Merge pull request #395 from thriqon/pretty-print-dependencies-315

Issue #315: Nice dependency listings for packages

lib/commands/ls.js

@@ -4,7 +4,9 @@ var utils = require('../utils'),
     couchdb = require('../couchdb'),
     kansorc = require('../kansorc'),
     argParse = require('../args').parse,
-    path = require('path');
+    path = require('path'),
+    tree = require('../tree'),
+    install = require('./install');
 
 
 exports.summary = 'Builds a project and reports a list of its exports';
@@ -31,6 +33,7 @@ exports.usage = '' +
 '  --rewrites          List rewrites (by "from" pattern)\n' +
 '  --validate          Test whether validate_doc_update exists\n' +
 '  --size              Calculate size of design doc including dependencies\n' +
+'  --dependencies      List dependencies\n' +
 '\n' +
 'If no options are specified, shows all information';
 
@@ -89,6 +92,32 @@ function deep_print(obj, ignores, path) {
     return str;
 }
 
+/**
+ * Prints a hierarchy. Parameter 2 and 3 should not be passed by user code.
+ * @param obj an object with a structure like: {title: 'root', children: [{title: 'ch1', children: []}, {title: 'ch2', children: []}]}
+ */
+function hierarchy_print(obj, thislevellog, nextlevellog) {
+    var joinedprint = function () {
+        console.log(Array.prototype.slice.call(arguments).join(''));
+    };
+    thislevellog = thislevellog || joinedprint;
+    nextlevellog = nextlevellog || joinedprint;
+
+    if (typeof obj.title !== 'undefined') {
+        if (obj.children.length > 0) {
+            thislevellog(logger.yellow('┬─ ') + obj.title);
+        } else {
+            thislevellog(logger.yellow('── ') + obj.title);
+        }
+    }
+    for (var i = 0; i < obj.children.length - 1; i++) {
+        hierarchy_print(obj.children[i], nextlevellog.bind(null, logger.yellow('├─')), nextlevellog.bind(null, logger.yellow('│ ')));
+    }
+    if (obj.children.length > 0) {
+        hierarchy_print(obj.children[obj.children.length - 1], nextlevellog.bind(null, logger.yellow('└─')), nextlevellog.bind(null, '  '));
+    }
+};
+
 exports.run = function (settings, args) {
     var options = {
         name:           {match: '--name'},
@@ -106,6 +135,7 @@ exports.run = function (settings, args) {
         rewrites:       {match: '--rewrites'},
         validate:       {match: '--validate'},
         size:           {match: '--size'},
+        dependencies:   {match: '--dependencies'},
     };
     var a = argParse(args, options);
     var dir = utils.abspath(a.positional[0] || '.');
@@ -233,8 +263,32 @@ exports.run = function (settings, args) {
                 );
             }
 
-            //logger.clean_exit = true;
-            logger.end();
+            if (!custom || a.options.dependencies) {
+                console.log(logger.bold('Dependencies'));
+
+                tree.build({config: cfg, source: 'root'}, [install.dirSource(path.join(dir, 'packages'))], function (err, packages) {
+                    var mypkgs = [];
+                    var attach_deps = function (key, obj, ptree) {
+                        for (var k in ptree) {
+                            if (ptree.hasOwnProperty(k) && ptree[k].ranges && ptree[k].ranges.hasOwnProperty(key)) {
+                                obj.push({
+                                    "title"   : logger.cyan(k) + (ptree[k].ranges[key] ? logger.cyan('(' + ptree[k].ranges[key] + ')') : '') + '@' + ptree[k].current_version, 
+                                    "children": []
+                                });
+                                attach_deps(k, obj[obj.length -1 ].children, ptree);
+                            }
+                        }
+                    };
+                    attach_deps(cfg.name, mypkgs, packages);
+
+                    hierarchy_print({children: mypkgs});
+
+                    console.log('');
+                    logger.end();
+                });
+            } else {
+                logger.end();
+            }
         });
     });
 };