Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/vi/build/../vi/v_left.c	Lines:	0	75	0.0 %
Date:	2017-11-13	Branches:	0	90	0.0 %


/*	$OpenBSD: v_left.c,v 1.6 2014/11/12 04:28:41 bentley 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 <sys/time.h>

#include <bitstring.h>
#include <limits.h>
#include <stdio.h>

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

/*
 * v_left -- [count]^H, [count]h
 *	Move left by columns.
 *
 * PUBLIC: int v_left(SCR *, VICMD *);
 */
int
v_left(SCR *sp, VICMD *vp)
{
	recno_t cnt;

	/*
	 * !!!
	 * The ^H and h commands always failed in the first column.
	 */
	if (vp->m_start.cno == 0) {
		v_sol(sp);
		return (1);
	}

	/* Find the end of the range. */
	cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
	if (vp->m_start.cno > cnt)
		vp->m_stop.cno = vp->m_start.cno - cnt;
	else
		vp->m_stop.cno = 0;

	/*
	 * All commands move to the end of the range.  Motion commands
	 * adjust the starting point to the character before the current
	 * one.
	 */
	if (ISMOTION(vp))
		--vp->m_start.cno;
	vp->m_final = vp->m_stop;
	return (0);
}

/*
 * v_cfirst -- [count]_
 *	Move to the first non-blank character in a line.
 *
 * PUBLIC: int v_cfirst(SCR *, VICMD *);
 */
int
v_cfirst(SCR *sp, VICMD *vp)
{
	recno_t cnt, lno;

	/*
	 * !!!
	 * If the _ is a motion component, it makes the command a line motion
	 * e.g. "d_" deletes the line.  It also means that the cursor doesn't
	 * move.
	 *
	 * The _ command never failed in the first column.
	 */
	if (ISMOTION(vp))
		F_SET(vp, VM_LMODE);
	/*
	 * !!!
	 * Historically a specified count makes _ move down count - 1
	 * rows, so, "3_" is the same as "2j_".
	 */
	cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
	if (cnt != 1) {
		--vp->count;
		return (v_down(sp, vp));
	}

	/*
	 * Move to the first non-blank.
	 *
	 * Can't just use RCM_SET_FNB, in case _ is used as the motion
	 * component of another command.
	 */
	vp->m_stop.cno = 0;
	if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
		return (1);

	/*
	 * !!!
	 * The _ command has to fail if the file is empty and we're doing
	 * a delete.  If deleting line 1, and 0 is the first nonblank,
	 * make the check.
	 */
	if (vp->m_stop.lno == 1 &&
	    vp->m_stop.cno == 0 && ISCMD(vp->rkp, 'd')) {
		if (db_last(sp, &lno))
			return (1);
		if (lno == 0) {
			v_sol(sp);
			return (1);
		}
	}

	/*
	 * Delete and non-motion commands move to the end of the range,
	 * yank stays at the start.  Ignore others.
	 */
	vp->m_final =
	    ISMOTION(vp) && ISCMD(vp->rkp, 'y') ? vp->m_start : vp->m_stop;
	return (0);
}

/*
 * v_first -- ^
 *	Move to the first non-blank character in this line.
 *
 * PUBLIC: int v_first(SCR *, VICMD *);
 */
int
v_first(SCR *sp, VICMD *vp)
{
	/*
	 * !!!
	 * Yielding to none in our quest for compatibility with every
	 * historical blemish of vi, no matter how strange it might be,
	 * we permit the user to enter a count and then ignore it.
	 */

	/*
	 * Move to the first non-blank.
	 *
	 * Can't just use RCM_SET_FNB, in case ^ is used as the motion
	 * component of another command.
	 */
	vp->m_stop.cno = 0;
	if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
		return (1);

	/*
	 * !!!
	 * The ^ command succeeded if used as a command when the cursor was
	 * on the first non-blank in the line, but failed if used as a motion
	 * component in the same situation.
	 */
	if (ISMOTION(vp) && vp->m_start.cno == vp->m_stop.cno) {
		v_sol(sp);
		return (1);
	}

	/*
	 * If moving right, non-motion commands move to the end of the range.
	 * Delete and yank stay at the start.  Motion commands adjust the
	 * ending point to the character before the current ending charcter.
	 *
	 * If moving left, all commands move to the end of the range.  Motion
	 * commands adjust the starting point to the character before the
	 * current starting character.
	 */
	if (vp->m_start.cno < vp->m_stop.cno)
		if (ISMOTION(vp)) {
			--vp->m_stop.cno;
			vp->m_final = vp->m_start;
		} else
			vp->m_final = vp->m_stop;
	else {
		if (ISMOTION(vp))
			--vp->m_start.cno;
		vp->m_final = vp->m_stop;
	}
	return (0);
}

/*
 * v_ncol -- [count]|
 *	Move to column count or the first column on this line.  If the
 *	requested column is past EOL, move to EOL.  The nasty part is
 *	that we have to know character column widths to make this work.
 *
 * PUBLIC: int v_ncol(SCR *, VICMD *);
 */
int
v_ncol(SCR *sp, VICMD *vp)
{
	if (F_ISSET(vp, VC_C1SET) && vp->count > 1) {
		--vp->count;
		vp->m_stop.cno =
		    vs_colpos(sp, vp->m_start.lno, (size_t)vp->count);
		/*
		 * !!!
		 * The | command succeeded if used as a command and the cursor
		 * didn't move, but failed if used as a motion component in the
		 * same situation.
		 */
		if (ISMOTION(vp) && vp->m_stop.cno == vp->m_start.cno) {
			v_nomove(sp);
			return (1);
		}
	} else {
		/*
		 * !!!
		 * The | command succeeded if used as a command in column 0
		 * without a count, but failed if used as a motion component
		 * in the same situation.
		 */
		if (ISMOTION(vp) && vp->m_start.cno == 0) {
			v_sol(sp);
			return (1);
		}
		vp->m_stop.cno = 0;
	}

	/*
	 * If moving right, non-motion commands move to the end of the range.
	 * Delete and yank stay at the start.  Motion commands adjust the
	 * ending point to the character before the current ending charcter.
	 *
	 * If moving left, all commands move to the end of the range.  Motion
	 * commands adjust the starting point to the character before the
	 * current starting character.
	 */
	if (vp->m_start.cno < vp->m_stop.cno)
		if (ISMOTION(vp)) {
			--vp->m_stop.cno;
			vp->m_final = vp->m_start;
		} else
			vp->m_final = vp->m_stop;
	else {
		if (ISMOTION(vp))
			--vp->m_start.cno;
		vp->m_final = vp->m_stop;
	}
	return (0);
}

/*
 * v_zero -- 0
 *	Move to the first column on this line.
 *
 * PUBLIC: int v_zero(SCR *, VICMD *);
 */
int
v_zero(SCR *sp, VICMD *vp)
{
	/*
	 * !!!
	 * The 0 command succeeded if used as a command in the first column
	 * but failed if used as a motion component in the same situation.
	 */
	if (ISMOTION(vp) && vp->m_start.cno == 0) {
		v_sol(sp);
		return (1);
	}

	/*
	 * All commands move to the end of the range.  Motion commands
	 * adjust the starting point to the character before the current
	 * one.
	 */
	vp->m_stop.cno = 0;
	if (ISMOTION(vp))
		--vp->m_start.cno;
	vp->m_final = vp->m_stop;
	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: v_left.c,v 1.6 2014/11/12 04:28:41 bentley 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			#include <sys/time.h>
17
18			#include <bitstring.h>
19			#include <limits.h>
20			#include <stdio.h>
21
22			#include "../common/common.h"
23			#include "vi.h"
24
25			/*
26			* v_left -- [count]^H, [count]h
27			* Move left by columns.
28			*
29			* PUBLIC: int v_left(SCR , VICMD );
30			*/
31			int
32			v_left(SCR sp, VICMD vp)
33			{
34			recno_t cnt;
35
36			/*
37			* !!!
38			* The ^H and h commands always failed in the first column.
39			*/
40			if (vp->m_start.cno == 0) {
41			v_sol(sp);
42			return (1);
43			}
44
45			/* Find the end of the range. */
46			cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
47			if (vp->m_start.cno > cnt)
48			vp->m_stop.cno = vp->m_start.cno - cnt;
49			else
50			vp->m_stop.cno = 0;
51
52			/*
53			* All commands move to the end of the range. Motion commands
54			* adjust the starting point to the character before the current
55			* one.
56			*/
57			if (ISMOTION(vp))
58			--vp->m_start.cno;
59			vp->m_final = vp->m_stop;
60			return (0);
61			}
62
63			/*
64			* v_cfirst -- [count]_
65			* Move to the first non-blank character in a line.
66			*
67			* PUBLIC: int v_cfirst(SCR , VICMD );
68			*/
69			int
70			v_cfirst(SCR sp, VICMD vp)
71			{
72			recno_t cnt, lno;
73
74			/*
75			* !!!
76			* If the _ is a motion component, it makes the command a line motion
77			* e.g. "d_" deletes the line. It also means that the cursor doesn't
78			* move.
79			*
80			* The _ command never failed in the first column.
81			*/
82			if (ISMOTION(vp))
83			F_SET(vp, VM_LMODE);
84			/*
85			* !!!
86			* Historically a specified count makes _ move down count - 1
87			* rows, so, "3_" is the same as "2j_".
88			*/
89			cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
90			if (cnt != 1) {
91			--vp->count;
92			return (v_down(sp, vp));
93			}
94
95			/*
96			* Move to the first non-blank.
97			*
98			* Can't just use RCM_SET_FNB, in case _ is used as the motion
99			* component of another command.
100			*/
101			vp->m_stop.cno = 0;
102			if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
103			return (1);
104
105			/*
106			* !!!
107			* The _ command has to fail if the file is empty and we're doing
108			* a delete. If deleting line 1, and 0 is the first nonblank,
109			* make the check.
110			*/
111			if (vp->m_stop.lno == 1 &&
112			vp->m_stop.cno == 0 && ISCMD(vp->rkp, 'd')) {
113			if (db_last(sp, &lno))
114			return (1);
115			if (lno == 0) {
116			v_sol(sp);
117			return (1);
118			}
119			}
120
121			/*
122			* Delete and non-motion commands move to the end of the range,
123			* yank stays at the start. Ignore others.
124			*/
125			vp->m_final =
126			ISMOTION(vp) && ISCMD(vp->rkp, 'y') ? vp->m_start : vp->m_stop;
127			return (0);
128			}
129
130			/*
131			* v_first -- ^
132			* Move to the first non-blank character in this line.
133			*
134			* PUBLIC: int v_first(SCR , VICMD );
135			*/
136			int
137			v_first(SCR sp, VICMD vp)
138			{
139			/*
140			* !!!
141			* Yielding to none in our quest for compatibility with every
142			* historical blemish of vi, no matter how strange it might be,
143			* we permit the user to enter a count and then ignore it.
144			*/
145
146			/*
147			* Move to the first non-blank.
148			*
149			* Can't just use RCM_SET_FNB, in case ^ is used as the motion
150			* component of another command.
151			*/
152			vp->m_stop.cno = 0;
153			if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
154			return (1);
155
156			/*
157			* !!!
158			* The ^ command succeeded if used as a command when the cursor was
159			* on the first non-blank in the line, but failed if used as a motion
160			* component in the same situation.
161			*/
162			if (ISMOTION(vp) && vp->m_start.cno == vp->m_stop.cno) {
163			v_sol(sp);
164			return (1);
165			}
166
167			/*
168			* If moving right, non-motion commands move to the end of the range.
169			* Delete and yank stay at the start. Motion commands adjust the
170			* ending point to the character before the current ending charcter.
171			*
172			* If moving left, all commands move to the end of the range. Motion
173			* commands adjust the starting point to the character before the
174			* current starting character.
175			*/
176			if (vp->m_start.cno < vp->m_stop.cno)
177			if (ISMOTION(vp)) {
178			--vp->m_stop.cno;
179			vp->m_final = vp->m_start;
180			} else
181			vp->m_final = vp->m_stop;
182			else {
183			if (ISMOTION(vp))
184			--vp->m_start.cno;
185			vp->m_final = vp->m_stop;
186			}
187			return (0);
188			}
189
190			/*
191			* v_ncol -- [count]\|
192			* Move to column count or the first column on this line. If the
193			* requested column is past EOL, move to EOL. The nasty part is
194			* that we have to know character column widths to make this work.
195			*
196			* PUBLIC: int v_ncol(SCR , VICMD );
197			*/
198			int
199			v_ncol(SCR sp, VICMD vp)
200			{
201			if (F_ISSET(vp, VC_C1SET) && vp->count > 1) {
202			--vp->count;
203			vp->m_stop.cno =
204			vs_colpos(sp, vp->m_start.lno, (size_t)vp->count);
205			/*
206			* !!!
207			* The \| command succeeded if used as a command and the cursor
208			* didn't move, but failed if used as a motion component in the
209			* same situation.
210			*/
211			if (ISMOTION(vp) && vp->m_stop.cno == vp->m_start.cno) {
212			v_nomove(sp);
213			return (1);
214			}
215			} else {
216			/*
217			* !!!
218			* The \| command succeeded if used as a command in column 0
219			* without a count, but failed if used as a motion component
220			* in the same situation.
221			*/
222			if (ISMOTION(vp) && vp->m_start.cno == 0) {
223			v_sol(sp);
224			return (1);
225			}
226			vp->m_stop.cno = 0;
227			}
228
229			/*
230			* If moving right, non-motion commands move to the end of the range.
231			* Delete and yank stay at the start. Motion commands adjust the
232			* ending point to the character before the current ending charcter.
233			*
234			* If moving left, all commands move to the end of the range. Motion
235			* commands adjust the starting point to the character before the
236			* current starting character.
237			*/
238			if (vp->m_start.cno < vp->m_stop.cno)
239			if (ISMOTION(vp)) {
240			--vp->m_stop.cno;
241			vp->m_final = vp->m_start;
242			} else
243			vp->m_final = vp->m_stop;
244			else {
245			if (ISMOTION(vp))
246			--vp->m_start.cno;
247			vp->m_final = vp->m_stop;
248			}
249			return (0);
250			}
251
252			/*
253			* v_zero -- 0
254			* Move to the first column on this line.
255			*
256			* PUBLIC: int v_zero(SCR , VICMD );
257			*/
258			int
259			v_zero(SCR sp, VICMD vp)
260			{
261			/*
262			* !!!
263			* The 0 command succeeded if used as a command in the first column
264			* but failed if used as a motion component in the same situation.
265			*/
266			if (ISMOTION(vp) && vp->m_start.cno == 0) {
267			v_sol(sp);
268			return (1);
269			}
270
271			/*
272			* All commands move to the end of the range. Motion commands
273			* adjust the starting point to the character before the current
274			* one.
275			*/
276			vp->m_stop.cno = 0;
277			if (ISMOTION(vp))
278			--vp->m_start.cno;
279			vp->m_final = vp->m_stop;
280			return (0);
281			}