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, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*
30 * Post-process adb scripts to move increment and decrement around.
31 * The reason is that at the start of each +/ line, adb prints out
32 * the current location.  If the line then increments or decrements
33 * dot before printing the user may be confused.  So we move the
34 * increment or decrement to the preceeding line.
35 */
36
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <ctype.h>
41
42#define	BUFSIZE 1024	/* gross enough to never be exceeded (we hope) */
43
44char buf1[BUFSIZE], buf2[BUFSIZE];
45
46static char *scanpastnum(char *);
47static int goodstart(char *);
48
49int
50main()
51{
52	char *cur, *last, *cp1, *cp2, *ep, *t;
53	int len;
54
55	gets(buf1);
56	last = buf1;
57	cur = buf2;
58	while (gets(cur) != NULL) {
59		if (goodstart(cur) && goodstart(last)) {
60			/*
61			 * Scan cur for initial increment.
62			 * Ignore quoted strings, tabbing, adb newlines.
63			 */
64			cp1 = cur + 2;
65			while (*cp1) {
66				if (*cp1 == '"') {
67					/* scan past quoted string */
68					while (*++cp1 && *cp1 != '"')
69						;
70					cp1++;
71					continue;
72				}
73				if (*cp1 >= '0' && *cp1 <= '9') {
74					cp2 = scanpastnum(cp1);
75				} else {
76					cp2 = cp1;
77				}
78				if (*cp2 == 't' || *cp2 == 'n' ||
79				    *cp2 == ' ') {
80					/* ok to skip over this one */
81					cp1 = cp2 + 1;
82					continue;
83				} else {
84					break;
85				}
86			}
87			/*
88			 * Cp1 now points at the first non-quoted string and
89			 * non adb tab specification.
90			 * Now determine if it's an increment or decrement.
91			 */
92			cp2 = scanpastnum(cp1);
93			if (*cp2 == '+' || *cp2 == '-') {
94				/*
95				 * This is what we were hoping to find.
96				 * Move increment or decrement into last.
97				 */
98				cp2++;
99				ep = last + strlen(last);
100				len = cp2  - cp1;
101				strncpy(ep, cp1, len);
102				ep[len] = '\0';
103				/*
104				 * Remove it from cur.
105				 */
106				strcpy(cp1, cp2);
107			}
108		}
109		/*
110		 * Prepare for next iteration.
111		 */
112		puts(last);
113		t = cur;
114		cur = last;
115		last = t;
116	}
117	puts(last);
118	return (0);
119}
120
121/*
122 * Cp points at a digit.
123 * Return pointer to next char that isn't a digit.
124 */
125static char *
126scanpastnum(char *cp1)
127{
128	char *cp2;
129
130	for (cp2 = cp1; isdigit(*cp2); cp2++)
131		;
132	return (cp2);
133}
134
135/*
136 * Check whether a line has a good starting string.
137 * We need ./ or +/ at the beginning to even think
138 * of doing this motion stuff.
139 */
140static int
141goodstart(char *cp)
142{
143	if (*cp == '.' || *cp == '+') {
144		if (*++cp == '/')
145			return (1);
146	}
147	return (0);
148}
149