50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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#include <stddef.h>
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#include "iso9660.h"
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#include "util.h"
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#include "text.h"
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iso_9660_volume_descriptor_t * root = NULL;
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iso_9660_directory_entry_t * dir_entry = NULL;
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static char * dir_entries = NULL;
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int navigate(char * name) {
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dir_entry = (iso_9660_directory_entry_t*)&root->root;
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dir_entries = (char*)(DATA_LOAD_BASE + dir_entry->extent_start_LSB * ISO_SECTOR_SIZE);
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long offset = 0;
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while (1) {
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iso_9660_directory_entry_t * dir = (iso_9660_directory_entry_t *)(dir_entries + offset);
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if (dir->length == 0) {
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if (offset < dir_entry->extent_length_LSB) {
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offset += 1; // this->block_size - ((uintptr_t)offset % this->block_size);
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goto try_again;
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}
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break;
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}
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if (!(dir->flags & FLAG_HIDDEN)) {
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char file_name[dir->name_len + 1];
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memcpy(file_name, dir->name, dir->name_len);
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file_name[dir->name_len] = 0;
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char * s = strchr(file_name,';');
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if (s) {
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*s = '\0';
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}
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#if 1
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print("Found a file: ");
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print(" Name: ");
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print(file_name); print("\n");
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#endif
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if (!strcmp(file_name, name)) {
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dir_entry = dir;
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return 1;
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}
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}
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offset += dir->length;
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try_again:
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if ((long)(offset) > dir_entry->extent_length_LSB) break;
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}
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return 0;
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}
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