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forgejo/modules/templates/static.go
zeripath 7d2545d183
Add nicer error handling on template compile errors (#21350)
There are repeated issues reported whereby users are unable to interpret
the template errors. This PR adds some (somewhat complex) error handling
to the panic recovery for template renderering but hopefully makes the
interpretation of the error easier.

Reference #21344

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-10-07 22:02:24 +01:00

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// Copyright 2016 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
//go:build bindata
package templates
import (
"html/template"
"io"
"io/fs"
"os"
"path"
"path/filepath"
"strings"
texttmpl "text/template"
"time"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
)
var (
subjectTemplates = texttmpl.New("")
bodyTemplates = template.New("")
)
// GlobalModTime provide a global mod time for embedded asset files
func GlobalModTime(filename string) time.Time {
return timeutil.GetExecutableModTime()
}
// GetAssetFilename returns the filename of the provided asset
func GetAssetFilename(name string) (string, error) {
filename := filepath.Join(setting.CustomPath, name)
_, err := os.Stat(filename)
if err != nil && !os.IsNotExist(err) {
return name, err
} else if err == nil {
return filename, nil
}
return "(builtin) " + name, nil
}
// GetAsset get a special asset, only for chi
func GetAsset(name string) ([]byte, error) {
bs, err := os.ReadFile(filepath.Join(setting.CustomPath, name))
if err != nil && !os.IsNotExist(err) {
return nil, err
} else if err == nil {
return bs, nil
}
return BuiltinAsset(strings.TrimPrefix(name, "templates/"))
}
// GetFiles calls a callback for each template asset
func walkTemplateFiles(callback func(path, name string, d fs.DirEntry, err error) error) error {
if err := walkAssetDir(filepath.Join(setting.CustomPath, "templates"), true, callback); err != nil && !os.IsNotExist(err) {
return err
}
return nil
}
// GetTemplateAssetNames only for chi
func GetTemplateAssetNames() []string {
realFS := Assets.(vfsgen۰FS)
tmpls := make([]string, 0, len(realFS))
for k := range realFS {
if strings.HasPrefix(k, "/mail/") {
continue
}
tmpls = append(tmpls, "templates/"+k[1:])
}
customDir := path.Join(setting.CustomPath, "templates")
customTmpls := getDirTemplateAssetNames(customDir)
return append(tmpls, customTmpls...)
}
func walkMailerTemplates(callback func(path, name string, d fs.DirEntry, err error) error) error {
if err := walkAssetDir(filepath.Join(setting.CustomPath, "templates", "mail"), false, callback); err != nil && !os.IsNotExist(err) {
return err
}
return nil
}
// BuiltinAsset reads the provided asset from the builtin embedded assets
func BuiltinAsset(name string) ([]byte, error) {
f, err := Assets.Open("/" + name)
if err != nil {
return nil, err
}
defer f.Close()
return io.ReadAll(f)
}
// BuiltinAssetNames returns the names of the built-in embedded assets
func BuiltinAssetNames() []string {
realFS := Assets.(vfsgen۰FS)
results := make([]string, 0, len(realFS))
for k := range realFS {
results = append(results, k[1:])
}
return results
}
// BuiltinAssetIsDir returns if a provided asset is a directory
func BuiltinAssetIsDir(name string) (bool, error) {
if f, err := Assets.Open("/" + name); err != nil {
return false, err
} else {
defer f.Close()
if fi, err := f.Stat(); err != nil {
return false, err
} else {
return fi.IsDir(), nil
}
}
}