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spool: support jobs with more than one file

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We could do this already, by piping from cat. But this way is cleaner.
This commit is contained in:
Werner Almesberger 2012-03-21 16:57:05 -03:00
parent 6c3bc3e58e
commit c422be5543
1 changed files with 46 additions and 26 deletions
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72
spool/spool.c
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@ -22,36 +22,11 @@
#define BUF_SIZE 8192
static void usage(const char *name)
static void spool_file(FILE *file)
{
fprintf(stderr, "usage: %s [file]\n", name);
exit(1);
}
int main(int argc, const char **argv)
{
FILE *file;
char buf[BUF_SIZE+1];
size_t n;
char *port;
switch (argc) {
case 1:
file = stdin;
break;
case 2:
file = fopen(argv[1], "r");
if (!file) {
perror(argv[1]);
exit(1);
}
break;
default:
usage(*argv);
}
port = getenv("PORT");
serial_open(port ? port : DEFAULT_PORT);
while (1) {
n = fread(buf, 1, BUF_SIZE, file);
if (!n)
@ -59,6 +34,51 @@ int main(int argc, const char **argv)
buf[n] = 0;
serial_printf("%s", buf);
}
}
static void usage(const char *name)
{
fprintf(stderr, "usage: %s [file ...]\n", name);
exit(1);
}
int main(int argc, const char **argv)
{
FILE **files;
char *port;
int n_files, i;
/*
* Open all files before starting to spool, so that we don't risk
* failing in the middle of the job.
*/
n_files = argc == 1 ? 1 : argc-1;
files = malloc(sizeof(FILE *));
if (!files) {
perror("malloc");
exit(1);
}
if (argc == 1) {
*files = stdin;
} else {
if (*argv[1] == '-')
usage(*argv);
for (i = 0; i != n_files; i++) {
files[i] = fopen(argv[i+1], "r");
if (!files[i]) {
perror(argv[i+1]);
exit(1);
}
}
}
port = getenv("PORT");
serial_open(port ? port : DEFAULT_PORT);
for (i = 0; i != n_files; i++)
spool_file(files[i]);
sleep(3600);
serial_close();
return 0;