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author | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2019-08-16 16:55:03 +0300 |
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committer | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2019-11-06 21:09:08 +0300 |
commit | 5f6b6ec68936ebbbf590894c02a1a3ecad30735f (patch) | |
tree | f6c91e225a3f24f51af1bde5cfb5b88515d0665d /markup/internal/external.go | |
parent | 366ee4d8da1c2b0c1751e9bf6d54638439735296 (diff) |
Prepare for Goldmark
This commmit prepares for the addition of Goldmark as the new Markdown renderer in Hugo.
This introduces a new `markup` package with some common interfaces and each implementation in its own package.
See #5963
Diffstat (limited to 'markup/internal/external.go')
-rw-r--r-- | markup/internal/external.go | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/markup/internal/external.go b/markup/internal/external.go new file mode 100644 index 000000000..2105e7cff --- /dev/null +++ b/markup/internal/external.go @@ -0,0 +1,52 @@ +package internal + +import ( + "bytes" + "os/exec" + "strings" + + "github.com/gohugoio/hugo/markup/converter" +) + +func ExternallyRenderContent( + cfg converter.ProviderConfig, + ctx converter.DocumentContext, + content []byte, path string, args []string) []byte { + + logger := cfg.Logger + cmd := exec.Command(path, args...) + cmd.Stdin = bytes.NewReader(content) + var out, cmderr bytes.Buffer + cmd.Stdout = &out + cmd.Stderr = &cmderr + err := cmd.Run() + // Most external helpers exit w/ non-zero exit code only if severe, i.e. + // halting errors occurred. -> log stderr output regardless of state of err + for _, item := range strings.Split(cmderr.String(), "\n") { + item := strings.TrimSpace(item) + if item != "" { + logger.ERROR.Printf("%s: %s", ctx.DocumentName, item) + } + } + if err != nil { + logger.ERROR.Printf("%s rendering %s: %v", path, ctx.DocumentName, err) + } + + return normalizeExternalHelperLineFeeds(out.Bytes()) +} + +// Strips carriage returns from third-party / external processes (useful for Windows) +func normalizeExternalHelperLineFeeds(content []byte) []byte { + return bytes.Replace(content, []byte("\r"), []byte(""), -1) +} + +func GetPythonExecPath() string { + path, err := exec.LookPath("python") + if err != nil { + path, err = exec.LookPath("python.exe") + if err != nil { + return "" + } + } + return path +} |