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/* extstring.c
* SPDX-License-Identifier: BSD-3-Clause
*/
#define USE_SECURE_MEM
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "extlib.h"
char *
strlwr (char *s)
{
unsigned char *p = (unsigned char *) s;
while (*p)
{
*p = tolower ((unsigned char) *p);
p++;
}
return s;
}
char *
strupr (char *s)
{
unsigned char *p = (unsigned char *) s;
while (*p)
{
*p = toupper ((unsigned char) *p);
p++;
}
return s;
}
char *
trim (char *s, int *rem_front, int *rem_back)
{
char *result = strdup (s);
char *end;
while (isspace ((unsigned char) *result))
{
result++;
if (rem_front)
*rem_front += 1;
}
if (*result == 0)
return result;
end = result + strlen (result) - 1;
while (end > result && isspace ((unsigned char) *end))
{
end--;
if (rem_back)
*rem_back += 1;
}
end[1] = '\0';
return result;
}
char *
replace_str (char *s, char *old, char *replace)
{
char *result;
int i, cnt = 0;
size_t new_size = strlen (replace);
size_t old_size = strlen (old);
for (i = 0; s[i] != '\0'; i++)
{
if (strstr (&s[i], old) == &s[i])
{
cnt++;
i += old_size - 1;
}
}
result = (char *) malloc (i + cnt * (new_size - old_size) + 1);
i = 0;
while (*s)
{
if (strstr (s, old) == s)
{
strcpy (&result[i], replace);
i += new_size;
s += old_size;
}
else
result[i++] = *s++;
}
result[i] = '\0';
return result;
};
char *
join_str (char **s, size_t len, char delim)
{
char *ret = strdup (s[0]);
size_t ret_len = sizeof (char) * len + strlen (ret);
for (int i = 1; i < len; i++)
{
char *ret_tmp = realloc (ret, ret_len + strlen (s[i]) + 1);
ret_len += strlen (s[i]) + 1;
if (ret_tmp != NULL)
ret = ret_tmp;
sprintf (ret, "%s%c%s", ret, delim, s[i]);
}
return ret;
}
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