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libiconv

    1: /* Copyright (C) 1999-2001, 2003, 2005, 2008 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 Library General Public
    6:    License as published by the Free Software Foundation; either version 2
    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:    Library General Public License for more details.
   13: 
   14:    You should have received a copy of the GNU Library General Public
   15:    License along with the GNU LIBICONV Library; see the file COPYING.LIB.
   16:    If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
   17:    Fifth Floor, Boston, MA 02110-1301, USA.  */
   18: 
   19: /* Creates the aliases.gperf table. */
   20: 
   21: #include <stdio.h>
   22: #include <stdlib.h>
   23: 
   24: static void emit_alias (FILE* out1, const char* alias, const char* c_name)
   25: {
   26:   /* Output alias in upper case. */
   27:   const char* s = alias;
   28:   for (; *s; s++) {
   29:     unsigned char c = * (unsigned char *) s;
   30:     if (c >= 0x80)
   31:       exit(1);
   32:     if (c >= 'a' && c <= 'z')
   33:       c -= 'a'-'A';
   34:     putc(c, out1);
   35:   }
   36:   fprintf(out1,", ei_%s\n", c_name);
   37: }
   38: 
   39: static void emit_encoding (FILE* out1, FILE* out2, const char* const* names, size_t n, const char* c_name)
   40: {
   41:   fprintf(out2,"grep 'sizeof(\"");
   42:   /* Output *names in upper case. */
   43:   {
   44:     const char* s = *names;
   45:     for (; *s; s++) {
   46:       unsigned char c = * (unsigned char *) s;
   47:       if (c >= 0x80)
   48:         exit(1);
   49:       if (c >= 'a' && c <= 'z')
   50:         c -= 'a'-'A';
   51:       putc(c, out2);
   52:     }
   53:   }
   54:   fprintf(out2,"\")' tmp.h | sed -e 's|^.*\\(stringpool_str[0-9]*\\).*$|  (int)(long)\\&((struct stringpool_t *)0)->\\1,|'\n");
   55:   for (; n > 0; names++, n--)
   56:     emit_alias(out1, *names, c_name);
   57: }
   58: 
   59: int main ()
   60: {
   61:   FILE* stdout2;
   62: 
   63:   printf("struct alias { int name; unsigned int encoding_index; };\n");
   64:   printf("%%struct-type\n");
   65:   printf("%%language=ANSI-C\n");
   66:   printf("%%define hash-function-name aliases_hash\n");
   67:   printf("%%define lookup-function-name aliases_lookup\n");
   68:   printf("%%7bit\n");
   69:   printf("%%readonly-tables\n");
   70:   printf("%%global-table\n");
   71:   printf("%%define word-array-name aliases\n");
   72:   printf("%%pic\n");
   73:   printf("%%%%\n");
   74: 
   75: #define DEFENCODING(xxx_names,xxx,xxx_ifuncs1,xxx_ifuncs2,xxx_ofuncs1,xxx_ofuncs2) \
   76:   {                                                           \
   77:     static const char* const names[] = BRACIFY xxx_names;     \
   78:     emit_encoding(stdout,stdout2,names,sizeof(names)/sizeof(names[0]),#xxx); \
   79:   }
   80: #define BRACIFY(...) { __VA_ARGS__ }
   81: #define DEFALIAS(xxx_alias,xxx) emit_alias(stdout,xxx_alias,#xxx);
   82: 
   83:   stdout2 = fdopen(3, "w");
   84:   if (stdout2 == NULL)
   85:     exit(1);
   86: #include "encodings.def"
   87:   if (fclose(stdout2))
   88:     exit(1);
   89: 
   90:   stdout2 = fdopen(4, "w");
   91:   if (stdout2 == NULL)
   92:     exit(1);
   93: #include "encodings_local.def"
   94:   if (fclose(stdout2))
   95:     exit(1);
   96: 
   97: #undef DEFALIAS
   98: #undef BRACIFY
   99: #undef DEFENCODING
  100: 
  101:   if (ferror(stdout) || fclose(stdout))
  102:     exit(1);
  103:   exit(0);
  104: }