The Tor Browser / file comparison
comparison: gfx/graphite2/src/json.cpp
gfx/graphite2/src/json.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:7f465d1e3da2 |
|---|---|
| 1 /* GRAPHITE2 LICENSING | |
| 2 | |
| 3 Copyright 2011, SIL International | |
| 4 All rights reserved. | |
| 5 | |
| 6 This library is free software; you can redistribute it and/or modify | |
| 7 it under the terms of the GNU Lesser General Public License as published | |
| 8 by the Free Software Foundation; either version 2.1 of License, or | |
| 9 (at your option) any later version. | |
| 10 | |
| 11 This program is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Lesser General Public License for more details. | |
| 15 | |
| 16 You should also have received a copy of the GNU Lesser General Public | |
| 17 License along with this library in the file named "LICENSE". | |
| 18 If not, write to the Free Software Foundation, 51 Franklin Street, | |
| 19 Suite 500, Boston, MA 02110-1335, USA or visit their web page on the | |
| 20 internet at http://www.fsf.org/licenses/lgpl.html. | |
| 21 | |
| 22 Alternatively, the contents of this file may be used under the terms of the | |
| 23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public | |
| 24 License, as published by the Free Software Foundation, either version 2 | |
| 25 of the License or (at your option) any later version. | |
| 26 */ | |
| 27 // JSON debug logging | |
| 28 // Author: Tim Eves | |
| 29 | |
| 30 #if !defined GRAPHITE2_NTRACING | |
| 31 | |
| 32 #include <stdio.h> | |
| 33 #include "inc/json.h" | |
| 34 | |
| 35 using namespace graphite2; | |
| 36 | |
| 37 namespace | |
| 38 { | |
| 39 enum | |
| 40 { | |
| 41 seq = ',', | |
| 42 obj='}', member=':', empty_obj='{', | |
| 43 arr=']', empty_arr='[' | |
| 44 }; | |
| 45 } | |
| 46 | |
| 47 const json::_null_t json::null = {}; | |
| 48 | |
| 49 inline | |
| 50 void json::context(const char current) throw() | |
| 51 { | |
| 52 fprintf(_stream, "%c", *_context); | |
| 53 indent(); | |
| 54 *_context = current; | |
| 55 } | |
| 56 | |
| 57 | |
| 58 void json::indent(const int d) throw() | |
| 59 { | |
| 60 if (*_context == member || (_flatten && _flatten < _context)) | |
| 61 fputc(' ', _stream); | |
| 62 else | |
| 63 fprintf(_stream, "\n%*s", 4*int(_context - _contexts + d), ""); | |
| 64 } | |
| 65 | |
| 66 | |
| 67 inline | |
| 68 void json::push_context(const char prefix, const char suffix) throw() | |
| 69 { | |
| 70 assert(_context - _contexts < ptrdiff_t(sizeof _contexts)); | |
| 71 | |
| 72 if (_context == _contexts) | |
| 73 *_context = suffix; | |
| 74 else | |
| 75 context(suffix); | |
| 76 *++_context = prefix; | |
| 77 } | |
| 78 | |
| 79 | |
| 80 void json::pop_context() throw() | |
| 81 { | |
| 82 assert(_context > _contexts); | |
| 83 | |
| 84 if (*_context == seq) indent(-1); | |
| 85 else fputc(*_context, _stream); | |
| 86 | |
| 87 fputc(*--_context, _stream); | |
| 88 if (_context == _contexts) fputc('\n', _stream); | |
| 89 fflush(_stream); | |
| 90 | |
| 91 if (_flatten >= _context) _flatten = 0; | |
| 92 *_context = seq; | |
| 93 } | |
| 94 | |
| 95 | |
| 96 // These four functions cannot be inlined as pointers to these | |
| 97 // functions are needed for operator << (_context_t) to work. | |
| 98 void json::flat(json & j) throw() { if (!j._flatten) j._flatten = j._context; } | |
| 99 void json::close(json & j) throw() { j.pop_context(); } | |
| 100 void json::object(json & j) throw() { j.push_context('{', '}'); } | |
| 101 void json::array(json & j) throw() { j.push_context('[', ']'); } | |
| 102 void json::item(json & j) throw() | |
| 103 { | |
| 104 while (j._context > j._contexts+1 && j._context[-1] != arr) | |
| 105 j.pop_context(); | |
| 106 } | |
| 107 | |
| 108 | |
| 109 json & json::operator << (json::string s) throw() | |
| 110 { | |
| 111 const char ctxt = _context[-1] == obj ? *_context == member ? seq : member : seq; | |
| 112 context(ctxt); | |
| 113 fprintf(_stream, "\"%s\"", s); | |
| 114 if (ctxt == member) fputc(' ', _stream); | |
| 115 | |
| 116 return *this; | |
| 117 } | |
| 118 | |
| 119 json & json::operator << (json::number f) throw() { context(seq); fprintf(_stream, "%g", f); return *this; } | |
| 120 json & json::operator << (json::integer d) throw() { context(seq); fprintf(_stream, "%ld", d); return *this; } | |
| 121 json & json::operator << (long unsigned d) throw() { context(seq); fprintf(_stream, "%ld", d); return *this; } | |
| 122 json & json::operator << (json::boolean b) throw() { context(seq); fputs(b ? "true" : "false", _stream); return *this; } | |
| 123 json & json::operator << (json::_null_t) throw() { context(seq); fputs("null",_stream); return *this; } | |
| 124 | |
| 125 #endif | |
| 126 |
