summaryrefslogtreecommitdiffstats
path: root/kradio3/src/stationlistxmlhandler.cpp
blob: 1bd09edd556a3e77f8873a05dd23d2cb18fada95 (plain)
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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/***************************************************************************
                          StationListXmlHandler.cpp  -  description
                             -------------------
    begin                : Son Jan 12 2003
    copyright            : (C) 2003 by Martin Witte
    email                : witte@kawo1.rwth-aachen.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "include/stationlistxmlhandler.h"
#include <klocale.h>

const char *KRadioConfigElement         = "kradiorc";

const char *StationListElement          = "stationlist";
const char *compatStationElement        = "station";

const char *StationListInfo             = "info";
const char *StationListInfoMaintainer   = "maintainer";
const char *StationListInfoCountry      = "country";
const char *StationListInfoCity         = "city";
const char *StationListInfoMedia        = "media";
const char *StationListInfoComments     = "comments";
const char *StationListInfoChanged      = "changed";
const char *StationListInfoCreator      = "creator";

const char *StationListFormat           = "format";


StationListXmlHandler::StationListXmlHandler (const IErrorLogClient &logger)
    : m_logger(logger),
      m_compatMode (false)
{
    m_newStation = NULL;
}


StationListXmlHandler::~StationListXmlHandler ()
{
}


bool StationListXmlHandler::startDocument ()
{
    m_status.clear();

    m_stations.clear();
    clearNewStation();

    return true;
}



#define START_ELEMENT_ERROR    m_logger.logError("StationListXmlHandler::startElement: " + \
                                        i18n("misplaced element %1") \
                                        .arg(qname));\
                               return false;

bool StationListXmlHandler::startElement (const TQString &/*ns*/, const TQString &/*localname*/,
                                          const TQString& _qname, const TQXmlAttributes &)
{
    TQString qname = _qname;
    if (qname == KRadioConfigElement) {
        if (m_status.size()) { START_ELEMENT_ERROR }

    // station list
    } else if (qname == StationListElement) {
        if (!m_status.size() || m_status.back() != KRadioConfigElement) { START_ELEMENT_ERROR }
        m_stations.clear();
        clearNewStation();

    } else if (qname == StationListFormat) {
        if (!m_status.size() || m_status.back() != StationListElement) { START_ELEMENT_ERROR }

    } else if (qname == StationListInfo) {
        if (!m_status.size() || m_status.back() != StationListElement) { START_ELEMENT_ERROR }

    } else if (qname == StationListInfoMaintainer ||
               qname == StationListInfoCountry ||
               qname == StationListInfoCity ||
               qname == StationListInfoMedia ||
               qname == StationListInfoComments ||
               qname == StationListInfoChanged ||
               qname == StationListInfoCreator
               )
    {
        if (!m_status.size() || m_status.back() != StationListInfo) { START_ELEMENT_ERROR }

    } else if (!m_newStation && m_status.size() && m_status.back() == StationListElement) {

        if (qname == compatStationElement) {
            qname = "FrequencyRadioStation";
            m_compatMode = true;
        }

        const RadioStation *x = RadioStation::getStationClass(qname);
        m_newStation = x ? x->copy() : NULL;

        if (!m_newStation) { START_ELEMENT_ERROR }

    } else if (m_newStation && m_status.size() && m_status.back() == m_newStation->getClassName()) {

        // check done later when characters arrive

    } else { // unknown
        m_logger.logWarning("StationListXmlHandler::startElement: " +
                   i18n("unknown or unexpected element %1").arg(qname));
    }

    m_status.push_back(qname);
    return true;
}


bool StationListXmlHandler::endElement (const TQString &/*ns*/, const TQString &/*localname*/,
                                        const TQString &_qname)
{
    TQString qname = _qname;
    if (qname == compatStationElement) {
        qname = "FrequencyRadioStation";
        m_compatMode = true;
    }

    if (m_status.size() && m_status.back() == qname) {

        if (m_newStation && qname == m_newStation->getClassName()) {
            m_stations.append(m_newStation);
            clearNewStation();
        }

        m_status.pop_back();

    } else {
        if (m_status.size()) {
            m_logger.logError("StationListXmlHandler::endElement: " +
                     i18n("expected element %1, but found %2")
                     .arg(m_status.back()).arg(qname));
        } else {
            m_logger.logError("StationListXmlHandler::endElement: " +
                     i18n("unexpected element %1").arg(qname));
        }
    }
    return true;
}


#define CHARACTERS_ERROR    m_logger.logError("StationListXmlHandler::characters: " + \
                                     i18n("invalid data for element %1") \
                                     .arg(stat)); \
                            return false;

bool StationListXmlHandler::characters (const TQString &ch)
{
    TQString stat = m_status.back();
    TQString str = ch.stripWhiteSpace();

    // Station parsing

    // information on list
    if (stat == StationListFormat) {

        if (str != STATION_LIST_FORMAT) {
            m_logger.logError(i18n("found a station list with unknown format %1").arg(str));
            return false;
        }

    } else if (stat == StationListInfo) {

    } else if (stat == StationListInfoMaintainer) {

        m_metaData.maintainer = str;

    } else if (stat == StationListInfoCountry) {

        m_metaData.country = str;

    } else if (stat == StationListInfoCity) {

        m_metaData.city = str;

    } else if (stat == StationListInfoMedia) {

        m_metaData.media = str;

    } else if (stat == StationListInfoComments) {

        m_metaData.comment = str;

    } else if (stat == StationListInfoChanged) {

        m_metaData.lastChange = TQDateTime::fromString(str, Qt::ISODate);

    } else if (stat == StationListInfoCreator) {

        // do nothing

    // stations

    } else if (m_newStation && m_newStation->getClassName() != stat) {

        if (!m_newStation->setProperty(stat, str)) {
            m_logger.logWarning("StationListXmlHandler::characters: " +
                       i18n("unknown property %1 for class %2")
                       .arg(stat)
                       .arg(m_newStation->getClassName()));
        }

    } else if (str.length()) {
        m_logger.logError("StationListXmlHandler::characters: " +
                 i18n("characters ignored for element %1").arg(stat));
    }
    return true;
}


void StationListXmlHandler::clearNewStation()
{
    if (m_newStation)
        delete m_newStation;
    m_newStation = NULL;
}