lib/genflags.c

   1 /* Copyright (C) 2000-2002, 2005-2006, 2008-2009, 2016, 2022-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU LIBICONV Library.
   3
   4    The GNU LIBICONV Library is free software; you can redistribute it
   5    and/or modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either version 2.1
   7    of the License, or (at your option) any later version.
   8
   9    The GNU LIBICONV Library is distributed in the hope that it will be
  10    useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU LIBICONV Library; see the file COPYING.LIB.
  16    If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Creates the flags.h include file. */
  19
  20 #include <limits.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 /* Avoid lots of warnings from "gcc -Wall". */
  26 #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 2) || __GNUC__ > 4
  27 # pragma GCC diagnostic ignored "-Wunused-function"
  28 #endif
  29
  30 /* Consider all encodings, including the system dependent ones. */
  31 #define USE_AIX
  32 #define USE_OSF1
  33 #define USE_DOS
  34 #define USE_ZOS
  35 #define USE_EXTRA
  36
  37 struct loop_funcs {};
  38 struct iconv_hooks {};
  39 struct iconv_fallbacks {};
  40 #define ICONV_SURFACE_EBCDIC_ZOS_UNIX  1
  41 #include "converters.h"
  42
  43 static void emit_encoding (struct wctomb_funcs * ofuncs, const char* c_name)
  44 {
  45   /* Prepare a converter struct. */
  46   struct conv_struct conv;
  47   memset(&conv,'\0',sizeof(conv));
  48   conv.ofuncs = *ofuncs;
  49
  50   {
  51     /* See whether the encoding can encode the accents and quotation marks. */
  52     ucs4_t probe[6] = { 0x0060, 0x00b4, 0x2018, 0x2019, 0x3131, 0x3163, };
  53     int res[6];
  54     int i;
  55     for (i = 0; i < 6; i++) {
  56       unsigned char buf[10];
  57       memset(&conv.ostate,'\0',sizeof(state_t));
  58       res[i] = (conv.ofuncs.xxx_wctomb(&conv,buf,probe[i],sizeof(buf)) != RET_ILUNI);
  59     }
  60     printf("#define ei_%s_oflags (",c_name);
  61     {
  62       int first = 1;
  63       if (res[0] && res[1]) {
  64         printf("HAVE_ACCENTS");
  65         first = 0;
  66       }
  67       if (res[2] && res[3]) {
  68         if (!first) printf(" | ");
  69         printf("HAVE_QUOTATION_MARKS");
  70         first = 0;
  71       }
  72       if (res[4] && res[5]) {
  73         if (!first) printf(" | ");
  74         printf("HAVE_HANGUL_JAMO");
  75         first = 0;
  76       }
  77       if (first) printf("0");
  78     }
  79     printf(")\n");
  80   }
  81 }
  82
  83 int main ()
  84 {
  85   int bitmask = 1;
  86   printf("/* Generated automatically by genflags. */\n");
  87   printf("\n");
  88   printf("/* Set if the encoding can encode\n");
  89   printf("   the acute and grave accents U+00B4 and U+0060. */\n");
  90   printf("#define HAVE_ACCENTS %d\n",bitmask);
  91   printf("\n");
  92   bitmask = bitmask << 1;
  93   printf("/* Set if the encoding can encode\n");
  94   printf("   the single quotation marks U+2018 and U+2019. */\n");
  95   printf("#define HAVE_QUOTATION_MARKS %d\n",bitmask);
  96   printf("\n");
  97   bitmask = bitmask << 1;
  98   printf("/* Set if the encoding can encode\n");
  99   printf("   the double-width Hangul letters (Jamo) U+3131 to U+3163. */\n");
 100   printf("#define HAVE_HANGUL_JAMO %d\n",bitmask);
 101   printf("\n");
 102
 103 #define DEFENCODING(xxx_names,xxx,xxx_ifuncs1,xxx_ifuncs2,xxx_ofuncs1,xxx_ofuncs2) \
 104   {                                                       \
 105     struct wctomb_funcs ofuncs = xxx_ofuncs1,xxx_ofuncs2; \
 106     emit_encoding(&ofuncs,#xxx);                          \
 107   }
 108 #define DEFALIAS(xxx_alias,xxx) /* nothing */
 109 /* Consider all encodings, including the system dependent ones. */
 110 #include "encodings.def"
 111 #include "encodings_aix.def"
 112 #include "encodings_osf1.def"
 113 #include "encodings_dos.def"
 114 #include "encodings_zos.def"
 115 #include "encodings_extra.def"
 116 #undef DEFALIAS
 117 #undef DEFENCODING
 118
 119   if (ferror(stdout) || fclose(stdout))
 120     exit(1);
 121   exit(0);
 122 }