Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libedit/hist.c	Lines:	11	74	14.9 %
Date:	2017-11-13	Branches:	1	58	1.7 %


/*	$OpenBSD: hist.c,v 1.18 2017/04/12 18:24:37 tb Exp $	*/
/*	$NetBSD: hist.c,v 1.28 2016/04/11 00:50:13 christos Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "config.h"

/*
 * hist.c: History access functions
 */
#include <stdlib.h>
#include <string.h>

#include "el.h"

/* hist_init():
 *	Initialization function.
 */
protected int
hist_init(EditLine *el)
{

	el->el_history.fun = NULL;
	el->el_history.ref = NULL;
	el->el_history.buf = reallocarray(NULL, EL_BUFSIZ,
	    sizeof(*el->el_history.buf));
	el->el_history.sz  = EL_BUFSIZ;
	if (el->el_history.buf == NULL)
		return -1;
	el->el_history.last = el->el_history.buf;
	return 0;
}


/* hist_end():
 *	clean up history;
 */
protected void
hist_end(EditLine *el)
{

	free(el->el_history.buf);
	el->el_history.buf = NULL;
}


/* hist_set():
 *	Set new history interface
 */
protected int
hist_set(EditLine *el, hist_fun_t fun, void *ptr)
{

	el->el_history.ref = ptr;
	el->el_history.fun = fun;
	return 0;
}


/* hist_get():
 *	Get a history line and update it in the buffer.
 *	eventno tells us the event to get.
 */
protected el_action_t
hist_get(EditLine *el)
{
	const wchar_t *hp;
	int h;

	if (el->el_history.eventno == 0) {	/* if really the current line */
		(void) wcsncpy(el->el_line.buffer, el->el_history.buf,
		    el->el_history.sz);
		el->el_line.lastchar = el->el_line.buffer +
		    (el->el_history.last - el->el_history.buf);

#ifdef KSHVI
		if (el->el_map.type == MAP_VI)
			el->el_line.cursor = el->el_line.buffer;
		else
#endif /* KSHVI */
			el->el_line.cursor = el->el_line.lastchar;

		return CC_REFRESH;
	}
	if (el->el_history.ref == NULL)
		return CC_ERROR;

	hp = HIST_FIRST(el);

	if (hp == NULL)
		return CC_ERROR;

	for (h = 1; h < el->el_history.eventno; h++)
		if ((hp = HIST_NEXT(el)) == NULL) {
			el->el_history.eventno = h;
			return CC_ERROR;
		}
	(void) wcsncpy(el->el_line.buffer, hp,
			(size_t)(el->el_line.limit - el->el_line.buffer));
	el->el_line.buffer[el->el_line.limit - el->el_line.buffer - 1] = '\0';
	el->el_line.lastchar = el->el_line.buffer + wcslen(el->el_line.buffer);

	if (el->el_line.lastchar > el->el_line.buffer
	    && el->el_line.lastchar[-1] == '\n')
		el->el_line.lastchar--;
	if (el->el_line.lastchar > el->el_line.buffer
	    && el->el_line.lastchar[-1] == ' ')
		el->el_line.lastchar--;
#ifdef KSHVI
	if (el->el_map.type == MAP_VI)
		el->el_line.cursor = el->el_line.buffer;
	else
#endif /* KSHVI */
		el->el_line.cursor = el->el_line.lastchar;

	return CC_REFRESH;
}


/* hist_command()
 *	process a history command
 */
protected int
hist_command(EditLine *el, int argc, const wchar_t **argv)
{
	const wchar_t *str;
	int num;
	HistEvent ev;

	if (el->el_history.ref == NULL)
		return -1;

	if (argc == 1 || wcscmp(argv[1], L"list") == 0) {
		 /* List history entries */

		for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el))
			(void) fprintf(el->el_outfile, "%d %s",
			    el->el_history.ev.num, ct_encode_string(str, &el->el_scratch));
		return 0;
	}

	if (argc != 3)
		return -1;

	num = (int)wcstol(argv[2], NULL, 0);

	if (wcscmp(argv[1], L"size") == 0)
		return history(el->el_history.ref, &ev, H_SETSIZE, num);

	if (wcscmp(argv[1], L"unique") == 0)
		return history(el->el_history.ref, &ev, H_SETUNIQUE, num);

	return -1;
}

/* hist_enlargebuf()
 *	Enlarge history buffer to specified value. Called from el_enlargebufs().
 *	Return 0 for failure, 1 for success.
 */
protected int
/*ARGSUSED*/
hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
{
	wchar_t *newbuf;

	newbuf = recallocarray(el->el_history.buf, oldsz, newsz,
	    sizeof(*newbuf));
	if (!newbuf)
		return 0;

	el->el_history.last = newbuf +
				(el->el_history.last - el->el_history.buf);
	el->el_history.buf = newbuf;
	el->el_history.sz  = newsz;

	return 1;
}

protected wchar_t *
hist_convert(EditLine *el, int fn, void *arg)
{
	HistEventW ev;
	if ((*(el)->el_history.fun)((el)->el_history.ref, &ev, fn, arg) == -1)
		return NULL;
	return ct_decode_string((const char *)(const void *)ev.str,
	    &el->el_scratch);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: hist.c,v 1.18 2017/04/12 18:24:37 tb Exp $ */
2			/* $NetBSD: hist.c,v 1.28 2016/04/11 00:50:13 christos Exp $ */
3
4			/*-
5			* Copyright (c) 1992, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Christos Zoulas of Cornell University.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include "config.h"
37
38			/*
39			* hist.c: History access functions
40			*/
41			#include <stdlib.h>
42			#include <string.h>
43
44			#include "el.h"
45
46			/* hist_init():
47			* Initialization function.
48			*/
49			protected int
50			hist_init(EditLine *el)
51			{
52
53		6	el->el_history.fun = NULL;
54		3	el->el_history.ref = NULL;
55		3	el->el_history.buf = reallocarray(NULL, EL_BUFSIZ,
56			sizeof(*el->el_history.buf));
57		3	el->el_history.sz = EL_BUFSIZ;
58	✗✓	3	if (el->el_history.buf == NULL)
59			return -1;
60		3	el->el_history.last = el->el_history.buf;
61		3	return 0;
62		3	}
63
64
65			/* hist_end():
66			* clean up history;
67			*/
68			protected void
69			hist_end(EditLine *el)
70			{
71
72			free(el->el_history.buf);
73			el->el_history.buf = NULL;
74			}
75
76
77			/* hist_set():
78			* Set new history interface
79			*/
80			protected int
81			hist_set(EditLine el, hist_fun_t fun, void ptr)
82			{
83
84		6	el->el_history.ref = ptr;
85		3	el->el_history.fun = fun;
86		3	return 0;
87			}
88
89
90			/* hist_get():
91			* Get a history line and update it in the buffer.
92			* eventno tells us the event to get.
93			*/
94			protected el_action_t
95			hist_get(EditLine *el)
96			{
97			const wchar_t *hp;
98			int h;
99
100			if (el->el_history.eventno == 0) { /* if really the current line */
101			(void) wcsncpy(el->el_line.buffer, el->el_history.buf,
102			el->el_history.sz);
103			el->el_line.lastchar = el->el_line.buffer +
104			(el->el_history.last - el->el_history.buf);
105
106			#ifdef KSHVI
107			if (el->el_map.type == MAP_VI)
108			el->el_line.cursor = el->el_line.buffer;
109			else
110			#endif /* KSHVI */
111			el->el_line.cursor = el->el_line.lastchar;
112
113			return CC_REFRESH;
114			}
115			if (el->el_history.ref == NULL)
116			return CC_ERROR;
117
118			hp = HIST_FIRST(el);
119
120			if (hp == NULL)
121			return CC_ERROR;
122
123			for (h = 1; h < el->el_history.eventno; h++)
124			if ((hp = HIST_NEXT(el)) == NULL) {
125			el->el_history.eventno = h;
126			return CC_ERROR;
127			}
128			(void) wcsncpy(el->el_line.buffer, hp,
129			(size_t)(el->el_line.limit - el->el_line.buffer));
130			el->el_line.buffer[el->el_line.limit - el->el_line.buffer - 1] = '\0';
131			el->el_line.lastchar = el->el_line.buffer + wcslen(el->el_line.buffer);
132
133			if (el->el_line.lastchar > el->el_line.buffer
134			&& el->el_line.lastchar[-1] == '\n')
135			el->el_line.lastchar--;
136			if (el->el_line.lastchar > el->el_line.buffer
137			&& el->el_line.lastchar[-1] == ' ')
138			el->el_line.lastchar--;
139			#ifdef KSHVI
140			if (el->el_map.type == MAP_VI)
141			el->el_line.cursor = el->el_line.buffer;
142			else
143			#endif /* KSHVI */
144			el->el_line.cursor = el->el_line.lastchar;
145
146			return CC_REFRESH;
147			}
148
149
150			/* hist_command()
151			* process a history command
152			*/
153			protected int
154			hist_command(EditLine el, int argc, const wchar_t *argv)
155			{
156			const wchar_t *str;
157			int num;
158			HistEvent ev;
159
160			if (el->el_history.ref == NULL)
161			return -1;
162
163			if (argc == 1 \|\| wcscmp(argv[1], L"list") == 0) {
164			/* List history entries */
165
166			for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el))
167			(void) fprintf(el->el_outfile, "%d %s",
168			el->el_history.ev.num, ct_encode_string(str, &el->el_scratch));
169			return 0;
170			}
171
172			if (argc != 3)
173			return -1;
174
175			num = (int)wcstol(argv[2], NULL, 0);
176
177			if (wcscmp(argv[1], L"size") == 0)
178			return history(el->el_history.ref, &ev, H_SETSIZE, num);
179
180			if (wcscmp(argv[1], L"unique") == 0)
181			return history(el->el_history.ref, &ev, H_SETUNIQUE, num);
182
183			return -1;
184			}
185
186			/* hist_enlargebuf()
187			* Enlarge history buffer to specified value. Called from el_enlargebufs().
188			* Return 0 for failure, 1 for success.
189			*/
190			protected int
191			/ARGSUSED/
192			hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
193			{
194			wchar_t *newbuf;
195
196			newbuf = recallocarray(el->el_history.buf, oldsz, newsz,
197			sizeof(*newbuf));
198			if (!newbuf)
199			return 0;
200
201			el->el_history.last = newbuf +
202			(el->el_history.last - el->el_history.buf);
203			el->el_history.buf = newbuf;
204			el->el_history.sz = newsz;
205
206			return 1;
207			}
208
209			protected wchar_t *
210			hist_convert(EditLine el, int fn, void arg)
211			{
212			HistEventW ev;
213			if ((*(el)->el_history.fun)((el)->el_history.ref, &ev, fn, arg) == -1)
214			return NULL;
215			return ct_decode_string((const char )(const void )ev.str,
216			&el->el_scratch);
217			}