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authorVincent Peyruqueou2023-03-27 11:46:59 +0200
committerVincent Peyruqueou2023-03-27 11:46:59 +0200
commit0916b5f9072f7bd1b7b045ceb07758f9dc097ac2 (patch)
tree2904afe1d5d4d770695f78db5ccd722735a8e67b /pcre/pcre_maketables.c
parent5443d6828eaf5cbc7dc4613d9d75b4c192d17730 (diff)
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Add sources of PCRE and Microsoft Visual Studio solutions to compile the libHEADmaster
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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 module contains the external function pcre_maketables(), which builds
+character tables for PCRE in the current locale. The file is compiled on its
+own as part of the PCRE library. However, it is also included in the
+compilation of dftables.c, in which case the macro DFTABLES is defined. */
+
+
+#ifndef DFTABLES
+# ifdef HAVE_CONFIG_H
+# include "config.h"
+# endif
+# include "pcre_internal.h"
+#endif
+
+
+/*************************************************
+* Create PCRE character tables *
+*************************************************/
+
+/* This function builds a set of character tables for use by PCRE and returns
+a pointer to them. They are build using the ctype functions, and consequently
+their contents will depend upon the current locale setting. When compiled as
+part of the library, the store is obtained via PUBL(malloc)(), but when
+compiled inside dftables, use malloc().
+
+Arguments: none
+Returns: pointer to the contiguous block of data
+*/
+
+#if defined COMPILE_PCRE8
+const unsigned char *
+pcre_maketables(void)
+#elif defined COMPILE_PCRE16
+const unsigned char *
+pcre16_maketables(void)
+#elif defined COMPILE_PCRE32
+const unsigned char *
+pcre32_maketables(void)
+#endif
+{
+unsigned char *yield, *p;
+int i;
+
+#ifndef DFTABLES
+yield = (unsigned char*)(PUBL(malloc))(tables_length);
+#else
+yield = (unsigned char*)malloc(tables_length);
+#endif
+
+if (yield == NULL) return NULL;
+p = yield;
+
+/* First comes the lower casing table */
+
+for (i = 0; i < 256; i++) *p++ = tolower(i);
+
+/* Next the case-flipping table */
+
+for (i = 0; i < 256; i++) *p++ = islower(i)? toupper(i) : tolower(i);
+
+/* Then the character class tables. Don't try to be clever and save effort on
+exclusive ones - in some locales things may be different.
+
+Note that the table for "space" includes everything "isspace" gives, including
+VT in the default locale. This makes it work for the POSIX class [:space:].
+From release 8.34 is is also correct for Perl space, because Perl added VT at
+release 5.18.
+
+Note also that it is possible for a character to be alnum or alpha without
+being lower or upper, such as "male and female ordinals" (\xAA and \xBA) in the
+fr_FR locale (at least under Debian Linux's locales as of 12/2005). So we must
+test for alnum specially. */
+
+memset(p, 0, cbit_length);
+for (i = 0; i < 256; i++)
+ {
+ if (isdigit(i)) p[cbit_digit + i/8] |= 1 << (i&7);
+ if (isupper(i)) p[cbit_upper + i/8] |= 1 << (i&7);
+ if (islower(i)) p[cbit_lower + i/8] |= 1 << (i&7);
+ if (isalnum(i)) p[cbit_word + i/8] |= 1 << (i&7);
+ if (i == '_') p[cbit_word + i/8] |= 1 << (i&7);
+ if (isspace(i)) p[cbit_space + i/8] |= 1 << (i&7);
+ if (isxdigit(i))p[cbit_xdigit + i/8] |= 1 << (i&7);
+ if (isgraph(i)) p[cbit_graph + i/8] |= 1 << (i&7);
+ if (isprint(i)) p[cbit_print + i/8] |= 1 << (i&7);
+ if (ispunct(i)) p[cbit_punct + i/8] |= 1 << (i&7);
+ if (iscntrl(i)) p[cbit_cntrl + i/8] |= 1 << (i&7);
+ }
+p += cbit_length;
+
+/* Finally, the character type table. In this, we used to exclude VT from the
+white space chars, because Perl didn't recognize it as such for \s and for
+comments within regexes. However, Perl changed at release 5.18, so PCRE changed
+at release 8.34. */
+
+for (i = 0; i < 256; i++)
+ {
+ int x = 0;
+ if (isspace(i)) x += ctype_space;
+ if (isalpha(i)) x += ctype_letter;
+ if (isdigit(i)) x += ctype_digit;
+ if (isxdigit(i)) x += ctype_xdigit;
+ if (isalnum(i) || i == '_') x += ctype_word;
+
+ /* Note: strchr includes the terminating zero in the characters it considers.
+ In this instance, that is ok because we want binary zero to be flagged as a
+ meta-character, which in this sense is any character that terminates a run
+ of data characters. */
+
+ if (strchr("\\*+?{^.$|()[", i) != 0) x += ctype_meta;
+ *p++ = x;
+ }
+
+return yield;
+}
+
+/* End of pcre_maketables.c */