87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
package helper
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import (
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"io/ioutil"
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"path"
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"strings"
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"github.com/flosch/pongo2"
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_ "github.com/flosch/pongo2-addons"
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"github.com/robertkrimen/otto"
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_ "github.com/robertkrimen/otto/underscore"
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)
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func init() {
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err := pongo2.ReplaceFilter("markdown", MarkdownFilter)
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if err != nil {
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panic(err)
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}
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}
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// MarkdownFilter is a pongo2 filter, which converts markdown to html
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func MarkdownFilter(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *pongo2.Error) {
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return pongo2.AsSafeValue(
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string(
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renderMarkdown(
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[]byte(in.String()),
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currentPathConfig.Markdown,
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))),
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nil
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}
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func RegisterFilters(dir string) {
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files, err := ioutil.ReadDir(dir)
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if err != nil {
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Log.Panicf("could not read from template filters dir '%s': %s", dir, err)
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}
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for _, f := range files {
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if !f.IsDir() {
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switch path.Ext(f.Name()) {
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case ".js":
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jsFile := dir + "/" + f.Name()
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Log.Debugf("trying to register filter from: %s", jsFile)
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jsStr, err := ioutil.ReadFile(jsFile)
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if err != nil {
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Log.Panicf("could not read '%s': %s", jsFile, err)
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}
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vm := otto.New()
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fn, err := vm.Run(jsStr)
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if err != nil {
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Log.Panicf("error in javascript vm for '%s': %s", jsFile, err)
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}
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if !fn.IsFunction() {
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Log.Panicf("%s does not contain a function code", jsFile)
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}
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err = pongo2.RegisterFilter(
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strings.TrimSuffix(f.Name(), ".js"),
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func(in, param *pongo2.Value) (out *pongo2.Value, erro *pongo2.Error) {
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thisObj, _ := vm.Object("({})")
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if currentContext != nil {
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thisObj.Set("context", *currentContext)
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}
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if err != nil {
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Log.Panicf("could not set context as in '%s': %s", jsFile, err)
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}
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ret, err := fn.Call(thisObj.Value(), in.Interface(), param.Interface())
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if err != nil {
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Log.Panicf("error in javascript file '%s' while calling returned function: %s", jsFile, err)
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}
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retGo, err := ret.Export()
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if err != nil {
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Log.Panicf("export error for '%s': %s", jsFile, err)
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}
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return pongo2.AsValue(retGo), nil
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},
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)
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if err != nil {
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Log.Panicf("could not register filter from '%s': %s", jsFile, err)
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}
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}
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}
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}
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}
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