forked from clipperhouse/gen
/
run.go
91 lines (68 loc) · 1.96 KB
/
run.go
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package main
import (
"fmt"
"os"
"github.com/clipperhouse/typewriter"
)
func run(c config) error {
imports := typewriter.NewImportSpecSet(
typewriter.ImportSpec{Path: "fmt"},
typewriter.ImportSpec{Path: "os"},
typewriter.ImportSpec{Path: "github.com/clipperhouse/typewriter"},
)
return execute(runStandard, c, imports, runBody)
}
func runStandard() (err error) {
app, err := typewriter.NewApp("+gen")
if err != nil {
return err
}
if len(app.Packages) == 0 {
return fmt.Errorf("No packages were found. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
found := false
for _, p := range app.Packages {
found = found || len(p.Types) > 0
}
if !found {
return fmt.Errorf("No types marked with +gen were found. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
if len(app.TypeWriters) == 0 {
return fmt.Errorf("No typewriters were imported. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
if _, err := app.WriteAll(); err != nil {
return err
}
return nil
}
const runBody string = `
func main() {
if err := gen(); err != nil {
os.Stderr.WriteString(err.Error() + "\n")
os.Exit(1)
}
}
func gen() error {
app, err := typewriter.NewApp("+gen")
if err != nil {
return err
}
if len(app.Packages) == 0 {
return fmt.Errorf("No packages were found. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
found := false
for _, p := range app.Packages {
found = found || len(p.Types) > 0
}
if !found {
return fmt.Errorf("No types marked with +gen were found. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
if len(app.TypeWriters) == 0 {
return fmt.Errorf("No typewriters were imported. See http://clipperhouse.github.io/gen to get started, or type %s help.", os.Args[0])
}
if _, err := app.WriteAll(); err != nil {
return err
}
return nil
}
`