fc-arch/fc-arch.c

   1 /*
   2  * Copyright © 2006 Keith Packard
   3  * Copyright © 2005 Patrick Lam
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that copyright
   8  * notice and this permission notice appear in supporting documentation, and
   9  * that the name of the copyright holders not be used in advertising or
  10  * publicity pertaining to distribution of the software without specific,
  11  * written prior permission.  The copyright holders make no representations
  12  * about the suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  17  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  18  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  19  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  20  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21  * OF THIS SOFTWARE.
  22  */
  23
  24 #include "fcint.h"
  25 #include <ctype.h>
  26
  27 #define ENDIAN_TEST 0x01020304
  28 #define MACHINE_SIGNATURE_SIZE 1024
  29
  30 static char *
  31 FcCacheMachineSignature (void)
  32 {
  33     static char buf[MACHINE_SIGNATURE_SIZE];
  34     int32_t magic = ENDIAN_TEST;
  35     char * m = (char *)&magic;
  36
  37     sprintf (buf, "%01x%01x%01x%01x_"
  38              "%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_"
  39              "%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x_%02x",
  40              m[0], m[1], m[2], m[3],
  41              (unsigned int)sizeof (FcAlign),
  42              (unsigned int)sizeof (char),
  43              (unsigned int)sizeof (char *),
  44              (unsigned int)sizeof (int),
  45              (unsigned int)sizeof (intptr_t),
  46              (unsigned int)sizeof (FcPattern),
  47              (unsigned int)sizeof (FcPatternEltPtr),
  48              (unsigned int)sizeof (struct  FcPatternElt *),
  49              (unsigned int)sizeof (FcPatternElt),
  50              (unsigned int)sizeof (FcObject),
  51              (unsigned int)sizeof (FcValueListPtr),
  52              (unsigned int)sizeof (FcValue),
  53              (unsigned int)sizeof (FcValueBinding),
  54              (unsigned int)sizeof (struct  FcValueList *),
  55              (unsigned int)sizeof (FcStrSet *), /* For FcLangSet */
  56              (unsigned int)sizeof (FcCharSet),
  57              (unsigned int)sizeof (FcCharLeaf **),
  58              (unsigned int)sizeof (FcChar16 *),
  59              (unsigned int)sizeof (FcChar16),
  60              (unsigned int)sizeof (FcCharLeaf),
  61              (unsigned int)sizeof (FcChar32),
  62              (unsigned int)sizeof (FcCache));
  63
  64     return buf;
  65 }
  66
  67 int
  68 main (int argc, char **argv)
  69 {
  70     static char         line[1024];
  71     char                *signature;
  72     int                 signature_length;
  73     char                *space;
  74     char                *arch = NULL;
  75     int                 lineno = 0;
  76
  77     if (argc != 2)
  78         fprintf (stderr, "Usage: %s <architecture>|auto < fcarch.tmpl.h > fcarch.h\n",
  79                  argv[0]);
  80     arch = argv[1];
  81     /*
  82      * Scan the input until the marker is found
  83      */
  84
  85     while (fgets (line, sizeof (line), stdin))
  86     {
  87         lineno++;
  88         if (!strncmp (line, "@@@", 3))
  89             break;
  90         fputs (line, stdout);
  91     }
  92     signature = FcCacheMachineSignature();
  93     signature_length = strlen (signature);
  94
  95     if (strcmp (arch, "auto") == 0)
  96     {
  97         arch = NULL;
  98         /*
  99          * Search for signature
 100          */
 101         while (fgets (line, sizeof (line), stdin))
 102         {
 103             lineno++;
 104             /*
 105              * skip comments
 106              */
 107             if (!strncmp (line, "@@@", 3))
 108                 continue;
 109             space = line;
 110             while (*space && !isspace (*space))
 111                 space++;
 112             if (!space)
 113             {
 114                 fprintf (stderr, "%s: malformed input on line %d\n",
 115                          argv[0], lineno);
 116                 exit (1);
 117             }
 118             *space++ = '\0';
 119             while (isspace (*space))
 120                 space++;
 121             if (!strncmp (space, signature, signature_length))
 122             {
 123                 arch = line;
 124                 break;
 125             }
 126         }
 127     }
 128     if (!arch)
 129     {
 130         fprintf (stderr, "%s: unknown signature \"%s\"\n", argv[0], signature);
 131         fprintf (stderr, "\tPlease update fcarch.tmpl.h and rebuild\n");
 132         exit (1);
 133     }
 134     printf ("#define FC_ARCHITECTURE \"%s\"\n", arch);
 135     fflush (stdout);
 136     exit (ferror (stdout));
 137 }
 138