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48434c859d
The "gencat" with older rights to the name is from libc, no less. I wonder how I missed that :-(
71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
/*
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* run.c - Run helper scripts
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*
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* Copyright 2012 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#define _GNU_SOURCE /* for vasprintf */
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "run.h"
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void run_cmd(const char *fmt, ...)
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{
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va_list ap;
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char *tmp;
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int res;
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va_start(ap, fmt);
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if (vasprintf(&tmp, fmt, ap) < 0) {
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perror("vasprintf");
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exit(1);
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}
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res = system(tmp);
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if (res < 0) {
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perror("system");
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exit(1);
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}
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if (res) {
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fprintf(stderr, "\"%s\" returned %d\n", tmp, res);
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exit(1);
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}
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}
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void cat(FILE *out, const char *name)
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{
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FILE *in;
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char buf[10000]; /* pick any good size */
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size_t got, wrote;
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in = fopen(name, "r");
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if (!in) {
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perror(name);
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exit(1);
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}
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while (1) {
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got = fread(buf, 1, sizeof(buf), in);
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if (!got)
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break;
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wrote = fwrite(buf, 1, got, out);
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if (wrote != got) {
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perror("fwrite");
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exit(1);
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}
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}
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if (ferror(in)) {
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perror(name);
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exit(1);
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}
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fclose(in);
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}
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