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#include <stdlib.h>
#include <string.h>
#include <ctype.h>
char *strlwr(char *s)
{
unsigned char *p = (unsigned char *)s;
while (*p) {
*p = tolower((unsigned char)*p);
p++;
}
return s;
}
char *trim(char *s)
{
char *result = strdup(s);
char *end;
while(isspace((unsigned char)*result)) result++;
if(*result == 0)
return result;
end = result + strlen(result) - 1;
while(end > result && isspace((unsigned char)*end)) end--;
end[1] = '\0';
return result;
}
char *replaceStr(char *s, char *old, char *replace) {
char* result;
int i, cnt = 0;
size_t newSize = strlen(replace);
size_t oldSize = strlen(old);
for (i = 0; s[i] != '\0'; i++) {
if (strstr(&s[i], old) == &s[i]) {
cnt++;
i += oldSize - 1;
}
}
result = (char*)malloc(i + cnt * (newSize - oldSize) + 1);
i = 0;
while (*s) {
if (strstr(s, old) == s) {
strcpy(&result[i], replace);
i += newSize;
s += oldSize;
}
else
result[i++] = *s++;
}
result[i] = '\0';
return result;
};
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