117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
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#include <stdio.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <malloc.h>
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#include <stdlib.h>
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#define DATA_NUM_PER_ROW 16
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void print_binary(FILE *fp, uint32_t n)
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{
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uint8_t arr[32] = {0};
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int len = 0;
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for(len = 0; len < 32; len++){
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arr[len] = (n&1)+'0';
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n = n>>1;
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}
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len--;
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while (len >= 0 ){
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fprintf(fp,"%c", arr[len]);
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len--;
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}
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fprintf(fp,"\n");
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}
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int main( int argc, char *argv[] )
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{
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char buf[128];
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FILE *fin = NULL, *fout = NULL;
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int i = 0;
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uint8_t val;
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off_t filesize, offset;
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uint32_t data_counter = 0;
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uint8_t fill_zero_num = 0;
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printf("argc:%d, ", argc);
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for (uint8_t i = 0; i < argc; i++) {
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printf("argv[%d]:%s, ", i, argv[i]);
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}
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printf("\n");
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if( ( fin = fopen( argv[1], "rb+" ) ) == NULL ){
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printf("fopen(%s,r) failed\n", argv[1] );
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goto exit;
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}
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if( ( fout = fopen( argv[2], "w+" ) ) == NULL ){
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printf("fopen(%s,w+) failed\n", argv[2] );
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goto exit;
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}
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if( argc > 3){
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filesize = atoi(argv[3]);
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} else{
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if( ( filesize = lseek( fileno( fin ), 0, SEEK_END ) ) < 0 ){
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perror( "lseek" );
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goto exit;
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}
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}
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// //4-byte alignment, fill in zeros if not enough
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// fill_zero_num = filesize % 4;
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// if (fill_zero_num != 0) {
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// if (fseek(fin, 0, SEEK_END) < 0) {
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// printf( "fseek(0,SEEK_END) failed\n" );
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// goto exit;
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// }
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// char temp = 0;
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// if (fwrite(&temp, 1, fill_zero_num, fin) != fill_zero_num) {
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// printf("fwrite(0,%d) failed\n", fill_zero_num);
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// goto exit;
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// }
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// filesize++;
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// }
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if( fseek( fin, 0, SEEK_SET ) < 0 ){
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printf( "fseek(0,SEEK_SET) failed\n" );
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goto exit;
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}
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memset(buf, 0x0,128);
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for( offset = 0; offset < filesize; offset += 1 ){
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if( fread( buf, 1, 4, fin ) != (size_t) 4 ){
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goto exit;
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}
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for(i = 0; i < 4; i++){
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// val = buf[3-i];
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val = buf[i];
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printf("0x%02x", val);
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fprintf(fout, "0x%02x", val);
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data_counter++;
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if (data_counter == filesize) {
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break;
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}
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if (data_counter % DATA_NUM_PER_ROW != 0) {
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printf(", ");
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fprintf(fout, ", ");
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} else {
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printf(",\n");
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fprintf(fout, ",\n");
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}
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}
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}
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exit:
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if(fin){
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fclose(fin);
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}
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if(fout){
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fclose(fout);
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}
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return 0;
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}
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