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author | Peter Breitenlohner <peb@mppmu.mpg.de> | 2015-08-05 08:59:06 +0000 |
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committer | Peter Breitenlohner <peb@mppmu.mpg.de> | 2015-08-05 08:59:06 +0000 |
commit | a80f9f3d6b0a845c322d040fd3adb13b2ff41db7 (patch) | |
tree | af860685b7061063716e6a18bd2d5acfa8839ea0 /Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp | |
parent | cf732e3b1fcc0534a2c400e057231efc3c4a2ece (diff) |
graphite2 1.3.0
git-svn-id: svn://tug.org/texlive/trunk@38046 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp')
-rw-r--r-- | Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp b/Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp new file mode 100644 index 00000000000..d6e5518a1c3 --- /dev/null +++ b/Build/source/libs/graphite2/graphite2-1.3.0/src/json.cpp @@ -0,0 +1,140 @@ +/* GRAPHITE2 LICENSING + + Copyright 2011, SIL International + All rights reserved. + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should also have received a copy of the GNU Lesser General Public + License along with this library in the file named "LICENSE". + If not, write to the Free Software Foundation, 51 Franklin Street, + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the + internet at http://www.fsf.org/licenses/lgpl.html. + +Alternatively, the contents of this file may be used under the terms of the +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public +License, as published by the Free Software Foundation, either version 2 +of the License or (at your option) any later version. +*/ +// JSON debug logging +// Author: Tim Eves + +#if !defined GRAPHITE2_NTRACING + +#include <cstdio> +#include <limits> +#include "inc/json.h" + +using namespace graphite2; + +namespace +{ + enum + { + seq = ',', + obj='}', member=':', empty_obj='{', + arr=']', empty_arr='[' + }; +} + +const json::_null_t json::null = {}; + +inline +void json::context(const char current) throw() +{ + fprintf(_stream, "%c", *_context); + indent(); + *_context = current; +} + + +void json::indent(const int d) throw() +{ + if (*_context == member || (_flatten && _flatten < _context)) + fputc(' ', _stream); + else + fprintf(_stream, "\n%*s", 4*int(_context - _contexts + d), ""); +} + + +inline +void json::push_context(const char prefix, const char suffix) throw() +{ + assert(_context - _contexts < ptrdiff_t(sizeof _contexts)); + + if (_context == _contexts) + *_context = suffix; + else + context(suffix); + *++_context = prefix; +} + + +void json::pop_context() throw() +{ + assert(_context > _contexts); + + if (*_context == seq) indent(-1); + else fputc(*_context, _stream); + + fputc(*--_context, _stream); + if (_context == _contexts) fputc('\n', _stream); + fflush(_stream); + + if (_flatten >= _context) _flatten = 0; + *_context = seq; +} + + +// These four functions cannot be inlined as pointers to these +// functions are needed for operator << (_context_t) to work. +void json::flat(json & j) throw() { if (!j._flatten) j._flatten = j._context; } +void json::close(json & j) throw() { j.pop_context(); } +void json::object(json & j) throw() { j.push_context('{', '}'); } +void json::array(json & j) throw() { j.push_context('[', ']'); } +void json::item(json & j) throw() +{ + while (j._context > j._contexts+1 && j._context[-1] != arr) + j.pop_context(); +} + + +json & json::operator << (json::string s) throw() +{ + const char ctxt = _context[-1] == obj ? *_context == member ? seq : member : seq; + context(ctxt); + fprintf(_stream, "\"%s\"", s); + if (ctxt == member) fputc(' ', _stream); + + return *this; +} + +json & json::operator << (json::number f) throw() +{ + context(seq); + if (std::numeric_limits<json::number>::infinity() == f) + fputs("Infinity", _stream); + else if (-std::numeric_limits<json::number>::infinity() == f) + fputs("-Infinity", _stream); + else if (std::numeric_limits<json::number>::quiet_NaN() == f || + std::numeric_limits<json::number>::signaling_NaN() == f) + fputs("NaN", _stream); + else + fprintf(_stream, "%g", f); + return *this; +} +json & json::operator << (json::integer d) throw() { context(seq); fprintf(_stream, "%ld", d); return *this; } +json & json::operator << (long unsigned d) throw() { context(seq); fprintf(_stream, "%ld", d); return *this; } +json & json::operator << (json::boolean b) throw() { context(seq); fputs(b ? "true" : "false", _stream); return *this; } +json & json::operator << (json::_null_t) throw() { context(seq); fputs("null",_stream); return *this; } + +#endif + |