1 /*
2 SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org>
3
4 SPDX-License-Identifier: LGPL-2.0-or-later
5 */
6
7 #include "mapcssparser.h"
8 #include "logging.h"
9
10 #include "mapcssparser_p.h"
11 #include "mapcssrule_p.h"
12 #include "mapcssscanner.h"
13 #include "mapcssstyle.h"
14 #include "mapcssstyle_p.h"
15
16 #include <QDebug>
17 #include <QFile>
18 #include <QFileInfo>
19 #include <QScopeGuard>
20
21 #include <cstring>
22
unquoteString(const char * str)23 char* unquoteString(const char *str)
24 {
25 const auto size = strlen(str) - 2;
26 if (size <= 0)
27 return nullptr;
28 auto out = (char*)malloc(size + 1);
29 memset(out, 0, size + 1);
30 auto outIt = out;
31 for (auto it = str + 1; it < str + size + 1; ++it, ++outIt) {
32 if (*it == '\\') {
33 ++it;
34 switch (*it) {
35 case '\\':
36 case '"':
37 *outIt = *it; break;
38 case 'n':
39 *outIt = '\n'; break;
40 case 't':
41 *outIt = '\t'; break;
42 default:
43 *outIt++ = '\\';
44 *outIt = *it;
45 }
46 } else {
47 *outIt = *it;
48 }
49 }
50 return out;
51 }
52
53 using namespace KOSMIndoorMap;
54
hasError() const55 bool MapCSSParser::hasError() const
56 {
57 return m_error;
58 }
59
fileName() const60 QString MapCSSParser::fileName() const
61 {
62 return m_currentFileName;
63 }
64
errorMessage() const65 QString MapCSSParser::errorMessage() const
66 {
67 if (!m_error) {
68 return {};
69 }
70
71 return m_errorMsg + QLatin1String(": ") + fileName() + QLatin1Char(':') + QString::number(m_line) + QLatin1Char(':') + QString::number(m_column);
72 }
73
parse(const QString & fileName)74 MapCSSStyle MapCSSParser::parse(const QString &fileName)
75 {
76 m_error = true;
77
78 MapCSSStyle style;
79 parse(&style, fileName);
80 if (m_error) {
81 return MapCSSStyle();
82 }
83
84 return style;
85 }
86
parse(MapCSSStyle * style,const QString & fileName)87 void MapCSSParser::parse(MapCSSStyle *style, const QString &fileName)
88 {
89 QFile f(fileName);
90 if (!f.open(QFile::ReadOnly)) {
91 qCWarning(Log) << f.fileName() << f.errorString();
92 m_error = true;
93 m_errorMsg = f.errorString();
94 return;
95 }
96 m_currentFileName = fileName;
97 m_currentStyle = style;
98
99 yyscan_t scanner;
100 if (yylex_init(&scanner)) {
101 return;
102 }
103 const auto lexerCleanup = qScopeGuard([&scanner]{ yylex_destroy(scanner); });
104
105 const auto b = f.readAll();
106 YY_BUFFER_STATE state;
107 state = yy_scan_string(b.constData(), scanner);
108 if (yyparse(this, scanner)) {
109 m_error = true;
110 return;
111 }
112
113 yy_delete_buffer(state, scanner);
114
115 m_error = false;
116 m_currentStyle = nullptr;
117 }
118
addImport(char * fileName)119 bool MapCSSParser::addImport(char* fileName)
120 {
121 auto cssFile = QString::fromUtf8(fileName);
122 free(fileName);
123
124 if (QFileInfo(cssFile).isRelative()) {
125 cssFile = QFileInfo(m_currentFileName).absolutePath() + QLatin1Char('/') + cssFile;
126 }
127
128 MapCSSParser p;
129 p.parse(m_currentStyle, cssFile);
130 if (p.hasError()) {
131 m_error = p.m_error;
132 m_errorMsg = p.errorMessage();
133 }
134 return !p.hasError();
135 }
136
addRule(MapCSSRule * rule)137 void MapCSSParser::addRule(MapCSSRule *rule)
138 {
139 MapCSSStylePrivate::get(m_currentStyle)->m_rules.push_back(std::unique_ptr<MapCSSRule>(rule));
140 }
141
setError(const QString & msg,int line,int column)142 void MapCSSParser::setError(const QString &msg, int line, int column)
143 {
144 m_error = true;
145 m_errorMsg = msg;
146 m_line = line;
147 m_column = column;
148 }
149
makeClassSelector(const char * str,std::size_t len)150 ClassSelectorKey MapCSSParser::makeClassSelector(const char *str, std::size_t len)
151 {
152 return MapCSSStylePrivate::get(m_currentStyle)->m_classSelectorRegistry.makeKey(str, len, OSM::StringMemory::Transient);
153 }
154
makeLayerSelector(const char * str,std::size_t len)155 LayerSelectorKey MapCSSParser::makeLayerSelector(const char *str, std::size_t len)
156 {
157 if (!str || std::strcmp(str, "default") == 0) {
158 return {};
159 }
160 return MapCSSStylePrivate::get(m_currentStyle)->m_layerSelectorRegistry.makeKey(str, len, OSM::StringMemory::Transient);
161 }
162