frontend/info.cpp

   1 // info.cpp
   2
   3 // Copyright (C) 2012 by Werner Lemberg.
   4 //
   5 // This file is part of the ttfautohint library, and may only be used,
   6 // modified, and distributed under the terms given in `COPYING'.  By
   7 // continuing to use, modify, or distribute this file you indicate that you
   8 // have read `COPYING' and understand and accept it fully.
   9 //
  10 // The file `COPYING' mentioned in the previous paragraph is distributed
  11 // with the ttfautohint library.
  12
  13
  14 #include <config.h>
  15 #include <stdio.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18
  19 #include "info.h"
  20
  21
  22 // build string which gets appended to the `Version' field(s)
  23
  24 extern "C" {
  25
  26 void
  27 build_version_string(Info_Data* idata)
  28 {
  29   char* d;
  30   char* dw;
  31
  32   d = (char*)idata->data;
  33   d += sprintf(d, "; ttfautohint (v%s)", VERSION);
  34
  35   if (idata->hinting_range_min != TA_HINTING_RANGE_MIN)
  36     d += sprintf(d, " -l %d", idata->hinting_range_min);
  37   if (idata->hinting_range_max != TA_HINTING_RANGE_MAX)
  38     d += sprintf(d, " -r %d", idata->hinting_range_max);
  39   if (idata->hinting_limit != TA_HINTING_LIMIT)
  40     d += sprintf(d, " -G %d", idata->hinting_limit);
  41
  42   if (idata->pre_hinting)
  43     d += sprintf(d, " -p");
  44   if (idata->increase_x_height)
  45     d += sprintf(d, " -x");
  46   if (idata->latin_fallback)
  47     d += sprintf(d, " -f");
  48   if (idata->symbol)
  49     d += sprintf(d, " -s");
  50
  51   idata->data_len = d - (char*)idata->data;
  52
  53   // prepare UTF16-BE version data
  54   d = (char*)idata->data;
  55   dw = (char*)idata->data_wide;
  56   for (unsigned short i = 0; i < idata->data_len; i++)
  57   {
  58     *(dw++) = '\0';
  59     *(dw++) = *(d++);
  60   }
  61   idata->data_wide_len = idata->data_len << 1;
  62 }
  63
  64
  65 int
  66 info(unsigned short platform_id,
  67      unsigned short encoding_id,
  68      unsigned short /* language_id */,
  69      unsigned short name_id,
  70      unsigned short* len,
  71      unsigned char** str,
  72      void* user)
  73 {
  74   Info_Data* idata = (Info_Data*)user;
  75   unsigned char* v;
  76   unsigned short v_len;
  77
  78   // if it is a version string, append our data
  79   if (name_id != 5)
  80     return 0;
  81
  82   if (platform_id == 1
  83       || (platform_id == 3 && !(encoding_id == 1
  84                                 || encoding_id == 10)))
  85   {
  86     // one-byte or multi-byte encodings
  87     v = idata->data;
  88     v_len = idata->data_len;
  89   }
  90   else
  91   {
  92     // (two-byte) UTF-16BE for everything else
  93     v = idata->data_wide;
  94     v_len = idata->data_wide_len;
  95   }
  96
  97   // do nothing if the string would become too long
  98   if (*len > 0xFFFF - v_len)
  99     return 0;
 100
 101   unsigned short len_new = *len + v_len;
 102   unsigned char* str_new = (unsigned char*)realloc(*str, len_new);
 103   if (!str_new)
 104     return 1;
 105
 106   *str = str_new;
 107   memcpy(*str + *len, v, v_len);
 108   *len = len_new;
 109
 110   return 0;
 111 }
 112
 113 } // extern "C"
 114
 115 // end of info.cpp