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-rw-r--r--src/zip.cr25
1 files changed, 17 insertions, 8 deletions
diff --git a/src/zip.cr b/src/zip.cr
index b358891..9c05569 100644
--- a/src/zip.cr
+++ b/src/zip.cr
@@ -5,7 +5,8 @@ require "zlib"
# TODO:
# [x] date/time
# [x] reader (store and deflate only)
-# [ ] extras
+# [ ] extras (at least infozip)
+# [ ] directories
# [ ] documentation
# [ ] full tests
# [ ] zip64
@@ -999,25 +1000,33 @@ module Zip
# extra field (variable size)
def read(dst_io : IO)
+ # create buffer for local header
+ buf = Bytes.new(30)
+
# move to local header
@io.pos = @pos
+ # read local header into buffer
+ @io.read(buf)
+
+ # create memory io from buffer
+ mem_io = MemoryIO.new(buf)
+
# check magic header
- magic = UInt32.from_io(@io, LE)
+ magic = UInt32.from_io(mem_io, LE)
if magic != MAGIC[:file_header]
raise Error.new("invalid file header magic")
end
# skip local header
- # @io.pos = @pos + 30_u32 + @path_len + @extras_len
- @io.pos = @pos + 26_u32
+ mem_io.pos = 26_u32
# read local name and extras length
- path_len = UInt16.from_io(@io, LE)
- extras_len = UInt16.from_io(@io, LE)
+ path_len = UInt16.from_io(mem_io, LE)
+ extras_len = UInt16.from_io(mem_io, LE)
- # puts "@path_len = #{@path_len}, @extras_len = #{@extras_len}"
- # puts "path_len = #{path_len}, extras_len = #{extras_len}"
+ # close memory io
+ mem_io.close
# skip name and extras
@io.pos = @pos + 30_u32 + path_len + extras_len