From e3f21b6c3253da86dec6cb231581cbbbd4b4a2d7 Mon Sep 17 00:00:00 2001
From: Martin Ashby <martin@ashbysoft.com>
Date: Fri, 15 Sep 2023 21:45:07 +0100
Subject: Add more documented (unsupported) compression methods

---
 src/main.zig | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

(limited to 'src/main.zig')

diff --git a/src/main.zig b/src/main.zig
index 34cb59c..20c939a 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -6,10 +6,33 @@ const std = @import("std");
 const ZipFile = struct {
     const CompressionMethod = enum(u16) {
         store = 0,
+        shrink = 1,
+        reduce_1 = 2,
+        reduce_2 = 3,
+        reduce_3 = 4,
+        reduce_4 = 5,
+        implode = 6,
+        reserved_1 = 7,
         deflate = 8,
+        deflate64 = 9,
+        pkware_implode = 10,
+        reserved_2 = 11,
+        bzip2 = 12,
+        reserved_3 = 13,
         lzma = 14,
+        reserved_4 = 15,
+        ibm_zos_zmpsc = 16,
+        reserved_5 = 17,
+        ibm_terse = 18,
+        ibm_lz77_z = 19,
+        zstd_deprecated = 20,
         zstd = 93,
+        mp3 = 94,
         xz = 95,
+        jpeg = 96,
+        wavpack = 97,
+        ppmd_version_i_rev1 = 98,
+        aex_encryption_marker = 99,
     };
     // [local file header 1]
     // [encryption header 1]
@@ -33,7 +56,6 @@ const ZipFile = struct {
     // [zip64 end of central directory locator]
     // [end of central directory record]
     allocator: std.mem.Allocator,
-    is_zip_64: bool = false,
     end_of_central_directory_record: EndOfCentralDirectoryRecord,
     central_directory_headers: []CentralDirectoryHeader,
     fn from(allocator: std.mem.Allocator, file_or_stream: anytype) !ZipFile {
@@ -101,17 +123,24 @@ const ZipFile = struct {
         var lr = std.io.limitedReader(reader, lfh.compressed_size);
         var limited_reader = lr.reader();
         switch (lfh.compression_method) {
-            .store => { // no compression (store)
+            .store => {
                 var writer = stream_or_file_out.writer();
                 try pump(limited_reader, writer, lfh.uncompressed_size, lfh.crc32);
             },
-            .deflate => { // deflate
+            .deflate => {
                 var decomp = try std.compress.deflate.decompressor(self.allocator, limited_reader, null);
                 defer decomp.deinit();
                 var decomp_reader = decomp.reader();
                 var writer = stream_or_file_out.writer();
                 try pump(decomp_reader, writer, lfh.uncompressed_size, lfh.crc32);
             },
+            .lzma => {
+                var decomp = try std.compress.lzma.decompress(self.allocator, limited_reader);
+                defer decomp.deinit();
+                var decomp_reader = decomp.reader();
+                var writer = stream_or_file_out.writer();
+                try pump(decomp_reader, writer, lfh.uncompressed_size, lfh.crc32);
+            },
             else => {
                 std.log.err("compression method {} not supported", .{lfh.compression_method});
                 return error.CompressionMethodNotSupported;
-- 
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