1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright (c) 1999 by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate * All rights reserved.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /* vpinit - initialize vpdirs or update vpdirs based on currentdir */
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <sys/types.h>
36*0Sstevel@tonic-gate #include <string.h> /* string functions */
37*0Sstevel@tonic-gate #include <stdlib.h>
38*0Sstevel@tonic-gate #include <stdio.h> /* stderr */
39*0Sstevel@tonic-gate #include "vp.h"
40*0Sstevel@tonic-gate #include "library.h"
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate char **vpdirs; /* directories (including current) in view path */
43*0Sstevel@tonic-gate int vpndirs; /* number of directories in view path */
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate char *argv0 = "libvp"; /* command name default for messages */
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate void
vpinit(char * currentdir)48*0Sstevel@tonic-gate vpinit(char *currentdir)
49*0Sstevel@tonic-gate {
50*0Sstevel@tonic-gate char *suffix; /* path from view path node */
51*0Sstevel@tonic-gate char *vpath; /* VPATH environment variable value */
52*0Sstevel@tonic-gate char buf[MAXPATH + 1];
53*0Sstevel@tonic-gate int i;
54*0Sstevel@tonic-gate char *s;
55*0Sstevel@tonic-gate
56*0Sstevel@tonic-gate /* if an existing directory list is to be updated, free it */
57*0Sstevel@tonic-gate if (currentdir != NULL && vpndirs > 0) {
58*0Sstevel@tonic-gate for (i = 0; i < vpndirs; ++i) {
59*0Sstevel@tonic-gate free(vpdirs[i]);
60*0Sstevel@tonic-gate }
61*0Sstevel@tonic-gate free(vpdirs);
62*0Sstevel@tonic-gate vpndirs = 0;
63*0Sstevel@tonic-gate }
64*0Sstevel@tonic-gate /* return if the directory list has been computed */
65*0Sstevel@tonic-gate /* or there isn't a view path environment variable */
66*0Sstevel@tonic-gate if (vpndirs > 0 || (vpath = getenv("VPATH")) == NULL ||
67*0Sstevel@tonic-gate *vpath == '\0') {
68*0Sstevel@tonic-gate return;
69*0Sstevel@tonic-gate }
70*0Sstevel@tonic-gate /* if not given, get the current directory name */
71*0Sstevel@tonic-gate if (currentdir == NULL && (currentdir = mygetwd(buf)) == NULL) {
72*0Sstevel@tonic-gate (void) fprintf(stderr,
73*0Sstevel@tonic-gate "%s: cannot get current directory name\n", argv0);
74*0Sstevel@tonic-gate return;
75*0Sstevel@tonic-gate }
76*0Sstevel@tonic-gate /* see if this directory is in the first view path node */
77*0Sstevel@tonic-gate for (i = 0; vpath[i] == currentdir[i] && vpath[i] != '\0'; ++i) {
78*0Sstevel@tonic-gate ;
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate if (i == 0 || (vpath[i] != ':' && vpath[i] != '\0') ||
81*0Sstevel@tonic-gate (currentdir[i] != '/' && currentdir[i] != '\0')) {
82*0Sstevel@tonic-gate return;
83*0Sstevel@tonic-gate }
84*0Sstevel@tonic-gate suffix = ¤tdir[i];
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate /* count the nodes in the view path */
87*0Sstevel@tonic-gate vpndirs = 1;
88*0Sstevel@tonic-gate for (s = vpath; *s != '\0'; ++s) {
89*0Sstevel@tonic-gate if (*s == ':' && *(s + 1) != ':' && *(s + 1) != '\0') {
90*0Sstevel@tonic-gate ++vpndirs;
91*0Sstevel@tonic-gate }
92*0Sstevel@tonic-gate }
93*0Sstevel@tonic-gate /* create the source directory list */
94*0Sstevel@tonic-gate vpdirs = (char **)mymalloc(vpndirs * sizeof (char *));
95*0Sstevel@tonic-gate
96*0Sstevel@tonic-gate /* don't change VPATH in the environment */
97*0Sstevel@tonic-gate vpath = stralloc(vpath);
98*0Sstevel@tonic-gate
99*0Sstevel@tonic-gate /* split the view path into nodes */
100*0Sstevel@tonic-gate for (i = 0, s = vpath; i < vpndirs && *s != '\0'; ++i) {
101*0Sstevel@tonic-gate while (*s == ':') { /* ignore null nodes */
102*0Sstevel@tonic-gate ++s;
103*0Sstevel@tonic-gate }
104*0Sstevel@tonic-gate vpdirs[i] = s;
105*0Sstevel@tonic-gate while (*s != '\0' && *++s != ':') {
106*0Sstevel@tonic-gate if (*s == '\n') {
107*0Sstevel@tonic-gate *s = '\0';
108*0Sstevel@tonic-gate }
109*0Sstevel@tonic-gate }
110*0Sstevel@tonic-gate if (*s != '\0') {
111*0Sstevel@tonic-gate *s++ = '\0';
112*0Sstevel@tonic-gate }
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate /* convert the view path nodes to directories */
115*0Sstevel@tonic-gate for (i = 0; i < vpndirs; ++i) {
116*0Sstevel@tonic-gate s = mymalloc((strlen(vpdirs[i]) + strlen(suffix) + 1));
117*0Sstevel@tonic-gate (void) strcpy(s, vpdirs[i]);
118*0Sstevel@tonic-gate (void) strcat(s, suffix);
119*0Sstevel@tonic-gate vpdirs[i] = s;
120*0Sstevel@tonic-gate }
121*0Sstevel@tonic-gate free(vpath);
122*0Sstevel@tonic-gate }
123