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| author | danglassey <danglassey> | 2002-08-14 09:57:17 +0000 |
|---|---|---|
| committer | danglassey <danglassey> | 2002-08-14 09:57:17 +0000 |
| commit | c9458897ebbb739d8db83c80e06512d8a612f743 (patch) | |
| tree | f8c5381045887e34388cc6b26cfccc254bf766dc /doc/api-documentation/html/regex_8h-source.html | |
| download | sword-sf-cvs-c9458897ebbb739d8db83c80e06512d8a612f743.tar.gz | |
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diff --git a/doc/api-documentation/html/regex_8h-source.html b/doc/api-documentation/html/regex_8h-source.html new file mode 100644 index 0000000..18a7b73 --- /dev/null +++ b/doc/api-documentation/html/regex_8h-source.html @@ -0,0 +1,559 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> +<title>regex.h Source File</title> +<link href="doxygen.css" rel="stylesheet" type="text/css"> +</head><body> +<!-- Generated by Doxygen 1.2.15 --> +<center> +<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> </center> +<hr><h1>regex.h</h1><div class="fragment"><pre>00001 <font class="comment">/* Definitions for data structures and routines for the regular</font> +00002 <font class="comment"> expression library, version 0.12.</font> +00003 <font class="comment"> Copyright (C) 1985,89,90,91,92,93,95,96,97 Free Software Foundation, Inc.</font> +00004 <font class="comment"></font> +00005 <font class="comment"> the C library, however. The master source lives in /gd/gnu/lib.</font> +00006 <font class="comment"></font> +00007 <font class="comment">NOTE: The canonical source of this file is maintained with the </font> +00008 <font class="comment">GNU C Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.</font> +00009 <font class="comment"></font> +00010 <font class="comment">This program is free software; you can redistribute it and/or modify it</font> +00011 <font class="comment">under the terms of the GNU General Public License as published by the</font> +00012 <font class="comment">Free Software Foundation; either version 2, or (at your option) any</font> +00013 <font class="comment">later version.</font> +00014 <font class="comment"></font> +00015 <font class="comment">This program is distributed in the hope that it will be useful,</font> +00016 <font class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00017 <font class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font> +00018 <font class="comment">GNU General Public License for more details.</font> +00019 <font class="comment"></font> +00020 <font class="comment">You should have received a copy of the GNU General Public License</font> +00021 <font class="comment">along with this program; if not, write to the Free Software Foundation, </font> +00022 <font class="comment">Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */</font> +00023 +00024 <font class="preprocessor">#ifndef _REGEX_H</font> +00025 <font class="preprocessor"></font><font class="preprocessor">#define _REGEX_H 1</font> +00026 <font class="preprocessor"></font> +00027 <font class="comment">/* Allow the use in C++ code. */</font> +00028 <font class="preprocessor">#ifdef __cplusplus</font> +00029 <font class="preprocessor"></font><font class="keyword">extern</font> <font class="stringliteral">"C"</font> +00030 { +00031 <font class="preprocessor">#endif</font> +00032 <font class="preprocessor"></font> +00033 <font class="comment">/* POSIX says that <sys/types.h> must be included (by the caller) before</font> +00034 <font class="comment"> <regex.h>. */</font> +00035 +00036 <font class="preprocessor">#if !defined (_POSIX_C_SOURCE) && !defined (_POSIX_SOURCE) && defined (VMS)</font> +00037 <font class="preprocessor"></font><font class="comment">/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it</font> +00038 <font class="comment"> should be there. */</font> +00039 <font class="preprocessor">#include <stddef.h></font> +00040 <font class="preprocessor">#endif</font> +00041 <font class="preprocessor"></font> +00042 <font class="comment">/* The following two types have to be signed and unsigned integer type</font> +00043 <font class="comment"> wide enough to hold a value of a pointer. For most ANSI compilers</font> +00044 <font class="comment"> ptrdiff_t and size_t should be likely OK. Still size of these two</font> +00045 <font class="comment"> types is 2 for Microsoft C. Ugh... */</font> +00046 <font class="keyword">typedef</font> <font class="keywordtype">long</font> <font class="keywordtype">int</font> s_reg_t; +00047 <font class="keyword">typedef</font> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">int</font> active_reg_t; +00048 +00049 <font class="comment">/* The following bits are used to determine the regexp syntax we</font> +00050 <font class="comment"> recognize. The set/not-set meanings are chosen so that Emacs syntax</font> +00051 <font class="comment"> remains the value 0. The bits are given in alphabetical order, and</font> +00052 <font class="comment"> the definitions shifted by one from the previous bit; thus, when we</font> +00053 <font class="comment"> add or remove a bit, only one other definition need change. */</font> +00054 <font class="keyword">typedef</font> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">int</font> reg_syntax_t; +00055 +00056 <font class="comment">/* If this bit is not set, then \ inside a bracket expression is literal.</font> +00057 <font class="comment"> If set, then such a \ quotes the following character. */</font> +00058 <font class="preprocessor">#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)</font> +00059 <font class="preprocessor"></font> +00060 <font class="comment">/* If this bit is not set, then + and ? are operators, and \+ and \? are</font> +00061 <font class="comment"> literals.</font> +00062 <font class="comment"> If set, then \+ and \? are operators and + and ? are literals. */</font> +00063 <font class="preprocessor">#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)</font> +00064 <font class="preprocessor"></font> +00065 <font class="comment">/* If this bit is set, then character classes are supported. They are:</font> +00066 <font class="comment"> [:alpha:], [:upper:], [:lower:], [:digit:], [:alnum:], [:xdigit:],</font> +00067 <font class="comment"> [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].</font> +00068 <font class="comment"> If not set, then character classes are not supported. */</font> +00069 <font class="preprocessor">#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)</font> +00070 <font class="preprocessor"></font> +00071 <font class="comment">/* If this bit is set, then ^ and $ are always anchors (outside bracket</font> +00072 <font class="comment"> expressions, of course).</font> +00073 <font class="comment"> If this bit is not set, then it depends:</font> +00074 <font class="comment"> ^ is an anchor if it is at the beginning of a regular</font> +00075 <font class="comment"> expression or after an open-group or an alternation operator;</font> +00076 <font class="comment"> $ is an anchor if it is at the end of a regular expression, or</font> +00077 <font class="comment"> before a close-group or an alternation operator.</font> +00078 <font class="comment"></font> +00079 <font class="comment"> This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because</font> +00080 <font class="comment"> POSIX draft 11.2 says that * etc. in leading positions is undefined.</font> +00081 <font class="comment"> We already implemented a previous draft which made those constructs</font> +00082 <font class="comment"> invalid, though, so we haven't changed the code back. */</font> +00083 <font class="preprocessor">#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)</font> +00084 <font class="preprocessor"></font> +00085 <font class="comment">/* If this bit is set, then special characters are always special</font> +00086 <font class="comment"> regardless of where they are in the pattern.</font> +00087 <font class="comment"> If this bit is not set, then special characters are special only in</font> +00088 <font class="comment"> some contexts; otherwise they are ordinary. Specifically,</font> +00089 <font class="comment"> * + ? and intervals are only special when not after the beginning,</font> +00090 <font class="comment"> open-group, or alternation operator. */</font> +00091 <font class="preprocessor">#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)</font> +00092 <font class="preprocessor"></font> +00093 <font class="comment">/* If this bit is set, then *, +, ?, and { cannot be first in an re or</font> +00094 <font class="comment"> immediately after an alternation or begin-group operator. */</font> +00095 <font class="preprocessor">#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)</font> +00096 <font class="preprocessor"></font> +00097 <font class="comment">/* If this bit is set, then . matches newline.</font> +00098 <font class="comment"> If not set, then it doesn't. */</font> +00099 <font class="preprocessor">#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)</font> +00100 <font class="preprocessor"></font> +00101 <font class="comment">/* If this bit is set, then . doesn't match NUL.</font> +00102 <font class="comment"> If not set, then it does. */</font> +00103 <font class="preprocessor">#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)</font> +00104 <font class="preprocessor"></font> +00105 <font class="comment">/* If this bit is set, nonmatching lists [^...] do not match newline.</font> +00106 <font class="comment"> If not set, they do. */</font> +00107 <font class="preprocessor">#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)</font> +00108 <font class="preprocessor"></font> +00109 <font class="comment">/* If this bit is set, either \{...\} or {...} defines an</font> +00110 <font class="comment"> interval, depending on RE_NO_BK_BRACES.</font> +00111 <font class="comment"> If not set, \{, \}, {, and } are literals. */</font> +00112 <font class="preprocessor">#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)</font> +00113 <font class="preprocessor"></font> +00114 <font class="comment">/* If this bit is set, +, ? and | aren't recognized as operators.</font> +00115 <font class="comment"> If not set, they are. */</font> +00116 <font class="preprocessor">#define RE_LIMITED_OPS (RE_INTERVALS << 1)</font> +00117 <font class="preprocessor"></font> +00118 <font class="comment">/* If this bit is set, newline is an alternation operator.</font> +00119 <font class="comment"> If not set, newline is literal. */</font> +00120 <font class="preprocessor">#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)</font> +00121 <font class="preprocessor"></font> +00122 <font class="comment">/* If this bit is set, then `{...}' defines an interval, and \{ and \}</font> +00123 <font class="comment"> are literals.</font> +00124 <font class="comment"> If not set, then `\{...\}' defines an interval. */</font> +00125 <font class="preprocessor">#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)</font> +00126 <font class="preprocessor"></font> +00127 <font class="comment">/* If this bit is set, (...) defines a group, and \( and \) are literals.</font> +00128 <font class="comment"> If not set, \(...\) defines a group, and ( and ) are literals. */</font> +00129 <font class="preprocessor">#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)</font> +00130 <font class="preprocessor"></font> +00131 <font class="comment">/* If this bit is set, then <digit> matches <digit>.</font> +00132 <font class="comment"> If not set, then <digit> is a back-reference. */</font> +00133 <font class="preprocessor">#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)</font> +00134 <font class="preprocessor"></font> +00135 <font class="comment">/* If this bit is set, then | is an alternation operator, and \| is literal.</font> +00136 <font class="comment"> If not set, then \| is an alternation operator, and | is literal. */</font> +00137 <font class="preprocessor">#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)</font> +00138 <font class="preprocessor"></font> +00139 <font class="comment">/* If this bit is set, then an ending range point collating higher</font> +00140 <font class="comment"> than the starting range point, as in [z-a], is invalid.</font> +00141 <font class="comment"> If not set, then when ending range point collates higher than the</font> +00142 <font class="comment"> starting range point, the range is ignored. */</font> +00143 <font class="preprocessor">#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)</font> +00144 <font class="preprocessor"></font> +00145 <font class="comment">/* If this bit is set, then an unmatched ) is ordinary.</font> +00146 <font class="comment"> If not set, then an unmatched ) is invalid. */</font> +00147 <font class="preprocessor">#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)</font> +00148 <font class="preprocessor"></font> +00149 <font class="comment">/* If this bit is set, succeed as soon as we match the whole pattern,</font> +00150 <font class="comment"> without further backtracking. */</font> +00151 <font class="preprocessor">#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)</font> +00152 <font class="preprocessor"></font> +00153 <font class="comment">/* If this bit is set, do not process the GNU regex operators.</font> +00154 <font class="comment"> If not set, then the GNU regex operators are recognized. */</font> +00155 <font class="preprocessor">#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)</font> +00156 <font class="preprocessor"></font> +00157 <font class="comment">/* If this bit is set, turn on internal regex debugging.</font> +00158 <font class="comment"> If not set, and debugging was on, turn it off.</font> +00159 <font class="comment"> This only works if regex.c is compiled -DDEBUG.</font> +00160 <font class="comment"> We define this bit always, so that all that's needed to turn on</font> +00161 <font class="comment"> debugging is to recompile regex.c; the calling code can always have</font> +00162 <font class="comment"> this bit set, and it won't affect anything in the normal case. */</font> +00163 <font class="preprocessor">#define RE_DEBUG (RE_NO_GNU_OPS << 1)</font> +00164 <font class="preprocessor"></font> +00165 <font class="comment">/* This global variable defines the particular regexp syntax to use (for</font> +00166 <font class="comment"> some interfaces). When a regexp is compiled, the syntax used is</font> +00167 <font class="comment"> stored in the pattern buffer, so changing this does not affect</font> +00168 <font class="comment"> already-compiled regexps. */</font> +00169 <font class="keyword">extern</font> reg_syntax_t re_syntax_options; +00170 +00171 <font class="comment">/* Define combinations of the above bits for the standard possibilities.</font> +00172 <font class="comment"> (The [[[ comments delimit what gets put into the Texinfo file, so</font> +00173 <font class="comment"> don't delete them!) */</font> +00174 <font class="comment">/* [[[begin syntaxes]]] */</font> +00175 <font class="preprocessor">#define RE_SYNTAX_EMACS 0</font> +00176 <font class="preprocessor"></font> +00177 <font class="preprocessor">#define RE_SYNTAX_AWK \</font> +00178 <font class="preprocessor"> (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \</font> +00179 <font class="preprocessor"> | RE_NO_BK_PARENS | RE_NO_BK_REFS \</font> +00180 <font class="preprocessor"> | RE_NO_BK_VBAR | RE_NO_EMPTY_RANGES \</font> +00181 <font class="preprocessor"> | RE_DOT_NEWLINE | RE_CONTEXT_INDEP_ANCHORS \</font> +00182 <font class="preprocessor"> | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)</font> +00183 <font class="preprocessor"></font> +00184 <font class="preprocessor">#define RE_SYNTAX_GNU_AWK \</font> +00185 <font class="preprocessor"> ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \</font> +00186 <font class="preprocessor"> & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS))</font> +00187 <font class="preprocessor"></font> +00188 <font class="preprocessor">#define RE_SYNTAX_POSIX_AWK \</font> +00189 <font class="preprocessor"> (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \</font> +00190 <font class="preprocessor"> | RE_INTERVALS | RE_NO_GNU_OPS)</font> +00191 <font class="preprocessor"></font> +00192 <font class="preprocessor">#define RE_SYNTAX_GREP \</font> +00193 <font class="preprocessor"> (RE_BK_PLUS_QM | RE_CHAR_CLASSES \</font> +00194 <font class="preprocessor"> | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \</font> +00195 <font class="preprocessor"> | RE_NEWLINE_ALT)</font> +00196 <font class="preprocessor"></font> +00197 <font class="preprocessor">#define RE_SYNTAX_EGREP \</font> +00198 <font class="preprocessor"> (RE_CHAR_CLASSES | RE_CONTEXT_INDEP_ANCHORS \</font> +00199 <font class="preprocessor"> | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE \</font> +00200 <font class="preprocessor"> | RE_NEWLINE_ALT | RE_NO_BK_PARENS \</font> +00201 <font class="preprocessor"> | RE_NO_BK_VBAR)</font> +00202 <font class="preprocessor"></font> +00203 <font class="preprocessor">#define RE_SYNTAX_POSIX_EGREP \</font> +00204 <font class="preprocessor"> (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES)</font> +00205 <font class="preprocessor"></font> +00206 <font class="comment">/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */</font> +00207 <font class="preprocessor">#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC</font> +00208 <font class="preprocessor"></font> +00209 <font class="preprocessor">#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC</font> +00210 <font class="preprocessor"></font> +00211 <font class="comment">/* Syntax bits common to both basic and extended POSIX regex syntax. */</font> +00212 <font class="preprocessor">#define _RE_SYNTAX_POSIX_COMMON \</font> +00213 <font class="preprocessor"> (RE_CHAR_CLASSES | RE_DOT_NEWLINE | RE_DOT_NOT_NULL \</font> +00214 <font class="preprocessor"> | RE_INTERVALS | RE_NO_EMPTY_RANGES)</font> +00215 <font class="preprocessor"></font> +00216 <font class="preprocessor">#define RE_SYNTAX_POSIX_BASIC \</font> +00217 <font class="preprocessor"> (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)</font> +00218 <font class="preprocessor"></font> +00219 <font class="comment">/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes</font> +00220 <font class="comment"> RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this</font> +00221 <font class="comment"> isn't minimal, since other operators, such as \`, aren't disabled. */</font> +00222 <font class="preprocessor">#define RE_SYNTAX_POSIX_MINIMAL_BASIC \</font> +00223 <font class="preprocessor"> (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)</font> +00224 <font class="preprocessor"></font> +00225 <font class="preprocessor">#define RE_SYNTAX_POSIX_EXTENDED \</font> +00226 <font class="preprocessor"> (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \</font> +00227 <font class="preprocessor"> | RE_CONTEXT_INDEP_OPS | RE_NO_BK_BRACES \</font> +00228 <font class="preprocessor"> | RE_NO_BK_PARENS | RE_NO_BK_VBAR \</font> +00229 <font class="preprocessor"> | RE_UNMATCHED_RIGHT_PAREN_ORD)</font> +00230 <font class="preprocessor"></font> +00231 <font class="comment">/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INVALID_OPS</font> +00232 <font class="comment"> replaces RE_CONTEXT_INDEP_OPS and RE_NO_BK_REFS is added. */</font> +00233 <font class="preprocessor">#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \</font> +00234 <font class="preprocessor"> (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \</font> +00235 <font class="preprocessor"> | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES \</font> +00236 <font class="preprocessor"> | RE_NO_BK_PARENS | RE_NO_BK_REFS \</font> +00237 <font class="preprocessor"> | RE_NO_BK_VBAR | RE_UNMATCHED_RIGHT_PAREN_ORD)</font> +00238 <font class="preprocessor"></font><font class="comment">/* [[[end syntaxes]]] */</font> +00239 +00240 <font class="comment">/* Maximum number of duplicates an interval can allow. Some systems</font> +00241 <font class="comment"> (erroneously) define this in other header files, but we want our</font> +00242 <font class="comment"> value, so remove any previous define. */</font> +00243 <font class="preprocessor">#ifdef RE_DUP_MAX</font> +00244 <font class="preprocessor"></font><font class="preprocessor">#undef RE_DUP_MAX</font> +00245 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00246 <font class="preprocessor"></font><font class="comment">/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows. */</font> +00247 <font class="preprocessor">#define RE_DUP_MAX (0x7fff)</font> +00248 <font class="preprocessor"></font> +00249 +00250 <font class="comment">/* POSIX `cflags' bits (i.e., information for `regcomp'). */</font> +00251 +00252 <font class="comment">/* If this bit is set, then use extended regular expression syntax.</font> +00253 <font class="comment"> If not set, then use basic regular expression syntax. */</font> +00254 <font class="preprocessor">#define REG_EXTENDED 1</font> +00255 <font class="preprocessor"></font> +00256 <font class="comment">/* If this bit is set, then ignore case when matching.</font> +00257 <font class="comment"> If not set, then case is significant. */</font> +00258 <font class="preprocessor">#define REG_ICASE (REG_EXTENDED << 1)</font> +00259 <font class="preprocessor"></font> +00260 <font class="comment">/* If this bit is set, then anchors do not match at newline</font> +00261 <font class="comment"> characters in the string.</font> +00262 <font class="comment"> If not set, then anchors do match at newlines. */</font> +00263 <font class="preprocessor">#define REG_NEWLINE (REG_ICASE << 1)</font> +00264 <font class="preprocessor"></font> +00265 <font class="comment">/* If this bit is set, then report only success or fail in regexec.</font> +00266 <font class="comment"> If not set, then returns differ between not matching and errors. */</font> +00267 <font class="preprocessor">#define REG_NOSUB (REG_NEWLINE << 1)</font> +00268 <font class="preprocessor"></font> +00269 +00270 <font class="comment">/* POSIX `eflags' bits (i.e., information for regexec). */</font> +00271 +00272 <font class="comment">/* If this bit is set, then the beginning-of-line operator doesn't match</font> +00273 <font class="comment"> the beginning of the string (presumably because it's not the</font> +00274 <font class="comment"> beginning of a line).</font> +00275 <font class="comment"> If not set, then the beginning-of-line operator does match the</font> +00276 <font class="comment"> beginning of the string. */</font> +00277 <font class="preprocessor">#define REG_NOTBOL 1</font> +00278 <font class="preprocessor"></font> +00279 <font class="comment">/* Like REG_NOTBOL, except for the end-of-line. */</font> +00280 <font class="preprocessor">#define REG_NOTEOL (1 << 1)</font> +00281 <font class="preprocessor"></font> +00282 +00283 <font class="comment">/* If any error codes are removed, changed, or added, update the</font> +00284 <font class="comment"> `re_error_msg' table in regex.c. */</font> +00285 <font class="keyword">typedef</font> <font class="keyword">enum</font> +00286 { +00287 REG_NOERROR = 0, <font class="comment">/* Success. */</font> +00288 REG_NOMATCH, <font class="comment">/* Didn't find a match (for regexec). */</font> +00289 +00290 <font class="comment">/* POSIX regcomp return error codes. (In the order listed in the</font> +00291 <font class="comment"> standard.) */</font> +00292 REG_BADPAT, <font class="comment">/* Invalid pattern. */</font> +00293 REG_ECOLLATE, <font class="comment">/* Not implemented. */</font> +00294 REG_ECTYPE, <font class="comment">/* Invalid character class name. */</font> +00295 REG_EESCAPE, <font class="comment">/* Trailing backslash. */</font> +00296 REG_ESUBREG, <font class="comment">/* Invalid back reference. */</font> +00297 REG_EBRACK, <font class="comment">/* Unmatched left bracket. */</font> +00298 REG_EPAREN, <font class="comment">/* Parenthesis imbalance. */</font> +00299 REG_EBRACE, <font class="comment">/* Unmatched \{. */</font> +00300 REG_BADBR, <font class="comment">/* Invalid contents of \{\}. */</font> +00301 REG_ERANGE, <font class="comment">/* Invalid range end. */</font> +00302 REG_ESPACE, <font class="comment">/* Ran out of memory. */</font> +00303 REG_BADRPT, <font class="comment">/* No preceding re for repetition op. */</font> +00304 +00305 <font class="comment">/* Error codes we've added. */</font> +00306 REG_EEND, <font class="comment">/* Premature end. */</font> +00307 REG_ESIZE, <font class="comment">/* Compiled pattern bigger than 2^16 bytes. */</font> +00308 REG_ERPAREN <font class="comment">/* Unmatched ) or \); not returned from regcomp. */</font> +00309 } +00310 reg_errcode_t; +00311 +00312 <font class="comment">/* This data structure represents a compiled pattern. Before calling</font> +00313 <font class="comment"> the pattern compiler, the fields `buffer', `allocated', `fastmap',</font> +00314 <font class="comment"> `translate', and `no_sub' can be set. After the pattern has been</font> +00315 <font class="comment"> compiled, the `re_nsub' field is available. All other fields are</font> +00316 <font class="comment"> private to the regex routines. */</font> +00317 +00318 <font class="preprocessor">#ifndef RE_TRANSLATE_TYPE</font> +00319 <font class="preprocessor"></font><font class="preprocessor">#define RE_TRANSLATE_TYPE char *</font> +00320 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00321 <font class="preprocessor"></font> +00322 <font class="keyword">struct </font>re_pattern_buffer +00323 { +00324 <font class="comment">/* [[[begin pattern_buffer]]] */</font> +00325 <font class="comment">/* Space that holds the compiled pattern. It is declared as</font> +00326 <font class="comment"> `unsigned char *' because its elements are</font> +00327 <font class="comment"> sometimes used as array indexes. */</font> +00328 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *buffer; +00329 +00330 <font class="comment">/* Number of bytes to which `buffer' points. */</font> +00331 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">int</font> allocated; +00332 +00333 <font class="comment">/* Number of bytes actually used in `buffer'. */</font> +00334 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">int</font> used; +00335 +00336 <font class="comment">/* Syntax setting with which the pattern was compiled. */</font> +00337 reg_syntax_t syntax; +00338 +00339 <font class="comment">/* Pointer to a fastmap, if any, otherwise zero. re_search uses</font> +00340 <font class="comment"> the fastmap, if there is one, to skip over impossible</font> +00341 <font class="comment"> starting points for matches. */</font> +00342 <font class="keywordtype">char</font> *fastmap; +00343 +00344 <font class="comment">/* Either a translate table to apply to all characters before</font> +00345 <font class="comment"> comparing them, or zero for no translation. The translation</font> +00346 <font class="comment"> is applied to a pattern when it is compiled and to a string</font> +00347 <font class="comment"> when it is matched. */</font> +00348 RE_TRANSLATE_TYPE translate; +00349 +00350 <font class="comment">/* Number of subexpressions found by the compiler. */</font> +00351 size_t re_nsub; +00352 +00353 <font class="comment">/* Zero if this pattern cannot match the empty string, one else.</font> +00354 <font class="comment"> Well, in truth it's used only in `re_search_2', to see</font> +00355 <font class="comment"> whether or not we should use the fastmap, so we don't set</font> +00356 <font class="comment"> this absolutely perfectly; see `re_compile_fastmap' (the</font> +00357 <font class="comment"> `duplicate' case). */</font> +00358 <font class="keywordtype">unsigned</font> can_be_null:1; +00359 +00360 <font class="comment">/* If REGS_UNALLOCATED, allocate space in the `regs' structure</font> +00361 <font class="comment"> for `max (RE_NREGS, re_nsub + 1)' groups.</font> +00362 <font class="comment"> If REGS_REALLOCATE, reallocate space if necessary.</font> +00363 <font class="comment"> If REGS_FIXED, use what's there. */</font> +00364 <font class="preprocessor">#define REGS_UNALLOCATED 0</font> +00365 <font class="preprocessor"></font><font class="preprocessor">#define REGS_REALLOCATE 1</font> +00366 <font class="preprocessor"></font><font class="preprocessor">#define REGS_FIXED 2</font> +00367 <font class="preprocessor"></font> <font class="keywordtype">unsigned</font> regs_allocated:2; +00368 +00369 <font class="comment">/* Set to zero when `regex_compile' compiles a pattern; set to one</font> +00370 <font class="comment"> by `re_compile_fastmap' if it updates the fastmap. */</font> +00371 <font class="keywordtype">unsigned</font> fastmap_accurate:1; +00372 +00373 <font class="comment">/* If set, `re_match_2' does not return information about</font> +00374 <font class="comment"> subexpressions. */</font> +00375 <font class="keywordtype">unsigned</font> no_sub:1; +00376 +00377 <font class="comment">/* If set, a beginning-of-line anchor doesn't match at the</font> +00378 <font class="comment"> beginning of the string. */</font> +00379 <font class="keywordtype">unsigned</font> not_bol:1; +00380 +00381 <font class="comment">/* Similarly for an end-of-line anchor. */</font> +00382 <font class="keywordtype">unsigned</font> not_eol:1; +00383 +00384 <font class="comment">/* If true, an anchor at a newline matches. */</font> +00385 <font class="keywordtype">unsigned</font> newline_anchor:1; +00386 +00387 <font class="comment">/* [[[end pattern_buffer]]] */</font> +00388 }; +00389 +00390 <font class="keyword">typedef</font> <font class="keyword">struct </font>re_pattern_buffer regex_t; +00391 +00392 <font class="comment">/* Type for byte offsets within the string. POSIX mandates this. */</font> +00393 <font class="keyword">typedef</font> <font class="keywordtype">int</font> regoff_t; +00394 +00395 +00396 <font class="comment">/* This is the structure we store register match data in. See</font> +00397 <font class="comment"> regex.texinfo for a full description of what registers match. */</font> +00398 <font class="keyword">struct </font>re_registers +00399 { +00400 <font class="keywordtype">unsigned</font> num_regs; +00401 regoff_t *start; +00402 regoff_t *end; +00403 }; +00404 +00405 +00406 <font class="comment">/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,</font> +00407 <font class="comment"> `re_match_2' returns information about at least this many registers</font> +00408 <font class="comment"> the first time a `regs' structure is passed. */</font> +00409 <font class="preprocessor">#ifndef RE_NREGS</font> +00410 <font class="preprocessor"></font><font class="preprocessor">#define RE_NREGS 30</font> +00411 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00412 <font class="preprocessor"></font> +00413 +00414 <font class="comment">/* POSIX specification for registers. Aside from the different names than</font> +00415 <font class="comment"> `re_registers', POSIX uses an array of structures, instead of a</font> +00416 <font class="comment"> structure of arrays. */</font> +00417 <font class="keyword">typedef</font> <font class="keyword">struct</font> +00418 <font class="keyword"> </font>{ +00419 regoff_t rm_so; <font class="comment">/* Byte offset from string's start to substring's start. */</font> +00420 regoff_t rm_eo; <font class="comment">/* Byte offset from string's start to substring's end. */</font> +00421 } +00422 regmatch_t; +00423 +00424 <font class="comment">/* Declarations for routines. */</font> +00425 +00426 <font class="comment">/* To avoid duplicating every routine declaration -- once with a</font> +00427 <font class="comment"> prototype (if we are ANSI), and once without (if we aren't) -- we</font> +00428 <font class="comment"> use the following macro to declare argument types. This</font> +00429 <font class="comment"> unfortunately clutters up the declarations a bit, but I think it's</font> +00430 <font class="comment"> worth it. */</font> +00431 <font class="preprocessor">#ifndef __STDC__</font> +00432 <font class="preprocessor"></font><font class="preprocessor">#define __STDC__ 1</font> +00433 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00434 <font class="preprocessor"></font><font class="preprocessor">#if __STDC__</font> +00435 <font class="preprocessor"></font> +00436 <font class="preprocessor">#define _RE_ARGS(args) args</font> +00437 <font class="preprocessor"></font> +00438 <font class="preprocessor">#else </font><font class="comment">/* not __STDC__ */</font> +00439 +00440 <font class="preprocessor">#define _RE_ARGS(args) ()</font> +00441 <font class="preprocessor"></font> +00442 <font class="preprocessor">#endif </font><font class="comment">/* not __STDC__ */</font> +00443 +00444 <font class="comment">/* Sets the current default syntax to SYNTAX, and return the old syntax.</font> +00445 <font class="comment"> You can also simply assign to the `re_syntax_options' variable. */</font> +00446 <font class="keyword">extern</font> reg_syntax_t re_set_syntax _RE_ARGS ((reg_syntax_t syntax)); +00447 +00448 <font class="comment">/* Compile the regular expression PATTERN, with length LENGTH</font> +00449 <font class="comment"> and syntax given by the global `re_syntax_options', into the buffer</font> +00450 <font class="comment"> BUFFER. Return NULL if successful, and an error string if not. */</font> +00451 <font class="keyword">extern</font> <font class="keyword">const</font> <font class="keywordtype">char</font> *re_compile_pattern +00452 _RE_ARGS ((<font class="keyword">const</font> <font class="keywordtype">char</font> *pattern, size_t length, +00453 <font class="keyword">struct</font> re_pattern_buffer * buffer)); +00454 +00455 +00456 <font class="comment">/* Compile a fastmap for the compiled pattern in BUFFER; used to</font> +00457 <font class="comment"> accelerate searches. Return 0 if successful and -2 if was an</font> +00458 <font class="comment"> internal error. */</font> +00459 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_compile_fastmap +00460 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer)); +00461 +00462 +00463 <font class="comment">/* Search in the string STRING (with length LENGTH) for the pattern</font> +00464 <font class="comment"> compiled into BUFFER. Start searching at position START, for RANGE</font> +00465 <font class="comment"> characters. Return the starting position of the match, -1 for no</font> +00466 <font class="comment"> match, or -2 for an internal error. Also return register</font> +00467 <font class="comment"> information in REGS (if REGS and BUFFER->no_sub are nonzero). */</font> +00468 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_search +00469 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *string, +00470 <font class="keywordtype">int</font> length, <font class="keywordtype">int</font> start, <font class="keywordtype">int</font> range, <font class="keyword">struct</font> re_registers * regs)); +00471 +00472 +00473 <font class="comment">/* Like `re_search', but search in the concatenation of STRING1 and</font> +00474 <font class="comment"> STRING2. Also, stop searching at index START + STOP. */</font> +00475 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_search_2 +00476 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *string1, +00477 <font class="keywordtype">int</font> length1, <font class="keyword">const</font> <font class="keywordtype">char</font> *string2, <font class="keywordtype">int</font> length2, +00478 <font class="keywordtype">int</font> start, <font class="keywordtype">int</font> range, <font class="keyword">struct</font> re_registers * regs, <font class="keywordtype">int</font> stop)); +00479 +00480 +00481 <font class="comment">/* Like `re_search', but return how many characters in STRING the regexp</font> +00482 <font class="comment"> in BUFFER matched, starting at position START. */</font> +00483 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_match +00484 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *string, +00485 <font class="keywordtype">int</font> length, <font class="keywordtype">int</font> start, <font class="keyword">struct</font> re_registers * regs)); +00486 +00487 +00488 <font class="comment">/* Relates to `re_match' as `re_search_2' relates to `re_search'. */</font> +00489 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_match_2 +00490 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer, <font class="keyword">const</font> <font class="keywordtype">char</font> *string1, +00491 <font class="keywordtype">int</font> length1, <font class="keyword">const</font> <font class="keywordtype">char</font> *string2, <font class="keywordtype">int</font> length2, +00492 <font class="keywordtype">int</font> start, <font class="keyword">struct</font> re_registers * regs, <font class="keywordtype">int</font> stop)); +00493 +00494 +00495 <font class="comment">/* Set REGS to hold NUM_REGS registers, storing them in STARTS and</font> +00496 <font class="comment"> ENDS. Subsequent matches using BUFFER and REGS will use this memory</font> +00497 <font class="comment"> for recording register information. STARTS and ENDS must be</font> +00498 <font class="comment"> allocated with malloc, and must each be at least `NUM_REGS * sizeof</font> +00499 <font class="comment"> (regoff_t)' bytes long.</font> +00500 <font class="comment"></font> +00501 <font class="comment"> If NUM_REGS == 0, then subsequent matches should allocate their own</font> +00502 <font class="comment"> register data.</font> +00503 <font class="comment"></font> +00504 <font class="comment"> Unless this function is called, the first search or match using</font> +00505 <font class="comment"> PATTERN_BUFFER will allocate its own register data, without</font> +00506 <font class="comment"> freeing the old data. */</font> +00507 <font class="keyword">extern</font> <font class="keywordtype">void</font> re_set_registers +00508 _RE_ARGS ((<font class="keyword">struct</font> re_pattern_buffer * buffer, <font class="keyword">struct</font> re_registers * regs, +00509 <font class="keywordtype">unsigned</font> num_regs, regoff_t * starts, regoff_t * ends)); +00510 +00511 <font class="preprocessor">#ifdef _REGEX_RE_COMP</font> +00512 <font class="preprocessor"></font><font class="preprocessor">#ifndef _CRAY</font> +00513 <font class="preprocessor"></font><font class="comment">/* 4.2 bsd compatibility. */</font> +00514 <font class="keyword">extern</font> <font class="keywordtype">char</font> *re_comp _RE_ARGS ((<font class="keyword">const</font> <font class="keywordtype">char</font> *)); +00515 <font class="keyword">extern</font> <font class="keywordtype">int</font> re_exec _RE_ARGS ((<font class="keyword">const</font> <font class="keywordtype">char</font> *)); +00516 <font class="preprocessor">#endif</font> +00517 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00518 <font class="preprocessor"></font> +00519 <font class="comment">/* POSIX compatibility. */</font> +00520 <font class="keyword">extern</font> <font class="keywordtype">int</font> regcomp +00521 _RE_ARGS ((regex_t * preg, <font class="keyword">const</font> <font class="keywordtype">char</font> *pattern, <font class="keywordtype">int</font> cflags)); +00522 <font class="keyword">extern</font> <font class="keywordtype">int</font> regexec +00523 _RE_ARGS ( +00524 (<font class="keyword">const</font> regex_t * preg, <font class="keyword">const</font> <font class="keywordtype">char</font> *string, size_t nmatch, +00525 regmatch_t pmatch[], <font class="keywordtype">int</font> eflags)); +00526 <font class="keyword">extern</font> size_t regerror +00527 _RE_ARGS ( +00528 (<font class="keywordtype">int</font> errcode, <font class="keyword">const</font> regex_t * preg, <font class="keywordtype">char</font> *errbuf, +00529 size_t errbuf_size)); +00530 <font class="keyword">extern</font> <font class="keywordtype">void</font> regfree _RE_ARGS ((regex_t * preg)); +00531 +00532 +00533 <font class="preprocessor">#ifdef __cplusplus</font> +00534 <font class="preprocessor"></font>} +00535 <font class="preprocessor">#endif </font><font class="comment">/* C++ */</font> +00536 +00537 <font class="preprocessor">#endif </font><font class="comment">/* regex.h */</font> +00538 +00539 <font class="comment">/*</font> +00540 <font class="comment">Local variables:</font> +00541 <font class="comment">make-backup-files: t</font> +00542 <font class="comment">version-control: t</font> +00543 <font class="comment">trim-versions-without-asking: nil</font> +00544 <font class="comment">End:</font> +00545 <font class="comment">*/</font> +</pre></div><hr><address align="right"><small>Generated on Thu Jun 20 22:13:00 2002 for The Sword Project by +<a href="http://www.doxygen.org/index.html"> +<img src="doxygen.png" alt="doxygen" align="middle" border=0 +width=110 height=53></a>1.2.15 </small></address> +</body> +</html> |