forked from sveinbjornt/osxiconutils
-
Notifications
You must be signed in to change notification settings - Fork 2
/
icns2image.m
225 lines (186 loc) · 7.77 KB
/
icns2image.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/*
icns2image - Mac command line program to convert an Apple icns file to a standard image format
Copyright (c) 2003-2020, Sveinbjorn Thordarson <sveinbjorn@sveinbjorn.org>
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or other
materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may
be used to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#import <Cocoa/Cocoa.h>
#import "CLI.h"
static const char optstring[] = "vht:r:";
static struct option long_options[] = {
{"version", no_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{"type", required_argument, 0, 't'},
{"rep", required_argument, 0, 'r'},
{0, 0, 0, 0}
};
static NSUInteger ImageTypeForSuffix(NSString *suffix);
static void PrintHelp(void);
int main(int argc, const char * argv[]) { @autoreleasepool {
NSString *typeStr = nil;
NSUInteger representation = 0;
int optch;
int long_index = 0;
// parse getopt
while ((optch = getopt_long(argc, (char *const *)argv, optstring, long_options, &long_index)) != -1) {
switch (optch) {
// specify icon representation size to convert to image, e.g. 128
case 'r':
{
NSString *repStr = @(optarg);
int num;
BOOL isInteger = [[NSScanner scannerWithString:repStr] scanInt:&num];
if (isInteger) {
representation = [repStr intValue];
} else {
NSPrintErr(@"Invalid representation size: '%@'", repStr);
exit(EX_USAGE);
}
}
break;
// image format
case 't':
typeStr = @(optarg);
break;
// print version
case 'v':
PrintProgramVersion();
break;
// print help
case 'h':
default:
{
PrintHelp();
exit(EXIT_SUCCESS);
}
break;
}
}
NSMutableArray *args = ReadRemainingArgs(argc, argv);
if ([args count] < 2) {
PrintHelp();
exit(EX_USAGE);
}
NSString *srcPath = [args[0] stringByExpandingTildeInPath];
NSString *destPath = [args[1] stringByExpandingTildeInPath];
// make sure source file exists
if (![[NSFileManager defaultManager] fileExistsAtPath:srcPath]) {
NSPrintErr(@"File '%@' does not exist", srcPath);
exit(EXIT_FAILURE);
}
// make sure destination path is writable
if ([[NSFileManager defaultManager] fileExistsAtPath:destPath] &&
![[NSFileManager defaultManager] isWritableFileAtPath:destPath]) {
NSPrintErr(@"Cannot write to path '%@'", destPath);
exit(EX_CANTCREAT);
}
// read icon from source file
NSImage *img = [[NSImage alloc] initWithContentsOfFile:srcPath];
NSArray *reps = [img representations];
if (img == nil || [reps count] == 0) {
NSPrintErr(@"Error reading icon from file");
exit(EXIT_FAILURE);
}
NSBitmapImageRep *wantedRep = nil;
NSBitmapImageRep *largestRep = nil;
// Find the representation we want - default to largest
// Choose not-retina version over retina version
for (NSImageRep *rep in reps) {
if (![rep isKindOfClass:[NSBitmapImageRep class]]) {
continue;
}
NSBitmapImageRep *brep = (NSBitmapImageRep *)rep;
if (!largestRep || [brep pixelsWide] > [largestRep pixelsWide] || ([brep pixelsWide] == [largestRep pixelsWide] && [brep size].width > [largestRep size].width )) {
largestRep = brep;
}
if (representation && [brep pixelsWide] == representation && (wantedRep == nil || [brep size].width > [wantedRep size].width)) {
wantedRep = brep;
}
}
if (representation && wantedRep == nil) {
NSPrintErr(@"Representation '%dx%d' not found in file, using largest representation (%dx%d) instead.",
representation, representation, [largestRep pixelsWide], [largestRep pixelsHigh]);
}
if (wantedRep == nil) {
wantedRep = largestRep;
}
// determine image output format
BOOL imgTypeSpecifiedWithFlag = NO;
NSUInteger imgType = NSTIFFFileType;
if (typeStr) {
imgType = ImageTypeForSuffix(typeStr);
if (imgType == -1) {
NSPrintErr(@"Invalid image type: %@", typeStr);
}
imgTypeSpecifiedWithFlag = YES;
}
if (!imgTypeSpecifiedWithFlag) {
NSString *suffix = [[destPath lastPathComponent] pathExtension];
imgType = ImageTypeForSuffix(suffix);
if (imgType == -1) {
NSPrintErr(@"Unable to determine image type from suffix '%@', falling back to TIFF", suffix);
imgType = NSTIFFFileType;
}
}
NSDictionary *prop = @{ NSImageCompressionFactor : @(1.0f) };
NSData *data;
// convert to TIFF first because otherwise Catalina volume icon produces incorrect result for png and I don't know why
NSData *data0 = [wantedRep representationUsingType:NSTIFFFileType properties:prop];
if (data0 == nil) {
NSPrintErr(@"Error creating image data for type %d", NSTIFFFileType);
exit(EX_DATAERR);
}
if (imgType != NSTIFFFileType) {
// convert to wanted type
NSBitmapImageRep *brep2 = [[NSBitmapImageRep alloc] initWithData: data0];
data = [brep2 representationUsingType:imgType properties:prop];
}
else {
data = data0;
}
if (data == nil) {
NSPrintErr(@"Error creating image data for type %d", imgType);
exit(EX_DATAERR);
}
if ([data writeToFile:destPath atomically:YES] == NO) {
NSPrintErr(@"Error writing image to destination");
exit(EX_IOERR);
}
return EXIT_SUCCESS;
}}
static NSUInteger ImageTypeForSuffix(NSString *suffix) {
NSDictionary *map = @{ @"jpg" : @(NSJPEGFileType),
@"jpeg": @(NSJPEGFileType),
@"png": @(NSPNGFileType),
@"gif": @(NSGIFFileType),
@"tiff": @(NSTIFFFileType),
@"bmp": @(NSBMPFileType) };
NSString *s = [suffix lowercaseString];
NSNumber *imgTypeNum = map[s];
if (!imgTypeNum) {
return -1;
}
return [imgTypeNum unsignedIntegerValue];
}
static void PrintHelp(void) {
NSPrintErr(@"usage: icns2image src dest");
}