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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1999 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* vpinit - initialize vpdirs or update vpdirs based on currentdir */
#include <sys/types.h>
#include <string.h> /* string functions */
#include <stdlib.h>
#include <stdio.h> /* stderr */
#include "vp.h"
#include "library.h"
char **vpdirs; /* directories (including current) in view path */
int vpndirs; /* number of directories in view path */
char *argv0 = "libvp"; /* command name default for messages */
void
vpinit(char *currentdir)
{
char *suffix; /* path from view path node */
char *vpath; /* VPATH environment variable value */
char buf[MAXPATH + 1];
int i;
char *s;
/* if an existing directory list is to be updated, free it */
if (currentdir != NULL && vpndirs > 0) {
for (i = 0; i < vpndirs; ++i) {
free(vpdirs[i]);
}
free(vpdirs);
vpndirs = 0;
}
/* return if the directory list has been computed */
/* or there isn't a view path environment variable */
if (vpndirs > 0 || (vpath = getenv("VPATH")) == NULL ||
*vpath == '\0') {
return;
}
/* if not given, get the current directory name */
if (currentdir == NULL && (currentdir = mygetwd(buf)) == NULL) {
(void) fprintf(stderr,
"%s: cannot get current directory name\n", argv0);
return;
}
/* see if this directory is in the first view path node */
for (i = 0; vpath[i] == currentdir[i] && vpath[i] != '\0'; ++i) {
;
}
if (i == 0 || (vpath[i] != ':' && vpath[i] != '\0') ||
(currentdir[i] != '/' && currentdir[i] != '\0')) {
return;
}
suffix = ¤tdir[i];
/* count the nodes in the view path */
vpndirs = 1;
for (s = vpath; *s != '\0'; ++s) {
if (*s == ':' && *(s + 1) != ':' && *(s + 1) != '\0') {
++vpndirs;
}
}
/* create the source directory list */
vpdirs = (char **)mymalloc(vpndirs * sizeof (char *));
/* don't change VPATH in the environment */
vpath = stralloc(vpath);
/* split the view path into nodes */
for (i = 0, s = vpath; i < vpndirs && *s != '\0'; ++i) {
while (*s == ':') { /* ignore null nodes */
++s;
}
vpdirs[i] = s;
while (*s != '\0' && *++s != ':') {
if (*s == '\n') {
*s = '\0';
}
}
if (*s != '\0') {
*s++ = '\0';
}
}
/* convert the view path nodes to directories */
for (i = 0; i < vpndirs; ++i) {
s = mymalloc((strlen(vpdirs[i]) + strlen(suffix) + 1));
(void) strcpy(s, vpdirs[i]);
(void) strcat(s, suffix);
vpdirs[i] = s;
}
free(vpath);
}
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