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// Copyright (c) 2018 Cisco and/or its affiliates.
//
// 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 (
"flag"
"fmt"
"os"
"path/filepath"
"strings"
"unicode"
"github.com/sirupsen/logrus"
"go.fd.io/govpp/binapigen"
"go.fd.io/govpp/binapigen/vppapi"
"go.fd.io/govpp/version"
)
func init() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "USAGE\n")
fmt.Fprintf(os.Stderr, " Parse API_FILES and generate Go bindings\n")
fmt.Fprintf(os.Stderr, " Provide API_FILES by file name, or with full path including extension.\n")
fmt.Fprintf(os.Stderr, " %s [OPTION] API_FILES\n\n", os.Args[0])
fmt.Fprintf(os.Stderr, "OPTIONS\n")
flag.PrintDefaults()
fmt.Fprintf(os.Stderr, "\nEXAMPLES:\n")
fmt.Fprintf(os.Stderr, " %s \\\n", os.Args[0])
fmt.Fprintf(os.Stderr, " --input-dir=$VPP/build-root/install-vpp-native/vpp/share/vpp/api/ \\\n")
fmt.Fprintf(os.Stderr, " --output-dir=~/output \\\n")
fmt.Fprintf(os.Stderr, " interface ip\n")
fmt.Fprintf(os.Stderr, " Assuming --input-dir contains interface.api.json & ip.api.json\n")
}
}
func printErrorAndExit(msg string) {
fmt.Fprintf(os.Stderr, "Error: %s\n\n", msg)
flag.Usage()
os.Exit(1)
}
func main() {
var (
theApiDir = flag.String("input-dir", vppapi.DefaultDir, "Input directory containing API files. (e.g. )")
theOutputDir = flag.String("output-dir", "binapi", "Output directory where code will be generated.")
importPrefix = flag.String("import-prefix", "", "Prefix imports in the generated go code. \nE.g. other API Files (e.g. api_file.ba.go) will be imported with :\nimport (\n api_file \"<import-prefix>/api_file\"\n)")
generatorPlugins = flag.String("gen", "rpc", "List of generator plugins to run for files.")
theInputFile = flag.String("input-file", "", "DEPRECATED: Use program arguments to define files to generate.")
printVersion = flag.Bool("version", false, "Prints version and exits.")
debugLog = flag.Bool("debug", false, "Enable verbose logging.")
noVersionInfo = flag.Bool("no-version-info", false, "Disable version info in generated files.")
noSourcePathInfo = flag.Bool("no-source-path-info", false, "Disable source path info in generated files.")
)
flag.Parse()
if *printVersion {
fmt.Fprintln(os.Stdout, version.Info())
os.Exit(0)
}
if *debugLog {
logrus.SetLevel(logrus.DebugLevel)
}
var filesToGenerate []string
if *theInputFile != "" {
if flag.NArg() > 0 {
printErrorAndExit("input-file cannot be combined with files to generate in arguments")
}
filesToGenerate = append(filesToGenerate, *theInputFile)
} else {
filesToGenerate = append(filesToGenerate, flag.Args()...)
}
opts := binapigen.Options{
ImportPrefix: *importPrefix,
OutputDir: *theOutputDir,
NoVersionInfo: *noVersionInfo,
NoSourcePathInfo: *noSourcePathInfo,
}
if opts.OutputDir == "binapi" {
if wd, _ := os.Getwd(); filepath.Base(wd) == "binapi" {
opts.OutputDir = "."
}
}
apiDir := *theApiDir
genPlugins := strings.FieldsFunc(*generatorPlugins, func(c rune) bool {
return !unicode.IsLetter(c) && !unicode.IsNumber(c)
})
binapigen.Run(apiDir, filesToGenerate, opts, func(gen *binapigen.Generator) error {
for _, file := range gen.Files {
if !file.Generate {
continue
}
binapigen.GenerateAPI(gen, file)
for _, p := range genPlugins {
if err := binapigen.RunPlugin(p, gen, file); err != nil {
return err
}
}
}
return nil
})
}
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