package main
import (
- "bytes"
- "encoding/json"
"flag"
"fmt"
- "io/ioutil"
"os"
- "os/exec"
"path/filepath"
"strings"
+ "unicode"
- "github.com/bennyscetbun/jsongo"
"github.com/sirupsen/logrus"
-)
-
-var (
- theInputFile = flag.String("input-file", "", "Input file with VPP API in JSON format.")
- theInputDir = flag.String("input-dir", "/usr/share/vpp/api", "Input directory with VPP API files in JSON format.")
- theOutputDir = flag.String("output-dir", ".", "Output directory where package folders will be generated.")
-
- includeAPIVer = flag.Bool("include-apiver", true, "Include APIVersion constant for each module.")
- includeServices = flag.Bool("include-services", true, "Include RPC service api and client implementation.")
- includeComments = flag.Bool("include-comments", false, "Include JSON API source in comments for each object.")
- includeBinapiNames = flag.Bool("include-binapi-names", false, "Include binary API names in struct tag.")
- continueOnError = flag.Bool("continue-onerror", false, "Continue with next file on error.")
-
- debug = flag.Bool("debug", debugMode, "Enable debug mode.")
+ "git.fd.io/govpp.git/binapigen"
+ "git.fd.io/govpp.git/binapigen/vppapi"
+ "git.fd.io/govpp.git/version"
)
-var debugMode = os.Getenv("DEBUG_BINAPI_GENERATOR") != ""
+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 *debug {
- logrus.SetLevel(logrus.DebugLevel)
- }
- if err := run(*theInputFile, *theInputDir, *theOutputDir, *continueOnError); err != nil {
- logrus.Errorln("binapi-generator:", err)
- os.Exit(1)
+ if *printVersion {
+ fmt.Fprintln(os.Stdout, version.Info())
+ os.Exit(0)
}
-}
-func run(inputFile, inputDir string, outputDir string, continueErr bool) error {
- if inputFile == "" && inputDir == "" {
- return fmt.Errorf("input-file or input-dir must be specified")
+ if *debugLog {
+ logrus.SetLevel(logrus.DebugLevel)
}
- if inputFile != "" {
- // process one input file
- if err := generateFromFile(inputFile, outputDir); err != nil {
- return fmt.Errorf("code generation from %s failed: %v\n", inputFile, err)
+ 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 {
- // process all files in specified directory
- dir, err := filepath.Abs(inputDir)
- if err != nil {
- return fmt.Errorf("invalid input directory: %v\n", err)
- }
- files, err := getInputFiles(inputDir, 1)
- if err != nil {
- return fmt.Errorf("problem getting files from input directory: %v\n", err)
- } else if len(files) == 0 {
- return fmt.Errorf("no input files found in input directory: %v\n", dir)
- }
- for _, file := range files {
- if err := generateFromFile(file, outputDir); err != nil {
- if continueErr {
- logrus.Warnf("code generation from %s failed: %v (error ignored)\n", file, err)
- continue
- } else {
- return fmt.Errorf("code generation from %s failed: %v\n", file, err)
- }
- }
- }
+ filesToGenerate = append(filesToGenerate, flag.Args()...)
}
- return nil
-}
-
-// getInputFiles returns all input files located in specified directory
-func getInputFiles(inputDir string, deep int) (files []string, err error) {
- entries, err := ioutil.ReadDir(inputDir)
- if err != nil {
- return nil, fmt.Errorf("reading directory %s failed: %v", inputDir, err)
+ opts := binapigen.Options{
+ ImportPrefix: *importPrefix,
+ OutputDir: *theOutputDir,
+ NoVersionInfo: *noVersionInfo,
+ NoSourcePathInfo: *noSourcePathInfo,
}
- for _, e := range entries {
- if e.IsDir() && deep > 0 {
- nestedDir := filepath.Join(inputDir, e.Name())
- if nested, err := getInputFiles(nestedDir, deep-1); err != nil {
- return nil, err
- } else {
- files = append(files, nested...)
- }
- } else if strings.HasSuffix(e.Name(), inputFileExt) {
- files = append(files, filepath.Join(inputDir, e.Name()))
+ if opts.OutputDir == "binapi" {
+ if wd, _ := os.Getwd(); filepath.Base(wd) == "binapi" {
+ opts.OutputDir = "."
}
}
- return files, nil
-}
-
-// generateFromFile generates Go package from one input JSON file
-func generateFromFile(inputFile, outputDir string) error {
- // create generator context
- ctx, err := newContext(inputFile, outputDir)
- if err != nil {
- return err
- }
-
- logf("------------------------------------------------------------")
- logf("module: %s", ctx.moduleName)
- logf(" - input: %s", ctx.inputFile)
- logf(" - output: %s", ctx.outputFile)
- logf("------------------------------------------------------------")
-
- // prepare options
- ctx.includeAPIVersion = *includeAPIVer
- ctx.includeComments = *includeComments
- ctx.includeBinapiNames = *includeBinapiNames
- ctx.includeServices = *includeServices
-
- // read API definition from input file
- ctx.inputData, err = ioutil.ReadFile(ctx.inputFile)
- if err != nil {
- return fmt.Errorf("reading input file %s failed: %v", ctx.inputFile, err)
- }
- // parse JSON data into objects
- jsonRoot := new(jsongo.JSONNode)
- if err := json.Unmarshal(ctx.inputData, jsonRoot); err != nil {
- return fmt.Errorf("unmarshalling JSON failed: %v", err)
- }
- ctx.packageData, err = parsePackage(ctx, jsonRoot)
- if err != nil {
- return fmt.Errorf("parsing package %s failed: %v", ctx.packageName, err)
- }
-
- // generate Go package code
- var buf bytes.Buffer
- if err := generatePackage(ctx, &buf); err != nil {
- return fmt.Errorf("generating code for package %s failed: %v", ctx.packageName, err)
- }
-
- // create output directory
- packageDir := filepath.Dir(ctx.outputFile)
- if err := os.MkdirAll(packageDir, 0775); err != nil {
- return fmt.Errorf("creating output dir %s failed: %v", packageDir, err)
- }
- // write generated code to output file
- if err := ioutil.WriteFile(ctx.outputFile, buf.Bytes(), 0666); err != nil {
- return fmt.Errorf("writing to output file %s failed: %v", ctx.outputFile, err)
- }
-
- // go format the output file (fail probably means the output is not compilable)
- cmd := exec.Command("gofmt", "-w", ctx.outputFile)
- if output, err := cmd.CombinedOutput(); err != nil {
- return fmt.Errorf("gofmt failed: %v\n%s", err, string(output))
- }
-
- return nil
-}
-
-func logf(f string, v ...interface{}) {
- if *debug {
- logrus.Debugf(f, v...)
- }
+ 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
+ })
}
Code Review / govpp.git / blobdiff