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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/vi/build/../common/msg.c	Lines:	0	225	0.0 %
Date:	2017-11-07	Branches:	0	289	0.0 %


/*	$OpenBSD: msg.c,v 1.27 2016/12/18 18:28:39 krw Exp $	*/

/*-
 * Copyright (c) 1991, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1991, 1993, 1994, 1995, 1996
 *	Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/queue.h>
#include <sys/stat.h>
#include <sys/time.h>

#include <bitstring.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

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

/*
 * msgq --
 *	Display a message.
 *
 * PUBLIC: void msgq(SCR *, mtype_t, const char *, ...);
 */
void
msgq(SCR *sp, mtype_t mt, const char *fmt, ...)
{
	static int reenter;		/* STATIC: Re-entrancy check. */
	GS *gp;
	size_t blen, len, mlen, nlen;
	const char *p;
	char *bp, *mp;
        va_list ap;

	/*
	 * !!!
	 * It's possible to enter msg when there's no screen to hold the
	 * message.  If sp is NULL, ignore the special cases and put the
	 * message out to stderr.
	 */
	if (sp == NULL) {
		gp = NULL;
		if (mt == M_BERR)
			mt = M_ERR;
		else if (mt == M_VINFO)
			mt = M_INFO;
	} else {
		gp = sp->gp;
		switch (mt) {
		case M_BERR:
			if (F_ISSET(sp, SC_VI) && !O_ISSET(sp, O_VERBOSE)) {
				F_SET(gp, G_BELLSCHED);
				return;
			}
			mt = M_ERR;
			break;
		case M_VINFO:
			if (!O_ISSET(sp, O_VERBOSE))
				return;
			mt = M_INFO;
			/* FALLTHROUGH */
		case M_INFO:
			if (F_ISSET(sp, SC_EX_SILENT))
				return;
			break;
		case M_ERR:
		case M_SYSERR:
			break;
		default:
			abort();
		}
	}

	/*
	 * It's possible to reenter msg when it allocates space.  We're
	 * probably dead anyway, but there's no reason to drop core.
	 *
	 * XXX
	 * Yes, there's a race, but it should only be two instructions.
	 */
	if (reenter++)
		return;

	/* Get space for the message. */
	nlen = 1024;
	if (0) {
retry:		FREE_SPACE(sp, bp, blen);
		nlen *= 2;
	}
	bp = NULL;
	blen = 0;
	GET_SPACE_GOTO(sp, bp, blen, nlen);

	/*
	 * Error prefix.
	 *
	 * mp:	 pointer to the current next character to be written
	 * mlen: length of the already written characters
	 * blen: total length of the buffer
	 */
#define	REM	(blen - mlen)
	mp = bp;
	mlen = 0;
	if (mt == M_SYSERR) {
		p = "Error: ";
		len = strlen(p);
		if (REM < len)
			goto retry;
		memcpy(mp, p, len);
		mp += len;
		mlen += len;
	}

	/*
	 * If we're running an ex command that the user didn't enter, display
	 * the file name and line number prefix.
	 */
	if ((mt == M_ERR || mt == M_SYSERR) &&
	    sp != NULL && gp != NULL && gp->if_name != NULL) {
		for (p = gp->if_name; *p != '\0'; ++p) {
			len = snprintf(mp, REM, "%s", KEY_NAME(sp, *p));
			mp += len;
			if ((mlen += len) > blen)
				goto retry;
		}
		len = snprintf(mp, REM, ", %d: ", gp->if_lno);
		mp += len;
		if ((mlen += len) > blen)
			goto retry;
	}

	/* If nothing to format, we're done. */
	if (fmt == NULL) {
		len = 0;
		goto nofmt;
	}

	/* Format the arguments into the string. */
        va_start(ap, fmt);
	len = vsnprintf(mp, REM, fmt, ap);
	va_end(ap);
	if (len >= nlen)
		goto retry;

nofmt:	mp += len;
	if ((mlen += len) > blen)
		goto retry;
	if (mt == M_SYSERR) {
		len = snprintf(mp, REM, ": %s", strerror(errno));
		mp += len;
		if ((mlen += len) > blen)
			goto retry;
		mt = M_ERR;
	}

	/* Add trailing newline. */
	if ((mlen += 1) > blen)
		goto retry;
	*mp = '\n';

	if (sp != NULL)
		(void)ex_fflush(sp);
	if (gp != NULL)
		gp->scr_msg(sp, mt, bp, mlen);
	else
		(void)fprintf(stderr, "%.*s", (int)mlen, bp);

	/* Cleanup. */
	FREE_SPACE(sp, bp, blen);
alloc_err:
	reenter = 0;
}

/*
 * msgq_str --
 *	Display a message with an embedded string.
 *
 * PUBLIC: void msgq_str(SCR *, mtype_t, char *, char *);
 */
void
msgq_str(SCR *sp, mtype_t mtype, char *str, char *fmt)
{
	int nf, sv_errno;
	char *p;

	if (str == NULL) {
		msgq(sp, mtype, fmt);
		return;
	}

	sv_errno = errno;
	p = msg_print(sp, str, &nf);
	errno = sv_errno;
	msgq(sp, mtype, fmt, p);
	if (nf)
		FREE_SPACE(sp, p, 0);
}

/*
 * mod_rpt --
 *	Report on the lines that changed.
 *
 * !!!
 * Historic vi documentation (USD:15-8) claimed that "The editor will also
 * always tell you when a change you make affects text which you cannot see."
 * This wasn't true -- edit a large file and do "100d|1".  We don't implement
 * this semantic since it requires tracking each line that changes during a
 * command instead of just keeping count.
 *
 * Line counts weren't right in historic vi, either.  For example, given the
 * file:
 *	abc
 *	def
 * the command 2d}, from the 'b' would report that two lines were deleted,
 * not one.
 *
 * PUBLIC: void mod_rpt(SCR *);
 */
void
mod_rpt(SCR *sp)
{
	static char * const action[] = {
		"added",
		"changed",
		"deleted",
		"joined",
		"moved",
		"shifted",
		"yanked",
	};
	static char * const lines[] = {
		"line",
		"lines",
	};
	recno_t total;
	u_long rptval;
	int first, cnt;
	size_t blen, len, tlen;
	const char *t;
	char * const *ap;
	char *bp, *p;

	/* Change reports are turned off in batch mode. */
	if (F_ISSET(sp, SC_EX_SILENT))
		return;

	/* Reset changing line number. */
	sp->rptlchange = OOBLNO;

	/*
	 * Don't build a message if not enough changed.
	 *
	 * !!!
	 * And now, a vi clone test.  Historically, vi reported if the number
	 * of changed lines was > than the value, not >=, unless it was a yank
	 * command, which used >=.  No lie.  Furthermore, an action was never
	 * reported for a single line action.  This is consistent for actions
	 * other than yank, but yank didn't report single line actions even if
	 * the report edit option was set to 1.  In addition, setting report to
	 * 0 in the 4BSD historic vi was equivalent to setting it to 1, for an
	 * unknown reason (this bug was fixed in System III/V at some point).
	 * I got complaints, so nvi conforms to System III/V historic practice
	 * except that we report a yank of 1 line if report is set to 1.
	 */
#define	ARSIZE(a)	sizeof(a) / sizeof (*a)
#define	MAXNUM		25
	rptval = O_VAL(sp, O_REPORT);
	for (cnt = 0, total = 0; cnt < ARSIZE(action); ++cnt)
		total += sp->rptlines[cnt];
	if (total == 0)
		return;
	if (total <= rptval && sp->rptlines[L_YANKED] < rptval) {
		for (cnt = 0; cnt < ARSIZE(action); ++cnt)
			sp->rptlines[cnt] = 0;
		return;
	}

	/* Build and display the message. */
	GET_SPACE_GOTO(sp, bp, blen, sizeof(action) * MAXNUM + 1);
	for (p = bp, first = 1, tlen = 0,
	    ap = action, cnt = 0; cnt < ARSIZE(action); ++ap, ++cnt)
		if (sp->rptlines[cnt] != 0) {
			if (first)
				first = 0;
			else {
				*p++ = ';';
				*p++ = ' ';
				tlen += 2;
			}
			len = snprintf(p, MAXNUM, "%u ", sp->rptlines[cnt]);
			p += len;
			tlen += len;
			t = lines[sp->rptlines[cnt] == 1 ? 0 : 1];
			len = strlen(t);
			memcpy(p, t, len);
			p += len;
			tlen += len;
			*p++ = ' ';
			++tlen;
			len = strlen(*ap);
			memcpy(p, *ap, len);
			p += len;
			tlen += len;
			sp->rptlines[cnt] = 0;
		}

	/* Add trailing newline. */
	*p = '\n';
	++tlen;

	(void)ex_fflush(sp);
	sp->gp->scr_msg(sp, M_INFO, bp, tlen);

	FREE_SPACE(sp, bp, blen);
alloc_err:
	return;

#undef ARSIZE
#undef MAXNUM
}

/*
 * msgq_status --
 *	Report on the file's status.
 *
 * PUBLIC: void msgq_status(SCR *, recno_t, u_int);
 */
void
msgq_status(SCR *sp, recno_t lno, u_int flags)
{
	recno_t last;
	size_t blen, len;
	int cnt, needsep;
	const char *t;
	char **ap, *bp, *np, *p, *s, *ep;

	/* Get sufficient memory. */
	len = strlen(sp->frp->name);
	GET_SPACE_GOTO(sp, bp, blen, len * MAX_CHARACTER_COLUMNS + 128);
	p = bp;
	ep = bp + blen;

	/* Copy in the filename. */
	for (t = sp->frp->name; *t != '\0'; ++t) {
		len = KEY_LEN(sp, *t);
		memcpy(p, KEY_NAME(sp, *t), len);
		p += len;
	}
	np = p;
	*p++ = ':';
	*p++ = ' ';

	/* Copy in the argument count. */
	if (F_ISSET(sp, SC_STATUS_CNT) && sp->argv != NULL) {
		for (cnt = 0, ap = sp->argv; *ap != NULL; ++ap, ++cnt);
		if (cnt > 1) {
			(void)snprintf(p, ep - p, "%d files to edit", cnt);
			p += strlen(p);
			*p++ = ':';
			*p++ = ' ';
		}
		F_CLR(sp, SC_STATUS_CNT);
	}

	/*
	 * See nvi/exf.c:file_init() for a description of how and when the
	 * read-only bit is set.
	 *
	 * !!!
	 * The historic display for "name changed" was "[Not edited]".
	 */
	needsep = 0;
	if (F_ISSET(sp->frp, FR_NEWFILE)) {
		F_CLR(sp->frp, FR_NEWFILE);
		len = strlen("new file");
		memcpy(p, "new file", len);
		p += len;
		needsep = 1;
	} else {
		if (F_ISSET(sp->frp, FR_NAMECHANGE)) {
			len = strlen("name changed");
			memcpy(p, "name changed", len);
			p += len;
			needsep = 1;
		}
		if (needsep) {
			*p++ = ',';
			*p++ = ' ';
		}
		t = (F_ISSET(sp->ep, F_MODIFIED)) ? "modified" : "unmodified";
		len = strlen(t);
		memcpy(p, t, len);
		p += len;
		needsep = 1;
	}
	if (F_ISSET(sp->frp, FR_UNLOCKED)) {
		if (needsep) {
			*p++ = ',';
			*p++ = ' ';
		}
		len = strlen("UNLOCKED");
		memcpy(p, "UNLOCKED", len);
		p += len;
		needsep = 1;
	}
	if (O_ISSET(sp, O_READONLY)) {
		if (needsep) {
			*p++ = ',';
			*p++ = ' ';
		}
		len = strlen("readonly");
		memcpy(p, "readonly", len);
		p += len;
		needsep = 1;
	}
	if (needsep) {
		*p++ = ':';
		*p++ = ' ';
	}
	if (LF_ISSET(MSTAT_SHOWLAST)) {
		if (db_last(sp, &last))
			return;
		if (last == 0) {
			len = strlen("emptry file");
			memcpy(p, "empty file", len);
			p += len;
		} else {
			(void)snprintf(p, ep - p, "line %lu of %lu [%lu%%]",
			    (unsigned long)lno, (unsigned long)last,
			    (unsigned long)(lno * 100) / last);
			p += strlen(p);
		}
	} else {
		(void)snprintf(p, ep - p, "line %lu", (unsigned long)lno);
		p += strlen(p);
	}
#ifdef DEBUG
	(void)snprintf(p, ep - p, " (pid %ld)", (long)getpid());
	p += strlen(p);
#endif
	*p++ = '\n';
	len = p - bp;

	/*
	 * There's a nasty problem with long path names.  Tags files
	 * can result in long paths and vi will request a continuation key from
	 * the user as soon as it starts the screen.  Unfortunately, the user
	 * has already typed ahead, and chaos results.  If we assume that the
	 * characters in the filenames and informational messages only take a
	 * single screen column each, we can trim the filename.
	 *
	 * XXX
	 * Status lines get put up at fairly awkward times.  For example, when
	 * you do a filter read (e.g., :read ! echo foo) in the top screen of a
	 * split screen, we have to repaint the status lines for all the screens
	 * below the top screen.  We don't want users having to enter continue
	 * characters for those screens.  Make it really hard to screw this up.
	 */
	s = bp;
	if (LF_ISSET(MSTAT_TRUNCATE) && len > sp->cols) {
		for (; s < np && (*s != '/' || (p - s) > sp->cols - 3); ++s);
		if (s == np) {
			s = p - (sp->cols - 5);
			*--s = ' ';
		}
		*--s = '.';
		*--s = '.';
		*--s = '.';
		len = p - s;
	}

	/* Flush any waiting ex messages. */
	(void)ex_fflush(sp);

	sp->gp->scr_msg(sp, M_INFO, s, len);

	FREE_SPACE(sp, bp, blen);
alloc_err:
	return;
}

/*
 * msg_cont --
 *	Return common continuation messages.
 *
 * PUBLIC: const char *msg_cmsg(SCR *, cmsg_t, size_t *);
 */
const char *
msg_cmsg(SCR *sp, cmsg_t which, size_t *lenp)
{
	const char *s;
	switch (which) {
	case CMSG_CONF:
		s = "confirm? [ynq]";
		break;
	case CMSG_CONT:
		s = "Press any key to continue: ";
		break;
	case CMSG_CONT_EX:
		s = "Press any key to continue [: to enter more ex commands]: ";
		break;
	case CMSG_CONT_R:
		s = "Press Enter to continue: ";
		break;
	case CMSG_CONT_S:
		s = " cont?";
		break;
	case CMSG_CONT_Q:
		s = "Press any key to continue [q to quit]: ";
		break;
	default:
		abort();
	}
	*lenp = strlen(s);
	return s;
}

/*
 * msg_print --
 *	Return a printable version of a string, in allocated memory.
 *
 * PUBLIC: char *msg_print(SCR *, const char *, int *);
 */
char *
msg_print(SCR *sp, const char *s, int *needfree)
{
	size_t blen, nlen;
	const char *cp;
	char *bp, *ep, *p, *t;

	*needfree = 0;

	for (cp = s; *cp != '\0'; ++cp)
		if (!isprint(*cp))
			break;
	if (*cp == '\0')
		return ((char *)s);	/* SAFE: needfree set to 0. */

	nlen = 0;
	if (0) {
retry:		if (sp == NULL)
			free(bp);
		else
			FREE_SPACE(sp, bp, blen);
		*needfree = 0;
	}
	nlen += 256;
	if (sp == NULL) {
		if ((bp = malloc(nlen)) == NULL)
			goto alloc_err;
		blen = 0;
	} else
		GET_SPACE_GOTO(sp, bp, blen, nlen);
	if (0) {
alloc_err:	return ("");
	}
	*needfree = 1;

	for (p = bp, ep = (bp + blen) - 1, cp = s; *cp != '\0' && p < ep; ++cp)
		for (t = KEY_NAME(sp, *cp); *t != '\0' && p < ep; *p++ = *t++);
	if (p == ep)
		goto retry;
	*p = '\0';
	return (bp);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: msg.c,v 1.27 2016/12/18 18:28:39 krw Exp $ */
2
3			/*-
4			* Copyright (c) 1991, 1993, 1994
5			* The Regents of the University of California. All rights reserved.
6			* Copyright (c) 1991, 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/queue.h>
15			#include <sys/stat.h>
16			#include <sys/time.h>
17
18			#include <bitstring.h>
19			#include <ctype.h>
20			#include <errno.h>
21			#include <fcntl.h>
22			#include <limits.h>
23			#include <stdarg.h>
24			#include <stdio.h>
25			#include <stdlib.h>
26			#include <string.h>
27			#include <unistd.h>
28
29			#include "common.h"
30			#include "../vi/vi.h"
31
32			/*
33			* msgq --
34			* Display a message.
35			*
36			* PUBLIC: void msgq(SCR , mtype_t, const char , ...);
37			*/
38			void
39			msgq(SCR sp, mtype_t mt, const char fmt, ...)
40			{
41			static int reenter; /* STATIC: Re-entrancy check. */
42			GS *gp;
43			size_t blen, len, mlen, nlen;
44			const char *p;
45			char bp, mp;
46			va_list ap;
47
48			/*
49			* !!!
50			* It's possible to enter msg when there's no screen to hold the
51			* message. If sp is NULL, ignore the special cases and put the
52			* message out to stderr.
53			*/
54			if (sp == NULL) {
55			gp = NULL;
56			if (mt == M_BERR)
57			mt = M_ERR;
58			else if (mt == M_VINFO)
59			mt = M_INFO;
60			} else {
61			gp = sp->gp;
62			switch (mt) {
63			case M_BERR:
64			if (F_ISSET(sp, SC_VI) && !O_ISSET(sp, O_VERBOSE)) {
65			F_SET(gp, G_BELLSCHED);
66			return;
67			}
68			mt = M_ERR;
69			break;
70			case M_VINFO:
71			if (!O_ISSET(sp, O_VERBOSE))
72			return;
73			mt = M_INFO;
74			/* FALLTHROUGH */
75			case M_INFO:
76			if (F_ISSET(sp, SC_EX_SILENT))
77			return;
78			break;
79			case M_ERR:
80			case M_SYSERR:
81			break;
82			default:
83			abort();
84			}
85			}
86
87			/*
88			* It's possible to reenter msg when it allocates space. We're
89			* probably dead anyway, but there's no reason to drop core.
90			*
91			* XXX
92			* Yes, there's a race, but it should only be two instructions.
93			*/
94			if (reenter++)
95			return;
96
97			/* Get space for the message. */
98			nlen = 1024;
99			if (0) {
100			retry: FREE_SPACE(sp, bp, blen);
101			nlen *= 2;
102			}
103			bp = NULL;
104			blen = 0;
105			GET_SPACE_GOTO(sp, bp, blen, nlen);
106
107			/*
108			* Error prefix.
109			*
110			* mp: pointer to the current next character to be written
111			* mlen: length of the already written characters
112			* blen: total length of the buffer
113			*/
114			#define REM (blen - mlen)
115			mp = bp;
116			mlen = 0;
117			if (mt == M_SYSERR) {
118			p = "Error: ";
119			len = strlen(p);
120			if (REM < len)
121			goto retry;
122			memcpy(mp, p, len);
123			mp += len;
124			mlen += len;
125			}
126
127			/*
128			* If we're running an ex command that the user didn't enter, display
129			* the file name and line number prefix.
130			*/
131			if ((mt == M_ERR \|\| mt == M_SYSERR) &&
132			sp != NULL && gp != NULL && gp->if_name != NULL) {
133			for (p = gp->if_name; *p != '\0'; ++p) {
134			len = snprintf(mp, REM, "%s", KEY_NAME(sp, *p));
135			mp += len;
136			if ((mlen += len) > blen)
137			goto retry;
138			}
139			len = snprintf(mp, REM, ", %d: ", gp->if_lno);
140			mp += len;
141			if ((mlen += len) > blen)
142			goto retry;
143			}
144
145			/* If nothing to format, we're done. */
146			if (fmt == NULL) {
147			len = 0;
148			goto nofmt;
149			}
150
151			/* Format the arguments into the string. */
152			va_start(ap, fmt);
153			len = vsnprintf(mp, REM, fmt, ap);
154			va_end(ap);
155			if (len >= nlen)
156			goto retry;
157
158			nofmt: mp += len;
159			if ((mlen += len) > blen)
160			goto retry;
161			if (mt == M_SYSERR) {
162			len = snprintf(mp, REM, ": %s", strerror(errno));
163			mp += len;
164			if ((mlen += len) > blen)
165			goto retry;
166			mt = M_ERR;
167			}
168
169			/* Add trailing newline. */
170			if ((mlen += 1) > blen)
171			goto retry;
172			*mp = '\n';
173
174			if (sp != NULL)
175			(void)ex_fflush(sp);
176			if (gp != NULL)
177			gp->scr_msg(sp, mt, bp, mlen);
178			else
179			(void)fprintf(stderr, "%.*s", (int)mlen, bp);
180
181			/* Cleanup. */
182			FREE_SPACE(sp, bp, blen);
183			alloc_err:
184			reenter = 0;
185			}
186
187			/*
188			* msgq_str --
189			* Display a message with an embedded string.
190			*
191			* PUBLIC: void msgq_str(SCR , mtype_t, char , char *);
192			*/
193			void
194			msgq_str(SCR sp, mtype_t mtype, char str, char *fmt)
195			{
196			int nf, sv_errno;
197			char *p;
198
199			if (str == NULL) {
200			msgq(sp, mtype, fmt);
201			return;
202			}
203
204			sv_errno = errno;
205			p = msg_print(sp, str, &nf);
206			errno = sv_errno;
207			msgq(sp, mtype, fmt, p);
208			if (nf)
209			FREE_SPACE(sp, p, 0);
210			}
211
212			/*
213			* mod_rpt --
214			* Report on the lines that changed.
215			*
216			* !!!
217			* Historic vi documentation (USD:15-8) claimed that "The editor will also
218			* always tell you when a change you make affects text which you cannot see."
219			* This wasn't true -- edit a large file and do "100d\|1". We don't implement
220			* this semantic since it requires tracking each line that changes during a
221			* command instead of just keeping count.
222			*
223			* Line counts weren't right in historic vi, either. For example, given the
224			* file:
225			* abc
226			* def
227			* the command 2d}, from the 'b' would report that two lines were deleted,
228			* not one.
229			*
230			* PUBLIC: void mod_rpt(SCR *);
231			*/
232			void
233			mod_rpt(SCR *sp)
234			{
235			static char * const action[] = {
236			"added",
237			"changed",
238			"deleted",
239			"joined",
240			"moved",
241			"shifted",
242			"yanked",
243			};
244			static char * const lines[] = {
245			"line",
246			"lines",
247			};
248			recno_t total;
249			u_long rptval;
250			int first, cnt;
251			size_t blen, len, tlen;
252			const char *t;
253			char * const *ap;
254			char bp, p;
255
256			/* Change reports are turned off in batch mode. */
257			if (F_ISSET(sp, SC_EX_SILENT))
258			return;
259
260			/* Reset changing line number. */
261			sp->rptlchange = OOBLNO;
262
263			/*
264			* Don't build a message if not enough changed.
265			*
266			* !!!
267			* And now, a vi clone test. Historically, vi reported if the number
268			* of changed lines was > than the value, not >=, unless it was a yank
269			* command, which used >=. No lie. Furthermore, an action was never
270			* reported for a single line action. This is consistent for actions
271			* other than yank, but yank didn't report single line actions even if
272			* the report edit option was set to 1. In addition, setting report to
273			* 0 in the 4BSD historic vi was equivalent to setting it to 1, for an
274			* unknown reason (this bug was fixed in System III/V at some point).
275			* I got complaints, so nvi conforms to System III/V historic practice
276			* except that we report a yank of 1 line if report is set to 1.
277			*/
278			#define ARSIZE(a) sizeof(a) / sizeof (*a)
279			#define MAXNUM 25
280			rptval = O_VAL(sp, O_REPORT);
281			for (cnt = 0, total = 0; cnt < ARSIZE(action); ++cnt)
282			total += sp->rptlines[cnt];
283			if (total == 0)
284			return;
285			if (total <= rptval && sp->rptlines[L_YANKED] < rptval) {
286			for (cnt = 0; cnt < ARSIZE(action); ++cnt)
287			sp->rptlines[cnt] = 0;
288			return;
289			}
290
291			/* Build and display the message. */
292			GET_SPACE_GOTO(sp, bp, blen, sizeof(action) * MAXNUM + 1);
293			for (p = bp, first = 1, tlen = 0,
294			ap = action, cnt = 0; cnt < ARSIZE(action); ++ap, ++cnt)
295			if (sp->rptlines[cnt] != 0) {
296			if (first)
297			first = 0;
298			else {
299			*p++ = ';';
300			*p++ = ' ';
301			tlen += 2;
302			}
303			len = snprintf(p, MAXNUM, "%u ", sp->rptlines[cnt]);
304			p += len;
305			tlen += len;
306			t = lines[sp->rptlines[cnt] == 1 ? 0 : 1];
307			len = strlen(t);
308			memcpy(p, t, len);
309			p += len;
310			tlen += len;
311			*p++ = ' ';
312			++tlen;
313			len = strlen(*ap);
314			memcpy(p, *ap, len);
315			p += len;
316			tlen += len;
317			sp->rptlines[cnt] = 0;
318			}
319
320			/* Add trailing newline. */
321			*p = '\n';
322			++tlen;
323
324			(void)ex_fflush(sp);
325			sp->gp->scr_msg(sp, M_INFO, bp, tlen);
326
327			FREE_SPACE(sp, bp, blen);
328			alloc_err:
329			return;
330
331			#undef ARSIZE
332			#undef MAXNUM
333			}
334
335			/*
336			* msgq_status --
337			* Report on the file's status.
338			*
339			* PUBLIC: void msgq_status(SCR *, recno_t, u_int);
340			*/
341			void
342			msgq_status(SCR *sp, recno_t lno, u_int flags)
343			{
344			recno_t last;
345			size_t blen, len;
346			int cnt, needsep;
347			const char *t;
348			char *ap, bp, np, p, s, ep;
349
350			/* Get sufficient memory. */
351			len = strlen(sp->frp->name);
352			GET_SPACE_GOTO(sp, bp, blen, len * MAX_CHARACTER_COLUMNS + 128);
353			p = bp;
354			ep = bp + blen;
355
356			/* Copy in the filename. */
357			for (t = sp->frp->name; *t != '\0'; ++t) {
358			len = KEY_LEN(sp, *t);
359			memcpy(p, KEY_NAME(sp, *t), len);
360			p += len;
361			}
362			np = p;
363			*p++ = ':';
364			*p++ = ' ';
365
366			/* Copy in the argument count. */
367			if (F_ISSET(sp, SC_STATUS_CNT) && sp->argv != NULL) {
368			for (cnt = 0, ap = sp->argv; *ap != NULL; ++ap, ++cnt);
369			if (cnt > 1) {
370			(void)snprintf(p, ep - p, "%d files to edit", cnt);
371			p += strlen(p);
372			*p++ = ':';
373			*p++ = ' ';
374			}
375			F_CLR(sp, SC_STATUS_CNT);
376			}
377
378			/*
379			* See nvi/exf.c:file_init() for a description of how and when the
380			* read-only bit is set.
381			*
382			* !!!
383			* The historic display for "name changed" was "[Not edited]".
384			*/
385			needsep = 0;
386			if (F_ISSET(sp->frp, FR_NEWFILE)) {
387			F_CLR(sp->frp, FR_NEWFILE);
388			len = strlen("new file");
389			memcpy(p, "new file", len);
390			p += len;
391			needsep = 1;
392			} else {
393			if (F_ISSET(sp->frp, FR_NAMECHANGE)) {
394			len = strlen("name changed");
395			memcpy(p, "name changed", len);
396			p += len;
397			needsep = 1;
398			}
399			if (needsep) {
400			*p++ = ',';
401			*p++ = ' ';
402			}
403			t = (F_ISSET(sp->ep, F_MODIFIED)) ? "modified" : "unmodified";
404			len = strlen(t);
405			memcpy(p, t, len);
406			p += len;
407			needsep = 1;
408			}
409			if (F_ISSET(sp->frp, FR_UNLOCKED)) {
410			if (needsep) {
411			*p++ = ',';
412			*p++ = ' ';
413			}
414			len = strlen("UNLOCKED");
415			memcpy(p, "UNLOCKED", len);
416			p += len;
417			needsep = 1;
418			}
419			if (O_ISSET(sp, O_READONLY)) {
420			if (needsep) {
421			*p++ = ',';
422			*p++ = ' ';
423			}
424			len = strlen("readonly");
425			memcpy(p, "readonly", len);
426			p += len;
427			needsep = 1;
428			}
429			if (needsep) {
430			*p++ = ':';
431			*p++ = ' ';
432			}
433			if (LF_ISSET(MSTAT_SHOWLAST)) {
434			if (db_last(sp, &last))
435			return;
436			if (last == 0) {
437			len = strlen("emptry file");
438			memcpy(p, "empty file", len);
439			p += len;
440			} else {
441			(void)snprintf(p, ep - p, "line %lu of %lu [%lu%%]",
442			(unsigned long)lno, (unsigned long)last,
443			(unsigned long)(lno * 100) / last);
444			p += strlen(p);
445			}
446			} else {
447			(void)snprintf(p, ep - p, "line %lu", (unsigned long)lno);
448			p += strlen(p);
449			}
450			#ifdef DEBUG
451			(void)snprintf(p, ep - p, " (pid %ld)", (long)getpid());
452			p += strlen(p);
453			#endif
454			*p++ = '\n';
455			len = p - bp;
456
457			/*
458			* There's a nasty problem with long path names. Tags files
459			* can result in long paths and vi will request a continuation key from
460			* the user as soon as it starts the screen. Unfortunately, the user
461			* has already typed ahead, and chaos results. If we assume that the
462			* characters in the filenames and informational messages only take a
463			* single screen column each, we can trim the filename.
464			*
465			* XXX
466			* Status lines get put up at fairly awkward times. For example, when
467			* you do a filter read (e.g., :read ! echo foo) in the top screen of a
468			* split screen, we have to repaint the status lines for all the screens
469			* below the top screen. We don't want users having to enter continue
470			* characters for those screens. Make it really hard to screw this up.
471			*/
472			s = bp;
473			if (LF_ISSET(MSTAT_TRUNCATE) && len > sp->cols) {
474			for (; s < np && (*s != '/' \|\| (p - s) > sp->cols - 3); ++s);
475			if (s == np) {
476			s = p - (sp->cols - 5);
477			*--s = ' ';
478			}
479			*--s = '.';
480			*--s = '.';
481			*--s = '.';
482			len = p - s;
483			}
484
485			/* Flush any waiting ex messages. */
486			(void)ex_fflush(sp);
487
488			sp->gp->scr_msg(sp, M_INFO, s, len);
489
490			FREE_SPACE(sp, bp, blen);
491			alloc_err:
492			return;
493			}
494
495			/*
496			* msg_cont --
497			* Return common continuation messages.
498			*
499			* PUBLIC: const char msg_cmsg(SCR , cmsg_t, size_t *);
500			*/
501			const char *
502			msg_cmsg(SCR sp, cmsg_t which, size_t lenp)
503			{
504			const char *s;
505			switch (which) {
506			case CMSG_CONF:
507			s = "confirm? [ynq]";
508			break;
509			case CMSG_CONT:
510			s = "Press any key to continue: ";
511			break;
512			case CMSG_CONT_EX:
513			s = "Press any key to continue [: to enter more ex commands]: ";
514			break;
515			case CMSG_CONT_R:
516			s = "Press Enter to continue: ";
517			break;
518			case CMSG_CONT_S:
519			s = " cont?";
520			break;
521			case CMSG_CONT_Q:
522			s = "Press any key to continue [q to quit]: ";
523			break;
524			default:
525			abort();
526			}
527			*lenp = strlen(s);
528			return s;
529			}
530
531			/*
532			* msg_print --
533			* Return a printable version of a string, in allocated memory.
534			*
535			* PUBLIC: char msg_print(SCR , const char , int );
536			*/
537			char *
538			msg_print(SCR sp, const char s, int *needfree)
539			{
540			size_t blen, nlen;
541			const char *cp;
542			char bp, ep, p, t;
543
544			*needfree = 0;
545
546			for (cp = s; *cp != '\0'; ++cp)
547			if (!isprint(*cp))
548			break;
549			if (*cp == '\0')
550			return ((char )s); / SAFE: needfree set to 0. */
551
552			nlen = 0;
553			if (0) {
554			retry: if (sp == NULL)
555			free(bp);
556			else
557			FREE_SPACE(sp, bp, blen);
558			*needfree = 0;
559			}
560			nlen += 256;
561			if (sp == NULL) {
562			if ((bp = malloc(nlen)) == NULL)
563			goto alloc_err;
564			blen = 0;
565			} else
566			GET_SPACE_GOTO(sp, bp, blen, nlen);
567			if (0) {
568			alloc_err: return ("");
569			}
570			*needfree = 1;
571
572			for (p = bp, ep = (bp + blen) - 1, cp = s; *cp != '\0' && p < ep; ++cp)
573			for (t = KEY_NAME(sp, cp); t != '\0' && p < ep; p++ = t++);
574			if (p == ep)
575			goto retry;
576			*p = '\0';
577			return (bp);
578			}