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prodos: load sapling support

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This commit is contained in:
Vince Weaver 2021-08-01 19:41:38 -04:00
parent 0cba4da691
commit 166f24075f
1 changed files with 37 additions and 66 deletions
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103
utils/prodos-utils/prodos.c
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@ -509,8 +509,9 @@ static int prodos_load_file(struct voldir_t *voldir,
int output_fd;
unsigned char data[PRODOS_BYTES_PER_BLOCK];
unsigned char index_block[PRODOS_BYTES_PER_BLOCK];
unsigned char sector_buffer[PRODOS_BYTES_PER_BLOCK];
int result;
int result,chunk,chunk_block;
struct file_entry_t file;
/* FIXME! Warn if overwriting file! */
@ -546,9 +547,41 @@ static int prodos_load_file(struct voldir_t *voldir,
break;
case PRODOS_FILE_SAPLING:
case PRODOS_FILE_TREE:
case PRODOS_FILE_SUBDIR:
/* Just a single block */
if (debug) fprintf(stderr,"Loading index "
"block $%x\n",
file.key_pointer);
result=prodos_read_block(voldir,index_block,
file.key_pointer);
if (result<0) {
return result;
}
for(chunk=0;chunk<file.blocks_used;chunk++) {
chunk_block=(index_block[chunk])|(index_block[chunk+256]<<8);
result=prodos_read_block(voldir,data,
chunk_block);
if (result<0) {
return result;
}
result=write(output_fd,data,PRODOS_BYTES_PER_BLOCK);
if (result!=PRODOS_BYTES_PER_BLOCK) {
fprintf(stderr,"Error writing file!\n");
return -1;
}
}
/* truncate to actual size of file */
ftruncate(output_fd,file.eof);
break;
case PRODOS_FILE_TREE:
case PRODOS_FILE_SUBDIR:
case PRODOS_FILE_DELETED:
case PRODOS_FILE_SUBDIR_HDR:
case PRODOS_FILE_VOLUME_HDR:
@ -559,70 +592,8 @@ static int prodos_load_file(struct voldir_t *voldir,
break;
}
#if 0
keep_saving:
/* Read in TSL Sector */
lseek(fd,DISK_OFFSET(tsl_track,tsl_sector),SEEK_SET);
result=read(fd,sector_buffer,PRODOS_BYTES_PER_BLOCK);
tsl_pointer=0;
close(output_fd);
/* check each track/sector pair in the list */
while(tsl_pointer<TSL_MAX_NUMBER) {
/* get the t/s value */
data_t=sector_buffer[TSL_LIST+(tsl_pointer*TSL_ENTRY_SIZE)];
data_s=sector_buffer[TSL_LIST+(tsl_pointer*TSL_ENTRY_SIZE)+1];
if ((data_s==0) && (data_t==0)) {
/* empty */
}
else {
lseek(fd,DISK_OFFSET(data_t,data_s),SEEK_SET);
result=read(fd,&data_sector,PRODOS_BYTES_PER_BLOCK);
/* some file formats have the size in the first sector */
/* so cheat and get real file size from file itself */
if (output_pointer==0) {
switch(file_type) {
case 'A':
case 'I':
file_size=data_sector[0]+(data_sector[1]<<8)+2;
break;
case 'B':
file_size=data_sector[2]+(data_sector[3]<<8)+4;
break;
default:
file_size=-1;
}
}
/* write the block read in out to the output file */
lseek(output_fd,output_pointer*PRODOS_BYTES_PER_BLOCK,SEEK_SET);
result=write(output_fd,&data_sector,PRODOS_BYTES_PER_BLOCK);
}
output_pointer++;
tsl_pointer++;
}
/* finished with TSL sector, see if we have another */
tsl_track=sector_buffer[TSL_NEXT_TRACK];
tsl_sector=sector_buffer[TSL_NEXT_SECTOR];
// printf("Next track/sector=%d/%d op=%d\n",tsl_track,tsl_sector,
// output_pointer*PRODOS_BYTES_PER_BLOCK);
if ((tsl_track==0) && (tsl_sector==0)) {
}
else goto keep_saving;
/* Correct the file size */
if (file_size>=0) {
// printf("Truncating file size to %d\n",file_size);
result=ftruncate(output_fd,file_size);
}
if (result<0) fprintf(stderr,"Error on I/O\n");
#endif
return 0;
}