fontconfig/fcprivate.h

   1 /*
   2  * fontconfig/fontconfig/fcprivate.h
   3  *
   4  * Copyright © 2001 Keith Packard
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and its
   7  * documentation for any purpose is hereby granted without fee, provided that
   8  * the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of the author(s) not be used in
  11  * advertising or publicity pertaining to distribution of the software without
  12  * specific, written prior permission.  The authors make no
  13  * representations about the suitability of this software for any purpose.  It
  14  * is provided "as is" without express or implied warranty.
  15  *
  16  * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  17  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  18  * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  19  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  20  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  21  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  22  * PERFORMANCE OF THIS SOFTWARE.
  23  */
  24
  25 #ifndef _FCPRIVATE_H_
  26 #define _FCPRIVATE_H_
  27
  28 /*
  29  * I tried this with functions that took va_list* arguments
  30  * but portability concerns made me change these functions
  31  * into macros (sigh).
  32  */
  33
  34 #define FcPatternVapBuild(result, orig, va)                         \
  35 {                                                                   \
  36     FcPattern   *__p__ = (orig);                                    \
  37     const char  *__o__;                                             \
  38     FcValue     __v__;                                              \
  39                                                                     \
  40     if (!__p__)                                                     \
  41     {                                                               \
  42         __p__ = FcPatternCreate ();                                 \
  43         if (!__p__)                                                 \
  44             goto _FcPatternVapBuild_bail0;                          \
  45     }                                                               \
  46     for (;;)                                                        \
  47     {                                                               \
  48         __o__ = va_arg (va, const char *);                          \
  49         if (!__o__)                                                 \
  50             break;                                                  \
  51         __v__.type = va_arg (va, FcType);                           \
  52         switch (__v__.type) {                                       \
  53         case FcTypeVoid:                                            \
  54             goto _FcPatternVapBuild_bail1;                          \
  55         case FcTypeInteger:                                         \
  56             __v__.u.i = va_arg (va, int);                           \
  57             break;                                                  \
  58         case FcTypeDouble:                                          \
  59             __v__.u.d = va_arg (va, double);                        \
  60             break;                                                  \
  61         case FcTypeString:                                          \
  62             __v__.u.s = va_arg (va, const FcChar8 *);               \
  63             break;                                                  \
  64         case FcTypeBool:                                            \
  65             __v__.u.b = va_arg (va, FcBool);                        \
  66             break;                                                  \
  67         case FcTypeMatrix:                                          \
  68             __v__.u.m = va_arg (va, const FcMatrix *);              \
  69             break;                                                  \
  70         case FcTypeCharSet:                                         \
  71             __v__.u.c = va_arg (va, const FcCharSet *);             \
  72             break;                                                  \
  73         case FcTypeFTFace:                                          \
  74             __v__.u.f = va_arg (va, FT_Face);                       \
  75             break;                                                  \
  76         case FcTypeLangSet:                                         \
  77             __v__.u.l = va_arg (va, const FcLangSet *);             \
  78             break;                                                  \
  79         }                                                           \
  80         if (!FcPatternAdd (__p__, __o__, __v__, FcTrue))            \
  81             goto _FcPatternVapBuild_bail1;                          \
  82     }                                                               \
  83     result = __p__;                                                 \
  84     goto _FcPatternVapBuild_return;                                 \
  85                                                                     \
  86 _FcPatternVapBuild_bail1:                                           \
  87     if (!orig)                                                      \
  88         FcPatternDestroy (__p__);                                   \
  89 _FcPatternVapBuild_bail0:                                           \
  90     result = (void*)0;                                              \
  91                                                                     \
  92 _FcPatternVapBuild_return:                                          \
  93     ;                                                               \
  94 }
  95
  96
  97 #define FcObjectSetVapBuild(__ret__, __first__, __va__)                 \
  98 {                                                                       \
  99     FcObjectSet    *__os__;                                             \
 100     const char      *__ob__;                                            \
 101                                                                         \
 102     __ret__ = 0;                                                        \
 103     __os__ = FcObjectSetCreate ();                                      \
 104     if (!__os__)                                                        \
 105         goto _FcObjectSetVapBuild_bail0;                                \
 106     __ob__ = __first__;                                                 \
 107     while (__ob__)                                                      \
 108     {                                                                   \
 109         if (!FcObjectSetAdd (__os__, __ob__))                           \
 110             goto _FcObjectSetVapBuild_bail1;                            \
 111         __ob__ = va_arg (__va__, const char *);                         \
 112     }                                                                   \
 113     __ret__ = __os__;                                                   \
 114                                                                         \
 115 _FcObjectSetVapBuild_bail1:                                             \
 116     if (!__ret__ && __os__)                                             \
 117         FcObjectSetDestroy (__os__);                                    \
 118 _FcObjectSetVapBuild_bail0:                                             \
 119     ;                                                                   \
 120 }
 121
 122 #endif /* _FCPRIVATE_H_ */
 123