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