Source != NULL);
- ASSERT (((UINTN) Source & 0x01) == 0);
-
- //
- // Source and Destination should not overlap
- //
- ASSERT ((UINTN) ((CHAR16 *) Destination - Source) > StrLen (Source));
- ASSERT ((UINTN) ((CHAR8 *) Source - Destination) > StrLen (Source));
-
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length of Source should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
- ASSERT (StrLen (Source) < PcdGet32 (PcdMaximumUnicodeStringLength));
- }
-
- while (*Source != '\0') {
- //
- // If any Unicode characters in Source contain
- // non-zero value in the upper 8 bits, then ASSERT().
- //
- ASSERT (*Source < 0x100);
- *(Destination++) = (CHAR8) *(Source++);
- }
-
- *Destination = '\0';
-
- return Destination;
-}
-
-
-/**
- Copies one Null-terminated ASCII string to another Null-terminated ASCII
- string and returns the new ASCII string.
-
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. If Source and Destination
- overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source
- )
-{
- CHAR8 *ReturnValue;
-
- //
- // Destination cannot be NULL
- //
- ASSERT (Destination != NULL);
-
- //
- // Destination and source cannot overlap
- //
- ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));
- ASSERT ((UINTN)(Source - Destination) > AsciiStrLen (Source));
-
- ReturnValue = Destination;
- while (*Source) {
- *(Destination++) = *(Source++);
- }
- *Destination = 0;
- return ReturnValue;
-}
-
-/**
- Copies one Null-terminated ASCII string with a maximum length to another
- Null-terminated ASCII string with a maximum length and returns the new ASCII
- string.
-
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. At most, Length ASCII characters
- are copied from Source to Destination. If Length is 0, then Destination is
- returned unmodified. If Length is greater that the number of ASCII characters
- in Source, then Destination is padded with Null ASCII characters. If Source
- and Destination overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to copy.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrnCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source,
- IN UINTN Length
- )
-{
- CHAR8 *ReturnValue;
-
- if (Length == 0) {
- return Destination;
- }
-
- //
- // Destination cannot be NULL
- //
- ASSERT (Destination != NULL);
-
- //
- // Destination and source cannot overlap
- //
- ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));
- ASSERT ((UINTN)(Source - Destination) >= Length);
-
- ReturnValue = Destination;
-
- while (*Source && Length > 0) {
- *(Destination++) = *(Source++);
- Length--;
- }
-
- ZeroMem (Destination, Length * sizeof (*Destination));
- return ReturnValue;
-}
-
-/**
- Returns the length of a Null-terminated ASCII string.
-
- This function returns the number of ASCII characters in the Null-terminated
- ASCII string specified by String.
-
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @return The length of String.
-
-**/
-UINTN
-EFIAPI
-AsciiStrLen (
- IN CONST CHAR8 *String
- )
-{
- UINTN Length;
-
- ASSERT (String != NULL);
-
- for (Length = 0; *String != '\0'; String++, Length++) {
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
- ASSERT (Length < PcdGet32 (PcdMaximumAsciiStringLength));
- }
- }
- return Length;
-}
-
-/**
- Returns the size of a Null-terminated ASCII string in bytes, including the
- Null terminator.
-
- This function returns the size, in bytes, of the Null-terminated ASCII string
- specified by String.
-
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @return The size of String.
-
-**/
-UINTN
-EFIAPI
-AsciiStrSize (
- IN CONST CHAR8 *String
- )
-{
- return (AsciiStrLen (String) + 1) * sizeof (*String);
-}
-
-/**
- Compares two Null-terminated ASCII strings, and returns the difference
- between the first mismatched ASCII characters.
-
- This function compares the Null-terminated ASCII string FirstString to the
- Null-terminated ASCII string SecondString. If FirstString is identical to
- SecondString, then 0 is returned. Otherwise, the value returned is the first
- mismatched ASCII character in SecondString subtracted from the first
- mismatched ASCII character in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more
- than PcdMaximumAsciiStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-AsciiStrCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString
- )
-{
- //
- // ASSERT both strings are less long than PcdMaximumAsciiStringLength
- //
- ASSERT (AsciiStrSize (FirstString));
- ASSERT (AsciiStrSize (SecondString));
-
- while ((*FirstString != '\0') && (*FirstString == *SecondString)) {
- FirstString++;
- SecondString++;
- }
-
- return *FirstString - *SecondString;
-}
-
-/**
- Converts a lowercase Ascii character to upper one
-
- If Chr is lowercase Ascii character, then converts it to upper one.
-
- If Value >= 0xA0, then ASSERT().
- If (Value & 0x0F) >= 0x0A, then ASSERT().
-
- @param chr one Ascii character
-
- @return The uppercase value of Ascii character
-
-**/
-STATIC
-CHAR8
-AsciiToUpper (
- IN CHAR8 Chr
- )
-{
- return (UINT8) ((Chr >= 'a' && Chr <= 'z') ? Chr - ('a' - 'A') : Chr);
-}
-
-/**
- Convert a ASCII character to numerical value.
-
- This internal function only deal with Unicode character
- which maps to a valid hexadecimal ASII character, i.e.
- '0' to '9', 'a' to 'f' or 'A' to 'F'. For other
- ASCII character, the value returned does not make sense.
-
- @param Char The character to convert.
-
- @retval UINTN The numerical value converted.
-
-**/
-STATIC
-UINTN
-InternalAsciiHexCharToUintn (
- IN CHAR8 Char
- )
-{
- if (InternalIsDecimalDigitCharacter (Char)) {
- return Char - '0';
- }
-
- return (UINTN) (10 + AsciiToUpper (Char) - 'A');
-}
-
-
-/**
- Performs a case insensitive comparison of two Null-terminated ASCII strings,
- and returns the difference between the first mismatched ASCII characters.
-
- This function performs a case insensitive comparison of the Null-terminated
- ASCII string FirstString to the Null-terminated ASCII string SecondString. If
- FirstString is identical to SecondString, then 0 is returned. Otherwise, the
- value returned is the first mismatched lower case ASCII character in
- SecondString subtracted from the first mismatched lower case ASCII character
- in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more
- than PcdMaximumAsciiStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString using case insensitive
- comparisons.
- @retval !=0 FirstString is not identical to SecondString using case
- insensitive comparisons.
-
-**/
-INTN
-EFIAPI
-AsciiStriCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString
- )
-{
- CHAR8 UpperFirstString;
- CHAR8 UpperSecondString;
-
- //
- // ASSERT both strings are less long than PcdMaximumAsciiStringLength
- //
- ASSERT (AsciiStrSize (FirstString));
- ASSERT (AsciiStrSize (SecondString));
-
- UpperFirstString = AsciiToUpper (*FirstString);
- UpperSecondString = AsciiToUpper (*SecondString);
- while ((*FirstString != '\0') && (UpperFirstString == UpperSecondString)) {
- FirstString++;
- SecondString++;
- UpperFirstString = AsciiToUpper (*FirstString);
- UpperSecondString = AsciiToUpper (*SecondString);
- }
-
- return UpperFirstString - UpperSecondString;
-}
-
-/**
- Compares two Null-terminated ASCII strings with maximum lengths, and returns
- the difference between the first mismatched ASCII characters.
-
- This function compares the Null-terminated ASCII string FirstString to the
- Null-terminated ASCII string SecondString. At most, Length ASCII characters
- will be compared. If Length is 0, then 0 is returned. If FirstString is
- identical to SecondString, then 0 is returned. Otherwise, the value returned
- is the first mismatched ASCII character in SecondString subtracted from the
- first mismatched ASCII character in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-AsciiStrnCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString,
- IN UINTN Length
- )
-{
- if (Length == 0) {
- return 0;
- }
-
- //
- // ASSERT both strings are less long than PcdMaximumAsciiStringLength
- //
- ASSERT (AsciiStrSize (FirstString));
- ASSERT (AsciiStrSize (SecondString));
-
- while ((*FirstString != '\0') &&
- (*FirstString == *SecondString) &&
- (Length > 1)) {
- FirstString++;
- SecondString++;
- Length--;
- }
- return *FirstString - *SecondString;
-}
-
-/**
- Concatenates one Null-terminated ASCII string to another Null-terminated
- ASCII string, and returns the concatenated ASCII string.
-
- This function concatenates two Null-terminated ASCII strings. The contents of
- Null-terminated ASCII string Source are concatenated to the end of Null-
- terminated ASCII string Destination. The Null-terminated concatenated ASCII
- String is returned.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Destination contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and concatenating Destination and
- Source results in a ASCII string with more than PcdMaximumAsciiStringLength
- ASCII characters, then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrCat (
- IN OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source
- )
-{
- AsciiStrCpy (Destination + AsciiStrLen (Destination), Source);
-
- //
- // Size of the resulting string should never be zero.
- // PcdMaximumUnicodeStringLength is tested inside StrLen().
- //
- ASSERT (AsciiStrSize (Destination) != 0);
- return Destination;
-}
-
-/**
- Concatenates one Null-terminated ASCII string with a maximum length to the
- end of another Null-terminated ASCII string, and returns the concatenated
- ASCII string.
-
- This function concatenates two Null-terminated ASCII strings. The contents
- of Null-terminated ASCII string Source are concatenated to the end of Null-
- terminated ASCII string Destination, and Destination is returned. At most,
- Length ASCII characters are concatenated from Source to the end of
- Destination, and Destination is always Null-terminated. If Length is 0, then
- Destination is returned unmodified. If Source and Destination overlap, then
- the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Destination contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and
- Source results in a ASCII string with more than PcdMaximumAsciiStringLength
- ASCII characters not including the Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to concatenate from
- Source.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrnCat (
- IN OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source,
- IN UINTN Length
- )
-{
- AsciiStrnCpy (Destination + AsciiStrLen (Destination), Source, Length);
-
- //
- // Size of the resulting string should never be zero.
- // PcdMaximumUnicodeStringLength is tested inside StrLen().
- //
- ASSERT (AsciiStrSize (Destination) != 0);
- return Destination;
-}
-
-/**
- Returns the first occurance of a Null-terminated ASCII sub-string
- in a Null-terminated ASCII string.
-
- This function scans the contents of the ASCII string specified by String
- and returns the first occurrence of SearchString. If SearchString is not
- found in String, then NULL is returned. If the length of SearchString is zero,
- then String is returned.
-
- If String is NULL, then ASSERT().
- If SearchString is NULL, then ASSERT().
-
- If PcdMaximumAsciiStringLength is not zero, and SearchString or
- String contains more than PcdMaximumAsciiStringLength Unicode characters
- not including the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
- @param SearchString Pointer to a Null-terminated ASCII string to search for.
-
- @retval NULL If the SearchString does not appear in String.
- @retval !NULL If there is a match.
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrStr (
- IN CONST CHAR8 *String,
- IN CONST CHAR8 *SearchString
- )
-{
- CONST CHAR8 *FirstMatch;
- CONST CHAR8 *SearchStringTmp;
-
- ASSERT (String != NULL);
- ASSERT (SearchString != NULL);
-
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length of String should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
- ASSERT (AsciiStrLen (String) < PcdGet32 (PcdMaximumAsciiStringLength));
- }
-
- //
- // If PcdMaximumUnicodeStringLength is not zero,
- // length of SearchString should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
- ASSERT (AsciiStrLen (SearchString) < PcdGet32 (PcdMaximumAsciiStringLength));
- }
-
- while (*String != '\0') {
- SearchStringTmp = SearchString;
- FirstMatch = String;
-
- while ((*String == *SearchStringTmp)
- && (*SearchStringTmp != '\0')
- && (*String != '\0')) {
- String++;
- SearchStringTmp++;
- }
-
- if (*SearchStringTmp == '\0') {
- return (CHAR8 *) FirstMatch;
- }
-
- if (SearchStringTmp == SearchString) {
- //
- // If no character from SearchString match,
- // move the pointer to the String under search
- // by one character.
- //
- String++;
- }
-
- }
-
- return NULL;
-}
-
-/**
- Convert a Null-terminated ASCII decimal string to a value of type
- UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the ASCII string String as a decimal number. The format of the input
- ASCII string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The function will
- ignore the pad space, which includes spaces or tab characters, before the digits.
- The running zero in the beginning of [decimal digits] will be ignored. Then, the
- function stops at the first character that is a not a valid decimal character or
- Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits, then 0 is returned.
- If the number represented by String overflows according to the range defined by
- UINTN, then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-AsciiStrDecimalToUintn (
- IN CONST CHAR8 *String
- )
-{
- UINTN Result;
-
- ASSERT (String != NULL);
- ASSERT (AsciiStrLen (String) < PcdGet32 (PcdMaximumAsciiStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == ' ') || (*String == '\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == '0') {
- String++;
- }
-
- Result = 0;
-
- while (InternalAsciiIsDecimalDigitCharacter (*String)) {
- //
- // If the number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINTN_DIVIDED_BY_10) ||
- ((Result == QUIENT_MAX_UINTN_DIVIDED_BY_10) &&
- (*String - '0') <= REMINDER_MAX_UINTN_DIVIDED_BY_10)
- );
-
- Result = Result * 10 + (*String - '0');
- String++;
- }
-
- return Result;
-}
-
-
-/**
- Convert a Null-terminated ASCII decimal string to a value of type
- UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the ASCII string String as a decimal number. The format of the input
- ASCII string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The function will
- ignore the pad space, which includes spaces or tab characters, before the digits.
- The running zero in the beginning of [decimal digits] will be ignored. Then, the
- function stops at the first character that is a not a valid decimal character or
- Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits, then 0 is returned.
- If the number represented by String overflows according to the range defined by
- UINT64, then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-AsciiStrDecimalToUint64 (
- IN CONST CHAR8 *String
- )
-{
- UINT64 Result;
-
- ASSERT (String != NULL);
- ASSERT (AsciiStrLen (String) < PcdGet32 (PcdMaximumAsciiStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == ' ') || (*String == '\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == '0') {
- String++;
- }
-
- Result = 0;
-
- while (InternalAsciiIsDecimalDigitCharacter (*String)) {
- //
- // If the number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINT64_DIVIDED_BY_10) ||
- ((Result == QUIENT_MAX_UINT64_DIVIDED_BY_10) &&
- (*String - '0') <= REMINDER_MAX_UINT64_DIVIDED_BY_10)
- );
-
- Result = MultU64x32 (Result, 10) + (*String - '0');
- String++;
- }
-
- return Result;
-}
-
-/**
- Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents of
- the ASCII string String as a hexadecimal number. The format of the input ASCII
- string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
- appears in the input string, it must be prefixed with at least one 0. The function
- will ignore the pad space, which includes spaces or tab characters, before [zeros],
- [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
- will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
- digit. Then, the function stops at the first character that is a not a valid
- hexadecimal character or Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
- 0 is returned.
-
- If the number represented by String overflows according to the range defined by UINTN,
- then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero,
- and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-AsciiStrHexToUintn (
- IN CONST CHAR8 *String
- )
-{
- UINTN Result;
-
- ASSERT (String != NULL);
- ASSERT (AsciiStrLen (String) < PcdGet32 (PcdMaximumAsciiStringLength));
-
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == ' ') || (*String == '\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == '0') {
- String++;
- }
-
- if (AsciiToUpper (*String) == 'X') {
- ASSERT (*(String - 1) == '0');
- if (*(String - 1) != '0') {
- return 0;
- }
- //
- // Skip the 'X'
- //
- String++;
- }
-
- Result = 0;
-
- while (InternalAsciiIsHexaDecimalDigitCharacter (*String)) {
- //
- // If the Hex Number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINTN_DIVIDED_BY_16) ||
- ((Result == QUIENT_MAX_UINTN_DIVIDED_BY_16) &&
- (InternalAsciiHexCharToUintn (*String) <= REMINDER_MAX_UINTN_DIVIDED_BY_16))
- );
-
- Result = (Result << 4) + InternalAsciiHexCharToUintn (*String);
- String++;
- }
-
- return Result;
-}
-
-
-/**
- Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents of
- the ASCII string String as a hexadecimal number. The format of the input ASCII
- string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
- appears in the input string, it must be prefixed with at least one 0. The function
- will ignore the pad space, which includes spaces or tab characters, before [zeros],
- [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
- will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
- digit. Then, the function stops at the first character that is a not a valid
- hexadecimal character or Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
- 0 is returned.
-
- If the number represented by String overflows according to the range defined by UINT64,
- then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero,
- and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-AsciiStrHexToUint64 (
- IN CONST CHAR8 *String
- )
-{
- UINT64 Result;
-
- ASSERT (String != NULL);
- ASSERT (AsciiStrLen (String) < PcdGet32 (PcdMaximumUnicodeStringLength));
-
- //
- // Ignore the pad spaces (space or tab) and leading Zeros
- //
- //
- // Ignore the pad spaces (space or tab)
- //
- while ((*String == ' ') || (*String == '\t')) {
- String++;
- }
-
- //
- // Ignore leading Zeros after the spaces
- //
- while (*String == '0') {
- String++;
- }
-
- if (AsciiToUpper (*String) == 'X') {
- ASSERT (*(String - 1) == '0');
- if (*(String - 1) != '0') {
- return 0;
- }
- //
- // Skip the 'X'
- //
- String++;
- }
-
- Result = 0;
-
- while (InternalAsciiIsHexaDecimalDigitCharacter (*String)) {
- //
- // If the Hex Number represented by String overflows according
- // to the range defined by UINTN, then ASSERT().
- //
- ASSERT ((Result < QUIENT_MAX_UINT64_DIVIDED_BY_16) ||
- ((Result == QUIENT_MAX_UINT64_DIVIDED_BY_16) &&
- (InternalAsciiHexCharToUintn (*String) <= REMINDER_MAX_UINT64_DIVIDED_BY_16))
- );
-
- Result = LShiftU64 (Result, 4);
- Result = Result + InternalAsciiHexCharToUintn (*String);
- String++;
- }
-
- return Result;
-}
-
-
-/**
- Convert one Null-terminated ASCII string to a Null-terminated
- Unicode string and returns the Unicode string.
-
- This function converts the contents of the ASCII string Source to the Unicode
- string Destination, and returns Destination. The function terminates the
- Unicode string Destination by appending a Null-terminator character at the end.
- The caller is responsible to make sure Destination points to a buffer with size
- equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
-
- If Destination is NULL, then ASSERT().
- If Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param Source Pointer to a Null-terminated ASCII string.
- @param Destination Pointer to a Null-terminated Unicode string.
-
- @reture Destination
-
-**/
-CHAR16 *
-EFIAPI
-AsciiStrToUnicodeStr (
- IN CONST CHAR8 *Source,
- OUT CHAR16 *Destination
- )
-{
- ASSERT (Destination != NULL);
- ASSERT (Source != NULL);
-
- //
- // Source and Destination should not overlap
- //
- ASSERT ((UINTN) ((CHAR8 *) Destination - Source) > AsciiStrLen (Source));
- ASSERT ((UINTN) (Source - (CHAR8 *) Destination) > (AsciiStrLen (Source) * sizeof (CHAR16)));
-
- //
- // If PcdMaximumAsciiStringLength is not zero,
- // length of Source should not more than PcdMaximumUnicodeStringLength
- //
- if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
- ASSERT (AsciiStrLen (Source) < PcdGet32 (PcdMaximumAsciiStringLength));
- }
-
- while (*Source != '\0') {
- *(Destination++) = (CHAR16) *(Source++);
- }
- //
- // End the Destination with a NULL.
- //
- *Destination = '\0';
-
- return Destination;
-}
-
-/**
- Converts an 8-bit value to an 8-bit BCD value.
-
- Converts the 8-bit value specified by Value to BCD. The BCD value is
- returned.
-
- If Value >= 100, then ASSERT().
-
- @param Value The 8-bit value to convert to BCD. Range 0..99.
-
- @return The BCD value
-
-**/
-UINT8
-EFIAPI
-DecimalToBcd8 (
- IN UINT8 Value
- )
-{
- ASSERT (Value < 100);
- return (UINT8) (((Value / 10) << 4) | (Value % 10));
-}
-
-/**
- Converts an 8-bit BCD value to an 8-bit value.
-
- Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
- value is returned.
-
- If Value >= 0xA0, then ASSERT().
- If (Value & 0x0F) >= 0x0A, then ASSERT().
-
- @param Value The 8-bit BCD value to convert to an 8-bit value.
-
- @return The 8-bit value is returned.
-
-**/
-UINT8
-EFIAPI
-BcdToDecimal8 (
- IN UINT8 Value
- )
-{
- ASSERT (Value < 0xa0);
- ASSERT ((Value & 0xf) < 0xa);
- return (UINT8) ((Value >> 4) * 10 + (Value & 0xf));
-}
-
-
+/** @file
+ Unicode and ASCII string primatives.
+
+ Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "BaseLibInternals.h"
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Copies one Null-terminated Unicode string to another Null-terminated Unicode
+ string and returns the new Unicode string.
+
+ This function copies the contents of the Unicode string Source to the Unicode
+ string Destination, and returns Destination. If Source and Destination
+ overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param Source A pointer to a Null-terminated Unicode string.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+StrCpy (
+ OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source
+ )
+{
+ CHAR16 *ReturnValue;
+
+ //
+ // Destination cannot be NULL
+ //
+ ASSERT (Destination != NULL);
+ ASSERT (((UINTN) Destination & BIT0) == 0);
+
+ //
+ // Destination and source cannot overlap
+ //
+ ASSERT ((UINTN)(Destination - Source) > StrLen (Source));
+ ASSERT ((UINTN)(Source - Destination) > StrLen (Source));
+
+ ReturnValue = Destination;
+ while (*Source != 0) {
+ *(Destination++) = *(Source++);
+ }
+ *Destination = 0;
+ return ReturnValue;
+}
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Copies up to a specified length from one Null-terminated Unicode string to
+ another Null-terminated Unicode string and returns the new Unicode string.
+
+ This function copies the contents of the Unicode string Source to the Unicode
+ string Destination, and returns Destination. At most, Length Unicode
+ characters are copied from Source to Destination. If Length is 0, then
+ Destination is returned unmodified. If Length is greater that the number of
+ Unicode characters in Source, then Destination is padded with Null Unicode
+ characters. If Source and Destination overlap, then the results are
+ undefined.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param Source A pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to copy.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+StrnCpy (
+ OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ )
+{
+ CHAR16 *ReturnValue;
+
+ if (Length == 0) {
+ return Destination;
+ }
+
+ //
+ // Destination cannot be NULL if Length is not zero
+ //
+ ASSERT (Destination != NULL);
+ ASSERT (((UINTN) Destination & BIT0) == 0);
+
+ //
+ // Destination and source cannot overlap
+ //
+ ASSERT ((UINTN)(Destination - Source) > StrLen (Source));
+ ASSERT ((UINTN)(Source - Destination) >= Length);
+
+ if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
+ ASSERT (Length <= PcdGet32 (PcdMaximumUnicodeStringLength));
+ }
+
+ ReturnValue = Destination;
+
+ while ((*Source != L'\0') && (Length > 0)) {
+ *(Destination++) = *(Source++);
+ Length--;
+ }
+
+ ZeroMem (Destination, Length * sizeof (*Destination));
+ return ReturnValue;
+}
+#endif
+
+/**
+ Returns the length of a Null-terminated Unicode string.
+
+ This function returns the number of Unicode characters in the Null-terminated
+ Unicode string specified by String.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @return The length of String.
+
+**/
+UINTN
+EFIAPI
+StrLen (
+ IN CONST CHAR16 *String
+ )
+{
+ UINTN Length;
+
+ ASSERT (String != NULL);
+ ASSERT (((UINTN) String & BIT0) == 0);
+
+ for (Length = 0; *String != L'\0'; String++, Length++) {
+ //
+ // If PcdMaximumUnicodeStringLength is not zero,
+ // length should not more than PcdMaximumUnicodeStringLength
+ //
+ if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
+ ASSERT (Length < PcdGet32 (PcdMaximumUnicodeStringLength));
+ }
+ }
+ return Length;
+}
+
+/**
+ Returns the size of a Null-terminated Unicode string in bytes, including the
+ Null terminator.
+
+ This function returns the size, in bytes, of the Null-terminated Unicode string
+ specified by String.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @return The size of String.
+
+**/
+UINTN
+EFIAPI
+StrSize (
+ IN CONST CHAR16 *String
+ )
+{
+ return (StrLen (String) + 1) * sizeof (*String);
+}
+
+/**
+ Compares two Null-terminated Unicode strings, and returns the difference
+ between the first mismatched Unicode characters.
+
+ This function compares the Null-terminated Unicode string FirstString to the
+ Null-terminated Unicode string SecondString. If FirstString is identical to
+ SecondString, then 0 is returned. Otherwise, the value returned is the first
+ mismatched Unicode character in SecondString subtracted from the first
+ mismatched Unicode character in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If FirstString is not aligned on a 16-bit boundary, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If SecondString is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString A pointer to a Null-terminated Unicode string.
+ @param SecondString A pointer to a Null-terminated Unicode string.
+
+ @retval 0 FirstString is identical to SecondString.
+ @return others FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+StrCmp (
+ IN CONST CHAR16 *FirstString,
+ IN CONST CHAR16 *SecondString
+ )
+{
+ //
+ // ASSERT both strings are less long than PcdMaximumUnicodeStringLength
+ //
+ ASSERT (StrSize (FirstString) != 0);
+ ASSERT (StrSize (SecondString) != 0);
+
+ while ((*FirstString != L'\0') && (*FirstString == *SecondString)) {
+ FirstString++;
+ SecondString++;
+ }
+ return *FirstString - *SecondString;
+}
+
+/**
+ Compares up to a specified length the contents of two Null-terminated Unicode strings,
+ and returns the difference between the first mismatched Unicode characters.
+
+ This function compares the Null-terminated Unicode string FirstString to the
+ Null-terminated Unicode string SecondString. At most, Length Unicode
+ characters will be compared. If Length is 0, then 0 is returned. If
+ FirstString is identical to SecondString, then 0 is returned. Otherwise, the
+ value returned is the first mismatched Unicode character in SecondString
+ subtracted from the first mismatched Unicode character in FirstString.
+
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and FirstString is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If Length > 0 and SecondString is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param FirstString A pointer to a Null-terminated Unicode string.
+ @param SecondString A pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to compare.
+
+ @retval 0 FirstString is identical to SecondString.
+ @return others FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+StrnCmp (
+ IN CONST CHAR16 *FirstString,
+ IN CONST CHAR16 *SecondString,
+ IN UINTN Length
+ )
+{
+ if (Length == 0) {
+ return 0;
+ }
+
+ //
+ // ASSERT both strings are less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (FirstString) != 0);
+ ASSERT (StrSize (SecondString) != 0);
+
+ if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {
+ ASSERT (Length <= PcdGet32 (PcdMaximumUnicodeStringLength));
+ }
+
+ while ((*FirstString != L'\0') &&
+ (*FirstString == *SecondString) &&
+ (Length > 1)) {
+ FirstString++;
+ SecondString++;
+ Length--;
+ }
+
+ return *FirstString - *SecondString;
+}
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Concatenates one Null-terminated Unicode string to another Null-terminated
+ Unicode string, and returns the concatenated Unicode string.
+
+ This function concatenates two Null-terminated Unicode strings. The contents
+ of Null-terminated Unicode string Source are concatenated to the end of
+ Null-terminated Unicode string Destination. The Null-terminated concatenated
+ Unicode String is returned. If Source and Destination overlap, then the
+ results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
+ and Source results in a Unicode string with more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param Source A pointer to a Null-terminated Unicode string.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+StrCat (
+ IN OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source
+ )
+{
+ StrCpy (Destination + StrLen (Destination), Source);
+
+ //
+ // Size of the resulting string should never be zero.
+ // PcdMaximumUnicodeStringLength is tested inside StrLen().
+ //
+ ASSERT (StrSize (Destination) != 0);
+ return Destination;
+}
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Concatenates up to a specified length one Null-terminated Unicode to the end
+ of another Null-terminated Unicode string, and returns the concatenated
+ Unicode string.
+
+ This function concatenates two Null-terminated Unicode strings. The contents
+ of Null-terminated Unicode string Source are concatenated to the end of
+ Null-terminated Unicode string Destination, and Destination is returned. At
+ most, Length Unicode characters are concatenated from Source to the end of
+ Destination, and Destination is always Null-terminated. If Length is 0, then
+ Destination is returned unmodified. If Source and Destination overlap, then
+ the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Length is greater than
+ PcdMaximumUnicodeStringLength, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
+ than PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
+ and Source results in a Unicode string with more than PcdMaximumUnicodeStringLength
+ Unicode characters, not including the Null-terminator, then ASSERT().
+
+ @param Destination A pointer to a Null-terminated Unicode string.
+ @param Source A pointer to a Null-terminated Unicode string.
+ @param Length The maximum number of Unicode characters to concatenate from
+ Source.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+StrnCat (
+ IN OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ )
+{
+ UINTN DestinationLen;
+
+ DestinationLen = StrLen (Destination);
+ StrnCpy (Destination + DestinationLen, Source, Length);
+ Destination[DestinationLen + Length] = L'\0';
+
+ //
+ // Size of the resulting string should never be zero.
+ // PcdMaximumUnicodeStringLength is tested inside StrLen().
+ //
+ ASSERT (StrSize (Destination) != 0);
+ return Destination;
+}
+#endif
+
+/**
+ Returns the first occurrence of a Null-terminated Unicode sub-string
+ in a Null-terminated Unicode string.
+
+ This function scans the contents of the Null-terminated Unicode string
+ specified by String and returns the first occurrence of SearchString.
+ If SearchString is not found in String, then NULL is returned. If
+ the length of SearchString is zero, then String is
+ returned.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If SearchString is NULL, then ASSERT().
+ If SearchString is not aligned on a 16-bit boundary, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and SearchString
+ or String contains more than PcdMaximumUnicodeStringLength Unicode
+ characters, not including the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+ @param SearchString A pointer to a Null-terminated Unicode string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @return others If there is a match.
+
+**/
+CHAR16 *
+EFIAPI
+StrStr (
+ IN CONST CHAR16 *String,
+ IN CONST CHAR16 *SearchString
+ )
+{
+ CONST CHAR16 *FirstMatch;
+ CONST CHAR16 *SearchStringTmp;
+
+ //
+ // ASSERT both strings are less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (String) != 0);
+ ASSERT (StrSize (SearchString) != 0);
+
+ if (*SearchString == L'\0') {
+ return (CHAR16 *) String;
+ }
+
+ while (*String != L'\0') {
+ SearchStringTmp = SearchString;
+ FirstMatch = String;
+
+ while ((*String == *SearchStringTmp)
+ && (*String != L'\0')) {
+ String++;
+ SearchStringTmp++;
+ }
+
+ if (*SearchStringTmp == L'\0') {
+ return (CHAR16 *) FirstMatch;
+ }
+
+ if (*String == L'\0') {
+ return NULL;
+ }
+
+ String = FirstMatch + 1;
+ }
+
+ return NULL;
+}
+
+/**
+ Check if a Unicode character is a decimal character.
+
+ This internal function checks if a Unicode character is a
+ decimal character. The valid decimal character is from
+ L'0' to L'9'.
+
+ @param Char The character to check against.
+
+ @retval TRUE If the Char is a decmial character.
+ @retval FALSE If the Char is not a decmial character.
+
+**/
+BOOLEAN
+EFIAPI
+InternalIsDecimalDigitCharacter (
+ IN CHAR16 Char
+ )
+{
+ return (BOOLEAN) (Char >= L'0' && Char <= L'9');
+}
+
+/**
+ Convert a Unicode character to upper case only if
+ it maps to a valid small-case ASCII character.
+
+ This internal function only deal with Unicode character
+ which maps to a valid small-case ASCII character, i.e.
+ L'a' to L'z'. For other Unicode character, the input character
+ is returned directly.
+
+ @param Char The character to convert.
+
+ @retval LowerCharacter If the Char is with range L'a' to L'z'.
+ @retval Unchanged Otherwise.
+
+**/
+CHAR16
+EFIAPI
+InternalCharToUpper (
+ IN CHAR16 Char
+ )
+{
+ if (Char >= L'a' && Char <= L'z') {
+ return (CHAR16) (Char - (L'a' - L'A'));
+ }
+
+ return Char;
+}
+
+/**
+ Convert a Unicode character to numerical value.
+
+ This internal function only deal with Unicode character
+ which maps to a valid hexadecimal ASII character, i.e.
+ L'0' to L'9', L'a' to L'f' or L'A' to L'F'. For other
+ Unicode character, the value returned does not make sense.
+
+ @param Char The character to convert.
+
+ @return The numerical value converted.
+
+**/
+UINTN
+EFIAPI
+InternalHexCharToUintn (
+ IN CHAR16 Char
+ )
+{
+ if (InternalIsDecimalDigitCharacter (Char)) {
+ return Char - L'0';
+ }
+
+ return (UINTN) (10 + InternalCharToUpper (Char) - L'A');
+}
+
+/**
+ Check if a Unicode character is a hexadecimal character.
+
+ This internal function checks if a Unicode character is a
+ decimal character. The valid hexadecimal character is
+ L'0' to L'9', L'a' to L'f', or L'A' to L'F'.
+
+
+ @param Char The character to check against.
+
+ @retval TRUE If the Char is a hexadecmial character.
+ @retval FALSE If the Char is not a hexadecmial character.
+
+**/
+BOOLEAN
+EFIAPI
+InternalIsHexaDecimalDigitCharacter (
+ IN CHAR16 Char
+ )
+{
+
+ return (BOOLEAN) (InternalIsDecimalDigitCharacter (Char) ||
+ (Char >= L'A' && Char <= L'F') ||
+ (Char >= L'a' && Char <= L'f'));
+}
+
+/**
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters, not including
+ the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
+
+**/
+UINTN
+EFIAPI
+StrDecimalToUintn (
+ IN CONST CHAR16 *String
+ )
+{
+ UINTN Result;
+
+ //
+ // ASSERT String is less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == L' ') || (*String == L'\t')) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == L'0') {
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalIsDecimalDigitCharacter (*String)) {
+ //
+ // If the number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= ((((UINTN) ~0) - (*String - L'0')) / 10));
+
+ Result = Result * 10 + (*String - L'0');
+ String++;
+ }
+
+ return Result;
+}
+
+
+/**
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINT64, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters, not including
+ the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+StrDecimalToUint64 (
+ IN CONST CHAR16 *String
+ )
+{
+ UINT64 Result;
+
+ //
+ // ASSERT String is less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == L' ') || (*String == L'\t')) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == L'0') {
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalIsDecimalDigitCharacter (*String)) {
+ //
+ // If the number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= DivU64x32 (((UINT64) ~0) - (*String - L'0') , 10));
+
+ Result = MultU64x32 (Result, 10) + (*String - L'0');
+ String++;
+ }
+
+ return Result;
+}
+
+/**
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character that is
+ a not a valid hexadecimal character or NULL, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
+
+**/
+UINTN
+EFIAPI
+StrHexToUintn (
+ IN CONST CHAR16 *String
+ )
+{
+ UINTN Result;
+
+ //
+ // ASSERT String is less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == L' ') || (*String == L'\t')) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == L'0') {
+ String++;
+ }
+
+ if (InternalCharToUpper (*String) == L'X') {
+ if (*(String - 1) != L'0') {
+ return 0;
+ }
+ //
+ // Skip the 'X'
+ //
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalIsHexaDecimalDigitCharacter (*String)) {
+ //
+ // If the Hex Number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= ((((UINTN) ~0) - InternalHexCharToUintn (*String)) >> 4));
+
+ Result = (Result << 4) + InternalHexCharToUintn (*String);
+ String++;
+ }
+
+ return Result;
+}
+
+
+/**
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character that is
+ a not a valid hexadecimal character or NULL, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated Unicode string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+StrHexToUint64 (
+ IN CONST CHAR16 *String
+ )
+{
+ UINT64 Result;
+
+ //
+ // ASSERT String is less long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == L' ') || (*String == L'\t')) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == L'0') {
+ String++;
+ }
+
+ if (InternalCharToUpper (*String) == L'X') {
+ ASSERT (*(String - 1) == L'0');
+ if (*(String - 1) != L'0') {
+ return 0;
+ }
+ //
+ // Skip the 'X'
+ //
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalIsHexaDecimalDigitCharacter (*String)) {
+ //
+ // If the Hex Number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= RShiftU64 (((UINT64) ~0) - InternalHexCharToUintn (*String) , 4));
+
+ Result = LShiftU64 (Result, 4);
+ Result = Result + InternalHexCharToUintn (*String);
+ String++;
+ }
+
+ return Result;
+}
+
+/**
+ Check if a ASCII character is a decimal character.
+
+ This internal function checks if a Unicode character is a
+ decimal character. The valid decimal character is from
+ '0' to '9'.
+
+ @param Char The character to check against.
+
+ @retval TRUE If the Char is a decmial character.
+ @retval FALSE If the Char is not a decmial character.
+
+**/
+BOOLEAN
+EFIAPI
+InternalAsciiIsDecimalDigitCharacter (
+ IN CHAR8 Char
+ )
+{
+ return (BOOLEAN) (Char >= '0' && Char <= '9');
+}
+
+/**
+ Check if a ASCII character is a hexadecimal character.
+
+ This internal function checks if a ASCII character is a
+ decimal character. The valid hexadecimal character is
+ L'0' to L'9', L'a' to L'f', or L'A' to L'F'.
+
+
+ @param Char The character to check against.
+
+ @retval TRUE If the Char is a hexadecmial character.
+ @retval FALSE If the Char is not a hexadecmial character.
+
+**/
+BOOLEAN
+EFIAPI
+InternalAsciiIsHexaDecimalDigitCharacter (
+ IN CHAR8 Char
+ )
+{
+
+ return (BOOLEAN) (InternalAsciiIsDecimalDigitCharacter (Char) ||
+ (Char >= 'A' && Char <= 'F') ||
+ (Char >= 'a' && Char <= 'f'));
+}
+
+/**
+ Convert a Null-terminated Unicode string to a Null-terminated
+ ASCII string and returns the ASCII string.
+
+ This function converts the content of the Unicode string Source
+ to the ASCII string Destination by copying the lower 8 bits of
+ each Unicode character. It returns Destination.
+
+ The caller is responsible to make sure Destination points to a buffer with size
+ equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes.
+
+ If any Unicode characters in Source contain non-zero value in
+ the upper 8 bits, then ASSERT().
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains
+ more than PcdMaximumUnicodeStringLength Unicode characters, not including
+ the Null-terminator, then ASSERT().
+
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more
+ than PcdMaximumAsciiStringLength Unicode characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param Source A pointer to a Null-terminated Unicode string.
+ @param Destination A pointer to a Null-terminated ASCII string.
+
+ @return Destination.
+
+**/
+CHAR8 *
+EFIAPI
+UnicodeStrToAsciiStr (
+ IN CONST CHAR16 *Source,
+ OUT CHAR8 *Destination
+ )
+{
+ CHAR8 *ReturnValue;
+
+ ASSERT (Destination != NULL);
+
+ //
+ // ASSERT if Source is long than PcdMaximumUnicodeStringLength.
+ // Length tests are performed inside StrLen().
+ //
+ ASSERT (StrSize (Source) != 0);
+
+ //
+ // Source and Destination should not overlap
+ //
+ ASSERT ((UINTN) (Destination - (CHAR8 *) Source) >= StrSize (Source));
+ ASSERT ((UINTN) ((CHAR8 *) Source - Destination) > StrLen (Source));
+
+
+ ReturnValue = Destination;
+ while (*Source != '\0') {
+ //
+ // If any Unicode characters in Source contain
+ // non-zero value in the upper 8 bits, then ASSERT().
+ //
+ ASSERT (*Source < 0x100);
+ *(Destination++) = (CHAR8) *(Source++);
+ }
+
+ *Destination = '\0';
+
+ //
+ // ASSERT Original Destination is less long than PcdMaximumAsciiStringLength.
+ // Length tests are performed inside AsciiStrLen().
+ //
+ ASSERT (AsciiStrSize (ReturnValue) != 0);
+
+ return ReturnValue;
+}
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Copies one Null-terminated ASCII string to another Null-terminated ASCII
+ string and returns the new ASCII string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. If Source and Destination
+ overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination A pointer to a Null-terminated ASCII string.
+ @param Source A pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source
+ )
+{
+ CHAR8 *ReturnValue;
+
+ //
+ // Destination cannot be NULL
+ //
+ ASSERT (Destination != NULL);
+
+ //
+ // Destination and source cannot overlap
+ //
+ ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));
+ ASSERT ((UINTN)(Source - Destination) > AsciiStrLen (Source));
+
+ ReturnValue = Destination;
+ while (*Source != 0) {
+ *(Destination++) = *(Source++);
+ }
+ *Destination = 0;
+ return ReturnValue;
+}
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Copies up to a specified length one Null-terminated ASCII string to another
+ Null-terminated ASCII string and returns the new ASCII string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. At most, Length ASCII characters
+ are copied from Source to Destination. If Length is 0, then Destination is
+ returned unmodified. If Length is greater that the number of ASCII characters
+ in Source, then Destination is padded with Null ASCII characters. If Source
+ and Destination overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination A pointer to a Null-terminated ASCII string.
+ @param Source A pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters to copy.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrnCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ )
+{
+ CHAR8 *ReturnValue;
+
+ if (Length == 0) {
+ return Destination;
+ }
+
+ //
+ // Destination cannot be NULL
+ //
+ ASSERT (Destination != NULL);
+
+ //
+ // Destination and source cannot overlap
+ //
+ ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));
+ ASSERT ((UINTN)(Source - Destination) >= Length);
+
+ if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
+ ASSERT (Length <= PcdGet32 (PcdMaximumAsciiStringLength));
+ }
+
+ ReturnValue = Destination;
+
+ while (*Source != 0 && Length > 0) {
+ *(Destination++) = *(Source++);
+ Length--;
+ }
+
+ ZeroMem (Destination, Length * sizeof (*Destination));
+ return ReturnValue;
+}
+#endif
+
+/**
+ Returns the length of a Null-terminated ASCII string.
+
+ This function returns the number of ASCII characters in the Null-terminated
+ ASCII string specified by String.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @return The length of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrLen (
+ IN CONST CHAR8 *String
+ )
+{
+ UINTN Length;
+
+ ASSERT (String != NULL);
+
+ for (Length = 0; *String != '\0'; String++, Length++) {
+ //
+ // If PcdMaximumUnicodeStringLength is not zero,
+ // length should not more than PcdMaximumUnicodeStringLength
+ //
+ if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
+ ASSERT (Length < PcdGet32 (PcdMaximumAsciiStringLength));
+ }
+ }
+ return Length;
+}
+
+/**
+ Returns the size of a Null-terminated ASCII string in bytes, including the
+ Null terminator.
+
+ This function returns the size, in bytes, of the Null-terminated ASCII string
+ specified by String.
+
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @return The size of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrSize (
+ IN CONST CHAR8 *String
+ )
+{
+ return (AsciiStrLen (String) + 1) * sizeof (*String);
+}
+
+/**
+ Compares two Null-terminated ASCII strings, and returns the difference
+ between the first mismatched ASCII characters.
+
+ This function compares the Null-terminated ASCII string FirstString to the
+ Null-terminated ASCII string SecondString. If FirstString is identical to
+ SecondString, then 0 is returned. Otherwise, the value returned is the first
+ mismatched ASCII character in SecondString subtracted from the first
+ mismatched ASCII character in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more
+ than PcdMaximumAsciiStringLength ASCII characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString A pointer to a Null-terminated ASCII string.
+ @param SecondString A pointer to a Null-terminated ASCII string.
+
+ @retval ==0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+AsciiStrCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString
+ )
+{
+ //
+ // ASSERT both strings are less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (FirstString));
+ ASSERT (AsciiStrSize (SecondString));
+
+ while ((*FirstString != '\0') && (*FirstString == *SecondString)) {
+ FirstString++;
+ SecondString++;
+ }
+
+ return *FirstString - *SecondString;
+}
+
+/**
+ Converts a lowercase Ascii character to upper one.
+
+ If Chr is lowercase Ascii character, then converts it to upper one.
+
+ If Value >= 0xA0, then ASSERT().
+ If (Value & 0x0F) >= 0x0A, then ASSERT().
+
+ @param Chr one Ascii character
+
+ @return The uppercase value of Ascii character
+
+**/
+CHAR8
+EFIAPI
+InternalBaseLibAsciiToUpper (
+ IN CHAR8 Chr
+ )
+{
+ return (UINT8) ((Chr >= 'a' && Chr <= 'z') ? Chr - ('a' - 'A') : Chr);
+}
+
+/**
+ Convert a ASCII character to numerical value.
+
+ This internal function only deal with Unicode character
+ which maps to a valid hexadecimal ASII character, i.e.
+ '0' to '9', 'a' to 'f' or 'A' to 'F'. For other
+ ASCII character, the value returned does not make sense.
+
+ @param Char The character to convert.
+
+ @return The numerical value converted.
+
+**/
+UINTN
+EFIAPI
+InternalAsciiHexCharToUintn (
+ IN CHAR8 Char
+ )
+{
+ if (InternalIsDecimalDigitCharacter (Char)) {
+ return Char - '0';
+ }
+
+ return (UINTN) (10 + InternalBaseLibAsciiToUpper (Char) - 'A');
+}
+
+
+/**
+ Performs a case insensitive comparison of two Null-terminated ASCII strings,
+ and returns the difference between the first mismatched ASCII characters.
+
+ This function performs a case insensitive comparison of the Null-terminated
+ ASCII string FirstString to the Null-terminated ASCII string SecondString. If
+ FirstString is identical to SecondString, then 0 is returned. Otherwise, the
+ value returned is the first mismatched lower case ASCII character in
+ SecondString subtracted from the first mismatched lower case ASCII character
+ in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more
+ than PcdMaximumAsciiStringLength ASCII characters, not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString A pointer to a Null-terminated ASCII string.
+ @param SecondString A pointer to a Null-terminated ASCII string.
+
+ @retval ==0 FirstString is identical to SecondString using case insensitive
+ comparisons.
+ @retval !=0 FirstString is not identical to SecondString using case
+ insensitive comparisons.
+
+**/
+INTN
+EFIAPI
+AsciiStriCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString
+ )
+{
+ CHAR8 UpperFirstString;
+ CHAR8 UpperSecondString;
+
+ //
+ // ASSERT both strings are less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (FirstString));
+ ASSERT (AsciiStrSize (SecondString));
+
+ UpperFirstString = InternalBaseLibAsciiToUpper (*FirstString);
+ UpperSecondString = InternalBaseLibAsciiToUpper (*SecondString);
+ while ((*FirstString != '\0') && (UpperFirstString == UpperSecondString)) {
+ FirstString++;
+ SecondString++;
+ UpperFirstString = InternalBaseLibAsciiToUpper (*FirstString);
+ UpperSecondString = InternalBaseLibAsciiToUpper (*SecondString);
+ }
+
+ return UpperFirstString - UpperSecondString;
+}
+
+/**
+ Compares two Null-terminated ASCII strings with maximum lengths, and returns
+ the difference between the first mismatched ASCII characters.
+
+ This function compares the Null-terminated ASCII string FirstString to the
+ Null-terminated ASCII string SecondString. At most, Length ASCII characters
+ will be compared. If Length is 0, then 0 is returned. If FirstString is
+ identical to SecondString, then 0 is returned. Otherwise, the value returned
+ is the first mismatched ASCII character in SecondString subtracted from the
+ first mismatched ASCII character in FirstString.
+
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and SecondString contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+
+ @param FirstString A pointer to a Null-terminated ASCII string.
+ @param SecondString A pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters for compare.
+
+ @retval ==0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+AsciiStrnCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString,
+ IN UINTN Length
+ )
+{
+ if (Length == 0) {
+ return 0;
+ }
+
+ //
+ // ASSERT both strings are less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (FirstString));
+ ASSERT (AsciiStrSize (SecondString));
+
+ if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {
+ ASSERT (Length <= PcdGet32 (PcdMaximumAsciiStringLength));
+ }
+
+ while ((*FirstString != '\0') &&
+ (*FirstString == *SecondString) &&
+ (Length > 1)) {
+ FirstString++;
+ SecondString++;
+ Length--;
+ }
+ return *FirstString - *SecondString;
+}
+
+#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Concatenates one Null-terminated ASCII string to another Null-terminated
+ ASCII string, and returns the concatenated ASCII string.
+
+ This function concatenates two Null-terminated ASCII strings. The contents of
+ Null-terminated ASCII string Source are concatenated to the end of Null-
+ terminated ASCII string Destination. The Null-terminated concatenated ASCII
+ String is returned.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Destination contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and concatenating Destination and
+ Source results in a ASCII string with more than PcdMaximumAsciiStringLength
+ ASCII characters, then ASSERT().
+
+ @param Destination A pointer to a Null-terminated ASCII string.
+ @param Source A pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrCat (
+ IN OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source
+ )
+{
+ AsciiStrCpy (Destination + AsciiStrLen (Destination), Source);
+
+ //
+ // Size of the resulting string should never be zero.
+ // PcdMaximumUnicodeStringLength is tested inside StrLen().
+ //
+ ASSERT (AsciiStrSize (Destination) != 0);
+ return Destination;
+}
+
+/**
+ [ATTENTION] This function will be deprecated for security reason.
+
+ Concatenates up to a specified length one Null-terminated ASCII string to
+ the end of another Null-terminated ASCII string, and returns the
+ concatenated ASCII string.
+
+ This function concatenates two Null-terminated ASCII strings. The contents
+ of Null-terminated ASCII string Source are concatenated to the end of Null-
+ terminated ASCII string Destination, and Destination is returned. At most,
+ Length ASCII characters are concatenated from Source to the end of
+ Destination, and Destination is always Null-terminated. If Length is 0, then
+ Destination is returned unmodified. If Source and Destination overlap, then
+ the results are undefined.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Length is greater than
+ PcdMaximumAsciiStringLength, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Destination contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters, not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and
+ Source results in a ASCII string with more than PcdMaximumAsciiStringLength
+ ASCII characters, not including the Null-terminator, then ASSERT().
+
+ @param Destination A pointer to a Null-terminated ASCII string.
+ @param Source A pointer to a Null-terminated ASCII string.
+ @param Length The maximum number of ASCII characters to concatenate from
+ Source.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrnCat (
+ IN OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ )
+{
+ UINTN DestinationLen;
+
+ DestinationLen = AsciiStrLen (Destination);
+ AsciiStrnCpy (Destination + DestinationLen, Source, Length);
+ Destination[DestinationLen + Length] = '\0';
+
+ //
+ // Size of the resulting string should never be zero.
+ // PcdMaximumUnicodeStringLength is tested inside StrLen().
+ //
+ ASSERT (AsciiStrSize (Destination) != 0);
+ return Destination;
+}
+#endif
+
+/**
+ Returns the first occurrence of a Null-terminated ASCII sub-string
+ in a Null-terminated ASCII string.
+
+ This function scans the contents of the ASCII string specified by String
+ and returns the first occurrence of SearchString. If SearchString is not
+ found in String, then NULL is returned. If the length of SearchString is zero,
+ then String is returned.
+
+ If String is NULL, then ASSERT().
+ If SearchString is NULL, then ASSERT().
+
+ If PcdMaximumAsciiStringLength is not zero, and SearchString or
+ String contains more than PcdMaximumAsciiStringLength Unicode characters
+ not including the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+ @param SearchString A pointer to a Null-terminated ASCII string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @retval others If there is a match return the first occurrence of SearchingString.
+ If the length of SearchString is zero,return String.
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrStr (
+ IN CONST CHAR8 *String,
+ IN CONST CHAR8 *SearchString
+ )
+{
+ CONST CHAR8 *FirstMatch;
+ CONST CHAR8 *SearchStringTmp;
+
+ //
+ // ASSERT both strings are less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (String) != 0);
+ ASSERT (AsciiStrSize (SearchString) != 0);
+
+ if (*SearchString == '\0') {
+ return (CHAR8 *) String;
+ }
+
+ while (*String != '\0') {
+ SearchStringTmp = SearchString;
+ FirstMatch = String;
+
+ while ((*String == *SearchStringTmp)
+ && (*String != '\0')) {
+ String++;
+ SearchStringTmp++;
+ }
+
+ if (*SearchStringTmp == '\0') {
+ return (CHAR8 *) FirstMatch;
+ }
+
+ if (*String == '\0') {
+ return NULL;
+ }
+
+ String = FirstMatch + 1;
+ }
+
+ return NULL;
+}
+
+/**
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrDecimalToUintn (
+ IN CONST CHAR8 *String
+ )
+{
+ UINTN Result;
+
+ //
+ // ASSERT Strings is less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == ' ') || (*String == '\t' )) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == '0') {
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalAsciiIsDecimalDigitCharacter (*String)) {
+ //
+ // If the number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= ((((UINTN) ~0) - (*String - L'0')) / 10));
+
+ Result = Result * 10 + (*String - '0');
+ String++;
+ }
+
+ return Result;
+}
+
+
+/**
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+AsciiStrDecimalToUint64 (
+ IN CONST CHAR8 *String
+ )
+{
+ UINT64 Result;
+
+ //
+ // ASSERT Strings is less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == ' ') || (*String == '\t' )) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == '0') {
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalAsciiIsDecimalDigitCharacter (*String)) {
+ //
+ // If the number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= DivU64x32 (((UINT64) ~0) - (*String - L'0') , 10));
+
+ Result = MultU64x32 (Result, 10) + (*String - '0');
+ String++;
+ }
+
+ return Result;
+}
+
+/**
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINTN,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrHexToUintn (
+ IN CONST CHAR8 *String
+ )
+{
+ UINTN Result;
+
+ //
+ // ASSERT Strings is less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == ' ') || (*String == '\t' )) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == '0') {
+ String++;
+ }
+
+ if (InternalBaseLibAsciiToUpper (*String) == 'X') {
+ ASSERT (*(String - 1) == '0');
+ if (*(String - 1) != '0') {
+ return 0;
+ }
+ //
+ // Skip the 'X'
+ //
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalAsciiIsHexaDecimalDigitCharacter (*String)) {
+ //
+ // If the Hex Number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= ((((UINTN) ~0) - InternalHexCharToUintn (*String)) >> 4));
+
+ Result = (Result << 4) + InternalAsciiHexCharToUintn (*String);
+ String++;
+ }
+
+ return Result;
+}
+
+
+/**
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINT64,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String A pointer to a Null-terminated ASCII string.
+
+ @retval Value translated from String.
+
+**/
+UINT64
+EFIAPI
+AsciiStrHexToUint64 (
+ IN CONST CHAR8 *String
+ )
+{
+ UINT64 Result;
+
+ //
+ // ASSERT Strings is less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (String) != 0);
+
+ //
+ // Ignore the pad spaces (space or tab) and leading Zeros
+ //
+ //
+ // Ignore the pad spaces (space or tab)
+ //
+ while ((*String == ' ') || (*String == '\t' )) {
+ String++;
+ }
+
+ //
+ // Ignore leading Zeros after the spaces
+ //
+ while (*String == '0') {
+ String++;
+ }
+
+ if (InternalBaseLibAsciiToUpper (*String) == 'X') {
+ ASSERT (*(String - 1) == '0');
+ if (*(String - 1) != '0') {
+ return 0;
+ }
+ //
+ // Skip the 'X'
+ //
+ String++;
+ }
+
+ Result = 0;
+
+ while (InternalAsciiIsHexaDecimalDigitCharacter (*String)) {
+ //
+ // If the Hex Number represented by String overflows according
+ // to the range defined by UINTN, then ASSERT().
+ //
+ ASSERT (Result <= RShiftU64 (((UINT64) ~0) - InternalHexCharToUintn (*String) , 4));
+
+ Result = LShiftU64 (Result, 4);
+ Result = Result + InternalAsciiHexCharToUintn (*String);
+ String++;
+ }
+
+ return Result;
+}
+
+
+/**
+ Convert one Null-terminated ASCII string to a Null-terminated
+ Unicode string and returns the Unicode string.
+
+ This function converts the contents of the ASCII string Source to the Unicode
+ string Destination, and returns Destination. The function terminates the
+ Unicode string Destination by appending a Null-terminator character at the end.
+ The caller is responsible to make sure Destination points to a buffer with size
+ equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Source A pointer to a Null-terminated ASCII string.
+ @param Destination A pointer to a Null-terminated Unicode string.
+
+ @return Destination.
+
+**/
+CHAR16 *
+EFIAPI
+AsciiStrToUnicodeStr (
+ IN CONST CHAR8 *Source,
+ OUT CHAR16 *Destination
+ )
+{
+ CHAR16 *ReturnValue;
+
+ ASSERT (Destination != NULL);
+
+ //
+ // ASSERT Source is less long than PcdMaximumAsciiStringLength
+ //
+ ASSERT (AsciiStrSize (Source) != 0);
+
+ //
+ // Source and Destination should not overlap
+ //
+ ASSERT ((UINTN) ((CHAR8 *) Destination - Source) > AsciiStrLen (Source));
+ ASSERT ((UINTN) (Source - (CHAR8 *) Destination) >= (AsciiStrSize (Source) * sizeof (CHAR16)));
+
+
+ ReturnValue = Destination;
+ while (*Source != '\0') {
+ *(Destination++) = (CHAR16) *(Source++);
+ }
+ //
+ // End the Destination with a NULL.
+ //
+ *Destination = '\0';
+
+ //
+ // ASSERT Original Destination is less long than PcdMaximumUnicodeStringLength
+ //
+ ASSERT (StrSize (ReturnValue) != 0);
+
+ return ReturnValue;
+}
+
+/**
+ Converts an 8-bit value to an 8-bit BCD value.
+
+ Converts the 8-bit value specified by Value to BCD. The BCD value is
+ returned.
+
+ If Value >= 100, then ASSERT().
+
+ @param Value The 8-bit value to convert to BCD. Range 0..99.
+
+ @return The BCD value.
+
+**/
+UINT8
+EFIAPI
+DecimalToBcd8 (
+ IN UINT8 Value
+ )
+{
+ ASSERT (Value < 100);
+ return (UINT8) (((Value / 10) << 4) | (Value % 10));
+}
+
+/**
+ Converts an 8-bit BCD value to an 8-bit value.
+
+ Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
+ value is returned.
+
+ If Value >= 0xA0, then ASSERT().
+ If (Value & 0x0F) >= 0x0A, then ASSERT().
+
+ @param Value The 8-bit BCD value to convert to an 8-bit value.
+
+ @return The 8-bit value is returned.
+
+**/
+UINT8
+EFIAPI
+BcdToDecimal8 (
+ IN UINT8 Value
+ )
+{
+ ASSERT (Value < 0xa0);
+ ASSERT ((Value & 0xf) < 0xa);
+ return (UINT8) ((Value >> 4) * 10 + (Value & 0xf));
+}