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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/vi/build/../ex/ex_join.c	Lines:	0	51	0.0 %
Date:	2017-11-07	Branches:	0	96	0.0 %


/*	$OpenBSD: ex_join.c,v 1.8 2016/01/06 22:28:52 millert Exp $	*/

/*-
 * Copyright (c) 1992, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
 *	Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/queue.h>

#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../common/common.h"

/*
 * ex_join -- :[line [,line]] j[oin][!] [count] [flags]
 *	Join lines.
 *
 * PUBLIC: int ex_join(SCR *, EXCMD *);
 */
int
ex_join(SCR *sp, EXCMD *cmdp)
{
	recno_t from, to;
	size_t blen, clen, len, tlen;
	int echar, extra, first;
	char *bp, *p, *tbp;

	NEEDFILE(sp, cmdp);

	from = cmdp->addr1.lno;
	to = cmdp->addr2.lno;

	/* Check for no lines to join. */
	if (!db_exist(sp, from + 1)) {
		msgq(sp, M_ERR, "No following lines to join");
		return (1);
	}

	GET_SPACE_RET(sp, bp, blen, 256);

	/*
	 * The count for the join command was off-by-one,
	 * historically, to other counts for other commands.
	 */
	if (FL_ISSET(cmdp->iflags, E_C_COUNT))
		++cmdp->addr2.lno;

	/*
	 * If only a single address specified, or, the same address
	 * specified twice, the from/two addresses will be the same.
	 */
	if (cmdp->addr1.lno == cmdp->addr2.lno)
		++cmdp->addr2.lno;

	clen = tlen = 0;
        for (first = 1,
	    from = cmdp->addr1.lno, to = cmdp->addr2.lno; from <= to; ++from) {
		/*
		 * Get next line.  Historic versions of vi allowed "10J" while
		 * less than 10 lines from the end-of-file, so we do too.
		 */
		if (db_get(sp, from, 0, &p, &len)) {
			cmdp->addr2.lno = from - 1;
			break;
		}

		/* Empty lines just go away. */
		if (len == 0)
			continue;

		/*
		 * Get more space if necessary.  Note, tlen isn't the length
		 * of the new line, it's roughly the amount of space needed.
		 * tbp - bp is the length of the new line.
		 */
		tlen += len + 2;
		ADD_SPACE_RET(sp, bp, blen, tlen);
		tbp = bp + clen;

		/*
		 * Historic practice:
		 *
		 * If force specified, join without modification.
		 * If the current line ends with whitespace, strip leading
		 *    whitespace from the joined line.
		 * If the next line starts with a ), do nothing.
		 * If the current line ends with ., insert two spaces.
		 * Else, insert one space.
		 *
		 * One change -- add ? and ! to the list of characters for
		 * which we insert two spaces.  I expect that POSIX 1003.2
		 * will require this as well.
		 *
		 * Echar is the last character in the last line joined.
		 */
		extra = 0;
		if (!first && !FL_ISSET(cmdp->iflags, E_C_FORCE)) {
			if (isblank(echar))
				for (; len && isblank(*p); --len, ++p);
			else if (p[0] != ')') {
				if (strchr(".?!", echar)) {
					*tbp++ = ' ';
					++clen;
					extra = 1;
				}
				*tbp++ = ' ';
				++clen;
				for (; len && isblank(*p); --len, ++p);
			}
		}

		if (len != 0) {
			memcpy(tbp, p, len);
			tbp += len;
			clen += len;
			echar = p[len - 1];
		} else
			echar = ' ';

		/*
		 * Historic practice for vi was to put the cursor at the first
		 * inserted whitespace character, if there was one, or the
		 * first character of the joined line, if there wasn't, or the
		 * last character of the line if joined to an empty line.  If
		 * a count was specified, the cursor was moved as described
		 * for the first line joined, ignoring subsequent lines.  If
		 * the join was a ':' command, the cursor was placed at the
		 * first non-blank character of the line unless the cursor was
		 * "attracted" to the end of line when the command was executed
		 * in which case it moved to the new end of line.  There are
		 * probably several more special cases, but frankly, my dear,
		 * I don't give a damn.  This implementation puts the cursor
		 * on the first inserted whitespace character, the first
		 * character of the joined line, or the last character of the
		 * line regardless.  Note, if the cursor isn't on the joined
		 * line (possible with : commands), it is reset to the starting
		 * line.
		 */
		if (first) {
			sp->cno = (tbp - bp) - (1 + extra);
			first = 0;
		} else
			sp->cno = (tbp - bp) - len - (1 + extra);
	}
	sp->lno = cmdp->addr1.lno;

	/* Delete the joined lines. */
        for (from = cmdp->addr1.lno, to = cmdp->addr2.lno; to > from; --to)
		if (db_delete(sp, to))
			goto err;

	/* If the original line changed, reset it. */
	if (!first && db_set(sp, from, bp, tbp - bp)) {
err:		FREE_SPACE(sp, bp, blen);
		return (1);
	}
	FREE_SPACE(sp, bp, blen);

	sp->rptlines[L_JOINED] += (cmdp->addr2.lno - cmdp->addr1.lno) + 1;
	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ex_join.c,v 1.8 2016/01/06 22:28:52 millert Exp $ */
2
3			/*-
4			* Copyright (c) 1992, 1993, 1994
5			* The Regents of the University of California. All rights reserved.
6			* Copyright (c) 1992, 1993, 1994, 1995, 1996
7			* Keith Bostic. All rights reserved.
8			*
9			* See the LICENSE file for redistribution information.
10			*/
11
12			#include "config.h"
13
14			#include <sys/types.h>
15			#include <sys/queue.h>
16
17			#include <bitstring.h>
18			#include <ctype.h>
19			#include <limits.h>
20			#include <stdio.h>
21			#include <stdlib.h>
22			#include <string.h>
23
24			#include "../common/common.h"
25
26			/*
27			* ex_join -- :[line [,line]] j[oin][!] [count] [flags]
28			* Join lines.
29			*
30			* PUBLIC: int ex_join(SCR , EXCMD );
31			*/
32			int
33			ex_join(SCR sp, EXCMD cmdp)
34			{
35			recno_t from, to;
36			size_t blen, clen, len, tlen;
37			int echar, extra, first;
38			char bp, p, *tbp;
39
40			NEEDFILE(sp, cmdp);
41
42			from = cmdp->addr1.lno;
43			to = cmdp->addr2.lno;
44
45			/* Check for no lines to join. */
46			if (!db_exist(sp, from + 1)) {
47			msgq(sp, M_ERR, "No following lines to join");
48			return (1);
49			}
50
51			GET_SPACE_RET(sp, bp, blen, 256);
52
53			/*
54			* The count for the join command was off-by-one,
55			* historically, to other counts for other commands.
56			*/
57			if (FL_ISSET(cmdp->iflags, E_C_COUNT))
58			++cmdp->addr2.lno;
59
60			/*
61			* If only a single address specified, or, the same address
62			* specified twice, the from/two addresses will be the same.
63			*/
64			if (cmdp->addr1.lno == cmdp->addr2.lno)
65			++cmdp->addr2.lno;
66
67			clen = tlen = 0;
68			for (first = 1,
69			from = cmdp->addr1.lno, to = cmdp->addr2.lno; from <= to; ++from) {
70			/*
71			* Get next line. Historic versions of vi allowed "10J" while
72			* less than 10 lines from the end-of-file, so we do too.
73			*/
74			if (db_get(sp, from, 0, &p, &len)) {
75			cmdp->addr2.lno = from - 1;
76			break;
77			}
78
79			/* Empty lines just go away. */
80			if (len == 0)
81			continue;
82
83			/*
84			* Get more space if necessary. Note, tlen isn't the length
85			* of the new line, it's roughly the amount of space needed.
86			* tbp - bp is the length of the new line.
87			*/
88			tlen += len + 2;
89			ADD_SPACE_RET(sp, bp, blen, tlen);
90			tbp = bp + clen;
91
92			/*
93			* Historic practice:
94			*
95			* If force specified, join without modification.
96			* If the current line ends with whitespace, strip leading
97			* whitespace from the joined line.
98			* If the next line starts with a ), do nothing.
99			* If the current line ends with ., insert two spaces.
100			* Else, insert one space.
101			*
102			* One change -- add ? and ! to the list of characters for
103			* which we insert two spaces. I expect that POSIX 1003.2
104			* will require this as well.
105			*
106			* Echar is the last character in the last line joined.
107			*/
108			extra = 0;
109			if (!first && !FL_ISSET(cmdp->iflags, E_C_FORCE)) {
110			if (isblank(echar))
111			for (; len && isblank(*p); --len, ++p);
112			else if (p[0] != ')') {
113			if (strchr(".?!", echar)) {
114			*tbp++ = ' ';
115			++clen;
116			extra = 1;
117			}
118			*tbp++ = ' ';
119			++clen;
120			for (; len && isblank(*p); --len, ++p);
121			}
122			}
123
124			if (len != 0) {
125			memcpy(tbp, p, len);
126			tbp += len;
127			clen += len;
128			echar = p[len - 1];
129			} else
130			echar = ' ';
131
132			/*
133			* Historic practice for vi was to put the cursor at the first
134			* inserted whitespace character, if there was one, or the
135			* first character of the joined line, if there wasn't, or the
136			* last character of the line if joined to an empty line. If
137			* a count was specified, the cursor was moved as described
138			* for the first line joined, ignoring subsequent lines. If
139			* the join was a ':' command, the cursor was placed at the
140			* first non-blank character of the line unless the cursor was
141			* "attracted" to the end of line when the command was executed
142			* in which case it moved to the new end of line. There are
143			* probably several more special cases, but frankly, my dear,
144			* I don't give a damn. This implementation puts the cursor
145			* on the first inserted whitespace character, the first
146			* character of the joined line, or the last character of the
147			* line regardless. Note, if the cursor isn't on the joined
148			* line (possible with : commands), it is reset to the starting
149			* line.
150			*/
151			if (first) {
152			sp->cno = (tbp - bp) - (1 + extra);
153			first = 0;
154			} else
155			sp->cno = (tbp - bp) - len - (1 + extra);
156			}
157			sp->lno = cmdp->addr1.lno;
158
159			/* Delete the joined lines. */
160			for (from = cmdp->addr1.lno, to = cmdp->addr2.lno; to > from; --to)
161			if (db_delete(sp, to))
162			goto err;
163
164			/* If the original line changed, reset it. */
165			if (!first && db_set(sp, from, bp, tbp - bp)) {
166			err: FREE_SPACE(sp, bp, blen);
167			return (1);
168			}
169			FREE_SPACE(sp, bp, blen);
170
171			sp->rptlines[L_JOINED] += (cmdp->addr2.lno - cmdp->addr1.lno) + 1;
172			return (0);
173			}