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@mwender
Last active Apr 27, 2022
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Command line copy an image file to the clipboard in Mac OS X. See first comment for install instructions.
#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
#import <unistd.h>
BOOL copy_to_clipboard(NSString *path)
{
// http://stackoverflow.com/questions/2681630/how-to-read-png-image-to-nsimage
NSImage * image;
if([path isEqualToString:@"-"])
{
// http://caiustheory.com/read-standard-input-using-objective-c
NSFileHandle *input = [NSFileHandle fileHandleWithStandardInput];
image = [[NSImage alloc] initWithData:[input readDataToEndOfFile]];
}else
{
image = [[NSImage alloc] initWithContentsOfFile:path];
}
// http://stackoverflow.com/a/18124824/148668
BOOL copied = false;
if (image != nil)
{
NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
[pasteboard clearContents];
NSArray *copiedObjects = [NSArray arrayWithObject:image];
copied = [pasteboard writeObjects:copiedObjects];
[pasteboard release];
}
[image release];
return copied;
}
int main(int argc, char * const argv[])
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if(argc<2)
{
printf("Usage:\n\n"
"Copy file to clipboard:\n ./impbcopy path/to/file\n\n"
"Copy stdin to clipboard:\n cat /path/to/file | ./impbcopy -");
return EXIT_FAILURE;
}
NSString *path= [NSString stringWithUTF8String:argv[1]];
BOOL success = copy_to_clipboard(path);
[pool release];
return (success?EXIT_SUCCESS:EXIT_FAILURE);
}
@mwender
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mwender commented Feb 13, 2015

Instructions:

  1. Save this gist into a file called impbcopy.m under your $PATH (e.g. /usr/local/bin).
  2. Compile it with gcc -Wall -g -O3 -ObjC -framework Foundation -framework AppKit -o impbcopy impbcopy.m
  3. Now you should be able to run it with impbcopy path/to/file.png

This code courtesy of Alex Jacobson.

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