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/*
util -- auxiliary functions
Copyright (C) 1996, 1997 Dieter Baron
This file is part of cftp, a fullscreen ftp client
The author can be contacted at <dillo@giga.or.at>
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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <pwd.h>
char *
canonical(char *path, char *current)
{
char *canon, *p, *w, *d;
extern char *ftp_lcwd;
if (path[0] == '/' || path[0] == '~') {
canon = strdup(path);
for (p=canon+strlen(canon)-1; p>canon && *p=='/'; --p)
*p='\0';
}
else {
if (current == NULL)
current = ftp_lcwd;
canon = (char *)malloc(strlen(current)+strlen(path)+2);
strcpy(canon, current);
w = strdup(path);
for (p=w+strlen(w); *p=='/'; --p)
*p='\0';
for (d=strtok(w, "/"); d; d=strtok(NULL, "/")) {
if (strcmp(d, "..") == 0) {
p = strrchr(canon, '/');
if (p != NULL) {
if (p != canon)
*p = '\0';
else
strcpy(canon, "/");
}
}
else if (strcmp(d, ".") != 0) {
if (canon[strlen(canon)-1] != '/')
strcat(canon, "/");
strcat(canon, d);
}
}
free(w);
}
return canon;
}
char *
dirname(char *name)
{
char *dir;
char *p = strrchr(name, '/');
if (p == NULL || p == name)
return strdup("/");
if ((dir=(char *)malloc(p-name+1)) != NULL) {
strncpy(dir, name, p-name);
dir[p-name] = '\0';
}
return dir;
}
char *
local_exp(char *path)
{
char *home, *s, *p;
struct passwd *pw;
if (path[0] != '~')
return strdup(path);
if (path[1] == '/' || path[1] == '\0') {
s = path+1;
if ((home=getenv("HOME")) == NULL) {
if ((pw=getpwuid(getuid())) == NULL
|| (home=pw->pw_dir) == NULL)
return NULL;
}
}
else {
if (s=strchr(path, '/'))
*s = '\0';
if ((pw=getpwnam(path+1)) == NULL
|| (home=pw->pw_dir) == NULL) {
if (s)
*s = '/';
return NULL;
}
if (s)
*s = '/';
else
s = path+strlen(path);
}
if ((p=(char *)malloc(strlen(home)+strlen(s)+1)) == NULL)
return NULL;
sprintf(p, "%s%s", home, s);
return p;
}
char *
argstostr(char **args)
{
char *s;
int i, l;
l = 0;
for (i=0; args[i]; i++)
l += strlen(args[i])+1;
if ((s=(char *)malloc(l)) == NULL)
return NULL;
for (i=0; args[i]; i++) {
strcat(s, args[i]);
if (args[+1])
strcat(s, " ");
}
return s;
}
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