code/trunk/pcre_string_utils.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) 1997-2012 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 an internal function that is used to match an extended
class. It is used by both pcre_exec() and pcre_def_exec(). */


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

#include "pcre_internal.h"

#ifndef COMPILE_PCRE8

/*************************************************
*           Compare string utilities             *
*************************************************/

/* The following two functions compares two strings. Basically an strcmp
for non 8 bit characters.

Arguments:
  str1        first string
  str2        second string

Returns:      0 if both string are equal (like strcmp), 1 otherwise
*/

int
PRIV(strcmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2)
{
pcre_uchar c1;
pcre_uchar c2;

while (*str1 != '\0' || *str2 != '\0')
  {
  c1 = *str1++;
  c2 = *str2++;
  if (c1 != c2)
    return ((c1 > c2) << 1) - 1;
  }
/* Both length and characters must be equal. */
return 0;
}

int
PRIV(strcmp_uc_c8)(const pcre_uchar *str1, const char *str2)
{
const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
pcre_uchar c1;
pcre_uchar c2;

while (*str1 != '\0' || *ustr2 != '\0')
  {
  c1 = *str1++;
  c2 = (pcre_uchar)*ustr2++;
  if (c1 != c2)
    return ((c1 > c2) << 1) - 1;
  }
/* Both length and characters must be equal. */
return 0;
}

/* The following two functions compares two, fixed length
strings. Basically an strncmp for non 8 bit characters.

Arguments:
  str1        first string
  str2        second string
  num         size of the string

Returns:      0 if both string are equal (like strcmp), 1 otherwise
*/

int
PRIV(strncmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2, unsigned int num)
{
pcre_uchar c1;
pcre_uchar c2;

while (num-- > 0)
  {
  c1 = *str1++;
  c2 = *str2++;
  if (c1 != c2)
    return ((c1 > c2) << 1) - 1;
  }
/* Both length and characters must be equal. */
return 0;
}

int
PRIV(strncmp_uc_c8)(const pcre_uchar *str1, const char *str2, unsigned int num)
{
const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
pcre_uchar c1;
pcre_uchar c2;

while (num-- > 0)
  {
  c1 = *str1++;
  c2 = (pcre_uchar)*ustr2++;
  if (c1 != c2)
    return ((c1 > c2) << 1) - 1;
  }
/* Both length and characters must be equal. */
return 0;
}

/* The following function returns with the length of
a zero terminated string. Basically an strlen for non 8 bit characters.

Arguments:
  str         string

Returns:      length of the string
*/

unsigned int
PRIV(strlen_uc)(const pcre_uchar *str)
{
unsigned int len = 0;
while (*str++ != 0)
  len++;
return len;
}

#endif /* COMPILE_PCRE8 */

/* End of pcre_string_utils.c */
1	/*************************************************
2	* Perl-Compatible Regular Expressions *
3	*************************************************/
4
5	/* PCRE is a library of functions to support regular expressions whose syntax
6	and semantics are as close as possible to those of the Perl 5 language.
7
8	Written by Philip Hazel
9	Copyright (c) 1997-2012 University of Cambridge
10
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 an internal function that is used to match an extended
42	class. It is used by both pcre_exec() and pcre_def_exec(). */
43
44
45	#ifdef HAVE_CONFIG_H
46	#include "config.h"
47	#endif
48
49	#include "pcre_internal.h"
50
51	#ifndef COMPILE_PCRE8
52
53	/*************************************************
54	* Compare string utilities *
55	*************************************************/
56
57	/* The following two functions compares two strings. Basically an strcmp
58	for non 8 bit characters.
59
60	Arguments:
61	str1 first string
62	str2 second string
63
64	Returns: 0 if both string are equal (like strcmp), 1 otherwise
65	*/
66
67	int
68	PRIV(strcmp_uc_uc)(const pcre_uchar str1, const pcre_uchar str2)
69	{
70	pcre_uchar c1;
71	pcre_uchar c2;
72
73	while (str1 != '\0' \|\| str2 != '\0')
74	{
75	c1 = *str1++;
76	c2 = *str2++;
77	if (c1 != c2)
78	return ((c1 > c2) << 1) - 1;
79	}
80	/* Both length and characters must be equal. */
81	return 0;
82	}
83
84	int
85	PRIV(strcmp_uc_c8)(const pcre_uchar str1, const char str2)
86	{
87	const pcre_uint8 ustr2 = (pcre_uint8 )str2;
88	pcre_uchar c1;
89	pcre_uchar c2;
90
91	while (str1 != '\0' \|\| ustr2 != '\0')
92	{
93	c1 = *str1++;
94	c2 = (pcre_uchar)*ustr2++;
95	if (c1 != c2)
96	return ((c1 > c2) << 1) - 1;
97	}
98	/* Both length and characters must be equal. */
99	return 0;
100	}
101
102	/* The following two functions compares two, fixed length
103	strings. Basically an strncmp for non 8 bit characters.
104
105	Arguments:
106	str1 first string
107	str2 second string
108	num size of the string
109
110	Returns: 0 if both string are equal (like strcmp), 1 otherwise
111	*/
112
113	int
114	PRIV(strncmp_uc_uc)(const pcre_uchar str1, const pcre_uchar str2, unsigned int num)
115	{
116	pcre_uchar c1;
117	pcre_uchar c2;
118
119	while (num-- > 0)
120	{
121	c1 = *str1++;
122	c2 = *str2++;
123	if (c1 != c2)
124	return ((c1 > c2) << 1) - 1;
125	}
126	/* Both length and characters must be equal. */
127	return 0;
128	}
129
130	int
131	PRIV(strncmp_uc_c8)(const pcre_uchar str1, const char str2, unsigned int num)
132	{
133	const pcre_uint8 ustr2 = (pcre_uint8 )str2;
134	pcre_uchar c1;
135	pcre_uchar c2;
136
137	while (num-- > 0)
138	{
139	c1 = *str1++;
140	c2 = (pcre_uchar)*ustr2++;
141	if (c1 != c2)
142	return ((c1 > c2) << 1) - 1;
143	}
144	/* Both length and characters must be equal. */
145	return 0;
146	}
147
148	/* The following function returns with the length of
149	a zero terminated string. Basically an strlen for non 8 bit characters.
150
151	Arguments:
152	str string
153
154	Returns: length of the string
155	*/
156
157	unsigned int
158	PRIV(strlen_uc)(const pcre_uchar *str)
159	{
160	unsigned int len = 0;
161	while (*str++ != 0)
162	len++;
163	return len;
164	}
165
166	#endif /* COMPILE_PCRE8 */
167
168	/* End of pcre_string_utils.c */