summaryrefslogtreecommitdiffstats
path: root/kpilot/lib/pilotAppInfo.h
blob: b14cf0acec226af829aafc45df7a622201714c0c (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
#ifndef _KPILOT_PILOTAPPINFO_H
#define _KPILOT_PILOTAPPINFO_H
/* pilotAppInfo.h			KPilot
**
** Copyright (C) 2005-2006 Adriaan de Groot <groot@kde.org>
**
*/

/*
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU Lesser General Public License as published by
** the Free Software Foundation; either version 2.1 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with this program in a file called COPYING; if not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
** MA 02110-1301, USA.
*/

/*
** Bug reports and questions can be sent to kde-pim@kde.org
*/

#include "pilotLinkVersion.h"

#include "pilot.h"
#include "pilotDatabase.h"

/**
* A database on the handheld has an "AppInfo" block at the beginning
* with some database-specific information and a common part.
* This base class deals with the common part, the categories.
*
* Most data in the handheld is stored in @em categories ; every
* record in every database, for instance, has a category assigned
* to it (perhaps "Unfiled", but that's just another category).
*
* Every database has a category table assigning labels to the
* categories that exist. There are CATEGORY_COUNT (16) categories
* available for each database; labels may vary per database.
*
* This class encapsulates the basic category table manipulations.
*/
class KDE_EXPORT PilotAppInfoBase
{
protected:
	/** Initialize class members after reading header, to alias data elsewhere.
	* Only for use by the (derived) template classes below.
	*/
	void init(struct CategoryAppInfo *c, int len)
	{
		fC = c;
		fLen = len ;
	} ;

public:
	/** Constructor. This is for use by derived classes (using the template below
	* only, and says that the category info in the base class aliases data in
	* the derived class. Remember to call init()!
	*/
	PilotAppInfoBase() : fC(0L), fLen(0), fOwn(false) { } ;

	/** Constructor, intended for untyped access to the AppInfo only. This throws
	* away everything but the category information. In this variety, the
	* CategoryAppInfo structure is owned by the PilotAppInfoBase object.
	*/
	PilotAppInfoBase(PilotDatabase *d);

	/** Destructor. */
	virtual ~PilotAppInfoBase();

	/** Retrieve the most basic part of the AppInfo block -- the category
	* information which is guaranteed to be the first 240-odd bytes of
	* a database.
	*/
	struct CategoryAppInfo *categoryInfo()
	{
		return fC;
	} ;

	/** Const version of the above function. */
	inline const struct CategoryAppInfo *categoryInfo() const
	{
		return fC;
	} ;

	/** Returns the length of the (whole) AppInfo block. */
	inline PI_SIZE_T length() const
	{
		return fLen;
	} ;

	/** @see findCategory(const TQString &name, bool unknownIsUnfiled, struct CategoryAppInfo *info). */
	inline int findCategory(const TQString &name, bool unknownIsUnfiled = false) const
	{
		return Pilot::findCategory(fC,name,unknownIsUnfiled);
	} ;

	/** Gets a single category name. Returns TQString::null if there is no
	* such category number @p i . */
	inline TQString categoryName(unsigned int i) const
	{
		return Pilot::categoryName(fC,i);
	}

	/** Sets a category name. @return true if this succeeded. @return false
	* on failure, e.g. the index @p i was out of range or the category name
	* was invalid. Category names that are too long are truncated to 15 characters.
	*/
	bool setCategoryName(unsigned int i, const TQString &s);

	/** For debugging, display all the category names */
	inline void dump() const
	{
		Pilot::dumpCategories(fC);
	};

protected:
	struct CategoryAppInfo *fC;
	PI_SIZE_T fLen;

	bool fOwn;
} ;

/** A template class for reading and interpreting AppInfo blocks;
* the idea is that it handles all the boilerplate code for reading
* the app block, converting it to the right kind, and then unpacking
* it. Template parameters are the type (struct, from pilot-link probably)
* of the interpreted appinfo, and the pack and unpack functions for it
* (again, from pilot-link).
*/
template <typename appinfo,
#if PILOT_LINK_IS(0,12,2)
	/* There are additional consts introduced in 0.12.2 */
	int(*unpack)(appinfo *, const unsigned char *, PI_SIZE_T),
	int(*pack)(const appinfo *, unsigned char *, PI_SIZE_T)
#else
	int(*unpack)(appinfo *, unsigned char *, PI_SIZE_T),
	int(*pack)(appinfo *, unsigned char *, PI_SIZE_T)
#endif
	>
class PilotAppInfo : public PilotAppInfoBase
{
public:
	/** Constructor. Read the appinfo from database @p d and
	* interpret it.
	*/
	PilotAppInfo(PilotDatabase *d) : PilotAppInfoBase()
	{
		int appLen = Pilot::MAX_APPINFO_SIZE;
		unsigned char buffer[Pilot::MAX_APPINFO_SIZE];

		memset(&fInfo,0,sizeof(fInfo));
		if (d && d->isOpen())
		{
			appLen = d->readAppBlock(buffer,appLen);
			(*unpack)(&fInfo, buffer, appLen);
			// fInfo is just a struct, so we can point to it anyway.
			init(&fInfo.category,appLen);
		}
		else
		{
			delete fC;
			fC = 0L;
			fLen = 0;
			init(&fInfo.category,sizeof(fInfo));
		}
	} ;

	PilotAppInfo()
	{
		memset(&fInfo,0,sizeof(fInfo));
		init(&fInfo.category,sizeof(fInfo));
	}


	/** Write this appinfo block to the database @p d; returns
	* the number of bytes written or -1 on failure. This
	* function is robust when called with a NULL database @p d.
	*/
	int writeTo(PilotDatabase *d)
	{
		unsigned char buffer[Pilot::MAX_APPINFO_SIZE];
		if (!d || !d->isOpen())
		{
			return -1;
		}
		int appLen = (*pack)(&fInfo, buffer, length());
		if (appLen > 0)
		{
			d->writeAppBlock(buffer,appLen);
		}
		return appLen;
	} ;

	/** Returns a (correctly typed) pointer to the interpreted
	* appinfo block.
	*/
	appinfo *info() { return &fInfo; } ;
	/** Returns a const (correctly typed) pointer to the interpreted
	* appinfo block.
	*/
	const appinfo *info() const { return &fInfo; } ;

protected:
	appinfo fInfo;
} ;


#endif