author | František Kučera <franta-hg@frantovo.cz> |
Sun, 13 Dec 2020 16:47:25 +0100 | |
branch | v_0 |
changeset 7 | bda9d3c83cb7 |
parent 5 | bee7acb57330 |
child 8 | 7c85dc9a310b |
permissions | -rw-r--r-- |
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/** |
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* Relational pipes |
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* Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <string> |
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#include <sstream> |
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#include <regex> |
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#include <relpipe/common/type/typedefs.h> |
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#include <relpipe/reader/RelpipeReaderException.h> |
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#include "uri.h" |
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#include "Dialect.h" |
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#include "EscapingProcessor.h" |
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namespace relpipe { |
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namespace out { |
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namespace ini { |
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class INIWriter { |
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private: |
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std::ostream& output; |
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std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: local system encoding or generate INI always in UTF-8 like XML? |
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std::string keyValueSeparator = " = "; |
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std::string commentSeparatorForSections = " ; "; |
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std::string commentSeparatorForEntries = " ; "; |
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std::string commentSeparatorStandalone = "; "; |
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relpipe::common::type::StringX hierarchySeparator = L"/"; |
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bool allowSections = true; |
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bool hasContent = false; |
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std::vector<relpipe::common::type::StringX> currentSection; |
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relpipe::common::type::StringX getCurrentSectionFullName() { |
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std::wstringstream result; |
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// TODO: configurable hierarchy delimiter |
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// TODO: escape delimiter characters that are part of the section names |
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for (int i = 0; i < currentSection.size(); i++) { |
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if (i > 0)result << hierarchySeparator; |
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result << currentSection[i]; |
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} |
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return result.str(); |
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} |
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/** |
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* TODO: use a common method |
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*/ |
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bool parseBoolean(const relpipe::common::type::StringX& value) { |
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if (value == L"true") return true; |
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else if (value == L"false") return false; |
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else throw relpipe::reader::RelpipeReaderException(L"Unable to parse boolean value: " + value + L" (expecting true or false)"); |
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} |
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EscapingProcessor::QuotingType parseQuotingType(const relpipe::common::type::StringX& value) { |
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if (value == quoting::None) return EscapingProcessor::QuotingType::None; |
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else if (value == quoting::Apostrophes) return EscapingProcessor::QuotingType::Apostrophes; |
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else if (value == quoting::Quotes) return EscapingProcessor::QuotingType::Quotes; |
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else throw relpipe::reader::RelpipeReaderException(L"Unsupported quoting type:" + value); |
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} |
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class QuotingRule { |
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public: |
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EscapingProcessor::QuotingType type = EscapingProcessor::QuotingType::None; |
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relpipe::common::type::StringX pattern; |
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EscapingProcessor::QuotingType findEffectiveQuotingType(const relpipe::common::type::StringX& value) { |
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if (type == EscapingProcessor::QuotingType::None) return type; |
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else if (pattern.empty()) return type; |
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else return std::regex_match(value, std::wregex(pattern)) ? type : EscapingProcessor::QuotingType::None; |
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} |
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}; |
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QuotingRule quotingForSections; |
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QuotingRule quotingForKeys; |
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QuotingRule quotingForValues; |
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std::string escape(const relpipe::common::type::StringX& value, EscapingProcessor::TextType type) { |
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relpipe::common::type::StringX result = value; |
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EscapingProcessor::QuotingType quotingType; |
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if (type == EscapingProcessor::TextType::SectionName || type == EscapingProcessor::TextType::SectionTag) quotingType = quotingForSections.findEffectiveQuotingType(value); |
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else if (type == EscapingProcessor::TextType::EntryKey || type == EscapingProcessor::TextType::EntrySubKey) quotingType = quotingForKeys.findEffectiveQuotingType(value); |
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else if (type == EscapingProcessor::TextType::EntryValue) quotingType = quotingForValues.findEffectiveQuotingType(value); |
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else quotingType = EscapingProcessor::QuotingType::None; |
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for (ConfiguredEscapingProcessor p : escapingProcessors) if (p.enbaled) result = p.processor->escape(result, type, quotingType); |
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if (quotingType == EscapingProcessor::QuotingType::Quotes) result = L"\"" + result + L"\""; |
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else if (quotingType == EscapingProcessor::QuotingType::Apostrophes) result = L"'" + result + L"'"; |
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return convertor.to_bytes(result); |
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} |
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class ConfiguredEscapingProcessor { |
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public: |
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std::shared_ptr<EscapingProcessor> processor; |
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const relpipe::common::type::StringX uri; |
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bool enbaled; |
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ConfiguredEscapingProcessor(std::shared_ptr<EscapingProcessor> processor, const relpipe::common::type::StringX uri, bool enbaled) : processor(processor), uri(uri), enbaled(enbaled) { |
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} |
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}; |
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std::vector<ConfiguredEscapingProcessor> escapingProcessors; |
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bool setEscaping(const relpipe::common::type::StringX& uri, const relpipe::common::type::StringX& value) { |
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for (ConfiguredEscapingProcessor& p : escapingProcessors) { |
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if (p.uri == uri) { |
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p.enbaled = parseBoolean(value); |
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return true; |
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} |
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} |
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return false; |
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} |
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class ConfiguredDialect { |
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public: |
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std::shared_ptr<Dialect> dialect; |
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const relpipe::common::type::StringX uri; |
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140 |
|
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141 |
ConfiguredDialect(std::shared_ptr<Dialect> dialect, const relpipe::common::type::StringX uri) : dialect(dialect), uri(uri) { |
0 | 142 |
} |
143 |
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144 |
}; |
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145 |
|
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146 |
std::vector<ConfiguredDialect> dialects; |
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147 |
|
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148 |
void setDialect(const relpipe::common::type::StringX& uri) { |
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149 |
for (ConfiguredDialect& d : dialects) { |
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if (d.uri == uri) { |
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151 |
d.dialect->apply(*this); |
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152 |
return; |
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153 |
} |
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154 |
} |
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155 |
throw relpipe::reader::RelpipeReaderException(L"Unsupported INI dialect: " + uri); |
0 | 156 |
} |
157 |
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158 |
public: |
|
159 |
||
160 |
class SectionStartEvent { |
|
161 |
public: |
|
162 |
relpipe::common::type::StringX comment; |
|
163 |
relpipe::common::type::StringX name; |
|
164 |
relpipe::common::type::StringX tag; |
|
165 |
}; |
|
166 |
||
167 |
class EntryEvent { |
|
168 |
public: |
|
169 |
relpipe::common::type::StringX comment; |
|
170 |
relpipe::common::type::StringX key; |
|
171 |
relpipe::common::type::StringX subKey; |
|
172 |
relpipe::common::type::StringX value; |
|
173 |
}; |
|
174 |
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175 |
class CommentEvent { |
|
176 |
public: |
|
177 |
relpipe::common::type::StringX comment; |
|
178 |
}; |
|
179 |
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180 |
class WhitespaceEvent { |
|
181 |
public: |
|
182 |
relpipe::common::type::StringX whitespace; |
|
183 |
}; |
|
184 |
||
185 |
INIWriter(std::ostream& output) : output(output) { |
|
186 |
} |
|
187 |
||
188 |
virtual ~INIWriter() { |
|
189 |
}; |
|
190 |
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191 |
void setOption(relpipe::common::type::StringX uri, relpipe::common::type::StringX value) { |
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if (uri == option::Dialect) setDialect(value); |
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else if (uri == option::CommentSeparatorForSections) commentSeparatorForSections = convertor.to_bytes(value); |
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194 |
else if (uri == option::CommentSeparatorForEntries) commentSeparatorForEntries = convertor.to_bytes(value); |
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else if (uri == option::CommentSeparatorStandalone) commentSeparatorStandalone = convertor.to_bytes(value); |
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else if (uri == option::KeyValueSeparator) keyValueSeparator = convertor.to_bytes(value); |
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else if (uri == option::HierarchySeparator) hierarchySeparator = value; |
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198 |
else if (uri == option::AllowSections) allowSections = parseBoolean(value); |
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199 |
else if (uri == option::QuotesTypeForSections) quotingForSections.type = parseQuotingType(value); |
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else if (uri == option::QuotesTypeForKeys) quotingForKeys.type = parseQuotingType(value); |
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else if (uri == option::QuotesTypeForValues) quotingForValues.type = parseQuotingType(value); |
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else if (uri == option::QuotesPatternForSections) quotingForSections.pattern = value; |
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203 |
else if (uri == option::QuotesPatternForKeys) quotingForKeys.pattern = value; |
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204 |
else if (uri == option::QuotesPatternForValues) quotingForValues.pattern = value; |
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205 |
else if (setEscaping(uri, value)); |
0 | 206 |
else throw relpipe::reader::RelpipeReaderException(L"Unsupported writer option: " + uri); |
207 |
} |
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208 |
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209 |
void addDialect(std::shared_ptr<Dialect> dialect, const relpipe::common::type::StringX uri, bool enabledByDefault) { |
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210 |
dialects.push_back({dialect, uri}); |
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211 |
if (enabledByDefault) dialect->apply(*this); |
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212 |
} |
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213 |
|
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214 |
void addEscapingProcessor(std::shared_ptr<EscapingProcessor> processor, const relpipe::common::type::StringX uri, bool enabledByDefault) { |
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215 |
escapingProcessors.push_back({processor, uri, enabledByDefault}); |
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216 |
} |
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217 |
|
0 | 218 |
void startDocument() { |
219 |
} |
|
220 |
||
221 |
void endDocument() { |
|
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222 |
if (currentSection.size()) throw relpipe::reader::RelpipeReaderException(L"There are still " + std::to_wstring(currentSection.size()) + L" open sections during the endDocument() call. Need to call endSection() before."); |
0 | 223 |
output.flush(); |
224 |
} |
|
225 |
||
226 |
void startSection(const SectionStartEvent& event) { |
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227 |
currentSection.push_back(event.name); |
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228 |
|
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229 |
if (allowSections) { |
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230 |
if (hasContent) output << std::endl; |
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231 |
output << "[" << escape(getCurrentSectionFullName(), EscapingProcessor::TextType::SectionName) << "]"; |
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232 |
if (event.tag.size()) output << "[" << escape(event.tag, EscapingProcessor::TextType::SectionTag) << "]"; |
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233 |
if (event.comment.size()) output << commentSeparatorForSections << escape(event.comment, EscapingProcessor::TextType::SectionComment); |
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234 |
output << std::endl; |
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235 |
} |
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|
236 |
|
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237 |
hasContent = true; |
0 | 238 |
} |
239 |
||
240 |
void endSection() { |
|
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|
241 |
currentSection.pop_back(); |
0 | 242 |
output.flush(); |
243 |
} |
|
244 |
||
245 |
void entry(const EntryEvent& event) { |
|
5
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246 |
// TODO: escape/quote parts separately + configurable quoting of parts or whole + the same for sub keys |
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|
247 |
if (!allowSections && currentSection.size()) output << escape(getCurrentSectionFullName(), EscapingProcessor::TextType::EntryKey) << convertor.to_bytes(hierarchySeparator); |
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248 |
output << escape(event.key, EscapingProcessor::TextType::EntryKey); |
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|
249 |
if (event.subKey.size()) output << "[" << escape(event.subKey, EscapingProcessor::TextType::EntrySubKey) << "]"; |
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|
250 |
output << keyValueSeparator << escape(event.value, EscapingProcessor::TextType::EntryValue); |
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|
251 |
if (event.comment.size()) output << commentSeparatorForEntries << escape(event.comment, EscapingProcessor::TextType::EntryComment); |
0 | 252 |
output << std::endl; |
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253 |
hasContent = true; |
0 | 254 |
} |
255 |
||
256 |
void comment(const CommentEvent& event) { |
|
3
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257 |
output << commentSeparatorStandalone << escape(event.comment, EscapingProcessor::TextType::StandaloneComment); |
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258 |
output << std::endl; |
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|
259 |
hasContent = true; |
0 | 260 |
} |
261 |
||
262 |
void whitespace(const WhitespaceEvent& event) { |
|
263 |
for (wchar_t ch : event.whitespace) { |
|
264 |
if (ch == L' ') output << " "; |
|
265 |
else if (ch == L'\t') output << "\t"; |
|
266 |
else if (ch == L'\n') output << "\n"; |
|
267 |
else if (ch == L'\r'); // TODO: keep CR? |
|
268 |
else; // TODO: throw exception if whitespace contains unexpected data? (should not happen) |
|
269 |
} |
|
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270 |
hasContent = true; |
0 | 271 |
} |
272 |
||
273 |
||
274 |
||
275 |
}; |
|
276 |
||
277 |
} |
|
278 |
} |
|
279 |
} |