brent saner
100 lines
1.3 KiB
Go
100 lines
1.3 KiB
Go
package main
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import (
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"embed"
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"io"
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"io/fs"
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// "fmt"
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"log"
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// "os"
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// "path/filepath"
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"text/template"
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// "github.com/davecgh/go-spew/spew"
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)
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var (
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//go:embed "tplfiles"
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tplfiles embed.FS
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tpl *template.Template = template.New("")
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tw *TplWalker = new(TplWalker)
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)
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type (
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TplWalker struct {
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tpl *template.Template
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fs fs.FS
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}
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)
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func (t *TplWalker) walkFunc(fpath string, d fs.DirEntry, inErr error) (err error) {
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var b []byte
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var f fs.File
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if inErr != nil {
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err = inErr
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return
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}
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if d.IsDir() {
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return
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}
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if f, err = t.fs.Open(fpath); err != nil {
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return
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}
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defer func() {
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var ok bool
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var c io.Closer
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if f != nil {
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if c, ok = f.(io.Closer); ok {
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if err = c.Close(); err != nil {
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return
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}
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}
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}
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}()
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if b, err = io.ReadAll(f); err != nil {
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return
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}
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if _, err = t.tpl.New(fpath).Parse(string(b)); err != nil {
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return
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}
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return
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}
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func (t *TplWalker) Walk() (err error) {
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if err = fs.WalkDir(t.fs, ".", t.walkFunc); err != nil {
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return
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}
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return
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}
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func init() {
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var err error
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tw.tpl = tpl
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tw.fs = tplfiles
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if err = tw.Walk(); err != nil {
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log.Panicln(err)
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}
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}
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func main() {
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var idx int
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var sub *template.Template
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log.Printf("Root template name is %q", tpl.Name())
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for idx, sub = range tpl.Templates() {
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log.Printf("Sub template %d: %q", idx, sub.Name())
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}
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}
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