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main.go
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main.go
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package main
import (
"flag"
"github.com/VerTox/graphql-codegen-go/internal"
"github.com/pkg/errors"
"os"
"strings"
)
func initConfig() internal.Config {
var config internal.Config
configYaml := flag.String("config", "", "config yaml")
schemasFile := flag.String("schemas", "", "schema file (comma separated list)")
entitiesString := flag.String("entities", "", "comma separated list of entities (optional)")
packageNameString := flag.String("packageName", "", "package name")
outFile := flag.String("out", "", "file output name (optional, default: stdout)")
flag.Parse()
if configYaml != nil && *configYaml != "" {
configFile, err := os.Open(*configYaml)
if err != nil {
panic(err)
}
defer configFile.Close()
yc, err := internal.ReadConfigFromFile(configFile)
if err != nil {
panic(err)
}
config = yc
} else {
goGenerateDate := internal.GetGOGenerate()
var entities []string
if *entitiesString != "" {
entities = strings.Split(*entitiesString, ",")
}
var pkgName *string
if goGenerateDate != nil {
pkgName = &goGenerateDate.GOPackage
}
if packageNameString != nil && *packageNameString != "" {
pkgName = packageNameString
}
if pkgName == nil {
flag.Usage()
panic("packageName not defined")
}
config = internal.Config{
Schemas: strings.Split(*schemasFile, ","),
Outputs: []internal.OutputItem{
{OutputPath: *outFile, PackageName: *pkgName, Entities: entities},
},
}
}
return config
}
func main() {
config := initConfig()
// Combine all schemas.
inputSchemas, err := internal.ReadSchemas(config.Schemas)
if err != nil {
panic(err)
}
for _, o := range config.Outputs {
output, err := internal.NewFileOutput(o.OutputPath)
if err != nil {
panic(errors.Wrapf(err, "failed to create output to %s", o.OutputPath))
}
loadedDocs, err := internal.LoadSchemas(inputSchemas)
if err != nil {
panic(errors.Wrapf(err, "failed to parse input schemas"))
}
gen := internal.NewGoGenerator(output, o.Entities, o.PackageName)
if err := gen.Generate(loadedDocs); err != nil {
panic(errors.Wrapf(err, "failed to generate go structs"))
}
if err := output.Close(); err != nil {
panic(err)
}
}
}