mirror of
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gzip package
R=dsymonds DELTA=559 (559 added, 0 deleted, 0 changed) OCL=29993 CL=30005
This commit is contained in:
parent
38801e55db
commit
f52c02641e
@ -1,6 +1,8 @@
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bignum.install: fmt.install
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bufio.install: io.install os.install utf8.install
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bytes.install: utf8.install
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compress/flate.install: bufio.install fmt.install io.install os.install strconv.install
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compress/gzip.install: bufio.install compress/flate.install hash.install hash/crc32.install io.install os.install
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container/list.install:
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container/vector.install:
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crypto/aes.install: os.install
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@ -15,6 +15,8 @@ DIRS=\
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bignum\
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bufio\
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bytes\
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compress/flate\
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compress/gzip\
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container/list\
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container/vector\
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crypto/aes\
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60
src/lib/compress/gzip/Makefile
Normal file
60
src/lib/compress/gzip/Makefile
Normal file
@ -0,0 +1,60 @@
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# DO NOT EDIT. Automatically generated by gobuild.
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# gobuild -m >Makefile
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D=/compress/
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include $(GOROOT)/src/Make.$(GOARCH)
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AR=gopack
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default: packages
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clean:
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rm -rf *.[$(OS)] *.a [$(OS)].out _obj
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test: packages
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gotest
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coverage: packages
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gotest
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6cov -g `pwd` | grep -v '_test\.go:'
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%.$O: %.go
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$(GC) -I_obj $*.go
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%.$O: %.c
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$(CC) $*.c
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%.$O: %.s
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$(AS) $*.s
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O1=\
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gunzip.$O\
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phases: a1
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_obj$D/gzip.a: phases
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a1: $(O1)
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$(AR) grc _obj$D/gzip.a gunzip.$O
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rm -f $(O1)
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newpkg: clean
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mkdir -p _obj$D
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$(AR) grc _obj$D/gzip.a
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$(O1): newpkg
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$(O2): a1
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nuke: clean
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rm -f $(GOROOT)/pkg/$(GOOS)_$(GOARCH)$D/gzip.a
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packages: _obj$D/gzip.a
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install: packages
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test -d $(GOROOT)/pkg && mkdir -p $(GOROOT)/pkg/$(GOOS)_$(GOARCH)$D
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cp _obj$D/gzip.a $(GOROOT)/pkg/$(GOOS)_$(GOARCH)$D/gzip.a
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236
src/lib/compress/gzip/gunzip.go
Normal file
236
src/lib/compress/gzip/gunzip.go
Normal file
@ -0,0 +1,236 @@
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// The gzip package implements reading (and eventually writing) of
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// gzip format compressed files, as specified in RFC 1952.
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package gzip
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import (
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"bufio";
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"compress/flate";
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"hash";
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"hash/crc32";
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"io";
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"os";
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)
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const (
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gzipID1 = 0x1f;
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gzipID2 = 0x8b;
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gzipDeflate = 8;
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flagText = 1<<0;
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flagHdrCrc = 1<<1;
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flagExtra = 1<<2;
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flagName = 1<<3;
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flagComment = 1<<4;
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)
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func makeReader(r io.Reader) flate.Reader {
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if rr, ok := r.(flate.Reader); ok {
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return rr;
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}
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return bufio.NewReader(r);
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}
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var HeaderError os.Error = os.ErrorString("invalid gzip header")
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var ChecksumError os.Error = os.ErrorString("gzip checksum error")
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// A GzipInflater is an io.Reader that can be read to retrieve
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// uncompressed data from a gzip-format compressed file.
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// The gzip file stores a header giving metadata about the compressed file.
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// That header is exposed as the fields of the GzipInflater struct.
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//
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// In general, a gzip file can be a concatenation of gzip files,
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// each with its own header. Reads from the GzipInflater
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// return the concatenation of the uncompressed data of each.
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// Only the first header is recorded in the GzipInflater fields.
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//
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// Gzip files store a length and checksum of the uncompressed data.
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// The GzipInflater will return a ChecksumError when Read
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// reaches the end of the uncompressed data if it does not
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// have the expected length or checksum. Clients should treat data
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// returned by Read as tentative until they receive the successful
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// (zero length, nil error) Read marking the end of the data.
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type GzipInflater struct {
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Comment string; // comment
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Extra []byte; // "extra data"
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Mtime uint32; // modification time (seconds since January 1, 1970)
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Name string; // file name
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OS byte; // operating system type
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r flate.Reader;
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inflater io.Reader;
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digest hash.Hash32;
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size uint32;
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flg byte;
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buf [512]byte;
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err os.Error;
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eof bool;
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}
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func (z *GzipInflater) readHeader(save bool) os.Error
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// NewGzipInflater creates a new GzipInflater reading the given reader.
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// The implementation buffers input and may read more data than necessary from r.
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func NewGzipInflater(r io.Reader) (*GzipInflater, os.Error) {
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z := new(GzipInflater);
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z.r = makeReader(r);
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z.digest = crc32.NewIEEE();
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if err := z.readHeader(true); err != nil {
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z.err = err;
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return nil, err;
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}
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return z, nil;
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}
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func get4(p []byte) uint32 {
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return uint32(p[0]) | uint32(p[1])<<8 | uint32(p[2])<<16 | uint32(p[3])<<24;
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}
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func (z *GzipInflater) readString() (string, os.Error) {
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var err os.Error;
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for i := 0;; i++ {
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if i >= len(z.buf) {
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return "", HeaderError;
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}
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z.buf[i], err = z.r.ReadByte();
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if err != nil {
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return "", err;
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}
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if z.buf[i] == 0 {
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return string(z.buf[0:i]), nil;
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}
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}
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panic("not reached");
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}
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func (z *GzipInflater) read2() (uint32, os.Error) {
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_, err := z.r.Read(z.buf[0:2]);
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if err != nil {
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return 0, err;
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}
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return uint32(z.buf[0]) | uint32(z.buf[1])<<8, nil;
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}
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func (z *GzipInflater) readHeader(save bool) os.Error {
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n, err := io.FullRead(z.r, z.buf[0:10]);
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if err != nil {
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if n != 0 && err == io.ErrEOF {
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return HeaderError;
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}
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return err;
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}
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if z.buf[0] != gzipID1 || z.buf[1] != gzipID2 || z.buf[2] != gzipDeflate {
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return HeaderError;
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}
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z.flg = z.buf[3];
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if save {
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z.Mtime = get4(z.buf[4:8]);
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// z.buf[8] is xfl, ignored
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z.OS = z.buf[9];
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}
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z.digest.Reset();
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z.digest.Write(z.buf[0:10]);
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if z.flg & flagExtra != 0{
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n, err := z.read2();
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if err != nil {
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return err;
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}
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data := make([]byte, n);
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var nn int;
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if nn, err = io.FullRead(z.r, data); err != nil {
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return err;
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}
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if save {
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z.Extra = data;
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}
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}
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var s string;
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if z.flg & flagName != 0 {
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if s, err = z.readString(); err != nil {
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return err;
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}
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if save {
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z.Name = s;
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}
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}
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if z.flg & flagComment != 0 {
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if s, err = z.readString(); err != nil {
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return err;
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}
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if save {
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z.Comment = s;
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}
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}
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if z.flg & flagHdrCrc != 0 {
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n, err := z.read2();
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if err != nil {
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return err;
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}
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sum := z.digest.Sum32() & 0xFFFF;
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if n != sum {
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return HeaderError;
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}
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}
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z.digest.Reset();
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z.inflater = flate.NewInflater(z.r);
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return nil;
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}
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func (z *GzipInflater) Read(p []byte) (n int, err os.Error) {
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if z.err != nil {
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return 0, z.err;
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}
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if z.eof || len(p) == 0 {
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return 0, nil;
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}
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n, err = z.inflater.Read(p);
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z.digest.Write(p[0:n]);
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z.size += uint32(n);
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if n != 0 || err != nil {
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z.err = err;
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return;
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}
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// Finished file; check checksum + size.
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if _, err := io.FullRead(z.r, z.buf[0:8]); err != nil {
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z.err = err;
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return 0, err;
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}
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if err != nil {
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z.err = err;
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return 0, err;
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}
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crc32, isize := get4(z.buf[0:4]), get4(z.buf[4:8]);
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sum := z.digest.Sum32();
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if sum != crc32 || isize != z.size {
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z.err = ChecksumError;
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return 0, z.err;
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}
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// File is ok; is there another?
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switch err = z.readHeader(false); {
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case err == io.ErrEOF:
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err = nil;
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z.eof = true;
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return;
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case err != nil:
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z.err = err;
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return;
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}
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// Yes. Reset and read from it.
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z.digest.Reset();
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z.size = 0;
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return z.Read(p);
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}
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|
268
src/lib/compress/gzip/gunzip_test.go
Normal file
268
src/lib/compress/gzip/gunzip_test.go
Normal file
@ -0,0 +1,268 @@
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package gzip
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import (
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"compress/gzip";
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"fmt";
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"io";
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"testing";
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"os";
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)
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type gzipTest struct {
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name string;
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raw string;
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gzip []byte;
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err os.Error;
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}
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var gzipTests = []gzipTest {
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gzipTest { // has 1 empty fixed-huffman block
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"empty.txt",
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"",
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[]byte {
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0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a,
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0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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nil
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},
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gzipTest { // has 1 non-empty fixed huffman block
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"hello.txt",
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"hello world\n",
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[]byte {
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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||||
},
|
||||
nil
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||||
},
|
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gzipTest { // concatenation
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"hello.txt",
|
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"hello world\n"
|
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"hello world\n",
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[]byte {
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
||||
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
||||
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
||||
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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||||
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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||||
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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||||
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
||||
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
||||
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
||||
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
|
||||
0x00, 0x00,
|
||||
},
|
||||
nil
|
||||
},
|
||||
gzipTest { // has dynamic huffman blocks
|
||||
"gettysburg",
|
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" Four score and seven years ago our fathers brought forth on\n"
|
||||
"this continent, a new nation, conceived in Liberty, and dedicated\n"
|
||||
"to the proposition that all men are created equal.\n"
|
||||
" Now we are engaged in a great Civil War, testing whether that\n"
|
||||
"nation, or any nation so conceived and so dedicated, can long\n"
|
||||
"endure.\n"
|
||||
" We are met on a great battle-field of that war.\n"
|
||||
" We have come to dedicate a portion of that field, as a final\n"
|
||||
"resting place for those who here gave their lives that that\n"
|
||||
"nation might live. It is altogether fitting and proper that\n"
|
||||
"we should do this.\n"
|
||||
" But, in a larger sense, we can not dedicate — we can not\n"
|
||||
"consecrate — we can not hallow — this ground.\n"
|
||||
" The brave men, living and dead, who struggled here, have\n"
|
||||
"consecrated it, far above our poor power to add or detract.\n"
|
||||
"The world will little note, nor long remember what we say here,\n"
|
||||
"but it can never forget what they did here.\n"
|
||||
" It is for us the living, rather, to be dedicated here to the\n"
|
||||
"unfinished work which they who fought here have thus far so\n"
|
||||
"nobly advanced. It is rather for us to be here dedicated to\n"
|
||||
"the great task remaining before us — that from these honored\n"
|
||||
"dead we take increased devotion to that cause for which they\n"
|
||||
"gave the last full measure of devotion —\n"
|
||||
" that we here highly resolve that these dead shall not have\n"
|
||||
"died in vain — that this nation, under God, shall have a new\n"
|
||||
"birth of freedom — and that government of the people, by the\n"
|
||||
"people, for the people, shall not perish from this earth.\n"
|
||||
"\n"
|
||||
"Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania\n",
|
||||
[]byte {
|
||||
0x1f, 0x8b, 0x08, 0x08, 0xd1, 0x12, 0x2b, 0x4a,
|
||||
0x00, 0x03, 0x67, 0x65, 0x74, 0x74, 0x79, 0x73,
|
||||
0x62, 0x75, 0x72, 0x67, 0x00, 0x65, 0x54, 0xcd,
|
||||
0x6e, 0xd4, 0x30, 0x10, 0xbe, 0xfb, 0x29, 0xe6,
|
||||
0x01, 0x42, 0xa5, 0x0a, 0x09, 0xc1, 0x11, 0x90,
|
||||
0x40, 0x48, 0xa8, 0xe2, 0x80, 0xd4, 0xf3, 0x24,
|
||||
0x9e, 0x24, 0x56, 0xbd, 0x9e, 0xc5, 0x76, 0x76,
|
||||
0x95, 0x1b, 0x0f, 0xc1, 0x13, 0xf2, 0x24, 0x7c,
|
||||
0x63, 0x77, 0x9b, 0x4a, 0x5c, 0xaa, 0x6e, 0x6c,
|
||||
0xcf, 0x7c, 0x7f, 0x33, 0x44, 0x5f, 0x74, 0xcb,
|
||||
0x54, 0x26, 0xcd, 0x42, 0x9c, 0x3c, 0x15, 0xb9,
|
||||
0x48, 0xa2, 0x5d, 0x38, 0x17, 0xe2, 0x45, 0xc9,
|
||||
0x4e, 0x67, 0xae, 0xab, 0xe0, 0xf7, 0x98, 0x75,
|
||||
0x5b, 0xd6, 0x4a, 0xb3, 0xe6, 0xba, 0x92, 0x26,
|
||||
0x57, 0xd7, 0x50, 0x68, 0xd2, 0x54, 0x43, 0x92,
|
||||
0x54, 0x07, 0x62, 0x4a, 0x72, 0xa5, 0xc4, 0x35,
|
||||
0x68, 0x1a, 0xec, 0x60, 0x92, 0x70, 0x11, 0x4f,
|
||||
0x21, 0xd1, 0xf7, 0x30, 0x4a, 0xae, 0xfb, 0xd0,
|
||||
0x9a, 0x78, 0xf1, 0x61, 0xe2, 0x2a, 0xde, 0x55,
|
||||
0x25, 0xd4, 0xa6, 0x73, 0xd6, 0xb3, 0x96, 0x60,
|
||||
0xef, 0xf0, 0x9b, 0x2b, 0x71, 0x8c, 0x74, 0x02,
|
||||
0x10, 0x06, 0xac, 0x29, 0x8b, 0xdd, 0x25, 0xf9,
|
||||
0xb5, 0x71, 0xbc, 0x73, 0x44, 0x0f, 0x7a, 0xa5,
|
||||
0xab, 0xb4, 0x33, 0x49, 0x0b, 0x2f, 0xbd, 0x03,
|
||||
0xd3, 0x62, 0x17, 0xe9, 0x73, 0xb8, 0x84, 0x48,
|
||||
0x8f, 0x9c, 0x07, 0xaa, 0x52, 0x00, 0x6d, 0xa1,
|
||||
0xeb, 0x2a, 0xc6, 0xa0, 0x95, 0x76, 0x37, 0x78,
|
||||
0x9a, 0x81, 0x65, 0x7f, 0x46, 0x4b, 0x45, 0x5f,
|
||||
0xe1, 0x6d, 0x42, 0xe8, 0x01, 0x13, 0x5c, 0x38,
|
||||
0x51, 0xd4, 0xb4, 0x38, 0x49, 0x7e, 0xcb, 0x62,
|
||||
0x28, 0x1e, 0x3b, 0x82, 0x93, 0x54, 0x48, 0xf1,
|
||||
0xd2, 0x7d, 0xe4, 0x5a, 0xa3, 0xbc, 0x99, 0x83,
|
||||
0x44, 0x4f, 0x3a, 0x77, 0x36, 0x57, 0xce, 0xcf,
|
||||
0x2f, 0x56, 0xbe, 0x80, 0x90, 0x9e, 0x84, 0xea,
|
||||
0x51, 0x1f, 0x8f, 0xcf, 0x90, 0xd4, 0x60, 0xdc,
|
||||
0x5e, 0xb4, 0xf7, 0x10, 0x0b, 0x26, 0xe0, 0xff,
|
||||
0xc4, 0xd1, 0xe5, 0x67, 0x2e, 0xe7, 0xc8, 0x93,
|
||||
0x98, 0x05, 0xb8, 0xa8, 0x45, 0xc0, 0x4d, 0x09,
|
||||
0xdc, 0x84, 0x16, 0x2b, 0x0d, 0x9a, 0x21, 0x53,
|
||||
0x04, 0x8b, 0xd2, 0x0b, 0xbd, 0xa2, 0x4c, 0xa7,
|
||||
0x60, 0xee, 0xd9, 0xe1, 0x1d, 0xd1, 0xb7, 0x4a,
|
||||
0x30, 0x8f, 0x63, 0xd5, 0xa5, 0x8b, 0x33, 0x87,
|
||||
0xda, 0x1a, 0x18, 0x79, 0xf3, 0xe3, 0xa6, 0x17,
|
||||
0x94, 0x2e, 0xab, 0x6e, 0xa0, 0xe3, 0xcd, 0xac,
|
||||
0x50, 0x8c, 0xca, 0xa7, 0x0d, 0x76, 0x37, 0xd1,
|
||||
0x23, 0xe7, 0x05, 0x57, 0x8b, 0xa4, 0x22, 0x83,
|
||||
0xd9, 0x62, 0x52, 0x25, 0xad, 0x07, 0xbb, 0xbf,
|
||||
0xbf, 0xff, 0xbc, 0xfa, 0xee, 0x20, 0x73, 0x91,
|
||||
0x29, 0xff, 0x7f, 0x02, 0x71, 0x62, 0x84, 0xb5,
|
||||
0xf6, 0xb5, 0x25, 0x6b, 0x41, 0xde, 0x92, 0xb7,
|
||||
0x76, 0x3f, 0x91, 0x91, 0x31, 0x1b, 0x41, 0x84,
|
||||
0x62, 0x30, 0x0a, 0x37, 0xa4, 0x5e, 0x18, 0x3a,
|
||||
0x99, 0x08, 0xa5, 0xe6, 0x6d, 0x59, 0x22, 0xec,
|
||||
0x33, 0x39, 0x86, 0x26, 0xf5, 0xab, 0x66, 0xc8,
|
||||
0x08, 0x20, 0xcf, 0x0c, 0xd7, 0x47, 0x45, 0x21,
|
||||
0x0b, 0xf6, 0x59, 0xd5, 0xfe, 0x5c, 0x8d, 0xaa,
|
||||
0x12, 0x7b, 0x6f, 0xa1, 0xf0, 0x52, 0x33, 0x4f,
|
||||
0xf5, 0xce, 0x59, 0xd3, 0xab, 0x66, 0x10, 0xbf,
|
||||
0x06, 0xc4, 0x31, 0x06, 0x73, 0xd6, 0x80, 0xa2,
|
||||
0x78, 0xc2, 0x45, 0xcb, 0x03, 0x65, 0x39, 0xc9,
|
||||
0x09, 0xd1, 0x06, 0x04, 0x33, 0x1a, 0x5a, 0xf1,
|
||||
0xde, 0x01, 0xb8, 0x71, 0x83, 0xc4, 0xb5, 0xb3,
|
||||
0xc3, 0x54, 0x65, 0x33, 0x0d, 0x5a, 0xf7, 0x9b,
|
||||
0x90, 0x7c, 0x27, 0x1f, 0x3a, 0x58, 0xa3, 0xd8,
|
||||
0xfd, 0x30, 0x5f, 0xb7, 0xd2, 0x66, 0xa2, 0x93,
|
||||
0x1c, 0x28, 0xb7, 0xe9, 0x1b, 0x0c, 0xe1, 0x28,
|
||||
0x47, 0x26, 0xbb, 0xe9, 0x7d, 0x7e, 0xdc, 0x96,
|
||||
0x10, 0x92, 0x50, 0x56, 0x7c, 0x06, 0xe2, 0x27,
|
||||
0xb4, 0x08, 0xd3, 0xda, 0x7b, 0x98, 0x34, 0x73,
|
||||
0x9f, 0xdb, 0xf6, 0x62, 0xed, 0x31, 0x41, 0x13,
|
||||
0xd3, 0xa2, 0xa8, 0x4b, 0x3a, 0xc6, 0x1d, 0xe4,
|
||||
0x2f, 0x8c, 0xf8, 0xfb, 0x97, 0x64, 0xf4, 0xb6,
|
||||
0x2f, 0x80, 0x5a, 0xf3, 0x56, 0xe0, 0x40, 0x50,
|
||||
0xd5, 0x19, 0xd0, 0x1e, 0xfc, 0xca, 0xe5, 0xc9,
|
||||
0xd4, 0x60, 0x00, 0x81, 0x2e, 0xa3, 0xcc, 0xb6,
|
||||
0x52, 0xf0, 0xb4, 0xdb, 0x69, 0x99, 0xce, 0x7a,
|
||||
0x32, 0x4c, 0x08, 0xed, 0xaa, 0x10, 0x10, 0xe3,
|
||||
0x6f, 0xee, 0x99, 0x68, 0x95, 0x9f, 0x04, 0x71,
|
||||
0xb2, 0x49, 0x2f, 0x62, 0xa6, 0x5e, 0xb4, 0xef,
|
||||
0x02, 0xed, 0x4f, 0x27, 0xde, 0x4a, 0x0f, 0xfd,
|
||||
0xc1, 0xcc, 0xdd, 0x02, 0x8f, 0x08, 0x16, 0x54,
|
||||
0xdf, 0xda, 0xca, 0xe0, 0x82, 0xf1, 0xb4, 0x31,
|
||||
0x7a, 0xa9, 0x81, 0xfe, 0x90, 0xb7, 0x3e, 0xdb,
|
||||
0xd3, 0x35, 0xc0, 0x20, 0x80, 0x33, 0x46, 0x4a,
|
||||
0x63, 0xab, 0xd1, 0x0d, 0x29, 0xd2, 0xe2, 0x84,
|
||||
0xb8, 0xdb, 0xfa, 0xe9, 0x89, 0x44, 0x86, 0x7c,
|
||||
0xe8, 0x0b, 0xe6, 0x02, 0x6a, 0x07, 0x9b, 0x96,
|
||||
0xd0, 0xdb, 0x2e, 0x41, 0x4c, 0xa1, 0xd5, 0x57,
|
||||
0x45, 0x14, 0xfb, 0xe3, 0xa6, 0x72, 0x5b, 0x87,
|
||||
0x6e, 0x0c, 0x6d, 0x5b, 0xce, 0xe0, 0x2f, 0xe2,
|
||||
0x21, 0x81, 0x95, 0xb0, 0xe8, 0xb6, 0x32, 0x0b,
|
||||
0xb2, 0x98, 0x13, 0x52, 0x5d, 0xfb, 0xec, 0x63,
|
||||
0x17, 0x8a, 0x9e, 0x23, 0x22, 0x36, 0xee, 0xcd,
|
||||
0xda, 0xdb, 0xcf, 0x3e, 0xf1, 0xc7, 0xf1, 0x01,
|
||||
0x12, 0x93, 0x0a, 0xeb, 0x6f, 0xf2, 0x02, 0x15,
|
||||
0x96, 0x77, 0x5d, 0xef, 0x9c, 0xfb, 0x88, 0x91,
|
||||
0x59, 0xf9, 0x84, 0xdd, 0x9b, 0x26, 0x8d, 0x80,
|
||||
0xf9, 0x80, 0x66, 0x2d, 0xac, 0xf7, 0x1f, 0x06,
|
||||
0xba, 0x7f, 0xff, 0xee, 0xed, 0x40, 0x5f, 0xa5,
|
||||
0xd6, 0xbd, 0x8c, 0x5b, 0x46, 0xd2, 0x7e, 0x48,
|
||||
0x4a, 0x65, 0x8f, 0x08, 0x42, 0x60, 0xf7, 0x0f,
|
||||
0xb9, 0x16, 0x0b, 0x0c, 0x1a, 0x06, 0x00, 0x00,
|
||||
},
|
||||
nil
|
||||
},
|
||||
gzipTest { // has 1 non-empty fixed huffman block then garbage
|
||||
"hello.txt",
|
||||
"hello world\n",
|
||||
[]byte {
|
||||
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
||||
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
||||
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
||||
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
||||
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
|
||||
0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!',
|
||||
},
|
||||
HeaderError,
|
||||
},
|
||||
gzipTest { // has 1 non-empty fixed huffman block but corrupt checksum
|
||||
"hello.txt",
|
||||
"hello world\n",
|
||||
[]byte {
|
||||
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
||||
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
||||
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
||||
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
||||
0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x0c, 0x00,
|
||||
0x00, 0x00,
|
||||
},
|
||||
ChecksumError,
|
||||
},
|
||||
gzipTest { // has 1 non-empty fixed huffman block but corrupt size
|
||||
"hello.txt",
|
||||
"hello world\n",
|
||||
[]byte {
|
||||
0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
|
||||
0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
|
||||
0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
|
||||
0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
|
||||
0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0xff, 0x00,
|
||||
0x00, 0x00,
|
||||
},
|
||||
ChecksumError,
|
||||
},
|
||||
}
|
||||
|
||||
func TestGzipInflater(t *testing.T) {
|
||||
b := new(io.ByteBuffer);
|
||||
for i, tt := range gzipTests {
|
||||
in := io.NewByteReader(tt.gzip);
|
||||
gzip, err := NewGzipInflater(in);
|
||||
if err != nil {
|
||||
t.Errorf("%s: NewGzipInflater: %s", tt.name, err);
|
||||
continue;
|
||||
}
|
||||
if tt.name != gzip.Name {
|
||||
t.Errorf("%s: got name %s", tt.name, gzip.Name);
|
||||
}
|
||||
b.Reset();
|
||||
n, err := io.Copy(gzip, b);
|
||||
if err != tt.err {
|
||||
t.Errorf("%s: io.Copy: %s want %s", tt.name, err, tt.err);
|
||||
}
|
||||
s := string(b.Data());
|
||||
if s != tt.raw {
|
||||
t.Errorf("%s: got %d-byte %q want %d-byte %q", tt.name, n, s, len(tt.raw), tt.raw);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user