Annotation of embedaddon/php/ext/pcre/pcrelib/dftables.c, revision 1.1.1.1
1.1 misho 1: /*************************************************
2: * Perl-Compatible Regular Expressions *
3: *************************************************/
4:
5: /* 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.
7:
8: Written by Philip Hazel
9: Copyright (c) 1997-2008 University of Cambridge
10:
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: * 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 freestanding support program to generate a file containing
42: character tables for PCRE. The tables are built according to the current
43: locale. Now that pcre_maketables is a function visible to the outside world, we
44: make use of its code from here in order to be consistent. */
45:
46: #include "config.h"
47:
48: #include <ctype.h>
49: #include <stdio.h>
50: #include <string.h>
51: #include <locale.h>
52:
53: #include "pcre_internal.h"
54:
55: #define DFTABLES /* pcre_maketables.c notices this */
56: #include "pcre_maketables.c"
57:
58:
59: int main(int argc, char **argv)
60: {
61: FILE *f;
62: int i = 1;
63: const unsigned char *tables;
64: const unsigned char *base_of_tables;
65:
66: /* By default, the default C locale is used rather than what the building user
67: happens to have set. However, if the -L option is given, set the locale from
68: the LC_xxx environment variables. */
69:
70: if (argc > 1 && strcmp(argv[1], "-L") == 0)
71: {
72: setlocale(LC_ALL, ""); /* Set from environment variables */
73: i++;
74: }
75:
76: if (argc < i + 1)
77: {
78: fprintf(stderr, "dftables: one filename argument is required\n");
79: return 1;
80: }
81:
82: tables = pcre_maketables();
83: base_of_tables = tables;
84:
85: f = fopen(argv[i], "wb");
86: if (f == NULL)
87: {
88: fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
89: return 1;
90: }
91:
92: /* There are several fprintf() calls here, because gcc in pedantic mode
93: complains about the very long string otherwise. */
94:
95: fprintf(f,
96: "/*************************************************\n"
97: "* Perl-Compatible Regular Expressions *\n"
98: "*************************************************/\n\n"
99: "/* This file was automatically written by the dftables auxiliary\n"
100: "program. It contains character tables that are used when no external\n"
101: "tables are passed to PCRE by the application that calls it. The tables\n"
102: "are used only for characters whose code values are less than 256.\n\n");
103: fprintf(f,
104: "The following #includes are present because without them gcc 4.x may remove\n"
105: "the array definition from the final binary if PCRE is built into a static\n"
106: "library and dead code stripping is activated. This leads to link errors.\n"
107: "Pulling in the header ensures that the array gets flagged as \"someone\n"
108: "outside this compilation unit might reference this\" and so it will always\n"
109: "be supplied to the linker. */\n\n"
110: "#ifdef HAVE_CONFIG_H\n"
111: "#include \"config.h\"\n"
112: "#endif\n\n"
113: "#include \"pcre_internal.h\"\n\n");
114: fprintf(f,
115: "const unsigned char _pcre_default_tables[] = {\n\n"
116: "/* This table is a lower casing table. */\n\n");
117:
118: fprintf(f, " ");
119: for (i = 0; i < 256; i++)
120: {
121: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
122: fprintf(f, "%3d", *tables++);
123: if (i != 255) fprintf(f, ",");
124: }
125: fprintf(f, ",\n\n");
126:
127: fprintf(f, "/* This table is a case flipping table. */\n\n");
128:
129: fprintf(f, " ");
130: for (i = 0; i < 256; i++)
131: {
132: if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
133: fprintf(f, "%3d", *tables++);
134: if (i != 255) fprintf(f, ",");
135: }
136: fprintf(f, ",\n\n");
137:
138: fprintf(f,
139: "/* This table contains bit maps for various character classes.\n"
140: "Each map is 32 bytes long and the bits run from the least\n"
141: "significant end of each byte. The classes that have their own\n"
142: "maps are: space, xdigit, digit, upper, lower, word, graph\n"
143: "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
144:
145: fprintf(f, " ");
146: for (i = 0; i < cbit_length; i++)
147: {
148: if ((i & 7) == 0 && i != 0)
149: {
150: if ((i & 31) == 0) fprintf(f, "\n");
151: fprintf(f, "\n ");
152: }
153: fprintf(f, "0x%02x", *tables++);
154: if (i != cbit_length - 1) fprintf(f, ",");
155: }
156: fprintf(f, ",\n\n");
157:
158: fprintf(f,
159: "/* This table identifies various classes of character by individual bits:\n"
160: " 0x%02x white space character\n"
161: " 0x%02x letter\n"
162: " 0x%02x decimal digit\n"
163: " 0x%02x hexadecimal digit\n"
164: " 0x%02x alphanumeric or '_'\n"
165: " 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
166: ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
167: ctype_meta);
168:
169: fprintf(f, " ");
170: for (i = 0; i < 256; i++)
171: {
172: if ((i & 7) == 0 && i != 0)
173: {
174: fprintf(f, " /* ");
175: if (isprint(i-8)) fprintf(f, " %c -", i-8);
176: else fprintf(f, "%3d-", i-8);
177: if (isprint(i-1)) fprintf(f, " %c ", i-1);
178: else fprintf(f, "%3d", i-1);
179: fprintf(f, " */\n ");
180: }
181: fprintf(f, "0x%02x", *tables++);
182: if (i != 255) fprintf(f, ",");
183: }
184:
185: fprintf(f, "};/* ");
186: if (isprint(i-8)) fprintf(f, " %c -", i-8);
187: else fprintf(f, "%3d-", i-8);
188: if (isprint(i-1)) fprintf(f, " %c ", i-1);
189: else fprintf(f, "%3d", i-1);
190: fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
191:
192: fclose(f);
193: free((void *)base_of_tables);
194: return 0;
195: }
196:
197: /* End of dftables.c */
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