adding mermaid packages

node_modules/gitbook-cli/lib/index.js

@@ -0,0 +1,121 @@
+var Q = require('q');
+var _ = require('lodash');
+var path = require('path');
+
+var config = require('./config');
+var local = require('./local');
+var registry = require('./registry');
+var tags = require('./tags');
+
+// Return book version (string) required by a book
+function bookVersion(bookRoot) {
+    var version;
+
+    try {
+        var bookJson = require(path.resolve(bookRoot, 'book'));
+        version = bookJson.gitbook;
+    } catch (e) {
+        if (e.code != 'MODULE_NOT_FOUND') throw e;
+    }
+
+    return version || '*';
+}
+
+// Ensure that a version exists
+// or install it
+function ensureVersion(bookRoot, version, opts) {
+    opts = _.defaults(opts || {}, {
+        install: true
+    });
+
+    return Q()
+
+    // If not defined, load version required from book.json
+    .then(function() {
+        if (version) return version;
+        return bookVersion(bookRoot);
+    })
+
+    // Resolve version locally
+    .then(function(_version) {
+        version = _version;
+        return local.resolve(version)
+        // Install if needed
+        .fail(function(err) {
+            if (!opts.install) throw err;
+
+            return registry.install(version)
+            .then(function() {
+                return ensureVersion(bookRoot, version, {
+                    install: false
+                });
+            });
+        });
+    });
+}
+
+// Get version in a book
+function getVersion(bookRoot, version) {
+    return ensureVersion(bookRoot, version, {
+        install: false
+    });
+}
+
+// Ensure a version exists (or install it)
+// Then load it and returns the gitbook instance
+function ensureAndLoad(bookRoot, version, opts) {
+    return ensureVersion(bookRoot, version, opts)
+    .then(function(version) {
+        return local.load(version);
+    });
+}
+
+// Update current version
+//   -> Check that a newer version exists
+//   -> Install it
+//   -> Remove previous version
+function updateVersion(tag) {
+    tag = tag || 'latest';
+
+    return getVersion(null, {
+        install: false
+    })
+    .fail(function(err) {
+        return Q(null);
+    })
+    .then(function(currentV) {
+        return registry.versions()
+        .then(function(result) {
+            var remoteVersion = result.tags[tag];
+            if (!remoteVersion) throw new Error('Tag doesn\'t exist: '+tag);
+
+            if (currentV && tags.sort(remoteVersion, currentV.version) >= 0) return null;
+
+            return registry.install(remoteVersion)
+            .then(function() {
+                if (!currentV) return;
+                return local.remove(currentV.tag);
+            })
+            .thenResolve(remoteVersion);
+        });
+    });
+}
+
+module.exports = {
+    init: config.init,
+    setRoot: config.setRoot,
+
+    load: local.load,
+    get: getVersion,
+    getBookVersion: bookVersion,
+    ensure: ensureVersion,
+    ensureAndLoad: ensureAndLoad,
+    uninstall: local.remove,
+    link: local.link,
+    versions: local.versions,
+
+    update: updateVersion,
+
+    install: registry.install,
+    available: registry.versions
+};