gecko/xulrunner/tools/redit/redit.cpp

181 lines
5.0 KiB
C++
Raw Normal View History

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is McCoy.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org/>.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dave Townsend <dtownsend@oxymoronical.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <fcntl.h>
/*
Icon files are made up of:
IconHeader
IconDirEntry1
IconDirEntry2
...
IconDirEntryN
IconData1
IconData2
...
IconDataN
Each IconData must be added as a new RT_ICON resource to the exe. Then
an RT_GROUP_ICON resource must be added that contains an equivalent
header:
IconHeader
IconResEntry1
IconResEntry2
...
IconResEntryN
*/
#pragma pack(push, 2)
typedef struct
{
WORD Reserved;
WORD ResourceType;
WORD ImageCount;
} IconHeader;
typedef struct
{
BYTE Width;
BYTE Height;
BYTE Colors;
BYTE Reserved;
WORD Planes;
WORD BitsPerPixel;
DWORD ImageSize;
DWORD ImageOffset;
} IconDirEntry;
typedef struct
{
BYTE Width;
BYTE Height;
BYTE Colors;
BYTE Reserved;
WORD Planes;
WORD BitsPerPixel;
DWORD ImageSize;
WORD ResourceID; // This field is the one difference to above
} IconResEntry;
#pragma pack(pop)
int
main(int argc, char **argv)
{
if (argc != 3) {
printf("Usage: redit <exe file> <icon file>\n");
return 1;
}
int file = _open(argv[2], _O_BINARY | _O_RDONLY);
if (file == -1) {
fprintf(stderr, "Unable to open icon file.\n");
return 1;
}
// Load all the data from the icon file
long filesize = _filelength(file);
char* data = (char*)malloc(filesize);
_read(file, data, filesize);
_close(file);
IconHeader* header = (IconHeader*)data;
// Open the target library for updating
HANDLE updateRes = BeginUpdateResource(argv[1], FALSE);
if (updateRes == NULL) {
fprintf(stderr, "Unable to open library for modification.\n");
free(data);
return 1;
}
// Allocate the group resource entry
long groupsize = sizeof(IconHeader) + header->ImageCount * sizeof(IconResEntry);
char* group = (char*)malloc(groupsize);
if (!group) {
fprintf(stderr, "Failed to allocate memory for new images.\n");
free(data);
return 1;
}
memcpy(group, data, sizeof(IconHeader));
IconDirEntry* sourceIcon = (IconDirEntry*)(data + sizeof(IconHeader));
IconResEntry* targetIcon = (IconResEntry*)(group + sizeof(IconHeader));
for (int id = 1; id <= header->ImageCount; id++) {
// Add the individual icon
if (!UpdateResource(updateRes, RT_ICON, MAKEINTRESOURCE(id),
MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),
data + sourceIcon->ImageOffset, sourceIcon->ImageSize)) {
fprintf(stderr, "Unable to update resource.\n");
EndUpdateResource(updateRes, TRUE); // Discard changes, ignore errors
free(data);
free(group);
return 1;
}
// Copy the data for this icon (note that the structs have different sizes)
memcpy(targetIcon, sourceIcon, sizeof(IconResEntry));
targetIcon->ResourceID = id;
sourceIcon++;
targetIcon++;
}
free(data);
if (!UpdateResource(updateRes, RT_GROUP_ICON, "MAINICON",
MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),
group, groupsize)) {
fprintf(stderr, "Unable to update resource.\n");
EndUpdateResource(updateRes, TRUE); // Discard changes
free(group);
return 1;
}
free(group);
// Save the modifications
if (!EndUpdateResource(updateRes, FALSE)) {
fprintf(stderr, "Unable to write changes to library.\n");
return 1;
}
return 0;
}