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common.c
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common.c
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/*
* The Minger Email Address Verification Daemon
* Copyright (C) 2012 David De Grave <[email protected]>
*
* http://sourceforge.net/projects/mingerd
*
* 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/.
*/
#include "common.h"
#include <string.h>
#include <ctype.h>
static const char cSpace[] = " \t\n\r\f\v";
char * strltrim(char *b, const char *clist)
{
char *e = b;
if ( ! clist ) clist = cSpace;
if ( strchr(clist, *e) ) {
do {
if ( ! *e ) break;
e++;
} while ( strchr(clist, *e) );
strcpy(b, e);
}
return b;
}
char * strrtrim(char *b, const char *clist)
{
char *e;
if ( ! clist ) clist = cSpace;
e = b + strlen(b);
while ( e > b && strchr(clist, *(e-1)) ) e--;
*e = 0;
return b;
}
char * strlwr(char *b)
{
register char *r;
for ( r = b ; *r ; r++ ) *r = tolower(*r);
return b;
}
bool isnumber(const char *str)
{
if ( ! *str ) return false;
while ( isdigit(*str) ) str++;
return ! *str;
}