first import

sites/all/modules/feeds_xpathparser/FeedsXPathParserQueryParser.inc

@@ -0,0 +1,120 @@
+<?php
+
+/**
+ * @file
+ * Pseudo-parser of XPath queries.  When an XML document has a default
+ * namespace this gets called so that adding the __default__ namepace where
+ * appropriate. Aren't we nice?
+ *
+ * @todo
+ *   Cleanup.
+ * @param $query
+ *   An XPath query string.
+ * @return string
+ *   An XPath query string with the __default__ namespace added.
+ */
+class FeedsXPathParserQueryParser {
+  function __construct($query) {
+    $this->query = preg_replace('/\s+\(\s*/', '(', $query);
+
+    $this->word_boundaries = array(
+      '[', ']', '=', '(', ')', '.', '<', '>', '*', '!', '|', '/', ',', ' ', ':',
+    );
+    $this->in_quotes = FALSE;
+    $this->quote_char = '';
+    $this->word = '';
+    $this->output = '';
+    $this->prev_boundary = '';
+    $this->axis = '';
+    $this->skip_next_word = FALSE;
+    $this->start();
+  }
+
+  function start() {
+    for ($i=0; $i < drupal_strlen($this->query); $i++) {
+      $this->i = $i;
+      $c = $this->query[$i];
+
+      if ($c == '"' || $c == "'") {
+        $this->handle_quote($c);
+        continue;
+      }
+      if ($this->in_quotes) {
+        $this->word .= $c;
+        continue;
+      }
+
+      if (in_array($c, $this->word_boundaries)) {
+        $this->handle_word_boundary($c);
+      }
+      else {
+        $this->word .= $c;
+      }
+    }
+    $this->handle_word();
+  }
+
+  function handle_quote($c) {
+    if ($this->in_quotes && $c == $this->quote_char) {
+      $this->in_quotes = FALSE;
+      $this->word .= $c;
+      $this->output .= $this->word;
+      $this->word = '';
+    }
+    elseif (!$this->in_quotes) {
+      $this->in_quotes = TRUE;
+      $this->handle_word();
+      $this->word = $c;
+      $this->quote_char = $c;
+    }
+    else {
+      $this->word .= $c;
+    }
+  }
+
+  function handle_word_boundary($c) {
+    if (in_array($this->word, array('div', 'or', 'and', 'mod')) &&
+        $this->prev_boundary == ' ' && $c == ' ') {
+      $this->output .= $this->word;
+    }
+    else {
+      $this->handle_word($c);
+    }
+    $this->output .= $c;
+    $this->word = '';
+    $this->prev_boundary = $c;
+  }
+
+  function handle_word($c='') {
+    if ($this->word == '') {
+      return;
+    }
+    if ($c == ':' && $this->query[$this->i + 1] == ':') {
+      $this->axis = $this->word;
+    }
+    if ($c == ':' && $this->query[$this->i - 1] != ':'  &&
+        $this->query[$this->i + 1] != ':') {
+      $this->output .= $this->word;
+      $this->skip_next_word = TRUE;
+      return;
+    }
+    if ($this->skip_next_word) {
+      $this->skip_next_word = FALSE;
+      $this->output .= $this->word;
+      return;
+    }
+    if (is_numeric($this->word) ||
+        $this->axis == 'attribute' ||
+        strpos($this->word, '@') === 0 ||
+        $c == '(' ||
+        $c == ':') {
+      $this->output .= $this->word;
+      return;
+    }
+    $this->output .= '__default__:' . $this->word;
+  }
+
+  function getQuery() {
+    return $this->output;
+  }
+}