branches/pcre16/pcre_fullinfo.c

/*************************************************
*      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) 1997-2011 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_fullinfo(), which returns
information about a compiled pattern. */


#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "pcre_internal.h"


/*************************************************
*        Return info about compiled pattern      *
*************************************************/

/* This is a newer "info" function which has an extensible interface so
that additional items can be added compatibly.

Arguments:
  argument_re      points to compiled code
  extra_data       points extra data, or NULL
  what             what information is required
  where            where to put the information

Returns:           0 if data returned, negative on error
*/

PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_fullinfo(const pcre *argument_re, const pcre_extra *extra_data, int what,
  void *where)
{
real_pcre internal_re;
pcre_study_data internal_study;
const real_pcre *re = (const real_pcre *)argument_re;
const pcre_study_data *study = NULL;

if (re == NULL || where == NULL) return PCRE_ERROR_NULL;

if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
  study = (const pcre_study_data *)extra_data->study_data;

if (re->magic_number != MAGIC_NUMBER)
  {
  re = PRIV(try_flipped)(re, &internal_re, study, &internal_study);
  if (re == NULL) return PCRE_ERROR_BADMAGIC;
  if (study != NULL) study = &internal_study;
  }

switch (what)
  {
  case PCRE_INFO_OPTIONS:
  *((unsigned long int *)where) = re->options & PUBLIC_COMPILE_OPTIONS;
  break;

  case PCRE_INFO_SIZE:
  *((size_t *)where) = re->size;
  break;

  case PCRE_INFO_STUDYSIZE:
  *((size_t *)where) = (study == NULL)? 0 : study->size;
  break;

  case PCRE_INFO_CAPTURECOUNT:
  *((int *)where) = re->top_bracket;
  break;

  case PCRE_INFO_BACKREFMAX:
  *((int *)where) = re->top_backref;
  break;

  case PCRE_INFO_FIRSTBYTE:
  *((int *)where) =
    ((re->flags & PCRE_FIRSTSET) != 0)? re->first_char :
    ((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
  break;

  /* Make sure we pass back the pointer to the bit vector in the external
  block, not the internal copy (with flipped integer fields). */

  case PCRE_INFO_FIRSTTABLE:
  *((const pcre_uint8 **)where) =
    (study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)?
      ((const pcre_study_data *)extra_data->study_data)->start_bits : NULL;
  break;

  case PCRE_INFO_MINLENGTH:
  *((int *)where) =
    (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)?
      study->minlength : -1;
  break;

  case PCRE_INFO_JIT:
  *((int *)where) = extra_data != NULL &&
                    (extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
                    extra_data->executable_jit != NULL;
  break;

  case PCRE_INFO_LASTLITERAL:
  *((int *)where) =
    ((re->flags & PCRE_REQCHSET) != 0)? re->req_char : -1;
  break;

  case PCRE_INFO_NAMEENTRYSIZE:
  *((int *)where) = re->name_entry_size;
  break;

  case PCRE_INFO_NAMECOUNT:
  *((int *)where) = re->name_count;
  break;

  case PCRE_INFO_NAMETABLE:
  *((const pcre_uchar **)where) = (const pcre_uchar *)re + re->name_table_offset;
  break;

  case PCRE_INFO_DEFAULT_TABLES:
  *((const pcre_uint8 **)where) = (const pcre_uint8 *)(PRIV(default_tables));
  break;

  /* From release 8.00 this will always return TRUE because NOPARTIAL is
  no longer ever set (the restrictions have been removed). */

  case PCRE_INFO_OKPARTIAL:
  *((int *)where) = (re->flags & PCRE_NOPARTIAL) == 0;
  break;

  case PCRE_INFO_JCHANGED:
  *((int *)where) = (re->flags & PCRE_JCHANGED) != 0;
  break;

  case PCRE_INFO_HASCRORLF:
  *((int *)where) = (re->flags & PCRE_HASCRORLF) != 0;
  break;

  default: return PCRE_ERROR_BADOPTION;
  }

return 0;
}

/* End of pcre_fullinfo.c */
1	nigel	77	/*************************************************
2			* Perl-Compatible Regular Expressions *
3			*************************************************/
4
5	ph10	305	/* PCRE is a library of functions to support regular expressions whose syntax
6	nigel	77	and semantics are as close as possible to those of the Perl 5 language.
7
8			Written by Philip Hazel
9	ph10	666	Copyright (c) 1997-2011 University of Cambridge
10	nigel	77
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 module contains the external function pcre_fullinfo(), which returns
42			information about a compiled pattern. */
43
44
45	ph10	200	#ifdef HAVE_CONFIG_H
46	ph10	236	#include "config.h"
47	ph10	200	#endif
48	ph10	199
49	nigel	77	#include "pcre_internal.h"
50
51
52			/*************************************************
53			* Return info about compiled pattern *
54			*************************************************/
55
56			/* This is a newer "info" function which has an extensible interface so
57			that additional items can be added compatibly.
58
59			Arguments:
60			argument_re points to compiled code
61			extra_data points extra data, or NULL
62			what what information is required
63			where where to put the information
64
65			Returns: 0 if data returned, negative on error
66			*/
67
68	ph10	359	PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
69	nigel	77	pcre_fullinfo(const pcre argument_re, const pcre_extra extra_data, int what,
70			void *where)
71			{
72			real_pcre internal_re;
73			pcre_study_data internal_study;
74			const real_pcre re = (const real_pcre )argument_re;
75			const pcre_study_data *study = NULL;
76
77			if (re == NULL \|\| where == NULL) return PCRE_ERROR_NULL;
78
79			if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
80			study = (const pcre_study_data *)extra_data->study_data;
81
82			if (re->magic_number != MAGIC_NUMBER)
83			{
84	zherczeg	764	re = PRIV(try_flipped)(re, &internal_re, study, &internal_study);
85	nigel	77	if (re == NULL) return PCRE_ERROR_BADMAGIC;
86			if (study != NULL) study = &internal_study;
87			}
88
89			switch (what)
90			{
91			case PCRE_INFO_OPTIONS:
92	ph10	389	((unsigned long int )where) = re->options & PUBLIC_COMPILE_OPTIONS;
93	nigel	77	break;
94
95			case PCRE_INFO_SIZE:
96			((size_t )where) = re->size;
97			break;
98
99			case PCRE_INFO_STUDYSIZE:
100			((size_t )where) = (study == NULL)? 0 : study->size;
101			break;
102
103			case PCRE_INFO_CAPTURECOUNT:
104			((int )where) = re->top_bracket;
105			break;
106
107			case PCRE_INFO_BACKREFMAX:
108			((int )where) = re->top_backref;
109			break;
110
111			case PCRE_INFO_FIRSTBYTE:
112			((int )where) =
113	zherczeg	774	((re->flags & PCRE_FIRSTSET) != 0)? re->first_char :
114	ph10	230	((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
115	nigel	77	break;
116
117			/* Make sure we pass back the pointer to the bit vector in the external
118			block, not the internal copy (with flipped integer fields). */
119
120			case PCRE_INFO_FIRSTTABLE:
121	ph10	756	((const pcre_uint8 *)where) =
122	ph10	455	(study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)?
123	nigel	77	((const pcre_study_data *)extra_data->study_data)->start_bits : NULL;
124			break;
125	ph10	461
126	ph10	455	case PCRE_INFO_MINLENGTH:
127			((int )where) =
128			(study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)?
129			study->minlength : -1;
130	ph10	461	break;
131	nigel	77
132	ph10	666	case PCRE_INFO_JIT:
133	ph10	691	((int )where) = extra_data != NULL &&
134	ph10	666	(extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
135			extra_data->executable_jit != NULL;
136			break;
137
138	nigel	77	case PCRE_INFO_LASTLITERAL:
139			((int )where) =
140	zherczeg	774	((re->flags & PCRE_REQCHSET) != 0)? re->req_char : -1;
141	nigel	77	break;
142
143			case PCRE_INFO_NAMEENTRYSIZE:
144			((int )where) = re->name_entry_size;
145			break;
146
147			case PCRE_INFO_NAMECOUNT:
148			((int )where) = re->name_count;
149			break;
150
151			case PCRE_INFO_NAMETABLE:
152	ph10	756	((const pcre_uchar )where) = (const pcre_uchar )re + re->name_table_offset;
153	nigel	77	break;
154
155			case PCRE_INFO_DEFAULT_TABLES:
156	zherczeg	764	((const pcre_uint8 )where) = (const pcre_uint8 )(PRIV(default_tables));
157	nigel	77	break;
158	ph10	172
159	ph10	426	/* From release 8.00 this will always return TRUE because NOPARTIAL is
160			no longer ever set (the restrictions have been removed). */
161	ph10	461
162	ph10	169	case PCRE_INFO_OKPARTIAL:
163	ph10	230	((int )where) = (re->flags & PCRE_NOPARTIAL) == 0;
164	ph10	169	break;
165	ph10	172
166	ph10	169	case PCRE_INFO_JCHANGED:
167	ph10	230	((int )where) = (re->flags & PCRE_JCHANGED) != 0;
168	ph10	172	break;
169	nigel	77
170	ph10	226	case PCRE_INFO_HASCRORLF:
171	ph10	230	((int )where) = (re->flags & PCRE_HASCRORLF) != 0;
172	ph10	226	break;
173
174	nigel	77	default: return PCRE_ERROR_BADOPTION;
175			}
176
177			return 0;
178			}
179
180			/* End of pcre_fullinfo.c */
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