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Add Cocoa clipboard handler to replace Carbon/SDL2 handlers for Mac O…
…S. (#295) * Add Cocoa clipboard handler. * Update Xcode project.
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| /* MegaZeux | ||
| * | ||
| * Copyright (C) 2021 Alice Rowan <petrifiedrowan@gmail.com> | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License as | ||
| * published by the Free Software Foundation; either version 2 of | ||
| * the License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| * General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
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| #include <Foundation/Foundation.h> | ||
| #include <AppKit/NSPasteboard.h> | ||
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| #include <stdlib.h> | ||
| #include <string.h> | ||
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| #include "clipboard.h" | ||
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| /** | ||
| * Native MacOS clipboard handler using AppKit. Unlike the SDL2 clipboard | ||
| * handler, this handler treats the input text as being encoded in Mac OS Roman | ||
| * (unlike ISO Latin-1, Windows 1292, etc, all 256 codepoints of Mac OS Roman | ||
| * will be encoded as valid UTF-8 symbols). | ||
| * | ||
| * Notes: | ||
| * - Literal arrays require LLVM 3.1, so explicitly allocate NSArrays. | ||
| * - @autoreleasepool requires LLVM 3.0, so use NSAutoreleasePool directly. | ||
| */ | ||
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| /** | ||
| * Send an array of extended ASCII lines to the system clipboard via Cocoa. | ||
| * These lines will be re-encoded to UTF-8 using Mac OS Roman codepoints. | ||
| */ | ||
| void copy_buffer_to_clipboard(char **buffer, int lines, int total_length) | ||
| { | ||
| NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; | ||
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| char *buf = cmalloc(total_length + 1); | ||
| char *pos = buf; | ||
| for(int i = 0; i < lines; i++) | ||
| { | ||
| size_t len = strlen(buffer[i]); | ||
| memcpy(pos, buffer[i], len); | ||
| pos += len; | ||
| *(pos++) = '\n'; | ||
| } | ||
| buf[total_length] = '\0'; | ||
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| /* Convert to NSString. NOTE: this function requires 10.3+, haven't | ||
| * looked for a compelling way to do this for 10.0. | ||
| */ | ||
| NSString *string = [[[NSString alloc] initWithBytes:buf length:total_length | ||
| encoding:NSMacOSRomanStringEncoding] autorelease]; | ||
| free(buf); | ||
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| NSPasteboard *pasteboard = [NSPasteboard generalPasteboard]; | ||
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| #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1060 | ||
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| [pasteboard clearContents]; | ||
| [pasteboard writeObjects:[NSArray arrayWithObject:string]]; | ||
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| #else /* VERSION_MIN < 1060 */ | ||
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| [pasteboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil]; | ||
| [pasteboard setString:string forType:NSStringPboardType]; | ||
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| #endif /* VERSION_MIN < 1060 */ | ||
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| [pool release]; | ||
| } | ||
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| /** | ||
| * Fetch an extended ASCII buffer from the system clipboard via Cocoa. | ||
| * These lines will be re-encoded from UTF-8 using Mac OS Roman codepoints. | ||
| */ | ||
| char *get_clipboard_buffer(void) | ||
| { | ||
| NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; | ||
| NSPasteboard *pasteboard = [NSPasteboard generalPasteboard]; | ||
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| #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1060 | ||
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| NSArray *for_classes = [NSArray arrayWithObject:[NSString class]]; | ||
| NSArray *items = [pasteboard readObjectsForClasses:for_classes options:nil]; | ||
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| NSString *string = items && [items count] ? [items objectAtIndex:0] : nil; | ||
| if(!string) | ||
| goto err; | ||
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| #else /* VERSION_MIN < 1060 */ | ||
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| NSArray *types = [NSArray arrayWithObject:NSStringPboardType]; | ||
| if(![pasteboard availableTypeFromArray:types]) | ||
| goto err; | ||
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| NSString *string = [pasteboard stringForType:NSStringPboardType]; | ||
| if(!string) | ||
| goto err; | ||
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| #endif /* VERSION_MIN < 1060 */ | ||
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| NSData *chrdata = [string dataUsingEncoding:NSMacOSRomanStringEncoding | ||
| allowLossyConversion:true]; | ||
| if(!chrdata) | ||
| goto err; | ||
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| size_t buf_len = [chrdata length]; | ||
| char *buf = cmalloc(buf_len + 1); | ||
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| [chrdata getBytes:buf length:buf_len]; | ||
| buf[buf_len] = '\0'; | ||
| [pool release]; | ||
| return buf; | ||
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| err: | ||
| [pool release]; | ||
| return NULL; | ||
| } |