curl_getenv(3) Library Functions Manual curl_getenv(3)
NAME
curl_getenv - return value for environment name
SYNOPSIS
#include <curl/curl.h>
char *curl_getenv(const char *name);
DESCRIPTION
curl_getenv() is a portable wrapper for the getenv() function, meant to
emulate its behavior and provide an identical interface for all
operating systems libcurl builds on (including Windows).
You must curl_free(3) the returned string when you are done with it.
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
int main(void)
{
char *width = curl_getenv("COLUMNS");
if(width) {
/* it was set */
curl_free(width);
}
}
AVAILABILITY
Added in curl 7.1
RETURN VALUE
A pointer to a null-terminated string or NULL if it failed to find the
specified name.
NOTE
Under Unix operating systems, there is no point in returning an
allocated memory, although other systems does not work properly if this
is not done. The Unix implementation thus suffers slightly from the
drawbacks of other systems.
SEE ALSO
getenv(3C)
libcurl 2024-12-12 curl_getenv(3)
curl 8.11.1 - Generated Sat Dec 14 18:45:43 CST 2024