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gojekyll/collection/collection.go
2017-08-27 14:18:57 -04:00

99 lines
2.7 KiB
Go

package collection
import (
"fmt"
"path/filepath"
"strings"
"github.com/osteele/gojekyll/config"
"github.com/osteele/gojekyll/pages"
"github.com/osteele/gojekyll/renderers"
"github.com/osteele/gojekyll/templates"
"github.com/osteele/liquid"
)
// Collection is a Jekyll collection https://jekyllrb.com/docs/collections/.
type Collection struct {
Name string
Metadata map[string]interface{}
cfg *config.Config
pages []pages.Page
site Site
}
// Site is the interface a site provides to its collections.
type Site interface {
Config() *config.Config
Exclude(string) bool
RelativePath(string) string
RendererManager() renderers.Renderers
}
const draftsPath = "_drafts"
const postsName = "posts"
// New creates a new Collection
func New(s Site, name string, metadata map[string]interface{}) *Collection {
return &Collection{
Name: name,
Metadata: metadata,
cfg: s.Config(),
site: s,
}
}
func (c *Collection) String() string {
return fmt.Sprintf("%T{Name=%q}", c, c.Name)
}
// AbsDir returns the absolute path to the collection directory.
func (c *Collection) AbsDir() string {
return filepath.Join(c.cfg.SourceDir(), c.PathPrefix())
}
// PathPrefix returns the collection's directory prefix, e.g. "_posts/"
func (c *Collection) PathPrefix() string { return filepath.FromSlash("_" + c.Name + "/") }
// IsPostsCollection returns true if the collection is the special "posts" collection.
func (c *Collection) IsPostsCollection() bool { return c.Name == postsName }
// Output returns a bool indicating whether files in this collection should be written.
func (c *Collection) Output() bool { return templates.VariableMap(c.Metadata).Bool("output", false) }
// Pages is a slice of the collection's pages. Pages in the Post collection are ordered by date.
func (c *Collection) Pages() []pages.Page {
return c.pages
}
// Render renders the collection's pages.
func (c *Collection) Render() error {
for _, p := range c.Pages() {
err := p.Render()
if err != nil {
return err
}
}
return nil
}
// ToLiquid returns the value of the collection in the template
// "collections" array.
func (c *Collection) ToLiquid() interface{} {
return liquid.IterationKeyedMap(templates.MergeVariableMaps(
c.Metadata,
map[string]interface{}{
"label": c.Name,
"docs": c.pages,
"files": []string{},
"relative_directory": strings.TrimSuffix(c.PathPrefix(), "/"),
"directory": c.AbsDir(),
}))
}
// PermalinkPattern returns the default permalink pattern for this collection.
func (c *Collection) PermalinkPattern() string {
pattern := c.strategy().defaultPermalinkPattern(c.cfg)
return templates.VariableMap(c.Metadata).String("permalink", pattern)
}