From bd458d7618e941463d9203fc2e350fcf266eba90 Mon Sep 17 00:00:00 2001
From: Neil Blakey-Milner <nbm@knowledgetree.com>
Date: Sat, 11 Jun 2005 21:43:26 +0000
Subject: [PATCH] Import SQL commands from a file, splitting into separate SQL statements.

---
 lib/database/sqlfile.inc.php | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+), 0 deletions(-)
 create mode 100644 lib/database/sqlfile.inc.php

diff --git a/lib/database/sqlfile.inc.php b/lib/database/sqlfile.inc.php
new file mode 100644
index 0000000..2e85376
--- /dev/null
+++ b/lib/database/sqlfile.inc.php
@@ -0,0 +1,105 @@
+<?php
+
+class SQLFile {
+    function sqlFromFile($path) {
+        return SQLFile::splitSQL(file_get_contents($path));
+    }
+
+    function splitSQL($sql) {
+        $instring = false;
+        $i = 0;
+        $remaining = $sql;
+        $query = "";
+        $aQueries = array();
+
+        $strlen = strlen($sql);
+
+        for ($i = 0; $i < $strlen; $i++) {
+            $c = $remaining[$i];
+            if ($c === ";") {
+                $query .= substr($remaining, 0, $i + 1);
+                $aQueries[] = $query;
+                $query = "";
+                $remaining = trim(substr($remaining, $i + 1));
+                $i = 0;
+                $strlen = strlen($remaining);
+                continue;
+            }
+            if ($c === "`") {
+                $next = strpos($remaining, "`", $i);
+                if ($next === false) {
+                    $query .= $remaining;
+                    $aQueries[] = $query;
+                    return $aQueries;
+                }
+                $query .= substr($remaining, 0, $next);
+                $remaining = substr($remaining, $next);
+                $i = 0;
+                $strlen = strlen($remaining);
+                continue;
+            }
+            if (($c === "'") || ($c === '"')) {
+                $stringchar = $c;
+                $notfound = true;
+                
+                while ($notfound) {
+                    $next = strpos($remaining, $stringchar, $i + 1);
+                    if ($next === false) {
+                        $query .= $remaining;
+                        $aQueries[] = $query;
+                        return $aQueries;
+                    }
+                    $i = $next + 1;
+                    $quotes = true;
+                    $b = 1;
+                    while ($remaining[$next - $b] === "\\") {
+                        $quotes = !$quotes;
+                        $b++;
+                    }
+                    if ($quotes) {
+                        $notfound = false;
+                    }
+                }
+                $query .= substr($remaining, 0, $next);
+                $remaining = substr($remaining, $next);
+                $i = 0;
+                $strlen = strlen($remaining);
+                continue;
+            }
+            
+            $nextdelim = SQLFile::_nextDelim($remaining);
+            if ($nextdelim === false) {
+                $query .= $remaining;
+                $aQueries[] = $query;
+                return $aQueries;
+            }
+            // $query .= substr($remaining, 0, $nextdelim);
+        }
+        return $aQueries;
+    }
+
+    function _nextDelim($string) {
+        $q = strpos($string, "'");
+        $d = strpos($string, '"');
+        $b = strpos($string, "`");
+        $s = strpos($string, ";");
+
+        $min = false;
+        foreach (array($q, $d, $b, $s) as $c) {
+            if ($min === false) {
+                $min = $c;
+                continue;
+            }
+            if ($c === false) {
+                continue;
+            }
+            if ($c < $min) {
+                $min = $c;
+                continue;
+            }
+        }
+        return $min;
+    }
+}
+
+?>
--
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