Re: converting/reading input argument as utf8
Re: converting/reading input argument as utf8
- Subject: Re: converting/reading input argument as utf8
- From: Camillo Lugaresi <email@hidden>
- Date: Thu, 2 Feb 2006 23:12:30 +0100
Additionally, remember that you must release objects created using
alloc+init. You're leaking strings all over the place.
On 02/feb/06, at 21:56, Deborah Goldsmith wrote:
The encoding for %s is the legacy Mac encoding
(CFStringGetSystemEncoding()), not UTF-8. If you're running in
English, that's MacRoman.
You cannot use %s to convert UTF-8 to UTF-16. Use [NSString
stringWithUTF8String] instead.
Deborah Goldsmith
Internationalization, Unicode liaison
Apple Computer, Inc.
email@hidden
On Feb 2, 2006, at 2:24 AM, koen gogne wrote:
Hi all,
i'm quite new to cocoa programming,
and i have a question on the use of utf8 input arguments
Below you'll find some code that creates a thumbnail
per page for a given input file to a given output location
this workes fine as long as the input given does simple ascii
characters
once i try using utf8 characters my input gets transferred
incorrectly,
and the input file is not found and hence not read correctly,
so no thumbs could be made.
an example:
this works perfectly:
/Users/demo/myprogram /Volumes/vol1/input/file.pdf /Volumes/vol1/
output/out
this gets scrambled incorrectly:
/Users/demo/myprogram /Volumes/vol1/ïnpût/filé.pdf /Volumes/vol1/
output/out
my code:
int main (int argc, const char *argv[])
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSLog([[NSString alloc] initWithFormat:@"Processing file '%s' to
'%s'.",argv[1], argv[2]]);
NSString *inpath;
NSString *outpath;
inpath = [[[NSString alloc] initWithFormat:@"%s",argv[1]]
stringByExpandingTildeInPath];
NSURL * url = [NSURL fileURLWithPath:inpath];
CGImageSourceRef source = CGImageSourceCreateWithURL((CFURLRef)
url, NULL);
if (source)
{
NSDictionary* thumbOpts = [NSDictionary
dictionaryWithObjectsAndKeys:
(id)kCFBooleanTrue, (id)
kCGImageSourceCreateThumbnailWithTransform,
(id)kCFBooleanTrue, (id)
kCGImageSourceCreateThumbnailFromImageIfAbsent,
nil];
size_t count = CGImageSourceGetCount(source);
integer_t i = 0;
if ((count == 0))
{
CGImageRef image = CGImageSourceCreateThumbnailAtIndex(source,
0, (CFDictionaryRef)thumbOpts);
outpath = [[[NSString alloc] initWithFormat:@"%s.jpg",argv[2]]
stringByExpandingTildeInPath];
NSURL * outurl = [NSURL fileURLWithPath: outpath];
CGImageDestinationRef ref = CGImageDestinationCreateWithURL
((CFURLRef)outurl, (CFStringRef)@"public.jpeg", 1, NULL);
// add image to the ImageIO destination (specify the image we
want to save)
CGImageDestinationAddImage(ref, image, NULL);
if (!CGImageDestinationFinalize(ref))
{
NSLog([[NSString alloc] initWithString:@"Error writing JPEG
file\n"]);
}
CFRelease(ref);
CGImageRelease(image);
}
else
{
while ((i < count)) {
CGImageRef image = CGImageSourceCreateThumbnailAtIndex(source,
i, (CFDictionaryRef)thumbOpts);
outpath = [[[NSString alloc] initWithFormat:@"%s%i.jpg",argv
[2],i+1] stringByExpandingTildeInPath];
NSURL * outurl = [NSURL fileURLWithPath: outpath];
CGImageDestinationRef ref = CGImageDestinationCreateWithURL
((CFURLRef)outurl, (CFStringRef)@"public.jpeg", 1, NULL);
// add image to the ImageIO destination (specify the image we
want to save)
CGImageDestinationAddImage(ref, image, NULL);
if (!CGImageDestinationFinalize(ref))
{
NSLog([[NSString alloc] initWithString:@"Error writing JPEG
file\n"]);
}
CFRelease(ref);
CGImageRelease(image);
i++;
}
}
}
else // couldn't make image source for image, so display nothing
{
NSLog([[NSString alloc] initWithString:@"Error reading source
file\n"]);
}
[pool release];
return 1;
}
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