curl_strequal(3) Introduction to Library Functions curl_strequal(3)

curl_strequal - compare two strings ignoring case

#include <curl/curl.h>
int curl_strequal(const char *str1, const char *str2);

The curl_strequal(3) function compares the two strings str1 and str2, ignoring the case of the characters. It returns a non-zero (TRUE) integer if the strings are identical.

This function uses plain ASCII based comparisons completely disregarding the locale - contrary to how strcasecmp and other system case insensitive string comparisons usually work.

This function is provided by libcurl to enable applications to compare strings in a truly portable manner. There are no standard portable case insensitive string comparison functions. This function works on all platforms.

This functionality affects all supported protocols

int main(int argc, char **argv)
{


  const char *name = "compare";


  if(curl_strequal(name, argv[1]))


    printf("Name and input matches\n");
}

Added in curl 7.1

Non-zero if the strings are identical. Zero if they are not.

curl_strnequal(3), strcasecmp(3), strcmp(3)

2025-05-02 libcurl