diff -r 000000000000 -r 6474c204b198 xpcom/glue/nsINIParser.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/glue/nsINIParser.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file was shamelessly copied from mozilla/xpinstall/wizard/unix/src2
+
+#ifndef nsINIParser_h__
+#define nsINIParser_h__
+
+#ifdef MOZILLA_INTERNAL_API
+#define nsINIParser nsINIParser_internal
+#endif
+
+#include "nscore.h"
+#include "nsClassHashtable.h"
+#include "nsAutoPtr.h"
+
+#include <stdio.h>
+
+class nsIFile;
+
+class NS_COM_GLUE nsINIParser
+{
+public:
+    nsINIParser() { }
+    ~nsINIParser() { }
+
+    /**
+     * Initialize the INIParser with a nsIFile. If this method fails, no
+     * other methods should be called. This method reads and parses the file,
+     * the class does not hold a file handle open. An instance must only be
+     * initialized once.
+     */
+    nsresult Init(nsIFile* aFile);
+
+    /**
+     * Initialize the INIParser with a file path. If this method fails, no
+     * other methods should be called. This method reads and parses the file,
+     * the class does not hold a file handle open. An instance must only
+     * be initialized once.
+     */
+    nsresult Init(const char *aPath);
+
+    /**
+     * Callback for GetSections
+     * @return false to stop enumeration, or true to continue.
+     */
+    typedef bool
+    (* INISectionCallback)(const char *aSection, void *aClosure);
+
+    /**
+     * Enumerate the sections within the INI file.
+     */
+    nsresult GetSections(INISectionCallback aCB, void *aClosure);
+
+    /**
+     * Callback for GetStrings
+     * @return false to stop enumeration, or true to continue
+     */
+    typedef bool
+    (* INIStringCallback)(const char *aString, const char *aValue,
+                          void *aClosure);
+
+    /**
+     * Enumerate the strings within a section. If the section does
+     * not exist, this function will silently return.
+     */
+    nsresult GetStrings(const char *aSection,
+                        INIStringCallback aCB, void *aClosure);
+
+    /**
+     * Get the value of the specified key in the specified section
+     * of the INI file represented by this instance.
+     *
+     * @param aSection      section name
+     * @param aKey          key name
+     * @param aResult       the value found
+     * @throws NS_ERROR_FAILURE if the specified section/key could not be
+     *                          found.
+     */
+    nsresult GetString(const char *aSection, const char *aKey, 
+                       nsACString &aResult);
+
+    /**
+     * Alternate signature of GetString that uses a pre-allocated buffer
+     * instead of a nsACString (for use in the standalone glue before
+     * the glue is initialized).
+     *
+     * @throws NS_ERROR_LOSS_OF_SIGNIFICANT_DATA if the aResult buffer is not
+     *         large enough for the data. aResult will be filled with as
+     *         much data as possible.
+     *         
+     * @see GetString [1]
+     */
+    nsresult GetString(const char *aSection, const char* aKey,
+                       char *aResult, uint32_t aResultLen);
+
+private:
+    struct INIValue
+    {
+        INIValue(const char *aKey, const char *aValue)
+            : key(aKey), value(aValue) { }
+
+        const char *key;
+        const char *value;
+        nsAutoPtr<INIValue> next;
+    };
+
+    struct GSClosureStruct
+    {
+        INISectionCallback  usercb;
+        void               *userclosure;
+    };
+
+    nsClassHashtable<nsDepCharHashKey, INIValue> mSections;
+    nsAutoArrayPtr<char> mFileContents;    
+
+    nsresult InitFromFILE(FILE *fd);
+
+    static PLDHashOperator GetSectionsCB(const char *aKey,
+                                         INIValue *aData, void *aClosure);
+};
+
+#endif /* nsINIParser_h__ */