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https://github.com/gohugoio/hugo.git
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parent
be8c067577
commit
15463d3d45
1 changed files with 35 additions and 0 deletions
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@ -15,10 +15,13 @@ package helpers
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import (
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"bytes"
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"crypto/sha1"
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"fmt"
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"io/ioutil"
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"os/exec"
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"strings"
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"github.com/spf13/hugo/hugofs"
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jww "github.com/spf13/jwalterweatherman"
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"github.com/spf13/viper"
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)
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@ -42,6 +45,33 @@ func Highlight(code string, lexer string) string {
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return code
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}
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fs := hugofs.OsFs
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// Try to read from cache first
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hash := sha1.Sum([]byte(code))
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cachefile := fmt.Sprintf("%s/pygments-%s-%x", viper.GetString("CacheDir"), lexer, hash)
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exists, err := Exists(cachefile, fs)
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if err != nil {
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jww.ERROR.Print(err.Error())
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return code
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}
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if exists {
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f, err := fs.Open(cachefile)
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if err != nil {
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jww.ERROR.Print(err.Error())
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return code
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}
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s, err := ioutil.ReadAll(f)
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if err != nil {
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jww.ERROR.Print(err.Error())
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return code
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}
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return string(s)
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}
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// No cache file, render and cache it
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var out bytes.Buffer
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var stderr bytes.Buffer
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style := viper.GetString("PygmentsStyle")
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@ -62,5 +92,10 @@ func Highlight(code string, lexer string) string {
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return code
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}
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// Write cache file
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if err := WriteToDisk(cachefile, bytes.NewReader(out.Bytes()), fs); err != nil {
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jww.ERROR.Print(stderr.String())
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}
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return out.String()
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}
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