2 * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
4 /* Leave the OpenBSD version below so we can track upstream fixes */
5 /* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */
8 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
10 * Permission to use, copy, modify, and distribute this software for any
11 * purpose with or without fee is hereby granted, provided that the above
12 * copyright notice and this permission notice appear in all copies.
14 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
15 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
17 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
19 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
20 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
41 #include "eina_private.h"
44 /*============================================================================*
46 *============================================================================*/
53 * Internal helper function used by eina_str_has_suffix() and
54 * eina_str_has_extension()
56 static inline Eina_Bool
57 eina_str_has_suffix_helper(const char *str,
59 int (*cmp)(const char *, const char *))
64 str_len = strlen(str);
65 suffix_len = eina_strlen_bounded(suffix, str_len);
66 if (suffix_len == (size_t)-1)
69 return cmp(str + str_len - suffix_len, suffix) == 0;
73 eina_str_split_full_helper(const char *str, const char *delim, int max_tokens, unsigned int *elements)
83 if (elements) *elements = 0;
89 /* count tokens and check strlen(str) */
92 const char *d = delim, *d_end = d + dlen;
93 const char *tmp = src;
94 for (; (d < d_end) && (*tmp != '\0'); d++, tmp++)
96 if (EINA_LIKELY(*d != *tmp))
99 if (EINA_UNLIKELY(d == d_end))
109 if ((max_tokens > 0) && (tokens > (unsigned int)max_tokens))
112 str_array = malloc(sizeof(char *) * (tokens + 2));
115 if (elements) *elements = 0;
123 if (elements) *elements = 0;
127 /* copy tokens and string */
133 const char *d = delim, *d_end = d + dlen;
134 const char *tmp = src;
135 for (; (d < d_end) && (*tmp != '\0'); d++, tmp++)
137 if (EINA_LIKELY(*d != *tmp))
140 if (EINA_UNLIKELY(d == d_end))
146 str_array[tokens] = s;
156 str_array[tokens + 1] = NULL;
157 if (elements) *elements = (tokens + 1);
165 /*============================================================================*
167 *============================================================================*/
169 /*============================================================================*
171 *============================================================================*/
174 * @addtogroup Eina_String_Group String
176 * @brief These functions provide useful C string management.
183 * @brief Copy a c-string to another.
185 * @param dst The destination string.
186 * @param src The source string.
187 * @param siz The size of the destination string.
188 * @return The length of the source string.
190 * This function copies up to @p siz - 1 characters from the
191 * NUL-terminated string @p src to @p dst, NUL-terminating the result
192 * (unless @p siz is equal to 0). The returned value is the length of
193 * @p src. If the returned value is greater than @p siz, truncation
197 eina_strlcpy(char *dst, const char *src, size_t siz)
200 return strlcpy(dst, src, siz);
206 /* Copy as many bytes as will fit */
211 if ((*d++ = *s++) == '\0')
216 /* Not enough room in dst, add NUL and traverse rest of src */
220 *d = '\0'; /* NUL-terminate dst */
225 return(s - src - 1); /* count does not include NUL */
230 * @brief Append a c-string.
232 * @param dst The destination string.
233 * @param src The source string.
234 * @param siz The size of the destination string.
235 * @return The length of the source string plus MIN(siz, strlen(initial dst))
237 * This function appends @p src to @p dst of size @p siz (unlike
238 * strncat, @p siz is the full size of @p dst, not space left). At
239 * most @p siz - 1 characters will be copied. Always NUL terminates
240 * (unless @p siz <= strlen(dst)). This function returns strlen(src) +
241 * MIN(siz, strlen(initial dst)). If the returned value is greater or
242 * equal than @p siz, truncation occurred.
245 eina_strlcat(char *dst, const char *src, size_t siz)
252 /* Find the end of dst and adjust bytes left but don't go past end */
253 while (n-- != 0 && *d != '\0')
259 return(dlen + strlen(s));
269 return(dlen + (s - src)); /* count does not include NUL */
273 * @brief Check if the given string has the given prefix.
275 * @param str The string to work with.
276 * @param prefix The prefix to check for.
277 * @return #EINA_TRUE if the string has the given prefix, #EINA_FALSE otherwise.
279 * This function returns #EINA_TRUE if @p str has the prefix
280 * @p prefix, #EINA_FALSE otherwise. If the length of @p prefix is
281 * greater than @p str, #EINA_FALSE is returned.
284 eina_str_has_prefix(const char *str, const char *prefix)
289 str_len = strlen(str);
290 prefix_len = eina_strlen_bounded(prefix, str_len);
291 if (prefix_len == (size_t)-1)
294 return (strncmp(str, prefix, prefix_len) == 0);
298 * @brief Check if the given string has the given suffix.
300 * @param str The string to work with.
301 * @param suffix The suffix to check for.
302 * @return #EINA_TRUE if the string has the given suffix, #EINA_FALSE otherwise.
304 * This function returns #EINA_TRUE if @p str has the suffix
305 * @p suffix, #EINA_FALSE otherwise. If the length of @p suffix is
306 * greater than @p str, #EINA_FALSE is returned.
309 * @param str the string to work with
310 * @param suffix the suffix to check for
311 * @return true if str has the given suffix
312 * @brief checks if the string has the given suffix
315 eina_str_has_suffix(const char *str, const char *suffix)
317 return eina_str_has_suffix_helper(str, suffix, strcmp);
321 * @brief Check if the given string has the given suffix.
323 * @param str The string to work with.
324 * @param ext The extension to check for.
325 * @return #EINA_TRUE if the string has the given extension, #EINA_FALSE otherwise.
327 * This function does the same like eina_str_has_suffix(), but with a
328 * case insensitive compare.
331 eina_str_has_extension(const char *str, const char *ext)
333 return eina_str_has_suffix_helper(str, ext, strcasecmp);
337 * @brief Split a string using a delimiter and returns number of elements.
339 * @param str The string to split.
340 * @param delim The string which specifies the places at which to split the string.
341 * @param max_tokens The maximum number of strings to split string into.
342 * @param elements Where to return the number of elements in returned
343 * array (not counting the terminating @c NULL). May be @c NULL.
344 * @return A newly-allocated NULL-terminated array of strings or NULL if it
345 * fails to allocate the array.
347 * This functin splits @p str into a maximum of @p max_tokens pieces,
348 * using the given delimiter @p delim. @p delim is not included in any
349 * of the resulting strings, unless @p max_tokens is reached. If
350 * @p max_tokens is less than @c 1, the string is splitted completely. If
351 * @p max_tokens is reached, the last string in the returned string
352 * array contains the remainder of string. The returned value is a
353 * newly allocated NULL-terminated array of strings or NULL if it fails to
354 * allocate the array. To free it, free the first element of the array and the
357 * @see eina_str_split()
360 eina_str_split_full(const char *str, const char *delim, int max_tokens, unsigned int *elements)
362 return eina_str_split_full_helper(str, delim, max_tokens, elements);
367 * @brief Split a string using a delimiter.
369 * @param str The string to split.
370 * @param delim The string which specifies the places at which to split the string.
371 * @param max_tokens The maximum number of strings to split string into.
372 * @return A newly-allocated NULL-terminated array of strings or NULL if it
373 * fails to allocate the array.
375 * This functin splits @p str into a maximum of @p max_tokens pieces,
376 * using the given delimiter @p delim. @p delim is not included in any
377 * of the resulting strings, unless @p max_tokens is reached. If
378 * @p max_tokens is less than @c 1, the string is splitted completely. If
379 * @p max_tokens is reached, the last string in the returned string
380 * array contains the remainder of string. The returned value is a
381 * newly allocated NULL-terminated array of strings or NULL if it fails to
382 * allocate the array. To free it, free the first element of the array and the
386 eina_str_split(const char *str, const char *delim, int max_tokens)
388 return eina_str_split_full_helper(str, delim, max_tokens, NULL);
392 * @brief Join two strings of known length.
394 * @param dst The buffer to store the result.
395 * @param size Size (in byte) of the buffer.
396 * @param sep The separator character to use.
397 * @param a First string to use, before @p sep.
398 * @param a_len length of @p a.
399 * @param b Second string to use, after @p sep.
400 * @param b_len length of @p b.
401 * @return The number of characters printed.
403 * This function joins the strings @p a and @p b (in that order) and
404 * separate them with @p sep. The result is stored in the buffer
405 * @p dst and at most @p size - 1 characters will be written and the
406 * string is NULL-terminated. @p a_len is the length of @p a (not
407 * including '\\0') and @p b_len is the length of @p b (not including
408 * '\\0'). This function returns the number of characters printed (not
409 * including the trailing '\\0' used to end output to strings). Just
410 * like snprintf(), it will not write more than @p size bytes, thus a
411 * returned value of @p size or more means that the output was
414 * @see eina_str_join()
415 * @see eina_str_join_static()
418 eina_str_join_len(char *dst, size_t size, char sep, const char *a, size_t a_len, const char *b, size_t b_len)
420 size_t ret = a_len + b_len + 1;
423 if (size < 1) return ret;
427 memcpy(dst, a, size - 1);
428 dst[size - 1] = '\0';
432 memcpy(dst, a, a_len);
437 dst[size - 1] = '\0';
444 if (size <= off + b_len + 1)
446 memcpy(dst + off, b, size - off - 1);
447 dst[size - 1] = '\0';
451 memcpy(dst + off, b, b_len);
452 dst[off + b_len] = '\0';
457 * @brief Use iconv to convert a text string from one encoding to another
459 * @param enc_from encoding to convert from
460 * @param enc_to encoding to convert to
461 * @param text text to convert
466 eina_str_convert(const char *enc_from, const char *enc_to, const char *text)
469 char *new_txt, *inp, *outp;
470 size_t inb, outb, outlen, tob, outalloc;
472 if (!text) return NULL;
473 ic = iconv_open(enc_to, enc_from);
474 if (ic == (iconv_t)(-1)) return NULL;
475 new_txt = malloc(64);
488 count = iconv(ic, &inp, &inb, &outp, &outb);
489 outlen += tob - outb;
490 if (count == (size_t)(-1))
494 new_txt = realloc(new_txt, outalloc + 64);
495 outp = new_txt + outlen;
499 else if (errno == EILSEQ)
501 if (new_txt) free(new_txt);
505 else if (errno == EINVAL)
507 if (new_txt) free(new_txt);
513 if (new_txt) free(new_txt);
520 if (outalloc == outlen) new_txt = realloc(new_txt, outalloc + 1);
530 eina_str_convert(const char *enc_from __UNUSED__, const char *enc_to __UNUSED__, const char *text __UNUSED__)
537 * @brief Put a \ before and Space( ), \ or ' in a string.
539 * @param str the string to escape
541 * A newly allocated string is returned.
544 eina_str_escape(const char *str)
549 s2 = malloc((strlen(str) * 2) + 1);
550 if (!s2) return NULL;
551 for (s = str, d = s2; *s != 0; s++, d++)
553 if ((*s == ' ') || (*s == '\\') || (*s == '\''))
565 * @brief Lowercase all the characters in range [A-Z] in the given string.
567 * @param str the string to lowercase
569 * This modifies the original string, changing all characters in [A-Z] to lowercase.
572 eina_str_tolower(char **str)
575 if ((!str) || (!(*str))) return;
577 for (p = *str; (*p); *p++)
578 if ((*p >= 'A') && (*p <= 'Z'))