144 lines
3.2 KiB
Go
144 lines
3.2 KiB
Go
package main
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import (
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"errors"
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"flag"
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"text/template"
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"time"
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"git.milar.in/milarin/channel"
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)
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// globals
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var (
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OutputFileTmpl = template.New("output-file")
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ModulePath string
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ProjectName string
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// meta data for executables
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VersionTag string
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CommitHash string
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BuildTime string
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Runner channel.Runner
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MaxConfigStringLength int
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)
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// command line arguments default values
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var (
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DefaultOutputDir = "output"
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DefaultOutputFile = "{{.Name}}-{{.OS}}-{{.Arch}}{{.Ext}}"
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DefaultOS = ""
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DefaultArch = ""
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DefaultSilent = false
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DefaultNoCompress = false
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DefaultNumThreads = runtime.NumCPU()
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DefaultKeepDebugFlags = false
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)
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// command line arguments
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var (
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OutputDir = flag.String("o", DefaultOutputDir, "output directory")
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OutputFile = flag.String("f", DefaultOutputFile, "go template for filenames")
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OS = flag.String("os", DefaultOS, "comma-separated list of operating systems to compile for (empty for all)")
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Arch = flag.String("arch", DefaultArch, "comma-separated list of architectures to compile for (empty for all)")
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Silent = flag.Bool("s", DefaultSilent, "silent mode (no output)")
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NoCompress = flag.Bool("c", DefaultNoCompress, "dont compress any executables")
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NumThreads = flag.Int("t", DefaultNumThreads, "amount of threads (0 = infinite)")
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KeepDebugFlags = flag.Bool("d", DefaultKeepDebugFlags, "keep debug flags")
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SaveConfigFile = flag.Bool("saveconfig", false, "save config file with current configuration and exit")
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IgnoreConfigFile = flag.Bool("ignoreconfig", false, "dont read any config file")
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FindConfigFile = flag.Bool("findconfig", false, "print config file path and exit")
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ShowVersion = flag.Bool("v", false, "show version and exit")
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)
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func main() {
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Init()
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GatherMetaData()
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ch := make(chan *CompileReport, len(CompileConfigs))
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wg := new(sync.WaitGroup)
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doneCh := make(chan struct{})
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go Watch(ch, doneCh)
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Runner = GetRunner()
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start := time.Now()
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for _, cfg := range CompileConfigs {
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cfg := cfg
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wg.Add(1)
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go Runner.Run(func() { Compile(cfg, ch, wg) })
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}
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wg.Wait()
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close(ch)
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end := time.Now()
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<-doneCh // wait for Watch routine
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if !*Silent {
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fmt.Printf("compilation took %s (using %s threads)\n", end.Sub(start).Truncate(time.Second/100), GetThreadCountString())
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}
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}
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func DetermineProjectName() error {
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data, err := os.ReadFile(filepath.Join(ModulePath, "go.mod"))
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if err != nil {
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return err
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}
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for _, line := range strings.Split(string(data), "\n") {
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if strings.HasPrefix(line, "module ") {
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fullName := strings.TrimPrefix(line, "module ")
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parts := strings.Split(fullName, "/")
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ProjectName = parts[len(parts)-1]
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return nil
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}
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}
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return errors.New("malformed syntax in go.mod file")
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}
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func GetRunner() channel.Runner {
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if *NumThreads <= 0 {
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return channel.NewUnlimitedRunner()
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} else {
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return channel.NewLimitedRunner(*NumThreads)
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}
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}
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func GetThreadCountString() string {
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if *NumThreads == 0 {
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return "infinitely many"
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}
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return strconv.Itoa(*NumThreads)
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}
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func CheckDirWritable(dir string) error {
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path := filepath.Join(*OutputDir, ".gocc")
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file, err := os.Create(path)
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if err != nil {
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return err
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}
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file.Close()
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os.Remove(path)
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return nil
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}
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