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/********************************************************************************
* File: strutils.cpp *
* Date: 20080508 *
* Author: Gaspar Fernández (helyo@totaki.com) *
* *
* Copyright (C) 2008 Gaspar Fernández *
* *
* 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/>. *
* *
********************************************************************************
* Description:
* Some functions with strings.
*
* Change History:
* Date Author Modification
*
********************************************************************************/
#include <cstring>
#include <string>
const std::string whiteSpaces( " \f\n\r\t\v" );
/*************************************************************
* Functions: trimRight, trimLeft, trim *
*************************************************************
* Description: *
* Erases whitespaces (or any other characters) at the *
* beginning, at the end, and at both of one string. *
* Everything considered whitespace is in shiteSpaces *
* constant (at the top of this file) *
* *
* Input: *
* string& str - The strim we'd like to trim *
* string& trimChars - Characters we want to erase. *
* *
* Output: *
* string& str (trimRight, trimLeft) - Our original string *
* trimmed. *
* string (return value in trim()) - Trimmed string. *
* *
* Change History: *
* Date Author Modification *
* *
*************************************************************/
void trimRight(string& str,
const string& trimChars = whiteSpaces )
{
string::size_type pos = str.find_last_not_of( trimChars );
str.erase( pos + 1 );
}
void trimLeft(string& str,
const string& trimChars = whiteSpaces )
{
string::size_type pos = str.find_first_not_of( trimChars );
str.erase( 0, pos );
}
string trim( string str, const string& trimChars = whiteSpaces )
{
trimRight( str, trimChars );
trimLeft( str, trimChars );
return str;
}
/*************************************************************
* Function: load_str_chr *
*************************************************************
* Description: *
* Reserves memory for a char* that will contain the *
* data within a string or another *char *
* *
* *
* Input: *
* char **ptr - Where we will store the string *
* string str (or char* str) - Where the string is *
* *
* Output: *
* The string will be in char **ptr *
* *
* Change History: *
* Date Author Modification *
* *
*************************************************************/
void load_str_chr(char **ptr, const string str)
{
*ptr=new char[str.size()+1];
std::strcpy(*ptr,str.data());
}
void load_str_chr(char **ptr, const char* str)
{
*ptr=new char[std::strlen(str)+1];
std::strcpy(*ptr,str);
}
/*************************************************************
* Function: find_str_in_array *
*************************************************************
* Description: *
* Finds a str as an element in an array of char* *
* *
* Input: *
* const char *str - The string we want to find *
* const char *array - The array where the string may be *
* int elements - The number of strings the array has *
* *
* Output: *
* int - The index of the array where the string is. *
* If we couldn't find it, it returns -1 *
* *
* Change History: *
* Date Author Modification *
* *
*************************************************************/
int find_str_in_array(const char *str, const char *array[], int elements)
{
int i=0, pos=-1;
while ((i<elements) && (pos==-1))
{
if (std::strcmp(array[i], str)==0)
pos=i;
i++;
}
return pos;
}
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