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templates: Add fileStat function (#5497)

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* Add isDir template function

* Update modules/caddyhttp/templates/tplcontext.go

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>

* Fix funcIsDir return value on error

* Fix funcIsDir return false when root file system not specified

* Add stat function, remove isDir function

* Remove isDir function (really)

* Rename stat to fileStat

---------

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
This commit is contained in:
Stéphane Mourey 2023-04-24 18:36:37 +02:00 committed by GitHub
parent 53b6fab125
commit 2943c41884
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1 changed files with 17 additions and 0 deletions
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17
modules/caddyhttp/templates/tplcontext.go
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@ -18,6 +18,7 @@ import (
"bytes" "bytes"
"fmt" "fmt"
"io" "io"
"io/fs"
"net" "net"
"net/http" "net/http"
"os" "os"
@ -79,6 +80,7 @@ func (c *TemplateContext) NewTemplate(tplName string) *template.Template {
"markdown": c.funcMarkdown, "markdown": c.funcMarkdown,
"splitFrontMatter": c.funcSplitFrontMatter, "splitFrontMatter": c.funcSplitFrontMatter,
"listFiles": c.funcListFiles, "listFiles": c.funcListFiles,
"fileStat": c.funcFileStat,
"env": c.funcEnv, "env": c.funcEnv,
"placeholder": c.funcPlaceholder, "placeholder": c.funcPlaceholder,
"fileExists": c.funcFileExists, "fileExists": c.funcFileExists,
@ -395,6 +397,21 @@ func (c TemplateContext) funcFileExists(filename string) (bool, error) {
return false, nil return false, nil
} }
// funcStat returns Stat of a filename
func (c TemplateContext) funcFileStat(filename string) (fs.FileInfo, error) {
if c.Root == nil {
return nil, fmt.Errorf("root file system not specified")
}
file, err := c.Root.Open(path.Clean(filename))
if err != nil {
return nil, err
}
defer file.Close()
return file.Stat()
}
// funcHTTPError returns a structured HTTP handler error. EXPERIMENTAL; SUBJECT TO CHANGE. // funcHTTPError returns a structured HTTP handler error. EXPERIMENTAL; SUBJECT TO CHANGE.
// Example usage: `{{if not (fileExists $includeFile)}}{{httpError 404}}{{end}}` // Example usage: `{{if not (fileExists $includeFile)}}{{httpError 404}}{{end}}`
func (c TemplateContext) funcHTTPError(statusCode int) (bool, error) { func (c TemplateContext) funcHTTPError(statusCode int) (bool, error) {