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/* See LICENSE file for copyright and license details. */
#include "common.h"
/**
* Prints an error to stderr in a `perror` fashion
*
* @param name The text to add at the beginning
* @param value The error code, may be an `errno` value
*/
void
libgamma_perror(const char *name, int error_code)
{
const char *desc, *gname;
char buf[1024];
long int gid;
desc = libgamma_strerror_r(error_code, buf, sizeof(buf));
if (error_code == LIBGAMMA_DEVICE_REQUIRE_GROUP) {
gid = (intmax_t)libgamma_group_gid_get();
if (!gid)
goto fallback;
gname = libgamma_group_name_get();
if (!gname) {
if (name && *name)
fprintf(stderr, "%s: %s in group %ji\n", name, desc, gid);
else
fprintf(stderr, "%s in group %ji\n", desc, gid);
} else {
if (name && *name)
fprintf(stderr, "%s: %s in the %s group (%ji)\n", name, desc, gname, gid);
else
fprintf(stderr, "%s in the %s group (%ji)\n", desc, gname, gid);
}
} else {
fallback:
if (name && *name)
fprintf(stderr, "%s: %s\n", name, desc);
else
fprintf(stderr, "%s\n", desc);
}
}
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