module szip import os #flag -I @VROOT/thirdparty/zip #include "zip.c" #include "zip.h" struct C.zip_t { } type Zip = C.zip_t fn C.zip_open(byteptr, int, byte) &Zip fn C.zip_close(&Zip) fn C.zip_entry_open(&Zip, byteptr) int fn C.zip_entry_close(&Zip) int fn C.zip_entry_name(&Zip) byteptr fn C.zip_entry_index(&Zip) int fn C.zip_entry_isdir(&Zip) int fn C.zip_entry_size(&Zip) u64 fn C.zip_entry_crc32(&Zip) u32 fn C.zip_entry_write(&Zip, voidptr, int) int fn C.zip_entry_fwrite(&Zip, byteptr) int fn C.zip_entry_read(&Zip, byteptr, int) int fn C.zip_entry_fread(&Zip, byteptr) int fn C.zip_total_entries(&Zip) int // CompressionLevel lists compression levels, see in "thirdparty/zip/miniz.h" pub enum CompressionLevel { no_compression = 0 best_speed = 1 best_compression = 9 uber_compression = 10 default_level = 6 default_compression = -1 } // OpenMode lists the opening modes // .write: opens a file for reading/extracting (the file must exists). // .read_only: creates an empty file for writing. // .append: appends to an existing archive. pub enum OpenMode { write read_only append } [inline] fn (om OpenMode) to_byte() byte { return match om { .write { `w` } .read_only { `r` } .append { `a` } } } // open opens zip archive with compression level using the given mode. // name: the name of the zip file to open. // level: can be any value of the CompressionLevel enum. // mode: can be any value of the OpenMode enum. pub fn open(name string, level CompressionLevel, mode OpenMode) ?&Zip { if name.len == 0 { return error('szip: name of file empty') } p_zip := &Zip(C.zip_open(name.str, int(level), mode.to_byte())) if isnil(p_zip) { return error('szip: cannot open/create/append new zip archive') } return p_zip } // close closes the zip archive, releases resources - always finalize. [inline] pub fn (mut z Zip) close() { C.zip_close(z) } // open_entry opens an entry by name in the zip archive. // For zip archive opened in 'w' or 'a' mode the function will append // a new entry. In readonly mode the function tries to locate the entry // in global dictionary. pub fn (mut zentry Zip) open_entry(name string) ? { res := C.zip_entry_open(zentry, name.str) if res == -1 { return error('szip: cannot open archive entry') } } // close_entry closes a zip entry, flushes buffer and releases resources. [inline] pub fn (mut zentry Zip) close_entry() { C.zip_entry_close(zentry) } // name returns a local name of the current zip entry. // The main difference between user's entry name and local entry name // is optional relative path. // Following .ZIP File Format Specification - the path stored MUST not contain // a drive or device letter, or a leading slash. // All slashes MUST be forward slashes '/' as opposed to backwards slashes '\' // for compatibility with Amiga and UNIX file systems etc. pub fn (mut zentry Zip) name() string { name := C.zip_entry_name(zentry) if name == 0 { return '' } return unsafe { name.vstring() } } // index returns an index of the current zip entry. pub fn (mut zentry Zip) index() ?int { index := int(C.zip_entry_index(zentry)) if index == -1 { return error('szip: cannot get current index of zip entry') } return index // must be check for INVALID_VALUE } // is_dir determines if the current zip entry is a directory entry. pub fn (mut zentry Zip) is_dir() ?bool { isdir := C.zip_entry_isdir(zentry) if isdir < 0 { return error('szip: cannot check entry type') } return isdir == 1 } // size returns an uncompressed size of the current zip entry. [inline] pub fn (mut zentry Zip) size() u64 { return C.zip_entry_size(zentry) } // crc32 returns CRC-32 checksum of the current zip entry. [inline] pub fn (mut zentry Zip) crc32() u32 { return C.zip_entry_crc32(zentry) } // write_entry compresses an input buffer for the current zip entry. pub fn (mut zentry Zip) write_entry(data []byte) ? { if (data[0] & 0xff) == -1 { return error('szip: cannot write entry') } res := C.zip_entry_write(zentry, data.data, data.len) if res != 0 { return error('szip: failed to write entry') } } // create_entry compresses a file for the current zip entry. pub fn (mut zentry Zip) create_entry(name string) ? { res := C.zip_entry_fwrite(zentry, name.str) if res != 0 { return error('szip: failed to create entry') } } // read_entry extracts the current zip entry into output buffer. // The function allocates sufficient memory for an output buffer. // NOTE: remember to release the memory allocated for an output buffer. // for large entries, please take a look at zip_entry_extract function. pub fn (mut zentry Zip) read_entry() ?voidptr { mut buf := voidptr(0) mut bsize := i64(0) res := C.zip_entry_read(zentry, &buf, &bsize) if res == -1 { return error('szip: cannot read properly data from entry') } return buf } // extract_entry extracts the current zip entry into output file. pub fn (mut zentry Zip) extract_entry(path string) ? { if !os.is_file(path) { return error('szip: cannot open file for extracting, "$path" not exists') } res := C.zip_entry_fread(zentry, path.str) if res != 0 { return error('szip: failed to extract entry') } } /* extract extracts the current zip entry using a callback function (on_extract). fn (mut zentry Zip) extract(path string) bool { if C.access(path.str, 0) == -1 { return false // return error('szip: cannot open directory for extracting, directory not exists') } res := C.zip_extract(zentry, path.str, 0, 0) return res == 0 } */ // total returns the number of all entries (files and directories) in the zip archive. pub fn (mut zentry Zip) total() ?int { tentry := int(C.zip_total_entries(zentry)) if tentry == -1 { return error('szip: cannot count total entries') } return tentry }