/[pcre]/code/trunk/dftables.c
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revision 65 by nigel, Sat Feb 24 21:40:08 2007 UTC revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC
# Line 2  Line 2 
2  *      Perl-Compatible Regular Expressions       *  *      Perl-Compatible Regular Expressions       *
3  *************************************************/  *************************************************/
4    
5  /*  /* PCRE is a library of functions to support regular expressions whose syntax
 PCRE is a library of functions to support regular expressions whose syntax  
6  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
7    
8  Written by: Philip Hazel <ph10@cam.ac.uk>                         Written by Philip Hazel
9               Copyright (c) 1997-2006 University of Cambridge
10    
            Copyright (c) 1997-2001 University of Cambridge  
   
 -----------------------------------------------------------------------------  
 Permission is granted to anyone to use this software for any purpose on any  
 computer system, and to redistribute it freely, subject to the following  
 restrictions:  
   
 1. This software is distributed in the hope that it will be useful,  
    but WITHOUT ANY WARRANTY; without even the implied warranty of  
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
   
 2. The origin of this software must not be misrepresented, either by  
    explicit claim or by omission.  
   
 3. Altered versions must be plainly marked as such, and must not be  
    misrepresented as being the original software.  
   
 4. If PCRE is embedded in any software that is released under the GNU  
    General Purpose Licence (GPL), then the terms of that licence shall  
    supersede any condition above with which it is incompatible.  
11  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
12    Redistribution and use in source and binary forms, with or without
13    modification, are permitted provided that the following conditions are met:
14    
15        * Redistributions of source code must retain the above copyright notice,
16          this list of conditions and the following disclaimer.
17    
18  See the file Tech.Notes for some information on the internals.      * Redistributions in binary form must reproduce the above copyright
19          notice, this list of conditions and the following disclaimer in the
20          documentation and/or other materials provided with the distribution.
21    
22        * Neither the name of the University of Cambridge nor the names of its
23          contributors may be used to endorse or promote products derived from
24          this software without specific prior written permission.
25    
26    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
30    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36    POSSIBILITY OF SUCH DAMAGE.
37    -----------------------------------------------------------------------------
38  */  */
39    
40    
41  /* This is a support program to generate the file chartables.c, containing  /* This is a freestanding support program to generate a file containing default
42  character tables of various kinds. They are built according to the default C  character tables for PCRE. The tables are built according to the default C
43  locale and used as the default tables by PCRE. Now that pcre_maketables is  locale. Now that pcre_maketables is a function visible to the outside world, we
44  a function visible to the outside world, we make use of its code from here in  make use of its code from here in order to be consistent. */
 order to be consistent. */  
45    
46  #include <ctype.h>  #include <ctype.h>
47  #include <stdio.h>  #include <stdio.h>
48  #include <string.h>  #include <string.h>
49    
50  #include "internal.h"  #include "pcre_internal.h"
51    
52  #define DFTABLES          /* maketables.c notices this */  #define DFTABLES          /* pcre_maketables.c notices this */
53  #include "maketables.c"  #include "pcre_maketables.c"
54    
55    
56  int main(void)  int main(int argc, char **argv)
57  {  {
58  int i;  int i;
59    FILE *f;
60  const unsigned char *tables = pcre_maketables();  const unsigned char *tables = pcre_maketables();
61    const unsigned char *base_of_tables = tables;
62    
63    if (argc != 2)
64      {
65      fprintf(stderr, "dftables: one filename argument is required\n");
66      return 1;
67      }
68    
69    f = fopen(argv[1], "wb");
70    if (f == NULL)
71      {
72      fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
73      return 1;
74      }
75    
76  /* There are two printf() calls here, because gcc in pedantic mode complains  /* There are two fprintf() calls here, because gcc in pedantic mode complains
77  about the very long string otherwise. */  about the very long string otherwise. */
78    
79  printf(  fprintf(f,
80    "/*************************************************\n"    "/*************************************************\n"
81    "*      Perl-Compatible Regular Expressions       *\n"    "*      Perl-Compatible Regular Expressions       *\n"
82    "*************************************************/\n\n"    "*************************************************/\n\n"
83    "/* This file is automatically written by the dftables auxiliary \n"    "/* This file is automatically written by the dftables auxiliary \n"
84    "program. If you edit it by hand, you might like to edit the Makefile to \n"    "program. If you edit it by hand, you might like to edit the Makefile to \n"
85    "prevent its ever being regenerated.\n\n");    "prevent its ever being regenerated.\n\n");
86  printf(  fprintf(f,
87    "This file is #included in the compilation of pcre.c to build the default\n"    "This file contains the default tables for characters with codes less than\n"
88    "character tables which are used when no tables are passed to the compile\n"    "128 (ASCII characters). These tables are used when no external tables are\n"
89    "function. */\n\n"    "passed to PCRE. */\n\n"
90    "static unsigned char pcre_default_tables[] = {\n\n"    "const unsigned char _pcre_default_tables[] = {\n\n"
91    "/* This table is a lower casing table. */\n\n");    "/* This table is a lower casing table. */\n\n");
92    
93  printf("  ");  fprintf(f, "  ");
94  for (i = 0; i < 256; i++)  for (i = 0; i < 256; i++)
95    {    {
96    if ((i & 7) == 0 && i != 0) printf("\n  ");    if ((i & 7) == 0 && i != 0) fprintf(f, "\n  ");
97    printf("%3d", *tables++);    fprintf(f, "%3d", *tables++);
98    if (i != 255) printf(",");    if (i != 255) fprintf(f, ",");
99    }    }
100  printf(",\n\n");  fprintf(f, ",\n\n");
101    
102  printf("/* This table is a case flipping table. */\n\n");  fprintf(f, "/* This table is a case flipping table. */\n\n");
103    
104  printf("  ");  fprintf(f, "  ");
105  for (i = 0; i < 256; i++)  for (i = 0; i < 256; i++)
106    {    {
107    if ((i & 7) == 0 && i != 0) printf("\n  ");    if ((i & 7) == 0 && i != 0) fprintf(f, "\n  ");
108    printf("%3d", *tables++);    fprintf(f, "%3d", *tables++);
109    if (i != 255) printf(",");    if (i != 255) fprintf(f, ",");
110    }    }
111  printf(",\n\n");  fprintf(f, ",\n\n");
112    
113  printf(  fprintf(f,
114    "/* This table contains bit maps for various character classes.\n"    "/* This table contains bit maps for various character classes.\n"
115    "Each map is 32 bytes long and the bits run from the least\n"    "Each map is 32 bytes long and the bits run from the least\n"
116    "significant end of each byte. The classes that have their own\n"    "significant end of each byte. The classes that have their own\n"
117    "maps are: space, xdigit, digit, upper, lower, word, graph\n"    "maps are: space, xdigit, digit, upper, lower, word, graph\n"
118    "print, punct, and cntrl. Other classes are built from combinations. */\n\n");    "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
119    
120  printf("  ");  fprintf(f, "  ");
121  for (i = 0; i < cbit_length; i++)  for (i = 0; i < cbit_length; i++)
122    {    {
123    if ((i & 7) == 0 && i != 0)    if ((i & 7) == 0 && i != 0)
124      {      {
125      if ((i & 31) == 0) printf("\n");      if ((i & 31) == 0) fprintf(f, "\n");
126      printf("\n  ");      fprintf(f, "\n  ");
127      }      }
128    printf("0x%02x", *tables++);    fprintf(f, "0x%02x", *tables++);
129    if (i != cbit_length - 1) printf(",");    if (i != cbit_length - 1) fprintf(f, ",");
130    }    }
131  printf(",\n\n");  fprintf(f, ",\n\n");
132    
133  printf(  fprintf(f,
134    "/* This table identifies various classes of character by individual bits:\n"    "/* This table identifies various classes of character by individual bits:\n"
135    "  0x%02x   white space character\n"    "  0x%02x   white space character\n"
136    "  0x%02x   letter\n"    "  0x%02x   letter\n"
# Line 123  printf( Line 141  printf(
141    ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,    ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
142    ctype_meta);    ctype_meta);
143    
144  printf("  ");  fprintf(f, "  ");
145  for (i = 0; i < 256; i++)  for (i = 0; i < 256; i++)
146    {    {
147    if ((i & 7) == 0 && i != 0)    if ((i & 7) == 0 && i != 0)
148      {      {
149      printf(" /* ");      fprintf(f, " /* ");
150      if (isprint(i-8)) printf(" %c -", i-8);      if (isprint(i-8)) fprintf(f, " %c -", i-8);
151        else printf("%3d-", i-8);        else fprintf(f, "%3d-", i-8);
152      if (isprint(i-1)) printf(" %c ", i-1);      if (isprint(i-1)) fprintf(f, " %c ", i-1);
153        else printf("%3d", i-1);        else fprintf(f, "%3d", i-1);
154      printf(" */\n  ");      fprintf(f, " */\n  ");
155      }      }
156    printf("0x%02x", *tables++);    fprintf(f, "0x%02x", *tables++);
157    if (i != 255) printf(",");    if (i != 255) fprintf(f, ",");
158    }    }
159    
160  printf("};/* ");  fprintf(f, "};/* ");
161  if (isprint(i-8)) printf(" %c -", i-8);  if (isprint(i-8)) fprintf(f, " %c -", i-8);
162    else printf("%3d-", i-8);    else fprintf(f, "%3d-", i-8);
163  if (isprint(i-1)) printf(" %c ", i-1);  if (isprint(i-1)) fprintf(f, " %c ", i-1);
164    else printf("%3d", i-1);    else fprintf(f, "%3d", i-1);
165  printf(" */\n\n/* End of chartables.c */\n");  fprintf(f, " */\n\n/* End of chartables.c */\n");
166    
167    fclose(f);
168    free((void *)base_of_tables);
169  return 0;  return 0;
170  }  }
171    
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