Thread-topic: converting / reading input arguments as utf8
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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