aboutsummaryrefslogtreecommitdiff
path: root/engines/titanic/true_talk/tt_quotes.cpp
blob: 2857a7bc6c62cf9441c93041057c28a25ca2aea3 (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
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "titanic/true_talk/tt_quotes.h"
#include "titanic/support/files_manager.h"
#include "titanic/titanic.h"
#include "common/algorithm.h"

namespace Titanic {

TTquotes::TTquotes() : _loaded(false), _dataP(nullptr), _dataSize(0),
		_field544(0) {
	Common::fill(&_tags[0], &_tags[256], 0);
}

TTquotes::~TTquotes() {
	delete[] _dataP;
}

void TTquotes::load() {
	Common::SeekableReadStream *r = g_vm->_filesManager->getResource("TEXT/JRQUOTES");
	size_t size = r->readUint32LE();
	_loaded = true;

	_dataSize = _field544 = size;
	_dataP = new char[size + 0x10];

	for (int idx = 0; idx < 256; ++idx)
		_tags[idx] = r->readUint32LE();

	for (int charIdx = 0; charIdx < 26; ++charIdx) {
		TTquotesLetter &letter = _alphabet[charIdx];
		int count = r->readUint32LE();

		// Load the list of entries for the given letter
		letter._entries.resize(count);
		for (int idx = 0; idx < count; ++idx) {
			letter._entries[idx]._tagIndex = r->readByte();
			letter._entries[idx]._maxSize = r->readByte();
			letter._entries[idx]._strP = _dataP + r->readUint32LE();
		}
	}

	// Read in buffer and then decode it
	r->read((byte *)_dataP, _dataSize);
	for (size_t idx = 0; idx < _dataSize; idx += 4)
		WRITE_LE_UINT32((byte *)_dataP + idx, READ_LE_UINT32((const byte *)_dataP + idx) ^ 0xA55A5AA5);

	delete r;
}

int TTquotes::find(const char *str)  const {
	if (!str || !*str)
		return 0;

	// Find start and end of string
	const char *startP = str, *endP = str;
	while (*endP)
		++endP;

	do {
		int tagId = find(startP, endP);
		if (tagId)
			return tagId;

		// Move to next following space or end of string
		while (*startP && *startP != ' ')
			++startP;
		// If it's a space, then move past it to start of next word
		while (*startP && *startP == ' ')
			++startP;

	} while (*startP);

	// No match
	return 0;
}

int TTquotes::find(const char *startP, const char *endP) const {
	int size = endP - startP;
	if (size < 3)
		return 0;

	uint index = MIN((uint)(*startP - 'a'), (uint)25);
	const TTquotesLetter &letter = _alphabet[index];
	if (letter._entries.empty())
		// No entries for the letter, so exit immediately
		return 0;

	int maxSize = size + 4;

	for (uint idx = 0; idx < letter._entries.size(); ++idx) {
		const TTquotesEntry &entry = letter._entries[idx];
		if (entry._maxSize > maxSize)
			continue;

		const char *srcP = startP;
		const char *destP = entry._strP;
		int srcIndex = index != 25 ? 1 : 0, destIndex = 0;
		if (*destP) {
			do {
				if (!srcP[srcIndex]) {
					break;
				} else if (srcP[srcIndex] == '*') {
					++srcIndex;
				} else if (destP[destIndex] == '-') {
					++destIndex;
					if (srcP[srcIndex] == ' ')
						++srcIndex;
				} else if (srcP[srcIndex] != destP[destIndex]) {
					break;
				} else {
					++destIndex;
					++srcIndex;
				}
			} while (destP[destIndex]);

			if (!destP[destIndex] && (srcP[srcIndex] <= '*' ||
					(srcP[srcIndex] == 's' && srcP[srcIndex + 1] <= '*')))
				return _tags[entry._tagIndex];
		}
	}

	return 0;
}

} // End of namespace Titanic