Tue, 13 Sep 2022 20:11:26 +0200
disallow NULL for cx_str() and cx_mutstr()
universe@576 | 1 | /* |
universe@576 | 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
universe@576 | 3 | * |
universe@576 | 4 | * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. |
universe@576 | 5 | * |
universe@576 | 6 | * Redistribution and use in source and binary forms, with or without |
universe@576 | 7 | * modification, are permitted provided that the following conditions are met: |
universe@576 | 8 | * |
universe@576 | 9 | * 1. Redistributions of source code must retain the above copyright |
universe@576 | 10 | * notice, this list of conditions and the following disclaimer. |
universe@576 | 11 | * |
universe@576 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
universe@576 | 13 | * notice, this list of conditions and the following disclaimer in the |
universe@576 | 14 | * documentation and/or other materials provided with the distribution. |
universe@576 | 15 | * |
universe@576 | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
universe@576 | 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
universe@576 | 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
universe@576 | 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
universe@576 | 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
universe@576 | 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
universe@576 | 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
universe@576 | 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
universe@576 | 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
universe@576 | 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
universe@576 | 26 | * POSSIBILITY OF SUCH DAMAGE. |
universe@576 | 27 | */ |
universe@576 | 28 | /** |
universe@576 | 29 | * \file string.h |
universe@576 | 30 | * \brief Strings that know their length. |
universe@576 | 31 | * \author Mike Becker |
universe@576 | 32 | * \author Olaf Wintermann |
universe@576 | 33 | * \version 3.0 |
universe@576 | 34 | * \copyright 2-Clause BSD License |
universe@576 | 35 | */ |
universe@576 | 36 | |
universe@576 | 37 | #ifndef UCX_STRING_H |
universe@576 | 38 | #define UCX_STRING_H |
universe@576 | 39 | |
universe@576 | 40 | #include "common.h" |
universe@576 | 41 | #include "allocator.h" |
universe@576 | 42 | |
universe@576 | 43 | /** |
universe@576 | 44 | * The UCX string structure. |
universe@576 | 45 | */ |
universe@577 | 46 | struct cx_mutstr_s { |
universe@576 | 47 | /** |
universe@576 | 48 | * A pointer to the string. |
universe@576 | 49 | * \note The string is not necessarily \c NULL terminated. |
universe@576 | 50 | * Always use the length. |
universe@576 | 51 | */ |
universe@576 | 52 | char *ptr; |
universe@576 | 53 | /** The length of the string */ |
universe@576 | 54 | size_t length; |
universe@577 | 55 | }; |
universe@576 | 56 | |
universe@576 | 57 | /** |
universe@576 | 58 | * A mutable string. |
universe@576 | 59 | */ |
universe@576 | 60 | typedef struct cx_mutstr_s cxmutstr; |
universe@576 | 61 | |
universe@576 | 62 | /** |
universe@576 | 63 | * The UCX string structure for immutable (constant) strings. |
universe@576 | 64 | */ |
universe@577 | 65 | struct cx_string_s { |
universe@576 | 66 | /** |
universe@576 | 67 | * A pointer to the immutable string. |
universe@576 | 68 | * \note The string is not necessarily \c NULL terminated. |
universe@576 | 69 | * Always use the length. |
universe@576 | 70 | */ |
universe@576 | 71 | char const *ptr; |
universe@576 | 72 | /** The length of the string */ |
universe@576 | 73 | size_t length; |
universe@577 | 74 | }; |
universe@576 | 75 | |
universe@576 | 76 | /** |
universe@576 | 77 | * An immutable string. |
universe@576 | 78 | */ |
universe@576 | 79 | typedef struct cx_string_s cxstring; |
universe@576 | 80 | |
universe@583 | 81 | /** |
universe@583 | 82 | * A literal initializer for an UCX string structure. |
universe@583 | 83 | * |
universe@583 | 84 | * The argument MUST be a string (const char*) \em literal. |
universe@583 | 85 | * |
universe@583 | 86 | * @param literal the string literal |
universe@583 | 87 | */ |
universe@583 | 88 | #define CX_STR(literal) {literal, sizeof(literal) - 1} |
universe@583 | 89 | |
universe@576 | 90 | #ifdef __cplusplus |
universe@576 | 91 | extern "C" { |
universe@576 | 92 | #endif |
universe@576 | 93 | |
universe@576 | 94 | |
universe@576 | 95 | /** |
universe@576 | 96 | * Wraps a mutable string that must be zero-terminated. |
universe@576 | 97 | * |
universe@576 | 98 | * The length is implicitly inferred by using a call to \c strlen(). |
universe@576 | 99 | * |
universe@576 | 100 | * \note the wrapped string will share the specified pointer to the string. |
universe@576 | 101 | * If you do want a copy, use cx_strdup() on the return value of this function. |
universe@576 | 102 | * |
universe@576 | 103 | * If you need to wrap a constant string, use cx_str(). |
universe@576 | 104 | * |
universe@584 | 105 | * @param cstring the string to wrap, must be zero-terminated |
universe@576 | 106 | * @return the wrapped string |
universe@576 | 107 | * |
universe@576 | 108 | * @see cx_mutstrn() |
universe@576 | 109 | */ |
universe@584 | 110 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 111 | cxmutstr cx_mutstr(char *cstring); |
universe@576 | 112 | |
universe@576 | 113 | /** |
universe@576 | 114 | * Wraps a string that does not need to be zero-terminated. |
universe@576 | 115 | * |
universe@576 | 116 | * The argument may be \c NULL if the length is zero. |
universe@576 | 117 | * |
universe@576 | 118 | * \note the wrapped string will share the specified pointer to the string. |
universe@576 | 119 | * If you do want a copy, use cx_strdup() on the return value of this function. |
universe@576 | 120 | * |
universe@576 | 121 | * If you need to wrap a constant string, use cx_strn(). |
universe@576 | 122 | * |
universe@584 | 123 | * @param cstring the string to wrap (or \c NULL, only if the length is zero) |
universe@576 | 124 | * @param length the length of the string |
universe@576 | 125 | * @return the wrapped string |
universe@576 | 126 | * |
universe@576 | 127 | * @see cx_mutstr() |
universe@576 | 128 | */ |
universe@576 | 129 | __attribute__((__warn_unused_result__)) |
universe@576 | 130 | cxmutstr cx_mutstrn( |
universe@576 | 131 | char *cstring, |
universe@576 | 132 | size_t length |
universe@576 | 133 | ); |
universe@576 | 134 | |
universe@576 | 135 | /** |
universe@576 | 136 | * Wraps a string that must be zero-terminated. |
universe@576 | 137 | * |
universe@576 | 138 | * The length is implicitly inferred by using a call to \c strlen(). |
universe@576 | 139 | * |
universe@576 | 140 | * \note the wrapped string will share the specified pointer to the string. |
universe@576 | 141 | * If you do want a copy, use cx_strdup() on the return value of this function. |
universe@576 | 142 | * |
universe@576 | 143 | * If you need to wrap a non-constant string, use cx_mutstr(). |
universe@576 | 144 | * |
universe@584 | 145 | * @param cstring the string to wrap, must be zero-terminated |
universe@576 | 146 | * @return the wrapped string |
universe@576 | 147 | * |
universe@576 | 148 | * @see cx_strn() |
universe@576 | 149 | */ |
universe@584 | 150 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 151 | cxstring cx_str(char const *cstring); |
universe@576 | 152 | |
universe@576 | 153 | |
universe@576 | 154 | /** |
universe@576 | 155 | * Wraps a string that does not need to be zero-terminated. |
universe@576 | 156 | * |
universe@576 | 157 | * The argument may be \c NULL if the length is zero. |
universe@576 | 158 | * |
universe@576 | 159 | * \note the wrapped string will share the specified pointer to the string. |
universe@576 | 160 | * If you do want a copy, use cx_strdup() on the return value of this function. |
universe@576 | 161 | * |
universe@576 | 162 | * If you need to wrap a non-constant string, use cx_mutstrn(). |
universe@576 | 163 | * |
universe@584 | 164 | * @param cstring the string to wrap (or \c NULL, only if the length is zero) |
universe@576 | 165 | * @param length the length of the string |
universe@576 | 166 | * @return the wrapped string |
universe@576 | 167 | * |
universe@576 | 168 | * @see cx_str() |
universe@576 | 169 | */ |
universe@576 | 170 | __attribute__((__warn_unused_result__)) |
universe@576 | 171 | cxstring cx_strn( |
universe@576 | 172 | char const *cstring, |
universe@576 | 173 | size_t length |
universe@576 | 174 | ); |
universe@576 | 175 | |
universe@576 | 176 | /** |
universe@576 | 177 | * Casts a mutable string to an immutable string. |
universe@576 | 178 | * |
universe@576 | 179 | * \note This is not seriously a cast. Instead you get a copy |
universe@576 | 180 | * of the struct with the desired pointer type. Both structs still |
universe@576 | 181 | * point to the same location, though! |
universe@576 | 182 | * |
universe@576 | 183 | * @param str the mutable string to cast |
universe@576 | 184 | * @return an immutable copy of the string pointer |
universe@576 | 185 | */ |
universe@576 | 186 | __attribute__((__warn_unused_result__)) |
universe@576 | 187 | cxstring cx_strcast(cxmutstr str); |
universe@576 | 188 | |
universe@576 | 189 | /** |
universe@576 | 190 | * Passes the pointer in this string to \c free(). |
universe@576 | 191 | * |
universe@576 | 192 | * The pointer in the struct is set to \c NULL and the length is set to zero. |
universe@576 | 193 | * |
universe@576 | 194 | * \note There is no implementation for cxstring, because it is unlikely that |
universe@576 | 195 | * you ever have a \c char \c const* you are really supposed to free. If you |
universe@576 | 196 | * encounter such situation, you should double-check your code. |
universe@576 | 197 | * |
universe@576 | 198 | * @param str the string to free |
universe@576 | 199 | */ |
universe@583 | 200 | __attribute__((__nonnull__)) |
universe@576 | 201 | void cx_strfree(cxmutstr *str); |
universe@576 | 202 | |
universe@576 | 203 | /** |
universe@583 | 204 | * Passes the pointer in this string to the allocators free function. |
universe@583 | 205 | * |
universe@583 | 206 | * The pointer in the struct is set to \c NULL and the length is set to zero. |
universe@583 | 207 | * |
universe@583 | 208 | * \note There is no implementation for cxstring, because it is unlikely that |
universe@583 | 209 | * you ever have a \c char \c const* you are really supposed to free. If you |
universe@583 | 210 | * encounter such situation, you should double-check your code. |
universe@583 | 211 | * |
universe@583 | 212 | * @param alloc the allocator |
universe@583 | 213 | * @param str the string to free |
universe@583 | 214 | */ |
universe@583 | 215 | __attribute__((__nonnull__)) |
universe@583 | 216 | void cx_strfree_a( |
universe@583 | 217 | CxAllocator *alloc, |
universe@583 | 218 | cxmutstr *str |
universe@583 | 219 | ); |
universe@583 | 220 | |
universe@583 | 221 | /** |
universe@576 | 222 | * Returns the accumulated length of all specified strings. |
universe@576 | 223 | * |
universe@576 | 224 | * \attention if the count argument is larger than the number of the |
universe@576 | 225 | * specified strings, the behavior is undefined. |
universe@576 | 226 | * |
universe@576 | 227 | * @param count the total number of specified strings |
universe@576 | 228 | * @param ... all strings |
universe@576 | 229 | * @return the accumulated length of all strings |
universe@576 | 230 | */ |
universe@576 | 231 | __attribute__((__warn_unused_result__)) |
universe@576 | 232 | size_t cx_strlen( |
universe@576 | 233 | size_t count, |
universe@576 | 234 | ... |
universe@576 | 235 | ); |
universe@576 | 236 | |
universe@576 | 237 | /** |
universe@576 | 238 | * Concatenates two or more strings. |
universe@576 | 239 | * |
universe@576 | 240 | * The resulting string will be allocated by the specified allocator. |
universe@576 | 241 | * So developers \em must pass the return value to cx_strfree() eventually. |
universe@576 | 242 | * |
universe@576 | 243 | * \note It is guaranteed that there is only one allocation. |
universe@576 | 244 | * |
universe@576 | 245 | * @param alloc the allocator to use |
universe@576 | 246 | * @param count the total number of strings to concatenate |
universe@576 | 247 | * @param ... all strings |
universe@576 | 248 | * @return the concatenated string |
universe@576 | 249 | */ |
universe@576 | 250 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 251 | cxmutstr cx_strcat_a( |
universe@576 | 252 | CxAllocator *alloc, |
universe@576 | 253 | size_t count, |
universe@576 | 254 | ... |
universe@576 | 255 | ); |
universe@576 | 256 | |
universe@576 | 257 | /** |
universe@576 | 258 | * Concatenates two or more strings. |
universe@576 | 259 | * |
universe@576 | 260 | * The resulting string will be allocated by standard \c malloc(). |
universe@576 | 261 | * So developers \em must pass the return value to cx_strfree() eventually. |
universe@576 | 262 | * |
universe@576 | 263 | * @param count the total number of strings to concatenate |
universe@576 | 264 | * @param ... all strings |
universe@576 | 265 | * @return the concatenated string |
universe@576 | 266 | */ |
universe@576 | 267 | #define cx_strcat(count, ...) \ |
universe@576 | 268 | cx_strcat_a(cxDefaultAllocator, count, __VA_ARGS__) |
universe@576 | 269 | |
universe@576 | 270 | /** |
universe@576 | 271 | * Returns a substring starting at the specified location. |
universe@576 | 272 | * |
universe@576 | 273 | * \attention the new string references the same memory area as the |
universe@576 | 274 | * input string and is usually \em not zero-terminated. |
universe@576 | 275 | * Use cx_strdup() to get a copy. |
universe@576 | 276 | * |
universe@576 | 277 | * @param string input string |
universe@576 | 278 | * @param start start location of the substring |
universe@576 | 279 | * @return a substring of \p string starting at \p start |
universe@576 | 280 | * |
universe@576 | 281 | * @see cx_strsubsl() |
universe@576 | 282 | * @see cx_strsubs_m() |
universe@576 | 283 | * @see cx_strsubsl_m() |
universe@576 | 284 | */ |
universe@576 | 285 | __attribute__((__warn_unused_result__)) |
universe@576 | 286 | cxstring cx_strsubs( |
universe@576 | 287 | cxstring string, |
universe@576 | 288 | size_t start |
universe@576 | 289 | ); |
universe@576 | 290 | |
universe@576 | 291 | /** |
universe@576 | 292 | * Returns a substring starting at the specified location. |
universe@576 | 293 | * |
universe@576 | 294 | * The returned string will be limited to \p length bytes or the number |
universe@576 | 295 | * of bytes available in \p string, whichever is smaller. |
universe@576 | 296 | * |
universe@576 | 297 | * \attention the new string references the same memory area as the |
universe@576 | 298 | * input string and is usually \em not zero-terminated. |
universe@576 | 299 | * Use cx_strdup() to get a copy. |
universe@576 | 300 | * |
universe@576 | 301 | * @param string input string |
universe@576 | 302 | * @param start start location of the substring |
universe@576 | 303 | * @param length the maximum length of the returned string |
universe@576 | 304 | * @return a substring of \p string starting at \p start |
universe@576 | 305 | * |
universe@576 | 306 | * @see cx_strsubs() |
universe@576 | 307 | * @see cx_strsubs_m() |
universe@576 | 308 | * @see cx_strsubsl_m() |
universe@576 | 309 | */ |
universe@576 | 310 | __attribute__((__warn_unused_result__)) |
universe@576 | 311 | cxstring cx_strsubsl( |
universe@576 | 312 | cxstring string, |
universe@576 | 313 | size_t start, |
universe@576 | 314 | size_t length |
universe@576 | 315 | ); |
universe@576 | 316 | |
universe@576 | 317 | /** |
universe@576 | 318 | * Returns a substring starting at the specified location. |
universe@576 | 319 | * |
universe@576 | 320 | * \attention the new string references the same memory area as the |
universe@576 | 321 | * input string and is usually \em not zero-terminated. |
universe@576 | 322 | * Use cx_strdup() to get a copy. |
universe@576 | 323 | * |
universe@576 | 324 | * @param string input string |
universe@576 | 325 | * @param start start location of the substring |
universe@576 | 326 | * @return a substring of \p string starting at \p start |
universe@576 | 327 | * |
universe@576 | 328 | * @see cx_strsubsl_m() |
universe@576 | 329 | * @see cx_strsubs() |
universe@576 | 330 | * @see cx_strsubsl() |
universe@576 | 331 | */ |
universe@576 | 332 | __attribute__((__warn_unused_result__)) |
universe@576 | 333 | cxmutstr cx_strsubs_m( |
universe@576 | 334 | cxmutstr string, |
universe@576 | 335 | size_t start |
universe@576 | 336 | ); |
universe@576 | 337 | |
universe@576 | 338 | /** |
universe@576 | 339 | * Returns a substring starting at the specified location. |
universe@576 | 340 | * |
universe@576 | 341 | * The returned string will be limited to \p length bytes or the number |
universe@576 | 342 | * of bytes available in \p string, whichever is smaller. |
universe@576 | 343 | * |
universe@576 | 344 | * \attention the new string references the same memory area as the |
universe@576 | 345 | * input string and is usually \em not zero-terminated. |
universe@576 | 346 | * Use cx_strdup() to get a copy. |
universe@576 | 347 | * |
universe@576 | 348 | * @param string input string |
universe@576 | 349 | * @param start start location of the substring |
universe@576 | 350 | * @param length the maximum length of the returned string |
universe@576 | 351 | * @return a substring of \p string starting at \p start |
universe@576 | 352 | * |
universe@576 | 353 | * @see cx_strsubs_m() |
universe@576 | 354 | * @see cx_strsubs() |
universe@576 | 355 | * @see cx_strsubsl() |
universe@576 | 356 | */ |
universe@576 | 357 | __attribute__((__warn_unused_result__)) |
universe@576 | 358 | cxmutstr cx_strsubsl_m( |
universe@576 | 359 | cxmutstr string, |
universe@576 | 360 | size_t start, |
universe@576 | 361 | size_t length |
universe@576 | 362 | ); |
universe@576 | 363 | |
universe@576 | 364 | /** |
universe@576 | 365 | * Returns a substring starting at the location of the first occurrence of the |
universe@576 | 366 | * specified character. |
universe@576 | 367 | * |
universe@576 | 368 | * If the string does not contain the character, an empty string is returned. |
universe@576 | 369 | * |
universe@576 | 370 | * @param string the string where to locate the character |
universe@576 | 371 | * @param chr the character to locate |
universe@576 | 372 | * @return a substring starting at the first location of \p chr |
universe@576 | 373 | * |
universe@576 | 374 | * @see cx_strchr_m() |
universe@576 | 375 | */ |
universe@576 | 376 | __attribute__((__warn_unused_result__)) |
universe@576 | 377 | cxstring cx_strchr( |
universe@576 | 378 | cxstring string, |
universe@576 | 379 | int chr |
universe@576 | 380 | ); |
universe@576 | 381 | |
universe@576 | 382 | /** |
universe@576 | 383 | * Returns a substring starting at the location of the first occurrence of the |
universe@576 | 384 | * specified character. |
universe@576 | 385 | * |
universe@576 | 386 | * If the string does not contain the character, an empty string is returned. |
universe@576 | 387 | * |
universe@576 | 388 | * @param string the string where to locate the character |
universe@576 | 389 | * @param chr the character to locate |
universe@576 | 390 | * @return a substring starting at the first location of \p chr |
universe@576 | 391 | * |
universe@576 | 392 | * @see cx_strchr() |
universe@576 | 393 | */ |
universe@576 | 394 | __attribute__((__warn_unused_result__)) |
universe@576 | 395 | cxmutstr cx_strchr_m( |
universe@576 | 396 | cxmutstr string, |
universe@576 | 397 | int chr |
universe@576 | 398 | ); |
universe@576 | 399 | |
universe@576 | 400 | /** |
universe@576 | 401 | * Returns a substring starting at the location of the last occurrence of the |
universe@576 | 402 | * specified character. |
universe@576 | 403 | * |
universe@576 | 404 | * If the string does not contain the character, an empty string is returned. |
universe@576 | 405 | * |
universe@576 | 406 | * @param string the string where to locate the character |
universe@576 | 407 | * @param chr the character to locate |
universe@576 | 408 | * @return a substring starting at the last location of \p chr |
universe@576 | 409 | * |
universe@576 | 410 | * @see cx_strrchr_m() |
universe@576 | 411 | */ |
universe@576 | 412 | __attribute__((__warn_unused_result__)) |
universe@576 | 413 | cxstring cx_strrchr( |
universe@576 | 414 | cxstring string, |
universe@576 | 415 | int chr |
universe@576 | 416 | ); |
universe@576 | 417 | |
universe@576 | 418 | /** |
universe@576 | 419 | * Returns a substring starting at the location of the last occurrence of the |
universe@576 | 420 | * specified character. |
universe@576 | 421 | * |
universe@576 | 422 | * If the string does not contain the character, an empty string is returned. |
universe@576 | 423 | * |
universe@576 | 424 | * @param string the string where to locate the character |
universe@576 | 425 | * @param chr the character to locate |
universe@576 | 426 | * @return a substring starting at the last location of \p chr |
universe@576 | 427 | * |
universe@576 | 428 | * @see cx_strrchr() |
universe@576 | 429 | */ |
universe@576 | 430 | __attribute__((__warn_unused_result__)) |
universe@576 | 431 | cxmutstr cx_strrchr_m( |
universe@576 | 432 | cxmutstr string, |
universe@576 | 433 | int chr |
universe@576 | 434 | ); |
universe@576 | 435 | |
universe@576 | 436 | /** |
universe@576 | 437 | * Returns a substring starting at the location of the first occurrence of the |
universe@576 | 438 | * specified string. |
universe@576 | 439 | * |
universe@576 | 440 | * If \p haystack does not contain \p needle, an empty string is returned. |
universe@576 | 441 | * |
universe@576 | 442 | * If \p needle is an empty string, the complete \p haystack is |
universe@576 | 443 | * returned. |
universe@576 | 444 | * |
universe@576 | 445 | * @param haystack the string to be scanned |
universe@576 | 446 | * @param needle string containing the sequence of characters to match |
universe@576 | 447 | * @return a substring starting at the first occurrence of |
universe@576 | 448 | * \p needle, or an empty string, if the sequence is not |
universe@576 | 449 | * contained |
universe@576 | 450 | * @see cx_strstr_m() |
universe@576 | 451 | */ |
universe@576 | 452 | __attribute__((__warn_unused_result__)) |
universe@576 | 453 | cxstring cx_strstr( |
universe@576 | 454 | cxstring haystack, |
universe@576 | 455 | cxstring needle |
universe@576 | 456 | ); |
universe@576 | 457 | |
universe@576 | 458 | /** |
universe@576 | 459 | * Returns a substring starting at the location of the first occurrence of the |
universe@576 | 460 | * specified string. |
universe@576 | 461 | * |
universe@576 | 462 | * If \p haystack does not contain \p needle, an empty string is returned. |
universe@576 | 463 | * |
universe@576 | 464 | * If \p needle is an empty string, the complete \p haystack is |
universe@576 | 465 | * returned. |
universe@576 | 466 | * |
universe@576 | 467 | * @param haystack the string to be scanned |
universe@576 | 468 | * @param needle string containing the sequence of characters to match |
universe@576 | 469 | * @return a substring starting at the first occurrence of |
universe@576 | 470 | * \p needle, or an empty string, if the sequence is not |
universe@576 | 471 | * contained |
universe@576 | 472 | * @see cx_strstr() |
universe@576 | 473 | */ |
universe@576 | 474 | __attribute__((__warn_unused_result__)) |
universe@576 | 475 | cxmutstr cx_strstr_m( |
universe@576 | 476 | cxmutstr haystack, |
universe@576 | 477 | cxstring needle |
universe@576 | 478 | ); |
universe@576 | 479 | |
universe@576 | 480 | /** |
universe@576 | 481 | * Splits a given string using a delimiter string. |
universe@576 | 482 | * |
universe@576 | 483 | * \note The resulting array contains strings that point to the source |
universe@576 | 484 | * \p string. Use cx_strdup() to get copies. |
universe@576 | 485 | * |
universe@576 | 486 | * @param string the string to split |
universe@576 | 487 | * @param delim the delimiter |
universe@576 | 488 | * @param limit the maximum number of split items |
universe@576 | 489 | * @param output a pre-allocated array of at least \p limit length |
universe@576 | 490 | * @return the actual number of split items |
universe@576 | 491 | */ |
universe@576 | 492 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 493 | size_t cx_strsplit( |
universe@576 | 494 | cxstring string, |
universe@576 | 495 | cxstring delim, |
universe@576 | 496 | size_t limit, |
universe@576 | 497 | cxstring *output |
universe@576 | 498 | ); |
universe@576 | 499 | |
universe@576 | 500 | /** |
universe@576 | 501 | * Splits a given string using a delimiter string. |
universe@576 | 502 | * |
universe@576 | 503 | * The array pointed to by \p output will be allocated by \p allocator. |
universe@576 | 504 | * |
universe@576 | 505 | * \note The resulting array contains strings that point to the source |
universe@576 | 506 | * \p string. Use cx_strdup() to get copies. |
universe@576 | 507 | * |
universe@576 | 508 | * \attention If allocation fails, the \c NULL pointer will be written to |
universe@576 | 509 | * \p output and the number returned will be zero. |
universe@576 | 510 | * |
universe@576 | 511 | * @param allocator the allocator to use for allocating the resulting array |
universe@576 | 512 | * @param string the string to split |
universe@576 | 513 | * @param delim the delimiter |
universe@576 | 514 | * @param limit the maximum number of split items |
universe@576 | 515 | * @param output a pointer where the address of the allocated array shall be |
universe@576 | 516 | * written to |
universe@576 | 517 | * @return the actual number of split items |
universe@576 | 518 | */ |
universe@576 | 519 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 520 | size_t cx_strsplit_a( |
universe@576 | 521 | CxAllocator *allocator, |
universe@576 | 522 | cxstring string, |
universe@576 | 523 | cxstring delim, |
universe@576 | 524 | size_t limit, |
universe@576 | 525 | cxstring **output |
universe@576 | 526 | ); |
universe@576 | 527 | |
universe@576 | 528 | |
universe@576 | 529 | /** |
universe@576 | 530 | * Splits a given string using a delimiter string. |
universe@576 | 531 | * |
universe@576 | 532 | * \note The resulting array contains strings that point to the source |
universe@576 | 533 | * \p string. Use cx_strdup() to get copies. |
universe@576 | 534 | * |
universe@576 | 535 | * @param string the string to split |
universe@576 | 536 | * @param delim the delimiter |
universe@576 | 537 | * @param limit the maximum number of split items |
universe@576 | 538 | * @param output a pre-allocated array of at least \p limit length |
universe@576 | 539 | * @return the actual number of split items |
universe@576 | 540 | */ |
universe@576 | 541 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 542 | size_t cx_strsplit_m( |
universe@576 | 543 | cxmutstr string, |
universe@576 | 544 | cxstring delim, |
universe@576 | 545 | size_t limit, |
universe@576 | 546 | cxmutstr *output |
universe@576 | 547 | ); |
universe@576 | 548 | |
universe@576 | 549 | /** |
universe@576 | 550 | * Splits a given string using a delimiter string. |
universe@576 | 551 | * |
universe@576 | 552 | * The array pointed to by \p output will be allocated by \p allocator. |
universe@576 | 553 | * |
universe@576 | 554 | * \note The resulting array contains strings that point to the source |
universe@576 | 555 | * \p string. Use cx_strdup() to get copies. |
universe@576 | 556 | * |
universe@576 | 557 | * \attention If allocation fails, the \c NULL pointer will be written to |
universe@576 | 558 | * \p output and the number returned will be zero. |
universe@576 | 559 | * |
universe@576 | 560 | * @param allocator the allocator to use for allocating the resulting array |
universe@576 | 561 | * @param string the string to split |
universe@576 | 562 | * @param delim the delimiter |
universe@576 | 563 | * @param limit the maximum number of split items |
universe@576 | 564 | * @param output a pointer where the address of the allocated array shall be |
universe@576 | 565 | * written to |
universe@576 | 566 | * @return the actual number of split items |
universe@576 | 567 | */ |
universe@576 | 568 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 569 | size_t cx_strsplit_ma( |
universe@576 | 570 | CxAllocator *allocator, |
universe@576 | 571 | cxmutstr string, |
universe@576 | 572 | cxstring delim, |
universe@576 | 573 | size_t limit, |
universe@576 | 574 | cxmutstr **output |
universe@576 | 575 | ); |
universe@576 | 576 | |
universe@576 | 577 | /** |
universe@576 | 578 | * Compares two strings. |
universe@576 | 579 | * |
universe@576 | 580 | * @param s1 the first string |
universe@576 | 581 | * @param s2 the second string |
universe@576 | 582 | * @return negative if \p s1 is smaller than \p s2, positive if \p s1 is larger |
universe@576 | 583 | * than \p s2, zero if both strings equal |
universe@576 | 584 | */ |
universe@576 | 585 | __attribute__((__warn_unused_result__)) |
universe@576 | 586 | int cx_strcmp( |
universe@576 | 587 | cxstring s1, |
universe@576 | 588 | cxstring s2 |
universe@576 | 589 | ); |
universe@576 | 590 | |
universe@576 | 591 | /** |
universe@576 | 592 | * Compares two strings ignoring case. |
universe@576 | 593 | * |
universe@576 | 594 | * @param s1 the first string |
universe@576 | 595 | * @param s2 the second string |
universe@576 | 596 | * @return negative if \p s1 is smaller than \p s2, positive if \p s1 is larger |
universe@576 | 597 | * than \p s2, zero if both strings equal ignoring case |
universe@576 | 598 | */ |
universe@576 | 599 | __attribute__((__warn_unused_result__)) |
universe@576 | 600 | int cx_strcasecmp( |
universe@576 | 601 | cxstring s1, |
universe@576 | 602 | cxstring s2 |
universe@576 | 603 | ); |
universe@576 | 604 | |
universe@576 | 605 | |
universe@576 | 606 | /** |
universe@576 | 607 | * Creates a duplicate of the specified string. |
universe@576 | 608 | * |
universe@576 | 609 | * The new string will contain a copy allocated by \p allocator. |
universe@576 | 610 | * |
universe@576 | 611 | * \note The returned string is guaranteed to be zero-terminated and can safely |
universe@576 | 612 | * be passed to other APIs. |
universe@576 | 613 | * |
universe@576 | 614 | * @param allocator the allocator to use |
universe@576 | 615 | * @param string the string to duplicate |
universe@576 | 616 | * @return a duplicate of the string |
universe@576 | 617 | * @see cx_strdup() |
universe@576 | 618 | */ |
universe@576 | 619 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@576 | 620 | cxmutstr cx_strdup_a( |
universe@576 | 621 | CxAllocator *allocator, |
universe@576 | 622 | cxstring string |
universe@576 | 623 | ); |
universe@576 | 624 | |
universe@576 | 625 | /** |
universe@578 | 626 | * Creates a duplicate of the specified string. |
universe@578 | 627 | * |
universe@578 | 628 | * The new string will contain a copy allocated by standard |
universe@578 | 629 | * \c malloc(). So developers \em must pass the return value to cx_strfree(). |
universe@578 | 630 | * |
universe@578 | 631 | * \note The returned string is guaranteed to be zero-terminated and can safely |
universe@578 | 632 | * be passed to other APIs. |
universe@578 | 633 | * |
universe@578 | 634 | * @param string the string to duplicate |
universe@578 | 635 | * @return a duplicate of the string |
universe@578 | 636 | * @see cx_strdup_a() |
universe@578 | 637 | */ |
universe@578 | 638 | #define cx_strdup(string) cx_strdup_a(cxDefaultAllocator, string) |
universe@578 | 639 | |
universe@578 | 640 | /** |
universe@576 | 641 | * Omits leading and trailing spaces. |
universe@576 | 642 | * |
universe@576 | 643 | * \note the returned string references the same memory, thus you |
universe@576 | 644 | * must \em not free the returned memory. |
universe@576 | 645 | * |
universe@576 | 646 | * @param string the string that shall be trimmed |
universe@576 | 647 | * @return the trimmed string |
universe@576 | 648 | */ |
universe@576 | 649 | __attribute__((__warn_unused_result__)) |
universe@576 | 650 | cxstring cx_strtrim(cxstring string); |
universe@576 | 651 | |
universe@576 | 652 | /** |
universe@576 | 653 | * Omits leading and trailing spaces. |
universe@576 | 654 | * |
universe@576 | 655 | * \note the returned string references the same memory, thus you |
universe@576 | 656 | * must \em not free the returned memory. |
universe@576 | 657 | * |
universe@576 | 658 | * @param string the string that shall be trimmed |
universe@576 | 659 | * @return the trimmed string |
universe@576 | 660 | */ |
universe@576 | 661 | __attribute__((__warn_unused_result__)) |
universe@576 | 662 | cxmutstr cx_strtrim_m(cxmutstr string); |
universe@576 | 663 | |
universe@576 | 664 | /** |
universe@576 | 665 | * Checks, if a string has a specific prefix. |
universe@576 | 666 | * |
universe@576 | 667 | * @param string the string to check |
universe@576 | 668 | * @param prefix the prefix the string should have |
universe@576 | 669 | * @return \c true, if and only if the string has the specified prefix, |
universe@576 | 670 | * \c false otherwise |
universe@576 | 671 | */ |
universe@576 | 672 | __attribute__((__warn_unused_result__)) |
universe@576 | 673 | bool cx_strprefix( |
universe@576 | 674 | cxstring string, |
universe@576 | 675 | cxstring prefix |
universe@576 | 676 | ); |
universe@576 | 677 | |
universe@576 | 678 | /** |
universe@576 | 679 | * Checks, if a string has a specific suffix. |
universe@576 | 680 | * |
universe@576 | 681 | * @param string the string to check |
universe@576 | 682 | * @param suffix the suffix the string should have |
universe@576 | 683 | * @return \c true, if and only if the string has the specified suffix, |
universe@576 | 684 | * \c false otherwise |
universe@576 | 685 | */ |
universe@576 | 686 | __attribute__((__warn_unused_result__)) |
universe@581 | 687 | bool cx_strsuffix( |
universe@576 | 688 | cxstring string, |
universe@576 | 689 | cxstring suffix |
universe@576 | 690 | ); |
universe@576 | 691 | |
universe@576 | 692 | /** |
universe@576 | 693 | * Checks, if a string has a specific prefix, ignoring the case. |
universe@576 | 694 | * |
universe@576 | 695 | * @param string the string to check |
universe@576 | 696 | * @param prefix the prefix the string should have |
universe@576 | 697 | * @return \c true, if and only if the string has the specified prefix, |
universe@576 | 698 | * \c false otherwise |
universe@576 | 699 | */ |
universe@576 | 700 | __attribute__((__warn_unused_result__)) |
universe@581 | 701 | bool cx_strcaseprefix( |
universe@576 | 702 | cxstring string, |
universe@576 | 703 | cxstring prefix |
universe@576 | 704 | ); |
universe@576 | 705 | |
universe@576 | 706 | /** |
universe@576 | 707 | * Checks, if a string has a specific suffix, ignoring the case. |
universe@576 | 708 | * |
universe@576 | 709 | * @param string the string to check |
universe@576 | 710 | * @param suffix the suffix the string should have |
universe@576 | 711 | * @return \c true, if and only if the string has the specified suffix, |
universe@576 | 712 | * \c false otherwise |
universe@576 | 713 | */ |
universe@576 | 714 | __attribute__((__warn_unused_result__)) |
universe@581 | 715 | bool cx_strcasesuffix( |
universe@576 | 716 | cxstring string, |
universe@576 | 717 | cxstring suffix |
universe@576 | 718 | ); |
universe@576 | 719 | |
universe@576 | 720 | /** |
universe@576 | 721 | * Converts the string to lower case. |
universe@576 | 722 | * |
universe@576 | 723 | * The change is made in-place. If you want a copy, use cx_strdup(), first. |
universe@576 | 724 | * |
universe@576 | 725 | * @param string the string to modify |
universe@576 | 726 | * @see cx_strdup() |
universe@576 | 727 | */ |
universe@576 | 728 | void cx_strlower(cxmutstr string); |
universe@576 | 729 | |
universe@576 | 730 | /** |
universe@576 | 731 | * Converts the string to upper case. |
universe@576 | 732 | * |
universe@576 | 733 | * The change is made in-place. If you want a copy, use cx_strdup(), first. |
universe@576 | 734 | * |
universe@576 | 735 | * @param string the string to modify |
universe@576 | 736 | * @see cx_strdup() |
universe@576 | 737 | */ |
universe@576 | 738 | void cx_strupper(cxmutstr string); |
universe@576 | 739 | |
universe@576 | 740 | /** |
universe@576 | 741 | * Replaces a pattern in a string with another string. |
universe@576 | 742 | * |
universe@576 | 743 | * The pattern is taken literally and is no regular expression. |
universe@576 | 744 | * Replaces at most \p replmax occurrences. |
universe@576 | 745 | * |
universe@576 | 746 | * The returned string will be allocated by \p allocator. |
universe@576 | 747 | * |
universe@576 | 748 | * If allocation fails, or the input string is empty, |
universe@583 | 749 | * the returned string will be empty. |
universe@576 | 750 | * |
universe@576 | 751 | * @param allocator the allocator to use |
universe@576 | 752 | * @param str the string where replacements should be applied |
universe@576 | 753 | * @param pattern the pattern to search for |
universe@576 | 754 | * @param replacement the replacement string |
universe@576 | 755 | * @param replmax maximum number of replacements |
universe@576 | 756 | * @return the resulting string after applying the replacements |
universe@576 | 757 | */ |
universe@576 | 758 | __attribute__((__warn_unused_result__, __nonnull__)) |
universe@583 | 759 | cxmutstr cx_strreplacen_a( |
universe@576 | 760 | CxAllocator *allocator, |
universe@576 | 761 | cxstring str, |
universe@576 | 762 | cxstring pattern, |
universe@576 | 763 | cxstring replacement, |
universe@576 | 764 | size_t replmax |
universe@576 | 765 | ); |
universe@576 | 766 | |
universe@578 | 767 | /** |
universe@578 | 768 | * Replaces a pattern in a string with another string. |
universe@578 | 769 | * |
universe@578 | 770 | * The pattern is taken literally and is no regular expression. |
universe@578 | 771 | * Replaces at most \p replmax occurrences. |
universe@578 | 772 | * |
universe@578 | 773 | * The returned string will be allocated by \c malloc() and \em must be passed |
universe@578 | 774 | * to cx_strfree() eventually. |
universe@578 | 775 | * |
universe@578 | 776 | * If allocation fails, or the input string is empty, |
universe@583 | 777 | * the returned string will be empty. |
universe@578 | 778 | * |
universe@578 | 779 | * @param str the string where replacements should be applied |
universe@578 | 780 | * @param pattern the pattern to search for |
universe@578 | 781 | * @param replacement the replacement string |
universe@578 | 782 | * @param replmax maximum number of replacements |
universe@578 | 783 | * @return the resulting string after applying the replacements |
universe@578 | 784 | */ |
universe@583 | 785 | #define cx_strreplacen(str, pattern, replacement, replmax) \ |
universe@583 | 786 | cx_strreplacen_a(cxDefaultAllocator, str, pattern, replacement, replmax) |
universe@583 | 787 | |
universe@583 | 788 | /** |
universe@583 | 789 | * Replaces a pattern in a string with another string. |
universe@583 | 790 | * |
universe@583 | 791 | * The pattern is taken literally and is no regular expression. |
universe@583 | 792 | * |
universe@583 | 793 | * The returned string will be allocated by \p allocator. |
universe@583 | 794 | * |
universe@583 | 795 | * If allocation fails, or the input string is empty, |
universe@583 | 796 | * the returned string will be empty. |
universe@583 | 797 | * |
universe@583 | 798 | * @param allocator the allocator to use |
universe@583 | 799 | * @param str the string where replacements should be applied |
universe@583 | 800 | * @param pattern the pattern to search for |
universe@583 | 801 | * @param replacement the replacement string |
universe@583 | 802 | * @return the resulting string after applying the replacements |
universe@583 | 803 | */ |
universe@583 | 804 | #define cx_strreplace_a(allocator, str, pattern, replacement) \ |
universe@583 | 805 | cx_strreplacen_a(allocator, str, pattern, replacement, SIZE_MAX) |
universe@583 | 806 | |
universe@583 | 807 | /** |
universe@583 | 808 | * Replaces a pattern in a string with another string. |
universe@583 | 809 | * |
universe@583 | 810 | * The pattern is taken literally and is no regular expression. |
universe@583 | 811 | * Replaces at most \p replmax occurrences. |
universe@583 | 812 | * |
universe@583 | 813 | * The returned string will be allocated by \c malloc() and \em must be passed |
universe@583 | 814 | * to cx_strfree() eventually. |
universe@583 | 815 | * |
universe@583 | 816 | * If allocation fails, or the input string is empty, |
universe@583 | 817 | * the returned string will be empty. |
universe@583 | 818 | * |
universe@583 | 819 | * @param str the string where replacements should be applied |
universe@583 | 820 | * @param pattern the pattern to search for |
universe@583 | 821 | * @param replacement the replacement string |
universe@583 | 822 | * @return the resulting string after applying the replacements |
universe@583 | 823 | */ |
universe@583 | 824 | #define cx_strreplace(str, pattern, replacement) \ |
universe@583 | 825 | cx_strreplacen_a(cxDefaultAllocator, str, pattern, replacement, SIZE_MAX) |
universe@578 | 826 | |
universe@576 | 827 | #ifdef __cplusplus |
universe@576 | 828 | } // extern "C" |
universe@576 | 829 | #endif |
universe@576 | 830 | |
universe@576 | 831 | #endif //UCX_STRING_H |