64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
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// Package browser provides helpers to open files, readers, and urls in a browser window.
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//
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// The choice of which browser is started is entirely client dependant.
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package browser
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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)
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// Stdout is the io.Writer to which executed commands write standard output.
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var Stdout io.Writer = os.Stdout
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// Stderr is the io.Writer to which executed commands write standard error.
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var Stderr io.Writer = os.Stderr
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// OpenFile opens new browser window for the file path.
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func OpenFile(path string) error {
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path, err := filepath.Abs(path)
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if err != nil {
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return err
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}
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return OpenURL("file://" + path)
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}
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// OpenReader consumes the contents of r and presents the
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// results in a new browser window.
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func OpenReader(r io.Reader) error {
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f, err := ioutil.TempFile("", "browser")
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if err != nil {
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return fmt.Errorf("browser: could not create temporary file: %v", err)
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}
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if _, err := io.Copy(f, r); err != nil {
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f.Close()
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return fmt.Errorf("browser: caching temporary file failed: %v", err)
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}
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if err := f.Close(); err != nil {
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return fmt.Errorf("browser: caching temporary file failed: %v", err)
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}
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oldname := f.Name()
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newname := oldname + ".html"
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if err := os.Rename(oldname, newname); err != nil {
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return fmt.Errorf("browser: renaming temporary file failed: %v", err)
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}
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return OpenFile(newname)
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}
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// OpenURL opens a new browser window pointing to url.
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func OpenURL(url string) error {
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return openBrowser(url)
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}
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func runCmd(prog string, args ...string) error {
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cmd := exec.Command(prog, args...)
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cmd.Stdout = Stdout
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cmd.Stderr = Stderr
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setFlags(cmd)
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return cmd.Run()
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}
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