read_file_ll.c

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#include <sqsh.h>
#include <stdio.h>
 
int
main(int argc, char *argv[]) {
    int error_code = 0;
    if (argc != 3) {
        printf("Usage: %s <sqsh-file> <path>\n", argv[0]);
        return 1;
    }
    struct SqshConfig config = {
            // Read the header file to find documentation on these fields.
            // It's safe to set them all to 0.
            .source_mapper = sqsh_mapper_impl_mmap,
            .source_size = 0,
            .mapper_block_size = 0,
            .mapper_lru_size = 0,
            .metablock_lru_size = 0,
            .data_lru_size = 0,
            .archive_offset = 0,
            .max_symlink_depth = 0,
    };
    struct SqshArchive *archive =
            sqsh_archive_open(argv[1], &config, &error_code);
    if (error_code != 0) {
        sqsh_perror(error_code, "sqsh_archive_new");
        return 1;
    }
    struct SqshFile *file = sqsh_open(archive, argv[2], &error_code);
    if (error_code != 0) {
        sqsh_perror(error_code, "sqsh_open");
        return 1;
    }
 
    struct SqshFileIterator *iterator =
            sqsh_file_iterator_new(file, &error_code);
    if (error_code != 0) {
        sqsh_perror(error_code, "sqsh_file_iterator_new");
        return 1;
    }
 
    while (sqsh_file_iterator_next(iterator, SIZE_MAX, &error_code)) {
        const uint8_t *data = sqsh_file_iterator_data(iterator);
        size_t size = sqsh_file_iterator_size(iterator);
        fwrite(data, size, 1, stdout);
    }
    if (error_code < 0) {
        sqsh_perror(error_code, "sqsh_file_iterator_next");
        return 1;
    }
 
    sqsh_file_iterator_free(iterator);
    sqsh_close(file);
    sqsh_archive_close(archive);
    return 0;
}