src/Resource/StringUtilities.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Sverre Rabbelier                                *
   3  *   sverre@rabbelier.nl                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 3 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #pragma once
  21
  22 /**
  23  * @file StringUtilities.h
  24  * This file contains the String class.
  25  *
  26  * @see String
  27  */
  28
  29 #include "Types.h"
  30 #include "Global.h"
  31
  32 /**
  33  * This class provides a set of utility functions that operate on strings.
  34  */
  35 class String : public Singleton<String>
  36 {
  37 public:
  38         /**
  39          * Returns a vector of strings splitting the input at the specified separator.
  40          *
  41          * @param input The input to search for the separator in.
  42          * @param separator The separator to serach for.
  43          * @return The input, split into lines at each separator.
  44          */
  45         Strings lines(const std::string& input, const char* separator = "\n");
  46
  47         /**
  48          * Returns a string with the input strings concatenated.
  49          *
  50          * @param input The input to put together.
  51          * @param filler The character to put between characters parts of the input.
  52          * @param newlineat After how many lines of the input a newline will be added, when 0 no extra newlines will be added.
  53          */
  54         std::string unlines(const Strings& input, const char* filler, int newlineat = 1);
  55
  56         /**
  57          * Convert all '\n' into in the input to new lines.
  58          *
  59          * @param input The input to search for lines containing '\n'.
  60          * @return The output in which lines containing '\n' are split.
  61          */
  62         Strings unlines(const Strings& input);
  63
  64         /** Find the longest line in the input and return it's lenght. */
  65         size_t maxlength(const Strings& content);
  66
  67         /**
  68          * Draw an ASCII art box around the content using the specified header.
  69          *
  70          * @param content The lines that should be contained inside the box.
  71          * @param header The header that will be put above the result (centered), will be left out if none is specified.
  72          * @return One string that contains the 'boxed' content.
  73          */
  74         std::string box(const Strings& content, const std::string& header = Global::Get()->EmptyString);
  75
  76         /**
  77          * Creates a ASCII table out of the content using the specified header.
  78          *
  79          * @param content The 'body' of the table, is asserted to be of same 'length' as the header.
  80          * @param header The header to use for the table.
  81          * @return A set of strings that contain the table, each one row of the table.
  82          */
  83         Strings createTable(const std::vector<Strings>& content, const Strings& header);
  84
  85         /** Returns a string representation of an integer. */
  86         std::string fromInt(value_type value);
  87
  88         /** Returns a string representation of an integer. */
  89         std::string fromLong(signed long value);
  90
  91         /** Converts a string to upper case. */
  92         std::string toupper(const std::string& convertToUpper);
  93
  94         /** Converts a string to lower case. */
  95         std::string tolower(const std::string& convertToLower);
  96
  97         /** Calculates the minimum size of each field in the content using the specified fieldcount. */
  98         std::vector<int> calculateMinimumFieldSizes(const std::vector<Strings>& content, int fieldcount);
  99
 100         /** Adjusts the minimum field sizes to take in account the size of the header. */
 101         void rebaseMinimumFieldSizes(std::vector<int>& sizes, const Strings& header);
 102
 103         /** Cap the field sizes so that their sum is equal to or less than the specified maximum. */
 104         void capFieldSize(std::vector<int>& sizes, const int maxlinesize);
 105
 106         /** Cap the fields that are unproporitonally large using the specified attributes. */
 107         void capUnfairFields(std::vector<int>& sizes, int unfairFields, int maxFairSize, int slack);
 108
 109         /** Pack the specified fields into one string using the specified fieldsizes. */
 110         std::string packFields(const Strings& fields, const std::vector<int>& fieldsizes);
 111
 112 private:
 113         /** This is a singleton class, use <code>Get</code> to retreive the instance. */
 114         String(void) {};
 115
 116         /** This is a singleton class, use <code>Free</code> to free the instance. */
 117         ~String(void) {};
 118
 119         friend class Singleton<String>;
 120 };