llcppg

chore/llcppg/llcppg.go

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+
+	"github.com/goplus/llgo/chore/llcppg/types"
+	"github.com/goplus/llgo/xtool/env"
+)
+
+func llcppsymg(conf []byte) error {
+	cmd := exec.Command("llcppsymg", "-")
+	cmd.Stdin = bytes.NewReader(conf)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func llcppsigfetch(conf []byte, out io.Writer) {
+	cmd := exec.Command("llcppsigfetch", "-")
+	cmd.Stdin = bytes.NewReader(conf)
+	cmd.Stdout = out
+	cmd.Stderr = os.Stderr
+	err := cmd.Run()
+	check(err)
+}
+
+func gogensig(in io.Reader) error {
+	cmd := exec.Command("gogensig")
+	cmd.Stdin = in
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func main() {
+	cfgFile := "llcppg.cfg"
+	if len(os.Args) > 1 {
+		cfgFile = os.Args[1]
+	}
+	if cfgFile == "-h" || cfgFile == "--help" {
+		fmt.Fprintln(os.Stderr, "Usage: llcppg [config-file]")
+		return
+	}
+
+	f, err := os.Open(cfgFile)
+	check(err)
+	defer f.Close()
+
+	var conf types.Config
+	json.NewDecoder(f).Decode(&conf)
+	conf.CFlags = env.ExpandEnv(conf.CFlags)
+	conf.Libs = env.ExpandEnv(conf.Libs)
+
+	b, err := json.MarshalIndent(&conf, "", "  ")
+	check(err)
+
+	err = llcppsymg(b)
+	check(err)
+
+	r, w := io.Pipe()
+	go llcppsigfetch(b, w)
+
+	err = gogensig(r)
+	check(err)
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}