83 lines
1.5 KiB
C
83 lines
1.5 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char *argv[]) {
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FILE *fp;
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unsigned int sz, len, ptr;
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char *buffer;
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char type;
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char tmp_char;
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int tmp_int;
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char *tmp_string;
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if(argc != 2) {
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fprintf(stderr, "Usage: %s <inputfile>\n", argv[0]);
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return 1;
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}
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fp = fopen(argv[1], "r");
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if(!fp) {
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fprintf(stderr, "Failed to open '%s'\n", argv[1]);
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return 1;
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}
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fseek(fp, 0, SEEK_END);
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sz = ftell(fp);
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fseek(fp, 0, SEEK_SET);
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buffer = malloc(sz);
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if(!buffer) {
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fprintf(stderr, "Failed to allocate %d bytes of memory\n", sz);
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return 1;
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}
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fread(buffer, sizeof(char), sz, fp);
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ptr = 0;
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while(ptr < sz) {
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type = buffer[ptr++];
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switch(type) {
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case '\x01': // integer
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tmp_int = *(int *)(buffer + ptr);
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ptr += sizeof(int);
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printf("i: 0x%08x\n", tmp_int);
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break;
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case '\x02': // char
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tmp_char = buffer[ptr++];
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printf("c: 0x%02x\n", (unsigned char)tmp_char);
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break;
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case '\x03': // string
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len = *(int *)(buffer + ptr);
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ptr += sizeof(int);
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tmp_string = malloc(len);
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if(!tmp_string) {
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fprintf(stderr, "Failed to allocate %d bytes of memory\n", len);
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return 1;
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}
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strcpy(tmp_string, (buffer + ptr));
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printf("s: %s\n", tmp_string);
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ptr += len;
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break;
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case '\x04': // comment
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printf("#: %s\n", (buffer + ptr));
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while(*(buffer + ptr++) != '\x00');
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break;
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case '\xff': // END
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return 0;
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default:
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fprintf(stderr, "Unknown data type '%c'\n", type);
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}
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}
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}
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