135 lines
2.7 KiB
C
135 lines
2.7 KiB
C
/*
|
|
* dir.c
|
|
*
|
|
* Copyright (c) 1996-1997, John Kilburg <john@cs.unlv.edu>
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "port_before.h"
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include "port_after.h"
|
|
|
|
#include "common.h"
|
|
|
|
/*
|
|
* whack_filename
|
|
*/
|
|
char *
|
|
whack_filename(mp, p)
|
|
MemPool mp;
|
|
char *p;
|
|
{
|
|
char *n = MPStrDup(mp, p);
|
|
size_t last;
|
|
|
|
last = strlen(n) - 1;
|
|
if (*(n + last) != '/')
|
|
{
|
|
for (p = n + last; p >= n; p--)
|
|
{
|
|
if (*p == '/')
|
|
{
|
|
*(p + 1) = '\0';
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return(n);
|
|
}
|
|
|
|
/*
|
|
* compress_path
|
|
*
|
|
* This assumes sizeof(char) == 1 which is probably a really bad idea.
|
|
* ^ actually that's guaranteed by C standard -nortti, 2021
|
|
*/
|
|
char *
|
|
compress_path(mp, c, cwd)
|
|
MemPool mp;
|
|
char *c;
|
|
char *cwd;
|
|
{
|
|
char *r;
|
|
char *p, *p1, *p2, *p3;
|
|
char *ps;
|
|
|
|
if (*c != '/')
|
|
{
|
|
if (*cwd != '/') return(NULL);
|
|
r = (char *)MPGet(mp, strlen("/") + strlen(c) + strlen(cwd) + 1);
|
|
strcpy(r, cwd);
|
|
// Only add the slash if we don't already have one
|
|
// That is, if cwd ends in a slash, don't add an extra one
|
|
if (r[strlen(cwd) - 1] != '/')
|
|
strcat(r, "/");
|
|
strcat(r, c);
|
|
}
|
|
else r = MPStrDup(mp, c);
|
|
|
|
for (p = r; *p != '\0'; )
|
|
{
|
|
if (*p == '/')
|
|
{
|
|
p1 = p + 1;
|
|
if (*p1 == '.')
|
|
{
|
|
p2 = p1 + 1;
|
|
if (*p2 == '/')
|
|
{
|
|
memmove(p, p2, strlen(p2) + 1);
|
|
continue;
|
|
}
|
|
else if (*p2 == '\0')
|
|
{
|
|
*p1 = '\0';
|
|
return(r);
|
|
}
|
|
else if (*p2 == '.')
|
|
{
|
|
p3 = p2 + 1;
|
|
if (*p3 == '/' || *p3 == '\0')
|
|
{
|
|
for (ps = p - 1; ps >= r; ps--)
|
|
{
|
|
if (*ps == '/') break;
|
|
}
|
|
if (ps < r) ps = r;
|
|
if (*p3 == '/') memmove(ps, p3, strlen(p3) + 1);
|
|
else
|
|
{
|
|
*(ps + 1) = '\0';
|
|
return(r);
|
|
}
|
|
p = ps;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
p++;
|
|
}
|
|
|
|
return(r);
|
|
}
|