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* Source/GSGhostscriptImageRep.m: Remove hardcoded path to gs

Browse source 
executable. First try GSGhostscriptExecutablePath default, then
try running "$SHELL -c which gs" to get the path.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@33505 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Eric Wasylishen 2011-07-10 22:41:35 +00:00
parent 34266c025a
commit 74e522c0c2
2 changed files with 84 additions and 23 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
2011-07-10 Eric Wasylishen <ewasylishen@gmail.com>
* Source/GSGhostscriptImageRep.m: Remove hardcoded path to gs
executable. First try GSGhostscriptExecutablePath default, then
try running "$SHELL -c which gs" to get the path.
2011-07-08 Eric Wasylishen <ewasylishen@gmail.com>
* Source/NSView.m (-resizeWithOldSuperviewSize:): Factor out

101
Source/GSGhostscriptImageRep.m
View file

@ -28,9 +28,14 @@
#import <Foundation/NSArray.h>
#import <Foundation/NSAffineTransform.h>
#import <Foundation/NSCharacterSet.h>
#import <Foundation/NSCoder.h>
#import <Foundation/NSData.h>
#import <Foundation/NSException.h>
#import <Foundation/NSProcessInfo.h>
#import <Foundation/NSString.h>
#import <Foundation/NSTask.h>
#import <Foundation/NSUserDefaults.h>
#import "AppKit/NSImageRep.h"
#import "AppKit/NSPasteboard.h"
#import "AppKit/NSGraphicsContext.h"
@ -89,6 +94,49 @@
return types;
}
- (NSString *) _ghostscriptExecutablePath
{
NSString *result = nil;
result = [[NSUserDefaults standardUserDefaults] stringForKey: @"GSGhostscriptExecutablePath"];
if (result == nil)
{
NS_DURING
{
NSTask *task = [[[NSTask alloc] init] autorelease];
NSPipe *outputPipe = [NSPipe pipe];
NSFileHandle *outputHandle = [outputPipe fileHandleForReading];
NSString *shellLaunchPath = [[[NSProcessInfo processInfo] environment] objectForKey: @"SHELL"];
NSData *resultData;
[task setLaunchPath: shellLaunchPath];
[task setArguments: [NSArray arrayWithObjects: @"-c", @"which gs", nil]];
[task setStandardOutput: outputPipe];
[task launch];
resultData = [outputHandle readDataToEndOfFile];
[outputHandle closeFile];
if (resultData != nil && [resultData length] > 0)
{
// FIXME: How do we know which encoding the data will be in?
result = [[[NSString alloc] initWithBytes: [resultData bytes]
length: [resultData length]
encoding: NSUTF8StringEncoding] autorelease];
result = [result stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
}
NS_HANDLER
{
}
NS_ENDHANDLER
}
return result;
}
- (NSData *) _pngWithGhostscriptData: (NSData *)psData atResolution: (CGFloat)res
{
NSTask *task = [[[NSTask alloc] init] autorelease];
@ -96,30 +144,37 @@
NSPipe *outputPipe = [NSPipe pipe];
NSFileHandle *inputHandle = [inputPipe fileHandleForWriting];
NSFileHandle *outputHandle = [outputPipe fileHandleForReading];
NSData *result;
NSData *result = nil;
NSString *launchPath = [self _ghostscriptExecutablePath];
// FIXME: Parameterize
[task setLaunchPath: @"/usr/bin/gs"];
[task setArguments: [NSArray arrayWithObjects: @"-dSAFER",
@"-q",
@"-o",
@"-", // Write output image to stdout
@"-sDEVICE=pngalpha",
[NSString stringWithFormat: @"-r%d", (int)res],
@"-dTextAlphaBits=4",
@"-dGraphicsAlphaBits=4",
@"-dDOINTERPOLATE",
@"-", // Read input from stdin
nil]];
[task setStandardInput: inputPipe];
[task setStandardOutput: outputPipe];
[task launch];
[inputHandle writeData: psData];
[inputHandle closeFile];
result = [outputHandle readDataToEndOfFile];
[outputHandle closeFile];
NS_DURING
{
[task setLaunchPath: launchPath];
[task setArguments: [NSArray arrayWithObjects: @"-dSAFER",
@"-q",
@"-o",
@"-", // Write output image to stdout
@"-sDEVICE=pngalpha",
[NSString stringWithFormat: @"-r%d", (int)res],
@"-dTextAlphaBits=4",
@"-dGraphicsAlphaBits=4",
@"-dDOINTERPOLATE",
@"-", // Read input from stdin
nil]];
[task setStandardInput: inputPipe];
[task setStandardOutput: outputPipe];
[task launch];
[inputHandle writeData: psData];
[inputHandle closeFile];
result = [outputHandle readDataToEndOfFile];
[outputHandle closeFile];
}
NS_HANDLER
{
}
NS_ENDHANDLER
return result;
}