WebSVN – HelenOS – Diff – /trunk/uspace/app/bdsh/input.c


/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
 * All rights reserved.
 * Copyright (c) 2008, Jiri Svoboda - All Rights Reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 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.
 *
 * Neither the name of the original program's authors 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <io/stream.h>
#include <console.h>
#include <kbd/kbd.h>
#include <kbd/keycode.h>
 
#include "config.h"
#include "util.h"
#include "scli.h"
#include "input.h"
#include "errors.h"
#include "exec.h"
 
static void read_line(char *, int);
 
/* Tokenizes input from console, sees if the first word is a built-in, if so
 * invokes the built-in entry point (a[0]) passing all arguments in a[] to
 * the handler */
int tok_input(cliuser_t *usr)
{
    char *cmd[WORD_MAX];
    int n = 0, i = 0;
    int rc = 0;
    char *tmp;
 
    if (NULL == usr->line)
        return CL_EFAIL;
 
    tmp = strdup(usr->line);
 
    cmd[n] = strtok(tmp, " ");
    while (cmd[n] && n < WORD_MAX) {
        cmd[++n] = strtok(NULL, " ");
    }
 
    /* We have rubbish */
    if (NULL == cmd[0]) {
        rc = CL_ENOENT;
        goto finit;
    }
 
    /* Its a builtin command ? */
    if ((i = (is_builtin(cmd[0]))) > -1) {
        rc = run_builtin(i, cmd, usr);
        goto finit;
    /* Its a module ? */
    } else if ((i = (is_module(cmd[0]))) > -1) {
        rc = run_module(i, cmd);
        goto finit;
    }
 
    /* See what try_exec thinks of it */
    rc = try_exec(cmd[0], cmd);
 
finit:
    if (NULL != usr->line) {
        free(usr->line);
        usr->line = (char *) NULL;
    }
    if (NULL != tmp)
        free(tmp);
 
    return rc;
}
 
static void read_line(char *buffer, int n)
{
    kbd_event_t ev;
    int chars;
 
    chars = 0;
    while (chars < n - 1) {
        fflush(stdout);
        if (kbd_get_event(&ev) < 0)
            return;
        if (ev.type == KE_RELEASE)
            continue;
 
        if (ev.key == KC_ENTER || ev.key == KC_NENTER)
            break;
        if (ev.key == KC_BACKSPACE) {
            if (chars > 0) {
                putchar('\b');
                --chars;
            }
            continue;
        }
        if (ev.c >= ' ') {
            //putchar(ev.c);
            console_putchar(ev.c);
            buffer[chars++] = ev.c;
        }
    }
    putchar('\n');
    buffer[chars] = '\0';
}
 
/* TODO:
 * Implement something like editline() / readline(), if even
 * just for command history and making arrows work. */
void get_input(cliuser_t *usr)
{
    char line[INPUT_MAX];
    size_t len = 0;
 
    console_set_style(STYLE_EMPHASIS);
    printf("%s", usr->prompt);
    console_set_style(STYLE_NORMAL);
 
    read_line(line, INPUT_MAX);
    len = strlen(line);
    /* Make sure we don't have rubbish or a C/R happy user */
    if (len == 0 || line[0] == '\n')
        return;
    usr->line = strdup(line);
 
    return;
}
 
 

Rev 3980	Rev 4239
1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>	1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
2	* All rights reserved.	2	* All rights reserved.
3	* Copyright (c) 2008, Jiri Svoboda - All Rights Reserved	3	* Copyright (c) 2008, Jiri Svoboda - All Rights Reserved
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are met:	6	* modification, are permitted provided that the following conditions are met:
7	*	7	*
8	* Redistributions of source code must retain the above copyright notice, this	8	* Redistributions of source code must retain the above copyright notice, this
9	* list of conditions and the following disclaimer.	9	* list of conditions and the following disclaimer.
10	*	10	*
11	* Redistributions in binary form must reproduce the above copyright notice,	11	* Redistributions in binary form must reproduce the above copyright notice,
12	* this list of conditions and the following disclaimer in the documentation	12	* this list of conditions and the following disclaimer in the documentation
13	* and/or other materials provided with the distribution.	13	* and/or other materials provided with the distribution.
14	*	14	*
15	* Neither the name of the original program's authors nor the names of its	15	* Neither the name of the original program's authors nor the names of its
16	* contributors may be used to endorse or promote products derived from this	16	* contributors may be used to endorse or promote products derived from this
17	* software without specific prior written permission.	17	* software without specific prior written permission.
18	*	18	*
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"	19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	20	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR	23	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF	24	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS	25	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN	26	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)	27	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE	28	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29	* POSSIBILITY OF SUCH DAMAGE.	29	* POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31		31
32	#include <stdio.h>	32	#include <stdio.h>
33	#include <stdlib.h>	33	#include <stdlib.h>
34	#include <string.h>	34	#include <string.h>
35	#include <io/stream.h>	35	#include <io/stream.h>
36	#include <console.h>	36	#include <console.h>
-		37	#include <kbd/kbd.h>
-		38	#include <kbd/keycode.h>
37		39
38	#include "config.h"	40	#include "config.h"
39	#include "util.h"	41	#include "util.h"
40	#include "scli.h"	42	#include "scli.h"
41	#include "input.h"	43	#include "input.h"
42	#include "errors.h"	44	#include "errors.h"
43	#include "exec.h"	45	#include "exec.h"
44		46
45	static void read_line(char *, int);	47	static void read_line(char *, int);
46		48
47	/* Tokenizes input from console, sees if the first word is a built-in, if so	49	/* Tokenizes input from console, sees if the first word is a built-in, if so
48	* invokes the built-in entry point (a[0]) passing all arguments in a[] to	50	* invokes the built-in entry point (a[0]) passing all arguments in a[] to
49	* the handler */	51	* the handler */
50	int tok_input(cliuser_t *usr)	52	int tok_input(cliuser_t *usr)
51	{	53	{
52	char *cmd[WORD_MAX];	54	char *cmd[WORD_MAX];
53	int n = 0, i = 0;	55	int n = 0, i = 0;
54	int rc = 0;	56	int rc = 0;
55	char *tmp;	57	char *tmp;
56		58
57	if (NULL == usr->line)	59	if (NULL == usr->line)
58	return CL_EFAIL;	60	return CL_EFAIL;
59		61
60	tmp = strdup(usr->line);	62	tmp = strdup(usr->line);
61		63
62	cmd[n] = strtok(tmp, " ");	64	cmd[n] = strtok(tmp, " ");
63	while (cmd[n] && n < WORD_MAX) {	65	while (cmd[n] && n < WORD_MAX) {
64	cmd[++n] = strtok(NULL, " ");	66	cmd[++n] = strtok(NULL, " ");
65	}	67	}
66		68
67	/* We have rubbish */	69	/* We have rubbish */
68	if (NULL == cmd[0]) {	70	if (NULL == cmd[0]) {
69	rc = CL_ENOENT;	71	rc = CL_ENOENT;
70	goto finit;	72	goto finit;
71	}	73	}
72		74
73	/* Its a builtin command ? */	75	/* Its a builtin command ? */
74	if ((i = (is_builtin(cmd[0]))) > -1) {	76	if ((i = (is_builtin(cmd[0]))) > -1) {
75	rc = run_builtin(i, cmd, usr);	77	rc = run_builtin(i, cmd, usr);
76	goto finit;	78	goto finit;
77	/* Its a module ? */	79	/* Its a module ? */
78	} else if ((i = (is_module(cmd[0]))) > -1) {	80	} else if ((i = (is_module(cmd[0]))) > -1) {
79	rc = run_module(i, cmd);	81	rc = run_module(i, cmd);
80	goto finit;	82	goto finit;
81	}	83	}
82		84
83	/* See what try_exec thinks of it */	85	/* See what try_exec thinks of it */
84	rc = try_exec(cmd[0], cmd);	86	rc = try_exec(cmd[0], cmd);
85		87
86	finit:	88	finit:
87	if (NULL != usr->line) {	89	if (NULL != usr->line) {
88	free(usr->line);	90	free(usr->line);
89	usr->line = (char *) NULL;	91	usr->line = (char *) NULL;
90	}	92	}
91	if (NULL != tmp)	93	if (NULL != tmp)
92	free(tmp);	94	free(tmp);
93		95
94	return rc;	96	return rc;
95	}	97	}
96		98
97	static void read_line(char *buffer, int n)	99	static void read_line(char *buffer, int n)
98	{	100	{
99	char c;	101	kbd_event_t ev;
100	int chars;	102	int chars;
101		103
102	chars = 0;	104	chars = 0;
103	while (chars < n - 1) {	105	while (chars < n - 1) {
104	c = getchar();	106	fflush(stdout);
105	if (c < 0)	107	if (kbd_get_event(&ev) < 0)
106	return;	108	return;
107	if (c == '\n')	109	if (ev.type == KE_RELEASE)
-		110	continue;
-		111
-		112	if (ev.key == KC_ENTER \|\| ev.key == KC_NENTER)
108	break;	113	break;
109	if (c == '\b') {	114	if (ev.key == KC_BACKSPACE) {
110	if (chars > 0) {	115	if (chars > 0) {
111	putchar('\b');	116	putchar('\b');
112	--chars;	117	--chars;
113	}	118	}
114	continue;	119	continue;
115	}	120	}
116	if (c >= ' ') {	121	if (ev.c >= ' ') {
117	putchar(c);	122	//putchar(ev.c);
-		123	console_putchar(ev.c);
118	buffer[chars++] = c;	124	buffer[chars++] = ev.c;
119	}	125	}
120	}	126	}
121	putchar('\n');	127	putchar('\n');
122	buffer[chars] = '\0';	128	buffer[chars] = '\0';
123	}	129	}
124		130
125	/* TODO:	131	/* TODO:
126	* Implement something like editline() / readline(), if even	132	* Implement something like editline() / readline(), if even
127	* just for command history and making arrows work. */	133	* just for command history and making arrows work. */
128	void get_input(cliuser_t *usr)	134	void get_input(cliuser_t *usr)
129	{	135	{
130	char line[INPUT_MAX];	136	char line[INPUT_MAX];
131	size_t len = 0;	137	size_t len = 0;
132		138
133	console_set_style(STYLE_EMPHASIS);	139	console_set_style(STYLE_EMPHASIS);
134	printf("%s", usr->prompt);	140	printf("%s", usr->prompt);
135	console_set_style(STYLE_NORMAL);	141	console_set_style(STYLE_NORMAL);
136		142
137	read_line(line, INPUT_MAX);	143	read_line(line, INPUT_MAX);
138	len = strlen(line);	144	len = strlen(line);
139	/* Make sure we don't have rubbish or a C/R happy user */	145	/* Make sure we don't have rubbish or a C/R happy user */
140	if (len == 0 \|\| line[0] == '\n')	146	if (len == 0 \|\| line[0] == '\n')
141	return;	147	return;
142	usr->line = strdup(line);	148	usr->line = strdup(line);
143		149
144	return;	150	return;
145	}	151	}
146		152
147		153

Subversion Repositories HelenOS

(root)/trunk/uspace/app/bdsh/input.c @ 3359 – Rev 3980 → 4239