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/* RCS $Id: path.c,v 1.1.1.1 2000/09/22 15:33:25 hr Exp $
--
-- SYNOPSIS
-- Pathname manipulation code
--
-- DESCRIPTION
-- Pathname routines to handle building and pulling appart
-- pathnames.
--
-- AUTHOR
-- Dennis Vadura, dvadura@dmake.wticorp.com
--
-- WWW
-- http://dmake.wticorp.com/
--
-- COPYRIGHT
-- Copyright (c) 1996,1997 by WTI Corp. All rights reserved.
--
-- This program is NOT free software; you can redistribute it and/or
-- modify it under the terms of the Software License Agreement Provided
-- in the file <distribution-root>/readme/license.txt.
--
-- LOG
-- Use cvs log to obtain detailed change logs.
*/
#include "extern.h"
/*
** Return the suffix portion of a filename, assumed to begin with a `.'.
*/
PUBLIC char *
Get_suffix(name)
char *name;
{
char *suff;
if(name == NIL(char) || (suff = strrchr(name, '.')) == NIL(char))
suff = ".NULL";
return (suff);
}
PUBLIC char *
Basename(path)
char *path;
{
char *p;
char *q;
if( path && *(q = path) ) {
for(; *(p=DmStrPbrk(q, DirBrkStr)) != '\0'; q = p+1 );
if( !*q ) {
for( p=q-1; p != path; --p )
if( strchr( DirBrkStr, *p ) == NIL(char) ) return( p+1 );
return( strchr(DirBrkStr, *p)?path:(p+1) );
}
path = q;
}
return( path );
}
PUBLIC char *
Filedir(path)
char *path;
{
char *p;
char *q;
if( path && *(q = path) ) {
for(; *(p=DmStrPbrk(q,DirBrkStr)) != '\0'; q=p+1 );
if (q == path) return("");
for(p=q-1; p!=path; --p)
if( strchr(DirBrkStr,*p) == NIL(char) )
break;
p[1] = '\0';
}
return(path);
}
/*
** Take dir and name, and return a path which has dir as the directory
** and name afterwards.
**
** N.B. Assumes that the dir separator string is in DirSepStr.
** Return path is built in a static buffer, if you need to use it
** again you must strdup the result returned by Build_path.
*/
PUBLIC char *
Build_path(dir, name)
char *dir;
char *name;
{
register char *p;
register char *q;
static char *path = NIL(char);
static unsigned buflen = 0;
int plen = 0;
int dlen = 0;
int len;
if( dir != NIL(char) ) dlen = strlen( dir );
if( name != NIL(char) ) plen = strlen( name );
len = plen+dlen+strlen(DirSepStr)+1;
if( len > buflen ) {
buflen = (len+16) & ~0xf; /* buf is always multiple of 16 */
if( path == NIL(char) )
path = MALLOC( buflen, char );
else
path = realloc( path, (unsigned) (buflen*sizeof(char)) );
}
*path = '\0';
if( dlen ) {
strcpy( path, dir );
if( *path && strchr(DirBrkStr, dir[dlen-1]) == NIL(char) )
strcat( path, DirSepStr );
}
if ( plen ) {
while ( *name && strchr(DirBrkStr,*name) != 0 ) name++;
strcat( path, name );
}
q=path;
while( *q ) {
char *t;
p=DmStrPbrk(q,DirBrkStr);
t=DmStrPbrk(p+1,DirBrkStr);
if( !*p || !*t ) break;
if ( p-q == 1 && *q == '.' ) {
strcpy(q,DmStrSpn(p,DirBrkStr));
q = path;
}
else if (
!(p-q == 2 && strncmp(q,"..",2) == 0)
&& (t-p-1 == 2 && strncmp(p+1,"..",2) == 0)
) {
strcpy(q,DmStrSpn(t,DirBrkStr));
q = path;
}
else
q = p+1;
}
return( path );
}
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