Refactor I/O exceptions

composer.json

@@ -6,7 +6,7 @@
   "description" : "Text encoding",
   "keywords": ["module", "xp"],
   "require" : {
-    "xp-framework/core": "^11.0 | ^10.0",
+    "xp-framework/core": "^12.11 | ^11.11",
     "php" : ">=7.0.0"
   },
   "require-dev" : {

src/main/php/text/encode/Base64InputStream.class.php

@@ -19,7 +19,7 @@ class Base64InputStream implements InputStream {
   public function __construct(InputStream $in) {
     $this->in= Streams::readableFd($in);
     if (!stream_filter_append($this->in, 'convert.base64-decode', STREAM_FILTER_READ)) {
-      throw new \io\IOException('Could not append stream filter');
+      throw new \io\OperationFailed('Could not append stream filter');
     }
   }
 

src/main/php/text/encode/Base64OutputStream.class.php

@@ -21,7 +21,7 @@ public function __construct(OutputStream $out, $lineLength= 0) {
     $params= $lineLength ? ['line-length' => $lineLength, 'line-break-chars' => "\n"] : [];
     $this->out= Streams::writeableFd($out);
     if (!stream_filter_append($this->out, 'convert.base64-encode', STREAM_FILTER_WRITE, $params)) {
-      throw new \io\IOException('Could not append stream filter');
+      throw new \io\OperationFailed('Could not append stream filter');
     }
   }
 

src/main/php/text/encode/QuotedPrintableInputStream.class.php

@@ -49,7 +49,7 @@ public function read($limit= 8192) {
             $o+= 1;
           } else {
             if (1 !== sscanf($h= substr($read, $o, 2), '%x', $c)) {
-              throw new \io\IOException('Invalid byte sequence "='.$h.'"');
+              throw new \io\OperationFailed('Invalid byte sequence "='.$h.'"');
             }
             $this->buffer.= chr($c);
             $o+= 2;