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// ========================================================================
// gnubiff -- a mail notification program
// Copyright (c) 2000-2008 Nicolas Rougier, 2004-2008 Robert Sowada
//
// This program is free software: you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 3 of the
// 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// ========================================================================
//
// File : $RCSfile: support.h,v $
// Revision : $Revision: 1.16.2.2 $
// Revision date : $Date: 2008/03/22 02:08:51 $
// Author(s) : Nicolas Rougier, Robert Sowada
// Short : Support functions
//
// This file is part of gnubiff.
//
// -*- mode:C++; tab-width:4; c-basic-offset:4; indent-tabs-mode:nil -*-
// ========================================================================
#ifndef __SUPPORT_H__
#define __SUPPORT_H__
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "nls.h"
#include <glib.h>
#include <sstream>
#include <string>
#include <vector>
/**
* This class provides various support functions.
*
* @see In the class Decoding are support functions for decoding, encoding
* and converting.
*/
class Support
{
protected:
// Basic string functions
gchar *utf8_strndup (const gchar *str, gsize n);
// Advanced string functions
std::string substitute (std::string format, std::string chars,
std::vector<std::string> toinsert);
gboolean numbersequence_to_vector (const std::string &seq,
std::vector<guint> &vec, gboolean empty = true, char sep = ',',
char range = '-');
template<class Iter> std::string vector_to_numbersequence (Iter start,
Iter end, const std::string sep = std::string (", "),
const std::string range = std::string ("-"));
public:
static guint version_to_integer (std::string versionstr,
gchar sep = '.');
// File functions
static std::string add_file_to_path (const std::string &path,
const std::string file);
static std::string path_get_basename (const std::string &path);
static std::string path_get_dirname (const std::string &path);
// Debugging
static void unknown_internal_error_ (const gchar *file, guint line,
const gchar *func,
const gchar *signal);
};
/**
* Convert a sequence of unsigned integers (given by a start and end
* iterator) to a string. Consecutive numbers will be combined into a
* range expression.
*
* Example: [1,2,3,5,2,3,4,5,17,17] gives "1-3, 5, 2-5, 17, 17"
*
* @param start Start iterator
* @param end End iterator
* @param sep String to be used for separating list entries (default is
* ", ")
* @param range String to be used for ranges (default is "-")
* @return Sequence of numbers in a string
*/
template<class Iter> std::string
Support::vector_to_numbersequence (Iter start, Iter end, const std::string sep,
const std::string range)
{
std::stringstream result;
guint num = 0, last = 0, inf_bound = 0;
Iter pos = start;
while (pos != end) {
// Next number in sequence
num = *(pos++);
// No number stored
if (last == 0) {
inf_bound = last = num;
if (pos != end)
continue;
}
// Number is last number plus 1
if (last+1 == num) {
last++;
if (pos != end)
continue;
}
// We now have to put the numbers into the string
if (result.str().size() > 0)
result << sep;
result << inf_bound;
// Range?
if (last > inf_bound)
result << range << last;
// Single last number in vector?
if ((pos == end) && (last < num))
result << sep << num;
// Save new number
inf_bound = last = num;
}
return result.str ();
}
/**
* Print debug information. This function should be called in a situation
* that should never happen to provide more information in a bug report.
*/
#define unknown_internal_error() (Support::unknown_internal_error_ (__FILE__, __LINE__, __func__, ""))
#endif
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