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/*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "general.h"
#include "gui.h"
int main(int argc, char **argv)
{
struct file file_one, file_two;
unsigned long largest_file_size;
char *message[] = {
"Arguments missing.\n",
"Usage:\n hexcompare file1 [file2]\n",
"Failed to open file \"%s\".\n"
};
/* Verify that we have enough input arguments. */
if (argc < 2) {
puts("hexcompare v" PVER "\n");
printf("%s%s", message[0], message[1]);
return 1;
}
/* Load in the file names. */
file_one.name = argv[1];
if (argc == 2) {
file_two.name = argv[1];
} else {
file_two.name = argv[2];
}
/* Open the files.
Present the user with an error message if they cannot be opened. */
if ((file_one.pointer = fopen(file_one.name, "rb")) == NULL) {
printf(message[2], file_one.name);
return 1;
}
if ((file_two.pointer = fopen(file_two.name, "rb")) == NULL) {
printf(message[2], file_two.name);
fclose(file_one.pointer);
return 1;
}
/* Get the file size */
fseek(file_one.pointer, 0, SEEK_END);
file_one.size = ftell(file_one.pointer);
fseek(file_two.pointer, 0, SEEK_END);
file_two.size = ftell(file_two.pointer);
/* Determine the largest file size */
largest_file_size = (file_one.size > file_two.size) ? file_one.size
: file_two.size;
/* Initiate the GUI display. */
start_gui(&file_one, &file_two, largest_file_size);
/* Close the files. */
fclose(file_one.pointer);
fclose(file_two.pointer);
/* Clean exit. */
return 0;
}
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