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/*
* fontconfig/src/fcblanks.c
*
* Copyright © 2002 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the author(s) not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "fcint.h"
FcBlanks *
FcBlanksCreate (void)
{
FcBlanks *b;
b = malloc (sizeof (FcBlanks));
if (!b)
return 0;
b->nblank = 0;
b->sblank = 0;
b->blanks = 0;
return b;
}
void
FcBlanksDestroy (FcBlanks *b)
{
if (b->sblank == -1)
return;
if (b->blanks)
free (b->blanks);
free (b);
}
FcBool
FcBlanksAdd (FcBlanks *b, FcChar32 ucs4)
{
FcChar32 *c;
int sblank;
for (sblank = 0; sblank < b->nblank; sblank++)
if (b->blanks[sblank] == ucs4)
return FcTrue;
if (b->sblank == -1)
{
fprintf (stderr, "Unable to update the static FcBlanks: 0x%04x\n", ucs4);
return FcTrue;
}
if (b->nblank == b->sblank)
{
sblank = b->sblank + 32;
if (b->blanks)
c = (FcChar32 *) realloc (b->blanks, sblank * sizeof (FcChar32));
else
c = (FcChar32 *) malloc (sblank * sizeof (FcChar32));
if (!c)
return FcFalse;
b->sblank = sblank;
b->blanks = c;
}
b->blanks[b->nblank++] = ucs4;
return FcTrue;
}
FcBool
FcBlanksIsMember (FcBlanks *b, FcChar32 ucs4)
{
int lower = 0, higher = b->nblank, middle;
if (b->nblank == 0 ||
b->blanks[0] > ucs4 ||
b->blanks[b->nblank - 1] < ucs4)
return FcFalse;
while (1)
{
middle = (lower + higher) / 2;
if (b->blanks[middle] == ucs4)
return FcTrue;
if (middle == lower ||
middle == higher)
break;
if (b->blanks[middle] < ucs4)
lower = middle + 1;
else
higher = middle - 1;
}
return FcFalse;
}
#define __fcblanks__
#include "fcaliastail.h"
#undef __fcblanks__
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