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113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
package core
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import (
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"fmt"
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"net/url"
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"strings"
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"github.com/zk-org/zk/internal/util/errors"
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"github.com/zk-org/zk/internal/util/paths"
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)
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// Metadata used to generate a link.
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type LinkFormatterContext struct {
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// Filename of the note
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Filename string `json:"filename"`
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// File path to the note, relative to the notebook root.link-encode-path
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Path string `json:"path"`
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// Absolute file path to the note.
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AbsPath string `json:"absPath" handlebars:"abs-path"`
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// File path to the note, relative to the current directory.
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RelPath string `json:"relPath" handlebars:"rel-path"`
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// Title of the note.
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Title string `json:"title"`
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// Metadata extracted from the YAML frontmatter.
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Metadata map[string]interface{} `json:"metadata"`
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}
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func NewLinkFormatterContext(path NotebookPath, title string, metadata map[string]interface{}) (LinkFormatterContext, error) {
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relPath, err := path.PathRelToWorkingDir()
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if err != nil {
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return LinkFormatterContext{}, err
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}
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return LinkFormatterContext{
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Filename: path.Filename(),
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Path: path.Path,
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AbsPath: path.AbsPath(),
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RelPath: relPath,
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Title: title,
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Metadata: metadata,
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}, nil
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}
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// LinkFormatter formats internal links according to user configuration.
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type LinkFormatter func(context LinkFormatterContext) (string, error)
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// NewLinkFormatter generates a new LinkFormatter from the user Markdown
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// configuration.
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func NewLinkFormatter(config MarkdownConfig, templateLoader TemplateLoader) (LinkFormatter, error) {
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switch config.LinkFormat {
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case "markdown", "":
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return NewMarkdownLinkFormatter(config, false)
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case "wiki":
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return NewWikiLinkFormatter(config)
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default:
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return NewCustomLinkFormatter(config, templateLoader)
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}
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}
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func NewMarkdownLinkFormatter(config MarkdownConfig, onlyHref bool) (LinkFormatter, error) {
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return func(context LinkFormatterContext) (string, error) {
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path := formatPath(context.RelPath, config)
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if !config.LinkEncodePath {
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path = strings.ReplaceAll(path, `\`, `\\`)
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path = strings.ReplaceAll(path, `)`, `\)`)
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}
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if onlyHref {
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return fmt.Sprintf("(%s)", path), nil
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} else {
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title := context.Title
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title = strings.ReplaceAll(title, `\`, `\\`)
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title = strings.ReplaceAll(title, `]`, `\]`)
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return fmt.Sprintf("[%s](%s)", title, path), nil
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}
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}, nil
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}
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func NewWikiLinkFormatter(config MarkdownConfig) (LinkFormatter, error) {
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return func(context LinkFormatterContext) (string, error) {
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path := formatPath(context.Path, config)
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if !config.LinkEncodePath {
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path = strings.ReplaceAll(path, `\`, `\\`)
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path = strings.ReplaceAll(path, `]]`, `\]]`)
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}
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return "[[" + path + "]]", nil
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}, nil
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}
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func NewCustomLinkFormatter(config MarkdownConfig, templateLoader TemplateLoader) (LinkFormatter, error) {
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wrap := errors.Wrapperf("failed to render custom link with format: %s", config.LinkFormat)
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template, err := templateLoader.LoadTemplate(config.LinkFormat)
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if err != nil {
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return nil, wrap(err)
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}
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return func(context LinkFormatterContext) (string, error) {
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context.Filename = formatPath(context.Filename, config)
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context.Path = formatPath(context.Path, config)
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context.RelPath = formatPath(context.RelPath, config)
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context.AbsPath = formatPath(context.AbsPath, config)
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return template.Render(context)
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}, nil
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}
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func formatPath(path string, config MarkdownConfig) string {
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if config.LinkDropExtension {
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path = paths.DropExt(path)
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}
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if config.LinkEncodePath {
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path = strings.ReplaceAll(url.PathEscape(path), "%2F", "/")
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}
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return path
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}
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