105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <sys/stat.h>
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/*
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TODO
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Usage:
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kpack [--nologo / -n] [--kernel / -k] [--unpack / -u] <infile> [<outfile>]
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*/
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static const char* str_usage = "Usage: %s [--nologo / -n] [--kernel / -k] [--unpack / -u] <infile> [<outfile>]\n";
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int main(int argc, char *argv[])
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{
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bool nologo = false;
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bool kernel = false;
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bool unpack = false;
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char *infile = NULL;
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char *outfile = NULL;
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int opt;
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static struct option long_options[] = {
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{"nologo", no_argument, NULL, 'n'},
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{"kernel", no_argument, NULL, 'k'},
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{"unpack", no_argument, NULL, 'u'},
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{0, 0, 0, 0} // must be zeros here
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};
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while ((opt = getopt_long(argc, argv, "nku", long_options, NULL)) != -1) {
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switch (opt) {
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case 'n':
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nologo = true;
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break;
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case 'k':
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kernel = true;
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break;
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case 'u':
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unpack = true;
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break;
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default: // '?'
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fprintf(stderr, str_usage, argv[0]);
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return 1;
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}
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}
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// Check for required infile
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if (optind >= argc) {
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printf("Error: Input file is required.\n");
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printf(str_usage, argv[0]);
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return 1;
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}
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infile = argv[optind];
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// Optional outfile
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if (optind + 1 < argc) {
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outfile = argv[optind + 1];
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optind++;
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}
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// printf("argc = %d, optind = %d\n", argc - 1, optind);
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if (argc - 1 > optind) {
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printf("Error: too many arguments\n");
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printf(str_usage, argv[0]);
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return 1;
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}
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// for debug: print parsed options and args
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printf("nologo: %s\n", nologo ? "true" : "false");
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printf("kernel: %s\n", kernel ? "true" : "false");
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printf("unpack: %s\n", unpack ? "true" : "false");
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printf("infile: %s\n", infile);
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printf("outfile: %s\n", outfile ? outfile : "Not specified");
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printf("\n");
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if (!nologo) {
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printf("KPackC - Kolibri Packer in C\nUses LZMA v4.32 compression library\n\n");
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}
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struct stat64 statbuf;
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int res_stat = stat64(infile, &statbuf);
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if (res_stat == -1) {
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printf("Error: cannot load input file\n");
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return 1;
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}
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// printf("statbuf.st_size = %lld\n", statbuf.st_size);
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if (statbuf.st_size == 0 || statbuf.st_size >= 4294967296LL) {
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printf("Error: input file must be non zero and less than 4G\n");
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return 1;
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}
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unsigned infile_size = (unsigned int)statbuf.st_size;
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printf("infile_size = %u\n", infile_size);
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FILE *infile_handle = fopen(infile, "rb");
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if (!infile_handle) {
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printf("Error: cannot load input file\n");
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return 1;
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}
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return 0;
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} |