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godoc: use a bufio.Buffer to read search index
Also: Minor refactoring for cleanliness and symmetry. Fixes #2286. R=r CC=golang-dev https://golang.org/cl/5232041
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@ -38,6 +38,7 @@
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package main
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import (
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"bufio"
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"bytes"
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"go/ast"
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"go/parser"
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@ -840,6 +841,14 @@ type fileIndex struct {
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Fulltext bool
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}
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func (x *fileIndex) Write(w io.Writer) os.Error {
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return gob.NewEncoder(w).Encode(x)
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}
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func (x *fileIndex) Read(r io.Reader) os.Error {
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return gob.NewDecoder(r).Decode(x)
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}
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// Write writes the index x to w.
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func (x *Index) Write(w io.Writer) os.Error {
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fulltext := false
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@ -852,7 +861,7 @@ func (x *Index) Write(w io.Writer) os.Error {
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x.snippets,
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fulltext,
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}
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if err := gob.NewEncoder(w).Encode(fx); err != nil {
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if err := fx.Write(w); err != nil {
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return err
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}
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if fulltext {
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@ -867,9 +876,14 @@ func (x *Index) Write(w io.Writer) os.Error {
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}
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// Read reads the index from r into x; x must not be nil.
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// If r does not also implement io.ByteReader, it will be wrapped in a bufio.Reader.
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func (x *Index) Read(r io.Reader) os.Error {
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// We use the ability to read bytes as a plausible surrogate for buffering.
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if _, ok := r.(io.ByteReader); !ok {
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r = bufio.NewReader(r)
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}
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var fx fileIndex
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if err := gob.NewDecoder(r).Decode(&fx); err != nil {
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if err := fx.Read(r); err != nil {
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return err
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}
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x.words = fx.Words
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