mirror of
https://github.com/1f349/violet.git
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37 lines
891 B
Go
37 lines
891 B
Go
package favicons
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import (
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"bytes"
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"fmt"
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"os/exec"
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)
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// svg2png takes an input inkscape binary path and svg image bytes and outputs
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// the png image bytes or an error.
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func svg2png(inkscapeCmd string, in []byte) (out []byte, err error) {
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// create stdout and stderr buffers
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var stdout, stderr bytes.Buffer
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// prepare inkscape command and attach buffers
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cmd := exec.Command(inkscapeCmd, "--export-type", "png", "--export-filename", "-", "--export-background-opacity", "0", "--pipe")
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cmd.Stdin = bytes.NewBuffer(in)
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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// run the command and return errors
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if e := cmd.Run(); e != nil {
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err = fmt.Errorf("%s\nSTDERR:\n%s", e.Error(), stderr.String())
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return
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}
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// error if there is no output
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if stdout.Len() == 0 {
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err = fmt.Errorf("got no data from inkscape")
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return
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}
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// return the raw bytes
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out = stdout.Bytes()
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return
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}
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