New files from unstable branch

[fa-stable.git] / reporting / includes / fpdi / pdf_context.php

diff --git a/reporting/includes/fpdi/pdf_context.php b/reporting/includes/fpdi/pdf_context.php
new file mode 100644 (file)
index 0000000..ce0b0e0
--- /dev/null
+++ b/reporting/includes/fpdi/pdf_context.php
@@ -0,0 +1,82 @@
+<?php
+//
+//  FPDI - Version 1.2.1
+//
+//    Copyright 2004-2008 Setasign - Jan Slabon
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+class pdf_context {
+
+       var $file;
+       var $buffer;
+       var $offset;
+       var $length;
+
+       var $stack;
+
+       // Constructor
+
+       function pdf_context($f) {
+               $this->file = $f;
+               $this->reset();
+       }
+
+       // Optionally move the file
+       // pointer to a new location
+       // and reset the buffered data
+
+       function reset($pos = null, $l = 100) {
+               if (!is_null ($pos)) {
+                       fseek ($this->file, $pos);
+               }
+
+               $this->buffer = $l > 0 ? fread($this->file, $l) : '';
+               $this->length = strlen($this->buffer);
+               if ($this->length < $l)
+            $this->increase_length($l - $this->length);
+               $this->offset = 0;
+               $this->stack = array();
+       }
+
+       // Make sure that there is at least one
+       // character beyond the current offset in
+       // the buffer to prevent the tokenizer
+       // from attempting to access data that does
+       // not exist
+
+       function ensure_content() {
+               if ($this->offset >= $this->length - 1) {
+                       return $this->increase_length();
+               } else {
+                       return true;
+               }
+       }
+
+       // Forcefully read more data into the buffer
+
+       function increase_length($l=100) {
+               if (feof($this->file)) {
+                       return false;
+               } else {
+                       $totalLength = $this->length + $l;
+                   do {
+                $this->buffer .= fread($this->file, $totalLength-$this->length);
+            } while ((($this->length = strlen($this->buffer)) != $totalLength) && !feof($this->file));
+                       
+                       return true;
+               }
+       }
+
+}
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