more work, about to mess w/ blueprint

Rakefile

@@ -1,8 +1,9 @@
 require 'rubygems'
 require 'rake'
 require 'echoe'
+require 'fileutils'
 
-Echoe.new('trivial', '0.0.5') do |p|
+Echoe.new('trivial', '0.0.6') do |p|
 	p.summary = "Ultra-lightweight website framework for PHP"
 	p.description = <<-EOT
 		For those who are using PHP to build their sites and want a very simple framework
@@ -16,3 +17,16 @@ Echoe.new('trivial', '0.0.5') do |p|
 	p.email = "john@coswelproductions.com"
 	p.url = "http://github.com/johnbintz/trivial"
 end
+
+namespace :blueprint do
+  desc "Include the latest Blueprint CSS files"
+  task :download do
+    FileUtils.rm_r 'blueprint' if File.directory? 'blueprint'
+    FileUtils.mkdir 'blueprint'
+    Dir.chdir 'blueprint'
+    system 'git clone git://github.com/joshuaclayton/blueprint-css.git'
+    FileUtils.cp_r File.join('blueprint-css', 'blueprint'), File.join('..', 'styles')
+    Dir.chdir '..'
+    FileUtils.rm_r 'blueprint'
+  end
+end

config/trivial.inc

@@ -0,0 +1,3 @@
+<?php
+
+$trivial_env = "development";

content/dynamic.inc

@@ -0,0 +1 @@
+<?php echo "hello world!" ?>

lib/trivial.php

@@ -1,15 +1,39 @@
 <?php
 
-// If you're using a different global default layout name, change it here
-$layout = 'application';
+// PUT SITE CONFIGURATION IN config/trivial.inc
 
 if (!isset($_SERVER['REDIRECT_URL'])) {
 	header('HTTP/1.1 403 Forbidden');
 	exit(1);
 }
 
-// END OF USER-CONFIGURABLE SETTINGS
+$root_dir = realpath(dirname(__FILE__) . '/../');
 
+// All of these should be set within config/trivial.inc!
+
+// The default layout.
+$layout = 'application';
+
+// Additional scripts and stylesheets can be loaded in this way. Blueprint does not get loaded this way.
+$global_head = array('scripts' => array(), 'styles' => array());
+
+// If the environment is anything but production, errors will be rendered in the page.
+$trivial_env = 'development';
+
+if (($config = fe_check('config/trivial.inc')) !== false) {
+	include($config);
+}
+
+$trim = str_replace(realpath($_SERVER['DOCUMENT_ROOT']), '', realpath($root_dir));
+
+$requested = preg_replace('#/$#', '/index.html', $_SERVER['REDIRECT_URL']);
+$requested = preg_replace("#${trim}/(.*)\.[^\.]+\$#", '\1', $requested);
+
+/**
+ * Check the root path for the requested file.
+ * @param string $path The path to look for.
+ * @return string The path to the file on the filesystem, or false if not found.
+ */
 function fe_check($path) {
 	global $root_dir;
 	if (file_exists($full_path = ($root_dir . '/' . $path))) {
@@ -19,6 +43,13 @@ function fe_check($path) {
 	}
 }
 
+/**
+ * Load a partial file.
+ * Partials live in the views directory and are prefixed with an underscore (ex: section/_a_partial.inc).
+ * @param string $name The name of the partial without the leading underscore (ex: section/a_partial).
+ * @param array $local A hash of variables to include into the local scope of the partial.
+ * @return string The partial's result.
+ */
 function partial($name, $local = array()) {
 	$name = preg_replace('#/([^/]+)$', '/_\1', $name);
 	if (($path = fe_check('views/' . $name . '.inc')) !== false) {
@@ -27,30 +58,62 @@ function partial($name, $local = array()) {
 		include($path);
 		return ob_get_clean();
 	} else {
-		trigger_error("No partial named ${name} found!");
+		render_error("No partial named ${name} found!");
 	}
 }
 
-$root_dir = realpath(dirname(__FILE__) . '/../');
-
-$trim = str_replace(realpath($_SERVER['DOCUMENT_ROOT']), '', realpath($root_dir));
-
-$requested = preg_replace('#/$#', '/index.html', $_SERVER['REDIRECT_URL']);
-$requested = preg_replace("#${trim}/(.*)\.[^\.]+\$#", '\1', $requested);
+/**
+ * Handle a rendering error.
+ * If the environment is 'production', the error is only logged. If it's anything else, it's printed
+ * on the screen. Regardless, an HTTP 500 error is returned and processing stops.
+ * @param string $error The error message to display.
+ */
+function render_error($error) {
+  global $trivial_env;
+  if ($trivial_env == 'production') {
+    error_log($error);
+  } else {
+    echo "<div id='trivial-error'>${error}</div>";
+  }
+  header('HTTP/1.1 500 Internal Server Error');
+  exit(1);
+}
 
+/**
+ * Render style link tags.
+ */
 function styles() {
-	return head_component(func_get_args(), 'styles/%s.css',	'<link rel="stylesheet" href="styles/%s.css" type="text/css" />');
+	return head_component('styles', func_get_args(), 'styles/%s.css',	'<link rel="stylesheet" href="styles/%s.css" type="text/css" />');
 }
 
+/**
+ * Render script tags.
+ */
 function scripts() {
-	return head_component(func_get_args(), 'scripts/%s.js',	'<script type="text/javascript" src="scripts/%s.js"></script>');
+	return head_component('scripts', func_get_args(), 'scripts/%s.js',	'<script type="text/javascript" src="scripts/%s.js"></script>');
 }
 
-function head_component($additional, $search, $format) {
-	global $requested;
+/**
+ * Render head compoments.
+ * @param string $what The type of component to render. $global_head is searched for a matching key and values for that key are merged into the list of styles.
+ * @param array $additional An array of additional components to display.
+ * @param string $search The search pattern to use for each component, run through sprintf() with the first %s being replaced with the component name.
+ * @param string $format The output format of the HTML tag to bring in the content.
+ * @return string The HTML for all found components.
+ */
+function head_component($what, $additional, $search, $format) {
+	global $requested, $global_head;
 
 	$output = array();
-	foreach (array_merge(array('application', $requested), $additional) as $file) {
+
+	$components = array_merge(array('application', $requested), $additional);
+	if (is_array($global_head[$what])) {
+		$components = array_merge($components, $global_head[$what]);
+	}
+
+	sort($components);
+
+	foreach ($components as $file) {
 		if (fe_check(sprintf($search, $file)) !== false) {
 			$output[] = sprintf($format, $file);
 		}
@@ -58,31 +121,54 @@ function head_component($additional, $search, $format) {
 	return implode("\n", $output);
 }
 
-$content = null;
-if (($content_file = fe_check('content/' . $requested . '.html')) !== false) {
-	$content = file_get_contents($content_file);
+/**
+ * Get the code to embed the Blueprint CSS framework.
+ * You should be starting with Blueprint and working your way from there, if only for the CSS reset & IE fixes alone.
+ * @return string The HTML for Blueprint.
+ */
+function blueprint() {
+
 }
 
+// Search for files in the content directory, starting with .inc files (which will be include()d), then .html files (which will be file_get_content()sed)
+$content = null;
+if (($content_file = fe_check('content/' . $requested . '.inc')) !== false) {
+	ob_start();
+	include($content_file);
+	$content = ob_get_clean();
+} else {
+	if (($content_file = fe_check('content/' . $requested . '.html')) !== false) {
+		$content = file_get_contents($content_file);
+	}
+}
+
+// Look for an action for the request. If it's found, execute it. Remember, $content contains the result of the above operation, if something was found.
 foreach (array('application', $requested) as $action) {
 	if (($action_file = fe_check('actions/' . $action . '.inc')) !== false) {
 		include($action_file);
 	}
 }
 
+// Look for a view with the same name as the request. If it's found, include() it, wrapping the include() in an output buffer block.
 if (($view_file = fe_check('views/' . $requested . '.inc')) !== false) {
 	ob_start();
 	include($view_file);
 	$content = ob_get_clean();
 }
 
+// We should have content by this point. If not, raise an error.
 if (is_null($content)) {
-	trigger_error("No content generated for ${requested}! Did you create a content, action, or view file for this request?");
+	render_error("No content generated for ${requested}! Did you create a content, action, or view file for this request?");
 }
 
+// We should have a layout, too. If not, raise an error.
 if (($layout_file = fe_check('views/' . $layout . '.inc')) !== false) {
 	ob_start();
 	include($layout_file);
 	$content = ob_get_clean();
+} else {
+	render_error("Layout not found: ${layout}");
 }
 
+// We're done!
 echo $content;

readme.md

@@ -35,3 +35,8 @@ does the following (for the examples, the request was for `about_us/contact.html
 ## Styles and scripts
 
 Styles and scripts can be searched for in a structured way. The included `views/application.inc` gives an example as to how this works.
+
+## Notes
+
+Trivial includes the reset.css and typography.css files from the [Blueprint CSS Framework](http://blueprintcss.org/).
+They're automatically included in the default application.css file.

styles/application.css

@@ -1,7 +0,0 @@
-* {
-	font-family: helvetica, arial
-}
-
-body {
-	background-color: #eee
-}

views/application.inc

@@ -1,6 +1,7 @@
 <html>
 	<head>
 		<title>My Application</title>
+		<?php echo blueprint() ?>
 		<?php echo scripts() ?>
 		<?php echo styles() ?>
 	</head>