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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* This file is part of the libabw project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <libabw/libabw.h>
#include "ABWXMLHelper.h"
#include "ABWParser.h"
#include "libabw_internal.h"
/**
\mainpage libabw documentation
This document contains both the libabw API specification and the normal libabw
documentation.
\section api_docs libabw API documentation
The external libabw API is provided by the AbiDocument class. This class, combined
with the librevenge::RVNGTextInterface class, are the only two classes that will be of interest
for the application programmer using libabw.
\section lib_docs libabw documentation
If you are interrested in the structure of libabw itself, this whole document
would be a good starting point for exploring the interals of libabw. Mind that
this document is a work-in-progress, and will most likely not cover libabw for
the full 100%.
*/
/**
Analyzes the content of an input stream to see if it can be parsed
\param input The input stream
\return A confidence value which represents the likelyhood that the content from
the input stream can be parsed
*/
bool AbiDocument::isFileFormatSupported(librevenge::RVNGInputStream *input)
{
ABW_DEBUG_MSG(("AbiDocument::isFileFormatSupported\n"));
if (!input)
return false;
xmlTextReaderPtr reader = 0;
try
{
input->seek(0, librevenge::RVNG_SEEK_SET);
reader = libabw::xmlReaderForStream(input, 0, 0, XML_PARSE_NOBLANKS|XML_PARSE_NOENT|XML_PARSE_NONET|XML_PARSE_RECOVER);
if (!reader)
return false;
int ret = xmlTextReaderRead(reader);
while (ret == 1 && 1 != xmlTextReaderNodeType(reader))
ret = xmlTextReaderRead(reader);
if (ret != 1)
{
xmlFreeTextReader(reader);
return false;
}
const xmlChar *name = xmlTextReaderConstName(reader);
if (!name)
{
xmlFreeTextReader(reader);
return false;
}
if (!xmlStrEqual(name, BAD_CAST("abiword")))
{
if (!xmlStrEqual(name, BAD_CAST("awml")))
{
xmlFreeTextReader(reader);
return false;
}
}
// Checking the namespace of AbiWord documents.
const xmlChar *nsname = xmlTextReaderConstNamespaceUri(reader);
if (!nsname)
{
xmlFreeTextReader(reader);
return false;
}
if (!xmlStrEqual(nsname, BAD_CAST("http://www.abisource.com/awml.dtd")))
{
xmlFreeTextReader(reader);
return false;
}
xmlFreeTextReader(reader);
return true;
}
catch (...)
{
if (reader)
xmlFreeTextReader(reader);
return false;
}
}
/**
Parses the input stream content. It will make callbacks to the functions provided by a
librevenge::RVNGTextInterface class implementation when needed. This is often commonly called the
'main parsing routine'.
\param input The input stream
\param textInterface A librevenge::RVNGTextInterface implementation
\param password The password used to protect the document or NULL if the document
is not protected
\return A value that indicates whether the conversion was successful and in case it
was not, it indicates the reason of the error
*/
bool AbiDocument::parse(librevenge::RVNGInputStream *input, librevenge::RVNGTextInterface *textInterface)
{
ABW_DEBUG_MSG(("AbiDocument::parse\n"));
input->seek(0, librevenge::RVNG_SEEK_SET);
libabw::ABWParser parser(input, textInterface);
if (parser.parse())
return true;
return false;
}
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
|
