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authorChris Lu <chris.lu@gmail.com>2013-02-10 03:49:51 -0800
committerChris Lu <chris.lu@gmail.com>2013-02-10 03:49:51 -0800
commit5071f528f649f3f99336c7d491ceef4859e34744 (patch)
tree0c4bc8a286597cd79e22b1ce02cd9cd3b1c44602 /go/storage/compress.go
parent55f2627fcf965c3765ad9b63878e9a22a59f4b55 (diff)
downloadseaweedfs-5071f528f649f3f99336c7d491ceef4859e34744.tar.xz
seaweedfs-5071f528f649f3f99336c7d491ceef4859e34744.zip
testing compilation with remove package
Diffstat (limited to 'go/storage/compress.go')
-rw-r--r--go/storage/compress.go57
1 files changed, 57 insertions, 0 deletions
diff --git a/go/storage/compress.go b/go/storage/compress.go
new file mode 100644
index 000000000..256789c9c
--- /dev/null
+++ b/go/storage/compress.go
@@ -0,0 +1,57 @@
+package storage
+
+import (
+ "bytes"
+ "compress/flate"
+ "compress/gzip"
+ "io/ioutil"
+ "strings"
+)
+
+/*
+* Default more not to gzip since gzip can be done on client side.
+*/
+func IsGzippable(ext, mtype string) bool {
+ if strings.HasPrefix(mtype, "text/") {
+ return true
+ }
+ switch ext {
+ case ".zip", ".rar", ".gz", ".bz2", ".xz":
+ return false
+ case ".pdf", ".txt", ".html", ".css", ".js", ".json":
+ return true
+ }
+ if strings.HasPrefix(mtype, "application/") {
+ if strings.HasSuffix(mtype, "xml") {
+ return true
+ }
+ if strings.HasSuffix(mtype, "script") {
+ return true
+ }
+ }
+ return false
+}
+
+func GzipData(input []byte) ([]byte, error) {
+ buf := new(bytes.Buffer)
+ w, _ := gzip.NewWriterLevel(buf, flate.BestCompression)
+ if _, err := w.Write(input); err != nil {
+ println("error compressing data:", err)
+ return nil, err
+ }
+ if err := w.Close(); err != nil {
+ println("error closing compressed data:", err)
+ return nil, err
+ }
+ return buf.Bytes(), nil
+}
+func UnGzipData(input []byte) ([]byte, error) {
+ buf := bytes.NewBuffer(input)
+ r, _ := gzip.NewReader(buf)
+ defer r.Close()
+ output, err := ioutil.ReadAll(r)
+ if err != nil {
+ println("error uncompressing data:", err)
+ }
+ return output, err
+}