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-rwxr-xr-xsrc/rapidjson/writer.h241
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diff --git a/src/rapidjson/writer.h b/src/rapidjson/writer.h
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+#ifndef RAPIDJSON_WRITER_H_
+#define RAPIDJSON_WRITER_H_
+
+#include "rapidjson.h"
+#include "internal/stack.h"
+#include "internal/strfunc.h"
+#include <cstdio> // snprintf() or _sprintf_s()
+#include <new> // placement new
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4127) // conditional expression is constant
+#endif
+
+namespace rapidjson {
+
+//! JSON writer
+/*! Writer implements the concept Handler.
+ It generates JSON text by events to an output stream.
+
+ User may programmatically calls the functions of a writer to generate JSON text.
+
+ On the other side, a writer can also be passed to objects that generates events,
+
+ for example Reader::Parse() and Document::Accept().
+
+ \tparam Stream Type of ouptut stream.
+ \tparam Encoding Encoding of both source strings and output.
+ \implements Handler
+*/
+template<typename Stream, typename Encoding = UTF8<>, typename Allocator = MemoryPoolAllocator<> >
+class Writer {
+public:
+ typedef typename Encoding::Ch Ch;
+
+ Writer(Stream& stream, Allocator* allocator = 0, size_t levelDepth = kDefaultLevelDepth) :
+ stream_(stream), level_stack_(allocator, levelDepth * sizeof(Level)) {}
+
+ //@name Implementation of Handler
+ //@{
+ Writer& Null() { Prefix(kNullType); WriteNull(); return *this; }
+ Writer& Bool(bool b) { Prefix(b ? kTrueType : kFalseType); WriteBool(b); return *this; }
+ Writer& Int(int i) { Prefix(kNumberType); WriteInt(i); return *this; }
+ Writer& Uint(unsigned u) { Prefix(kNumberType); WriteUint(u); return *this; }
+ Writer& Int64(int64_t i64) { Prefix(kNumberType); WriteInt64(i64); return *this; }
+ Writer& Uint64(uint64_t u64) { Prefix(kNumberType); WriteUint64(u64); return *this; }
+ Writer& Double(double d) { Prefix(kNumberType); WriteDouble(d); return *this; }
+
+ Writer& String(const Ch* str, SizeType length, bool copy = false) {
+ (void)copy;
+ Prefix(kStringType);
+ WriteString(str, length);
+ return *this;
+ }
+
+ Writer& StartObject() {
+ Prefix(kObjectType);
+ new (level_stack_.template Push<Level>()) Level(false);
+ WriteStartObject();
+ return *this;
+ }
+
+ Writer& EndObject(SizeType memberCount = 0) {
+ (void)memberCount;
+ RAPIDJSON_ASSERT(level_stack_.GetSize() >= sizeof(Level));
+ RAPIDJSON_ASSERT(!level_stack_.template Top<Level>()->inArray);
+ level_stack_.template Pop<Level>(1);
+ WriteEndObject();
+ return *this;
+ }
+
+ Writer& StartArray() {
+ Prefix(kArrayType);
+ new (level_stack_.template Push<Level>()) Level(true);
+ WriteStartArray();
+ return *this;
+ }
+
+ Writer& EndArray(SizeType elementCount = 0) {
+ (void)elementCount;
+ RAPIDJSON_ASSERT(level_stack_.GetSize() >= sizeof(Level));
+ RAPIDJSON_ASSERT(level_stack_.template Top<Level>()->inArray);
+ level_stack_.template Pop<Level>(1);
+ WriteEndArray();
+ return *this;
+ }
+ //@}
+
+ //! Simpler but slower overload.
+ Writer& String(const Ch* str) { return String(str, internal::StrLen(str)); }
+
+protected:
+ //! Information for each nested level
+ struct Level {
+ Level(bool inArray_) : inArray(inArray_), valueCount(0) {}
+ bool inArray; //!< true if in array, otherwise in object
+ size_t valueCount; //!< number of values in this level
+ };
+
+ static const size_t kDefaultLevelDepth = 32;
+
+ void WriteNull() {
+ stream_.Put('n'); stream_.Put('u'); stream_.Put('l'); stream_.Put('l');
+ }
+
+ void WriteBool(bool b) {
+ if (b) {
+ stream_.Put('t'); stream_.Put('r'); stream_.Put('u'); stream_.Put('e');
+ }
+ else {
+ stream_.Put('f'); stream_.Put('a'); stream_.Put('l'); stream_.Put('s'); stream_.Put('e');
+ }
+ }
+
+ void WriteInt(int i) {
+ if (i < 0) {
+ stream_.Put('-');
+ i = -i;
+ }
+ WriteUint((unsigned)i);
+ }
+
+ void WriteUint(unsigned u) {
+ char buffer[10];
+ char *p = buffer;
+ do {
+ *p++ = (u % 10) + '0';
+ u /= 10;
+ } while (u > 0);
+
+ do {
+ --p;
+ stream_.Put(*p);
+ } while (p != buffer);
+ }
+
+ void WriteInt64(int64_t i64) {
+ if (i64 < 0) {
+ stream_.Put('-');
+ i64 = -i64;
+ }
+ WriteUint64((uint64_t)i64);
+ }
+
+ void WriteUint64(uint64_t u64) {
+ char buffer[20];
+ char *p = buffer;
+ do {
+ *p++ = char(u64 % 10) + '0';
+ u64 /= 10;
+ } while (u64 > 0);
+
+ do {
+ --p;
+ stream_.Put(*p);
+ } while (p != buffer);
+ }
+
+ //! \todo Optimization with custom double-to-string converter.
+ void WriteDouble(double d) {
+ char buffer[100];
+#if _MSC_VER
+ int ret = sprintf_s(buffer, sizeof(buffer), "%g", d);
+#else
+ int ret = snprintf(buffer, sizeof(buffer), "%g", d);
+#endif
+ RAPIDJSON_ASSERT(ret >= 1);
+ for (int i = 0; i < ret; i++)
+ stream_.Put(buffer[i]);
+ }
+
+ void WriteString(const Ch* str, SizeType length) {
+ static const char hexDigits[] = "0123456789ABCDEF";
+ static const char escape[256] = {
+#define Z16 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+ //0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'b', 't', 'n', 'u', 'f', 'r', 'u', 'u', // 00
+ 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 10
+ 0, 0, '"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20
+ Z16, Z16, // 30~4F
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'\\', 0, 0, 0, // 50
+ Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16 // 60~FF
+#undef Z16
+ };
+
+ stream_.Put('\"');
+ for (const Ch* p = str; p != str + length; ++p) {
+ if ((sizeof(Ch) == 1 || *p < 256) && escape[(unsigned char)*p]) {
+ stream_.Put('\\');
+ stream_.Put(escape[(unsigned char)*p]);
+ if (escape[(unsigned char)*p] == 'u') {
+ stream_.Put('0');
+ stream_.Put('0');
+ stream_.Put(hexDigits[(*p) >> 4]);
+ stream_.Put(hexDigits[(*p) & 0xF]);
+ }
+ }
+ else
+ stream_.Put(*p);
+ }
+ stream_.Put('\"');
+ }
+
+ void WriteStartObject() { stream_.Put('{'); }
+ void WriteEndObject() { stream_.Put('}'); }
+ void WriteStartArray() { stream_.Put('['); }
+ void WriteEndArray() { stream_.Put(']'); }
+
+ void Prefix(Type type) {
+ (void)type;
+ if (level_stack_.GetSize() != 0) { // this value is not at root
+ Level* level = level_stack_.template Top<Level>();
+ if (level->valueCount > 0) {
+ if (level->inArray)
+ stream_.Put(','); // add comma if it is not the first element in array
+ else // in object
+ stream_.Put((level->valueCount % 2 == 0) ? ',' : ':');
+ }
+ if (!level->inArray && level->valueCount % 2 == 0)
+ RAPIDJSON_ASSERT(type == kStringType); // if it's in object, then even number should be a name
+ level->valueCount++;
+ }
+ else
+ RAPIDJSON_ASSERT(type == kObjectType || type == kArrayType);
+ }
+
+ Stream& stream_;
+ internal::Stack<Allocator> level_stack_;
+
+private:
+ // Prohibit assignment for VC C4512 warning
+ Writer& operator=(const Writer& w);
+};
+
+} // namespace rapidjson
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+#endif // RAPIDJSON_RAPIDJSON_H_
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