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#include "../git-compat-util.h"
 
int gitsetenv(const char *name, const char *value, int replace)
{
	int out;
	size_t namelen, valuelen;
	char *envstr;
 
	if (!name || !value) return -1;
	if (!replace) {
		char *oldval = NULL;
		oldval = getenv(name);
		if (oldval) return 0;
	}
 
	namelen = strlen(name);
	valuelen = strlen(value);
	envstr = malloc((namelen + valuelen + 2));
	if (!envstr) return -1;
 
	memcpy(envstr, name, namelen);
	envstr[namelen] = '=';
	memcpy(envstr + namelen + 1, value, valuelen);
	envstr[namelen + valuelen + 1] = 0;
 
	out = putenv(envstr);
	/* putenv(3) makes the argument string part of the environment,
	 * and changing that string modifies the environment --- which
	 * means we do not own that storage anymore.  Do not free
	 * envstr.
	 */
 
	return out;
}