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/*
* StringUtil.cpp
*
* Copyright 2002, Log4cpp Project. All rights reserved.
*
* See the COPYING file for the terms of usage and distribution.
*/
#include "StringUtil.hh"
#include <iterator>
#include <stdio.h>
#if defined(_MSC_VER)
#define VSNPRINTF _vsnprintf
#else
#ifdef LOG4SHIB_HAVE_SNPRINTF
#define VSNPRINTF vsnprintf
#else
/* use alternative snprintf() from http://www.ijs.si/software/snprintf/ */
#define HAVE_SNPRINTF
#define PREFER_PORTABLE_SNPRINTF
#include <stdlib.h>
#include <stdarg.h>
extern "C" {
#include "snprintf.c"
}
#define VSNPRINTF portable_vsnprintf
#endif // LOG4SHIB_HAVE_SNPRINTF
#endif // _MSC_VER
namespace log4shib {
std::string StringUtil::vform(const char* format, va_list args) {
size_t size = 1024;
char* buffer = new char[size];
while (1) {
va_list args_copy;
#if defined(_MSC_VER) || defined(__BORLANDC__)
args_copy = args;
#else
va_copy(args_copy, args);
#endif
int n = VSNPRINTF(buffer, size, format, args_copy);
va_end(args_copy);
// If that worked, return a string.
if ((n > -1) && (static_cast<size_t>(n) < size)) {
std::string s(buffer);
delete [] buffer;
return s;
}
// Else try again with more space.
size = (n > -1) ?
n + 1 : // ISO/IEC 9899:1999
size * 2; // twice the old size
delete [] buffer;
buffer = new char[size];
}
}
std::string StringUtil::trim(const std::string& s) {
static const char* whiteSpace = " \t\r\n";
// test for null string
if(s.empty())
return s;
// find first non-space character
std::string::size_type b = s.find_first_not_of(whiteSpace);
if(b == std::string::npos) // No non-spaces
return "";
// find last non-space character
std::string::size_type e = s.find_last_not_of(whiteSpace);
// return the remaining characters
return std::string(s, b, e - b + 1);
}
unsigned int StringUtil::split(std::vector<std::string>& v,
const std::string& s,
char delimiter, unsigned int maxSegments) {
v.clear();
std::back_insert_iterator<std::vector<std::string> > it(v);
return split(it, s, delimiter, maxSegments);
}
}
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