mirror of
https://github.com/kevin-DL/sapper.git
synced 2026-01-13 19:45:26 +00:00
Rich Harris
295
src/core/create_manifest_data.ts
Normal file
295
src/core/create_manifest_data.ts
Normal file
@@ -0,0 +1,295 @@
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import * as fs from 'fs';
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import * as path from 'path';
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import { locations } from '../config';
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import { Page, PageComponent, ServerRoute, ManifestData } from '../interfaces';
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import { posixify } from './utils';
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export default function create_manifest_data(cwd = locations.routes()): ManifestData {
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const components: PageComponent[] = [];
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const pages: Page[] = [];
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const server_routes: ServerRoute[] = [];
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const default_layout: PageComponent = {
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default: true,
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name: '_default_layout',
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file: null
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};
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function walk(
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dir: string,
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parent_segments: Part[][],
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parent_params: string[],
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stack: Array<{
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component: PageComponent,
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params: string[]
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}>
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) {
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const items = fs.readdirSync(dir)
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.map(basename => {
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const resolved = path.join(dir, basename);
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const file = path.relative(cwd, resolved);
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const is_dir = fs.statSync(resolved).isDirectory();
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const segment = is_dir
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? basename
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: basename.slice(0, -path.extname(basename).length);
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const parts = get_parts(segment);
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const is_index = is_dir ? false : basename.startsWith('index.');
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const is_page = path.extname(basename) === '.html';
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parts.forEach(part => {
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if (/\]\[/.test(part.content)) {
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throw new Error(`Invalid route ${file} — parameters must be separated`);
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}
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if (part.qualifier && /[\(\)\?\:]/.test(part.qualifier.slice(1, -1))) {
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throw new Error(`Invalid route ${file} — cannot use (, ), ? or : in route qualifiers`);
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}
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});
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return {
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basename,
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parts,
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file: posixify(file),
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is_dir,
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is_index,
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is_page
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};
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})
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.sort(comparator);
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items.forEach(item => {
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if (item.basename[0] === '_') return;
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if (item.basename[0] === '.') {
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if (item.file !== '.well-known') return;
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}
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const segments = parent_segments.slice();
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if (item.is_index && segments.length > 0) {
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const last_segment = segments[segments.length - 1].slice();
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const suffix = item.basename
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.slice(0, -path.extname(item.basename).length).
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replace('index', '');
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if (suffix) {
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const last_part = last_segment[last_segment.length - 1];
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if (last_part.dynamic) {
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last_segment.push({ dynamic: false, content: suffix });
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} else {
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last_segment[last_segment.length - 1] = {
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dynamic: false,
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content: `${last_part.content}${suffix}`
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};
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}
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segments[segments.length - 1] = last_segment;
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}
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} else {
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segments.push(item.parts);
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}
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const params = parent_params.slice();
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params.push(...item.parts.filter(p => p.dynamic).map(p => p.content));
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if (item.is_dir) {
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const index = path.join(dir, item.basename, '_layout.html');
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const component = fs.existsSync(index) && {
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name: `${get_slug(item.file)}__layout`,
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file: `${item.file}/_layout.html`
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};
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if (component) components.push(component);
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walk(
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path.join(dir, item.basename),
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segments,
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params,
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component
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? stack.concat({ component, params })
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: stack.concat(null)
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);
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}
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else if (item.is_page) {
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const component = {
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name: get_slug(item.file),
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file: item.file
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};
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const parts = stack.concat({
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component,
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params
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});
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components.push(component);
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if (item.basename === 'index.html') {
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pages.push({
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pattern: get_pattern(parent_segments, true),
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parts
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});
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} else {
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pages.push({
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pattern: get_pattern(segments, true),
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parts
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});
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}
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}
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else {
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server_routes.push({
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name: `route_${get_slug(item.file)}`,
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pattern: get_pattern(segments, false),
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file: item.file,
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params: params
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});
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}
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});
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}
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const root_file = path.join(cwd, '_layout.html');
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const root = fs.existsSync(root_file)
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? {
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name: 'main',
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file: '_layout.html'
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}
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: default_layout;
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walk(cwd, [], [], []);
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// check for clashes
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const seen_pages: Map<string, Page> = new Map();
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pages.forEach(page => {
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const pattern = page.pattern.toString();
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if (seen_pages.has(pattern)) {
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const file = page.parts.pop().component.file;
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const other_page = seen_pages.get(pattern);
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const other_file = other_page.parts.pop().component.file;
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throw new Error(`The ${other_file} and ${file} pages clash`);
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}
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seen_pages.set(pattern, page);
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});
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const seen_routes: Map<string, ServerRoute> = new Map();
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server_routes.forEach(route => {
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const pattern = route.pattern.toString();
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if (seen_routes.has(pattern)) {
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const other_route = seen_routes.get(pattern);
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throw new Error(`The ${other_route.file} and ${route.file} routes clash`);
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}
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seen_routes.set(pattern, route);
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});
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return {
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root,
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components,
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pages,
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server_routes
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};
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}
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type Part = {
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content: string;
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dynamic: boolean;
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qualifier?: string;
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};
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function comparator(
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a: { basename: string, parts: Part[], file: string, is_index: boolean },
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b: { basename: string, parts: Part[], file: string, is_index: boolean }
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) {
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if (a.is_index !== b.is_index) return a.is_index ? -1 : 1;
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const max = Math.max(a.parts.length, b.parts.length);
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for (let i = 0; i < max; i += 1) {
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const a_sub_part = a.parts[i];
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const b_sub_part = b.parts[i];
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if (!a_sub_part) return 1; // b is more specific, so goes first
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if (!b_sub_part) return -1;
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if (a_sub_part.dynamic !== b_sub_part.dynamic) {
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return a_sub_part.dynamic ? 1 : -1;
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}
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if (!a_sub_part.dynamic && a_sub_part.content !== b_sub_part.content) {
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return (
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(b_sub_part.content.length - a_sub_part.content.length) ||
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(a_sub_part.content < b_sub_part.content ? -1 : 1)
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);
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}
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// If both parts dynamic, check for regexp patterns
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if (a_sub_part.dynamic && b_sub_part.dynamic) {
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const regexp_pattern = /\((.*?)\)/;
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const a_match = regexp_pattern.exec(a_sub_part.content);
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const b_match = regexp_pattern.exec(b_sub_part.content);
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if (!a_match && b_match) {
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return 1; // No regexp, so less specific than b
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}
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if (!b_match && a_match) {
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return -1;
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}
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if (a_match && b_match && a_match[1] !== b_match[1]) {
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return b_match[1].length - a_match[1].length;
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}
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}
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}
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}
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function get_parts(part: string): Part[] {
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return part.split(/\[(.+)\]/)
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.map((str, i) => {
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if (!str) return null;
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const dynamic = i % 2 === 1;
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const [, content, qualifier] = dynamic
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? /([^(]+)(\(.+\))?$/.exec(str)
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: [, str, null];
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return {
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content,
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dynamic,
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qualifier
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};
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})
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.filter(Boolean);
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}
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function get_slug(file: string) {
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return file
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.replace(/[\\\/]index/, '')
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.replace(/_default([\/\\index])?\.html$/, 'index')
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.replace(/[\/\\]/g, '_')
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.replace(/\.\w+$/, '')
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.replace(/\[([^(]+)(?:\([^(]+\))?\]/, '$$$1')
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.replace(/[^a-zA-Z0-9_$]/g, c => {
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return c === '.' ? '_' : `$${c.charCodeAt(0)}`
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});
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}
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function get_pattern(segments: Part[][], add_trailing_slash: boolean) {
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return new RegExp(
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`^` +
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segments.map(segment => {
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return '\\/' + segment.map(part => {
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return part.dynamic
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? part.qualifier || '([^\\/]+?)'
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: encodeURI(part.content.normalize())
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.replace(/\?/g, '%3F')
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.replace(/#/g, '%23')
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.replace(/%5B/g, '[')
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.replace(/%5D/g, ']');
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}).join('');
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}).join('') +
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(add_trailing_slash ? '\\\/?$' : '$')
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);
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}
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