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Diffstat (limited to 'src/common/rapidjson/prettywriter.h')
| -rw-r--r-- | src/common/rapidjson/prettywriter.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/common/rapidjson/prettywriter.h b/src/common/rapidjson/prettywriter.h new file mode 100644 index 000000000..4eac8d76f --- /dev/null +++ b/src/common/rapidjson/prettywriter.h @@ -0,0 +1,205 @@ +// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef RAPIDJSON_PRETTYWRITER_H_
+#define RAPIDJSON_PRETTYWRITER_H_
+
+#include "writer.h"
+
+#ifdef __GNUC__
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(effc++)
+#endif
+
+namespace rapidjson {
+
+//! Writer with indentation and spacing.
+/*!
+ \tparam OutputStream Type of ouptut os.
+ \tparam SourceEncoding Encoding of source string.
+ \tparam TargetEncoding Encoding of output stream.
+ \tparam StackAllocator Type of allocator for allocating memory of stack.
+*/
+template<typename OutputStream, typename SourceEncoding = UTF8<>, typename TargetEncoding = UTF8<>, typename StackAllocator = CrtAllocator>
+class PrettyWriter : public Writer<OutputStream, SourceEncoding, TargetEncoding, StackAllocator> {
+public:
+ typedef Writer<OutputStream, SourceEncoding, TargetEncoding, StackAllocator> Base;
+ typedef typename Base::Ch Ch;
+
+ //! Constructor
+ /*! \param os Output stream.
+ \param allocator User supplied allocator. If it is null, it will create a private one.
+ \param levelDepth Initial capacity of stack.
+ */
+ PrettyWriter(OutputStream& os, StackAllocator* allocator = 0, size_t levelDepth = Base::kDefaultLevelDepth) :
+ Base(os, allocator, levelDepth), indentChar_(' '), indentCharCount_(4) {}
+
+ //! Set custom indentation.
+ /*! \param indentChar Character for indentation. Must be whitespace character (' ', '\\t', '\\n', '\\r').
+ \param indentCharCount Number of indent characters for each indentation level.
+ \note The default indentation is 4 spaces.
+ */
+ PrettyWriter& SetIndent(Ch indentChar, unsigned indentCharCount) {
+ RAPIDJSON_ASSERT(indentChar == ' ' || indentChar == '\t' || indentChar == '\n' || indentChar == '\r');
+ indentChar_ = indentChar;
+ indentCharCount_ = indentCharCount;
+ return *this;
+ }
+
+ /*! @name Implementation of Handler
+ \see Handler
+ */
+ //@{
+
+ bool Null() { PrettyPrefix(kNullType); return Base::WriteNull(); }
+ bool Bool(bool b) { PrettyPrefix(b ? kTrueType : kFalseType); return Base::WriteBool(b); }
+ bool Int(int i) { PrettyPrefix(kNumberType); return Base::WriteInt(i); }
+ bool Uint(unsigned u) { PrettyPrefix(kNumberType); return Base::WriteUint(u); }
+ bool Int64(int64_t i64) { PrettyPrefix(kNumberType); return Base::WriteInt64(i64); }
+ bool Uint64(uint64_t u64) { PrettyPrefix(kNumberType); return Base::WriteUint64(u64); }
+ bool Double(double d) { PrettyPrefix(kNumberType); return Base::WriteDouble(d); }
+
+ bool String(const Ch* str, SizeType length, bool copy = false) {
+ (void)copy;
+ PrettyPrefix(kStringType);
+ return Base::WriteString(str, length);
+ }
+
+ bool StartObject() {
+ PrettyPrefix(kObjectType);
+ new (Base::level_stack_.template Push<typename Base::Level>()) typename Base::Level(false);
+ return Base::WriteStartObject();
+ }
+
+ bool Key(const Ch* str, SizeType length, bool copy = false) { return String(str, length, copy); }
+
+ bool EndObject(SizeType memberCount = 0) {
+ (void)memberCount;
+ RAPIDJSON_ASSERT(Base::level_stack_.GetSize() >= sizeof(typename Base::Level));
+ RAPIDJSON_ASSERT(!Base::level_stack_.template Top<typename Base::Level>()->inArray);
+ bool empty = Base::level_stack_.template Pop<typename Base::Level>(1)->valueCount == 0;
+
+ if (!empty) {
+ Base::os_->Put('\n');
+ WriteIndent();
+ }
+ if (!Base::WriteEndObject())
+ return false;
+ if (Base::level_stack_.Empty()) // end of json text
+ Base::os_->Flush();
+ return true;
+ }
+
+ bool StartArray() {
+ PrettyPrefix(kArrayType);
+ new (Base::level_stack_.template Push<typename Base::Level>()) typename Base::Level(true);
+ return Base::WriteStartArray();
+ }
+
+ bool EndArray(SizeType memberCount = 0) {
+ (void)memberCount;
+ RAPIDJSON_ASSERT(Base::level_stack_.GetSize() >= sizeof(typename Base::Level));
+ RAPIDJSON_ASSERT(Base::level_stack_.template Top<typename Base::Level>()->inArray);
+ bool empty = Base::level_stack_.template Pop<typename Base::Level>(1)->valueCount == 0;
+
+ if (!empty) {
+ Base::os_->Put('\n');
+ WriteIndent();
+ }
+ if (!Base::WriteEndArray())
+ return false;
+ if (Base::level_stack_.Empty()) // end of json text
+ Base::os_->Flush();
+ return true;
+ }
+
+ //@}
+
+ /*! @name Convenience extensions */
+ //@{
+
+ //! Simpler but slower overload.
+ bool String(const Ch* str) { return String(str, internal::StrLen(str)); }
+ bool Key(const Ch* str) { return Key(str, internal::StrLen(str)); }
+
+ //@}
+protected:
+ void PrettyPrefix(Type type) {
+ (void)type;
+ if (Base::level_stack_.GetSize() != 0) { // this value is not at root
+ typename Base::Level* level = Base::level_stack_.template Top<typename Base::Level>();
+
+ if (level->inArray) {
+ if (level->valueCount > 0) {
+ Base::os_->Put(','); // add comma if it is not the first element in array
+ Base::os_->Put('\n');
+ }
+ else
+ Base::os_->Put('\n');
+ WriteIndent();
+ }
+ else { // in object
+ if (level->valueCount > 0) {
+ if (level->valueCount % 2 == 0) {
+ Base::os_->Put(',');
+ Base::os_->Put('\n');
+ }
+ else {
+ Base::os_->Put(':');
+ Base::os_->Put(' ');
+ }
+ }
+ else
+ Base::os_->Put('\n');
+
+ if (level->valueCount % 2 == 0)
+ WriteIndent();
+ }
+ 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(!Base::hasRoot_); // Should only has one and only one root.
+ Base::hasRoot_ = true;
+ }
+ }
+
+ void WriteIndent() {
+ size_t count = (Base::level_stack_.GetSize() / sizeof(typename Base::Level)) * indentCharCount_;
+ PutN(*Base::os_, indentChar_, count);
+ }
+
+ Ch indentChar_;
+ unsigned indentCharCount_;
+
+private:
+ // Prohibit copy constructor & assignment operator.
+ PrettyWriter(const PrettyWriter&);
+ PrettyWriter& operator=(const PrettyWriter&);
+};
+
+} // namespace rapidjson
+
+#ifdef __GNUC__
+RAPIDJSON_DIAG_POP
+#endif
+
+#endif // RAPIDJSON_RAPIDJSON_H_
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