The Tor Browser: gfx/graphite2/src/json.cpp@b8a032363ba2 (annotated)

gfx/graphite2/src/json.cpp@b8a032363ba2 (annotated)

gfx/graphite2/src/json.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*  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 <stdio.h>
 #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); 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

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