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basic getopt

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Frédéric Mangano 2013-01-01 17:25:34 +01:00
parent d4823b4489
commit c158a3ed78
1 changed files with 22 additions and 3 deletions
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25
opustags.c
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@ -1,4 +1,5 @@
#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -149,14 +150,30 @@ int write_page(ogg_page *og, FILE *stream){
}
int main(int argc, char **argv){
FILE *in = fopen(argv[1], "r");
const char *path_in, *path_out = NULL;
int c;
while((c = getopt(argc, argv, "o:")) != -1){
switch(c){
case 'o':
path_out = optarg;
break;
default:
return EXIT_FAILURE;
}
}
if(optind != argc - 1){
fputs("invalid arguments\n", stderr);
return EXIT_FAILURE;
}
path_in = argv[optind];
FILE *in = fopen(path_in, "r");
if(!in){
perror("fopen");
return EXIT_FAILURE;
}
FILE *out = NULL;
if(argc == 3){
out = fopen(argv[2], "w");
if(path_out != NULL){
out = fopen(path_out, "w");
if(!out){
perror("fopen");
fclose(in);
@ -239,6 +256,8 @@ int main(int argc, char **argv){
error = "ogg_stream_packetin: internal error";
free(packet.packet);
}
else
print_tags(&tags);
free_tags(&tags);
if(error)
break;