| 878ddf1f |
1 | /** @file\r |
| 2 | Unicode string primatives.\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: String.c\r |
| 14 | \r |
| 15 | **/\r |
| 16 | \r |
| 17 | /**\r |
| 18 | Copies one Null-terminated Unicode string to another Null-terminated Unicode\r |
| 19 | string and returns the new Unicode string.\r |
| 20 | \r |
| 21 | This function copies the contents of the Unicode string Source to the Unicode\r |
| 22 | string Destination, and returns Destination. If Source and Destination\r |
| 23 | overlap, then the results are undefined.\r |
| 24 | \r |
| 25 | If Destination is NULL, then ASSERT().\r |
| 26 | If Source is NULL, then ASSERT().\r |
| 27 | If Source and Destination overlap, then ASSERT().\r |
| 28 | If PcdMaximumUnicodeStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
29 | PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 30 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
31 | \r |
| 32 | @param Destination Pointer to a Null-terminated Unicode string.\r |
| 33 | @param Source Pointer to a Null-terminated Unicode string.\r |
| 34 | \r |
| 35 | @return Destiantion\r |
| 36 | \r |
| 37 | **/\r |
| 38 | CHAR16 *\r |
| 39 | EFIAPI\r |
| 40 | StrCpy (\r |
| 41 | OUT CHAR16 *Destination,\r |
| 42 | IN CONST CHAR16 *Source\r |
| 43 | )\r |
| 44 | {\r |
| 45 | CHAR16 *ReturnValue;\r |
| 46 | \r |
| 47 | //\r |
| 48 | // Destination cannot be NULL\r |
| 49 | //\r |
| 50 | ASSERT (Destination != NULL);\r |
| 51 | \r |
| 52 | //\r |
| 53 | // Destination and source cannot overlap\r |
| 54 | //\r |
| 55 | ASSERT ((UINTN)(Destination - Source) > StrLen (Source));\r |
| 56 | ASSERT ((UINTN)(Source - Destination) > StrLen (Source));\r |
| 57 | \r |
| 58 | ReturnValue = Destination;\r |
| 59 | while (*Source) {\r |
| 60 | *(Destination++) = *(Source++);\r |
| 61 | }\r |
| 62 | *Destination = 0;\r |
| 63 | return ReturnValue;\r |
| 64 | }\r |
| 65 | \r |
| 66 | /**\r |
| 67 | Copies one Null-terminated Unicode string with a maximum length to another\r |
| 68 | Null-terminated Unicode string with a maximum length and returns the new\r |
| 69 | Unicode string.\r |
| 70 | \r |
| 71 | This function copies the contents of the Unicode string Source to the Unicode\r |
| 72 | string Destination, and returns Destination. At most, Length Unicode\r |
| 73 | characters are copied from Source to Destination. If Length is 0, then\r |
| 74 | Destination is returned unmodified. If Length is greater that the number of\r |
| 75 | Unicode characters in Source, then Destination is padded with Null Unicode\r |
| 76 | characters. If Source and Destination overlap, then the results are\r |
| 77 | undefined.\r |
| 78 | \r |
| 79 | If Destination is NULL, then ASSERT().\r |
| 80 | If Source is NULL, then ASSERT().\r |
| 81 | If Source and Destination overlap, then ASSERT().\r |
| 82 | If PcdMaximumUnicodeStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
83 | PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 84 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
85 | \r |
| 86 | @param Destination Pointer to a Null-terminated Unicode string.\r |
| 87 | @param Source Pointer to a Null-terminated Unicode string.\r |
| 88 | @param Length Maximum number of Unicode characters to copy.\r |
| 89 | \r |
| 90 | @return Destination\r |
| 91 | \r |
| 92 | **/\r |
| 93 | CHAR16 *\r |
| 94 | EFIAPI\r |
| 95 | StrnCpy (\r |
| 96 | OUT CHAR16 *Destination,\r |
| 97 | IN CONST CHAR16 *Source,\r |
| 98 | IN UINTN Length\r |
| 99 | )\r |
| 100 | {\r |
| 101 | CHAR16 *ReturnValue;\r |
| 102 | \r |
| 103 | if (Length == 0) {\r |
| 104 | return Destination;\r |
| 105 | }\r |
| 106 | \r |
| 107 | //\r |
| 108 | // Destination cannot be NULL if Length is not zero\r |
| 109 | //\r |
| 110 | ASSERT (Destination != NULL);\r |
| 111 | \r |
| 112 | //\r |
| 113 | // Destination and source cannot overlap\r |
| 114 | // Q: Does Source have to be NULL-terminated?\r |
| 115 | //\r |
| 116 | ASSERT ((UINTN)(Destination - Source) > StrLen (Source));\r |
| 117 | ASSERT ((UINTN)(Source - Destination) >= Length);\r |
| 118 | \r |
| 119 | ReturnValue = Destination;\r |
| 120 | \r |
| 6cfb0c24 |
121 | while ((*Source != L'\0') && (Length > 0)) {\r |
| 878ddf1f |
122 | *(Destination++) = *(Source++);\r |
| 123 | Length--;\r |
| 124 | }\r |
| 125 | \r |
| 126 | ZeroMem (Destination, Length * sizeof (*Destination));\r |
| 127 | return ReturnValue;\r |
| 128 | }\r |
| 129 | \r |
| 130 | /**\r |
| 131 | Returns the length of a Null-terminated Unicode string.\r |
| 132 | \r |
| 133 | This function returns the number of Unicode characters in the Null-terminated\r |
| 134 | Unicode string specified by String.\r |
| 135 | \r |
| 136 | If String is NULL, then ASSERT().\r |
| 137 | If PcdMaximumUnicodeStringLength is not zero, and String contains more than\r |
| 30817eb4 |
138 | PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 139 | Null-terminator, then ASSERT().\r |
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140 | \r |
| 141 | @param String Pointer to a Null-terminated Unicode string.\r |
| 142 | \r |
| 143 | @return The length of String.\r |
| 144 | \r |
| 145 | **/\r |
| 146 | UINTN\r |
| 147 | EFIAPI\r |
| 148 | StrLen (\r |
| 149 | IN CONST CHAR16 *String\r |
| 150 | )\r |
| 151 | {\r |
| 152 | UINTN Length;\r |
| 153 | \r |
| 154 | ASSERT (String != NULL);\r |
| 155 | \r |
| 156 | for (Length = 0; *String != L'\0'; String++, Length++) {\r |
| 157 | //\r |
| 158 | // If PcdMaximumUnicodeStringLength is not zero,\r |
| 159 | // length should not more than PcdMaximumUnicodeStringLength\r |
| 160 | //\r |
| dc530c7b |
161 | if (PcdGet32 (PcdMaximumUnicodeStringLength) != 0) {\r |
| 162 | ASSERT (Length < PcdGet32 (PcdMaximumUnicodeStringLength));\r |
| 878ddf1f |
163 | }\r |
| 164 | }\r |
| 165 | return Length;\r |
| 166 | }\r |
| 167 | \r |
| 168 | /**\r |
| 169 | Returns the size of a Null-terminated Unicode string in bytes, including the\r |
| 170 | Null terminator.\r |
| 171 | \r |
| 172 | This function returns the size, in bytes, of the Null-terminated Unicode\r |
| 173 | string specified by String.\r |
| 174 | \r |
| 175 | If String is NULL, then ASSERT().\r |
| 176 | If PcdMaximumUnicodeStringLength is not zero, and String contains more than\r |
| 30817eb4 |
177 | PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 178 | Null-terminator, then ASSERT().\r |
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179 | \r |
| 180 | @param String Pointer to a Null-terminated Unicode string.\r |
| 181 | \r |
| 182 | @return The size of String.\r |
| 183 | \r |
| 184 | **/\r |
| 185 | UINTN\r |
| 186 | EFIAPI\r |
| 187 | StrSize (\r |
| 188 | IN CONST CHAR16 *String\r |
| 189 | )\r |
| 190 | {\r |
| 191 | return (StrLen (String) + 1) * sizeof (*String);\r |
| 192 | }\r |
| 193 | \r |
| 194 | /**\r |
| 195 | Compares two Null-terminated Unicode strings, and returns the difference\r |
| 196 | between the first mismatched Unicode characters.\r |
| 197 | \r |
| 198 | This function compares the Null-terminated Unicode string FirstString to the\r |
| 199 | Null-terminated Unicode string SecondString. If FirstString is identical to\r |
| 200 | SecondString, then 0 is returned. Otherwise, the value returned is the first\r |
| 201 | mismatched Unicode character in SecondString subtracted from the first\r |
| 202 | mismatched Unicode character in FirstString.\r |
| 203 | \r |
| 204 | If FirstString is NULL, then ASSERT().\r |
| 205 | If SecondString is NULL, then ASSERT().\r |
| 206 | If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more\r |
| 30817eb4 |
207 | than PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 208 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
209 | If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more\r |
| 30817eb4 |
210 | than PcdMaximumUnicodeStringLength Unicode characters not including the \r |
| 211 | Null-terminator, then ASSERT().\r |
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212 | \r |
| 213 | @param FirstString Pointer to a Null-terminated Unicode string.\r |
| 214 | @param SecondString Pointer to a Null-terminated Unicode string.\r |
| 215 | \r |
| 216 | @retval 0 FirstString is identical to SecondString.\r |
| 217 | @retval !=0 FirstString is not identical to SecondString.\r |
| 218 | \r |
| 219 | **/\r |
| 220 | INTN\r |
| 221 | EFIAPI\r |
| 222 | StrCmp (\r |
| 223 | IN CONST CHAR16 *FirstString,\r |
| 224 | IN CONST CHAR16 *SecondString\r |
| 225 | )\r |
| 226 | {\r |
| 227 | //\r |
| 228 | // ASSERT both strings are less long than PcdMaximumUnicodeStringLength\r |
| 229 | //\r |
| 230 | ASSERT (StrSize (FirstString) != 0);\r |
| 231 | ASSERT (StrSize (SecondString) != 0);\r |
| 232 | \r |
| 233 | while ((*FirstString != L'\0') && (*FirstString == *SecondString)) {\r |
| 234 | FirstString++;\r |
| 235 | SecondString++;\r |
| 236 | }\r |
| 237 | return *FirstString - *SecondString;\r |
| 238 | }\r |
| 239 | \r |
| 240 | /**\r |
| 241 | Compares two Null-terminated Unicode strings with maximum lengths, and\r |
| 242 | returns the difference between the first mismatched Unicode characters.\r |
| 243 | \r |
| 244 | This function compares the Null-terminated Unicode string FirstString to the\r |
| 245 | Null-terminated Unicode string SecondString. At most, Length Unicode\r |
| 246 | characters will be compared. If Length is 0, then 0 is returned. If\r |
| 247 | FirstString is identical to SecondString, then 0 is returned. Otherwise, the\r |
| 248 | value returned is the first mismatched Unicode character in SecondString\r |
| 249 | subtracted from the first mismatched Unicode character in FirstString.\r |
| 250 | \r |
| 251 | If FirstString is NULL, then ASSERT().\r |
| 252 | If SecondString is NULL, then ASSERT().\r |
| 253 | If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more\r |
| 30817eb4 |
254 | than PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 255 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
256 | If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more\r |
| 30817eb4 |
257 | than PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 258 | Null-terminator, then ASSERT().\r |
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259 | \r |
| 260 | @param FirstString Pointer to a Null-terminated Unicode string.\r |
| 261 | @param SecondString Pointer to a Null-terminated Unicode string.\r |
| 262 | @param Length Maximum number of Unicode characters to compare.\r |
| 263 | \r |
| 264 | @retval 0 FirstString is identical to SecondString.\r |
| 265 | @retval !=0 FirstString is not identical to SecondString.\r |
| 266 | \r |
| 267 | **/\r |
| 268 | INTN\r |
| 269 | EFIAPI\r |
| 270 | StrnCmp (\r |
| 271 | IN CONST CHAR16 *FirstString,\r |
| 272 | IN CONST CHAR16 *SecondString,\r |
| 273 | IN UINTN Length\r |
| 274 | )\r |
| 275 | {\r |
| 276 | if (Length == 0) {\r |
| 277 | return 0;\r |
| 278 | }\r |
| 279 | \r |
| 280 | //\r |
| 281 | // ASSERT both strings are less long than PcdMaximumUnicodeStringLength.\r |
| 282 | // Length tests are performed inside StrLen().\r |
| 283 | //\r |
| 284 | ASSERT (StrSize (FirstString) != 0);\r |
| 285 | ASSERT (StrSize (SecondString) != 0);\r |
| 286 | \r |
| 287 | while ((*FirstString != L'\0') &&\r |
| 267f7f10 |
288 | (*FirstString == *SecondString) &&\r |
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289 | (Length > 1)) {\r |
| 290 | FirstString++;\r |
| 291 | SecondString++;\r |
| 292 | Length--;\r |
| 293 | }\r |
| 294 | \r |
| 295 | return *FirstString - *SecondString;\r |
| 296 | }\r |
| 297 | \r |
| 298 | /**\r |
| 299 | Concatenates one Null-terminated Unicode string to another Null-terminated\r |
| 300 | Unicode string, and returns the concatenated Unicode string.\r |
| 301 | \r |
| 302 | This function concatenates two Null-terminated Unicode strings. The contents\r |
| 303 | of Null-terminated Unicode string Source are concatenated to the end of\r |
| 304 | Null-terminated Unicode string Destination. The Null-terminated concatenated\r |
| 305 | Unicode String is returned. If Source and Destination overlap, then the\r |
| 306 | results are undefined.\r |
| 307 | \r |
| 308 | If Destination is NULL, then ASSERT().\r |
| 309 | If Source is NULL, then ASSERT().\r |
| 310 | If Source and Destination overlap, then ASSERT().\r |
| 311 | If PcdMaximumUnicodeStringLength is not zero, and Destination contains more\r |
| 30817eb4 |
312 | than PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 313 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
314 | If PcdMaximumUnicodeStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
315 | PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 316 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
317 | If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination\r |
| 318 | and Source results in a Unicode string with more than\r |
| 30817eb4 |
319 | PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 320 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
321 | \r |
| 322 | @param Destination Pointer to a Null-terminated Unicode string.\r |
| 323 | @param Source Pointer to a Null-terminated Unicode string.\r |
| 324 | \r |
| 325 | @return Destination\r |
| 326 | \r |
| 327 | **/\r |
| 328 | CHAR16 *\r |
| 329 | EFIAPI\r |
| 330 | StrCat (\r |
| 331 | IN OUT CHAR16 *Destination,\r |
| 332 | IN CONST CHAR16 *Source\r |
| 333 | )\r |
| 334 | {\r |
| 335 | StrCpy (Destination + StrLen (Destination), Source);\r |
| 336 | \r |
| 337 | //\r |
| 338 | // Size of the resulting string should never be zero.\r |
| 339 | // PcdMaximumUnicodeStringLength is tested inside StrLen().\r |
| 340 | //\r |
| 341 | ASSERT (StrSize (Destination) != 0);\r |
| 342 | return Destination;\r |
| 343 | }\r |
| 344 | \r |
| 345 | /**\r |
| 346 | Concatenates one Null-terminated Unicode string with a maximum length to the\r |
| 347 | end of another Null-terminated Unicode string, and returns the concatenated\r |
| 348 | Unicode string.\r |
| 349 | \r |
| 350 | This function concatenates two Null-terminated Unicode strings. The contents\r |
| 351 | of Null-terminated Unicode string Source are concatenated to the end of\r |
| 352 | Null-terminated Unicode string Destination, and Destination is returned. At\r |
| 353 | most, Length Unicode characters are concatenated from Source to the end of\r |
| 354 | Destination, and Destination is always Null-terminated. If Length is 0, then\r |
| 355 | Destination is returned unmodified. If Source and Destination overlap, then\r |
| 356 | the results are undefined.\r |
| 357 | \r |
| 358 | If Destination is NULL, then ASSERT().\r |
| 359 | If Source is NULL, then ASSERT().\r |
| 360 | If Source and Destination overlap, then ASSERT().\r |
| 361 | If PcdMaximumUnicodeStringLength is not zero, and Destination contains more\r |
| 30817eb4 |
362 | than PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 363 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
364 | If PcdMaximumUnicodeStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
365 | PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 366 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
367 | If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination\r |
| 368 | and Source results in a Unicode string with more than\r |
| 30817eb4 |
369 | PcdMaximumUnicodeStringLength Unicode characters not including the\r |
| 370 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
371 | \r |
| 372 | @param Destination Pointer to a Null-terminated Unicode string.\r |
| 373 | @param Source Pointer to a Null-terminated Unicode string.\r |
| 374 | @param Length Maximum number of Unicode characters to concatenate from\r |
| 375 | Source.\r |
| 376 | \r |
| 377 | @return Destination\r |
| 378 | \r |
| 379 | **/\r |
| 380 | CHAR16 *\r |
| 381 | EFIAPI\r |
| 382 | StrnCat (\r |
| 383 | IN OUT CHAR16 *Destination,\r |
| 384 | IN CONST CHAR16 *Source,\r |
| 385 | IN UINTN Length\r |
| 386 | )\r |
| 387 | {\r |
| 388 | StrnCpy (Destination + StrLen (Destination), Source, Length);\r |
| 389 | \r |
| 390 | //\r |
| 391 | // Size of the resulting string should never be zero.\r |
| 392 | // PcdMaximumUnicodeStringLength is tested inside StrLen().\r |
| 393 | //\r |
| 394 | ASSERT (StrSize (Destination) != 0);\r |
| 395 | return Destination;\r |
| 396 | }\r |
| 397 | \r |
| 398 | /**\r |
| 399 | Copies one Null-terminated ASCII string to another Null-terminated ASCII\r |
| 400 | string and returns the new ASCII string.\r |
| 401 | \r |
| 402 | This function copies the contents of the ASCII string Source to the ASCII\r |
| 403 | string Destination, and returns Destination. If Source and Destination\r |
| 404 | overlap, then the results are undefined.\r |
| 405 | \r |
| 406 | If Destination is NULL, then ASSERT().\r |
| 407 | If Source is NULL, then ASSERT().\r |
| 408 | If Source and Destination overlap, then ASSERT().\r |
| 409 | If PcdMaximumAsciiStringLength is not zero and Source contains more than\r |
| 30817eb4 |
410 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 411 | then ASSERT().\r |
| 878ddf1f |
412 | \r |
| 413 | @param Destination Pointer to a Null-terminated ASCII string.\r |
| 414 | @param Source Pointer to a Null-terminated ASCII string.\r |
| 415 | \r |
| 416 | @return Destination\r |
| 417 | \r |
| 418 | **/\r |
| 419 | CHAR8 *\r |
| 420 | EFIAPI\r |
| 421 | AsciiStrCpy (\r |
| 422 | OUT CHAR8 *Destination,\r |
| 423 | IN CONST CHAR8 *Source\r |
| 424 | )\r |
| 425 | {\r |
| 426 | CHAR8 *ReturnValue;\r |
| 427 | \r |
| 428 | //\r |
| 429 | // Destination cannot be NULL\r |
| 430 | //\r |
| 431 | ASSERT (Destination != NULL);\r |
| 432 | \r |
| 433 | //\r |
| 434 | // Destination and source cannot overlap\r |
| 435 | //\r |
| 436 | ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));\r |
| 437 | ASSERT ((UINTN)(Source - Destination) > AsciiStrLen (Source));\r |
| 438 | \r |
| 439 | ReturnValue = Destination;\r |
| 440 | while (*Source) {\r |
| 441 | *(Destination++) = *(Source++);\r |
| 442 | }\r |
| 443 | *Destination = 0;\r |
| 444 | return ReturnValue;\r |
| 445 | }\r |
| 446 | \r |
| 447 | /**\r |
| 448 | Copies one Null-terminated ASCII string with a maximum length to another\r |
| 449 | Null-terminated ASCII string with a maximum length and returns the new ASCII\r |
| 450 | string.\r |
| 451 | \r |
| 452 | This function copies the contents of the ASCII string Source to the ASCII\r |
| 453 | string Destination, and returns Destination. At most, Length ASCII characters\r |
| 454 | are copied from Source to Destination. If Length is 0, then Destination is\r |
| 455 | returned unmodified. If Length is greater that the number of ASCII characters\r |
| 456 | in Source, then Destination is padded with Null ASCII characters. If Source\r |
| 457 | and Destination overlap, then the results are undefined.\r |
| 458 | \r |
| 459 | If Destination is NULL, then ASSERT().\r |
| 460 | If Source is NULL, then ASSERT().\r |
| 461 | If Source and Destination overlap, then ASSERT().\r |
| 462 | If PcdMaximumAsciiStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
463 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 464 | then ASSERT().\r |
| 878ddf1f |
465 | \r |
| 466 | @param Destination Pointer to a Null-terminated ASCII string.\r |
| 467 | @param Source Pointer to a Null-terminated ASCII string.\r |
| 468 | @param Length Maximum number of ASCII characters to copy.\r |
| 469 | \r |
| 470 | @return Destination\r |
| 471 | \r |
| 472 | **/\r |
| 473 | CHAR8 *\r |
| 474 | EFIAPI\r |
| 475 | AsciiStrnCpy (\r |
| 476 | OUT CHAR8 *Destination,\r |
| 477 | IN CONST CHAR8 *Source,\r |
| 478 | IN UINTN Length\r |
| 479 | )\r |
| 480 | {\r |
| 481 | CHAR8 *ReturnValue;\r |
| 482 | \r |
| 483 | if (Length == 0) {\r |
| 484 | return Destination;\r |
| 485 | }\r |
| 486 | \r |
| 487 | //\r |
| 488 | // Destination cannot be NULL\r |
| 489 | //\r |
| 490 | ASSERT (Destination != NULL);\r |
| 491 | \r |
| 492 | //\r |
| 493 | // Destination and source cannot overlap\r |
| 494 | //\r |
| 495 | ASSERT ((UINTN)(Destination - Source) > AsciiStrLen (Source));\r |
| 496 | ASSERT ((UINTN)(Source - Destination) >= Length);\r |
| 497 | \r |
| 498 | ReturnValue = Destination;\r |
| 499 | \r |
| 6cfb0c24 |
500 | while (*Source && Length > 0) {\r |
| 878ddf1f |
501 | *(Destination++) = *(Source++);\r |
| 502 | Length--;\r |
| 503 | }\r |
| 504 | \r |
| 505 | ZeroMem (Destination, Length * sizeof (*Destination));\r |
| 506 | return ReturnValue;\r |
| 507 | }\r |
| 508 | \r |
| 509 | /**\r |
| 510 | Returns the length of a Null-terminated ASCII string.\r |
| 511 | \r |
| 512 | This function returns the number of ASCII characters in the Null-terminated\r |
| 513 | ASCII string specified by String.\r |
| 514 | \r |
| 515 | If String is NULL, then ASSERT().\r |
| 516 | If PcdMaximumAsciiStringLength is not zero and String contains more than\r |
| 30817eb4 |
517 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 518 | then ASSERT().\r |
| 878ddf1f |
519 | \r |
| 520 | @param String Pointer to a Null-terminated ASCII string.\r |
| 521 | \r |
| 522 | @return The length of String.\r |
| 523 | \r |
| 524 | **/\r |
| 525 | UINTN\r |
| 526 | EFIAPI\r |
| 527 | AsciiStrLen (\r |
| 528 | IN CONST CHAR8 *String\r |
| 529 | )\r |
| 530 | {\r |
| 531 | UINTN Length;\r |
| 532 | \r |
| 533 | ASSERT (String != NULL);\r |
| 534 | \r |
| 535 | for (Length = 0; *String != '\0'; String++, Length++) {\r |
| 536 | //\r |
| 537 | // If PcdMaximumUnicodeStringLength is not zero,\r |
| 538 | // length should not more than PcdMaximumUnicodeStringLength\r |
| 539 | //\r |
| dc530c7b |
540 | if (PcdGet32 (PcdMaximumAsciiStringLength) != 0) {\r |
| 541 | ASSERT (Length < PcdGet32 (PcdMaximumAsciiStringLength));\r |
| 878ddf1f |
542 | }\r |
| 543 | }\r |
| 544 | return Length;\r |
| 545 | }\r |
| 546 | \r |
| 547 | /**\r |
| 548 | Returns the size of a Null-terminated ASCII string in bytes, including the\r |
| 549 | Null terminator.\r |
| 550 | \r |
| 551 | This function returns the size, in bytes, of the Null-terminated ASCII string\r |
| 552 | specified by String.\r |
| 553 | \r |
| 554 | If String is NULL, then ASSERT().\r |
| 555 | If PcdMaximumAsciiStringLength is not zero and String contains more than\r |
| 30817eb4 |
556 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 557 | then ASSERT().\r |
| 878ddf1f |
558 | \r |
| 559 | @param String Pointer to a Null-terminated ASCII string.\r |
| 560 | \r |
| 561 | @return The size of String.\r |
| 562 | \r |
| 563 | **/\r |
| 564 | UINTN\r |
| 565 | EFIAPI\r |
| 566 | AsciiStrSize (\r |
| 567 | IN CONST CHAR8 *String\r |
| 568 | )\r |
| 569 | {\r |
| 570 | return (AsciiStrLen (String) + 1) * sizeof (*String);\r |
| 571 | }\r |
| 572 | \r |
| 573 | /**\r |
| 574 | Compares two Null-terminated ASCII strings, and returns the difference\r |
| 575 | between the first mismatched ASCII characters.\r |
| 576 | \r |
| 577 | This function compares the Null-terminated ASCII string FirstString to the\r |
| 578 | Null-terminated ASCII string SecondString. If FirstString is identical to\r |
| 579 | SecondString, then 0 is returned. Otherwise, the value returned is the first\r |
| 580 | mismatched ASCII character in SecondString subtracted from the first\r |
| 581 | mismatched ASCII character in FirstString.\r |
| 582 | \r |
| 583 | If FirstString is NULL, then ASSERT().\r |
| 584 | If SecondString is NULL, then ASSERT().\r |
| 585 | If PcdMaximumAsciiStringLength is not zero and FirstString contains more than\r |
| 30817eb4 |
586 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 587 | then ASSERT().\r |
| 878ddf1f |
588 | If PcdMaximumAsciiStringLength is not zero and SecondString contains more\r |
| 30817eb4 |
589 | than PcdMaximumAsciiStringLength ASCII characters not including the\r |
| 590 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
591 | \r |
| 592 | @param FirstString Pointer to a Null-terminated ASCII string.\r |
| 593 | @param SecondString Pointer to a Null-terminated ASCII string.\r |
| 594 | \r |
| 595 | @retval 0 FirstString is identical to SecondString.\r |
| 596 | @retval !=0 FirstString is not identical to SecondString.\r |
| 597 | \r |
| 598 | **/\r |
| 599 | INTN\r |
| 600 | EFIAPI\r |
| 601 | AsciiStrCmp (\r |
| 602 | IN CONST CHAR8 *FirstString,\r |
| 603 | IN CONST CHAR8 *SecondString\r |
| 604 | )\r |
| 605 | {\r |
| 606 | //\r |
| 607 | // ASSERT both strings are less long than PcdMaximumAsciiStringLength\r |
| 608 | //\r |
| 609 | ASSERT (AsciiStrSize (FirstString));\r |
| 610 | ASSERT (AsciiStrSize (SecondString));\r |
| 611 | \r |
| 612 | while ((*FirstString != '\0') && (*FirstString == *SecondString)) {\r |
| 613 | FirstString++;\r |
| 614 | SecondString++;\r |
| 615 | }\r |
| 616 | \r |
| 617 | return *FirstString - *SecondString;\r |
| 618 | }\r |
| 619 | \r |
| 1ea5ca46 |
620 | /**\r |
| 621 | Converts a lowercase Ascii character to upper one\r |
| 622 | \r |
| 623 | If Chr is lowercase Ascii character, then converts it to upper one.\r |
| 624 | \r |
| 625 | If Value >= 0xA0, then ASSERT().\r |
| 626 | If (Value & 0x0F) >= 0x0A, then ASSERT().\r |
| 627 | \r |
| 628 | @param chr one Ascii character\r |
| 629 | \r |
| 630 | @return The uppercase value of Ascii character \r |
| 631 | \r |
| 632 | **/\r |
| 878ddf1f |
633 | STATIC\r |
| 634 | CHAR8\r |
| 878ddf1f |
635 | AsciiToUpper (\r |
| 636 | IN CHAR8 Chr\r |
| 637 | )\r |
| 638 | {\r |
| 639 | return (Chr >= 'a' && Chr <= 'z') ? Chr - ('a' - 'A') : Chr;\r |
| 640 | }\r |
| 641 | \r |
| 642 | /**\r |
| 643 | Performs a case insensitive comparison of two Null-terminated ASCII strings,\r |
| 644 | and returns the difference between the first mismatched ASCII characters.\r |
| 645 | \r |
| 646 | This function performs a case insensitive comparison of the Null-terminated\r |
| 647 | ASCII string FirstString to the Null-terminated ASCII string SecondString. If\r |
| 648 | FirstString is identical to SecondString, then 0 is returned. Otherwise, the\r |
| 649 | value returned is the first mismatched lower case ASCII character in\r |
| 650 | SecondString subtracted from the first mismatched lower case ASCII character\r |
| 651 | in FirstString.\r |
| 652 | \r |
| 653 | If FirstString is NULL, then ASSERT().\r |
| 654 | If SecondString is NULL, then ASSERT().\r |
| 655 | If PcdMaximumAsciiStringLength is not zero and FirstString contains more than\r |
| 30817eb4 |
656 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 657 | then ASSERT().\r |
| 878ddf1f |
658 | If PcdMaximumAsciiStringLength is not zero and SecondString contains more\r |
| 30817eb4 |
659 | than PcdMaximumAsciiStringLength ASCII characters not including the\r |
| 660 | Null-terminator, then ASSERT().\r |
| 878ddf1f |
661 | \r |
| 662 | @param FirstString Pointer to a Null-terminated ASCII string.\r |
| 663 | @param SecondString Pointer to a Null-terminated ASCII string.\r |
| 664 | \r |
| 665 | @retval 0 FirstString is identical to SecondString using case insensitive\r |
| 666 | comparisons.\r |
| 667 | @retval !=0 FirstString is not identical to SecondString using case\r |
| 668 | insensitive comparisons.\r |
| 669 | \r |
| 670 | **/\r |
| 671 | INTN\r |
| 672 | EFIAPI\r |
| 673 | AsciiStriCmp (\r |
| 674 | IN CONST CHAR8 *FirstString,\r |
| 675 | IN CONST CHAR8 *SecondString\r |
| 676 | )\r |
| 677 | {\r |
| 678 | //\r |
| 679 | // ASSERT both strings are less long than PcdMaximumAsciiStringLength\r |
| 680 | //\r |
| 681 | ASSERT (AsciiStrSize (FirstString));\r |
| 682 | ASSERT (AsciiStrSize (SecondString));\r |
| 683 | \r |
| 684 | while ((*FirstString != '\0') &&\r |
| 685 | (AsciiToUpper (*FirstString) == AsciiToUpper (*SecondString))) {\r |
| 686 | FirstString++;\r |
| 687 | SecondString++;\r |
| 688 | }\r |
| 689 | \r |
| 690 | return AsciiToUpper (*FirstString) - AsciiToUpper (*SecondString);\r |
| 691 | }\r |
| 692 | \r |
| 693 | /**\r |
| 694 | Compares two Null-terminated ASCII strings with maximum lengths, and returns\r |
| 695 | the difference between the first mismatched ASCII characters.\r |
| 696 | \r |
| 697 | This function compares the Null-terminated ASCII string FirstString to the\r |
| 698 | Null-terminated ASCII string SecondString. At most, Length ASCII characters\r |
| 699 | will be compared. If Length is 0, then 0 is returned. If FirstString is\r |
| 700 | identical to SecondString, then 0 is returned. Otherwise, the value returned\r |
| 701 | is the first mismatched ASCII character in SecondString subtracted from the\r |
| 702 | first mismatched ASCII character in FirstString.\r |
| 703 | \r |
| 704 | If FirstString is NULL, then ASSERT().\r |
| 705 | If SecondString is NULL, then ASSERT().\r |
| 706 | If PcdMaximumAsciiStringLength is not zero and FirstString contains more than\r |
| 30817eb4 |
707 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 708 | then ASSERT().\r |
| 709 | If PcdMaximumAsciiStringLength is not zero and SecondString contains more than\r |
| 710 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 711 | then ASSERT().\r |
| 878ddf1f |
712 | \r |
| 713 | @param FirstString Pointer to a Null-terminated ASCII string.\r |
| 714 | @param SecondString Pointer to a Null-terminated ASCII string.\r |
| 715 | \r |
| 716 | @retval 0 FirstString is identical to SecondString.\r |
| 717 | @retval !=0 FirstString is not identical to SecondString.\r |
| 718 | \r |
| 719 | **/\r |
| 720 | INTN\r |
| 721 | EFIAPI\r |
| 722 | AsciiStrnCmp (\r |
| 723 | IN CONST CHAR8 *FirstString,\r |
| 724 | IN CONST CHAR8 *SecondString,\r |
| 725 | IN UINTN Length\r |
| 726 | )\r |
| 727 | {\r |
| 03e772c3 |
728 | if (Length == 0) {\r |
| 729 | return 0;\r |
| 730 | }\r |
| 731 | \r |
| 878ddf1f |
732 | //\r |
| 733 | // ASSERT both strings are less long than PcdMaximumAsciiStringLength\r |
| 734 | //\r |
| 735 | ASSERT (AsciiStrSize (FirstString));\r |
| 736 | ASSERT (AsciiStrSize (SecondString));\r |
| 737 | \r |
| 738 | while ((*FirstString != '\0') &&\r |
| 267f7f10 |
739 | (*FirstString == *SecondString) &&\r |
| 878ddf1f |
740 | (Length > 1)) {\r |
| 741 | FirstString++;\r |
| 742 | SecondString++;\r |
| 743 | Length--;\r |
| 744 | }\r |
| 745 | return *FirstString - *SecondString;\r |
| 746 | }\r |
| 747 | \r |
| 748 | /**\r |
| 749 | Concatenates one Null-terminated ASCII string to another Null-terminated\r |
| 750 | ASCII string, and returns the concatenated ASCII string.\r |
| 751 | \r |
| 752 | This function concatenates two Null-terminated ASCII strings. The contents of\r |
| 753 | Null-terminated ASCII string Source are concatenated to the end of Null-\r |
| 754 | terminated ASCII string Destination. The Null-terminated concatenated ASCII\r |
| 755 | String is returned.\r |
| 756 | \r |
| 757 | If Destination is NULL, then ASSERT().\r |
| 758 | If Source is NULL, then ASSERT().\r |
| 759 | If PcdMaximumAsciiStringLength is not zero and Destination contains more than\r |
| 30817eb4 |
760 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 761 | then ASSERT().\r |
| 878ddf1f |
762 | If PcdMaximumAsciiStringLength is not zero and Source contains more than\r |
| 30817eb4 |
763 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 764 | then ASSERT().\r |
| 878ddf1f |
765 | If PcdMaximumAsciiStringLength is not zero and concatenating Destination and\r |
| 766 | Source results in a ASCII string with more than PcdMaximumAsciiStringLength\r |
| 767 | ASCII characters, then ASSERT().\r |
| 768 | \r |
| 769 | @param Destination Pointer to a Null-terminated ASCII string.\r |
| 770 | @param Source Pointer to a Null-terminated ASCII string.\r |
| 771 | \r |
| 772 | @return Destination\r |
| 773 | \r |
| 774 | **/\r |
| 775 | CHAR8 *\r |
| 776 | EFIAPI\r |
| 777 | AsciiStrCat (\r |
| 778 | IN OUT CHAR8 *Destination,\r |
| 779 | IN CONST CHAR8 *Source\r |
| 780 | )\r |
| 781 | {\r |
| 782 | AsciiStrCpy (Destination + AsciiStrLen (Destination), Source);\r |
| 783 | \r |
| 784 | //\r |
| 785 | // Size of the resulting string should never be zero.\r |
| 786 | // PcdMaximumUnicodeStringLength is tested inside StrLen().\r |
| 787 | //\r |
| 788 | ASSERT (AsciiStrSize (Destination) != 0);\r |
| 789 | return Destination;\r |
| 790 | }\r |
| 791 | \r |
| 792 | /**\r |
| 793 | Concatenates one Null-terminated ASCII string with a maximum length to the\r |
| 794 | end of another Null-terminated ASCII string, and returns the concatenated\r |
| 795 | ASCII string.\r |
| 796 | \r |
| 797 | This function concatenates two Null-terminated ASCII strings. The contents\r |
| 798 | of Null-terminated ASCII string Source are concatenated to the end of Null-\r |
| 799 | terminated ASCII string Destination, and Destination is returned. At most,\r |
| 800 | Length ASCII characters are concatenated from Source to the end of\r |
| 801 | Destination, and Destination is always Null-terminated. If Length is 0, then\r |
| 802 | Destination is returned unmodified. If Source and Destination overlap, then\r |
| 803 | the results are undefined.\r |
| 804 | \r |
| 805 | If Destination is NULL, then ASSERT().\r |
| 806 | If Source is NULL, then ASSERT().\r |
| 807 | If Source and Destination overlap, then ASSERT().\r |
| 30817eb4 |
808 | If PcdMaximumAsciiStringLength is not zero, and Destination contains more than\r |
| 809 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 810 | then ASSERT().\r |
| 878ddf1f |
811 | If PcdMaximumAsciiStringLength is not zero, and Source contains more than\r |
| 30817eb4 |
812 | PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,\r |
| 813 | then ASSERT().\r |
| 878ddf1f |
814 | If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and\r |
| 815 | Source results in a ASCII string with more than PcdMaximumAsciiStringLength\r |
| 30817eb4 |
816 | ASCII characters not including the Null-terminator, then ASSERT().\r |
| 878ddf1f |
817 | \r |
| 818 | @param Destination Pointer to a Null-terminated ASCII string.\r |
| 819 | @param Source Pointer to a Null-terminated ASCII string.\r |
| 820 | @param Length Maximum number of ASCII characters to concatenate from\r |
| 821 | Source.\r |
| 822 | \r |
| 823 | @return Destination\r |
| 824 | \r |
| 825 | **/\r |
| 826 | CHAR8 *\r |
| 827 | EFIAPI\r |
| 828 | AsciiStrnCat (\r |
| 829 | IN OUT CHAR8 *Destination,\r |
| 830 | IN CONST CHAR8 *Source,\r |
| 831 | IN UINTN Length\r |
| 832 | )\r |
| 833 | {\r |
| 834 | AsciiStrnCpy (Destination + AsciiStrLen (Destination), Source, Length);\r |
| 835 | \r |
| 836 | //\r |
| 837 | // Size of the resulting string should never be zero.\r |
| 838 | // PcdMaximumUnicodeStringLength is tested inside StrLen().\r |
| 839 | //\r |
| 840 | ASSERT (AsciiStrSize (Destination) != 0);\r |
| 841 | return Destination;\r |
| 842 | }\r |
| dee4740a |
843 | \r |
| 844 | /**\r |
| 845 | Converts an 8-bit value to an 8-bit BCD value.\r |
| 846 | \r |
| 847 | Converts the 8-bit value specified by Value to BCD. The BCD value is\r |
| 848 | returned.\r |
| 849 | \r |
| 850 | If Value >= 100, then ASSERT().\r |
| 851 | \r |
| 852 | @param Value The 8-bit value to convert to BCD. Range 0..99.\r |
| 853 | \r |
| 854 | @return The BCD value\r |
| 855 | \r |
| 856 | **/\r |
| 857 | UINT8\r |
| 858 | EFIAPI\r |
| 859 | DecimalToBcd8 (\r |
| 860 | IN UINT8 Value\r |
| 861 | )\r |
| 862 | {\r |
| 863 | ASSERT (Value < 100);\r |
| 864 | return ((Value / 10) << 4) | (Value % 10);\r |
| 865 | }\r |
| 866 | \r |
| 867 | /**\r |
| 868 | Converts an 8-bit BCD value to an 8-bit value.\r |
| 869 | \r |
| 870 | Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit\r |
| 871 | value is returned.\r |
| 872 | \r |
| 873 | If Value >= 0xA0, then ASSERT().\r |
| 874 | If (Value & 0x0F) >= 0x0A, then ASSERT().\r |
| 875 | \r |
| 876 | @param Value The 8-bit BCD value to convert to an 8-bit value.\r |
| 877 | \r |
| 878 | @return The 8-bit value is returned.\r |
| 879 | \r |
| 880 | **/\r |
| 881 | UINT8\r |
| 882 | EFIAPI\r |
| 883 | BcdToDecimal8 (\r |
| 884 | IN UINT8 Value\r |
| 885 | )\r |
| 886 | {\r |
| 887 | ASSERT (Value < 0xa0);\r |
| 888 | ASSERT ((Value & 0xf) < 0xa);\r |
| 889 | return (Value >> 4) * 10 + (Value & 0xf);\r |
| 890 | }\r |
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