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Revision 1.1 - (hide annotations) (download)
Thu Sep 2 09:57:48 2004 UTC (10 years, 2 months ago) by usata
Branch: MAIN
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License file required by app-text/xmlformat.

1 usata 1.1 xmlformat is distributed under a BSD-style license. This license
2     applies to the entire xmlformat distribution, with the exception of
3     the REX parser (described below).
4    
5     Copyright (c) 2004, Kitebird, LLC. All rights reserved.
6    
7     Redistribution and use in source and binary forms, with or without
8     modification, are permitted provided that the following conditions
9     are met:
10    
11     1. Redistributions of source code must retain the above copyright
12     notice, this list of conditions and the following disclaimer.
13    
14     2. Redistributions in binary form must reproduce the above copyright
15     notice, this list of conditions and the following disclaimer in the
16     documentation and/or other materials provided with the distribution.
17    
18     3. Neither the name of Kitebird nor the names of its contributors may
19     be used to endorse or promote products derived from this software
20     without specific prior written permission.
21    
22     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25     ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26     LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32     POSSIBILITY OF SUCH DAMAGE.
33    
34     ----------------------------------------------------------------------
35     The REX parser
36    
37     xmlformat contains code based on the REX parser, which is Copyright (c) 1998,
38     Robert D. Cameron. REX is described in this document:
39    
40     http://www.cs.sfu.ca/~cameron/REX.html
41    
42     The document contains a Perl implementation of REX:
43    
44     --- begin REX code ---
45     # REX/Perl 1.0
46     # Robert D. Cameron "REX: XML Shallow Parsing with Regular Expressions",
47     # Technical Report TR 1998-17, School of Computing Science, Simon Fraser
48     # University, November, 1998.
49     # Copyright (c) 1998, Robert D. Cameron.
50     # The following code may be freely used and distributed provided that
51     # this copyright and citation notice remains intact and that modifications
52     # or additions are clearly identified.
53    
54     $TextSE = "[^<]+";
55     $UntilHyphen = "[^-]*-";
56     $Until2Hyphens = "$UntilHyphen(?:[^-]$UntilHyphen)*-";
57     $CommentCE = "$Until2Hyphens>?";
58     $UntilRSBs = "[^\\]]*](?:[^\\]]+])*]+";
59     $CDATA_CE = "$UntilRSBs(?:[^\\]>]$UntilRSBs)*>";
60     $S = "[ \\n\\t\\r]+";
61     $NameStrt = "[A-Za-z_:]|[^\\x00-\\x7F]";
62     $NameChar = "[A-Za-z0-9_:.-]|[^\\x00-\\x7F]";
63     $Name = "(?:$NameStrt)(?:$NameChar)*";
64     $QuoteSE = "\"[^\"]*\"|'[^']*'";
65     $DT_IdentSE = "$S$Name(?:$S(?:$Name|$QuoteSE))*";
66     $MarkupDeclCE = "(?:[^\\]\"'><]+|$QuoteSE)*>";
67     $S1 = "[\\n\\r\\t ]";
68     $UntilQMs = "[^?]*\\?+";
69     $PI_Tail = "\\?>|$S1$UntilQMs(?:[^>?]$UntilQMs)*>";
70     $DT_ItemSE =
71     "<(?:!(?:--$Until2Hyphens>|[^-]$MarkupDeclCE)|\\?$Name(?:$PI_Tail))|%$Name;|$S";
72     $DocTypeCE = "$DT_IdentSE(?:$S)?(?:\\[(?:$DT_ItemSE)*](?:$S)?)?>?";
73     $DeclCE =
74     "--(?:$CommentCE)?|\\[CDATA\\[(?:$CDATA_CE)?|DOCTYPE(?:$DocTypeCE)?";
75     $PI_CE = "$Name(?:$PI_Tail)?";
76     $EndTagCE = "$Name(?:$S)?>?";
77     $AttValSE = "\"[^<\"]*\"|'[^<']*'";
78     $ElemTagCE = "$Name(?:$S$Name(?:$S)?=(?:$S)?(?:$AttValSE))*(?:$S)?/?>?";
79     $MarkupSPE =
80     "<(?:!(?:$DeclCE)?|\\?(?:$PI_CE)?|/(?:$EndTagCE)?|(?:$ElemTagCE)?)";
81     $XML_SPE = "$TextSE|$MarkupSPE";
82    
83    
84     sub ShallowParse {
85     my($XML_document) = @_;
86     return $XML_document =~ /$XML_SPE/g;
87     }
88     --- end REX code ---
89    
90     The Perl and Ruby implementations of xmlformat contain parsers that
91     are based on the preceding code and are essentially the same, with the
92     exception of changes to variable and function names.

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