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-rw-r--r--lib/jsoncpp/src/lib_json/json_writer.cpp829
1 files changed, 829 insertions, 0 deletions
diff --git a/lib/jsoncpp/src/lib_json/json_writer.cpp b/lib/jsoncpp/src/lib_json/json_writer.cpp
new file mode 100644
index 000000000..cdf4188f2
--- /dev/null
+++ b/lib/jsoncpp/src/lib_json/json_writer.cpp
@@ -0,0 +1,829 @@
+#include <json/writer.h>
+#include <utility>
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+
+#if _MSC_VER >= 1400 // VC++ 8.0
+#pragma warning( disable : 4996 ) // disable warning about strdup being deprecated.
+#endif
+
+namespace Json {
+
+static bool isControlCharacter(char ch)
+{
+ return ch > 0 && ch <= 0x1F;
+}
+
+static bool containsControlCharacter( const char* str )
+{
+ while ( *str )
+ {
+ if ( isControlCharacter( *(str++) ) )
+ return true;
+ }
+ return false;
+}
+static void uintToString( unsigned int value,
+ char *&current )
+{
+ *--current = 0;
+ do
+ {
+ *--current = (value % 10) + '0';
+ value /= 10;
+ }
+ while ( value != 0 );
+}
+
+std::string valueToString( Int value )
+{
+ char buffer[32];
+ char *current = buffer + sizeof(buffer);
+ bool isNegative = value < 0;
+ if ( isNegative )
+ value = -value;
+ uintToString( UInt(value), current );
+ if ( isNegative )
+ *--current = '-';
+ assert( current >= buffer );
+ return current;
+}
+
+
+std::string valueToString( UInt value )
+{
+ char buffer[32];
+ char *current = buffer + sizeof(buffer);
+ uintToString( value, current );
+ assert( current >= buffer );
+ return current;
+}
+
+std::string valueToString( double value )
+{
+ char buffer[32];
+#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__) // Use secure version with visual studio 2005 to avoid warning.
+ sprintf_s(buffer, sizeof(buffer), "%#.16g", value);
+#else
+ sprintf(buffer, "%#.16g", value);
+#endif
+ char* ch = buffer + strlen(buffer) - 1;
+ if (*ch != '0') return buffer; // nothing to truncate, so save time
+ while(ch > buffer && *ch == '0'){
+ --ch;
+ }
+ char* last_nonzero = ch;
+ while(ch >= buffer){
+ switch(*ch){
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ --ch;
+ continue;
+ case '.':
+ // Truncate zeroes to save bytes in output, but keep one.
+ *(last_nonzero+2) = '\0';
+ return buffer;
+ default:
+ return buffer;
+ }
+ }
+ return buffer;
+}
+
+
+std::string valueToString( bool value )
+{
+ return value ? "true" : "false";
+}
+
+std::string valueToQuotedString( const char *value )
+{
+ // Not sure how to handle unicode...
+ if (strpbrk(value, "\"\\\b\f\n\r\t") == NULL && !containsControlCharacter( value ))
+ 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.)
+ unsigned maxsize = strlen(value)*2 + 3; // allescaped+quotes+NULL
+ std::string result;
+ result.reserve(maxsize); // to avoid lots of mallocs
+ result += "\"";
+ for (const char* c=value; *c != 0; ++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 ) )
+ {
+ 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()
+{
+}
+
+
+// Class FastWriter
+// //////////////////////////////////////////////////////////////////
+
+FastWriter::FastWriter()
+ : yamlCompatiblityEnabled_( false )
+{
+}
+
+
+void
+FastWriter::enableYAMLCompatibility()
+{
+ yamlCompatiblityEnabled_ = true;
+}
+
+
+std::string
+FastWriter::write( const Value &root )
+{
+ document_ = "";
+ writeValue( root );
+ document_ += "\n";
+ return document_;
+}
+
+
+void
+FastWriter::writeValue( const Value &value )
+{
+ switch ( value.type() )
+ {
+ case nullValue:
+ document_ += "null";
+ break;
+ case intValue:
+ document_ += valueToString( value.asInt() );
+ break;
+ case uintValue:
+ document_ += valueToString( value.asUInt() );
+ break;
+ case realValue:
+ document_ += valueToString( value.asDouble() );
+ break;
+ case stringValue:
+ document_ += valueToQuotedString( value.asCString() );
+ break;
+ case booleanValue:
+ document_ += valueToString( value.asBool() );
+ break;
+ case arrayValue:
+ {
+ document_ += "[";
+ int size = value.size();
+ for ( int index =0; index < size; ++index )
+ {
+ if ( index > 0 )
+ document_ += ",";
+ writeValue( value[index] );
+ }
+ document_ += "]";
+ }
+ break;
+ case objectValue:
+ {
+ Value::Members members( value.getMemberNames() );
+ document_ += "{";
+ for ( Value::Members::iterator it = members.begin();
+ it != members.end();
+ ++it )
+ {
+ const std::string &name = *it;
+ if ( it != members.begin() )
+ document_ += ",";
+ document_ += valueToQuotedString( name.c_str() );
+ document_ += yamlCompatiblityEnabled_ ? ": "
+ : ":";
+ writeValue( value[name] );
+ }
+ document_ += "}";
+ }
+ break;
+ }
+}
+
+
+// Class StyledWriter
+// //////////////////////////////////////////////////////////////////
+
+StyledWriter::StyledWriter()
+ : rightMargin_( 74 )
+ , indentSize_( 3 )
+{
+}
+
+
+std::string
+StyledWriter::write( const Value &root )
+{
+ document_ = "";
+ addChildValues_ = false;
+ indentString_ = "";
+ writeCommentBeforeValue( root );
+ writeValue( root );
+ writeCommentAfterValueOnSameLine( root );
+ document_ += "\n";
+ return document_;
+}
+
+
+void
+StyledWriter::writeValue( const Value &value )
+{
+ switch ( value.type() )
+ {
+ case nullValue:
+ pushValue( "null" );
+ break;
+ case intValue:
+ pushValue( valueToString( value.asInt() ) );
+ break;
+ case uintValue:
+ pushValue( valueToString( value.asUInt() ) );
+ break;
+ case realValue:
+ pushValue( valueToString( value.asDouble() ) );
+ break;
+ case stringValue:
+ pushValue( valueToQuotedString( value.asCString() ) );
+ 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();
+ while ( true )
+ {
+ const std::string &name = *it;
+ const Value &childValue = value[name];
+ writeCommentBeforeValue( childValue );
+ writeWithIndent( valueToQuotedString( name.c_str() ) );
+ document_ += " : ";
+ writeValue( childValue );
+ if ( ++it == members.end() )
+ {
+ writeCommentAfterValueOnSameLine( childValue );
+ break;
+ }
+ document_ += ",";
+ writeCommentAfterValueOnSameLine( childValue );
+ }
+ unindent();
+ writeWithIndent( "}" );
+ }
+ }
+ break;
+ }
+}
+
+
+void
+StyledWriter::writeArrayValue( const Value &value )
+{
+ unsigned size = value.size();
+ if ( size == 0 )
+ pushValue( "[]" );
+ else
+ {
+ bool isArrayMultiLine = isMultineArray( value );
+ if ( isArrayMultiLine )
+ {
+ writeWithIndent( "[" );
+ indent();
+ bool hasChildValue = !childValues_.empty();
+ unsigned index =0;
+ while ( true )
+ {
+ const Value &childValue = value[index];
+ writeCommentBeforeValue( childValue );
+ if ( hasChildValue )
+ writeWithIndent( childValues_[index] );
+ else
+ {
+ writeIndent();
+ writeValue( childValue );
+ }
+ if ( ++index == size )
+ {
+ writeCommentAfterValueOnSameLine( childValue );
+ break;
+ }
+ document_ += ",";
+ writeCommentAfterValueOnSameLine( childValue );
+ }
+ unindent();
+ writeWithIndent( "]" );
+ }
+ else // output on a single line
+ {
+ assert( childValues_.size() == size );
+ document_ += "[ ";
+ for ( unsigned index =0; index < size; ++index )
+ {
+ if ( index > 0 )
+ document_ += ", ";
+ document_ += childValues_[index];
+ }
+ document_ += " ]";
+ }
+ }
+}
+
+
+bool
+StyledWriter::isMultineArray( const Value &value )
+{
+ int size = value.size();
+ bool isMultiLine = size*3 >= rightMargin_ ;
+ childValues_.clear();
+ for ( int index =0; index < size && !isMultiLine; ++index )
+ {
+ const Value &childValue = value[index];
+ isMultiLine = isMultiLine ||
+ ( (childValue.isArray() || childValue.isObject()) &&
+ childValue.size() > 0 );
+ }
+ 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 && !isMultiLine; ++index )
+ {
+ writeValue( value[index] );
+ lineLength += int( childValues_[index].length() );
+ isMultiLine = isMultiLine && hasCommentForValue( value[index] );
+ }
+ addChildValues_ = false;
+ isMultiLine = isMultiLine || lineLength >= rightMargin_;
+ }
+ return isMultiLine;
+}
+
+
+void
+StyledWriter::pushValue( const std::string &value )
+{
+ if ( addChildValues_ )
+ childValues_.push_back( value );
+ else
+ document_ += value;
+}
+
+
+void
+StyledWriter::writeIndent()
+{
+ if ( !document_.empty() )
+ {
+ char last = document_[document_.length()-1];
+ if ( last == ' ' ) // already indented
+ return;
+ if ( last != '\n' ) // Comments may add new-line
+ document_ += '\n';
+ }
+ document_ += indentString_;
+}
+
+
+void
+StyledWriter::writeWithIndent( const std::string &value )
+{
+ writeIndent();
+ document_ += value;
+}
+
+
+void
+StyledWriter::indent()
+{
+ indentString_ += std::string( indentSize_, ' ' );
+}
+
+
+void
+StyledWriter::unindent()
+{
+ assert( int(indentString_.size()) >= indentSize_ );
+ indentString_.resize( indentString_.size() - indentSize_ );
+}
+
+
+void
+StyledWriter::writeCommentBeforeValue( const Value &root )
+{
+ if ( !root.hasComment( commentBefore ) )
+ return;
+ document_ += normalizeEOL( root.getComment( commentBefore ) );
+ document_ += "\n";
+}
+
+
+void
+StyledWriter::writeCommentAfterValueOnSameLine( const Value &root )
+{
+ if ( root.hasComment( commentAfterOnSameLine ) )
+ document_ += " " + normalizeEOL( root.getComment( commentAfterOnSameLine ) );
+
+ if ( root.hasComment( commentAfter ) )
+ {
+ document_ += "\n";
+ document_ += normalizeEOL( root.getComment( commentAfter ) );
+ document_ += "\n";
+ }
+}
+
+
+bool
+StyledWriter::hasCommentForValue( const Value &value )
+{
+ return value.hasComment( commentBefore )
+ || value.hasComment( commentAfterOnSameLine )
+ || 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
+// //////////////////////////////////////////////////////////////////
+
+StyledStreamWriter::StyledStreamWriter( std::string indentation )
+ : document_(NULL)
+ , rightMargin_( 74 )
+ , indentation_( indentation )
+{
+}
+
+
+void
+StyledStreamWriter::write( std::ostream &out, const Value &root )
+{
+ document_ = &out;
+ addChildValues_ = false;
+ indentString_ = "";
+ writeCommentBeforeValue( root );
+ writeValue( root );
+ writeCommentAfterValueOnSameLine( root );
+ *document_ << "\n";
+ document_ = NULL; // Forget the stream, for safety.
+}
+
+
+void
+StyledStreamWriter::writeValue( const Value &value )
+{
+ switch ( value.type() )
+ {
+ case nullValue:
+ pushValue( "null" );
+ break;
+ case intValue:
+ pushValue( valueToString( value.asInt() ) );
+ break;
+ case uintValue:
+ pushValue( valueToString( value.asUInt() ) );
+ break;
+ case realValue:
+ pushValue( valueToString( value.asDouble() ) );
+ break;
+ case stringValue:
+ pushValue( valueToQuotedString( value.asCString() ) );
+ 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();
+ while ( true )
+ {
+ const std::string &name = *it;
+ const Value &childValue = value[name];
+ writeCommentBeforeValue( childValue );
+ writeWithIndent( valueToQuotedString( name.c_str() ) );
+ *document_ << " : ";
+ writeValue( childValue );
+ if ( ++it == members.end() )
+ {
+ writeCommentAfterValueOnSameLine( childValue );
+ break;
+ }
+ *document_ << ",";
+ writeCommentAfterValueOnSameLine( childValue );
+ }
+ unindent();
+ writeWithIndent( "}" );
+ }
+ }
+ break;
+ }
+}
+
+
+void
+StyledStreamWriter::writeArrayValue( const Value &value )
+{
+ unsigned size = value.size();
+ if ( size == 0 )
+ pushValue( "[]" );
+ else
+ {
+ bool isArrayMultiLine = isMultineArray( value );
+ if ( isArrayMultiLine )
+ {
+ writeWithIndent( "[" );
+ indent();
+ bool hasChildValue = !childValues_.empty();
+ unsigned index =0;
+ while ( true )
+ {
+ const Value &childValue = value[index];
+ writeCommentBeforeValue( childValue );
+ if ( hasChildValue )
+ writeWithIndent( childValues_[index] );
+ else
+ {
+ writeIndent();
+ writeValue( childValue );
+ }
+ if ( ++index == size )
+ {
+ writeCommentAfterValueOnSameLine( childValue );
+ break;
+ }
+ *document_ << ",";
+ writeCommentAfterValueOnSameLine( childValue );
+ }
+ unindent();
+ writeWithIndent( "]" );
+ }
+ else // output on a single line
+ {
+ assert( childValues_.size() == size );
+ *document_ << "[ ";
+ for ( unsigned index =0; index < size; ++index )
+ {
+ if ( index > 0 )
+ *document_ << ", ";
+ *document_ << childValues_[index];
+ }
+ *document_ << " ]";
+ }
+ }
+}
+
+
+bool
+StyledStreamWriter::isMultineArray( const Value &value )
+{
+ int size = value.size();
+ bool isMultiLine = size*3 >= rightMargin_ ;
+ childValues_.clear();
+ for ( int index =0; index < size && !isMultiLine; ++index )
+ {
+ const Value &childValue = value[index];
+ isMultiLine = isMultiLine ||
+ ( (childValue.isArray() || childValue.isObject()) &&
+ childValue.size() > 0 );
+ }
+ 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 && !isMultiLine; ++index )
+ {
+ writeValue( value[index] );
+ lineLength += int( childValues_[index].length() );
+ isMultiLine = isMultiLine && hasCommentForValue( value[index] );
+ }
+ addChildValues_ = false;
+ isMultiLine = isMultiLine || lineLength >= rightMargin_;
+ }
+ return isMultiLine;
+}
+
+
+void
+StyledStreamWriter::pushValue( const std::string &value )
+{
+ if ( addChildValues_ )
+ childValues_.push_back( value );
+ else
+ *document_ << 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';
+ }
+ */
+ *document_ << '\n' << indentString_;
+}
+
+
+void
+StyledStreamWriter::writeWithIndent( const std::string &value )
+{
+ writeIndent();
+ *document_ << value;
+}
+
+
+void
+StyledStreamWriter::indent()
+{
+ indentString_ += indentation_;
+}
+
+
+void
+StyledStreamWriter::unindent()
+{
+ assert( indentString_.size() >= indentation_.size() );
+ indentString_.resize( indentString_.size() - indentation_.size() );
+}
+
+
+void
+StyledStreamWriter::writeCommentBeforeValue( const Value &root )
+{
+ if ( !root.hasComment( commentBefore ) )
+ return;
+ *document_ << normalizeEOL( root.getComment( commentBefore ) );
+ *document_ << "\n";
+}
+
+
+void
+StyledStreamWriter::writeCommentAfterValueOnSameLine( const Value &root )
+{
+ if ( root.hasComment( commentAfterOnSameLine ) )
+ *document_ << " " + normalizeEOL( root.getComment( commentAfterOnSameLine ) );
+
+ if ( root.hasComment( commentAfter ) )
+ {
+ *document_ << "\n";
+ *document_ << normalizeEOL( root.getComment( commentAfter ) );
+ *document_ << "\n";
+ }
+}
+
+
+bool
+StyledStreamWriter::hasCommentForValue( const Value &value )
+{
+ return value.hasComment( commentBefore )
+ || value.hasComment( commentAfterOnSameLine )
+ || 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
+ {
+ if ( *current == '\n' ) // convert dos EOL
+ ++current;
+ normalized += '\n';
+ }
+ else // handle unix EOL & other char
+ normalized += c;
+ }
+ return normalized;
+}
+
+
+std::ostream& operator<<( std::ostream &sout, const Value &root )
+{
+ Json::StyledStreamWriter writer;
+ writer.write(sout, root);
+ return sout;
+}
+
+
+} // namespace Json
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