/Users/deen/code/yugabyte-db/src/yb/rocksdb/third-party/fbson/FbsonUtil.h

Source (jump to first uncovered line)
/*
 *  Copyright (c) 2011-present, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 *
 * The following only applies to changes made to this file as part of YugaByte development.
 *
 * Portions Copyright (c) YugaByte, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied.  See the License for the specific language governing permissions and limitations
 * under the License.
 *
 *
 */

/*
 * This header file defines miscellaneous utility classes.
 *
 * @author Tian Xia <tianx@fb.com>
 */

#ifndef FBSON_FBSONUTIL_H
#define FBSON_FBSONUTIL_H

#include <sstream>
#include "FbsonDocument.h"

namespace fbson {

#define OUT_BUF_SIZE 1024

/*
 * FbsonToJson converts an FbsonValue object to a JSON string.
 */
class FbsonToJson {
 public:
  FbsonToJson() : os_(buffer_, OUT_BUF_SIZE) {}

  // get json string
  const char* json(const FbsonValue* pval) {
    os_.clear();
    os_.seekp(0);

    if (pval) {
      intern_json(pval);
    }

    os_.put(0);
    return os_.getBuffer();
  }

 private:
  // recursively convert FbsonValue
  void intern_json(const FbsonValue* val) {
    switch (val->type()) {
    case FbsonType::T_Null: {
      os_.write("null", 4);
      break;
    }
    case FbsonType::T_True: {
      os_.write("true", 4);
      break;
    }
    case FbsonType::T_False: {
      os_.write("false", 5);
      break;
    }
    case FbsonType::T_Int8: {
      os_.write(((Int8Val*)val)->val());
      break;
    }
    case FbsonType::T_Int16: {
      os_.write(((Int16Val*)val)->val());
      break;
    }
    case FbsonType::T_Int32: {
      os_.write(((Int32Val*)val)->val());
      break;
    }
    case FbsonType::T_Int64: {
      os_.write(((Int64Val*)val)->val());
      break;
    }
    case FbsonType::T_Double: {
      os_.write(((DoubleVal*)val)->val());
      break;
    }
    case FbsonType::T_String: {
      os_.put('"');
      os_.write(((StringVal*)val)->getBlob(), ((StringVal*)val)->getBlobLen());
      os_.put('"');
      break;
    }
    case FbsonType::T_Binary: {
      os_.write("\"<BINARY>", 9);
      os_.write(((BinaryVal*)val)->getBlob(), ((BinaryVal*)val)->getBlobLen());
      os_.write("<BINARY>\"", 9);
      break;
    }
    case FbsonType::T_Object: {
      object_to_json((ObjectVal*)val);
      break;
    }
    case FbsonType::T_Array: {
      array_to_json((ArrayVal*)val);
      break;
    }
    default:
      break;
    }
  }

  // convert object
  void object_to_json(const ObjectVal* val) {
    os_.put('{');

    auto iter = val->begin();
    auto iter_fence = val->end();

    while (iter < iter_fence) {
      // write key
      if (iter->klen()) {
        os_.put('"');
        os_.write(iter->getKeyStr(), iter->klen());
        os_.put('"');
      } else {
        os_.write(iter->getKeyId());
      }
      os_.put(':');

      // convert value
      intern_json(iter->value());

      ++iter;
      if (iter != iter_fence) {
        os_.put(',');
      }
    }

    assert(iter == iter_fence);

    os_.put('}');
  }

  // convert array to json
  void array_to_json(const ArrayVal* val) {
    os_.put('[');

    auto iter = val->begin();
    auto iter_fence = val->end();

    while (iter != iter_fence) {
      // convert value
      intern_json((const FbsonValue*)iter);
      ++iter;
      if (iter != iter_fence) {
        os_.put(',');
      }
    }

    assert(iter == iter_fence);

    os_.put(']');
  }

 private:
  FbsonOutStream os_;
  char buffer_[OUT_BUF_SIZE];
};

} // namespace fbson

#endif // FBSON_FBSONUTIL_H

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright (c) 2011-present, Facebook, Inc.
3		* All rights reserved.
4		*
5		* This source code is licensed under the BSD-style license found in the
6		* LICENSE file in the root directory of this source tree. An additional grant
7		* of patent rights can be found in the PATENTS file in the same directory.
8		*
9		* The following only applies to changes made to this file as part of YugaByte development.
10		*
11		* Portions Copyright (c) YugaByte, Inc.
12		*
13		* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
14		* in compliance with the License. You may obtain a copy of the License at
15		*
16		* http://www.apache.org/licenses/LICENSE-2.0
17		*
18		* Unless required by applicable law or agreed to in writing, software distributed under the License
19		* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
20		* or implied. See the License for the specific language governing permissions and limitations
21		* under the License.
22		*
23		*
24		*/
25
26		/*
27		* This header file defines miscellaneous utility classes.
28		*
29		* @author Tian Xia <tianx@fb.com>
30		*/
31
32		#ifndef FBSON_FBSONUTIL_H
33		#define FBSON_FBSONUTIL_H
34
35		#include <sstream>
36		#include "FbsonDocument.h"
37
38		namespace fbson {
39
40		#define OUT_BUF_SIZE 1024
41
42		/*
43		* FbsonToJson converts an FbsonValue object to a JSON string.
44		*/
45		class FbsonToJson {
46		public:
47	0	FbsonToJson() : os_(buffer_, OUT_BUF_SIZE) {}
48
49		// get json string
50	0	const char* json(const FbsonValue* pval) {
51	0	os_.clear();
52	0	os_.seekp(0);
53
54	0	if (pval) {
55	0	intern_json(pval);
56	0	}
57
58	0	os_.put(0);
59	0	return os_.getBuffer();
60	0	}
61
62		private:
63		// recursively convert FbsonValue
64	0	void intern_json(const FbsonValue* val) {
65	0	switch (val->type()) {
66	0	case FbsonType::T_Null: {
67	0	os_.write("null", 4);
68	0	break;
69	0	}
70	0	case FbsonType::T_True: {
71	0	os_.write("true", 4);
72	0	break;
73	0	}
74	0	case FbsonType::T_False: {
75	0	os_.write("false", 5);
76	0	break;
77	0	}
78	0	case FbsonType::T_Int8: {
79	0	os_.write(((Int8Val*)val)->val());
80	0	break;
81	0	}
82	0	case FbsonType::T_Int16: {
83	0	os_.write(((Int16Val*)val)->val());
84	0	break;
85	0	}
86	0	case FbsonType::T_Int32: {
87	0	os_.write(((Int32Val*)val)->val());
88	0	break;
89	0	}
90	0	case FbsonType::T_Int64: {
91	0	os_.write(((Int64Val*)val)->val());
92	0	break;
93	0	}
94	0	case FbsonType::T_Double: {
95	0	os_.write(((DoubleVal*)val)->val());
96	0	break;
97	0	}
98	0	case FbsonType::T_String: {
99	0	os_.put('"');
100	0	os_.write(((StringVal)val)->getBlob(), ((StringVal)val)->getBlobLen());
101	0	os_.put('"');
102	0	break;
103	0	}
104	0	case FbsonType::T_Binary: {
105	0	os_.write("\"<BINARY>", 9);
106	0	os_.write(((BinaryVal)val)->getBlob(), ((BinaryVal)val)->getBlobLen());
107	0	os_.write("<BINARY>\"", 9);
108	0	break;
109	0	}
110	0	case FbsonType::T_Object: {
111	0	object_to_json((ObjectVal*)val);
112	0	break;
113	0	}
114	0	case FbsonType::T_Array: {
115	0	array_to_json((ArrayVal*)val);
116	0	break;
117	0	}
118	0	default:
119	0	break;
120	0	}
121	0	}
122
123		// convert object
124	0	void object_to_json(const ObjectVal* val) {
125	0	os_.put('{');
126
127	0	auto iter = val->begin();
128	0	auto iter_fence = val->end();
129
130	0	while (iter < iter_fence) {
131		// write key
132	0	if (iter->klen()) {
133	0	os_.put('"');
134	0	os_.write(iter->getKeyStr(), iter->klen());
135	0	os_.put('"');
136	0	} else {
137	0	os_.write(iter->getKeyId());
138	0	}
139	0	os_.put(':');
140
141		// convert value
142	0	intern_json(iter->value());
143
144	0	++iter;
145	0	if (iter != iter_fence) {
146	0	os_.put(',');
147	0	}
148	0	}
149
150	0	assert(iter == iter_fence);
151
152	0	os_.put('}');
153	0	}
154
155		// convert array to json
156	0	void array_to_json(const ArrayVal* val) {
157	0	os_.put('[');
158
159	0	auto iter = val->begin();
160	0	auto iter_fence = val->end();
161
162	0	while (iter != iter_fence) {
163		// convert value
164	0	intern_json((const FbsonValue*)iter);
165	0	++iter;
166	0	if (iter != iter_fence) {
167	0	os_.put(',');
168	0	}
169	0	}
170
171	0	assert(iter == iter_fence);
172
173	0	os_.put(']');
174	0	}
175
176		private:
177		FbsonOutStream os_;
178		char buffer_[OUT_BUF_SIZE];
179		};
180
181		} // namespace fbson
182
183		#endif // FBSON_FBSONUTIL_H

YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

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Created: 2022-03-09 17:30