Convert shortcodes to captions

_scripts/convert-captions.php

@@ -0,0 +1,40 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use Symfony\Component\Yaml\Yaml;
+
+$sNewDir = 'blog/_posts.new';
+if (!is_dir($sNewDir)) {
+   mkdir($sNewDir); 
+}
+
+foreach (glob('blog/_posts/*.md') as $sFile) {
+    $sBasename = basename($sFile);
+    
+    printf("%s...\n", $sBasename);
+    
+    $sContents = file_get_contents($sFile);
+    $aContents = explode("\n", $sContents);
+    $aParts = explode('--', implode("\n", array_slice($aContents, 1)));
+    $aYaml = Yaml::parse(trim(str_replace("  - \n", null, current($aParts))));
+    
+    $sContents = end($aParts);
+    if (!preg_match_all('~\[caption(?:[^\]]+)width="([\d]+)"\]<img src="([^"]+)"(?: width="([^"]+)")? /> ([^\[]+)\[/caption\]~', $sContents, $aMatches, PREG_SET_ORDER)) {
+        echo "    no caption found\n";
+        continue;
+    }
+
+    foreach ($aMatches as $aMatch) {
+        $sCaption = sprintf("{%% include caption.html\n    width='%d'%s\n    image='%s'\n    text='%s'\n%%}", $aMatch[1], empty($aMatch[1]) ? null : sprintf("\n    image-width='%d'", $aMatch[1]), $aMatch[2], $aMatch[4]);
+        $sContents = str_replace($aMatch[0], $sCaption, $sContents);
+    }
+
+    $sNewFile = sprintf('%s/%s', $sNewDir, $sBasename);
+    $sNewContents = '---' . "\n" . yamlDump($aYaml) . '---' . "\n" . trim($sContents);
+    file_put_contents($sNewFile, $sNewContents);
+    echo "    new file saved!\n";
+}
+
+function yamlDump($aData) {
+    return str_replace("'", null, Yaml::dump($aData, 4, 2));
+}