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d9e9dbd6 WJ |
1 | /* |
2 | * Copyright (c) 1987 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)tree.c 5.5 (Berkeley) 2/26/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include <errno.h> | |
39 | #include <stdio.h> | |
40 | #include <stdlib.h> | |
41 | #include <string.h> | |
42 | #include "ctags.h" | |
43 | ||
44 | /* | |
45 | * pfnote -- | |
46 | * enter a new node in the tree | |
47 | */ | |
48 | pfnote(name,ln) | |
49 | char *name; | |
50 | int ln; | |
51 | { | |
52 | extern NODE *head; /* head of the sorted binary tree */ | |
53 | extern char *curfile; /* current input file name */ | |
54 | register NODE *np; | |
55 | register char *fp; | |
56 | char nbuf[MAXTOKEN]; | |
57 | ||
58 | /*NOSTRICT*/ | |
59 | if (!(np = (NODE *)malloc(sizeof(NODE)))) { | |
60 | fputs("ctags: too many entries to sort\n",stderr); | |
61 | put_entries(head); | |
62 | free_tree(head); | |
63 | /*NOSTRICT*/ | |
64 | if (!(head = np = (NODE *)malloc(sizeof(NODE)))) { | |
65 | fputs("ctags: out of space.\n",stderr); | |
66 | exit(1); | |
67 | } | |
68 | } | |
69 | if (!xflag && !strcmp(name,"main")) { | |
70 | if (!(fp = rindex(curfile,'/'))) | |
71 | fp = curfile; | |
72 | else | |
73 | ++fp; | |
74 | (void)sprintf(nbuf,"M%s",fp); | |
75 | fp = rindex(nbuf,'.'); | |
76 | if (fp && !fp[2]) | |
77 | *fp = EOS; | |
78 | name = nbuf; | |
79 | } | |
80 | if (!(np->entry = strdup(name))) { | |
81 | (void)fprintf(stderr, "ctags: %s\n", strerror(errno)); | |
82 | exit(1); | |
83 | } | |
84 | np->file = curfile; | |
85 | np->lno = ln; | |
86 | np->left = np->right = 0; | |
87 | if (!(np->pat = strdup(lbuf))) { | |
88 | (void)fprintf(stderr, "ctags: %s\n", strerror(errno)); | |
89 | exit(1); | |
90 | } | |
91 | if (!head) | |
92 | head = np; | |
93 | else | |
94 | add_node(np,head); | |
95 | } | |
96 | ||
97 | add_node(node,cur_node) | |
98 | register NODE *node, | |
99 | *cur_node; | |
100 | { | |
101 | extern int wflag; /* -w: suppress warnings */ | |
102 | register int dif; | |
103 | ||
104 | dif = strcmp(node->entry,cur_node->entry); | |
105 | if (!dif) { | |
106 | if (node->file == cur_node->file) { | |
107 | if (!wflag) | |
108 | fprintf(stderr,"Duplicate entry in file %s, line %d: %s\nSecond entry ignored\n",node->file,lineno,node->entry); | |
109 | return; | |
110 | } | |
111 | if (!cur_node->been_warned) | |
112 | if (!wflag) | |
113 | fprintf(stderr,"Duplicate entry in files %s and %s: %s (Warning only)\n",node->file,cur_node->file,node->entry); | |
114 | cur_node->been_warned = YES; | |
115 | } | |
116 | else if (dif < 0) | |
117 | if (cur_node->left) | |
118 | add_node(node,cur_node->left); | |
119 | else | |
120 | cur_node->left = node; | |
121 | else if (cur_node->right) | |
122 | add_node(node,cur_node->right); | |
123 | else | |
124 | cur_node->right = node; | |
125 | } | |
126 | ||
127 | free_tree(node) | |
128 | register NODE *node; | |
129 | { | |
130 | while (node) { | |
131 | if (node->right) | |
132 | free_tree(node->right); | |
133 | cfree(node); | |
134 | node = node->left; | |
135 | } | |
136 | } |