[WIP] move downloads inline with changelog

lib/CProject.php

@@ -16,6 +16,8 @@ class CProject {
 	private $downloads = array();
 	private $downloads_hashes = array();
 	
+	public $downloads_section_was_replaced = false;
+	
 	public $lifespan = 0;
 	
 	public $tags = array();
@@ -26,19 +28,23 @@ class CProject {
 		$this->dir = BASEDIR.'data/'.$dirname.'/';
 		$this->projname = $projname;
 		
+		$matches = [];
+		
 		// Identify resources in folder
 		
 		$ls = scandir($this->dir);
 		$found_real_lastupdate = false;
 		foreach($ls as $file) {
-			if ($file[0] == '.') continue;
+			if ($file[0] == '.') {
+				continue;
+			}
 			
 			if ($file == 'README.txt') {
 				
 				$this->longdesc = file_get_contents($this->dir.'README.txt');
+				$this->longdesc = str_replace("\r", "", $this->longdesc); // filter windows CR
 				
 				// Guess 'last update' time
-				$matches = [];
 				if (preg_match('~\n(\d\d\d\d-\d\d-\d\d)~', $this->longdesc, $matches)) {
 					// Use first date entry (assumed to be a CHANGELOG)
 					$this->lastupdate = strtotime($matches[1]);
@@ -60,13 +66,12 @@ class CProject {
 				$this->lifespan = floor(max(0, $newest - $eldest) / 3600); // could divide by 86400 but it doesn't matter
 				
 				// Find 'written in'
-				$matches = array();
+				if (preg_match('~Written in ([^\\n]+)~', $this->longdesc, $matches)) {
-				if (preg_match('~Written in ([^\\r\\n]+)~', $this->longdesc, $matches)) {
 					$this->subtag = rtrim($matches[1], ' .');
 				}
 				
 				// Find tags
-				if (preg_match('~Tags: ([^\\r\\n]+)~', $this->longdesc, $matches)) {
+				if (preg_match('~Tags: ([^\\n]+)~', $this->longdesc, $matches)) {
 					$this->tags = array_map('trim', explode(',', $matches[1]));
 				}
 				
@@ -76,10 +81,9 @@ class CProject {
 				$this->shortdesc[0] = strtolower($this->shortdesc[0]); // cosmetic lowercase
 				
 				// Filters for longdesc	
-				$this->longdesc = str_replace("\r", "", $this->longdesc); // filter windows CR
 				
 				$prefix_html = '';
-				$this->longdesc = preg_replace_callback('~\r?\nWritten in ([^\\n]+)~ms', function($matches) use (&$prefix_html) {
+				$this->longdesc = preg_replace_callback('~\nWritten in ([^\\n]+)~ms', function($matches) use (&$prefix_html) {
 					$prefix_html .= (
 						(SHIELDS_PREFIX ? mkshield('build', 'success', 'brightgreen').' ' : '').
 						mkshield('written in', rtrim($matches[1], '.'), 'blue')
@@ -120,6 +124,8 @@ class CProject {
 				sha1_file($this->dir.$this->downloads[$i])
 			);
 		}
+		
+		
 	}
 	
 	public function genHomeImage() {		
@@ -134,6 +140,71 @@ class CProject {
 		
 	}
 	
+	protected function filterLongDescArea() {
+		
+		// If *all* downloads can be assigned to a changelog release entry,
+		//  then move the files
+		// A release entry is marked by any string following the date field.
+		
+		preg_match_all('~^(\d\d\d\d-\d\d-\d\d):? (.+?)\n[\s\t]*\n~ms', $this->longdesc, $matches, PREG_SET_ORDER);
+		
+		do {
+			// Ensure changelog exists
+			if (! count($matches)) {
+				break;
+			}
+			
+			// Find all tags
+			$known_tags = [];
+			foreach($matches as $i => $match) {
+				$tag = trim(explode("\n", $match[2])[0]);
+				$known_tags[$tag] = $i;
+			}
+			
+			// Ensure all release entries have tags
+			if (count($matches) != count($known_tags)) {
+				error_log("[".$this->projname."] not all release entries have tags\n");
+				break;
+			}
+			
+			// Ensure all downloads can be assigned to tags
+			$found_idx = [];
+			foreach($this->downloads as $idx => $filename) {
+				foreach(array_keys($known_tags) as $tagname) {
+					if (stripos($filename, $tagname) !== false) {
+						$found_idx[$filename] = true;
+					}
+				}
+			}
+			if (count($found_idx) != count($this->downloads)) {
+				error_log("[".$this->projname."] not all downloads have matching tags");
+				break;
+			}
+			
+			// Make HTML modifications
+			foreach($known_tags as $tag_name => $tag_idx) {
+				$find = rtrim($matches[$tag_idx][0]);
+				$this->longdesc = str_replace(
+					$find,
+					$find.'${{TAG_'.$tag_idx.'}}',
+					$this->longdesc
+				);
+			}
+			
+			$this->longdesc = text2html($this->longdesc);
+			foreach($known_tags as $tag_name => $tag_idx) {
+				$this->longdesc = str_replace('${{TAG_'.$tag_idx.'}}', $this->renderDownloadsBlock(false, $tag_name), $this->longdesc);
+			}
+			
+			// Skip displaying the global downloads area
+			// This flag also indicates that the content has been pre-HTMLified
+			$this->downloads_section_was_replaced = true;
+			
+			error_log("[".$this->projname."] successful upgrade\n");
+			
+		} while(false);
+	}
+	
 	public function numDownloads() {
 		return count($this->downloads);
 	}
@@ -185,7 +256,46 @@ class CProject {
 		}
 	}
 	
+	public function renderDownloadsBlock($include_header=false, $filter='') {
+		$render_downloads = [];
+		if (strlen($filter)) {
+			foreach($this->downloads as $idx => $filename) {
+				if (stripos($filename, $filter) !== false) {
+					$render_downloads[$idx] = $filename;
+				}
+			}
+		} else {
+			$render_downloads = $this->downloads;
+		}
+		
+		if (! count($render_downloads)) {
+			return;
+		}
+		
+		ob_start();
+?>
+<?php if ($include_header) { ?>
+	<strong>DOWNLOAD</strong>		
+<?php } ?> 
+	<ul class="<?=$include_header ? 'downloads-large' : 'downloads-small' ?>">
+<?php foreach($render_downloads as $idx => $filename) { ?> 
+		<li>
+			<a href="srv/<?=hesc($this->downloads_hashes[$idx])?>/<?=hesc(rawurlencode($filename))?>"><?=hesc($filename)?></a>
+			<small>
+				<?=hesc(fbytes(filesize(BASEDIR.'wwwroot/srv/'.$this->downloads_hashes[$idx].'/'.$filename)))?>
+			</small>
+		</li>
+<?php } ?> 
+	</ul>
+<?php
+		return ob_get_clean();
+	}
+	
 	public function index() {
+		
+		$this->filterLongDescArea();
+		$longdesc_html = $this->downloads_section_was_replaced ? $this->longdesc : text2html($this->longdesc);
+		
 ?> 
 <h2><?=hesc(str_replace('_', ' ', $this->projname))?></h2>
 
@@ -199,25 +309,14 @@ class CProject {
 		
 		<strong><?=hesc(strtoupper(ARTICLE_HEADER))?></strong>
 
-		<p><?=text2html($this->longdesc)?></p>
+		<p><?=$longdesc_html?></p>
 
 		<?=file_get_contents(BASEDIR.'/footer.htm')?> 
 		
-<?php if (count($this->downloads)) { ?> 
+<?php if (! $this->downloads_section_was_replaced) { ?> 
-		
+		<?=$this->renderDownloadsBlock(true, '')?> 
-		<strong>DOWNLOAD</strong>
-		
-		<ul>
-	<?php foreach($this->downloads as $idx => $filename) { ?> 
-			<li>
-				<a href="srv/<?=hesc($this->downloads_hashes[$idx])?>/<?=hesc(rawurlencode($filename))?>"><?=hesc($filename)?></a>
-				<small>
-					<?=hesc(fbytes(filesize(BASEDIR.'wwwroot/srv/'.$this->downloads_hashes[$idx].'/'.$filename)))?>
-				</small>
-			</li>
-	<?php } ?> 
-		</ul>
 <?php } ?> 
+
 	</div>
 
 <?php if (count($this->images)) { ?>