Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/vi/build/../vi/v_sentence.c	Lines:	0	142	0.0 %
Date:	2017-11-13	Branches:	0	185	0.0 %


/*	$OpenBSD: v_sentence.c,v 1.7 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 <ctype.h>
#include <limits.h>
#include <stdio.h>

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

/*
 * !!!
 * In historic vi, a sentence was delimited by a '.', '?' or '!' character
 * followed by TWO spaces or a newline.  One or more empty lines was also
 * treated as a separate sentence.  The Berkeley documentation for historical
 * vi states that any number of ')', ']', '"' and '\'' characters can be
 * between the delimiter character and the spaces or end of line, however,
 * the historical implementation did not handle additional '"' characters.
 * We follow the documentation here, not the implementation.
 *
 * Once again, historical vi didn't do sentence movements associated with
 * counts consistently, mostly in the presence of lines containing only
 * white-space characters.
 *
 * This implementation also permits a single tab to delimit sentences, and
 * treats lines containing only white-space characters as empty lines.
 * Finally, tabs are eaten (along with spaces) when skipping to the start
 * of the text following a "sentence".
 */

/*
 * v_sentencef -- [count])
 *	Move forward count sentences.
 *
 * PUBLIC: int v_sentencef(SCR *, VICMD *);
 */
int
v_sentencef(SCR *sp, VICMD *vp)
{
	enum { BLANK, NONE, PERIOD } state;
	VCS cs;
	size_t len;
	u_long cnt;

	cs.cs_lno = vp->m_start.lno;
	cs.cs_cno = vp->m_start.cno;
	if (cs_init(sp, &cs))
		return (1);

	cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;

	/*
	 * !!!
	 * If in white-space, the next start of sentence counts as one.
	 * This may not handle "  .  " correctly, but it's real unclear
	 * what correctly means in that case.
	 */
	if (cs.cs_flags == CS_EMP || (cs.cs_flags == 0 && isblank(cs.cs_ch))) {
		if (cs_fblank(sp, &cs))
			return (1);
		if (--cnt == 0) {
			if (vp->m_start.lno != cs.cs_lno ||
			    vp->m_start.cno != cs.cs_cno)
				goto okret;
			return (1);
		}
	}

	for (state = NONE;;) {
		if (cs_next(sp, &cs))
			return (1);
		if (cs.cs_flags == CS_EOF)
			break;
		if (cs.cs_flags == CS_EOL) {
			if ((state == PERIOD || state == BLANK) && --cnt == 0) {
				if (cs_next(sp, &cs))
					return (1);
				if (cs.cs_flags == 0 &&
				    isblank(cs.cs_ch) && cs_fblank(sp, &cs))
					return (1);
				goto okret;
			}
			state = NONE;
			continue;
		}
		if (cs.cs_flags == CS_EMP) {	/* An EMP is two sentences. */
			if (--cnt == 0)
				goto okret;
			if (cs_fblank(sp, &cs))
				return (1);
			if (--cnt == 0)
				goto okret;
			state = NONE;
			continue;
		}
		switch (cs.cs_ch) {
		case '.':
		case '?':
		case '!':
			state = PERIOD;
			break;
		case ')':
		case ']':
		case '"':
		case '\'':
			if (state != PERIOD)
				state = NONE;
			break;
		case '\t':
			if (state == PERIOD)
				state = BLANK;
			/* FALLTHROUGH */
		case ' ':
			if (state == PERIOD) {
				state = BLANK;
				break;
			}
			if (state == BLANK && --cnt == 0) {
				if (cs_fblank(sp, &cs))
					return (1);
				goto okret;
			}
			/* FALLTHROUGH */
		default:
			state = NONE;
			break;
		}
	}

	/* EOF is a movement sink, but it's an error not to have moved. */
	if (vp->m_start.lno == cs.cs_lno && vp->m_start.cno == cs.cs_cno) {
		v_eof(sp, NULL);
		return (1);
	}

okret:	vp->m_stop.lno = cs.cs_lno;
	vp->m_stop.cno = cs.cs_cno;

	/*
	 * !!!
	 * Historic, uh, features, yeah, that's right, call 'em features.
	 * If the starting and ending cursor positions are at the first
	 * column in their lines, i.e. the movement is cutting entire lines,
	 * the buffer is in line mode, and the ending position is the last
	 * character of the previous line.  Note check to make sure that
	 * it's not within a single line.
	 *
	 * Non-motion commands move to the end of the range.  Delete and
	 * yank stay at the start.  Ignore others.  Adjust the end of the
	 * range for motion commands.
	 */
	if (ISMOTION(vp)) {
		if (vp->m_start.cno == 0 &&
		    (cs.cs_flags != 0 || vp->m_stop.cno == 0)) {
			if (vp->m_start.lno < vp->m_stop.lno) {
				if (db_get(sp,
				    --vp->m_stop.lno, DBG_FATAL, NULL, &len))
					return (1);
				vp->m_stop.cno = len ? len - 1 : 0;
			}
			F_SET(vp, VM_LMODE);
		} else
			--vp->m_stop.cno;
		vp->m_final = vp->m_start;
	} else
		vp->m_final = vp->m_stop;
	return (0);
}

/*
 * v_sentenceb -- [count](
 *	Move backward count sentences.
 *
 * PUBLIC: int v_sentenceb(SCR *, VICMD *);
 */
int
v_sentenceb(SCR *sp, VICMD *vp)
{
	VCS cs;
	recno_t slno;
	size_t len, scno;
	u_long cnt;
	int last;

	/*
	 * !!!
	 * Historic vi permitted the user to hit SOF repeatedly.
	 */
	if (vp->m_start.lno == 1 && vp->m_start.cno == 0)
		return (0);

	cs.cs_lno = vp->m_start.lno;
	cs.cs_cno = vp->m_start.cno;
	if (cs_init(sp, &cs))
		return (1);

	cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;

	/*
	 * !!!
	 * In empty lines, skip to the previous non-white-space character.
	 * If in text, skip to the prevous white-space character.  Believe
	 * it or not, in the paragraph:
	 *	ab cd.
	 *	AB CD.
	 * if the cursor is on the 'A' or 'B', ( moves to the 'a'.  If it
	 * is on the ' ', 'C' or 'D', it moves to the 'A'.  Yes, Virginia,
	 * Berkeley was once a major center of drug activity.
	 */
	if (cs.cs_flags == CS_EMP) {
		if (cs_bblank(sp, &cs))
			return (1);
		for (;;) {
			if (cs_prev(sp, &cs))
				return (1);
			if (cs.cs_flags != CS_EOL)
				break;
		}
	} else if (cs.cs_flags == 0 && !isblank(cs.cs_ch))
		for (;;) {
			if (cs_prev(sp, &cs))
				return (1);
			if (cs.cs_flags != 0 || isblank(cs.cs_ch))
				break;
		}

	for (last = 0;;) {
		if (cs_prev(sp, &cs))
			return (1);
		if (cs.cs_flags == CS_SOF)	/* SOF is a movement sink. */
			break;
		if (cs.cs_flags == CS_EOL) {
			last = 1;
			continue;
		}
		if (cs.cs_flags == CS_EMP) {
			if (--cnt == 0)
				goto ret;
			if (cs_bblank(sp, &cs))
				return (1);
			last = 0;
			continue;
		}
		switch (cs.cs_ch) {
		case '.':
		case '?':
		case '!':
			if (!last || --cnt != 0) {
				last = 0;
				continue;
			}

ret:			slno = cs.cs_lno;
			scno = cs.cs_cno;

			/*
			 * Move to the start of the sentence, skipping blanks
			 * and special characters.
			 */
			do {
				if (cs_next(sp, &cs))
					return (1);
			} while (!cs.cs_flags &&
			    (cs.cs_ch == ')' || cs.cs_ch == ']' ||
			    cs.cs_ch == '"' || cs.cs_ch == '\''));
			if ((cs.cs_flags || isblank(cs.cs_ch)) &&
			    cs_fblank(sp, &cs))
				return (1);

			/*
			 * If it was ".  xyz", with the cursor on the 'x', or
			 * "end.  ", with the cursor in the spaces, or the
			 * beginning of a sentence preceded by an empty line,
			 * we can end up where we started.  Fix it.
			 */
			if (vp->m_start.lno != cs.cs_lno ||
			    vp->m_start.cno != cs.cs_cno)
				goto okret;

			/*
			 * Well, if an empty line preceded possible blanks
			 * and the sentence, it could be a real sentence.
			 */
			for (;;) {
				if (cs_prev(sp, &cs))
					return (1);
				if (cs.cs_flags == CS_EOL)
					continue;
				if (cs.cs_flags == 0 && isblank(cs.cs_ch))
					continue;
				break;
			}
			if (cs.cs_flags == CS_EMP)
				goto okret;

			/* But it wasn't; try again. */
			++cnt;
			cs.cs_lno = slno;
			cs.cs_cno = scno;
			last = 0;
			break;
		case '\t':
			last = 1;
			break;
		default:
			last =
			    cs.cs_flags == CS_EOL || isblank(cs.cs_ch) ||
			    cs.cs_ch == ')' || cs.cs_ch == ']' ||
			    cs.cs_ch == '"' || cs.cs_ch == '\'' ? 1 : 0;
		}
	}

okret:	vp->m_stop.lno = cs.cs_lno;
	vp->m_stop.cno = cs.cs_cno;

	/*
	 * !!!
	 * If the starting and stopping cursor positions are at the first
	 * columns in the line, i.e. the movement is cutting an entire line,
	 * the buffer is in line mode, and the starting position is the last
	 * character of the previous line.
	 *
	 * All commands move to the end of the range.  Adjust the start of
	 * the range for motion commands.
	 */
	if (ISMOTION(vp)) {
		if (vp->m_start.cno == 0 &&
		    (cs.cs_flags != 0 || vp->m_stop.cno == 0)) {
			if (db_get(sp,
			    --vp->m_start.lno, DBG_FATAL, NULL, &len))
				return (1);
			vp->m_start.cno = len ? len - 1 : 0;
			F_SET(vp, VM_LMODE);
		} else
			--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_sentence.c,v 1.7 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 <ctype.h>
20			#include <limits.h>
21			#include <stdio.h>
22
23			#include "../common/common.h"
24			#include "vi.h"
25
26			/*
27			* !!!
28			* In historic vi, a sentence was delimited by a '.', '?' or '!' character
29			* followed by TWO spaces or a newline. One or more empty lines was also
30			* treated as a separate sentence. The Berkeley documentation for historical
31			* vi states that any number of ')', ']', '"' and '\'' characters can be
32			* between the delimiter character and the spaces or end of line, however,
33			* the historical implementation did not handle additional '"' characters.
34			* We follow the documentation here, not the implementation.
35			*
36			* Once again, historical vi didn't do sentence movements associated with
37			* counts consistently, mostly in the presence of lines containing only
38			* white-space characters.
39			*
40			* This implementation also permits a single tab to delimit sentences, and
41			* treats lines containing only white-space characters as empty lines.
42			* Finally, tabs are eaten (along with spaces) when skipping to the start
43			* of the text following a "sentence".
44			*/
45
46			/*
47			* v_sentencef -- [count])
48			* Move forward count sentences.
49			*
50			* PUBLIC: int v_sentencef(SCR , VICMD );
51			*/
52			int
53			v_sentencef(SCR sp, VICMD vp)
54			{
55			enum { BLANK, NONE, PERIOD } state;
56			VCS cs;
57			size_t len;
58			u_long cnt;
59
60			cs.cs_lno = vp->m_start.lno;
61			cs.cs_cno = vp->m_start.cno;
62			if (cs_init(sp, &cs))
63			return (1);
64
65			cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
66
67			/*
68			* !!!
69			* If in white-space, the next start of sentence counts as one.
70			* This may not handle " . " correctly, but it's real unclear
71			* what correctly means in that case.
72			*/
73			if (cs.cs_flags == CS_EMP \|\| (cs.cs_flags == 0 && isblank(cs.cs_ch))) {
74			if (cs_fblank(sp, &cs))
75			return (1);
76			if (--cnt == 0) {
77			if (vp->m_start.lno != cs.cs_lno \|\|
78			vp->m_start.cno != cs.cs_cno)
79			goto okret;
80			return (1);
81			}
82			}
83
84			for (state = NONE;;) {
85			if (cs_next(sp, &cs))
86			return (1);
87			if (cs.cs_flags == CS_EOF)
88			break;
89			if (cs.cs_flags == CS_EOL) {
90			if ((state == PERIOD \|\| state == BLANK) && --cnt == 0) {
91			if (cs_next(sp, &cs))
92			return (1);
93			if (cs.cs_flags == 0 &&
94			isblank(cs.cs_ch) && cs_fblank(sp, &cs))
95			return (1);
96			goto okret;
97			}
98			state = NONE;
99			continue;
100			}
101			if (cs.cs_flags == CS_EMP) { /* An EMP is two sentences. */
102			if (--cnt == 0)
103			goto okret;
104			if (cs_fblank(sp, &cs))
105			return (1);
106			if (--cnt == 0)
107			goto okret;
108			state = NONE;
109			continue;
110			}
111			switch (cs.cs_ch) {
112			case '.':
113			case '?':
114			case '!':
115			state = PERIOD;
116			break;
117			case ')':
118			case ']':
119			case '"':
120			case '\'':
121			if (state != PERIOD)
122			state = NONE;
123			break;
124			case '\t':
125			if (state == PERIOD)
126			state = BLANK;
127			/* FALLTHROUGH */
128			case ' ':
129			if (state == PERIOD) {
130			state = BLANK;
131			break;
132			}
133			if (state == BLANK && --cnt == 0) {
134			if (cs_fblank(sp, &cs))
135			return (1);
136			goto okret;
137			}
138			/* FALLTHROUGH */
139			default:
140			state = NONE;
141			break;
142			}
143			}
144
145			/* EOF is a movement sink, but it's an error not to have moved. */
146			if (vp->m_start.lno == cs.cs_lno && vp->m_start.cno == cs.cs_cno) {
147			v_eof(sp, NULL);
148			return (1);
149			}
150
151			okret: vp->m_stop.lno = cs.cs_lno;
152			vp->m_stop.cno = cs.cs_cno;
153
154			/*
155			* !!!
156			* Historic, uh, features, yeah, that's right, call 'em features.
157			* If the starting and ending cursor positions are at the first
158			* column in their lines, i.e. the movement is cutting entire lines,
159			* the buffer is in line mode, and the ending position is the last
160			* character of the previous line. Note check to make sure that
161			* it's not within a single line.
162			*
163			* Non-motion commands move to the end of the range. Delete and
164			* yank stay at the start. Ignore others. Adjust the end of the
165			* range for motion commands.
166			*/
167			if (ISMOTION(vp)) {
168			if (vp->m_start.cno == 0 &&
169			(cs.cs_flags != 0 \|\| vp->m_stop.cno == 0)) {
170			if (vp->m_start.lno < vp->m_stop.lno) {
171			if (db_get(sp,
172			--vp->m_stop.lno, DBG_FATAL, NULL, &len))
173			return (1);
174			vp->m_stop.cno = len ? len - 1 : 0;
175			}
176			F_SET(vp, VM_LMODE);
177			} else
178			--vp->m_stop.cno;
179			vp->m_final = vp->m_start;
180			} else
181			vp->m_final = vp->m_stop;
182			return (0);
183			}
184
185			/*
186			* v_sentenceb -- [count](
187			* Move backward count sentences.
188			*
189			* PUBLIC: int v_sentenceb(SCR , VICMD );
190			*/
191			int
192			v_sentenceb(SCR sp, VICMD vp)
193			{
194			VCS cs;
195			recno_t slno;
196			size_t len, scno;
197			u_long cnt;
198			int last;
199
200			/*
201			* !!!
202			* Historic vi permitted the user to hit SOF repeatedly.
203			*/
204			if (vp->m_start.lno == 1 && vp->m_start.cno == 0)
205			return (0);
206
207			cs.cs_lno = vp->m_start.lno;
208			cs.cs_cno = vp->m_start.cno;
209			if (cs_init(sp, &cs))
210			return (1);
211
212			cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
213
214			/*
215			* !!!
216			* In empty lines, skip to the previous non-white-space character.
217			* If in text, skip to the prevous white-space character. Believe
218			* it or not, in the paragraph:
219			* ab cd.
220			* AB CD.
221			* if the cursor is on the 'A' or 'B', ( moves to the 'a'. If it
222			* is on the ' ', 'C' or 'D', it moves to the 'A'. Yes, Virginia,
223			* Berkeley was once a major center of drug activity.
224			*/
225			if (cs.cs_flags == CS_EMP) {
226			if (cs_bblank(sp, &cs))
227			return (1);
228			for (;;) {
229			if (cs_prev(sp, &cs))
230			return (1);
231			if (cs.cs_flags != CS_EOL)
232			break;
233			}
234			} else if (cs.cs_flags == 0 && !isblank(cs.cs_ch))
235			for (;;) {
236			if (cs_prev(sp, &cs))
237			return (1);
238			if (cs.cs_flags != 0 \|\| isblank(cs.cs_ch))
239			break;
240			}
241
242			for (last = 0;;) {
243			if (cs_prev(sp, &cs))
244			return (1);
245			if (cs.cs_flags == CS_SOF) /* SOF is a movement sink. */
246			break;
247			if (cs.cs_flags == CS_EOL) {
248			last = 1;
249			continue;
250			}
251			if (cs.cs_flags == CS_EMP) {
252			if (--cnt == 0)
253			goto ret;
254			if (cs_bblank(sp, &cs))
255			return (1);
256			last = 0;
257			continue;
258			}
259			switch (cs.cs_ch) {
260			case '.':
261			case '?':
262			case '!':
263			if (!last \|\| --cnt != 0) {
264			last = 0;
265			continue;
266			}
267
268			ret: slno = cs.cs_lno;
269			scno = cs.cs_cno;
270
271			/*
272			* Move to the start of the sentence, skipping blanks
273			* and special characters.
274			*/
275			do {
276			if (cs_next(sp, &cs))
277			return (1);
278			} while (!cs.cs_flags &&
279			(cs.cs_ch == ')' \|\| cs.cs_ch == ']' \|\|
280			cs.cs_ch == '"' \|\| cs.cs_ch == '\''));
281			if ((cs.cs_flags \|\| isblank(cs.cs_ch)) &&
282			cs_fblank(sp, &cs))
283			return (1);
284
285			/*
286			* If it was ". xyz", with the cursor on the 'x', or
287			* "end. ", with the cursor in the spaces, or the
288			* beginning of a sentence preceded by an empty line,
289			* we can end up where we started. Fix it.
290			*/
291			if (vp->m_start.lno != cs.cs_lno \|\|
292			vp->m_start.cno != cs.cs_cno)
293			goto okret;
294
295			/*
296			* Well, if an empty line preceded possible blanks
297			* and the sentence, it could be a real sentence.
298			*/
299			for (;;) {
300			if (cs_prev(sp, &cs))
301			return (1);
302			if (cs.cs_flags == CS_EOL)
303			continue;
304			if (cs.cs_flags == 0 && isblank(cs.cs_ch))
305			continue;
306			break;
307			}
308			if (cs.cs_flags == CS_EMP)
309			goto okret;
310
311			/* But it wasn't; try again. */
312			++cnt;
313			cs.cs_lno = slno;
314			cs.cs_cno = scno;
315			last = 0;
316			break;
317			case '\t':
318			last = 1;
319			break;
320			default:
321			last =
322			cs.cs_flags == CS_EOL \|\| isblank(cs.cs_ch) \|\|
323			cs.cs_ch == ')' \|\| cs.cs_ch == ']' \|\|
324			cs.cs_ch == '"' \|\| cs.cs_ch == '\'' ? 1 : 0;
325			}
326			}
327
328			okret: vp->m_stop.lno = cs.cs_lno;
329			vp->m_stop.cno = cs.cs_cno;
330
331			/*
332			* !!!
333			* If the starting and stopping cursor positions are at the first
334			* columns in the line, i.e. the movement is cutting an entire line,
335			* the buffer is in line mode, and the starting position is the last
336			* character of the previous line.
337			*
338			* All commands move to the end of the range. Adjust the start of
339			* the range for motion commands.
340			*/
341			if (ISMOTION(vp)) {
342			if (vp->m_start.cno == 0 &&
343			(cs.cs_flags != 0 \|\| vp->m_stop.cno == 0)) {
344			if (db_get(sp,
345			--vp->m_start.lno, DBG_FATAL, NULL, &len))
346			return (1);
347			vp->m_start.cno = len ? len - 1 : 0;
348			F_SET(vp, VM_LMODE);
349			} else
350			--vp->m_start.cno;
351			}
352			vp->m_final = vp->m_stop;
353			return (0);
354			}