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Added ability to exec arbitrary commands from templates. #847

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Added ability to exec arbitrary commands from templates. #847

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e404cfe
Added ability to exec arbitrary commands from templates. Naughty, I k…
aliafshar Jan 27, 2015
dac5e5f
Merge branch 'master' of https://github.com/spf13/hugo
aliafshar Jan 27, 2015
007d911
Now add the actual tempalte changes.
aliafshar Jan 27, 2015
90f60a3
Now add the actual tempalte changes.
aliafshar Jan 27, 2015
9af1d11
Remove debugging statement.
aliafshar Jan 27, 2015
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30 changes: 30 additions & 0 deletions helpers/execembed.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
package helpers

import (
"bytes"
"os/exec"

jww "github.com/spf13/jwalterweatherman"
)

func Exec(args ...string) string {
var out bytes.Buffer
var stderr bytes.Buffer
var arg []string
if len(args) == 0 {
jww.ERROR.Print("Nothing to execute")
return "Nothing to execute"
}
name := args[0]
if len(args) > 1 {
arg = args[1 : len(args)-1]
}
cmd := exec.Command(name, arg...)
cmd.Stdout = &out
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
jww.ERROR.Print("Error executing", err, stderr.String())
return stderr.String()
}
return out.String()
}
5 changes: 5 additions & 0 deletions tpl/template.go
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Original file line number Diff line number Diff line change
Expand Up @@ -831,6 +831,10 @@ func Highlight(in interface{}, lang string) template.HTML {
return template.HTML(helpers.Highlight(html.UnescapeString(str), lang))
}

func Exec(args ...string) template.HTML {
return template.HTML(helpers.Exec(args...))
}

func Markdownify(text string) template.HTML {
return template.HTML(helpers.RenderBytes(helpers.RenderingContext{Content: []byte(text), PageFmt: "markdown"}))
}
Expand Down Expand Up @@ -1275,6 +1279,7 @@ func init() {
"delimit": Delimit,
"sort": Sort,
"highlight": Highlight,
"exec": Exec,
"add": func(a, b interface{}) (interface{}, error) { return doArithmetic(a, b, '+') },
"sub": func(a, b interface{}) (interface{}, error) { return doArithmetic(a, b, '-') },
"div": func(a, b interface{}) (interface{}, error) { return doArithmetic(a, b, '/') },
Expand Down