Merge pull request #341 from pratikmota/pipes-part-1

[pipes-functions]Adding sha256sum and sums functions

evaldo/builtins_pipes.go

@@ -634,6 +634,47 @@ var Builtins_pipes = map[string]*env.Builtin{
  },
  },
 
+ "sha256sum": {
+ Argsn: 1,
+ Doc: "Returns the hex-encoded SHA-256 hash of the entire contents of the pipe.",
+ Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
+ switch p := arg0.(type) {
+ case env.Native:
+ switch pipe := p.Value.(type) {
+ case *script.Pipe:
+ sha256, err := pipe.SHA256Sum()
+ if err != nil {
+ return MakeBuiltinError(ps, err.Error(), "pipes/sha256sum")
+ }
+ return *env.NewString(sha256)
+ default:
+ return MakeNativeArgError(ps, 1, []string{"script-pipe"}, "pipes/sha256sum")
+ }
+ default:
+ return MakeArgError(ps, 1, []env.Type{env.NativeType}, "pipes/sha256sum")
+ }
+ },
+ },
+
+ "sha256sums": {
+ Argsn: 1,
+ Doc: "Reads paths from the pipe, one per line, and produces the hex-encoded SHA-256 hash of each corresponding file, one per line.",
+ Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
+ switch p := arg0.(type) {
+ case env.Native:
+ switch pipe := p.Value.(type) {
+ case *script.Pipe:
+ newPipe := pipe.SHA256Sums()
+ return *env.NewNative(ps.Idx, newPipe, "script-pipe")
+ default:
+ return MakeNativeArgError(ps, 1, []string{"script-pipe"}, "pipes/sha256sums")
+ }
+ default:
+ return MakeArgError(ps, 1, []env.Type{env.NativeType}, "pipes/sha256sums")
+ }
+ },
+ },
+
  // GOPSUTIL
 
 }