From 3871f4a1a3078ab6bcf0afeb6077eb1532fae9d9 Mon Sep 17 00:00:00 2001
From: ULIVZ <472590061@qq.com>
Date: Tue, 13 Nov 2018 23:45:26 +0800
Subject: [PATCH] feat: cache option (boolean | absolute path | relative path)

It also close #993 via including siteConfig.extendMarkdown & siteConfig.markdown.extendMarkdown to cacheIdentifier.
---
 .../@vuepress/core/lib/prepare/AppContext.js  | 10 +++
 .../@vuepress/core/lib/prepare/CacheLoader.js | 61 +++++++++++++++++++
 .../core/lib/webpack/createBaseConfig.js      | 27 ++------
 packages/@vuepress/shared-utils/index.js      |  1 +
 .../shared-utils/lib/toAbsolutePath.js        | 18 ++++++
 5 files changed, 96 insertions(+), 21 deletions(-)
 create mode 100644 packages/@vuepress/core/lib/prepare/CacheLoader.js
 create mode 100644 packages/@vuepress/shared-utils/lib/toAbsolutePath.js

diff --git a/packages/@vuepress/core/lib/prepare/AppContext.js b/packages/@vuepress/core/lib/prepare/AppContext.js
index eda8085770..67dbd89c69 100644
--- a/packages/@vuepress/core/lib/prepare/AppContext.js
+++ b/packages/@vuepress/core/lib/prepare/AppContext.js
@@ -7,6 +7,7 @@
 const createMarkdown = require('./createMarkdown')
 const loadConfig = require('./loadConfig')
 const loadTheme = require('./loadTheme')
+const { getCacheLoaderOptions } = require('./CacheLoader')
 const {
   fs, path, logger, chalk, globby, sort,
   datatypes: { isFunction },
@@ -73,6 +74,7 @@ module.exports = class AppContext {
    */
 
   async process () {
+    this.resolveCacheLoaderOptions()
     this.normalizeHeadTagUrls()
     await this.resolveTheme()
     this.resolveTemplates()
@@ -174,6 +176,14 @@ module.exports = class AppContext {
     }
   }
 
+  /**
+   * Resolve options of cache loader.
+   */
+
+  resolveCacheLoaderOptions () {
+    Object.assign(this, (getCacheLoaderOptions(this.siteConfig, this.cliOptions, this.cwd, this.isProd)))
+  }
+
   /**
    * Make template configurable
    *
diff --git a/packages/@vuepress/core/lib/prepare/CacheLoader.js b/packages/@vuepress/core/lib/prepare/CacheLoader.js
new file mode 100644
index 0000000000..a3c01825ff
--- /dev/null
+++ b/packages/@vuepress/core/lib/prepare/CacheLoader.js
@@ -0,0 +1,61 @@
+'use strict'
+
+/**
+ * Module dependencies.
+ */
+
+const {
+  path, toAbsolutePath, chalk, logger,
+  datatypes: { isString, isBoolean }
+} = require('@vuepress/shared-utils')
+
+/**
+ * Get cache directory and cache identifier via config.
+ * @param {object} siteConfig
+ * @param {object} cliOptions
+ */
+
+exports.getCacheLoaderOptions = function (siteConfig, cliOptions, cwd, isProd) {
+  const defaultCacheDirectory = path.resolve(__dirname, '../../node_modules/.cache/vuepress')
+  let cache = cliOptions.cache || siteConfig.cache || defaultCacheDirectory
+
+  if (isBoolean(cache)) {
+    if (cache === true) {
+      cache = defaultCacheDirectory
+    }
+  } else if (!isString(cache)) {
+    throw new Error(`expected cache option to be string or boolean, but got ${typeof cache}`)
+  }
+
+  const cacheDirectory = toAbsolutePath(cache, cwd)
+  const cacheIdentifier = JSON.stringify({
+    vuepress: require('../../package.json').version,
+    'cache-loader': require('cache-loader/package.json').version,
+    'vue-loader': require('cache-loader/package.json').version,
+    isProd,
+    config: (
+      (
+        siteConfig.markdown
+          ? JSON.stringify(siteConfig.markdown)
+          : ''
+      ) +
+      (
+        siteConfig.markdown && siteConfig.markdown.extendMarkdown
+          ? siteConfig.markdown.extendMarkdown.toString()
+          : ''
+      ) +
+      (
+        siteConfig.extendMarkdown
+          ? siteConfig.extendMarkdown.toString()
+          : ''
+      ) +
+      (siteConfig.chainWebpack || '').toString() +
+      (siteConfig.configureWebpack || '').toString()
+    )
+  })
+
+  logger.debug('\nCache directory: ' + chalk.gray(cacheDirectory))
+  logger.debug('\nCache identifier : ' + chalk.gray(cacheIdentifier))
+
+  return { cacheDirectory, cacheIdentifier }
+}
diff --git a/packages/@vuepress/core/lib/webpack/createBaseConfig.js b/packages/@vuepress/core/lib/webpack/createBaseConfig.js
index c5fe6a301c..564288f69a 100644
--- a/packages/@vuepress/core/lib/webpack/createBaseConfig.js
+++ b/packages/@vuepress/core/lib/webpack/createBaseConfig.js
@@ -4,7 +4,7 @@
  * Module dependencies.
  */
 
-const { fs, path, logger, chalk } = require('@vuepress/shared-utils')
+const { fs, path, logger } = require('@vuepress/shared-utils')
 
 /**
  * Expose createBaseConfig method.
@@ -18,6 +18,8 @@ module.exports = function createBaseConfig ({
   themePath,
   markdown,
   tempPath,
+  cacheDirectory,
+  cacheIdentifier,
   cliOptions: {
     debug,
     cache
@@ -73,29 +75,12 @@ module.exports = function createBaseConfig ({
   config.module
     .noParse(/^(vue|vue-router|vuex|vuex-router-sync)$/)
 
-  let cacheDirectory
-  if (cache && typeof cache === 'string') {
-    cacheDirectory = path.resolve(cache)
-  } else {
-    cacheDirectory = path.resolve(__dirname, '../../node_modules/.cache/vuepress')
-  }
-  logger.debug('\nCache directory: ' + chalk.gray(cacheDirectory))
-  if (!cache) {
+  if (cache === false) {
     logger.tip('\nClean cache...\n')
     fs.emptyDirSync(cacheDirectory)
   }
-  const cacheIdentifier = JSON.stringify({
-    vuepress: require('../../package.json').version,
-    'cache-loader': require('cache-loader/package.json').version,
-    'vue-loader': require('cache-loader/package.json').version,
-    isProd,
-    isServer,
-    config: (
-      (siteConfig.markdown ? JSON.stringify(siteConfig.markdown) : '') +
-      (siteConfig.chainWebpack || '').toString() +
-      (siteConfig.configureWebpack || '').toString()
-    )
-  })
+
+  cacheIdentifier += `isServer:${isServer}`
 
   function applyVuePipeline (rule) {
     rule
diff --git a/packages/@vuepress/shared-utils/index.js b/packages/@vuepress/shared-utils/index.js
index fcc1bf3f45..49c2b134bc 100644
--- a/packages/@vuepress/shared-utils/index.js
+++ b/packages/@vuepress/shared-utils/index.js
@@ -33,3 +33,4 @@ exports.hash = require('hash-sum')
 exports.fallback = require('./lib/fallback')
 exports.slugify = require('./lib/slugify')
 exports.tryChain = require('./lib/tryChain')
+exports.toAbsolutePath = require('./lib/toAbsolutePath')
diff --git a/packages/@vuepress/shared-utils/lib/toAbsolutePath.js b/packages/@vuepress/shared-utils/lib/toAbsolutePath.js
new file mode 100644
index 0000000000..8da5712bb0
--- /dev/null
+++ b/packages/@vuepress/shared-utils/lib/toAbsolutePath.js
@@ -0,0 +1,18 @@
+'use strict'
+
+/**
+ * Module dependencies.
+ */
+
+const path = require('upath')
+
+/**
+ * Normalize path request to absolute path.
+ */
+
+module.exports = function toAbsolutePath (raw, cwd = process.cwd()) {
+  if (path.isAbsolute(raw)) {
+    return raw
+  }
+  return path.resolve(cwd, raw)
+}