72 lines
1.3 KiB
Go
72 lines
1.3 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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"runtime"
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"github.com/derekparker/delve/client/cli"
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)
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const version string = "0.5.0.beta"
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var usage string = `Delve version %s
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flags:
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%s
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Invoke with the path to a binary:
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dlv ./path/to/prog
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or use the following commands:
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run - Build, run, and attach to program
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test - Build test binary, run and attach to it
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attach - Attach to running process
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`
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func init() {
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flag.Usage = help
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// We must ensure here that we are running on the same thread during
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// the execution of dbg. This is due to the fact that ptrace(2) expects
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// all commands after PTRACE_ATTACH to come from the same thread.
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runtime.LockOSThread()
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}
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func main() {
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var printv, printhelp bool
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flag.BoolVar(&printv, "v", false, "Print version number and exit.")
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flag.BoolVar(&printhelp, "h", false, "Print help text and exit.")
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flag.Parse()
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if flag.NFlag() == 0 && len(flag.Args()) == 0 {
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help()
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os.Exit(0)
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}
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if printv {
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fmt.Printf("Delve version: %s\n", version)
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os.Exit(0)
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}
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if printhelp {
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help()
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os.Exit(0)
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}
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cli.Run(os.Args[1:])
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}
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// help prints help text to os.Stderr.
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func help() {
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flags := ""
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flag.VisitAll(func(f *flag.Flag) {
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doc := fmt.Sprintf(" -%s=%s: %s\n", f.Name, f.DefValue, f.Usage)
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flags += doc
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})
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fmt.Fprintf(os.Stderr, usage, version, flags)
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}
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