diff options
| -rw-r--r-- | design.txt | 49 |
1 files changed, 37 insertions, 12 deletions
@@ -1,31 +1,56 @@ -file_read(buffer, size, user_data) +file_read(user_data, buffer, *size) file = user_data - return fread(buffer, 1, size, file) + *size = fread(buffer, 1, *size, file) extract(file_name, outer_member, inner_action) - file = fopen(file_name, "rb") + FILE *file = fopen(file_name, "rb") outer_gzip = gzip_init(&file_read, file) outer_ustar = ustar_init(outer_gzip) ustar_seek(outer_ustar, outer_member) - inner_gzip = gzip_init(ustar_next_data_record, outer_ustar) + inner_gzip = gzip_init(&ustar_read, outer_ustar) inner_ustar = ustar_init(inner_gzip) inner_action(inner_ustar) -print_data(data, size) - fwrite(data, 1, size, stdout) - read_control(inner_ustar) + unsigned char buffer[512] + size ustar_seek(inner_ustar, "control") - ustar_read(inner_ustar, &print_data) - -print_member(member) - printf("%s", member->name) + while ((ret = ustar_read(inner_ustar, buffer, &size)) == OK) + fwrite(buffer, 1 size, stdout) + if ret == ERROR + return list_members(inner_ustar) - ustar_list(inner_ustar, &print_member) + ustar_member member + while ((ret = ustar_list(inner_ustar, &member)) == OK) + printf("%s", member.name) + if ret == ERROR + return main() if -I extract(argv[1], "control.tar.gz", &read_control) else if -c extract(argv[1], "data.tar.gz", &list_members) + +--- + +struct gzip * +gzip_init(int (*read)(void *, char *, size_t *), void *user_data) + +int +gzip_read(struct gzip *gzip, void *record) + +--- + +struct ustar * +ustar_init(struct gzip *gzip) + +int +ustar_list(struct ustar *ustar, ustar_member *member) + +int +ustar_seek(ustruct star *ustar, const char *member) + +int +ustar_read(struct ustar *ustar, char *buffer, size_t *size) |