29 lines
1.2 KiB
TypeScript
29 lines
1.2 KiB
TypeScript
|
// Pure string logic for zettelclean. No Obsidian imports, so it is unit-testable
|
||
|
|
// in isolation. The transform is always one-way (H1 -> filename), which lets us
|
||
|
|
// freely drop characters without worrying about a reverse mapping.
|
||
|
|
|
||
|
|
// A TIMEID is a leading run of 12 to 18 digits, ending at a dash or end-of-name.
|
||
|
|
// 12-18 because collision-avoidance may append extra digits to a 14-digit stamp.
|
||
|
|
const TIMEID_RE = /^(\d{12,18})(?=-|$)/;
|
||
|
|
|
||
|
|
// Return the immutable id prefix, or null if this file is not a zettel.
|
||
|
|
export function extractTimeId(basename: string): string | null {
|
||
|
|
const m = basename.match(TIMEID_RE);
|
||
|
|
return m?.[1] ?? null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// H1 text -> kebab slug. sanifize as inspiration, deliberately simpler.
|
||
|
|
export function generateSlug(heading: string): string {
|
||
|
|
return heading
|
||
|
|
.normalize('NFKD') // split accented letters into base + combining mark
|
||
|
|
.replace(/[̀-ͯ]/g, '') // strip the combining marks (c-cedilla -> c)
|
||
|
|
.toLowerCase()
|
||
|
|
.replace(/[^a-z0-9]+/g, '-') // any run of non-alphanumerics -> one dash
|
||
|
|
.replace(/^-+|-+$/g, ''); // trim leading/trailing dashes
|
||
|
|
}
|
||
|
|
|
||
|
|
// Reassemble; an empty slug collapses to the bare id.
|
||
|
|
export function buildFilename(id: string, slug: string): string {
|
||
|
|
return slug ? `${id}-${slug}` : id;
|
||
|
|
}
|