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Generate meta elements from prelude items description and keywords (#1335)

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* Generate meta elements from useful front matters.
Limited to the default template and specific elements.

* Rerun gofmt

* Add "keywords" and remove "language" to/from the list of meta tags.

* Add a simple positive list test for the meta tag generation.

* Move the meta tag list to a var at the begin of the file.
Seperate the Meta tags from the other front matters:
	- Don't override user settings with name `meta`
	- Cleaner Code.

* Remove the uneccessary `[:]` in the []Bytes to String casting.
@mholt was right ;)

* One minor refinement. Combining two statements.
This commit is contained in:
Peer Beckmann 2017-01-23 03:16:38 +01:00 • committed by Matt Holt
parent 11adb2e5a7
commit e5ef285e59
3 changed files with 64 additions and 2 deletions
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17
caddyhttp/markdown/process.go
View file

@ -17,6 +17,13 @@ type FileInfo struct {
ctx httpserver.Context
}
var recognizedMetaTags = []string{
"author",
"copyright",
"description",
"subject",
}
// Summarize returns an abbreviated string representation of the markdown stored in this file.
// wordcount is the number of words returned in the summary.
func (f FileInfo) Summarize(wordcount int) (string, error) {
@ -63,6 +70,14 @@ func (c *Config) Markdown(title string, r io.Reader, dirents []os.FileInfo, ctx
mdata.Variables["title"] = title
}
// move available and valid front matters to the meta values
meta := make(map[string]string)
for _, val := range recognizedMetaTags {
if mVal, ok := mdata.Variables[val]; ok {
meta[val] = mVal.(string)
}
}
// massage possible files
files := []FileInfo{}
for _, ent := range dirents {
@ -73,5 +88,5 @@ func (c *Config) Markdown(title string, r io.Reader, dirents []os.FileInfo, ctx
files = append(files, file)
}
return execTemplate(c, mdata, files, ctx)
return execTemplate(c, mdata, meta, files, ctx)
}

42
caddyhttp/markdown/process_test.go Normal file
View file

@ -0,0 +1,42 @@
package markdown
import (
"github.com/mholt/caddy/caddyhttp/httpserver"
"os"
"strings"
"testing"
)
func TestConfig_Markdown(t *testing.T) {
tests := []map[string]string{
{"author": "authorVal"},
{"copyright": "copyrightVal"},
{"description": "descriptionVal"},
{"subject": "subjectVal"},
{"author": "authorVal", "copyright": "copyrightVal"},
{"author": "authorVal", "copyright": "copyrightVal", "description": "descriptionVal"},
{"author": "authorVal", "copyright": "copyrightVal", "description": "descriptionVal", "subject": "subjectVal"},
}
for i, meta := range tests {
config := &Config{
Template: GetDefaultTemplate(),
}
toml := "+++"
for key, val := range meta {
toml = toml + "\n" + key + "= \"" + val + "\""
}
toml = toml + "\n+++"
res, _ := config.Markdown("Test title", strings.NewReader(toml), []os.FileInfo{}, httpserver.Context{})
sRes := string(res)
for key, val := range meta {
c := strings.Contains(sRes, "<meta name=\""+key+"\" content=\""+val+"\">")
if !c {
t.Error("Test case", i, "should contain meta", key, val)
}
}
}
}

7
caddyhttp/markdown/template.go
View file

@ -15,6 +15,7 @@ type Data struct {
Doc map[string]interface{}
Styles []string
Scripts []string
Meta map[string]string
Files []FileInfo
}
@ -26,12 +27,13 @@ func (d Data) Include(filename string) (string, error) {
}
// execTemplate executes a template given a requestPath, template, and metadata
func execTemplate(c *Config, mdata metadata.Metadata, files []FileInfo, ctx httpserver.Context) ([]byte, error) {
func execTemplate(c *Config, mdata metadata.Metadata, meta map[string]string, files []FileInfo, ctx httpserver.Context) ([]byte, error) {
mdData := Data{
Context: ctx,
Doc: mdata.Variables,
Styles: c.Styles,
Scripts: c.Scripts,
Meta: meta,
Files: files,
}
@ -74,6 +76,9 @@ const (
<head>
<title>{{.Doc.title}}</title>
<meta charset="utf-8">
{{range $key, $val := .Meta}}
<meta name="{{$key}}" content="{{$val}}">
{{end}}
{{- range .Styles}}
<link rel="stylesheet" href="{{.}}">
{{- end}}