oef/template_generator/main.go
2019-11-14 15:04:11 +01:00

151 lines
3.3 KiB
Go

package main
import (
"flag"
"fmt"
"log"
"os"
"path/filepath"
"strings"
"text/template"
tpl_util "git.andreafazzi.eu/andrea/oef/util/template"
"github.com/jinzhu/inflection"
)
var (
fnTemplatePatterns = map[string]string{
"all": "%s",
"show": "%s_show",
"add_update": "%s_add_update",
}
fnModelPatterns = map[string]string{
"model": "%s",
}
TemplateInputDir string
TemplateOutputDir string
ModelInputDir string
ModelOutputDir string
)
func toUpper(str string) string {
return strings.Title(str)
}
func toLower(str string) string {
return strings.ToLower(str)
}
func generateTemplates(patterns map[string]string, model string, funcMap ...template.FuncMap) error {
for tplName, pattern := range patterns {
var data struct {
Model string
Models string
}
data.Model = inflection.Singular(model)
data.Models = inflection.Plural(model)
name := fmt.Sprintf(pattern, strings.ToLower(data.Models))
tpl, err := tpl_util.LoadTextTemplate(filepath.Join(TemplateInputDir, tplName+".tpl"), funcMap...)
if err != nil {
panic(err)
}
filename := filepath.Join(TemplateOutputDir, name+".html.tpl")
if _, err := os.Stat(filename); err != nil {
oFn, err := os.Create(filename)
if err != nil {
panic(err)
}
defer oFn.Close()
log.Printf("Generating html template %s for model %s...", filename, name)
err = tpl.Execute(oFn, data)
if err != nil {
panic(err)
}
} else {
log.Printf("Template %s already exists. Skipping.", filename)
}
}
return nil
}
func generateModels(patterns map[string]string, model string, funcMap ...template.FuncMap) error {
for tplName, pattern := range patterns {
var data struct {
Model string
Models string
}
data.Model = inflection.Singular(model)
data.Models = inflection.Plural(model)
name := fmt.Sprintf(pattern, strings.ToLower(data.Model))
tpl, err := tpl_util.LoadTextTemplate(filepath.Join(ModelInputDir, tplName+".tpl"), funcMap...)
if err != nil {
panic(err)
}
filename := filepath.Join(ModelOutputDir, name+".go")
if _, err := os.Stat(filename); err != nil {
oFn, err := os.Create(filename)
if err != nil {
panic(err)
}
defer oFn.Close()
log.Printf("Generating model go file %s for model %s...", filename, name)
err = tpl.Execute(oFn, data)
if err != nil {
panic(err)
}
} else {
log.Printf("Model file %s already exists. Skipping.", filename)
}
}
return nil
}
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
flag.PrintDefaults()
}
TemplateOutputDir = *flag.String("tpl-output-dir", "./templates", "Template output directory")
TemplateInputDir = *flag.String("tpl-input-dir", "./template_generator/templates", "Generator template directory")
ModelOutputDir = *flag.String("model-output-dir", "./orm", "ORM output directory")
ModelInputDir = *flag.String("model-input-dir", "./template_generator/orm", "Generator ORM template directory")
flag.Parse()
if len(flag.Args()) == 0 {
flag.Usage()
return
}
funcMap := template.FuncMap{
"toUpper": toUpper,
"toLower": toLower,
}
model := flag.Args()[0]
if err := generateTemplates(fnTemplatePatterns, model, funcMap); err != nil {
panic(err)
}
if err := generateModels(fnModelPatterns, model, funcMap); err != nil {
panic(err)
}
}