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878ddf1f | 1 | /** @file\r |
2 | Print Library worker functions.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: PrintLibInternal.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "PrintLibInternal.h"\r | |
18 | \r | |
b0537818 | 19 | GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r |
878ddf1f | 20 | \r |
3f9f540d | 21 | \r |
22 | /**\r | |
23 | Internal function that places the character into the Buffer.\r | |
24 | \r | |
25 | Internal function that places ASCII or Unicode character into the Buffer.\r | |
26 | \r | |
27 | @param Buffer Buffer to place the Unicode or ASCII string.\r | |
4f7f1f5f | 28 | @param EndBuffer The end of the input Buffer. No characters will be\r |
29 | placed after that. \r | |
3f9f540d | 30 | @param Length Count of character to be placed into Buffer.\r |
31 | @param Character Character to be placed into Buffer.\r | |
32 | @param Increment Character increment in Buffer.\r | |
33 | \r | |
34 | @return Number of characters printed.\r | |
35 | \r | |
36 | **/\r | |
878ddf1f | 37 | CHAR8 *\r |
38 | BasePrintLibFillBuffer (\r | |
39 | CHAR8 *Buffer,\r | |
4f7f1f5f | 40 | CHAR8 *EndBuffer,\r |
878ddf1f | 41 | INTN Length,\r |
42 | UINTN Character,\r | |
43 | INTN Increment\r | |
44 | )\r | |
45 | {\r | |
46 | INTN Index;\r | |
47 | \r | |
4f7f1f5f | 48 | for (Index = 0; Index < Length && Buffer < EndBuffer; Index++) {\r |
878ddf1f | 49 | *Buffer = (CHAR8) Character;\r |
50 | *(Buffer + 1) = (CHAR8) (Character >> 8);\r | |
51 | Buffer += Increment;\r | |
52 | }\r | |
53 | return Buffer;\r | |
54 | }\r | |
55 | \r | |
56 | /**\r | |
3f9f540d | 57 | Internal function that convert a decimal number to a string in Buffer.\r |
878ddf1f | 58 | \r |
3f9f540d | 59 | Print worker function that convert a decimal number to a string in Buffer.\r |
60 | \r | |
61 | @param Buffer Location to place the Unicode or ASCII string of Value.\r | |
62 | @param Value Value to convert to a Decimal or Hexidecimal string in Buffer.\r | |
63 | @param Radix Radix of the value\r | |
878ddf1f | 64 | \r |
65 | @return Number of characters printed.\r | |
66 | \r | |
67 | **/\r | |
68 | UINTN\r | |
69 | EFIAPI\r | |
70 | BasePrintLibValueToString (\r | |
71 | IN OUT CHAR8 *Buffer,\r | |
72 | IN INT64 Value,\r | |
73 | IN UINTN Radix\r | |
74 | )\r | |
75 | {\r | |
76 | UINTN Digits;\r | |
77 | UINT32 Remainder;\r | |
78 | \r | |
79 | //\r | |
80 | // Loop to convert one digit at a time in reverse order\r | |
81 | //\r | |
82 | *(Buffer++) = 0;\r | |
83 | Digits = 0;\r | |
84 | do {\r | |
85 | Value = (INT64)DivU64x32Remainder ((UINT64)Value, (UINT32)Radix, &Remainder);\r | |
86 | *(Buffer++) = mHexStr[Remainder];\r | |
87 | Digits++;\r | |
88 | } while (Value != 0);\r | |
89 | return Digits;\r | |
90 | }\r | |
91 | \r | |
3f9f540d | 92 | /**\r |
93 | Internal function that converts a decimal value to a Null-terminated string.\r | |
94 | \r | |
95 | Converts the decimal number specified by Value to a Null-terminated \r | |
96 | string specified by Buffer containing at most Width characters.\r | |
97 | If Width is 0 then a width of MAXIMUM_VALUE_CHARACTERS is assumed.\r | |
add13dc2 | 98 | The number of characters in Buffer is returned not including the Null-terminator.\r |
3f9f540d | 99 | If the conversion contains more than Width characters, then only the first\r |
100 | Width characters are returned, and the total number of characters \r | |
101 | required to perform the conversion is returned.\r | |
102 | Additional conversion parameters are specified in Flags. \r | |
103 | The Flags bit LEFT_JUSTIFY is always ignored.\r | |
104 | All conversions are left justified in Buffer.\r | |
105 | If Width is 0, PREFIX_ZERO is ignored in Flags.\r | |
106 | If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas\r | |
107 | are inserted every 3rd digit starting from the right.\r | |
108 | If Value is < 0, then the fist character in Buffer is a '-'.\r | |
109 | If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, \r | |
110 | then Buffer is padded with '0' characters so the combination of the optional '-' \r | |
111 | sign character, '0' characters, digit characters for Value, and the Null-terminator\r | |
112 | add up to Width characters.\r | |
113 | \r | |
114 | If Buffer is NULL, then ASSERT().\r | |
115 | If unsupported bits are set in Flags, then ASSERT().\r | |
116 | If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()\r | |
117 | \r | |
118 | @param Buffer Pointer to the output buffer for the produced Null-terminated\r | |
119 | string.\r | |
120 | @param Flags The bitmask of flags that specify left justification, zero pad,\r | |
121 | and commas.\r | |
122 | @param Value The 64-bit signed value to convert to a string.\r | |
4f7f1f5f | 123 | @param Width The maximum number of characters to place in Buffer, not including\r |
124 | the Null-terminator.\r | |
3f9f540d | 125 | @param Increment Character increment in Buffer.\r |
126 | \r | |
add13dc2 | 127 | @return The number of characters in Buffer not including the Null-terminator.\r |
3f9f540d | 128 | \r |
129 | **/\r | |
878ddf1f | 130 | UINTN\r |
131 | BasePrintLibConvertValueToString (\r | |
132 | IN OUT CHAR8 *Buffer,\r | |
133 | IN UINTN Flags,\r | |
134 | IN INT64 Value,\r | |
135 | IN UINTN Width,\r | |
136 | IN UINTN Increment\r | |
137 | )\r | |
138 | {\r | |
139 | CHAR8 *OriginalBuffer;\r | |
4f7f1f5f | 140 | CHAR8 *EndBuffer;\r |
878ddf1f | 141 | CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS];\r |
142 | UINTN Count;\r | |
143 | UINTN Digits;\r | |
144 | UINTN Index;\r | |
145 | \r | |
8960cdeb | 146 | ASSERT (Buffer != NULL);\r |
147 | ASSERT (Width < MAXIMUM_VALUE_CHARACTERS);\r | |
148 | //\r | |
149 | // Make sure Flags can only contain supported bits.\r | |
150 | //\r | |
151 | ASSERT ((Flags & ~(LEFT_JUSTIFY | COMMA_TYPE | PREFIX_ZERO)) == 0);\r | |
152 | \r | |
878ddf1f | 153 | OriginalBuffer = Buffer;\r |
154 | \r | |
155 | if (Width == 0 || (Flags & COMMA_TYPE) != 0) {\r | |
156 | Flags &= (~PREFIX_ZERO);\r | |
157 | }\r | |
158 | \r | |
8960cdeb | 159 | if (Width == 0) {\r |
878ddf1f | 160 | Width = MAXIMUM_VALUE_CHARACTERS - 1;\r |
161 | }\r | |
4f7f1f5f | 162 | //\r |
163 | // Set the tag for the end of the input Buffer.\r | |
164 | //\r | |
165 | EndBuffer = Buffer + Width * Increment;\r | |
878ddf1f | 166 | \r |
167 | if (Value < 0) {\r | |
168 | Value = -Value;\r | |
4f7f1f5f | 169 | Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, '-', Increment);\r |
ab1096fd | 170 | Width--;\r |
878ddf1f | 171 | }\r |
172 | \r | |
173 | Count = BasePrintLibValueToString (ValueBuffer, Value, 10);\r | |
174 | \r | |
175 | if ((Flags & PREFIX_ZERO) != 0) {\r | |
4f7f1f5f | 176 | Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Count, '0', Increment);\r |
878ddf1f | 177 | }\r |
178 | \r | |
ab1096fd | 179 | Digits = Count % 3;\r |
180 | if (Digits != 0) {\r | |
181 | Digits = 3 - Digits;\r | |
182 | }\r | |
878ddf1f | 183 | for (Index = 0; Index < Count; Index++) {\r |
4f7f1f5f | 184 | Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ValueBuffer[Count - Index], Increment);\r |
878ddf1f | 185 | if ((Flags & COMMA_TYPE) != 0) {\r |
186 | Digits++;\r | |
187 | if (Digits == 3) {\r | |
188 | Digits = 0;\r | |
189 | if ((Index + 1) < Count) {\r | |
4f7f1f5f | 190 | Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ',', Increment);\r |
878ddf1f | 191 | }\r |
192 | }\r | |
193 | }\r | |
194 | }\r | |
195 | \r | |
d08b357f | 196 | BasePrintLibFillBuffer (Buffer, EndBuffer + Increment, 1, 0, Increment);\r |
878ddf1f | 197 | \r |
198 | return ((Buffer - OriginalBuffer) / Increment);\r | |
199 | }\r |