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Changed CLI help display code, and added option to ignore names by regexp. #31

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Changed CLI help display code, and added option to ignore names by regexp. #31

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abf543d
Support a --bin argument for path to binary
lox Apr 15, 2017
8892443
Use more descriptive help message and library-supported way to print it.
adhihargo Sep 25, 2017
4727439
Add -ignore option, accepting regexp of filenames to ignore. Fixes #15
adhihargo Sep 25, 2017
759a5d9
Applied gofmt
adhihargo Sep 26, 2017
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28 changes: 24 additions & 4 deletions rerun.go
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Original file line number Diff line number Diff line change
Expand Up @@ -9,20 +9,24 @@ import (
"errors"
"flag"
"fmt"
"github.com/howeyc/fsnotify"
"go/build"
"log"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"

"github.com/howeyc/fsnotify"
)

var (
do_tests = flag.Bool("test", false, "Run tests (before running program)")
do_build = flag.Bool("build", false, "Build program")
never_run = flag.Bool("no-run", false, "Do not run")
race_detector = flag.Bool("race", false, "Run program and tests with the race detector")
build_bin = flag.String("bin", "", "Provide a specific path for the build binary")
ignore_re_str = flag.String("ignore", "", "Regexp pattern of filenames to ignore")
)

func install(buildpath, lastError string) (installed bool, errorOutput string, err error) {
Expand Down Expand Up @@ -83,11 +87,16 @@ func test(buildpath string) (passed bool, err error) {
}

func gobuild(buildpath string) (passed bool, err error) {
cmdline := []string{"go", "build"}
cmdline := []string{"go", "build", "-i"}

if *race_detector {
cmdline = append(cmdline, "-race")
}

if *build_bin != "" {
cmdline = append(cmdline, "-o", *build_bin)
}

cmdline = append(cmdline, "-v", buildpath)

// setup the build command, use a shared buffer for both stdOut and stdErr
Expand Down Expand Up @@ -212,11 +221,17 @@ func rerun(buildpath string, args []string) (err error) {
return
}

// construct regexp obj, unused on error (assuming Compile returns nil if so).
var ignoreRe *regexp.Regexp
ignoreRe, err = regexp.Compile(*ignore_re_str)
if err != nil {
log.Print(err)
}
for {
// read event from the watcher
we, _ := <-watcher.Event
// other files in the directory don't count - we watch the whole thing in case new .go files appear.
if filepath.Ext(we.Name) != ".go" {
if fn := filepath.Base(we.Name); (ignoreRe != nil && ignoreRe.FindString(fn) != "") || filepath.Ext(fn) != ".go" {
continue
}

Expand Down Expand Up @@ -272,10 +287,15 @@ func rerun(buildpath string, args []string) (err error) {
}

func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s [OPTIONS] IMPORT_PATH [ARGS]\nOptions:\n", os.Args[0])
flag.PrintDefaults()
}
flag.Parse()

if len(flag.Args()) < 1 {
log.Fatal("Usage: rerun [--test] [--no-run] [--build] [--race] <import path> [arg]*")
flag.Usage()
os.Exit(1)
}

buildpath := flag.Args()[0]
Expand Down