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/* Copyright (C) 1996 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
/* Modified by Erwin Waterlander. Mar 30 1999 */
/* Oct 16 2001: On Unix directories can have a backslash (\)
* in the name, so they must not be replaced a slash (/)
* Erwin Waterlander
* Oct 26 2002: Keep first two slashes if WIN32 (UNC path)
* Erwin Waterlander
* Sep 8 2005: Keep first two slashes also for Cygwin (UNC path)
* Erwin Waterlander
* Sep 15 2011: changed parameter 'lim' to size_t type.
* Erwin Waterlander
*/
#include <stdio.h> /* For FILENAME_MAX */
#include <stdlib.h>
#include <string.h>
#include "tailor.h"
#include "config.h"
#include "wcd.h"
int wcd_is_slash(int c)
{
#if (defined(UNIX) && !defined(__CYGWIN__)) /* Oct 16 2001 */
return c == '/';
#else
return c == '/' || c == '\\';
#endif
}
static int is_term(int c)
{
#if (defined(UNIX) && !defined(__CYGWIN__)) /* Oct 16 2001 */
return c == '/' || c == '\0';
#else
return c == '/' || c == '\\' || c == '\0';
#endif
}
/* Takes as input an arbitrary path. Fixes up the path by:
1. Removing consecutive slashes
2. Removing trailing slashes
4. Removing "." in the path
7. Converting all slashes to '/'
8. Keep beginning "/"
9. Keep beginning "./"
10. Don't fix path "."
*/
void wcd_fixpath(char *in, size_t lim)
{
size_t i=0;
int drive_number= -1;
const char *ip = in;
char *out;
char *op;
if ((in == NULL) || (lim == 0))
return ;
if ((out = (char *) malloc(lim)) == NULL)
{
print_error("%s", _("malloc error in wcd_fixpath()\n"));
return;
}
op = out;
#if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__)
/* Add drive specification to output string (if present) */
if (((*ip >= 'a' && *ip <= 'z') ||
(*ip >= 'A' && *ip <= 'Z'))
&& (*(ip + 1) == ':'))
{
if (*ip >= 'a' && *ip <= 'z')
{
drive_number = *ip - 'a';
*op++ = *ip++;
}
else
{
drive_number = *ip - 'A';
if (*ip <= 'Z')
*op++ = (char)(drive_number + 'a');
else
*op++ = *ip;
++ip;
}
*op++ = *ip++;
i+=2;
}
#endif
#if (defined(_WIN32) || defined(__CYGWIN__))
/* Keep first "//" if present (UNC path) */
if (wcd_is_slash(*ip) && wcd_is_slash(*(ip + 1)))
{
ip+=2 ;
*op++ = '/';
*op++ = '/';
i+=2 ;
}
else
#endif
/* Keep first slash if present */
if (wcd_is_slash(*ip))
{
ip++;
*op++ = '/';
i++ ;
}
else /* return if ip == "." */
if ((*ip == '.') && (*(ip + 1) == '\0'))
{
free(out);
return ;
}
else /* Keep first "./" if present */
if (*ip == '.' && wcd_is_slash(*(ip + 1)))
{
ip+=2 ;
*op++ = '.';
*op++ = '/';
i+=2 ;
}
/* Step through the input path */
while ((*ip) && (i<(lim-1)))
{
/* Skip input slashes */
if (wcd_is_slash(*ip))
{
ip++;
continue;
}
/* Skip "." and output nothing */
if (*ip == '.' && is_term(*(ip + 1)))
{
ip++;
continue;
}
/* Copy path component from in to out */
if ((op > out) && (*(op-1) != '/'))
{
*op++ = '/';
i++ ;
}
while (!is_term(*ip))
{
*op++ = *ip++;
i++;
}
}
/* If root directory, insert trailing slash */
if (((drive_number >= 0) && (op == out + 2)) || (op == out)) *op++ = '/';
/* Null terminate the output */
*op = '\0';
strcpy(in,out);
free(out);
}
#ifdef TEST
int main (int argc, char *argv[])
{
char fixed[FILENAME_MAX];
if (argc > 1)
{
strcpy(fixed,argv[1]);
wcd_fixpath (fixed,FILENAME_MAX);
printf ("You mean %s?\n", fixed);
}
return 0;
}
#endif
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