[mirror_edk2.git] / BaseTools / Source / C / Common / SimpleFileParsing.c

/** @file\r
Generic but simple file parsing routines.\r
\r
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
--*/\r
\r
#include <stdio.h>\r
#include <string.h>\r
#include <stdlib.h>\r
#include <ctype.h>\r
\r
#include "CommonLib.h"\r
#include "EfiUtilityMsgs.h"\r
#include "SimpleFileParsing.h"\r
\r
#ifndef MAX_PATH\r
#define MAX_PATH  255\r
#endif\r
//\r
// just in case we get in an endless loop.\r
//\r
#define MAX_NEST_DEPTH  20\r
//\r
// number of wchars\r
//\r
#define MAX_STRING_IDENTIFIER_NAME  100\r
\r
#define T_CHAR_SPACE                ' '\r
#define T_CHAR_NULL                 0\r
#define T_CHAR_CR                   '\r'\r
#define T_CHAR_TAB                  '\t'\r
#define T_CHAR_LF                   '\n'\r
#define T_CHAR_SLASH                '/'\r
#define T_CHAR_BACKSLASH            '\\'\r
#define T_CHAR_DOUBLE_QUOTE         '"'\r
#define T_CHAR_LC_X                 'x'\r
#define T_CHAR_0                    '0'\r
#define T_CHAR_STAR                 '*'\r
\r
//\r
// We keep a linked list of these for the source files we process\r
//\r
typedef struct _SOURCE_FILE {\r
  FILE                *Fptr;\r
  CHAR8               *FileBuffer;\r
  CHAR8               *FileBufferPtr;\r
  UINTN               FileSize;\r
  CHAR8               FileName[MAX_PATH];\r
  UINTN               LineNum;\r
  BOOLEAN             EndOfFile;\r
  BOOLEAN             SkipToHash;\r
  struct _SOURCE_FILE *Previous;\r
  struct _SOURCE_FILE *Next;\r
  CHAR8               ControlCharacter;\r
} SOURCE_FILE;\r
\r
typedef struct {\r
  CHAR8   *FileBufferPtr;\r
} FILE_POSITION;\r
\r
//\r
// Keep all our module globals in this structure\r
//\r
STATIC struct {\r
  SOURCE_FILE SourceFile;\r
  BOOLEAN     VerboseFile;\r
  BOOLEAN     VerboseToken;\r
} mGlobals;\r
\r
STATIC\r
UINTN\r
t_strcmp (\r
  CHAR8  *Buffer,\r
  CHAR8  *Str\r
  );\r
\r
STATIC\r
UINTN\r
t_strncmp (\r
  CHAR8  *Str1,\r
  CHAR8  *Str2,\r
  INTN    Len\r
  );\r
\r
STATIC\r
UINTN\r
t_strlen (\r
  CHAR8  *Str\r
  );\r
\r
STATIC\r
VOID\r
RewindFile (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
BOOLEAN\r
IsWhiteSpace (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
UINTN\r
SkipWhiteSpace (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
BOOLEAN\r
EndOfFile (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
VOID\r
PreprocessFile (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
CHAR8   *\r
t_strcpy (\r
  CHAR8  *Dest,\r
  CHAR8  *Src\r
  );\r
\r
STATIC\r
STATUS\r
ProcessIncludeFile (\r
  SOURCE_FILE *SourceFile,\r
  SOURCE_FILE *ParentSourceFile\r
  );\r
\r
STATIC\r
STATUS\r
ProcessFile (\r
  SOURCE_FILE *SourceFile\r
  );\r
\r
STATIC\r
STATUS\r
GetFilePosition (\r
  FILE_POSITION *Fpos\r
  );\r
\r
STATIC\r
STATUS\r
SetFilePosition (\r
  FILE_POSITION *Fpos\r
  );\r
\r
STATUS\r
SFPInit (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
\r
Arguments:\r
  None.\r
\r
Returns:\r
  STATUS_SUCCESS always\r
\r
--*/\r
{\r
  memset ((VOID *) &mGlobals, 0, sizeof (mGlobals));\r
  return STATUS_SUCCESS;\r
}\r
\r
UINTN\r
SFPGetLineNumber (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
  Return the line number of the file we're parsing. Used\r
  for error reporting purposes.\r
\r
Arguments:\r
  None.\r
\r
Returns:\r
  The line number, or 0 if no file is being processed\r
\r
--*/\r
{\r
  return mGlobals.SourceFile.LineNum;\r
}\r
\r
CHAR8  *\r
SFPGetFileName (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
  Return the name of the file we're parsing. Used\r
  for error reporting purposes.\r
\r
Arguments:\r
  None.\r
\r
Returns:\r
  A pointer to the file name. Null if no file is being\r
  processed.\r
\r
--*/\r
{\r
  if (mGlobals.SourceFile.FileName[0]) {\r
    return mGlobals.SourceFile.FileName;\r
  }\r
\r
  return NULL;\r
}\r
\r
STATUS\r
SFPOpenFile (\r
  CHAR8      *FileName\r
  )\r
/*++\r
\r
Routine Description:\r
  Open a file for parsing.\r
\r
Arguments:\r
  FileName  - name of the file to parse\r
\r
Returns:\r
  \r
\r
--*/\r
{\r
  STATUS  Status;\r
  t_strcpy (mGlobals.SourceFile.FileName, FileName);\r
  Status = ProcessIncludeFile (&mGlobals.SourceFile, NULL);\r
  return Status;\r
}\r
\r
BOOLEAN\r
SFPIsToken (\r
  CHAR8  *Str\r
  )\r
/*++\r
\r
Routine Description:\r
  Check to see if the specified token is found at\r
  the current position in the input file.\r
\r
Arguments:\r
  Str - the token to look for\r
\r
Returns:\r
  TRUE - the token is next\r
  FALSE - the token is not next\r
\r
Notes:\r
  We do a simple string comparison on this function. It is\r
  the responsibility of the caller to ensure that the token\r
  is not a subset of some other token.\r
\r
  The file pointer is advanced past the token in the input file.\r
\r
--*/\r
{\r
  UINTN  Len;\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  if ((Len = t_strcmp (mGlobals.SourceFile.FileBufferPtr, Str)) > 0) {\r
    mGlobals.SourceFile.FileBufferPtr += Len;\r
    if (mGlobals.VerboseToken) {\r
      printf ("Token: '%s'\n", Str);\r
    }\r
\r
    return TRUE;\r
  }\r
\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPIsKeyword (\r
  CHAR8  *Str\r
  )\r
/*++\r
\r
Routine Description:\r
  Check to see if the specified keyword is found at\r
  the current position in the input file.\r
\r
Arguments:\r
  Str - keyword to look for\r
\r
Returns:\r
  TRUE - the keyword is next\r
  FALSE - the keyword is not next\r
\r
Notes:\r
  A keyword is defined as a "special" string that has a non-alphanumeric\r
  character following it.\r
\r
--*/\r
{\r
  UINTN  Len;\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  if ((Len = t_strcmp (mGlobals.SourceFile.FileBufferPtr, Str)) > 0) {\r
    if (isalnum ((int)mGlobals.SourceFile.FileBufferPtr[Len])) {\r
      return FALSE;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr += Len;\r
    if (mGlobals.VerboseToken) {\r
      printf ("Token: '%s'\n", Str);\r
    }\r
\r
    return TRUE;\r
  }\r
\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPGetNextToken (\r
  CHAR8  *Str,\r
  UINTN  Len\r
  )\r
/*++\r
\r
Routine Description:\r
  Get the next token from the input stream. \r
\r
Arguments:\r
  Str - pointer to a copy of the next token\r
  Len - size of buffer pointed to by Str\r
\r
Returns:\r
  TRUE  - next token successfully returned\r
  FALSE - otherwise\r
\r
Notes:\r
  Preceeding white space is ignored. \r
  The parser's buffer pointer is advanced past the end of the\r
  token.\r
\r
--*/\r
{\r
  UINTN  Index;\r
  CHAR8  TempChar;\r
\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
  //\r
  // Have to have enough string for at least one char and a null-terminator\r
  //\r
  if (Len < 2) {\r
    return FALSE;\r
  }\r
  //\r
  // Look at the first character. If it's an identifier, then treat it\r
  // as such\r
  //\r
  TempChar = mGlobals.SourceFile.FileBufferPtr[0];\r
  if (((TempChar >= 'a') && (TempChar <= 'z')) || ((TempChar >= 'A') && (TempChar <= 'Z')) || (TempChar == '_')) {\r
    Str[0] = TempChar;\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    Index = 1;\r
    while (!EndOfFile (&mGlobals.SourceFile) && (Index < Len)) {\r
      TempChar = mGlobals.SourceFile.FileBufferPtr[0];\r
      if (((TempChar >= 'a') && (TempChar <= 'z')) ||\r
          ((TempChar >= 'A') && (TempChar <= 'Z')) ||\r
          ((TempChar >= '0') && (TempChar <= '9')) ||\r
          (TempChar == '_')\r
          ) {\r
        Str[Index] = mGlobals.SourceFile.FileBufferPtr[0];\r
        mGlobals.SourceFile.FileBufferPtr++;\r
        Index++;\r
      } else {\r
        //\r
        // Invalid character for symbol name, so break out\r
        //\r
        break;\r
      }\r
    }\r
    //\r
    // Null terminate and return success\r
    //\r
    Str[Index] = 0;\r
    return TRUE;\r
  } else if ((TempChar == ')') || (TempChar == '(') || (TempChar == '*')) {\r
    Str[0] = mGlobals.SourceFile.FileBufferPtr[0];\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    Str[1] = 0;\r
    return TRUE;\r
  } else {\r
    //\r
    // Everything else is white-space (or EOF) separated\r
    //\r
    Index = 0;\r
    while (!EndOfFile (&mGlobals.SourceFile) && (Index < Len)) {\r
      if (IsWhiteSpace (&mGlobals.SourceFile)) {\r
        if (Index > 0) {\r
          Str[Index] = 0;\r
          return TRUE;\r
        }\r
\r
        return FALSE;\r
      } else {\r
        Str[Index] = mGlobals.SourceFile.FileBufferPtr[0];\r
        mGlobals.SourceFile.FileBufferPtr++;\r
        Index++;\r
      }\r
    }\r
    //\r
    // See if we just ran out of file contents, but did find a token\r
    //\r
    if ((Index > 0) && EndOfFile (&mGlobals.SourceFile)) {\r
      Str[Index] = 0;\r
      return TRUE;\r
    }\r
  }\r
\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPGetGuidToken (\r
  CHAR8  *Str,\r
  UINT32 Len\r
  )\r
/*++\r
\r
Routine Description:\r
  Parse a GUID from the input stream. Stop when you discover white space.\r
\r
Arguments:\r
  Str - pointer to a copy of the next token\r
  Len - size of buffer pointed to by Str\r
\r
Returns:\r
  TRUE  - GUID string returned successfully\r
  FALSE - otherwise\r
\r
--*/\r
{\r
  UINT32  Index;\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  Index = 0;\r
  while (!EndOfFile (&mGlobals.SourceFile) && (Index < Len)) {\r
    if (IsWhiteSpace (&mGlobals.SourceFile)) {\r
      if (Index > 0) {\r
        Str[Index] = 0;\r
        return TRUE;\r
      }\r
\r
      return FALSE;\r
    } else {\r
      Str[Index] = mGlobals.SourceFile.FileBufferPtr[0];\r
      mGlobals.SourceFile.FileBufferPtr++;\r
      Index++;\r
    }\r
  }\r
\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPSkipToToken (\r
  CHAR8  *Str\r
  )\r
{\r
  UINTN  Len;\r
  CHAR8         *SavePos;\r
  Len     = t_strlen (Str);\r
  SavePos = mGlobals.SourceFile.FileBufferPtr;\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  while (!EndOfFile (&mGlobals.SourceFile)) {\r
    if (t_strncmp (Str, mGlobals.SourceFile.FileBufferPtr, Len) == 0) {\r
      mGlobals.SourceFile.FileBufferPtr += Len;\r
      return TRUE;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    SkipWhiteSpace (&mGlobals.SourceFile);\r
  }\r
\r
  mGlobals.SourceFile.FileBufferPtr = SavePos;\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPGetNumber (\r
  UINTN *Value\r
  )\r
/*++\r
\r
Routine Description:\r
  Check the token at the current file position for a numeric value.\r
  May be either decimal or hex.\r
\r
Arguments:\r
  Value  - pointer where to store the value\r
\r
Returns:\r
  FALSE    - current token is not a number\r
  TRUE     - current token is a number\r
\r
--*/\r
{\r
  unsigned Val;\r
\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  if (isdigit ((int)mGlobals.SourceFile.FileBufferPtr[0])) {\r
    //\r
    // Check for hex value\r
    //\r
    if ((mGlobals.SourceFile.FileBufferPtr[0] == T_CHAR_0) && (mGlobals.SourceFile.FileBufferPtr[1] == T_CHAR_LC_X)) {\r
      if (!isxdigit ((int)mGlobals.SourceFile.FileBufferPtr[2])) {\r
        return FALSE;\r
      }\r
\r
      mGlobals.SourceFile.FileBufferPtr += 2;\r
      sscanf (mGlobals.SourceFile.FileBufferPtr, "%x", &Val);\r
      *Value = (UINT32) Val;\r
      while (isxdigit ((int)mGlobals.SourceFile.FileBufferPtr[0])) {\r
        mGlobals.SourceFile.FileBufferPtr++;\r
      }\r
\r
      return TRUE;\r
    } else {\r
      *Value = atoi (mGlobals.SourceFile.FileBufferPtr);\r
      while (isdigit ((int)mGlobals.SourceFile.FileBufferPtr[0])) {\r
        mGlobals.SourceFile.FileBufferPtr++;\r
      }\r
\r
      return TRUE;\r
    }\r
  } else {\r
    return FALSE;\r
  }\r
}\r
\r
STATUS\r
SFPCloseFile (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
  Close the file being parsed.\r
\r
Arguments:\r
  None.\r
\r
Returns:\r
  STATUS_SUCCESS - the file was closed \r
  STATUS_ERROR   - no file is currently open\r
\r
--*/\r
{\r
  if (mGlobals.SourceFile.FileBuffer != NULL) {\r
    free (mGlobals.SourceFile.FileBuffer);\r
    memset (&mGlobals.SourceFile, 0, sizeof (mGlobals.SourceFile));\r
    return STATUS_SUCCESS;\r
  }\r
\r
  return STATUS_ERROR;\r
}\r
\r
STATIC\r
STATUS\r
ProcessIncludeFile (\r
  SOURCE_FILE *SourceFile,\r
  SOURCE_FILE *ParentSourceFile\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Given a source file, open the file and parse it\r
  \r
Arguments:\r
\r
  SourceFile        - name of file to parse\r
  ParentSourceFile  - for error reporting purposes, the file that #included SourceFile.\r
\r
Returns:\r
\r
  Standard status.\r
  \r
--*/\r
{\r
  STATIC UINTN NestDepth = 0;\r
  CHAR8               FoundFileName[MAX_PATH];\r
  STATUS              Status;\r
\r
  Status = STATUS_SUCCESS;\r
  NestDepth++;\r
  //\r
  // Print the file being processed. Indent so you can tell the include nesting\r
  // depth.\r
  //\r
  if (mGlobals.VerboseFile) {\r
    fprintf (stdout, "%*cProcessing file '%s'\n", (int)NestDepth * 2, ' ', SourceFile->FileName);\r
    fprintf (stdout, "Parent source file = '%s'\n", ParentSourceFile->FileName);\r
  }\r
\r
  //\r
  // Make sure we didn't exceed our maximum nesting depth\r
  //\r
  if (NestDepth > MAX_NEST_DEPTH) {\r
    Error (NULL, 0, 3001, "Not Supported", "%s exceeeds max nesting depth (%u)", SourceFile->FileName, (unsigned) NestDepth);\r
    Status = STATUS_ERROR;\r
    goto Finish;\r
  }\r
  //\r
  // Try to open the file locally, and if that fails try along our include paths.\r
  //\r
  strcpy (FoundFileName, SourceFile->FileName);\r
  if ((SourceFile->Fptr = fopen (LongFilePath (FoundFileName), "rb")) == NULL) {\r
    return STATUS_ERROR;\r
  }\r
  //\r
  // Process the file found\r
  //\r
  ProcessFile (SourceFile);\r
Finish:\r
  //\r
  // Close open files and return status\r
  //\r
  if (SourceFile->Fptr != NULL) {\r
    fclose (SourceFile->Fptr);\r
    SourceFile->Fptr = NULL;\r
  }\r
\r
  return Status;\r
}\r
\r
STATIC\r
STATUS\r
ProcessFile (\r
  SOURCE_FILE *SourceFile\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Given a source file that's been opened, read the contents into an internal\r
  buffer and pre-process it to remove comments.\r
  \r
Arguments:\r
\r
  SourceFile        - structure containing info on the file to process\r
\r
Returns:\r
\r
  Standard status.\r
  \r
--*/\r
{\r
  //\r
  // Get the file size, and then read the entire thing into memory.\r
  // Allocate extra space for a terminator character.\r
  //\r
  fseek (SourceFile->Fptr, 0, SEEK_END);\r
  SourceFile->FileSize = ftell (SourceFile->Fptr);\r
  if (mGlobals.VerboseFile) {\r
    printf ("FileSize = %u (0x%X)\n", (unsigned) SourceFile->FileSize, (unsigned) SourceFile->FileSize);\r
  }\r
\r
  fseek (SourceFile->Fptr, 0, SEEK_SET);\r
  SourceFile->FileBuffer = (CHAR8  *) malloc (SourceFile->FileSize + sizeof (CHAR8 ));\r
  if (SourceFile->FileBuffer == NULL) {\r
    Error (NULL, 0, 4001, "Resource: memory cannot be allocated", NULL);\r
    return STATUS_ERROR;\r
  }\r
\r
  fread ((VOID *) SourceFile->FileBuffer, SourceFile->FileSize, 1, SourceFile->Fptr);\r
  SourceFile->FileBuffer[(SourceFile->FileSize / sizeof (CHAR8 ))] = T_CHAR_NULL;\r
  //\r
  // Pre-process the file to replace comments with spaces\r
  //\r
  PreprocessFile (SourceFile);\r
  SourceFile->LineNum = 1;\r
  return STATUS_SUCCESS;\r
}\r
\r
STATIC\r
VOID\r
PreprocessFile (\r
  SOURCE_FILE *SourceFile\r
  )\r
/*++\r
\r
Routine Description:\r
  Preprocess a file to replace all carriage returns with NULLs so\r
  we can print lines (as part of error messages) from the file to the screen.\r
  \r
Arguments:\r
  SourceFile - structure that we use to keep track of an input file.\r
\r
Returns:\r
  Nothing.\r
  \r
--*/\r
{\r
  BOOLEAN InComment;\r
  BOOLEAN SlashSlashComment;\r
  int     LineNum;\r
\r
  RewindFile (SourceFile);\r
  InComment         = FALSE;\r
  SlashSlashComment = FALSE;\r
  while (!EndOfFile (SourceFile)) {\r
    //\r
    // If a line-feed, then no longer in a comment if we're in a // comment\r
    //\r
    if (SourceFile->FileBufferPtr[0] == T_CHAR_LF) {\r
      SourceFile->FileBufferPtr++;\r
      SourceFile->LineNum++;\r
      if (InComment && SlashSlashComment) {\r
        InComment         = FALSE;\r
        SlashSlashComment = FALSE;\r
      }\r
    } else if (SourceFile->FileBufferPtr[0] == T_CHAR_CR) {\r
      //\r
      // Replace all carriage returns with a NULL so we can print stuff\r
      //\r
      SourceFile->FileBufferPtr[0] = 0;\r
      SourceFile->FileBufferPtr++;\r
      //\r
      // Check for */ comment end\r
      //\r
    } else if (InComment &&\r
             !SlashSlashComment &&\r
             (SourceFile->FileBufferPtr[0] == T_CHAR_STAR) &&\r
             (SourceFile->FileBufferPtr[1] == T_CHAR_SLASH)\r
            ) {\r
      SourceFile->FileBufferPtr[0] = T_CHAR_SPACE;\r
      SourceFile->FileBufferPtr++;\r
      SourceFile->FileBufferPtr[0] = T_CHAR_SPACE;\r
      SourceFile->FileBufferPtr++;\r
      InComment = FALSE;\r
    } else if (InComment) {\r
      SourceFile->FileBufferPtr[0] = T_CHAR_SPACE;\r
      SourceFile->FileBufferPtr++;\r
      //\r
      // Check for // comments\r
      //\r
    } else if ((SourceFile->FileBufferPtr[0] == T_CHAR_SLASH) && (SourceFile->FileBufferPtr[1] == T_CHAR_SLASH)) {\r
      InComment         = TRUE;\r
      SlashSlashComment = TRUE;\r
      //\r
      // Check for /* comment start\r
      //\r
    } else if ((SourceFile->FileBufferPtr[0] == T_CHAR_SLASH) && (SourceFile->FileBufferPtr[1] == T_CHAR_STAR)) {\r
      SourceFile->FileBufferPtr[0] = T_CHAR_SPACE;\r
      SourceFile->FileBufferPtr++;\r
      SourceFile->FileBufferPtr[0] = T_CHAR_SPACE;\r
      SourceFile->FileBufferPtr++;\r
      SlashSlashComment = FALSE;\r
      InComment         = TRUE;\r
    } else {\r
      SourceFile->FileBufferPtr++;\r
    }\r
  }\r
  //\r
  // Could check for end-of-file and still in a comment, but\r
  // should not be necessary. So just restore the file pointers.\r
  //\r
  RewindFile (SourceFile);\r
  //\r
  // Dump the reformatted file if verbose mode\r
  //\r
  if (mGlobals.VerboseFile) {\r
    LineNum = 1;\r
    printf ("%04d: ", LineNum);\r
    while (!EndOfFile (SourceFile)) {\r
      if (SourceFile->FileBufferPtr[0] == T_CHAR_LF) {\r
        printf ("'\n%04d: '", ++LineNum);\r
      } else {\r
        printf ("%c", SourceFile->FileBufferPtr[0]);\r
      }\r
\r
      SourceFile->FileBufferPtr++;\r
    }\r
\r
    printf ("'\n");\r
    printf ("FileSize = %u (0x%X)\n", (unsigned)SourceFile->FileSize, (unsigned)SourceFile->FileSize);\r
    RewindFile (SourceFile);\r
  }\r
}\r
\r
BOOLEAN\r
SFPGetQuotedString (\r
  CHAR8       *Str,\r
  INTN         Length\r
  )\r
/*++\r
\r
Routine Description:\r
  Retrieve a quoted-string from the input file. \r
  \r
Arguments:\r
  Str    - pointer to a copy of the quoted string parsed\r
  Length - size of buffer pointed to by Str\r
\r
Returns:\r
  TRUE    - next token in input stream was a quoted string, and\r
            the string value was returned in Str\r
  FALSE   - otherwise\r
  \r
--*/\r
{\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  if (mGlobals.SourceFile.FileBufferPtr[0] == T_CHAR_DOUBLE_QUOTE) {\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    while (Length > 0) {\r
      if (EndOfFile (&mGlobals.SourceFile)) {\r
        return FALSE;\r
      }\r
      //\r
      // Check for closing quote\r
      //\r
      if (mGlobals.SourceFile.FileBufferPtr[0] == T_CHAR_DOUBLE_QUOTE) {\r
        mGlobals.SourceFile.FileBufferPtr++;\r
        *Str = 0;\r
        return TRUE;\r
      }\r
\r
      *Str = mGlobals.SourceFile.FileBufferPtr[0];\r
      Str++;\r
      Length--;\r
      mGlobals.SourceFile.FileBufferPtr++;\r
    }\r
  }\r
  //\r
  // First character was not a quote, or the input string length was\r
  // insufficient to contain the quoted string, so return failure code.\r
  //\r
  return FALSE;\r
}\r
\r
BOOLEAN\r
SFPIsEOF (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
  Return TRUE of FALSE to indicate whether or not we've reached the end of the\r
  file we're parsing.\r
  \r
Arguments:\r
  NA\r
\r
Returns:\r
  TRUE    - EOF reached\r
  FALSE   - otherwise\r
  \r
--*/\r
{\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  return EndOfFile (&mGlobals.SourceFile);\r
}\r
\r
#if 0\r
STATIC\r
CHAR8  *\r
GetQuotedString (\r
  SOURCE_FILE *SourceFile,\r
  BOOLEAN     Optional\r
  )\r
{\r
  CHAR8         *String;\r
  CHAR8         *Start;\r
  CHAR8         *Ptr;\r
  UINTN         Len;\r
  BOOLEAN       PreviousBackslash;\r
\r
  if (SourceFile->FileBufferPtr[0] != T_CHAR_DOUBLE_QUOTE) {\r
    if (Optional == FALSE) {\r
      Error (SourceFile->FileName, SourceFile->LineNum, 0, "expected quoted string", "%S", SourceFile->FileBufferPtr);\r
    }\r
\r
    return NULL;\r
  }\r
\r
  Len = 0;\r
  SourceFile->FileBufferPtr++;\r
  Start             = Ptr = SourceFile->FileBufferPtr;\r
  PreviousBackslash = FALSE;\r
  while (!EndOfFile (SourceFile)) {\r
    if ((SourceFile->FileBufferPtr[0] == T_CHAR_DOUBLE_QUOTE) && (PreviousBackslash == FALSE)) {\r
      break;\r
    } else if (SourceFile->FileBufferPtr[0] == T_CHAR_CR) {\r
      Warning (SourceFile->FileName, SourceFile->LineNum, 0, "carriage return found in quoted string", "%S", Start);\r
      PreviousBackslash = FALSE;\r
    } else if (SourceFile->FileBufferPtr[0] == T_CHAR_BACKSLASH) {\r
      PreviousBackslash = TRUE;\r
    } else {\r
      PreviousBackslash = FALSE;\r
    }\r
\r
    SourceFile->FileBufferPtr++;\r
    Len++;\r
  }\r
\r
  if (SourceFile->FileBufferPtr[0] != T_CHAR_DOUBLE_QUOTE) {\r
    Warning (SourceFile->FileName, SourceFile->LineNum, 0, "missing closing quote on string", "%S", Start);\r
  } else {\r
    SourceFile->FileBufferPtr++;\r
  }\r
  //\r
  // Now allocate memory for the string and save it off\r
  //\r
  String = (CHAR8  *) malloc ((Len + 1) * sizeof (CHAR8 ));\r
  if (String == NULL) {\r
    Error (NULL, 0, 4001, "Resource: memory cannot be allocated", NULL);\r
    return NULL;\r
  }\r
  //\r
  // Copy the string from the file buffer to the local copy.\r
  // We do no reformatting of it whatsoever at this point.\r
  //\r
  Ptr = String;\r
  while (Len > 0) {\r
    *Ptr = *Start;\r
    Start++;\r
    Ptr++;\r
    Len--;\r
  }\r
\r
  *Ptr = 0;\r
  return String;\r
}\r
#endif\r
STATIC\r
BOOLEAN\r
EndOfFile (\r
  SOURCE_FILE *SourceFile\r
  )\r
{\r
  //\r
  // The file buffer pointer will typically get updated before the End-of-file flag in the\r
  // source file structure, so check it first.\r
  //\r
  if (SourceFile->FileBufferPtr >= SourceFile->FileBuffer + SourceFile->FileSize / sizeof (CHAR8 )) {\r
    SourceFile->EndOfFile = TRUE;\r
    return TRUE;\r
  }\r
\r
  if (SourceFile->EndOfFile) {\r
    return TRUE;\r
  }\r
\r
  return FALSE;\r
}\r
\r
#if 0\r
STATIC\r
VOID\r
ProcessTokenInclude (\r
  SOURCE_FILE *SourceFile\r
  )\r
{\r
  CHAR8          IncludeFileName[MAX_PATH];\r
  CHAR8          *To;\r
  UINTN  Len;\r
  BOOLEAN       ReportedError;\r
  SOURCE_FILE   IncludedSourceFile;\r
\r
  ReportedError = FALSE;\r
  if (SkipWhiteSpace (SourceFile) == 0) {\r
    Warning (SourceFile->FileName, SourceFile->LineNum, 0, "expected whitespace following #include keyword", NULL);\r
  }\r
  //\r
  // Should be quoted file name\r
  //\r
  if (SourceFile->FileBufferPtr[0] != T_CHAR_DOUBLE_QUOTE) {\r
    Error (SourceFile->FileName, SourceFile->LineNum, 0, "expected quoted include file name", NULL);\r
    goto FailDone;\r
  }\r
\r
  SourceFile->FileBufferPtr++;\r
  //\r
  // Copy the filename as ascii to our local string\r
  //\r
  To  = IncludeFileName;\r
  Len = 0;\r
  while (!EndOfFile (SourceFile)) {\r
    if ((SourceFile->FileBufferPtr[0] == T_CHAR_CR) || (SourceFile->FileBufferPtr[0] == T_CHAR_LF)) {\r
      Error (SourceFile->FileName, SourceFile->LineNum, 0, "end-of-line found in quoted include file name", NULL);\r
      goto FailDone;\r
    }\r
\r
    if (SourceFile->FileBufferPtr[0] == T_CHAR_DOUBLE_QUOTE) {\r
      SourceFile->FileBufferPtr++;\r
      break;\r
    }\r
    //\r
    // If too long, then report the error once and process until the closing quote\r
    //\r
    Len++;\r
    if (!ReportedError && (Len >= sizeof (IncludeFileName))) {\r
      Error (SourceFile->FileName, SourceFile->LineNum, 0, "length of include file name exceeds limit", NULL);\r
      ReportedError = TRUE;\r
    }\r
\r
    if (!ReportedError) {\r
      *To = (CHAR8 ) SourceFile->FileBufferPtr[0];\r
      To++;\r
    }\r
\r
    SourceFile->FileBufferPtr++;\r
  }\r
\r
  if (!ReportedError) {\r
    *To = 0;\r
    memset ((CHAR8 *) &IncludedSourceFile, 0, sizeof (SOURCE_FILE));\r
    strcpy (IncludedSourceFile.FileName, IncludeFileName);\r
    ProcessIncludeFile (&IncludedSourceFile, SourceFile);\r
  }\r
\r
  return ;\r
FailDone:\r
  //\r
  // Error recovery -- skip to next #\r
  //\r
  SourceFile->SkipToHash = TRUE;\r
}\r
#endif\r
STATIC\r
BOOLEAN\r
IsWhiteSpace (\r
  SOURCE_FILE *SourceFile\r
  )\r
{\r
  switch (*SourceFile->FileBufferPtr) {\r
  case T_CHAR_NULL:\r
  case T_CHAR_CR:\r
  case T_CHAR_SPACE:\r
  case T_CHAR_TAB:\r
  case T_CHAR_LF:\r
    return TRUE;\r
\r
  default:\r
    return FALSE;\r
  }\r
}\r
\r
UINTN\r
SkipWhiteSpace (\r
  SOURCE_FILE *SourceFile\r
  )\r
{\r
  UINTN  Count;\r
\r
  Count = 0;\r
  while (!EndOfFile (SourceFile)) {\r
    Count++;\r
    switch (*SourceFile->FileBufferPtr) {\r
    case T_CHAR_NULL:\r
    case T_CHAR_CR:\r
    case T_CHAR_SPACE:\r
    case T_CHAR_TAB:\r
      SourceFile->FileBufferPtr++;\r
      break;\r
\r
    case T_CHAR_LF:\r
      SourceFile->FileBufferPtr++;\r
      SourceFile->LineNum++;\r
      break;\r
\r
    default:\r
      return Count - 1;\r
    }\r
  }\r
  //\r
  // Some tokens require trailing whitespace. If we're at the end of the\r
  // file, then we count that as well.\r
  //\r
  if ((Count == 0) && (EndOfFile (SourceFile))) {\r
    Count++;\r
  }\r
\r
  return Count;\r
}\r
\r
STATIC\r
UINTN\r
t_strcmp (\r
  CHAR8  *Buffer,\r
  CHAR8  *Str\r
  )\r
/*++\r
\r
Routine Description:\r
  Compare two strings for equality. The string pointed to by 'Buffer' may or may not be null-terminated,\r
  so only compare up to the length of Str.\r
\r
Arguments:\r
  Buffer  - pointer to first (possibly not null-terminated) string\r
  Str     - pointer to null-terminated string to compare to Buffer\r
\r
Returns:\r
  Number of bytes matched if exact match\r
  0 if Buffer does not start with Str\r
\r
--*/\r
{\r
  UINTN  Len;\r
\r
  Len = 0;\r
  while (*Str && (*Str == *Buffer)) {\r
    Buffer++;\r
    Str++;\r
    Len++;\r
  }\r
\r
  if (*Str) {\r
    return 0;\r
  }\r
\r
  return Len;\r
}\r
\r
STATIC\r
UINTN\r
t_strlen (\r
  CHAR8  *Str\r
  )\r
{\r
  UINTN  Len;\r
  Len = 0;\r
  while (*Str) {\r
    Len++;\r
    Str++;\r
  }\r
\r
  return Len;\r
}\r
\r
STATIC\r
UINTN\r
t_strncmp (\r
  CHAR8  *Str1,\r
  CHAR8  *Str2,\r
  INTN    Len\r
  )\r
{\r
  while (Len > 0) {\r
    if (*Str1 != *Str2) {\r
      return Len;\r
    }\r
\r
    Len--;\r
    Str1++;\r
    Str2++;\r
  }\r
\r
  return 0;\r
}\r
\r
STATIC\r
CHAR8  *\r
t_strcpy (\r
  CHAR8  *Dest,\r
  CHAR8  *Src\r
  )\r
{\r
  CHAR8   *SaveDest;\r
  SaveDest = Dest;\r
  while (*Src) {\r
    *Dest = *Src;\r
    Dest++;\r
    Src++;\r
  }\r
\r
  *Dest = 0;\r
  return SaveDest;\r
}\r
\r
STATIC\r
VOID\r
RewindFile (\r
  SOURCE_FILE *SourceFile\r
  )\r
{\r
  SourceFile->LineNum       = 1;\r
  SourceFile->FileBufferPtr = SourceFile->FileBuffer;\r
  SourceFile->EndOfFile     = 0;\r
}\r
\r
STATIC\r
UINT32\r
GetHexChars (\r
  CHAR8       *Buffer,\r
  UINT32      BufferLen\r
  )\r
{\r
  UINT32  Len;\r
  Len = 0;\r
  while (!EndOfFile (&mGlobals.SourceFile) && (BufferLen > 0)) {\r
    if (isxdigit ((int)mGlobals.SourceFile.FileBufferPtr[0])) {\r
      *Buffer = mGlobals.SourceFile.FileBufferPtr[0];\r
      Buffer++;\r
      Len++;\r
      BufferLen--;\r
      mGlobals.SourceFile.FileBufferPtr++;\r
    } else {\r
      break;\r
    }\r
  }\r
  //\r
  // Null terminate if we can\r
  //\r
  if ((Len > 0) && (BufferLen > 0)) {\r
    *Buffer = 0;\r
  }\r
\r
  return Len;\r
}\r
\r
BOOLEAN\r
SFPGetGuid (\r
  INTN         GuidStyle,\r
  EFI_GUID    *Value\r
  )\r
/*++\r
\r
Routine Description:\r
  Parse a GUID from the input stream. Stop when you discover white space.\r
\r
Arguments:\r
  GuidStyle - Style of the following GUID token\r
  Value     - pointer to EFI_GUID struct for output\r
\r
Returns:\r
  TRUE  - GUID string parsed successfully\r
  FALSE - otherwise\r
\r
  GUID styles\r
    Style[0] 12345678-1234-5678-AAAA-BBBBCCCCDDDD\r
\r
--*/\r
{\r
  unsigned      Value32;\r
  UINT32        Index;\r
  FILE_POSITION FPos;\r
  CHAR8         TempString[20];\r
  CHAR8         TempString2[3];\r
  CHAR8         *From;\r
  CHAR8         *To;\r
  UINT32        Len;\r
  BOOLEAN       Status;\r
\r
  Status = FALSE;\r
  //\r
  // Skip white space, then start parsing\r
  //\r
  SkipWhiteSpace (&mGlobals.SourceFile);\r
  GetFilePosition (&FPos);\r
  if (EndOfFile (&mGlobals.SourceFile)) {\r
    return FALSE;\r
  }\r
\r
  if (GuidStyle == PARSE_GUID_STYLE_5_FIELDS) {\r
    //\r
    // Style[0] 12345678-1234-5678-AAAA-BBBBCCCCDDDD\r
    //\r
    Len = GetHexChars (TempString, sizeof (TempString));\r
    if ((Len == 0) || (Len > 8)) {\r
      goto Done;\r
    }\r
\r
    sscanf (TempString, "%x", &Value32);\r
    Value->Data1 = Value32;\r
    //\r
    // Next two UINT16 fields\r
    //\r
    if (mGlobals.SourceFile.FileBufferPtr[0] != '-') {\r
      goto Done;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    Len = GetHexChars (TempString, sizeof (TempString));\r
    if ((Len == 0) || (Len > 4)) {\r
      goto Done;\r
    }\r
\r
    sscanf (TempString, "%x", &Value32);\r
    Value->Data2 = (UINT16) Value32;\r
\r
    if (mGlobals.SourceFile.FileBufferPtr[0] != '-') {\r
      goto Done;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    Len = GetHexChars (TempString, sizeof (TempString));\r
    if ((Len == 0) || (Len > 4)) {\r
      goto Done;\r
    }\r
\r
    sscanf (TempString, "%x", &Value32);\r
    Value->Data3 = (UINT16) Value32;\r
    //\r
    // Parse the "AAAA" as two bytes\r
    //\r
    if (mGlobals.SourceFile.FileBufferPtr[0] != '-') {\r
      goto Done;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    Len = GetHexChars (TempString, sizeof (TempString));\r
    if ((Len == 0) || (Len > 4)) {\r
      goto Done;\r
    }\r
\r
    sscanf (TempString, "%x", &Value32);\r
    Value->Data4[0] = (UINT8) (Value32 >> 8);\r
    Value->Data4[1] = (UINT8) Value32;\r
    if (mGlobals.SourceFile.FileBufferPtr[0] != '-') {\r
      goto Done;\r
    }\r
\r
    mGlobals.SourceFile.FileBufferPtr++;\r
    //\r
    // Read the last 6 bytes of the GUID\r
    //\r
    //\r
    Len = GetHexChars (TempString, sizeof (TempString));\r
    if ((Len == 0) || (Len > 12)) {\r
      goto Done;\r
    }\r
    //\r
    // Insert leading 0's to make life easier\r
    //\r
    if (Len != 12) {\r
      From            = TempString + Len - 1;\r
      To              = TempString + 11;\r
      TempString[12]  = 0;\r
      while (From >= TempString) {\r
        *To = *From;\r
        To--;\r
        From--;\r
      }\r
\r
      while (To >= TempString) {\r
        *To = '0';\r
        To--;\r
      }\r
    }\r
    //\r
    // Now parse each byte\r
    //\r
    TempString2[2] = 0;\r
    for (Index = 0; Index < 6; Index++) {\r
      //\r
      // Copy the two characters from the input string to something\r
      // we can parse.\r
      //\r
      TempString2[0]  = TempString[Index * 2];\r
      TempString2[1]  = TempString[Index * 2 + 1];\r
      sscanf (TempString2, "%x", &Value32);\r
      Value->Data4[Index + 2] = (UINT8) Value32;\r
    }\r
\r
    Status = TRUE;\r
  } else {\r
    //\r
    // Unsupported GUID style\r
    //\r
    return FALSE;\r
  }\r
\r
Done:\r
  if (Status == FALSE) {\r
    SetFilePosition (&FPos);\r
  }\r
\r
  return Status;\r
}\r
\r
STATIC\r
STATUS\r
GetFilePosition (\r
  FILE_POSITION *Fpos\r
  )\r
{\r
  Fpos->FileBufferPtr = mGlobals.SourceFile.FileBufferPtr;\r
  return STATUS_SUCCESS;\r
}\r
\r
STATIC\r
STATUS\r
SetFilePosition (\r
  FILE_POSITION *Fpos\r
  )\r
{\r
  //\r
  // Should check range of pointer\r
  //\r
  mGlobals.SourceFile.FileBufferPtr = Fpos->FileBufferPtr;\r
  return STATUS_SUCCESS;\r
}\r