118 lines
2.3 KiB
C
118 lines
2.3 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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#include <ctype.h>
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#define strtoul(cp, endp, base) simple_strtoul(cp, endp, base)
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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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unsigned long simple_strtoul(const char *cp, char **endp,
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unsigned int base)
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{
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unsigned long result = 0;
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unsigned long value;
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if (*cp == '0') {
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cp++;
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if ((*cp == 'x') && isxdigit(cp[1])) {
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base = 16;
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cp++;
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}
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if (!base)
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base = 8;
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}
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if (!base)
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base = 10;
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while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
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? toupper(*cp) : *cp)-'A'+10) < base) {
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result = result*base + value;
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cp++;
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}
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if (endp)
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*endp = (char *)cp;
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return result;
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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 tmp = 0;
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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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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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while(1) {
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memset(buf, 0x0, 128);
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char *st = fgets(buf,128, fin);
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char **endp = NULL;
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if (st == NULL) {
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break;
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}
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tmp = strtoul(buf, endp, 16);
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//printf("%s:%08x\n", buf, tmp);
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//fprintf(fout, "%08x\n", tmp);
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print_binary(fout, tmp);
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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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}
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