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105 lines
3.1 KiB
C
105 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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return data==NULL || *data=='\0';
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}
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bool string_is_equal(const char *a, const char *b)
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{
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if (!a || !b)
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return false;
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return (strcmp(a, b) == 0);
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}
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bool string_is_equal_noncase(const char *a, const char *b)
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{
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if (!a || !b)
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return false;
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return (strcasecmp(a, b) == 0);
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}
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char *string_to_upper(char *s)
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{
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char *cs = (char *)s;
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for ( ; *cs != '\0'; cs++)
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*cs = toupper(*cs);
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return s;
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}
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char *string_to_lower(char *s)
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{
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char *cs = (char *)s;
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for ( ; *cs != '\0'; cs++)
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*cs = tolower(*cs);
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return s;
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}
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char *string_replace_substring(const char *in,
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const char *pattern, const char *replacement)
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{
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size_t numhits, pattern_len, replacement_len, outlen;
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const char *inat;
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const char *inprev;
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char *out, *outat;
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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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numhits = 0;
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inat = in;
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while ((inat = strstr(inat, pattern)))
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{
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inat += pattern_len;
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numhits++;
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}
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outlen = strlen(in) - pattern_len*numhits + replacement_len*numhits;
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out = (char *)malloc(outlen+1);
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outat = out;
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inat = in;
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inprev = in;
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while ((inat = strstr(inat, pattern)))
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{
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memcpy(outat, inprev, inat-inprev);
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outat += inat-inprev;
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memcpy(outat, replacement, replacement_len);
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outat += replacement_len;
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inat += pattern_len;
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inprev = inat;
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}
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strcpy(outat, inprev);
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return out;
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}
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