slstatus/components/cat.c

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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <string.h>
#include "../slstatus.h"
#include "../util.h"
const char *
cat(const char *path)
{
char *f;
FILE *fp;
if (!(fp = fopen(path, "r"))) {
warn("fopen '%s':", path);
return NULL;
}
f = fgets(buf, sizeof(buf) - 1, fp);
if (fclose(fp) < 0) {
warn("fclose '%s':", path);
return NULL;
}
if (!f)
return NULL;
if ((f = strrchr(buf, '\n')))
f[0] = '\0';
return buf[0] ? buf : NULL;
}