diff options
Diffstat (limited to '3rdparty/jsoncpp/src/lib_json/json_writer.cpp')
-rw-r--r-- | 3rdparty/jsoncpp/src/lib_json/json_writer.cpp | 642 |
1 files changed, 563 insertions, 79 deletions
diff --git a/3rdparty/jsoncpp/src/lib_json/json_writer.cpp b/3rdparty/jsoncpp/src/lib_json/json_writer.cpp index 5113c38be1d..2f940c8a43f 100644 --- a/3rdparty/jsoncpp/src/lib_json/json_writer.cpp +++ b/3rdparty/jsoncpp/src/lib_json/json_writer.cpp @@ -7,15 +7,35 @@ #include <json/writer.h> #include "json_tool.h" #endif // if !defined(JSON_IS_AMALGAMATION) -#include <utility> -#include <assert.h> -#include <stdio.h> -#include <string.h> -#include <sstream> #include <iomanip> -#include <math.h> +#include <memory> +#include <sstream> +#include <utility> +#include <set> +#include <cassert> +#include <cstring> +#include <cstdio> + +#if defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1800 // Between VC++ 6.0 and VC++ 11.0 +#include <float.h> +#define isfinite _finite +#elif defined(__sun) && defined(__SVR4) //Solaris +#include <ieeefp.h> +#define isfinite finite +#else +#include <cmath> +#define isfinite std::isfinite +#endif #if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below +#define snprintf _snprintf +#elif defined(__ANDROID__) +#define snprintf snprintf +#elif __cplusplus >= 201103L +#define snprintf std::snprintf +#endif + +#if defined(__BORLANDC__) #include <float.h> #define isfinite _finite #define snprintf _snprintf @@ -26,13 +46,14 @@ #pragma warning(disable : 4996) #endif -#if defined(__sun) && defined(__SVR4) //Solaris -#include <ieeefp.h> -#define isfinite finite -#endif - namespace Json { +#if __cplusplus >= 201103L +typedef std::unique_ptr<StreamWriter> StreamWriterPtr; +#else +typedef std::auto_ptr<StreamWriter> StreamWriterPtr; +#endif + static bool containsControlCharacter(const char* str) { while (*str) { if (isControlCharacter(*(str++))) @@ -41,6 +62,16 @@ static bool containsControlCharacter(const char* str) { return false; } +static bool containsControlCharacter0(const char* str, unsigned len) { + char const* end = str + len; + while (end != str) { + if (isControlCharacter(*str) || 0==*str) + return true; + ++str; + } + return false; +} + std::string valueToString(LargestInt value) { UIntToStringBuffer buffer; char* current = buffer + sizeof(buffer); @@ -175,6 +206,84 @@ std::string valueToQuotedString(const char* value) { return result; } +// https://github.com/upcaste/upcaste/blob/master/src/upcore/src/cstring/strnpbrk.cpp +static char const* strnpbrk(char const* s, char const* accept, size_t n) { + assert((s || !n) && accept); + + char const* const end = s + n; + for (char const* cur = s; cur < end; ++cur) { + int const c = *cur; + for (char const* a = accept; *a; ++a) { + if (*a == c) { + return cur; + } + } + } + return NULL; +} +static std::string valueToQuotedStringN(const char* value, unsigned length) { + if (value == NULL) + return ""; + // Not sure how to handle unicode... + if (strnpbrk(value, "\"\\\b\f\n\r\t", length) == NULL && + !containsControlCharacter0(value, length)) + return std::string("\"") + value + "\""; + // We have to walk value and escape any special characters. + // Appending to std::string is not efficient, but this should be rare. + // (Note: forward slashes are *not* rare, but I am not escaping them.) + std::string::size_type maxsize = + length * 2 + 3; // allescaped+quotes+NULL + std::string result; + result.reserve(maxsize); // to avoid lots of mallocs + result += "\""; + char const* end = value + length; + for (const char* c = value; c != end; ++c) { + switch (*c) { + case '\"': + result += "\\\""; + break; + case '\\': + result += "\\\\"; + break; + case '\b': + result += "\\b"; + break; + case '\f': + result += "\\f"; + break; + case '\n': + result += "\\n"; + break; + case '\r': + result += "\\r"; + break; + case '\t': + result += "\\t"; + break; + // case '/': + // Even though \/ is considered a legal escape in JSON, a bare + // slash is also legal, so I see no reason to escape it. + // (I hope I am not misunderstanding something.) + // blep notes: actually escaping \/ may be useful in javascript to avoid </ + // sequence. + // Should add a flag to allow this compatibility mode and prevent this + // sequence from occurring. + default: + if ((isControlCharacter(*c)) || (*c == 0)) { + std::ostringstream oss; + oss << "\\u" << std::hex << std::uppercase << std::setfill('0') + << std::setw(4) << static_cast<int>(*c); + result += oss.str(); + } else { + result += *c; + } + break; + } + } + result += "\""; + return result; +} + // Class Writer // ////////////////////////////////////////////////////////////////// Writer::~Writer() {} @@ -216,8 +325,14 @@ void FastWriter::writeValue(const Value& value) { document_ += valueToString(value.asDouble()); break; case stringValue: - document_ += valueToQuotedString(value.asCString()); + { + // Is NULL possible for value.string_? + char const* str; + char const* end; + bool ok = value.getString(&str, &end); + if (ok) document_ += valueToQuotedStringN(str, static_cast<unsigned>(end-str)); break; + } case booleanValue: document_ += valueToString(value.asBool()); break; @@ -239,7 +354,7 @@ void FastWriter::writeValue(const Value& value) { const std::string& name = *it; if (it != members.begin()) document_ += ','; - document_ += valueToQuotedString(name.c_str()); + document_ += valueToQuotedStringN(name.data(), static_cast<unsigned>(name.length())); document_ += yamlCompatiblityEnabled_ ? ": " : ":"; writeValue(value[name]); } @@ -280,8 +395,15 @@ void StyledWriter::writeValue(const Value& value) { pushValue(valueToString(value.asDouble())); break; case stringValue: - pushValue(valueToQuotedString(value.asCString())); + { + // Is NULL possible for value.string_? + char const* str; + char const* end; + bool ok = value.getString(&str, &end); + if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str))); + else pushValue(""); break; + } case booleanValue: pushValue(valueToString(value.asBool())); break; @@ -376,6 +498,9 @@ bool StyledWriter::isMultineArray(const Value& value) { addChildValues_ = true; int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]' for (int index = 0; index < size; ++index) { + if (hasCommentForValue(value[index])) { + isMultiLine = true; + } writeValue(value[index]); lineLength += int(childValues_[index].length()); } @@ -421,26 +546,27 @@ void StyledWriter::writeCommentBeforeValue(const Value& root) { document_ += "\n"; writeIndent(); - std::string normalizedComment = normalizeEOL(root.getComment(commentBefore)); - std::string::const_iterator iter = normalizedComment.begin(); - while (iter != normalizedComment.end()) { + const std::string& comment = root.getComment(commentBefore); + std::string::const_iterator iter = comment.begin(); + while (iter != comment.end()) { document_ += *iter; - if (*iter == '\n' && *(iter + 1) == '/') + if (*iter == '\n' && + (iter != comment.end() && *(iter + 1) == '/')) writeIndent(); ++iter; } - // Comments are stripped of newlines, so add one here + // Comments are stripped of trailing newlines, so add one here document_ += "\n"; } void StyledWriter::writeCommentAfterValueOnSameLine(const Value& root) { if (root.hasComment(commentAfterOnSameLine)) - document_ += " " + normalizeEOL(root.getComment(commentAfterOnSameLine)); + document_ += " " + root.getComment(commentAfterOnSameLine); if (root.hasComment(commentAfter)) { document_ += "\n"; - document_ += normalizeEOL(root.getComment(commentAfter)); + document_ += root.getComment(commentAfter); document_ += "\n"; } } @@ -451,25 +577,6 @@ bool StyledWriter::hasCommentForValue(const Value& value) { value.hasComment(commentAfter); } -std::string StyledWriter::normalizeEOL(const std::string& text) { - std::string normalized; - normalized.reserve(text.length()); - const char* begin = text.c_str(); - const char* end = begin + text.length(); - const char* current = begin; - while (current != end) { - char c = *current++; - if (c == '\r') // mac or dos EOL - { - if (*current == '\n') // convert dos EOL - ++current; - normalized += '\n'; - } else // handle unix EOL & other char - normalized += c; - } - return normalized; -} - // Class StyledStreamWriter // ////////////////////////////////////////////////////////////////// @@ -481,7 +588,10 @@ void StyledStreamWriter::write(std::ostream& out, const Value& root) { document_ = &out; addChildValues_ = false; indentString_ = ""; + indented_ = true; writeCommentBeforeValue(root); + if (!indented_) writeIndent(); + indented_ = true; writeValue(root); writeCommentAfterValueOnSameLine(root); *document_ << "\n"; @@ -503,8 +613,15 @@ void StyledStreamWriter::writeValue(const Value& value) { pushValue(valueToString(value.asDouble())); break; case stringValue: - pushValue(valueToQuotedString(value.asCString())); + { + // Is NULL possible for value.string_? + char const* str; + char const* end; + bool ok = value.getString(&str, &end); + if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str))); + else pushValue(""); break; + } case booleanValue: pushValue(valueToString(value.asBool())); break; @@ -557,8 +674,10 @@ void StyledStreamWriter::writeArrayValue(const Value& value) { if (hasChildValue) writeWithIndent(childValues_[index]); else { - writeIndent(); + if (!indented_) writeIndent(); + indented_ = true; writeValue(childValue); + indented_ = false; } if (++index == size) { writeCommentAfterValueOnSameLine(childValue); @@ -599,6 +718,9 @@ bool StyledStreamWriter::isMultineArray(const Value& value) { addChildValues_ = true; int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]' for (int index = 0; index < size; ++index) { + if (hasCommentForValue(value[index])) { + isMultiLine = true; + } writeValue(value[index]); lineLength += int(childValues_[index].length()); } @@ -616,24 +738,17 @@ void StyledStreamWriter::pushValue(const std::string& value) { } void StyledStreamWriter::writeIndent() { - /* - Some comments in this method would have been nice. ;-) - - if ( !document_.empty() ) - { - char last = document_[document_.length()-1]; - if ( last == ' ' ) // already indented - return; - if ( last != '\n' ) // Comments may add new-line - *document_ << '\n'; - } - */ + // blep intended this to look at the so-far-written string + // to determine whether we are already indented, but + // with a stream we cannot do that. So we rely on some saved state. + // The caller checks indented_. *document_ << '\n' << indentString_; } void StyledStreamWriter::writeWithIndent(const std::string& value) { - writeIndent(); + if (!indented_) writeIndent(); *document_ << value; + indented_ = false; } void StyledStreamWriter::indent() { indentString_ += indentation_; } @@ -646,19 +761,30 @@ void StyledStreamWriter::unindent() { void StyledStreamWriter::writeCommentBeforeValue(const Value& root) { if (!root.hasComment(commentBefore)) return; - *document_ << normalizeEOL(root.getComment(commentBefore)); - *document_ << "\n"; + + if (!indented_) writeIndent(); + const std::string& comment = root.getComment(commentBefore); + std::string::const_iterator iter = comment.begin(); + while (iter != comment.end()) { + *document_ << *iter; + if (*iter == '\n' && + (iter != comment.end() && *(iter + 1) == '/')) + // writeIndent(); // would include newline + *document_ << indentString_; + ++iter; + } + indented_ = false; } void StyledStreamWriter::writeCommentAfterValueOnSameLine(const Value& root) { if (root.hasComment(commentAfterOnSameLine)) - *document_ << " " + normalizeEOL(root.getComment(commentAfterOnSameLine)); + *document_ << ' ' << root.getComment(commentAfterOnSameLine); if (root.hasComment(commentAfter)) { - *document_ << "\n"; - *document_ << normalizeEOL(root.getComment(commentAfter)); - *document_ << "\n"; + writeIndent(); + *document_ << root.getComment(commentAfter); } + indented_ = false; } bool StyledStreamWriter::hasCommentForValue(const Value& value) { @@ -667,28 +793,386 @@ bool StyledStreamWriter::hasCommentForValue(const Value& value) { value.hasComment(commentAfter); } -std::string StyledStreamWriter::normalizeEOL(const std::string& text) { - std::string normalized; - normalized.reserve(text.length()); - const char* begin = text.c_str(); - const char* end = begin + text.length(); - const char* current = begin; - while (current != end) { - char c = *current++; - if (c == '\r') // mac or dos EOL +////////////////////////// +// BuiltStyledStreamWriter + +/// Scoped enums are not available until C++11. +struct CommentStyle { + /// Decide whether to write comments. + enum Enum { + None, ///< Drop all comments. + Most, ///< Recover odd behavior of previous versions (not implemented yet). + All ///< Keep all comments. + }; +}; + +struct BuiltStyledStreamWriter : public StreamWriter +{ + BuiltStyledStreamWriter( + std::string const& indentation, + CommentStyle::Enum cs, + std::string const& colonSymbol, + std::string const& nullSymbol, + std::string const& endingLineFeedSymbol); + virtual int write(Value const& root, std::ostream* sout); +private: + void writeValue(Value const& value); + void writeArrayValue(Value const& value); + bool isMultineArray(Value const& value); + void pushValue(std::string const& value); + void writeIndent(); + void writeWithIndent(std::string const& value); + void indent(); + void unindent(); + void writeCommentBeforeValue(Value const& root); + void writeCommentAfterValueOnSameLine(Value const& root); + static bool hasCommentForValue(const Value& value); + + typedef std::vector<std::string> ChildValues; + + ChildValues childValues_; + std::string indentString_; + int rightMargin_; + std::string indentation_; + CommentStyle::Enum cs_; + std::string colonSymbol_; + std::string nullSymbol_; + std::string endingLineFeedSymbol_; + bool addChildValues_ : 1; + bool indented_ : 1; +}; +BuiltStyledStreamWriter::BuiltStyledStreamWriter( + std::string const& indentation, + CommentStyle::Enum cs, + std::string const& colonSymbol, + std::string const& nullSymbol, + std::string const& endingLineFeedSymbol) + : rightMargin_(74) + , indentation_(indentation) + , cs_(cs) + , colonSymbol_(colonSymbol) + , nullSymbol_(nullSymbol) + , endingLineFeedSymbol_(endingLineFeedSymbol) + , addChildValues_(false) + , indented_(false) +{ +} +int BuiltStyledStreamWriter::write(Value const& root, std::ostream* sout) +{ + sout_ = sout; + addChildValues_ = false; + indented_ = true; + indentString_ = ""; + writeCommentBeforeValue(root); + if (!indented_) writeIndent(); + indented_ = true; + writeValue(root); + writeCommentAfterValueOnSameLine(root); + *sout_ << endingLineFeedSymbol_; + sout_ = NULL; + return 0; +} +void BuiltStyledStreamWriter::writeValue(Value const& value) { + switch (value.type()) { + case nullValue: + pushValue(nullSymbol_); + break; + case intValue: + pushValue(valueToString(value.asLargestInt())); + break; + case uintValue: + pushValue(valueToString(value.asLargestUInt())); + break; + case realValue: + pushValue(valueToString(value.asDouble())); + break; + case stringValue: + { + // Is NULL is possible for value.string_? + char const* str; + char const* end; + bool ok = value.getString(&str, &end); + if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str))); + else pushValue(""); + break; + } + case booleanValue: + pushValue(valueToString(value.asBool())); + break; + case arrayValue: + writeArrayValue(value); + break; + case objectValue: { + Value::Members members(value.getMemberNames()); + if (members.empty()) + pushValue("{}"); + else { + writeWithIndent("{"); + indent(); + Value::Members::iterator it = members.begin(); + for (;;) { + std::string const& name = *it; + Value const& childValue = value[name]; + writeCommentBeforeValue(childValue); + writeWithIndent(valueToQuotedStringN(name.data(), static_cast<unsigned>(name.length()))); + *sout_ << colonSymbol_; + writeValue(childValue); + if (++it == members.end()) { + writeCommentAfterValueOnSameLine(childValue); + break; + } + *sout_ << ","; + writeCommentAfterValueOnSameLine(childValue); + } + unindent(); + writeWithIndent("}"); + } + } break; + } +} + +void BuiltStyledStreamWriter::writeArrayValue(Value const& value) { + unsigned size = value.size(); + if (size == 0) + pushValue("[]"); + else { + bool isMultiLine = (cs_ == CommentStyle::All) || isMultineArray(value); + if (isMultiLine) { + writeWithIndent("["); + indent(); + bool hasChildValue = !childValues_.empty(); + unsigned index = 0; + for (;;) { + Value const& childValue = value[index]; + writeCommentBeforeValue(childValue); + if (hasChildValue) + writeWithIndent(childValues_[index]); + else { + if (!indented_) writeIndent(); + indented_ = true; + writeValue(childValue); + indented_ = false; + } + if (++index == size) { + writeCommentAfterValueOnSameLine(childValue); + break; + } + *sout_ << ","; + writeCommentAfterValueOnSameLine(childValue); + } + unindent(); + writeWithIndent("]"); + } else // output on a single line { - if (*current == '\n') // convert dos EOL - ++current; - normalized += '\n'; - } else // handle unix EOL & other char - normalized += c; + assert(childValues_.size() == size); + *sout_ << "["; + if (!indentation_.empty()) *sout_ << " "; + for (unsigned index = 0; index < size; ++index) { + if (index > 0) + *sout_ << ", "; + *sout_ << childValues_[index]; + } + if (!indentation_.empty()) *sout_ << " "; + *sout_ << "]"; + } + } +} + +bool BuiltStyledStreamWriter::isMultineArray(Value const& value) { + int size = value.size(); + bool isMultiLine = size * 3 >= rightMargin_; + childValues_.clear(); + for (int index = 0; index < size && !isMultiLine; ++index) { + Value const& childValue = value[index]; + isMultiLine = + isMultiLine || ((childValue.isArray() || childValue.isObject()) && + childValue.size() > 0); } - return normalized; + if (!isMultiLine) // check if line length > max line length + { + childValues_.reserve(size); + addChildValues_ = true; + int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]' + for (int index = 0; index < size; ++index) { + if (hasCommentForValue(value[index])) { + isMultiLine = true; + } + writeValue(value[index]); + lineLength += int(childValues_[index].length()); + } + addChildValues_ = false; + isMultiLine = isMultiLine || lineLength >= rightMargin_; + } + return isMultiLine; +} + +void BuiltStyledStreamWriter::pushValue(std::string const& value) { + if (addChildValues_) + childValues_.push_back(value); + else + *sout_ << value; +} + +void BuiltStyledStreamWriter::writeIndent() { + // blep intended this to look at the so-far-written string + // to determine whether we are already indented, but + // with a stream we cannot do that. So we rely on some saved state. + // The caller checks indented_. + + if (!indentation_.empty()) { + // In this case, drop newlines too. + *sout_ << '\n' << indentString_; + } +} + +void BuiltStyledStreamWriter::writeWithIndent(std::string const& value) { + if (!indented_) writeIndent(); + *sout_ << value; + indented_ = false; +} + +void BuiltStyledStreamWriter::indent() { indentString_ += indentation_; } + +void BuiltStyledStreamWriter::unindent() { + assert(indentString_.size() >= indentation_.size()); + indentString_.resize(indentString_.size() - indentation_.size()); +} + +void BuiltStyledStreamWriter::writeCommentBeforeValue(Value const& root) { + if (cs_ == CommentStyle::None) return; + if (!root.hasComment(commentBefore)) + return; + + if (!indented_) writeIndent(); + const std::string& comment = root.getComment(commentBefore); + std::string::const_iterator iter = comment.begin(); + while (iter != comment.end()) { + *sout_ << *iter; + if (*iter == '\n' && + (iter != comment.end() && *(iter + 1) == '/')) + // writeIndent(); // would write extra newline + *sout_ << indentString_; + ++iter; + } + indented_ = false; +} + +void BuiltStyledStreamWriter::writeCommentAfterValueOnSameLine(Value const& root) { + if (cs_ == CommentStyle::None) return; + if (root.hasComment(commentAfterOnSameLine)) + *sout_ << " " + root.getComment(commentAfterOnSameLine); + + if (root.hasComment(commentAfter)) { + writeIndent(); + *sout_ << root.getComment(commentAfter); + } +} + +// static +bool BuiltStyledStreamWriter::hasCommentForValue(const Value& value) { + return value.hasComment(commentBefore) || + value.hasComment(commentAfterOnSameLine) || + value.hasComment(commentAfter); +} + +/////////////// +// StreamWriter + +StreamWriter::StreamWriter() + : sout_(NULL) +{ +} +StreamWriter::~StreamWriter() +{ +} +StreamWriter::Factory::~Factory() +{} +StreamWriterBuilder::StreamWriterBuilder() +{ + setDefaults(&settings_); +} +StreamWriterBuilder::~StreamWriterBuilder() +{} +StreamWriter* StreamWriterBuilder::newStreamWriter() const +{ + std::string indentation = settings_["indentation"].asString(); + std::string cs_str = settings_["commentStyle"].asString(); + bool eyc = settings_["enableYAMLCompatibility"].asBool(); + bool dnp = settings_["dropNullPlaceholders"].asBool(); + CommentStyle::Enum cs = CommentStyle::All; + if (cs_str == "All") { + cs = CommentStyle::All; + } else if (cs_str == "None") { + cs = CommentStyle::None; + } else { + throwRuntimeError("commentStyle must be 'All' or 'None'"); + } + std::string colonSymbol = " : "; + if (eyc) { + colonSymbol = ": "; + } else if (indentation.empty()) { + colonSymbol = ":"; + } + std::string nullSymbol = "null"; + if (dnp) { + nullSymbol = ""; + } + std::string endingLineFeedSymbol = ""; + return new BuiltStyledStreamWriter( + indentation, cs, + colonSymbol, nullSymbol, endingLineFeedSymbol); +} +static void getValidWriterKeys(std::set<std::string>* valid_keys) +{ + valid_keys->clear(); + valid_keys->insert("indentation"); + valid_keys->insert("commentStyle"); + valid_keys->insert("enableYAMLCompatibility"); + valid_keys->insert("dropNullPlaceholders"); +} +bool StreamWriterBuilder::validate(Json::Value* invalid) const +{ + Json::Value my_invalid; + if (!invalid) invalid = &my_invalid; // so we do not need to test for NULL + Json::Value& inv = *invalid; + std::set<std::string> valid_keys; + getValidWriterKeys(&valid_keys); + Value::Members keys = settings_.getMemberNames(); + size_t n = keys.size(); + for (size_t i = 0; i < n; ++i) { + std::string const& key = keys[i]; + if (valid_keys.find(key) == valid_keys.end()) { + inv[key] = settings_[key]; + } + } + return 0u == inv.size(); +} +Value& StreamWriterBuilder::operator[](std::string key) +{ + return settings_[key]; +} +// static +void StreamWriterBuilder::setDefaults(Json::Value* settings) +{ + //! [StreamWriterBuilderDefaults] + (*settings)["commentStyle"] = "All"; + (*settings)["indentation"] = "\t"; + (*settings)["enableYAMLCompatibility"] = false; + (*settings)["dropNullPlaceholders"] = false; + //! [StreamWriterBuilderDefaults] +} + +std::string writeString(StreamWriter::Factory const& builder, Value const& root) { + std::ostringstream sout; + StreamWriterPtr const writer(builder.newStreamWriter()); + writer->write(root, &sout); + return sout.str(); } -std::ostream& operator<<(std::ostream& sout, const Value& root) { - Json::StyledStreamWriter writer; - writer.write(sout, root); +std::ostream& operator<<(std::ostream& sout, Value const& root) { + StreamWriterBuilder builder; + StreamWriterPtr const writer(builder.newStreamWriter()); + writer->write(root, &sout); return sout; } |