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96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/* Copyright (C) 2010-2015 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (stdstring.c).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <ctype.h>
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#include <string/stdstring.h>
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bool string_is_empty(const char *data)
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{
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char **str = NULL;
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if (!data)
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return true;
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str = (char**)&data;
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if (**str == '\0')
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return true;
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return false;
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}
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char *string_to_upper(char *s)
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{
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unsigned char *ucs = (unsigned char *)s;
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for ( ; *ucs != '\0'; ucs++)
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*ucs = toupper(*ucs);
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return s;
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}
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char *string_replace_substring(const char *in, const char *pattern, const char *replacement)
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{
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char *needle = NULL;
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char *newstr = NULL;
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char *head = NULL;
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size_t pattern_len = 0;
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size_t replacement_len = 0;
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/* if either pattern or replacement is NULL,
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* duplicate in and let caller handle it. */
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if (!pattern || !replacement)
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return strdup(in);
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pattern_len = strlen(pattern);
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replacement_len = strlen(replacement);
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newstr = strdup(in);
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head = newstr;
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while ((needle = strstr(head, pattern)))
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{
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char *oldstr = newstr;
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size_t oldstr_len = strlen(oldstr);
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newstr = (char*)malloc(oldstr_len - pattern_len + replacement_len + 1);
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if (!newstr)
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{
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/* Failed to allocate memory,
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* free old string and return NULL. */
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free(oldstr);
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return NULL;
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}
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memcpy(newstr, oldstr, needle - oldstr);
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memcpy(newstr + (needle - oldstr), replacement, replacement_len);
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memcpy(newstr + (needle - oldstr) + replacement_len,
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needle + pattern_len,
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oldstr_len - pattern_len - (needle - oldstr));
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newstr[oldstr_len - pattern_len + replacement_len] = '\0';
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/* Move back head right after the last replacement. */
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head = newstr + (needle - oldstr) + replacement_len;
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free(oldstr);
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}
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return newstr;
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}
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