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git-wrapper: allow the edit-res.exe copy to change icons, too

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As we already allow changing text resources, it is a very small step to
allow changing the `.exe` icon, too.

So let's just do it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin
2015-03-25 16:51:55 +01:00
parent 304d297463
commit 35e219dff2
1 changed files with 129 additions and 3 deletions
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132
compat/win32/git-wrapper.c
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@@ -175,6 +175,100 @@ static LPWSTR fixup_commandline(LPWSTR exepath, LPWSTR *exep, int *wait,
#ifdef MAGIC_RESOURCE
#include <stdint.h>
#pragma pack(2)
struct resource_directory
{
int8_t width;
int8_t height;
int8_t color_count;
int8_t reserved;
int16_t planes;
int16_t bit_count;
int32_t bytes_in_resource;
int16_t id;
};
struct header
{
int16_t reserved;
int16_t type;
int16_t count;
};
struct icon_header
{
int8_t width;
int8_t height;
int8_t color_count;
int8_t reserved;
int16_t planes;
int16_t bit_count;
int32_t bytes_in_resource;
int32_t image_offset;
};
struct icon_image
{
BITMAPINFOHEADER header;
RGBQUAD colors;
int8_t xors[1];
int8_t ands[1];
};
struct icon
{
int count;
struct header *header;
struct resource_directory *items;
struct icon_image **images;
};
static int parse_ico_file(LPWSTR ico_path, struct icon *result)
{
struct header file_header;
FILE *file = _wfopen(ico_path, L"rb");
int i;
if (!file) {
fwprintf(stderr, L"could not open icon file '%s'", ico_path);
return 1;
}
fread(&file_header, sizeof(struct header), 1, file);
result->count = file_header.count;
result->header = malloc(sizeof(struct header) + result->count
* sizeof(struct resource_directory));
result->header->reserved = 0;
result->header->type = 1;
result->header->count = result->count;
result->items = (struct resource_directory *)(result->header + 1);
struct icon_header *icon_headers = malloc(result->count
* sizeof(struct icon_header));
fread(icon_headers, result->count * sizeof(struct icon_header),
1, file);
result->images = malloc(result->count * sizeof(struct icon_image *));
for (i = 0; i < result->count; i++) {
struct icon_image** image = result->images + i;
struct icon_header* icon_header = icon_headers + i;
struct resource_directory *item = result->items + i;
*image = malloc(icon_header->bytes_in_resource);
fseek(file, icon_header->image_offset, SEEK_SET);
fread(*image, icon_header->bytes_in_resource, 1, file);
memcpy(item, icon_header, sizeof(struct resource_directory));
item->id = (int16_t)(i + 1);
}
fclose(file);
return 0;
}
static int wsuffixcmp(LPWSTR text, LPWSTR suffix)
{
int text_len = wcslen(text), suffix_len = wcslen(suffix);
@@ -186,9 +280,10 @@ static int wsuffixcmp(LPWSTR text, LPWSTR suffix)
}
static int edit_resources(LPWSTR exe_path,
LPWSTR *commands, int command_count)
LPWSTR ico_path, LPWSTR *commands, int command_count)
{
WORD language = MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
struct icon icon;
HANDLE handle;
int i;
@@ -206,6 +301,20 @@ static int edit_resources(LPWSTR exe_path,
return -1;
}
if (ico_path) {
if (wsuffixcmp(ico_path, L".ico")) {
fwprintf(stderr, L"Not an .ico file: '%s'", ico_path);
return -1;
}
if (_waccess(ico_path, 0) == -1) {
fwprintf(stderr, L"File not found: '%s'", ico_path);
return -1;
}
if (parse_ico_file(ico_path, &icon))
return -1;
}
handle = BeginUpdateResource(exe_path, FALSE);
if (!handle) {
fwprintf(stderr,
@@ -213,6 +322,20 @@ static int edit_resources(LPWSTR exe_path,
return -1;
}
if (ico_path) {
int id = 1;
UpdateResource(handle, RT_GROUP_ICON,
L"MAINICON", language,
icon.header, sizeof(struct header) + icon.count
* sizeof(struct resource_directory));
for (i = 0; i < icon.count; i++) {
UpdateResource(handle, RT_ICON,
MAKEINTRESOURCE(id++), language,
icon.images[i],
icon.items[i].bytes_in_resource);
}
}
if (command_count >= 0) {
LPWSTR buffer, p;
int alloc = 16; /* 16 words with string lengths, for sure... */
@@ -262,12 +385,15 @@ static int configure_via_resource(LPWSTR basename, LPWSTR exepath, LPWSTR exep,
wargv = CommandLineToArgvW(cmdline, &wargc);
if (wargv[1]) {
if (wargc == 4 && !wcscmp(wargv[1], L"icon"))
exit(edit_resources(wargv[2], wargv[3],
NULL, -1));
if (wargc > 1 && !wcscmp(wargv[1], L"command"))
exit(edit_resources(wargv[2],
exit(edit_resources(wargv[2], NULL,
wargv + 3, wargc - 3));
}
fwprintf(stderr,
L"Usage: %s command <exe> <args>...\n",
L"Usage: %s (icon | command) <exe> <args>...\n",
basename);
exit(1);
}