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Relax check for bad characters ... not a concern if the string data is

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identifiably unicode (ie file begins with unicode BOM) and will therefore
not be interpreted as data in the default encoding.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@19629 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-Macdonald 2004-06-27 09:54:41 +00:00
parent 635e5188fd
commit 0f34bb51fc
1 changed files with 41 additions and 9 deletions
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50
Tools/plparse.m
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@ -28,6 +28,44 @@
#include <Foundation/NSDebug.h>
#include <Foundation/NSAutoreleasePool.h>
/*
* If there is any non-ascii characrer in the string,
* and the file data did not begin with a unicode BOM to identify
* it as unicode data, we return the location of the first
* bad character, otherwise return -1;
*/
static int
firstBadCharacter(NSString *file, NSString *content)
{
static NSCharacterSet *cs = nil;
NSData *d;
NSRange r;
if (cs == nil)
{
cs = [NSCharacterSet characterSetWithRange: NSMakeRange(1, 127)];
cs = RETAIN([cs invertedSet]);
}
r = [content rangeOfCharacterFromSet: cs];
if (r.length == 0)
{
return -1;
}
d = [NSData dataWithContentsOfFile: file];
if ([d length] > 2)
{
const unsigned char *ptr = (const unsigned char*)[d bytes];
if ((ptr[0] == 0xff && ptr[1] == 0xfe) // UCS2
|| (ptr[0] == 0xfe && ptr[1] == 0xff) // UCS2
|| (ptr[0] == 0xef && ptr[1] == 0xbb && ptr[2] == 0xbf)) // UTF8
{
return -1;
}
}
return r.location;
}
/** <p>
This tool checks that a file contains a valid text property-list.
@ -61,12 +99,6 @@ main(int argc, char** argv, char **env)
}
else
{
NSCharacterSet *cs;
cs = [NSCharacterSet characterSetWithRange: NSMakeRange(1, 127)];
cs = [cs invertedSet];
for (i = 1; i < [args count]; i++)
{
NSString *file = [args objectAtIndex: i];
@ -75,14 +107,14 @@ main(int argc, char** argv, char **env)
{
NSString *myString;
id result;
NSRange r;
int bad;
myString = [NSString stringWithContentsOfFile: file];
if (myString == nil)
GSPrintf(stderr, @"Parsing '%@' - not valid string\n", file);
else if ((r = [myString rangeOfCharacterFromSet: cs]).length > 0)
else if ((bad = firstBadCharacter(file, myString)) >= 0)
GSPrintf(stderr, @"Parsing '%@' - bad char '\\U%04x' at %d\n",
file, [myString characterAtIndex: r.location], r.location);
file, [myString characterAtIndex: bad], bad);
else if ((result = [myString propertyList]) == nil)
GSPrintf(stderr, @"Parsing '%@' - nil property list\n", file);
else if ([result isKindOfClass: [NSDictionary class]] == YES)