mirror of
https://github.com/danog/gojekyll.git
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98 lines
2.9 KiB
Go
98 lines
2.9 KiB
Go
package pages
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import (
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"fmt"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/osteele/gojekyll/templates"
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"github.com/osteele/gojekyll/utils"
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)
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// DefaultPermalinkPattern is the default permalink pattern for pages that aren't in a collection
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const DefaultPermalinkPattern = "/:path:output_ext"
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// PermalinkStyles defines built-in styles from https://jekyllrb.com/docs/permalinks/#builtinpermalinkstyles
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var PermalinkStyles = map[string]string{
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"date": "/:categories/:year/:month/:day/:title.html",
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"pretty": "/:categories/:year/:month/:day/:title/",
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"ordinal": "/:categories/:year/:y_day/:title.html",
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"none": "/:categories/:title.html",
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}
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// permalinkDateVariables maps Jekyll permalink template variable names
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// to time.Format layout strings
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var permalinkDateVariables = map[string]string{
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"month": "01",
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"imonth": "1",
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"day": "02",
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"i_day": "2",
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"hour": "15",
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"minute": "04",
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"second": "05",
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"year": "2006",
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"short_year": "06",
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}
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var templateVariableMatcher = regexp.MustCompile(`:\w+\b`)
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// See https://jekyllrb.com/docs/permalinks/#template-variables
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func (p *page) permalinkVariables() map[string]string {
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var (
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relpath = p.relpath
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root = utils.TrimExt(relpath)
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name = filepath.Base(root)
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fm = p.frontMatter
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bindings = templates.VariableMap(fm)
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slug = bindings.String("slug", utils.Slugify(name))
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date = p.fileModTime
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dateField = bindings.String("date", "")
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)
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if dateField != "" {
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date = p.PostDate().In(time.Local)
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}
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vars := map[string]string{
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"categories": strings.Join(p.Categories(), "/"),
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"collection": bindings.String("collection", ""),
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"name": utils.Slugify(name),
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"path": "/" + root, // TODO are we removing and then adding this?
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"slug": slug,
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"title": utils.Slugify(bindings.String("title", name)),
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// The following aren't documented, but are evident
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"output_ext": p.OutputExt(),
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"y_day": strconv.Itoa(p.fileModTime.YearDay()),
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}
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for k, v := range permalinkDateVariables {
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vars[k] = date.Format(v)
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}
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return vars
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}
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func (p *page) computePermalink(vars map[string]string) (src string, err error) {
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pattern := templates.VariableMap(p.frontMatter).String("permalink", DefaultPermalinkPattern)
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if p, found := PermalinkStyles[pattern]; found {
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pattern = p
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}
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templateVariables := p.permalinkVariables()
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s, err := utils.SafeReplaceAllStringFunc(templateVariableMatcher, pattern, func(m string) (string, error) {
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varname := m[1:]
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value, found := templateVariables[varname]
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if !found {
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return "", fmt.Errorf("unknown variable %q in permalink template %q", varname, pattern)
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}
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return value, nil
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})
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if err != nil {
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return "", err
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}
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return utils.URLPathClean("/" + s), nil
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}
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func (p *page) setPermalink() (err error) {
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p.permalink, err = p.computePermalink(p.permalinkVariables())
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return
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}
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