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templates.go
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/
templates.go
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package main
import (
"errors"
"os"
"path"
"text/template"
"github.com/Masterminds/sprig/v3"
)
func createTemplate(name string) *template.Template {
return template.New(name).Funcs(sprig.TxtFuncMap())
}
func GetTemplate(config *Config, name string) *template.Template {
path_ := path.Join(config.TemplateDir, name)
meta, err := os.Stat(path_)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
logger.SetOutput(os.Stderr)
logger.Errorf("Template does not exist (%v)", path_)
logger.SetOutput(os.Stdout)
return nil
}
check(err)
}
if meta.IsDir() {
rootPath := path.Join(path_, config.TemplateRootFile)
meta, err := os.Stat(rootPath)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
logger.SetOutput(os.Stderr)
logger.Errorf("Template does not have a root file (%v)", rootPath)
logger.SetOutput(os.Stdout)
return nil
}
check(err)
}
if meta.IsDir() {
logger.SetOutput(os.Stderr)
logger.Errorf("Template root is a directory (%v)", rootPath)
logger.SetOutput(os.Stdout)
return nil
}
logger.Debugf("Found template root (%v)", rootPath)
paths := []string{}
files, err := os.ReadDir(path_)
check(err)
for _, file := range files {
filePath := path.Join(path_, file.Name())
if file.IsDir() {
logger.SetOutput(os.Stderr)
logger.Errorf("Template contains a directory (%v)", filePath)
logger.SetOutput(os.Stdout)
return nil
}
paths = append(paths, filePath)
logger.Debugf("Found template file (%v)", filePath)
}
tmpl, err := createTemplate(config.TemplateRootFile).
ParseFiles(paths...)
if err != nil {
logger.SetOutput(os.Stderr)
logger.Errorf("Template contains errors (%v): %v", name, err.Error())
logger.SetOutput(os.Stdout)
return nil
}
return tmpl
} else {
tmpl, err := createTemplate(name).
ParseFiles(path_)
logger.Debugf("Found single-file template (%v)", path_)
if err != nil {
logger.SetOutput(os.Stderr)
logger.Errorf("Template contains errors (%v): %v", name, err.Error())
logger.SetOutput(os.Stdout)
return nil
}
return tmpl
}
}