1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.
*
* The Initial Developer of the Original Code is IBM Corporation.
* Portions created by IBM Corporation are Copyright (C) 2003
* IBM Corporation. All Rights Reserved.
*
* Contributor(s):
* Darin Fisher <darin@meer.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* computes the aggregate string length
*/
nsTSubstringTuple_CharT::size_type
nsTSubstringTuple_CharT::Length() const
{
PRUint32 len;
if (mHead)
len = mHead->Length();
else
len = TO_SUBSTRING(mFragA).Length();
return len + TO_SUBSTRING(mFragB).Length();
}
/**
* writes the aggregate string to the given buffer. bufLen is assumed
* to be equal to or greater than the value returned by the Length()
* method. the string written to |buf| is not null-terminated.
*/
void
nsTSubstringTuple_CharT::WriteTo( char_type *buf, PRUint32 bufLen ) const
{
const substring_type& b = TO_SUBSTRING(mFragB);
NS_ASSERTION(bufLen >= b.Length(), "buffer too small");
PRUint32 headLen = bufLen - b.Length();
if (mHead)
{
mHead->WriteTo(buf, headLen);
}
else
{
const substring_type& a = TO_SUBSTRING(mFragA);
NS_ASSERTION(a.Length() == headLen, "buffer incorrectly sized");
char_traits::copy(buf, a.Data(), a.Length());
}
char_traits::copy(buf + headLen, b.Data(), b.Length());
#if 0
// we need to write out data into |buf|, ending at |buf+bufLen|. so our
// data needs to precede |buf+bufLen| exactly. we trust that the buffer
// was properly sized!
const substring_type& b = TO_SUBSTRING(mFragB);
NS_ASSERTION(bufLen >= b.Length(), "buffer is too small");
char_traits::copy(buf + bufLen - b.Length(), b.Data(), b.Length());
bufLen -= b.Length();
if (mHead)
{
mHead->WriteTo(buf, bufLen);
}
else
{
const substring_type& a = TO_SUBSTRING(mFragA);
NS_ASSERTION(bufLen == a.Length(), "buffer is too small");
char_traits::copy(buf, a.Data(), a.Length());
}
#endif
}
/**
* returns true if this tuple is dependent on (i.e., overlapping with)
* the given char sequence.
*/
PRBool
nsTSubstringTuple_CharT::IsDependentOn( const char_type *start, const char_type *end ) const
{
// we start with the right-most fragment since it is faster to check.
if (TO_SUBSTRING(mFragB).IsDependentOn(start, end))
return PR_TRUE;
if (mHead)
return mHead->IsDependentOn(start, end);
return TO_SUBSTRING(mFragA).IsDependentOn(start, end);
}
|
