LHAFileHeader *lha_reader_next_file(LHAReader *reader)
{
// Free the current decoder if there is one.
if (reader->decoder != NULL) {
if (reader->inner_decoder == reader->decoder) {
reader->inner_decoder = NULL;
}
lha_decoder_free(reader->decoder);
reader->decoder = NULL;
}
if (reader->inner_decoder != NULL) {
lha_decoder_free(reader->inner_decoder);
reader->inner_decoder = NULL;
}
// No point continuing once the end of the input stream has
// been reached.
if (reader->curr_file_type == CURR_FILE_EOF) {
return NULL;
}
// Advance to the next file from the input stream?
// Don't advance until we've done the fake directories first.
if (reader->curr_file_type == CURR_FILE_START
|| reader->curr_file_type == CURR_FILE_NORMAL) {
lha_basic_reader_next_file(reader->reader);
}
// Pop off all appropriate directories from the stack first.
if (end_of_top_dir(reader)) {
reader->curr_file = reader->dir_stack;
reader->dir_stack = reader->dir_stack->_next;
reader->curr_file_type = CURR_FILE_FAKE_DIR;
} else {
reader->curr_file = lha_basic_reader_curr_file(reader->reader);
if (reader->curr_file != NULL) {
reader->curr_file_type = CURR_FILE_NORMAL;
} else {
reader->curr_file_type = CURR_FILE_EOF;
}
}
return reader->curr_file;
}
int main(int argc, char *argv[])
{
LHAInputStream *stream;
LHABasicReader *reader;
LHAFileHeader *header;
if (argc < 2) {
printf("Usage: %s <filename>\n", argv[0]);
exit(-1);
}
// Give output in binary mode for cross-platform consistency,
// so that it can be compared correctly on Windows.
lha_arch_set_binary(stdout);
stream = lha_input_stream_from(argv[1]);
if (stream == NULL) {
fprintf(stderr, "Failed to open '%s'\n", argv[1]);
exit(-1);
}
reader = lha_basic_reader_new(stream);
for (;;) {
header = lha_basic_reader_next_file(reader);
if (header == NULL) {
break;
}
print_header(header);
printf("--\n");
}
lha_basic_reader_free(reader);
lha_input_stream_free(stream);
return 0;
}
