src/fileops/bdcffhelper.cpp

   1 /*
   2  * Copyright (c) 2007-2013, Czirkos Zoltan http://code.google.com/p/gdash/
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "config.h"
  18
  19 #include <string>
  20 #include <iomanip>
  21 #include <stdexcept>
  22 #include "fileops/bdcffhelper.hpp"
  23 #include "misc/util.hpp"
  24 #include "misc/printf.hpp"
  25
  26 /// Create the functor which checks if the string
  27 /// has an attrib= prefix.
  28 HasAttrib::HasAttrib(const std::string &attrib_)
  29     : attrib(attrib_)
  30 {
  31     attrib+='=';
  32 }
  33
  34 /// Check if the given string has the prefix.
  35 bool HasAttrib::operator()(const std::string &str) const
  36 {
  37     return gd_str_ascii_prefix(str, attrib);
  38 }
  39
  40
  41 /// Constructor: split string given by the separator given to attrib and param.
  42 /// @param str The string to split.
  43 /// @param separator Separator between attrib and param; default is =.
  44 AttribParam::AttribParam(const std::string &str, char separator)
  45 {
  46     size_t equal=str.find(separator);
  47     if (equal==std::string::npos)
  48         throw std::runtime_error(SPrintf("No separator in line: '%s'") % str);
  49     attrib=str.substr(0, equal);
  50     param=str.substr(equal+1);
  51 }
  52
  53
  54 /// Create a new formatter.
  55 /// @param F The name of the output string; for example
  56 ///         give it "Point" if intending to write a line like "Point=1 2 DIRT"
  57 BdcffFormat::BdcffFormat(const std::string &f)
  58 :   name(f),
  59     firstparam(true)
  60 {
  61     os << std::setprecision(4) << std::fixed;
  62 }
  63
  64 /// Get the output string.
  65 /// @return The converted string.
  66 std::string BdcffFormat::str() const
  67 {
  68     if (name.empty())
  69         return os.str();
  70     else
  71         return name+'='+os.str();
  72 }
  73
  74 /// Start a new conversion with a new name.
  75 /// @param f The new name.
  76 void BdcffFormat::start_new(const std::string &f)
  77 {
  78     name=f;
  79     firstparam=true;
  80     os.str("");     /* clear output */
  81 }