-/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
- *
+/* Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
- *
+ *
* This program 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. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice.
+ * If you do not wish that, delete this exception notice.
*/
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
\f
libraries which do not agree with the Spencer implementation may
produce varying behavior. Sigh. */
-#include <stdio.h>
#include <sys/types.h>
-#include "_scm.h"
+#include "libguile/_scm.h"
/* Supposedly, this file is never compiled unless we know we have
POSIX regular expressions. But we still put this in an #ifdef so
#endif
#endif
-#include "smob.h"
-#include "symbols.h"
-#include "vectors.h"
-#include "strports.h"
-#include "ports.h"
-#include "feature.h"
+#include "libguile/smob.h"
+#include "libguile/symbols.h"
+#include "libguile/vectors.h"
+#include "libguile/strports.h"
+#include "libguile/ports.h"
+#include "libguile/feature.h"
+#include "libguile/strings.h"
-#include "scm_validate.h"
-#include "regex-posix.h"
+#include "libguile/validate.h"
+#include "libguile/regex-posix.h"
/* This is defined by some regex libraries and omitted by others. */
#ifndef REG_BASIC
#define REG_BASIC 0
#endif
-long scm_tc16_regex;
+scm_t_bits scm_tc16_regex;
-static scm_sizet
-free_regex (SCM obj)
+static size_t
+regex_free (SCM obj)
{
regfree (SCM_RGX (obj));
free (SCM_RGX (obj));
errmsg = scm_make_string (SCM_MAKINUM (80), SCM_UNDEFINED);
SCM_DEFER_INTS;
- l = regerror (regerrno, rx, SCM_CHARS (errmsg), 80);
+ l = regerror (regerrno, rx, SCM_STRING_CHARS (errmsg), 80);
if (l > 80)
{
errmsg = scm_make_string (SCM_MAKINUM (l), SCM_UNDEFINED);
- regerror (regerrno, rx, SCM_CHARS (errmsg), l);
+ regerror (regerrno, rx, SCM_STRING_CHARS (errmsg), l);
}
SCM_ALLOW_INTS;
- return SCM_CHARS (errmsg);
+ return SCM_STRING_CHARS (errmsg);
}
-GUILE_PROC (scm_regexp_p, "regexp?", 1, 0, 0,
- (SCM x),
-"")
+SCM_DEFINE (scm_regexp_p, "regexp?", 1, 0, 0,
+ (SCM obj),
+ "Return @code{#t} if @var{obj} is a compiled regular expression,\n"
+ "or @code{#f} otherwise.")
#define FUNC_NAME s_scm_regexp_p
{
- return SCM_BOOL(SCM_NIMP (x) && SCM_RGXP (x));
+ return SCM_BOOL(SCM_RGXP (obj));
}
#undef FUNC_NAME
-GUILE_PROC (scm_make_regexp, "make-regexp", 1, 0, 1,
+SCM_DEFINE (scm_make_regexp, "make-regexp", 1, 0, 1,
(SCM pat, SCM flags),
-"")
+ "Compile the regular expression described by @var{pat}, and\n"
+ "return the compiled regexp structure. If @var{pat} does not\n"
+ "describe a legal regular expression, @code{make-regexp} throws\n"
+ "a @code{regular-expression-syntax} error.\n"
+ "\n"
+ "The @var{flags} arguments change the behavior of the compiled\n"
+ "regular expression. The following flags may be supplied:\n"
+ "\n"
+ "@table @code\n"
+ "@item regexp/icase\n"
+ "Consider uppercase and lowercase letters to be the same when\n"
+ "matching.\n"
+ "@item regexp/newline\n"
+ "If a newline appears in the target string, then permit the\n"
+ "@samp{^} and @samp{$} operators to match immediately after or\n"
+ "immediately before the newline, respectively. Also, the\n"
+ "@samp{.} and @samp{[^...]} operators will never match a newline\n"
+ "character. The intent of this flag is to treat the target\n"
+ "string as a buffer containing many lines of text, and the\n"
+ "regular expression as a pattern that may match a single one of\n"
+ "those lines.\n"
+ "@item regexp/basic\n"
+ "Compile a basic (``obsolete'') regexp instead of the extended\n"
+ "(``modern'') regexps that are the default. Basic regexps do\n"
+ "not consider @samp{|}, @samp{+} or @samp{?} to be special\n"
+ "characters, and require the @samp{@{...@}} and @samp{(...)}\n"
+ "metacharacters to be backslash-escaped (@pxref{Backslash\n"
+ "Escapes}). There are several other differences between basic\n"
+ "and extended regular expressions, but these are the most\n"
+ "significant.\n"
+ "@item regexp/extended\n"
+ "Compile an extended regular expression rather than a basic\n"
+ "regexp. This is the default behavior; this flag will not\n"
+ "usually be needed. If a call to @code{make-regexp} includes\n"
+ "both @code{regexp/basic} and @code{regexp/extended} flags, the\n"
+ "one which comes last will override the earlier one.\n"
+ "@end table")
#define FUNC_NAME s_scm_make_regexp
{
SCM flag;
regex_t *rx;
int status, cflags;
- SCM_VALIDATE_ROSTRING(1,pat);
- SCM_COERCE_SUBSTR (pat);
+ SCM_VALIDATE_STRING (1, pat);
+ SCM_VALIDATE_REST_ARGUMENT (flags);
/* Examine list of regexp flags. If REG_BASIC is supplied, then
turn off REG_EXTENDED flag (on by default). */
cflags = REG_EXTENDED;
flag = flags;
- while (SCM_NNULLP (flag))
+ while (!SCM_NULLP (flag))
{
if (SCM_INUM (SCM_CAR (flag)) == REG_BASIC)
cflags &= ~REG_EXTENDED;
cflags |= SCM_INUM (SCM_CAR (flag));
flag = SCM_CDR (flag);
}
-
- rx = SCM_MUST_MALLOC_TYPE(regex_t);
- status = regcomp (rx, SCM_ROCHARS (pat),
+
+ rx = SCM_MUST_MALLOC_TYPE (regex_t);
+ status = regcomp (rx, SCM_STRING_CHARS (pat),
/* Make sure they're not passing REG_NOSUB;
regexp-exec assumes we're getting match data. */
cflags & ~REG_NOSUB);
}
#undef FUNC_NAME
-GUILE_PROC (scm_regexp_exec, "regexp-exec", 2, 2, 0,
+SCM_DEFINE (scm_regexp_exec, "regexp-exec", 2, 2, 0,
(SCM rx, SCM str, SCM start, SCM flags),
- "")
+ "Match the compiled regular expression @var{rx} against\n"
+ "@code{str}. If the optional integer @var{start} argument is\n"
+ "provided, begin matching from that position in the string.\n"
+ "Return a match structure describing the results of the match,\n"
+ "or @code{#f} if no match could be found.\n"
+ "\n"
+ "The @var{flags} arguments change the matching behavior.\n"
+ "The following flags may be supplied:\n"
+ "\n"
+ "@table @code\n"
+ "@item regexp/notbol\n"
+ "Operator @samp{^} always fails (unless @code{regexp/newline}\n"
+ "is used). Use this when the beginning of the string should\n"
+ "not be considered the beginning of a line.\n"
+ "@item regexp/noteol\n"
+ "Operator @samp{$} always fails (unless @code{regexp/newline}\n"
+ "is used). Use this when the end of the string should not be\n"
+ "considered the end of a line.\n"
+ "@end table")
#define FUNC_NAME s_scm_regexp_exec
{
int status, nmatches, offset;
regmatch_t *matches;
SCM mvec = SCM_BOOL_F;
- SCM_VALIDATE_RGXP(1,rx);
- SCM_VALIDATE_ROSTRING(2,str);
- SCM_VALIDATE_INT_DEF_COPY(3,start,0,offset);
- SCM_ASSERT_RANGE (3,start,offset >= 0 && (unsigned) offset <= SCM_LENGTH (str));
+ SCM_VALIDATE_RGXP (1,rx);
+ SCM_VALIDATE_STRING (2, str);
+ SCM_VALIDATE_INUM_DEF_COPY (3,start,0,offset);
+ SCM_ASSERT_RANGE (3,start, offset >= 0 && offset <= SCM_STRING_LENGTH (str));
if (SCM_UNBNDP (flags))
flags = SCM_INUM0;
- SCM_VALIDATE_INT(4,flags);
- SCM_COERCE_SUBSTR (str);
+ SCM_VALIDATE_INUM (4,flags);
/* re_nsub doesn't account for the `subexpression' representing the
whole regexp, so add 1 to nmatches. */
nmatches = SCM_RGX(rx)->re_nsub + 1;
SCM_DEFER_INTS;
matches = SCM_MUST_MALLOC_TYPE_NUM (regmatch_t,nmatches);
- status = regexec (SCM_RGX (rx), SCM_ROCHARS (str) + offset,
+ status = regexec (SCM_RGX (rx), SCM_STRING_CHARS (str) + offset,
nmatches, matches,
SCM_INUM (flags));
if (!status)
int i;
/* The match vector must include a cell for the string that was matched,
so add 1. */
- mvec = scm_make_vector (SCM_MAKINUM (nmatches + 1), SCM_UNSPECIFIED);
+ mvec = scm_c_make_vector (nmatches + 1, SCM_UNSPECIFIED);
SCM_VELTS(mvec)[0] = str;
for (i = 0; i < nmatches; ++i)
if (matches[i].rm_so == -1)
SCM_VELTS(mvec)[i+1] = scm_cons (SCM_MAKINUM (-1), SCM_MAKINUM (-1));
else
SCM_VELTS(mvec)[i+1]
- = scm_cons(SCM_MAKINUM(matches[i].rm_so + offset),
- SCM_MAKINUM(matches[i].rm_eo + offset));
+ = scm_cons (scm_long2num (matches[i].rm_so + offset),
+ scm_long2num (matches[i].rm_eo + offset));
}
scm_must_free ((char *) matches);
SCM_ALLOW_INTS;
void
scm_init_regex_posix ()
{
- scm_tc16_regex = scm_make_smob_type_mfpe ("regexp", sizeof (regex_t),
- NULL, free_regex, NULL, NULL);
+ scm_tc16_regex = scm_make_smob_type ("regexp", sizeof (regex_t));
+ scm_set_smob_free (scm_tc16_regex, regex_free);
/* Compilation flags. */
- scm_sysintern ("regexp/basic", scm_long2num (REG_BASIC));
- scm_sysintern ("regexp/extended", scm_long2num (REG_EXTENDED));
- scm_sysintern ("regexp/icase", scm_long2num (REG_ICASE));
- scm_sysintern ("regexp/newline", scm_long2num (REG_NEWLINE));
+ scm_c_define ("regexp/basic", scm_long2num (REG_BASIC));
+ scm_c_define ("regexp/extended", scm_long2num (REG_EXTENDED));
+ scm_c_define ("regexp/icase", scm_long2num (REG_ICASE));
+ scm_c_define ("regexp/newline", scm_long2num (REG_NEWLINE));
/* Execution flags. */
- scm_sysintern ("regexp/notbol", scm_long2num (REG_NOTBOL));
- scm_sysintern ("regexp/noteol", scm_long2num (REG_NOTEOL));
+ scm_c_define ("regexp/notbol", scm_long2num (REG_NOTBOL));
+ scm_c_define ("regexp/noteol", scm_long2num (REG_NOTEOL));
-#include "regex-posix.x"
+#ifndef SCM_MAGIC_SNARFER
+#include "libguile/regex-posix.x"
+#endif
scm_add_feature ("regex");
}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff