berdav/snappy-fox
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Options and flags

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This commit is contained in:
Davide Berardi 2024-02-19 09:49:03 +01:00
parent c3aaada8ac
commit 97b4cf9711
1 changed files with 42 additions and 4 deletions
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46
snappy-fox.c
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@ -23,6 +23,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#define MAX_COMPRESSED_DATA_SIZE 16777211
#define MAX_UNCOMPRESSED_DATA_SIZE 65536
@ -37,6 +38,10 @@
#define prbanner(f...) fprintf(stderr, f)
#define prerror(f...) fprintf(stderr, "[ ERROR ]"), fprintf(stderr, f)
#ifndef VERSION
#define VERSION "unknown"
#endif
/* Logarithm base two of the number */
static uint32_t log2_32(uint32_t n) {
int32_t i = 0;
@ -430,18 +435,51 @@ static int snappy_decompress_frame(FILE *in, FILE *out) {
return ret;
}
static void version(const char *progname) {
fprintf(stderr, "%s Version: %s\n", progname, VERSION);
}
static void usage(const char *progname) {
fprintf(stderr, "Usage %s <input file> <output file>\n", progname);
fprintf(stderr, "Usage %s [options] <input file> <output file>\n",
progname);
fprintf(stderr, " files can be specified as - for stdin or stdout\n");
fprintf(stderr, " Options:\n");
fprintf(stderr, " -h --help This Help\n");
fprintf(stderr, " -v --version Print Version and exit\n");
}
int main(int argc, char **argv) {
int c;
int ret = 0;
FILE *in, *out;
int option_idx = 0;
static struct option flags[] = {
{"version", no_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
while (c != -1) {
c = getopt_long(argc, argv, "hv", flags, &option_idx);
switch (c) {
case 'h':
usage(argv[0]);
return 0;
case 'v':
version(argv[0]);
return 0;
default:
prerror("Unknown Option: %c\n", c);
continue;
case -1:
break;
}
}
prdebug("Starting snappyturtle\n");
if (argc < 3) {
if (option_idx + argc < 3) {
usage(argv[0]);
return 1;
}
@ -449,14 +487,14 @@ int main(int argc, char **argv) {
#ifdef __AFL_LOOP
while (__AFL_LOOP(1000)) {
#endif
in = open_read_file(argv[1]);
in = open_read_file(argv[option_idx+1]);
if (in == NULL) {
perror("fopen");
ret = 1;
goto exit_point;
}
out = open_write_file(argv[2]);
out = open_write_file(argv[option_idx+2]);
if (out == NULL) {
perror("fopen");
ret = 1;