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/* Copyright (C) 2010-2016 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (stdstring.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdint.h>
#include <ctype.h>
#include <string/stdstring.h>
bool string_is_empty(const char *data)
{
return data==NULL || *data=='\0';
}
bool string_is_equal(const char *a, const char *b)
{
if (!a || !b)
return false;
return (strcmp(a, b) == 0);
}
bool string_is_equal_noncase(const char *a, const char *b)
{
if (!a || !b)
return false;
return (strcasecmp(a, b) == 0);
}
char *string_to_upper(char *s)
{
char *cs = (char *)s;
for ( ; *cs != '\0'; cs++)
*cs = toupper(*cs);
return s;
}
char *string_to_lower(char *s)
{
char *cs = (char *)s;
for ( ; *cs != '\0'; cs++)
*cs = tolower(*cs);
return s;
}
char *string_ucwords(char *s)
{
char *cs = (char *)s;
for ( ; *cs != '\0'; cs++)
{
if (*cs == ' ')
{
*(cs+1) = toupper(*(cs+1));
}
}
s[0] = toupper(s[0]);
return s;
}
char *string_replace_substring(const char *in,
const char *pattern, const char *replacement)
{
size_t numhits, pattern_len, replacement_len, outlen;
const char *inat;
const char *inprev;
char *out, *outat;
/* if either pattern or replacement is NULL,
* duplicate in and let caller handle it. */
if (!pattern || !replacement)
return strdup(in);
pattern_len = strlen(pattern);
replacement_len = strlen(replacement);
numhits = 0;
inat = in;
while ((inat = strstr(inat, pattern)))
{
inat += pattern_len;
numhits++;
}
outlen = strlen(in) - pattern_len*numhits + replacement_len*numhits;
out = (char *)malloc(outlen+1);
outat = out;
inat = in;
inprev = in;
while ((inat = strstr(inat, pattern)))
{
memcpy(outat, inprev, inat-inprev);
outat += inat-inprev;
memcpy(outat, replacement, replacement_len);
outat += replacement_len;
inat += pattern_len;
inprev = inat;
}
strcpy(outat, inprev);
return out;
}
/* Non-GPL licensed versions of whitespace trimming:
* http://stackoverflow.com/questions/656542/trim-a-string-in-c
*/
/* Remove leading whitespaces */
char *string_trim_whitespace_left(char *const s)
{
if(s && *s)
{
size_t len = strlen(s);
char *cur = s;
while(*cur && isspace(*cur))
++cur, --len;
if(s != cur)
memmove(s, cur, len + 1);
}
return s;
}
/* Remove trailing whitespaces */
char *string_trim_whitespace_right(char *const s)
{
if(s && *s)
{
size_t len = strlen(s);
char *cur = s + len - 1;
while(cur != s && isspace(*cur))
--cur, --len;
cur[isspace(*cur) ? 0 : 1] = '\0';
}
return s;
}
/* Remove leading and trailing whitespaces */
char *string_trim_whitespace(char *const s)
{
string_trim_whitespace_right(s); /* order matters */
string_trim_whitespace_left(s);
return s;
}
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