diskbuilder/main.cpp at master · includeos/diskbuilder · GitHub

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#define_XOPEN_SOURCE1
#define_XOPEN_SOURCE_EXTENDED1
#define_GNU_SOURCE1

#include<cstdio>
#include<getopt.h>
#include<stdlib.h>
#include<unistd.h>

#include"filetree.hpp"
FileSys fsys;

#defineNO_ARGUMENT0
#defineREQ_ARGUMENT1

voidprint_usage(char* const argv[])
{
fprintf(stderr,
"Creates a minimal read-only FAT file image from given source folder\n"
"Usage:\n"
"\t%s -v -o file [source folder]\n"
"Options:\n"
"\t-v\t\tVerbose output\n"
"\t-o <file>\tPlace the output into <file>\n"
"\n"
"Note: Source folder defaults to the current directory\n"
 , argv[0]);
}

intmain(int argc, char** argv)
{
// put current directory in buffer used for default gathering folder
char pwd_buffer[256];
getcwd(pwd_buffer, sizeof(pwd_buffer));

/// input folder
 std::string input_folder(pwd_buffer);
/// output file
 std::string output_file;

bool verbose = false;
while (1)
 {
int opt = getopt(argc, argv, "vo:");
if (opt == -1) break;

switch (opt) {
case'v':
 verbose = true;
break;

case'o':
 output_file = std::string(optarg);
break;

default:
//printf("Invalid option: %c\n", optopt);
print_usage(argv);
exit(EXIT_FAILURE);
 }
 }

// remaining arguments (non-options)
if (optind < argc)
 {
 input_folder = std::string(argv[optind]);
if (verbose) {
printf("Creating filesystem from: %s\n", input_folder.c_str());
 }
 }

if (input_folder.empty() || output_file.empty())
 {
print_usage(argv);
returnEXIT_FAILURE;
 }

FILE* file = fopen(output_file.c_str(), "wb");
int res = chdir(input_folder.c_str());
if (res < 0)
 {
fprintf(stderr, "Disk builder failed to enter folder '%s'!\n",
 input_folder.c_str());
fprintf(stderr, "Make corrections and try again\n");
exit(1);
 }
// walk filesystem subtree
 fsys.gather();

// print filesystem contents recursively
if (verbose)
 fsys.print();

// write to disk image file
long total = fsys.write(file);
if (verbose) {
printf("Written %ld bytes to %s\n", total, output_file.c_str());
 }
fclose(file);

returnEXIT_SUCCESS;
}