Convert special characters

_scripts/convert-characters.php

@@ -0,0 +1,62 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use Symfony\Component\Yaml\Yaml;
+
+$sNewDir = 'blog/_posts.new';
+if (!is_dir($sNewDir)) {
+   mkdir($sNewDir); 
+}
+
+$sConvert = <<<EOL
+8220="
+8221="
+8217='
+8230=!
+8216='
+8211=-
+8243="
+EOL;
+$aConversions = [];
+foreach (explode("\n", $sConvert) as $sConversion) {
+    list($iCode, $sConversion) = explode('=', $sConversion);
+    $aConversions[$iCode] = $sConversion;
+}
+
+$aCharacters = [];
+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('/&#([\d]+);/', $sContents, $aMatches)) {
+        echo "    no special character\n";
+        continue;
+    }
+    $aCurrentCharacters = array_unique($aMatches[1]);
+    $aCharacters = array_merge($aCharacters, $aCurrentCharacters);
+    $aCurrentCharacters = array_flip($aCurrentCharacters);
+    foreach ($aConversions as $iCode => $sConversion) {
+        unset($aCurrentCharacters[$iCode]);
+        $sContents = str_replace(sprintf('&#%d;', $iCode), $sConversion, $sContents);
+    }
+    if (count($aCurrentCharacters) > 0) {
+        printf("    unknown characters: %s", implode(', ', array_keys($aCurrentCharacters)));
+    }
+
+    $sNewFile = sprintf('%s/%s', $sNewDir, $sBasename);
+    $sNewContents = '---' . "\n" . yamlDump($aYaml) . '---' . "\n" . trim($sContents);
+    file_put_contents($sNewFile, $sNewContents);
+    echo "    new file saved!\n";
+}
+// echo implode("\n", array_unique($aCharacters));
+
+function yamlDump($aData) {
+    return str_replace("'", null, Yaml::dump($aData, 4, 2));
+}

_scripts/wordpress-unparse.php

@@ -10,7 +10,6 @@ if (!is_dir($sNewDir)) {
    mkdir($sNewDir); 
 }
 
-$i = 0;
 foreach (glob('blog/_posts/*.md') as $sFile) {
     $sBasename = basename($sFile);