1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 #include <stdio.h>
27 #include <string.h>
28
29 #define iseol(c) (c == 0 || c == '\n' || strchr(com, c) != NULL)
30 #define issep(c) (strchr(sep, c) != NULL)
31 #define isignore(c) (strchr(ignore, c) != NULL)
32
33 /*
34 * getaline()
35 * Read a line from a file.
36 * What's returned is a cookie to be passed to getname
37 */
38 char **
getaline(line,maxlinelen,f,lcount,com)39 getaline(line, maxlinelen, f, lcount, com)
40 char *line;
41 int maxlinelen;
42 FILE *f;
43 int *lcount;
44 char *com;
45 {
46 char *p;
47 static char *lp;
48 do {
49 if (! fgets(line, maxlinelen, f)) {
50 return (NULL);
51 }
52 (*lcount)++;
53 } while (iseol(line[0]));
54 p = line;
55 for (;;) {
56 while (*p) {
57 p++;
58 }
59 if (*--p == '\n' && *--p == '\\') {
60 if (! fgets(p, maxlinelen, f)) {
61 break;
62 }
63 (*lcount)++;
64 } else {
65 break;
66 }
67 }
68 lp = line;
69 return (&lp);
70 }
71
72
73 /*
74 * getname()
75 * Get the next entry from the line.
76 * You tell getname() which characters to ignore before storing them
77 * into name, and which characters separate entries in a line.
78 * The cookie is updated appropriately.
79 * return:
80 * 1: one entry parsed
81 * 0: partial entry parsed, ran out of space in name
82 * -1: no more entries in line
83 */
84 int
getname(name,namelen,ignore,sep,linep,com)85 getname(name, namelen, ignore, sep, linep, com)
86 char *name;
87 int namelen;
88 char *ignore;
89 char *sep;
90 char **linep;
91 char *com;
92 {
93 register char c;
94 register char *lp;
95 register char *np;
96
97 lp = *linep;
98 do {
99 c = *lp++;
100 } while (isignore(c) && !iseol(c));
101 if (iseol(c)) {
102 *linep = lp - 1;
103 return (-1);
104 }
105 np = name;
106 while (! issep(c) && ! iseol(c) && np - name < namelen) {
107 *np++ = c;
108 c = *lp++;
109 }
110 lp--;
111 if (np - name < namelen) {
112 *np = 0;
113 if (iseol(c)) {
114 *lp = 0;
115 } else {
116 lp++; /* advance over separator */
117 }
118 } else {
119 *linep = lp;
120 return (0);
121 }
122 *linep = lp;
123 return (1);
124 }
125