mirror of
https://github.com/signalwire/freeswitch.git
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332 lines
9.1 KiB
C++
332 lines
9.1 KiB
C++
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/*
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KHOMP generic endpoint/channel library.
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Copyright (C) 2007-2009 Khomp Ind. & Com.
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The contents of this file are subject to the Mozilla Public License Version 1.1
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(the "License"); you may not use this file except in compliance with the
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License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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the specific language governing rights and limitations under the License.
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Alternatively, the contents of this file may be used under the terms of the
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"GNU Lesser General Public License 2.1" license (the “LGPL" License), in which
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case the provisions of "LGPL License" are applicable instead of those above.
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If you wish to allow use of your version of this file only under the terms of
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the LGPL License and not to allow others to use your version of this file under
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the MPL, indicate your decision by deleting the provisions above and replace them
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with the notice and other provisions required by the LGPL License. If you do not
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delete the provisions above, a recipient may use your version of this file under
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either the MPL or the LGPL License.
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The LGPL header follows below:
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "format.hpp"
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//#include <iostream>
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Format::Format(const char * format_string, bool raise_exception)
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: _format(format_string), _valid(true), _raise(raise_exception)
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{
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initialize(format_string);
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}
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/*
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Format::Format(std::string & format_string, bool raise_exception)
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: _format(NULL), _valid(true), _raise(raise_exception)
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{
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initialize(format_string.c_str());
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}
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*/
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Format::Format(std::string format_string, bool raise_exception)
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: _format(format_string), _valid(true), _raise(raise_exception)
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{
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initialize(format_string.c_str());
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}
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void Format::initialize(const char * format_string)
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{
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std::string txt;
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const char * ptr = format_string;
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while (*ptr != '\0')
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{
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if (*ptr != '%')
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{
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txt += *ptr;
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++ptr;
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continue;
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}
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const char * ptr2 = ptr+1;
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if (*ptr2 == '%')
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{
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txt += *ptr;
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ptr += 2;
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continue;
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}
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if (!txt.empty())
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push_argument(txt, T_LITERAL);
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std::string arg(1, *ptr);
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++ptr;
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bool finished = false;
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short long_count = 0;
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short short_count = 0;
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while(*ptr != '\0' && !finished)
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{
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switch (*ptr)
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{
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case ' ':
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// uncomplete format with ' ', make it a literal.
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arg += *ptr;
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push_argument(arg, T_LITERAL);
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finished = true;
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break;
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case '%':
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// uncomplete format with '%', make it a literal and start a new format.
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push_argument(arg, T_LITERAL);
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arg += *ptr;
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break;
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case 'h':
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short_count = std::min<short>(short_count+1, 2);
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long_count = 0;
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arg += *ptr;
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break;
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case 'l':
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long_count = std::min<short>(long_count+1, 2);
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short_count = 0;
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arg += *ptr;
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break;
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case 'd':
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case 'i':
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arg += *ptr;
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switch (long_count - short_count)
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{
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case 2:
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push_argument(arg, T_SIGNED_LONG_LONG);
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break;
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case 1:
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push_argument(arg, T_SIGNED_LONG);
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break;
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case 0:
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push_argument(arg, T_SIGNED_INT);
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break;
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case -1:
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push_argument(arg, T_SIGNED_SHORT);
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break;
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case -2:
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push_argument(arg, T_SIGNED_SHORT_SHORT);
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break;
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default:
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break;
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}
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finished = true;
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break;
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case 'o':
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case 'u':
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case 'x':
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case 'X':
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arg += *ptr;
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switch (long_count - short_count)
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{
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case 2:
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push_argument(arg, T_UNSIGNED_LONG_LONG);
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break;
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case 1:
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push_argument(arg, T_UNSIGNED_LONG);
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break;
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case 0:
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push_argument(arg, T_UNSIGNED_INT);
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break;
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case -1:
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push_argument(arg, T_UNSIGNED_SHORT);
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break;
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case -2:
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push_argument(arg, T_UNSIGNED_SHORT_SHORT);
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break;
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default:
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break;
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}
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finished = true;
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'F':
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case 'g':
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case 'G':
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case 'a':
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case 'A':
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arg += *ptr;
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push_argument(arg, T_FLOAT);
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finished = true;
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break;
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case 'c':
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arg += *ptr;
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push_argument(arg, T_CHAR);
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finished = true;
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break;
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case 's':
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arg += *ptr;
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push_argument(arg, T_STRING);
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finished = true;
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break;
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case 'p':
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arg += *ptr;
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push_argument(arg, T_POINTER);
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finished = true;
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break;
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case 'C':
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case 'S':
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case 'm':
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case 'n': // unsupported for now.
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arg += *ptr;
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push_argument(arg, T_ANYTHING);
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finished = true;
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break;
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default:
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arg += *ptr;
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break;
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}
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++ptr;
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}
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if (!arg.empty())
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push_argument(arg, T_LITERAL);
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}
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if (!txt.empty())
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push_argument(txt, T_LITERAL);
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}
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void Format::mark_invalid(std::string & msg)
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{
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if (_valid)
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{
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_valid = false;
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std::string finalmsg;
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finalmsg += "** INVALID FORMAT: ";
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finalmsg += msg;
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finalmsg += " **";
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_result = finalmsg;
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}
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}
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void Format::raise_check(void)
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{
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if (!_valid && _raise)
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throw InvalidFormat(_result);
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}
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bool Format::validity_check(void)
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{
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raise_check();
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return _valid;
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}
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const Format::Argument * Format::next_argument(void)
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{
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// std::cerr << "size: " << _args.size() << std::endl;
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while (true)
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{
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// std::cerr << "loop size: " << _args.size() << std::endl;
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if (_args.empty())
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return NULL; // throw NoArgumentLeft();
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const Argument & top = _args.front();
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if (top.type() == T_LITERAL)
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{
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// std::cerr << "top type == LITERAL, looping..." << std::endl;
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_result += top.fmts();
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pop_argument();
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}
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else
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{
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// std::cerr << "top type: " << top.type() << std::endl;
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return ⊤
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}
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}
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}
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void Format::pop_argument(void)
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{
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_args.pop();
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}
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void Format::push_argument(std::string & data, Format::Type type)
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{
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// std::cerr << "pushing type (" << type << ") with format (" << data << ")" << std::endl;
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_args.push(Argument(data, type));
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data.clear();
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}
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std::string Format::str()
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{
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if (!validity_check())
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return _result;
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if (next_argument() == NULL)
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return _result;
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std::string msg;
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msg += "too few arguments passed for format '";
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msg += _format;
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msg += "' (";
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msg += _format;
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msg += ")";
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mark_invalid(msg);
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return _result;
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}
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