Code to write directory structure of the ECMA-119 tree.

release-1.5.4.branch
Vreixo Formoso 15 years ago
parent 46ffb6d33d
commit 31ee89c47b
  1. 88
      src/ecma119.c

@ -14,6 +14,7 @@
#include "filesrc.h"
#include "image.h"
#include "writer.h"
#include "messages.h"
#include "util.h"
#include "libburn/libburn.h"
@ -293,10 +294,97 @@ int ecma119_writer_write_vol_desc(IsoImageWriter *writer)
return iso_write(t, &vol, sizeof(struct ecma119_pri_vol_desc));
}
static
int write_one_dir(Ecma119Image *t, Ecma119Node *dir)
{
int ret;
uint8_t buffer[BLOCK_SIZE];
size_t i;
size_t fi_len, len;
/* buf will point to current write position on buffer */
uint8_t *buf = buffer;
/* initialize buffer with 0s */
memset(buffer, 0, BLOCK_SIZE);
/* write the "." and ".." entries first */
write_one_dir_record(t, dir, 0, buf, 1);
buf += 34;
write_one_dir_record(t, dir, 1, buf, 1);
buf += 34;
for (i = 0; i < dir->info.dir.nchildren; i++) {
Ecma119Node *child = dir->info.dir.children[i];
/* compute len of directory entry */
fi_len = strlen(child->iso_name);
len = fi_len + 33 + (fi_len % 2);
if ( (buf + len - buffer) > BLOCK_SIZE ) {
/* dir doesn't fit in current block */
ret = iso_write(t, buffer, BLOCK_SIZE);
if (ret < 0) {
return ret;
}
memset(buffer, 0, BLOCK_SIZE);
buf = buffer;
}
/* write the directory entry in any case */
write_one_dir_record(t, child, -1, buf, fi_len);
buf += len;
}
/* write the last block */
ret = iso_write(t, buffer, BLOCK_SIZE);
return ret;
}
static
int write_dirs(Ecma119Image *t, Ecma119Node *root)
{
int ret;
size_t i;
/* write all directory entries for this dir */
ret = write_one_dir(t, root);
if (ret < 0) {
return ret;
}
/* recurse */
for (i = 0; i < root->info.dir.nchildren; i++) {
Ecma119Node *child = root->info.dir.children[i];
if (child->type == ECMA119_DIR) {
ret = write_dirs(t, child);
if (ret < 0) {
return ret;
}
}
}
return ISO_SUCCESS;
}
/**
* Write both the directory structure (ECMA-119, 6.8) and the L and M
* Path Tables (ECMA-119, 6.9).
*/
static
int ecma119_writer_write_data(IsoImageWriter *writer)
{
int ret;
Ecma119Image *t;
if (writer == NULL) {
return ISO_MEM_ERROR;
}
t = writer->target;
/* first of all, we write the directory structure */
ret = write_dirs(t, t->root);
if (ret < 0) {
return ret;
}
//TODO to implement
return -1;

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