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more bug fixes from unit tests; level 1 looks good

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This commit is contained in:
Josh Coalson
2002-05-11 05:31:56 +00:00
parent 7f05acd97e
commit 2745fe7fde
1 changed files with 68 additions and 24 deletions
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92
src/libFLAC/metadata.c
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@@ -804,13 +804,15 @@ static void iterator_insert_node_(FLAC__MetaData_Iterator *iterator, FLAC__MetaD
FLAC__ASSERT(0 != iterator->chain->tail);
node->data->is_last = false;
node->prev = iterator->current->prev;
node->next = iterator->current;
if(0 == node->prev)
iterator->chain->head = node;
else
node->prev->next = node;
node->next = iterator->current;
iterator->current->prev = node;
iterator->chain->nodes++;
@@ -830,20 +832,36 @@ static void iterator_insert_node_after_(FLAC__MetaData_Iterator *iterator, FLAC_
iterator->current->data->is_last = false;
node->prev = iterator->current;
iterator->current->next = node;
node->next = iterator->current->next;
if(0 == node->next)
iterator->chain->tail = node;
else
node->next->prev = node;
node->prev->next = node;
iterator->chain->tail->data->is_last = true;
iterator->chain->nodes++;
iterator->chain->current_length += (4 + node->data->length); /*@@@ MAGIC NUMBER 4 = metadata block header bytes */
}
/* return true iff node and node->next are both padding */
static FLAC__bool chain_merge_adjacent_padding_(FLAC__MetaData_Chain *chain, FLAC__MetaData_Node *node)
{
if(node->data->type == FLAC__METADATA_TYPE_PADDING && 0 != node->next && node->next->data->type == FLAC__METADATA_TYPE_PADDING) {
const unsigned growth = 4 + node->next->data->length; /*@@@ MAGIC NUMBER 4 = metadata data block header bytes */
node->data->length += growth;
chain->current_length += growth;
chain_delete_node_(chain, node->next);
return true;
}
else
return false;
}
FLAC__MetaData_Chain *FLAC__metadata_chain_new()
{
FLAC__MetaData_Chain *chain = malloc(sizeof(FLAC__MetaData_Chain));
@@ -911,6 +929,8 @@ FLAC__bool FLAC__metadata_chain_read(FLAC__MetaData_Chain *chain, const char *fi
return false;
}
chain->first_offset = iterator->offset[iterator->depth];
do {
node = node_new_();
if(0 == node) {
@@ -931,7 +951,7 @@ FLAC__bool FLAC__metadata_chain_read(FLAC__MetaData_Chain *chain, const char *fi
return false;
}
chain->last_offset = ftell(iterator->file);
chain->last_offset = ftell(iterator->file) + iterator->length;
FLAC__metadata_simple_iterator_delete(iterator);
chain->initial_length = chain->current_length;
@@ -943,22 +963,45 @@ FLAC__bool FLAC__metadata_chain_write(FLAC__MetaData_Chain *chain, FLAC__bool us
struct stat stats;
const char *tempfile_path_prefix = 0;
/*@@@ MAGIC NUMBER 4 = metadata header bytes, appears several times here */
if(use_padding && chain->current_length + 4 <= chain->initial_length) {
FLAC__StreamMetaData *padding;
FLAC__MetaData_Node *node;
if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) {
chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR;
return false;
if(use_padding) {
/*@@@ MAGIC NUMBER 4 = metadata header bytes, appears several times here */
if(chain->current_length < chain->initial_length && chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) {
const unsigned delta = chain->initial_length - chain->current_length;
chain->tail->data->length += delta;
chain->current_length += delta;
FLAC__ASSERT(chain->current_length == chain->initial_length);
}
padding->length = chain->initial_length - (4 + chain->current_length);
if(0 == (node = node_new_())) {
FLAC__metadata_object_delete(padding);
chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR;
return false;
else if(chain->current_length + 4 <= chain->initial_length) {
FLAC__StreamMetaData *padding;
FLAC__MetaData_Node *node;
if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) {
chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR;
return false;
}
padding->length = chain->initial_length - (4 + chain->current_length);
if(0 == (node = node_new_())) {
FLAC__metadata_object_delete(padding);
chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR;
return false;
}
node->data = padding;
chain_append_node_(chain, node);
FLAC__ASSERT(chain->current_length == chain->initial_length);
}
else if(chain->current_length > chain->initial_length) {
const unsigned delta = chain->current_length - chain->initial_length;
if(chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) {
if(chain->tail->data->length + 4 == delta) {
chain_delete_node_(chain, chain->tail);
FLAC__ASSERT(chain->current_length == chain->initial_length);
}
else if(chain->tail->data->length <= delta) {
chain->tail->data->length -= delta;
chain->current_length -= delta;
FLAC__ASSERT(chain->current_length == chain->initial_length);
}
}
}
node->data = padding;
chain_append_node_(chain, node);
}
if(preserve_file_stats)
@@ -987,13 +1030,8 @@ void FLAC__metadata_chain_merge_padding(FLAC__MetaData_Chain *chain)
FLAC__ASSERT(0 != chain);
for(node = chain->head; node; ) {
if(node->data->type == FLAC__METADATA_TYPE_PADDING && 0 != node->next && node->next->data->type == FLAC__METADATA_TYPE_PADDING) {
node->data->length += (4 + node->next->data->length); /*@@@ MAGIC NUMBER 4 = metadata data block header bytes */
chain_delete_node_(chain, node->next);
}
else {
if(!chain_merge_adjacent_padding_(chain, node))
node = node->next;
}
}
}
@@ -1084,6 +1122,7 @@ FLAC__MetaDataType FLAC__metadata_iterator_get_block_type(const FLAC__MetaData_I
{
FLAC__ASSERT(0 != iterator);
FLAC__ASSERT(0 != iterator->current);
FLAC__ASSERT(0 != iterator->current->data);
return iterator->current->data->type;
}
@@ -1096,6 +1135,11 @@ FLAC__StreamMetaData *FLAC__metadata_iterator_get_block(FLAC__MetaData_Iterator
return iterator->current->data;
}
FLAC__bool FLAC__metadata_iterator_set_block(FLAC__MetaData_Iterator *iterator, FLAC__StreamMetaData *block)
{
return FLAC__metadata_iterator_delete_block(iterator, false) && FLAC__metadata_iterator_insert_block_after(iterator, block);
}
FLAC__bool FLAC__metadata_iterator_delete_block(FLAC__MetaData_Iterator *iterator, FLAC__bool replace_with_padding)
{
FLAC__MetaData_Node *save;