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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/mg/help.c	Lines:	0	114	0.0 %
Date:	2017-11-07	Branches:	0	77	0.0 %


/*	$OpenBSD: help.c,v 1.35 2015/03/19 21:22:15 bcallah Exp $	*/

/* This file is in the public domain. */

/*
 * Help functions for Mg 2
 */

#include <sys/queue.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>

#include "def.h"
#include "funmap.h"
#include "kbd.h"
#include "key.h"
#include "macro.h"

static int	showall(struct buffer *, KEYMAP *, char *);
static int	findbind(KEYMAP *, PF, char *, size_t);

/*
 * Read a key from the keyboard, and look it up in the keymap.
 * Display the name of the function currently bound to the key.
 */
/* ARGSUSED */
int
desckey(int f, int n)
{
	KEYMAP	*curmap;
	PF	 funct;
	int	 c, m, i, num;
	char	*pep;
	char	 dprompt[80];

	if (inmacro)
		return (TRUE);	/* ignore inside keyboard macro */

	num = strlcpy(dprompt, "Describe key briefly: ", sizeof(dprompt));
	if (num >= sizeof(dprompt))
		num = sizeof(dprompt) - 1;
	pep = dprompt + num;
	key.k_count = 0;
	m = curbp->b_nmodes;
	curmap = curbp->b_modes[m]->p_map;
	for (;;) {
		for (;;) {
			ewprintf("%s", dprompt);
			pep[-1] = ' ';
			pep = getkeyname(pep, sizeof(dprompt) - (pep - dprompt),
			    key.k_chars[key.k_count++] = c = getkey(FALSE));
			if ((funct = doscan(curmap, c, &curmap)) != NULL)
				break;
			*pep++ = '-';
			*pep = '\0';
		}
		if (funct != rescan)
			break;
		if (ISUPPER(key.k_chars[key.k_count - 1])) {
			funct = doscan(curmap,
			    TOLOWER(key.k_chars[key.k_count - 1]), &curmap);
			if (funct == NULL) {
				*pep++ = '-';
				*pep = '\0';
				continue;
			}
			if (funct != rescan)
				break;
		}
nextmode:
		if (--m < 0)
			break;
		curmap = curbp->b_modes[m]->p_map;
		for (i = 0; i < key.k_count; i++) {
			funct = doscan(curmap, key.k_chars[i], &curmap);
			if (funct != NULL) {
				if (i == key.k_count - 1 && funct != rescan)
					goto found;
				funct = rescan;
				goto nextmode;
			}
		}
		*pep++ = '-';
		*pep = '\0';
	}
found:
	if (funct == rescan || funct == selfinsert)
		ewprintf("%k is not bound to any function");
	else if ((pep = (char *)function_name(funct)) != NULL)
		ewprintf("%k runs the command %s", pep);
	else
		ewprintf("%k is bound to an unnamed function");
	return (TRUE);
}

/*
 * This function creates a table, listing all of the command
 * keys and their current bindings, and stores the table in the
 * *help* pop-up buffer.  This lets Mg produce it's own wall chart.
 */
/* ARGSUSED */
int
wallchart(int f, int n)
{
	int		 m;
	struct buffer		*bp;

	bp = bfind("*help*", TRUE);
	if (bclear(bp) != TRUE)
		/* clear it out */
		return (FALSE);
	bp->b_flag |= BFREADONLY;
	for (m = curbp->b_nmodes; m > 0; m--) {
		if ((addlinef(bp, "Local keybindings for mode %s:",
				curbp->b_modes[m]->p_name) == FALSE) ||
		    (showall(bp, curbp->b_modes[m]->p_map, "") == FALSE) ||
		    (addline(bp, "") == FALSE))
			return (FALSE);
	}
	if ((addline(bp, "Global bindings:") == FALSE) ||
	    (showall(bp, fundamental_map, "") == FALSE))
		return (FALSE);
	return (popbuftop(bp, WNONE));
}

static int
showall(struct buffer *bp, KEYMAP *map, char *prefix)
{
	KEYMAP	*newmap;
	char	 buf[80], keybuf[16];
	PF	 fun;
	int	 c;

	if (addline(bp, "") == FALSE)
		return (FALSE);

	/* XXX - 256 ? */
	for (c = 0; c < 256; c++) {
		fun = doscan(map, c, &newmap);
		if (fun == rescan || fun == selfinsert)
			continue;
		getkeyname(buf, sizeof(buf), c);
		(void)snprintf(keybuf, sizeof(keybuf), "%s%s ", prefix, buf);
		if (fun == NULL) {
			if (showall(bp, newmap, keybuf) == FALSE)
				return (FALSE);
		} else {
			if (addlinef(bp, "%-16s%s", keybuf,
				    function_name(fun)) == FALSE)
				return (FALSE);
		}
	}
	return (TRUE);
}

int
help_help(int f, int n)
{
	KEYMAP	*kp;
	PF	 funct;

	if ((kp = name_map("help")) == NULL)
		return (FALSE);
	ewprintf("a b c: ");
	do {
		funct = doscan(kp, getkey(FALSE), NULL);
	} while (funct == NULL || funct == help_help);

	if (macrodef && macrocount < MAXMACRO)
		macro[macrocount - 1].m_funct = funct;

	return ((*funct)(f, n));
}

/* ARGSUSED */
int
apropos_command(int f, int n)
{
	struct buffer		*bp;
	struct list		*fnames, *el;
	char		 string[32];

	if (eread("apropos: ", string, sizeof(string), EFNUL | EFNEW) == NULL)
		return (ABORT);
	/* FALSE means we got a 0 character string, which is fine */
	bp = bfind("*help*", TRUE);
	if (bclear(bp) == FALSE)
		return (FALSE);

	fnames = complete_function_list("");
	for (el = fnames; el != NULL; el = el->l_next) {
		char buf[32];

		if (strstr(el->l_name, string) == NULL)
			continue;

		buf[0] = '\0';
		findbind(fundamental_map, name_function(el->l_name),
		    buf, sizeof(buf));

		if (addlinef(bp, "%-32s%s", el->l_name,  buf) == FALSE) {
			free_file_list(fnames);
			return (FALSE);
		}
	}
	free_file_list(fnames);
	return (popbuftop(bp, WNONE));
}

static int
findbind(KEYMAP *map, PF fun, char *buf, size_t len)
{
	KEYMAP	*newmap;
	PF	 nfun;
	char	 buf2[16], keybuf[16];
	int	 c;

	/* XXX - 256 ? */
	for (c = 0; c < 256; c++) {
		nfun = doscan(map, c, &newmap);
		if (nfun == fun) {
			getkeyname(buf, len, c);
			return (TRUE);
		}
		if (nfun == NULL) {
			if (findbind(newmap, fun, buf2, sizeof(buf2)) == TRUE) {
				getkeyname(keybuf, sizeof(keybuf), c);
				(void)snprintf(buf, len, "%s %s", keybuf, buf2);
				return (TRUE);
			}
		}
	}
	return (FALSE);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: help.c,v 1.35 2015/03/19 21:22:15 bcallah Exp $ */
2
3			/* This file is in the public domain. */
4
5			/*
6			* Help functions for Mg 2
7			*/
8
9			#include <sys/queue.h>
10			#include <signal.h>
11			#include <stdio.h>
12			#include <string.h>
13
14			#include "def.h"
15			#include "funmap.h"
16			#include "kbd.h"
17			#include "key.h"
18			#include "macro.h"
19
20			static int showall(struct buffer , KEYMAP , char *);
21			static int findbind(KEYMAP , PF, char , size_t);
22
23			/*
24			* Read a key from the keyboard, and look it up in the keymap.
25			* Display the name of the function currently bound to the key.
26			*/
27			/* ARGSUSED */
28			int
29			desckey(int f, int n)
30			{
31			KEYMAP *curmap;
32			PF funct;
33			int c, m, i, num;
34			char *pep;
35			char dprompt[80];
36
37			if (inmacro)
38			return (TRUE); /* ignore inside keyboard macro */
39
40			num = strlcpy(dprompt, "Describe key briefly: ", sizeof(dprompt));
41			if (num >= sizeof(dprompt))
42			num = sizeof(dprompt) - 1;
43			pep = dprompt + num;
44			key.k_count = 0;
45			m = curbp->b_nmodes;
46			curmap = curbp->b_modes[m]->p_map;
47			for (;;) {
48			for (;;) {
49			ewprintf("%s", dprompt);
50			pep[-1] = ' ';
51			pep = getkeyname(pep, sizeof(dprompt) - (pep - dprompt),
52			key.k_chars[key.k_count++] = c = getkey(FALSE));
53			if ((funct = doscan(curmap, c, &curmap)) != NULL)
54			break;
55			*pep++ = '-';
56			*pep = '\0';
57			}
58			if (funct != rescan)
59			break;
60			if (ISUPPER(key.k_chars[key.k_count - 1])) {
61			funct = doscan(curmap,
62			TOLOWER(key.k_chars[key.k_count - 1]), &curmap);
63			if (funct == NULL) {
64			*pep++ = '-';
65			*pep = '\0';
66			continue;
67			}
68			if (funct != rescan)
69			break;
70			}
71			nextmode:
72			if (--m < 0)
73			break;
74			curmap = curbp->b_modes[m]->p_map;
75			for (i = 0; i < key.k_count; i++) {
76			funct = doscan(curmap, key.k_chars[i], &curmap);
77			if (funct != NULL) {
78			if (i == key.k_count - 1 && funct != rescan)
79			goto found;
80			funct = rescan;
81			goto nextmode;
82			}
83			}
84			*pep++ = '-';
85			*pep = '\0';
86			}
87			found:
88			if (funct == rescan \|\| funct == selfinsert)
89			ewprintf("%k is not bound to any function");
90			else if ((pep = (char *)function_name(funct)) != NULL)
91			ewprintf("%k runs the command %s", pep);
92			else
93			ewprintf("%k is bound to an unnamed function");
94			return (TRUE);
95			}
96
97			/*
98			* This function creates a table, listing all of the command
99			* keys and their current bindings, and stores the table in the
100			* help pop-up buffer. This lets Mg produce it's own wall chart.
101			*/
102			/* ARGSUSED */
103			int
104			wallchart(int f, int n)
105			{
106			int m;
107			struct buffer *bp;
108
109			bp = bfind("help", TRUE);
110			if (bclear(bp) != TRUE)
111			/* clear it out */
112			return (FALSE);
113			bp->b_flag \|= BFREADONLY;
114			for (m = curbp->b_nmodes; m > 0; m--) {
115			if ((addlinef(bp, "Local keybindings for mode %s:",
116			curbp->b_modes[m]->p_name) == FALSE) \|\|
117			(showall(bp, curbp->b_modes[m]->p_map, "") == FALSE) \|\|
118			(addline(bp, "") == FALSE))
119			return (FALSE);
120			}
121			if ((addline(bp, "Global bindings:") == FALSE) \|\|
122			(showall(bp, fundamental_map, "") == FALSE))
123			return (FALSE);
124			return (popbuftop(bp, WNONE));
125			}
126
127			static int
128			showall(struct buffer bp, KEYMAP map, char *prefix)
129			{
130			KEYMAP *newmap;
131			char buf[80], keybuf[16];
132			PF fun;
133			int c;
134
135			if (addline(bp, "") == FALSE)
136			return (FALSE);
137
138			/* XXX - 256 ? */
139			for (c = 0; c < 256; c++) {
140			fun = doscan(map, c, &newmap);
141			if (fun == rescan \|\| fun == selfinsert)
142			continue;
143			getkeyname(buf, sizeof(buf), c);
144			(void)snprintf(keybuf, sizeof(keybuf), "%s%s ", prefix, buf);
145			if (fun == NULL) {
146			if (showall(bp, newmap, keybuf) == FALSE)
147			return (FALSE);
148			} else {
149			if (addlinef(bp, "%-16s%s", keybuf,
150			function_name(fun)) == FALSE)
151			return (FALSE);
152			}
153			}
154			return (TRUE);
155			}
156
157			int
158			help_help(int f, int n)
159			{
160			KEYMAP *kp;
161			PF funct;
162
163			if ((kp = name_map("help")) == NULL)
164			return (FALSE);
165			ewprintf("a b c: ");
166			do {
167			funct = doscan(kp, getkey(FALSE), NULL);
168			} while (funct == NULL \|\| funct == help_help);
169
170			if (macrodef && macrocount < MAXMACRO)
171			macro[macrocount - 1].m_funct = funct;
172
173			return ((*funct)(f, n));
174			}
175
176			/* ARGSUSED */
177			int
178			apropos_command(int f, int n)
179			{
180			struct buffer *bp;
181			struct list fnames, el;
182			char string[32];
183
184			if (eread("apropos: ", string, sizeof(string), EFNUL \| EFNEW) == NULL)
185			return (ABORT);
186			/* FALSE means we got a 0 character string, which is fine */
187			bp = bfind("help", TRUE);
188			if (bclear(bp) == FALSE)
189			return (FALSE);
190
191			fnames = complete_function_list("");
192			for (el = fnames; el != NULL; el = el->l_next) {
193			char buf[32];
194
195			if (strstr(el->l_name, string) == NULL)
196			continue;
197
198			buf[0] = '\0';
199			findbind(fundamental_map, name_function(el->l_name),
200			buf, sizeof(buf));
201
202			if (addlinef(bp, "%-32s%s", el->l_name, buf) == FALSE) {
203			free_file_list(fnames);
204			return (FALSE);
205			}
206			}
207			free_file_list(fnames);
208			return (popbuftop(bp, WNONE));
209			}
210
211			static int
212			findbind(KEYMAP map, PF fun, char buf, size_t len)
213			{
214			KEYMAP *newmap;
215			PF nfun;
216			char buf2[16], keybuf[16];
217			int c;
218
219			/* XXX - 256 ? */
220			for (c = 0; c < 256; c++) {
221			nfun = doscan(map, c, &newmap);
222			if (nfun == fun) {
223			getkeyname(buf, len, c);
224			return (TRUE);
225			}
226			if (nfun == NULL) {
227			if (findbind(newmap, fun, buf2, sizeof(buf2)) == TRUE) {
228			getkeyname(keybuf, sizeof(keybuf), c);
229			(void)snprintf(buf, len, "%s %s", keybuf, buf2);
230			return (TRUE);
231			}
232			}
233			}
234			return (FALSE);
235			}