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Select lexer with --filename argument (#77)

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cgit's syntax highlighting filter pipes to STDIN and provides the
filename in argv; the analyzer often fails but we have access to the
original filename, so we add an optional argument to specify the
filename to use for matching a lexer when reading from STDIN; when
[files...] are provided to chroma this is completely ignored
This commit is contained in:
Douglas La Rocca 2017-10-23 21:23:43 -04:00 committed by Alec Thomas
parent 93868c5a99
commit 3d8ce90892
1 changed files with 2 additions and 1 deletions
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3
cmd/chroma/main.go
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@ -35,6 +35,7 @@ var (
unbufferedFlag = kingpin.Flag("unbuffered", "Do not buffer output.").Bool()
traceFlag = kingpin.Flag("trace", "Trace lexer states as they are traversed.").Bool()
checkFlag = kingpin.Flag("check", "Do not format, check for tokenization errors instead.").Bool()
filenameFlag = kingpin.Flag("filename", "Filename to use for selecting a lexer when reading from stdin.").String()
lexerFlag = kingpin.Flag("lexer", "Lexer to use when formatting.").PlaceHolder("autodetect").Short('l').Enum(lexers.Names(true)...)
styleFlag = kingpin.Flag("style", "Style to use for formatting.").Short('s').Default("swapoff").Enum(styles.Names()...)
@ -167,7 +168,7 @@ command, for Go.
if len(*filesArgs) == 0 {
contents, err := ioutil.ReadAll(os.Stdin)
kingpin.FatalIfError(err, "")
format(w, style, lex("", string(contents)))
format(w, style, lex(*filenameFlag, string(contents)))
} else {
for _, filename := range *filesArgs {
contents, err := ioutil.ReadFile(filename)