/* vifm
 * Copyright (C) 2011 xaizek.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "utils.h"

#include <stddef.h> /* size_t */
#include <stdlib.h> /* qsort() */

void
expand_squotes_escaping(char s[])
{
	char *p;
	int sq_found;

	p = s++;
	sq_found = *p == '\'';
	while(*p != '\0')
	{
		if(*s == '\'' && sq_found)
		{
			sq_found = 0;
		}
		else
		{
			*++p = *s;
			sq_found = *s == '\'';
		}
		s++;
	}
}

void
expand_dquotes_escaping(char s[])
{
	static const char table[] =
						/* 00  01  02  03  04  05  06  07  08  09  0a  0b  0c  0d  0e  0f */
	/* 00 */	"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
	/* 10 */	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
	/* 20 */	"\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f"
	/* 30 */	"\x00\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f"
	/* 40 */	"\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f"
	/* 50 */	"\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f"
	/* 60 */	"\x60\x07\x0b\x63\x64\x65\x0c\x67\x68\x69\x6a\x6b\x6c\x6d\x0a\x6f"
	/* 70 */	"\x70\x71\x0d\x73\x09\x75\x0b\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"
	/* 80 */	"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"
	/* 90 */	"\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f"
	/* a0 */	"\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf"
	/* b0 */	"\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf"
	/* c0 */	"\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf"
	/* d0 */	"\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf"
	/* e0 */	"\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
	/* f0 */	"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff";

	char *p;

	p = s;
	while(*s != '\0')
	{
		if(*s != '\\')
		{
			*p++ = *s++;
			continue;
		}
		s++;
		if(*s == '\0')
		{
			break;
		}
		*p++ = table[(int)*s++];
	}
	*p = '\0';
}

void
safe_qsort(void *base, size_t nmemb, size_t size,
		int (*compar)(const void *, const void *))
{
	if(nmemb != 0U)
	{
		/* Even when there are no entries, qsort() shouldn't be called with a NULL
		 * parameter.  It isn't allowed by the standard. */
		qsort(base, nmemb, size, compar);
	}
}

/* vim: set tabstop=2 softtabstop=2 shiftwidth=2 noexpandtab cinoptions-=(0 : */
/* vim: set cinoptions+=t0 filetype=c : */