1 files changed, 244 insertions, 0 deletions

diff --git a/doc/docs/.vuepress/theme/util/index.js b/doc/docs/.vuepress/theme/util/index.js
new file mode 100644
index 0000000..92fcd3b
--- /dev/null
+++ b/doc/docs/.vuepress/theme/util/index.js
@@ -0,0 +1,244 @@
+export const hashRE = /#.*$/
+export const extRE = /\.(md|html)$/
+export const endingSlashRE = /\/$/
+export const outboundRE = /^[a-z]+:/i
+
+export function normalize (path) {
+  return decodeURI(path)
+    .replace(hashRE, '')
+    .replace(extRE, '')
+}
+
+export function getHash (path) {
+  const match = path.match(hashRE)
+  if (match) {
+    return match[0]
+  }
+}
+
+export function isExternal (path) {
+  return outboundRE.test(path)
+}
+
+export function isMailto (path) {
+  return /^mailto:/.test(path)
+}
+
+export function isTel (path) {
+  return /^tel:/.test(path)
+}
+
+export function ensureExt (path) {
+  if (isExternal(path)) {
+    return path
+  }
+  const hashMatch = path.match(hashRE)
+  const hash = hashMatch ? hashMatch[0] : ''
+  const normalized = normalize(path)
+
+  if (endingSlashRE.test(normalized)) {
+    return path
+  }
+  return normalized + '.html' + hash
+}
+
+export function isActive (route, path) {
+  const routeHash = decodeURIComponent(route.hash)
+  const linkHash = getHash(path)
+  if (linkHash && routeHash !== linkHash) {
+    return false
+  }
+  const routePath = normalize(route.path)
+  const pagePath = normalize(path)
+  return routePath === pagePath
+}
+
+export function resolvePage (pages, rawPath, base) {
+  if (isExternal(rawPath)) {
+    return {
+      type: 'external',
+      path: rawPath
+    }
+  }
+  if (base) {
+    rawPath = resolvePath(rawPath, base)
+  }
+  const path = normalize(rawPath)
+  for (let i = 0; i < pages.length; i++) {
+    if (normalize(pages[i].regularPath) === path) {
+      return Object.assign({}, pages[i], {
+        type: 'page',
+        path: ensureExt(pages[i].path)
+      })
+    }
+  }
+  console.error(`[vuepress] No matching page found for sidebar item "${rawPath}"`)
+  return {}
+}
+
+function resolvePath (relative, base, append) {
+  const firstChar = relative.charAt(0)
+  if (firstChar === '/') {
+    return relative
+  }
+
+  if (firstChar === '?' || firstChar === '#') {
+    return base + relative
+  }
+
+  const stack = base.split('/')
+
+  // remove trailing segment if:
+  // - not appending
+  // - appending to trailing slash (last segment is empty)
+  if (!append || !stack[stack.length - 1]) {
+    stack.pop()
+  }
+
+  // resolve relative path
+  const segments = relative.replace(/^\//, '').split('/')
+  for (let i = 0; i < segments.length; i++) {
+    const segment = segments[i]
+    if (segment === '..') {
+      stack.pop()
+    } else if (segment !== '.') {
+      stack.push(segment)
+    }
+  }
+
+  // ensure leading slash
+  if (stack[0] !== '') {
+    stack.unshift('')
+  }
+
+  return stack.join('/')
+}
+
+/**
+ * @param { Page } page
+ * @param { string } regularPath
+ * @param { SiteData } site
+ * @param { string } localePath
+ * @returns { SidebarGroup }
+ */
+export function resolveSidebarItems (page, regularPath, site, localePath) {
+  const { pages, themeConfig } = site
+
+  const localeConfig = localePath && themeConfig.locales
+    ? themeConfig.locales[localePath] || themeConfig
+    : themeConfig
+
+  const pageSidebarConfig = page.frontmatter.sidebar || localeConfig.sidebar || themeConfig.sidebar
+  if (pageSidebarConfig === 'auto') {
+    return resolveHeaders(page)
+  }
+
+  const sidebarConfig = localeConfig.sidebar || themeConfig.sidebar
+  if (!sidebarConfig) {
+    return []
+  } else {
+    const { base, config } = resolveMatchingConfig(regularPath, sidebarConfig)
+    if (config === 'auto') {
+      return resolveHeaders(page)
+    }
+    return config
+      ? config.map(item => resolveItem(item, pages, base))
+      : []
+  }
+}
+
+/**
+ * @param { Page } page
+ * @returns { SidebarGroup }
+ */
+function resolveHeaders (page) {
+  const headers = groupHeaders(page.headers || [])
+  return [{
+    type: 'group',
+    collapsable: false,
+    title: page.title,
+    path: null,
+    children: headers.map(h => ({
+      type: 'auto',
+      title: h.title,
+      basePath: page.path,
+      path: page.path + '#' + h.slug,
+      children: h.children || []
+    }))
+  }]
+}
+
+export function groupHeaders (headers) {
+  // group h3s under h2
+  headers = headers.map(h => Object.assign({}, h))
+  let lastH2
+  headers.forEach(h => {
+    if (h.level === 2) {
+      lastH2 = h
+    } else if (lastH2) {
+      (lastH2.children || (lastH2.children = [])).push(h)
+    }
+  })
+  return headers.filter(h => h.level === 2)
+}
+
+export function resolveNavLinkItem (linkItem) {
+  return Object.assign(linkItem, {
+    type: linkItem.items && linkItem.items.length ? 'links' : 'link'
+  })
+}
+
+/**
+ * @param { Route } route
+ * @param { Array<string|string[]> | Array<SidebarGroup> | [link: string]: SidebarConfig } config
+ * @returns { base: string, config: SidebarConfig }
+ */
+export function resolveMatchingConfig (regularPath, config) {
+  if (Array.isArray(config)) {
+    return {
+      base: '/',
+      config: config
+    }
+  }
+  for (const base in config) {
+    if (ensureEndingSlash(regularPath).indexOf(encodeURI(base)) === 0) {
+      return {
+        base,
+        config: config[base]
+      }
+    }
+  }
+  return {}
+}
+
+function ensureEndingSlash (path) {
+  return /(\.html|\/)$/.test(path)
+    ? path
+    : path + '/'
+}
+
+function resolveItem (item, pages, base, groupDepth = 1) {
+  if (typeof item === 'string') {
+    return resolvePage(pages, item, base)
+  } else if (Array.isArray(item)) {
+    return Object.assign(resolvePage(pages, item[0], base), {
+      title: item[1]
+    })
+  } else {
+    const children = item.children || []
+    if (children.length === 0 && item.path) {
+      return Object.assign(resolvePage(pages, item.path, base), {
+        title: item.title
+      })
+    }
+    return {
+      type: 'group',
+      path: item.path,
+      title: item.title,
+      sidebarDepth: item.sidebarDepth,
+      initialOpenGroupIndex: item.initialOpenGroupIndex,
+      children: children.map(child => resolveItem(child, pages, base, groupDepth + 1)),
+      collapsable: item.collapsable !== false
+    }
+  }
+}