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+ options: null, + method: null, + createTime: null, + rawStr: null + }, + + validateAtInit: function() { + if (!this.get('rawStr')) { + throw new Error('Give me a string!'); + } + if (!this.get('createTime')) { + this.set('createTime', new Date().toString()); + } + this.on('change:error', this.errorChanged, this); + }, + + initialize: function() { + this.validateAtInit(); + this.parseOrCatch(); + }, + + parseOrCatch: function() { + try { + this.parse(); + } catch (err) { + if (err instanceof CommandProcessError || + err instanceof GitError) { + this.set('status', 'error'); + this.set('error', err); + } else if (err instanceof CommandResult) { + this.set('status', 'finished'); + this.set('error', err); + } else { + throw err; + } + } + }, + + errorChanged: function(model, err) { + this.set('err', err); + this.set('status', 'error'); + this.formatError(); + }, + + formatError: function() { + this.set('result', this.get('err').toResult()); + }, + + getShortcutMap: function() { + return { + 'git commit': /^gc($|\s)/, + 'git add': /^ga($|\s)/, + 'git checkout': /^gchk($|\s)/, + 'git rebase': /^gr($|\s)/, + 'git branch': /^gb($|\s)/ + }; + }, + + getRegexMap: function() { + return { + // ($|\s) means that we either have to end the string + // after the command or there needs to be a space for options + commit: /^commit($|\s)/, + add: /^add($|\s)/, + checkout: /^checkout($|\s)/, + rebase: /^rebase($|\s)/, + reset: /^reset($|\s)/, + branch: /^branch($|\s)/, + revert: /^revert($|\s)/, + merge: /^merge($|\s)/ + }; + }, + + getSandboxCommands: function() { + return [ + [/^ls/, function() { + throw new CommandResult({ + msg: "DontWorryAboutFilesInThisDemo.txt" + }); + }], + [/^cd/, function() { + throw new CommandResult({ + msg: "Directory Changed to '/directories/dont/matter/in/this/demo'" + }); + }], + [/^git$/, function() { + // TODO better git description. also help, hint, etc + throw new CommandResult({ + msg: _.escape("\ + Git Version \n \ + PCOTTLE.1.0 \ + Usage: \n \ + git [] \ + ") + }); + }] + ]; + }, + + parse: function() { + var str = this.get('rawStr'); + // first if the string is empty, they just want a blank line + if (!str.length) { + throw new CommandResult({msg: ""}); + } + + // then check if it's one of our sandbox commands + _.each(this.getSandboxCommands(), function(tuple) { + var regex = tuple[0]; + if (regex.exec(str)) { + tuple[1](); + } + }); + + // then check if shortcut exists, and replace, but + // preserve options if so + _.each(this.getShortcutMap(), function(regex, method) { + var results = regex.exec(str); + if (results) { + str = method + ' ' + str.slice(results[0].length); + } + }); + + // see if begins with git + if (str.slice(0,3) !== 'git') { + throw new CommandProcessError({ + msg: 'Git commands only, sorry!' + }); + } + + // ok, we have a (probably) valid command. actually parse it + this.gitParse(str); + }, + + gitParse: function(str) { + // now slice off command part + var fullCommand = str.slice('git '.length); + + // see if we support this particular command + _.each(this.getRegexMap(), function(regex, method) { + if (regex.exec(fullCommand)) { + this.set('options', fullCommand.slice(method.length + 1)); + this.set('method', method); + // we should stop iterating, but the regex will only match + // one command in practice. we could stop iterating if we used + // jqeurys for each but im using underscore (for no real reason other + // than style) + } + }, this); + + if (!this.get('method')) { + throw new CommandProcessError({ + msg: "Sorry, this demo does not support that git command: " + fullCommand + }); + } + + // parse off the options and assemble the map / general args + var optionParser = new OptionParser(this.get('method'), this.get('options')); + + // steal these away so we can be completely JSON + this.set('generalArgs', optionParser.generalArgs); + this.set('supportedMap', optionParser.supportedMap); + }, +}); + +/** + * OptionParser + */ +function OptionParser(method, options) { + this.method = method; + this.rawOptions = options; + + this.supportedMap = this.getMasterOptionMap()[method]; + if (this.supportedMap === undefined) { + throw new Error('No option map for ' + method); + } + + this.generalArgs = []; + this.explodeAndSet(); +} + +OptionParser.prototype.getMasterOptionMap = function() { + // here a value of false means that we support it, even if its just a + // pass-through option. If the value is not here (aka will be undefined + // when accessed), we do not support it. + return { + commit: { + '--amend': false, + '-a': false, // warning + '-am': false + }, + add: {}, + branch: { + '-d': false, + '-D': false + }, + checkout: { + '-b': false + }, + reset: { + '--hard': false, + '--soft': false, // this will raise an error but we catch it in gitEngine + }, + merge: {}, + rebase: {}, + revert: {} + }; +}; + +OptionParser.prototype.explodeAndSet = function() { + // split on spaces, except when inside quotes, and strip quotes after. + // for some reason the regex includes the quotes even if i move the parantheses + // inside + var exploded = this.rawOptions.match(/('.*?'|".*?"|\S+)/g) || []; + _.each(exploded, function(part, i) { + exploded[i] = part.replace(/['"]/g, ''); + }); + + for (var i = 0; i < exploded.length; i++) { + var part = exploded[i]; + if (part.slice(0,1) == '-') { + // it's an option, check supportedMap + if (this.supportedMap[part] === undefined) { + throw new CommandProcessError({ + msg: 'The option "' + part + '" is not supported' + }); + } + + // go through and include all the next args until we hit another option or the end + var optionArgs = []; + var next = i + 1; + while (next < exploded.length && exploded[next].slice(0,1) != '-') { + optionArgs.push(exploded[next]); + next += 1; + } + i = next - 1; + + // **phew** we are done grabbing those. theseArgs is truthy even with an empty array + this.supportedMap[part] = optionArgs; + } else { + // must be a general arg + this.generalArgs.push(part); + } + } + + // done! +}; + diff --git a/src/commandViews.js b/src/commandViews.js new file mode 100644 index 00000000..411dd25d --- /dev/null +++ b/src/commandViews.js @@ -0,0 +1,187 @@ +var CommandPromptView = Backbone.View.extend({ + initialize: function(options) { + this.collection = options.collection; + this.commands = []; + this.index = -1; + }, + + events: { + 'keyup #commandTextField': 'keyUp' + }, + + keyUp: function(e) { + // we need to capture some of these events. + // WARNING: this key map is not internationalized :( + var keyMap = { + // enter + 13: _.bind(function() { + this.submit(); + }, this), + // up + 38: _.bind(function() { + this.commandSelectChange(1); + }, this), + // down + 40: _.bind(function() { + this.commandSelectChange(-1); + }, this) + }; + + if (keyMap[e.which] !== undefined) { + e.preventDefault(); + keyMap[e.which](); + } + }, + + commandSelectChange: function(delta) { + this.index += delta; + + // if we are over / under, display blank line. yes this eliminates your + // partially written command, but i doubt that is much in this demo + if (this.index >= this.commands.length || this.index < 0) { + this.clear(); + this.index = -1; + return; + } + + // yay! we actually can display something + this.setTextField(this.commands[this.index]); + }, + + setTextField: function(value) { + this.$('#commandTextField').val(value); + }, + + clear: function() { + this.setTextField(''); + }, + + submit: function() { + var value = this.$('#commandTextField').val().replace('\n', ''); + this.clear(); + + // if we are entering a real command, add it to our history + if (value.length) { + this.commands.unshift(value); + } + this.index = -1; + + // split commands on semicolon + _.each(value.split(';'), _.bind(function(command) { + command = command.replace(/^(\s+)/, ''); + command = command.replace(/(\s+)$/, ''); + if (command.length) { + this.addToCollection(command); + } + }, this)); + }, + + addToCollection: function(value) { + var command = new Command({ + rawStr: value + }); + this.collection.add(command); + } +}); + + +// This is the view for all commands -- it will represent +// their status (inqueue, processing, finished, error), +// their value ("git commit --amend"), +// and the result (either errors or warnings or whatever) +var CommandView = Backbone.View.extend({ + tagName: 'div', + model: Command, + template: _.template($('#command-template').html()), + + events: { + 'click': 'clicked' + }, + + clicked: function(e) { + console.log('was clicked'); + }, + + initialize: function() { + this.model.bind('change', this.wasChanged, this); + this.model.bind('destroy', this.remove, this); + }, + + wasChanged: function(model, changeEvent) { + console.log('command changed', model, changeEvent); + // for changes that are just comestic, we actually only want to toggle classes + // with jquery rather than brutally delete a html of HTML + var changes = changeEvent.changes; + var changeKeys = _.keys(changes); + if (_.difference(changeKeys, ['status']) == 0) { + this.updateStatus(); + } else if (_.difference(changeKeys, ['error']) == 0) { + // the above will + this.render(); + } else { + this.render(); + } + }, + + updateStatus: function() { + var statuses = ['inqueue', 'processing', 'finished']; + var toggleMap = {}; + _.each(statuses, function(status) { + toggleMap[status] = false; + }); + toggleMap[this.model.get('status')] = true; + + var query = this.$('p.commandLine'); + + _.each(toggleMap, function(value, key) { + query.toggleClass(key, value); + }); + }, + + render: function() { + var json = _.extend( + { + resultType: '', + result: '' + }, + this.model.toJSON() + ); + + this.$el.html(this.template(json)); + return this; + }, + + remove: function() { + $(this.el).hide(); + } +}); + + +var CommandLineHistoryView = Backbone.View.extend({ + initialize: function(options) { + this.collection = options.collection; + + this.collection.on('add', this.addOne, this); + this.collection.on('reset', this.addAll, this); + this.collection.on('all', this.render, this); + + this.collection.on('change', this.scrollDown, this); + }, + + scrollDown: function() { + var el = $('#commandLineHistory')[0]; + el.scrollTop = el.scrollHeight; + }, + + addOne: function(command) { + var view = new CommandView({ + model: command + }); + this.$('#commandDisplay').append(view.render().el); + this.scrollDown(); + }, + + addAll: function() { + this.collection.each(this.addOne); + } +});