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main.go
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main.go
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package main
import (
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"path/filepath"
"github.com/vvakame/metago"
)
var (
verbose = flag.Bool("v", false, "show verbose message")
)
func main() {
flag.Parse()
args := flag.CommandLine.Args()
if len(args) == 0 {
log.Fatalf("1 argument must required")
}
p, err := metago.NewProcessor()
if err != nil {
panic(err)
}
result, err := p.Process(&metago.Config{
TargetPackages: args,
})
if err != nil {
if result != nil {
for _, err := range result.CompileErrors {
_, _ = fmt.Fprintln(os.Stderr, err.Error())
}
} else {
_, _ = fmt.Fprintln(os.Stderr, err.Error())
}
os.Exit(1)
}
var shouldErrorExit bool
for _, fileResult := range result.Results {
var fileHasError bool
for _, nErr := range fileResult.Errors {
switch nErr.ErrorLevel {
case metago.ErrorLevelError, metago.ErrorLevelWarning:
shouldErrorExit = true
fileHasError = true
_, _ = fmt.Fprintln(os.Stderr, nErr.Error())
case metago.ErrorLevelNotice:
_, _ = fmt.Fprintln(os.Stderr, nErr.Error())
case metago.ErrorLevelDebug:
if *verbose {
_, _ = fmt.Fprintln(os.Stderr, nErr.Error())
}
}
}
if !fileHasError && fileResult.GeneratedCode != "" {
if *verbose {
var generatedFilePath string
if cwd, err := os.Getwd(); err != nil {
generatedFilePath = fileResult.GeneratedFilePath
} else if p, err := filepath.Rel(cwd, fileResult.GeneratedFilePath); err != nil {
generatedFilePath = fileResult.GeneratedFilePath
} else {
generatedFilePath = p
}
_, _ = fmt.Fprintf(os.Stderr, "generate %s\n", generatedFilePath)
}
err := ioutil.WriteFile(fileResult.GeneratedFilePath, []byte(fileResult.GeneratedCode), 0644)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "error on write file %s: %s", fileResult.GeneratedFilePath, err.Error())
}
}
}
if shouldErrorExit {
os.Exit(1)
}
}