-
-
Notifications
You must be signed in to change notification settings - Fork 4.1k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
templates: Change functions, add front matter support, better markdown
- Loading branch information
Showing
6 changed files
with
271 additions
and
29 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| package templates | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strings" | ||
| "unicode" | ||
|
|
||
| "github.com/naoina/toml" | ||
| "gopkg.in/yaml.v2" | ||
| ) | ||
|
|
||
| func extractFrontMatter(input string) (map[string]interface{}, string, error) { | ||
| // get the bounds of the first non-empty line | ||
| var firstLineStart, firstLineEnd int | ||
| lineEmpty := true | ||
| for i, b := range input { | ||
| if b == '\n' { | ||
| firstLineStart = firstLineEnd | ||
| if firstLineStart > 0 { | ||
| firstLineStart++ // skip newline character | ||
| } | ||
| firstLineEnd = i | ||
| if !lineEmpty { | ||
| break | ||
| } | ||
| continue | ||
| } | ||
| lineEmpty = lineEmpty && unicode.IsSpace(b) | ||
| } | ||
| firstLine := input[firstLineStart:firstLineEnd] | ||
|
|
||
| // see what kind of front matter there is, if any | ||
| var closingFence string | ||
| var fmParser func([]byte) (map[string]interface{}, error) | ||
| switch string(firstLine) { | ||
| case yamlFrontMatterFenceOpen: | ||
| fmParser = yamlFrontMatter | ||
| closingFence = yamlFrontMatterFenceClose | ||
| case tomlFrontMatterFenceOpen: | ||
| fmParser = tomlFrontMatter | ||
| closingFence = tomlFrontMatterFenceClose | ||
| case jsonFrontMatterFenceOpen: | ||
| fmParser = jsonFrontMatter | ||
| closingFence = jsonFrontMatterFenceClose | ||
| default: | ||
| // no recognized front matter; whole document is body | ||
| return nil, input, nil | ||
| } | ||
|
|
||
| // find end of front matter | ||
| fmEndFenceStart := strings.Index(input[firstLineEnd:], "\n"+closingFence) | ||
| if fmEndFenceStart < 0 { | ||
| return nil, "", fmt.Errorf("unterminated front matter") | ||
| } | ||
| fmEndFenceStart += firstLineEnd + 1 // add 1 to account for newline | ||
|
|
||
| // extract and parse front matter | ||
| frontMatter := input[firstLineEnd:fmEndFenceStart] | ||
| fm, err := fmParser([]byte(frontMatter)) | ||
| if err != nil { | ||
| return nil, "", err | ||
| } | ||
|
|
||
| // the rest is the body | ||
| body := input[fmEndFenceStart+len(closingFence):] | ||
|
|
||
| return fm, body, nil | ||
| } | ||
|
|
||
| func yamlFrontMatter(input []byte) (map[string]interface{}, error) { | ||
| m := make(map[string]interface{}) | ||
| err := yaml.Unmarshal(input, &m) | ||
| return m, err | ||
| } | ||
|
|
||
| func tomlFrontMatter(input []byte) (map[string]interface{}, error) { | ||
| m := make(map[string]interface{}) | ||
| err := toml.Unmarshal(input, &m) | ||
| return m, err | ||
| } | ||
|
|
||
| func jsonFrontMatter(input []byte) (map[string]interface{}, error) { | ||
| input = append([]byte{'{'}, input...) | ||
| input = append(input, '}') | ||
| m := make(map[string]interface{}) | ||
| err := json.Unmarshal(input, &m) | ||
| return m, err | ||
| } | ||
|
|
||
| type parsedMarkdownDoc struct { | ||
| Meta map[string]interface{} `json:"meta,omitempty"` | ||
| Body string `json:"body,omitempty"` | ||
| } | ||
|
|
||
| const ( | ||
| yamlFrontMatterFenceOpen, yamlFrontMatterFenceClose = "---", "---" | ||
| tomlFrontMatterFenceOpen, tomlFrontMatterFenceClose = "+++", "+++" | ||
| jsonFrontMatterFenceOpen, jsonFrontMatterFenceClose = "{", "}" | ||
| ) |
Oops, something went wrong.