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/*---------------------------------------------------------------------------*/
/*magic.h*/
/*---------------------------------------------------------------------------*/
/*Declaration of functions for handling the magic syntax.*/
/*---------------------------------------------------------------------------*/
/*Copyright (C) 2008, 2009 Free Software Foundation, Inc. Written by
Sergiu Ivanov <unlimitedscolobb@gmail.com>.
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.*/
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
#include <string.h>
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
#include "magic.h"
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*---------Functions---------------------------------------------------------*/
/*Locates the first unescaped magic separator in the supplied
filename. Returns NULL in case it finds nothing.*/
char * magic_find_sep (const char * name)
{
/*The position of the separator */
char * sep = NULL;
/*Go through all occurrences of the separator sequence */
for (sep = strstr (name, ",,"); sep; sep = strstr (sep, ",,"))
{
/*if the current separator is not escaped, stop */
if (sep[2] != ',')
break;
sep += 2;
}
return sep;
} /*magic_process_find_sep */
/*---------------------------------------------------------------------------*/
/*Unescapes escaped separators in the substring of the filename
starting at `name` of length `sz`.*/
void magic_unescape (char * name, int sz)
{
/*A pointer for string operations */
char * str = NULL;
/*The position of the escaped separator */
char * esc = NULL;
/*Go through all occurrences of the separator sequence. Note that we
would like the whole separator to be enclosed in the substring of
length `sz`, hence the +2. */
for
(
esc = strstr (name, ",,,"); esc && (esc - name + 2 < sz);
esc = strstr (esc, ",,,")
)
{
/*we've found and escaped separator; remove the escaping comma
from the string */
for (str = ++esc; *str; str[-1] = *str, ++str);
str[-1] = 0;
--sz;
}
} /*magic_unescape */
/*---------------------------------------------------------------------------*/
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