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authorIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
committerIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
commitcba4af1b7643b0da036ff78fd152f74a906c4e97 (patch)
tree84f90cc1a9542b2f374932b04ea0752eabbd3741 /dftables.c
Commit upstream pcre-8.39.tar.bz2
Diffstat (limited to 'dftables.c')
-rw-r--r--dftables.c212
1 files changed, 212 insertions, 0 deletions
diff --git a/dftables.c b/dftables.c
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+/*************************************************
+* Perl-Compatible Regular Expressions *
+*************************************************/
+
+/* PCRE is a library of functions to support regular expressions whose syntax
+and semantics are as close as possible to those of the Perl 5 language.
+
+ Written by Philip Hazel
+ Copyright (c) 1997-2012 University of Cambridge
+
+-----------------------------------------------------------------------------
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of the University of Cambridge nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+-----------------------------------------------------------------------------
+*/
+
+
+/* This is a freestanding support program to generate a file containing
+character tables for PCRE. The tables are built according to the current
+locale. Now that pcre_maketables is a function visible to the outside world, we
+make use of its code from here in order to be consistent. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <locale.h>
+
+#include "pcre_internal.h"
+
+#define DFTABLES /* pcre_maketables.c notices this */
+#include "pcre_maketables.c"
+
+
+int main(int argc, char **argv)
+{
+FILE *f;
+int i = 1;
+const unsigned char *tables;
+const unsigned char *base_of_tables;
+
+/* By default, the default C locale is used rather than what the building user
+happens to have set. However, if the -L option is given, set the locale from
+the LC_xxx environment variables. */
+
+if (argc > 1 && strcmp(argv[1], "-L") == 0)
+ {
+ setlocale(LC_ALL, ""); /* Set from environment variables */
+ i++;
+ }
+
+if (argc < i + 1)
+ {
+ fprintf(stderr, "dftables: one filename argument is required\n");
+ return 1;
+ }
+
+tables = pcre_maketables();
+base_of_tables = tables;
+
+f = fopen(argv[i], "wb");
+if (f == NULL)
+ {
+ fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]);
+ return 1;
+ }
+
+/* There are several fprintf() calls here, because gcc in pedantic mode
+complains about the very long string otherwise. */
+
+fprintf(f,
+ "/*************************************************\n"
+ "* Perl-Compatible Regular Expressions *\n"
+ "*************************************************/\n\n"
+ "/* This file was automatically written by the dftables auxiliary\n"
+ "program. It contains character tables that are used when no external\n"
+ "tables are passed to PCRE by the application that calls it. The tables\n"
+ "are used only for characters whose code values are less than 256.\n\n");
+fprintf(f,
+ "The following #includes are present because without them gcc 4.x may remove\n"
+ "the array definition from the final binary if PCRE is built into a static\n"
+ "library and dead code stripping is activated. This leads to link errors.\n"
+ "Pulling in the header ensures that the array gets flagged as \"someone\n"
+ "outside this compilation unit might reference this\" and so it will always\n"
+ "be supplied to the linker. */\n\n");
+
+/* Force config.h in z/OS */
+
+#if defined NATIVE_ZOS
+fprintf(f,
+ "/* For z/OS, config.h is forced */\n"
+ "#ifndef HAVE_CONFIG_H\n"
+ "#define HAVE_CONFIG_H 1\n"
+ "#endif\n\n");
+#endif
+
+fprintf(f,
+ "#ifdef HAVE_CONFIG_H\n"
+ "#include \"config.h\"\n"
+ "#endif\n\n"
+ "#include \"pcre_internal.h\"\n\n");
+
+fprintf(f,
+ "const pcre_uint8 PRIV(default_tables)[] = {\n\n"
+ "/* This table is a lower casing table. */\n\n");
+
+fprintf(f, " ");
+for (i = 0; i < 256; i++)
+ {
+ if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
+ fprintf(f, "%3d", *tables++);
+ if (i != 255) fprintf(f, ",");
+ }
+fprintf(f, ",\n\n");
+
+fprintf(f, "/* This table is a case flipping table. */\n\n");
+
+fprintf(f, " ");
+for (i = 0; i < 256; i++)
+ {
+ if ((i & 7) == 0 && i != 0) fprintf(f, "\n ");
+ fprintf(f, "%3d", *tables++);
+ if (i != 255) fprintf(f, ",");
+ }
+fprintf(f, ",\n\n");
+
+fprintf(f,
+ "/* This table contains bit maps for various character classes.\n"
+ "Each map is 32 bytes long and the bits run from the least\n"
+ "significant end of each byte. The classes that have their own\n"
+ "maps are: space, xdigit, digit, upper, lower, word, graph\n"
+ "print, punct, and cntrl. Other classes are built from combinations. */\n\n");
+
+fprintf(f, " ");
+for (i = 0; i < cbit_length; i++)
+ {
+ if ((i & 7) == 0 && i != 0)
+ {
+ if ((i & 31) == 0) fprintf(f, "\n");
+ fprintf(f, "\n ");
+ }
+ fprintf(f, "0x%02x", *tables++);
+ if (i != cbit_length - 1) fprintf(f, ",");
+ }
+fprintf(f, ",\n\n");
+
+fprintf(f,
+ "/* This table identifies various classes of character by individual bits:\n"
+ " 0x%02x white space character\n"
+ " 0x%02x letter\n"
+ " 0x%02x decimal digit\n"
+ " 0x%02x hexadecimal digit\n"
+ " 0x%02x alphanumeric or '_'\n"
+ " 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
+ ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
+ ctype_meta);
+
+fprintf(f, " ");
+for (i = 0; i < 256; i++)
+ {
+ if ((i & 7) == 0 && i != 0)
+ {
+ fprintf(f, " /* ");
+ if (isprint(i-8)) fprintf(f, " %c -", i-8);
+ else fprintf(f, "%3d-", i-8);
+ if (isprint(i-1)) fprintf(f, " %c ", i-1);
+ else fprintf(f, "%3d", i-1);
+ fprintf(f, " */\n ");
+ }
+ fprintf(f, "0x%02x", *tables++);
+ if (i != 255) fprintf(f, ",");
+ }
+
+fprintf(f, "};/* ");
+if (isprint(i-8)) fprintf(f, " %c -", i-8);
+ else fprintf(f, "%3d-", i-8);
+if (isprint(i-1)) fprintf(f, " %c ", i-1);
+ else fprintf(f, "%3d", i-1);
+fprintf(f, " */\n\n/* End of pcre_chartables.c */\n");
+
+fclose(f);
+free((void *)base_of_tables);
+return 0;
+}
+
+/* End of dftables.c */