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Added CString::Join and CString::Convert

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CString::Join works like python's string join, except that it takes 2
iterators (or pointers) instead of a whole collection
CString::Convert casts a string to another type using an intermediary
stringstream.
This commit is contained in:
Wuggingston Wugsalot
2014-01-18 21:37:59 +00:00
committed by Alexey Sokolov
parent be6094a464
commit adafe9d197
1 changed files with 37 additions and 2 deletions
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39
include/znc/ZNCString.h
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2004-2014 ZNC, see the NOTICE file for details.
* Copyright (C) 2004-2013 ZNC, see the NOTICE file for details.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@
#include <set>
#include <string>
#include <vector>
#include <sstream>
#include <sys/types.h>
#define _SQL(s) CString("'" + CString(s).Escape_n(CString::ESQL) + "'")
@@ -94,7 +95,41 @@ public:
CString(const std::string& s) : std::string(s) {}
CString(size_t n, char c) : std::string(n, c) {}
~CString() {}
/**
* Casts a CString to another type. Implemented via std::stringstream, you use this
* for any class that has an operator<<(std::ostream, YourClass).
* @param target The object to cast into. If the cast fails, its state is unspecified.
* @return True if the cast succeeds, and false if it fails.
*/
template <typename T> bool Convert(T *target) const
{
std::stringstream ss(*this);
ss >> *target;
return (bool) ss; // we don't care why it failed, only whether it failed
}
/**
* Joins a collection of objects together, using 'this' as a delimiter.
* You can pass either pointers to arrays, or iterators to collections.
* @param i_begin An iterator pointing to the beginning of a group of objects.
* @param i_end An iterator pointing past the end of a group of objects.
* @return The joined string
*/
template <typename Iterator> CString Join(Iterator i_start, const Iterator &i_end) const
{
if (i_start == i_end) return CString("");
std::ostringstream output;
output << *i_start;
while (true)
{
++i_start;
if (i_start == i_end) return CString(output.str());
output << *this;
output << *i_start;
}
}
/**
* Compare this string caselessly to some other string.
* @param s The string to compare to.