mirror of
https://github.com/cc65/cc65.git
synced 2024-09-06 18:54:30 +00:00
- VLIR support - support to "unCONVERT" - nicer UI git-svn-id: svn://svn.cc65.org/cc65/trunk@5418 b7a2c559-68d2-44c3-8de9-860c34a00d81
220 lines
6.0 KiB
C
220 lines
6.0 KiB
C
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <dirent.h>
|
|
#include <dio.h>
|
|
|
|
dhandle_t dhandle;
|
|
|
|
struct dir_entry_t {
|
|
struct {
|
|
unsigned name_length :4;
|
|
unsigned storage_type :4;
|
|
} storage_length;
|
|
char file_name[15];
|
|
unsigned char file_type;
|
|
unsigned key_pointer;
|
|
unsigned blocks_used;
|
|
unsigned char size[3];
|
|
unsigned long creation;
|
|
unsigned char version;
|
|
unsigned char min_version;
|
|
unsigned char access;
|
|
unsigned aux_type;
|
|
unsigned long last_mod;
|
|
unsigned header_pointer;
|
|
}* dir_entry;
|
|
|
|
union {
|
|
unsigned char bytes[512];
|
|
struct {
|
|
unsigned prev_block;
|
|
unsigned next_block;
|
|
unsigned char entries[1];
|
|
} content;
|
|
} dir_block;
|
|
|
|
union {
|
|
unsigned char bytes[512];
|
|
struct {
|
|
unsigned char addr_lo[254];
|
|
unsigned char size_lo[2];
|
|
unsigned char addr_hi[254];
|
|
unsigned char size_hi[2];
|
|
} content;
|
|
} index_block;
|
|
|
|
union {
|
|
unsigned char bytes[512];
|
|
struct {
|
|
unsigned char info_block[256];
|
|
unsigned char vlir_records[128];
|
|
struct dir_entry_t dir_entry;
|
|
} content;
|
|
} header_block;
|
|
|
|
|
|
static void err_exit(char *operation)
|
|
{
|
|
fprintf(stderr, "%s - err:%02x - %s",
|
|
operation, (int)_oserror, _stroserror(_oserror));
|
|
getchar();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
static unsigned get_dir_entry(char* p_name)
|
|
{
|
|
char* d_name;
|
|
char* f_name;
|
|
size_t f_namelen;
|
|
DIR* dir;
|
|
struct dirent* dirent;
|
|
unsigned cur_addr;
|
|
unsigned char entry_length;
|
|
unsigned char entries_per_block;
|
|
unsigned char cur_entry;
|
|
|
|
/* Split path name into directory name and file name */
|
|
f_name = strrchr(p_name, '/');
|
|
if (f_name) {
|
|
d_name = p_name;
|
|
*f_name++ = '\0';
|
|
} else {
|
|
d_name = ".";
|
|
f_name = p_name;
|
|
}
|
|
f_namelen = strlen(f_name);
|
|
|
|
/* Start with high level functions to get handling
|
|
of relative path and current drive for free */
|
|
dir = opendir(d_name);
|
|
if (!dir) {
|
|
err_exit("opendir");
|
|
}
|
|
dirent = readdir(dir);
|
|
if (!dirent) {
|
|
err_exit("readdir");
|
|
}
|
|
|
|
/* Field header_pointer directly follows field last_mod */
|
|
cur_addr = *(unsigned*)(&dirent->d_mtime.hour + 1);
|
|
|
|
/* DEV_NUM is set to the drive accessed above */
|
|
dhandle = dio_open(*(driveid_t*)0xBF30);
|
|
if (!dhandle) {
|
|
err_exit("dio_open");
|
|
}
|
|
|
|
if (dio_read(dhandle, cur_addr, &dir_block)) {
|
|
err_exit("dio_read.1");
|
|
}
|
|
|
|
/* Get directory entry infos from directory header */
|
|
entry_length = dir_block.bytes[0x23];
|
|
entries_per_block = dir_block.bytes[0x24];
|
|
|
|
/* Skip directory header entry */
|
|
cur_entry = 1;
|
|
|
|
do {
|
|
|
|
/* Search for next active directory entry */
|
|
do {
|
|
|
|
/* Check if next directory block is necessary */
|
|
if (cur_entry == entries_per_block) {
|
|
|
|
/* Check if another directory block is present */
|
|
cur_addr = dir_block.content.next_block;
|
|
if (!cur_addr) {
|
|
_mappederrno(0x46);
|
|
err_exit("dio_read.2");
|
|
}
|
|
|
|
/* Read next directory block */
|
|
if (dio_read(dhandle, cur_addr, &dir_block)) {
|
|
err_exit("dio_read.3");
|
|
}
|
|
|
|
/* Start with first entry in next block */
|
|
cur_entry = 0;
|
|
}
|
|
|
|
/* Compute pointer to current entry */
|
|
dir_entry = (struct dir_entry_t*)(dir_block.content.entries +
|
|
cur_entry * entry_length);
|
|
|
|
/* Switch to next entry */
|
|
++cur_entry;
|
|
} while (!dir_entry->storage_length.storage_type);
|
|
|
|
} while (dir_entry->storage_length.name_length != f_namelen ||
|
|
strncasecmp(dir_entry->file_name, f_name, f_namelen));
|
|
|
|
return cur_addr;
|
|
}
|
|
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
char input[80];
|
|
char* p_name;
|
|
unsigned dir_addr;
|
|
unsigned header_addr;
|
|
|
|
if (argc > 1) {
|
|
p_name = argv[1];
|
|
} else {
|
|
printf("Apple GEOS Convert\nPathname:");
|
|
p_name = gets(input);
|
|
}
|
|
|
|
dir_addr = get_dir_entry(p_name);
|
|
|
|
if (dio_read(dhandle, dir_entry->key_pointer, &index_block)) {
|
|
err_exit("dio_read.4");
|
|
}
|
|
|
|
header_addr = index_block.content.addr_lo[0] |
|
|
index_block.content.addr_hi[0] << 8;
|
|
|
|
if (dio_read(dhandle, header_addr, &header_block)) {
|
|
err_exit("dio_read.5");
|
|
}
|
|
|
|
dir_entry->storage_length = header_block.content.dir_entry.storage_length;
|
|
memcpy(dir_entry->file_name, header_block.content.dir_entry.file_name, 15);
|
|
dir_entry->file_type = header_block.content.dir_entry.file_type;
|
|
memcpy(dir_entry->size, header_block.content.dir_entry.size, 3);
|
|
dir_entry->creation = header_block.content.dir_entry.creation;
|
|
dir_entry->version = header_block.content.dir_entry.version;
|
|
dir_entry->min_version = header_block.content.dir_entry.min_version;
|
|
dir_entry->aux_type = header_addr;
|
|
dir_entry->last_mod = header_block.content.dir_entry.last_mod;
|
|
|
|
memmove(&index_block.content.addr_lo[0],
|
|
&index_block.content.addr_lo[1], sizeof(index_block.content.addr_lo) - 1);
|
|
memmove(&index_block.content.addr_hi[0],
|
|
&index_block.content.addr_hi[1], sizeof(index_block.content.addr_hi) - 1);
|
|
|
|
index_block.content.size_lo[1] = dir_entry->size[0];
|
|
index_block.content.size_hi[1] = dir_entry->size[1];
|
|
index_block.content.size_lo[0] = dir_entry->size[2];
|
|
index_block.content.size_hi[0] = 0;
|
|
|
|
if (dio_write(dhandle, dir_addr, &dir_block)) {
|
|
err_exit("dio_write.1");
|
|
}
|
|
|
|
if (dio_write(dhandle, dir_entry->key_pointer, &index_block)) {
|
|
err_exit("dio_write.2");
|
|
}
|
|
|
|
if (dio_close(dhandle)) {
|
|
err_exit("dio_close");
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
} |