WebSVN – HelenOS – Diff – /branches/tracing/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/console.h>
#include <io/keycode.h>
#include <io/style.h>
#include <vfs/vfs.h>
#include <errno.h>
#include <bool.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 = str_dup(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)
{
    console_event_t ev;
    size_t offs, otmp;
    wchar_t dec;
 
    offs = 0;
    while (true) {
        fflush(stdout);
        if (!console_get_event(fphone(stdin), &ev))
            return;
       
        if (ev.type != KEY_PRESS)
            continue;
       
        if (ev.key == KC_ENTER || ev.key == KC_NENTER)
            break;
        if (ev.key == KC_BACKSPACE) {
            if (offs > 0) {
                /*
                 * Back up until we reach valid start of
                 * character.
                 */
                while (offs > 0) {
                    --offs; otmp = offs;
                    dec = str_decode(buffer, &otmp, n);
                    if (dec != U_SPECIAL)
                        break;
                }
                putchar('\b');
            }
            continue;
        }
        if (ev.c >= ' ') {
 
            if (chr_encode(ev.c, buffer, &offs, n - 1) == EOK)
                putchar(ev.c);
        }
    }
    putchar('\n');
    buffer[offs] = '\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];
 
    fflush(stdout);
    console_set_style(fphone(stdout), STYLE_EMPHASIS);
    printf("%s", usr->prompt);
    fflush(stdout);
    console_set_style(fphone(stdout), STYLE_NORMAL);
 
    read_line(line, INPUT_MAX);
    /* Make sure we don't have rubbish or a C/R happy user */
    if (str_cmp(line, "") == 0 || str_cmp(line, "\n") == 0)
        return;
    usr->line = str_dup(line);
 
    return;
}
 
 

Rev 4377	Rev 4692
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/console.h>
36	#include <console.h>	36	#include <io/keycode.h>
37	#include <kbd/kbd.h>	37	#include <io/style.h>
38	#include <kbd/keycode.h>	38	#include <vfs/vfs.h>
39	#include <errno.h>	39	#include <errno.h>
40	#include <bool.h>	40	#include <bool.h>
41		41
42	#include "config.h"	42	#include "config.h"
43	#include "util.h"	43	#include "util.h"
44	#include "scli.h"	44	#include "scli.h"
45	#include "input.h"	45	#include "input.h"
46	#include "errors.h"	46	#include "errors.h"
47	#include "exec.h"	47	#include "exec.h"
48		48
49	static void read_line(char *, int);	49	static void read_line(char *, int);
50		50
51	/* Tokenizes input from console, sees if the first word is a built-in, if so	51	/* Tokenizes input from console, sees if the first word is a built-in, if so
52	* invokes the built-in entry point (a[0]) passing all arguments in a[] to	52	* invokes the built-in entry point (a[0]) passing all arguments in a[] to
53	* the handler */	53	* the handler */
54	int tok_input(cliuser_t *usr)	54	int tok_input(cliuser_t *usr)
55	{	55	{
56	char *cmd[WORD_MAX];	56	char *cmd[WORD_MAX];
57	int n = 0, i = 0;	57	int n = 0, i = 0;
58	int rc = 0;	58	int rc = 0;
59	char *tmp;	59	char *tmp;
60		60
61	if (NULL == usr->line)	61	if (NULL == usr->line)
62	return CL_EFAIL;	62	return CL_EFAIL;
63		63
64	tmp = str_dup(usr->line);	64	tmp = str_dup(usr->line);
65		65
66	cmd[n] = strtok(tmp, " ");	66	cmd[n] = strtok(tmp, " ");
67	while (cmd[n] && n < WORD_MAX) {	67	while (cmd[n] && n < WORD_MAX) {
68	cmd[++n] = strtok(NULL, " ");	68	cmd[++n] = strtok(NULL, " ");
69	}	69	}
70		70
71	/* We have rubbish */	71	/* We have rubbish */
72	if (NULL == cmd[0]) {	72	if (NULL == cmd[0]) {
73	rc = CL_ENOENT;	73	rc = CL_ENOENT;
74	goto finit;	74	goto finit;
75	}	75	}
76		76
77	/* Its a builtin command ? */	77	/* Its a builtin command ? */
78	if ((i = (is_builtin(cmd[0]))) > -1) {	78	if ((i = (is_builtin(cmd[0]))) > -1) {
79	rc = run_builtin(i, cmd, usr);	79	rc = run_builtin(i, cmd, usr);
80	goto finit;	80	goto finit;
81	/* Its a module ? */	81	/* Its a module ? */
82	} else if ((i = (is_module(cmd[0]))) > -1) {	82	} else if ((i = (is_module(cmd[0]))) > -1) {
83	rc = run_module(i, cmd);	83	rc = run_module(i, cmd);
84	goto finit;	84	goto finit;
85	}	85	}
86		86
87	/* See what try_exec thinks of it */	87	/* See what try_exec thinks of it */
88	rc = try_exec(cmd[0], cmd);	88	rc = try_exec(cmd[0], cmd);
89		89
90	finit:	90	finit:
91	if (NULL != usr->line) {	91	if (NULL != usr->line) {
92	free(usr->line);	92	free(usr->line);
93	usr->line = (char *) NULL;	93	usr->line = (char *) NULL;
94	}	94	}
95	if (NULL != tmp)	95	if (NULL != tmp)
96	free(tmp);	96	free(tmp);
97		97
98	return rc;	98	return rc;
99	}	99	}
100		100
101	static void read_line(char *buffer, int n)	101	static void read_line(char *buffer, int n)
102	{	102	{
103	kbd_event_t ev;	103	console_event_t ev;
104	size_t offs, otmp;	104	size_t offs, otmp;
105	wchar_t dec;	105	wchar_t dec;
106		106
107	offs = 0;	107	offs = 0;
108	while (true) {	108	while (true) {
109	fflush(stdout);	109	fflush(stdout);
110	if (kbd_get_event(&ev) < 0)	110	if (!console_get_event(fphone(stdin), &ev))
111	return;	111	return;
-		112
112	if (ev.type == KE_RELEASE)	113	if (ev.type != KEY_PRESS)
113	continue;	114	continue;
114		115
115	if (ev.key == KC_ENTER \|\| ev.key == KC_NENTER)	116	if (ev.key == KC_ENTER \|\| ev.key == KC_NENTER)
116	break;	117	break;
117	if (ev.key == KC_BACKSPACE) {	118	if (ev.key == KC_BACKSPACE) {
118	if (offs > 0) {	119	if (offs > 0) {
119	/*	120	/*
120	* Back up until we reach valid start of	121	* Back up until we reach valid start of
121	* character.	122	* character.
122	*/	123	*/
123	while (offs > 0) {	124	while (offs > 0) {
124	--offs; otmp = offs;	125	--offs; otmp = offs;
125	dec = str_decode(buffer, &otmp, n);	126	dec = str_decode(buffer, &otmp, n);
126	if (dec != U_SPECIAL)	127	if (dec != U_SPECIAL)
127	break;	128	break;
128	}	129	}
129	putchar('\b');	130	putchar('\b');
130	}	131	}
131	continue;	132	continue;
132	}	133	}
133	if (ev.c >= ' ') {	134	if (ev.c >= ' ') {
134	//putchar(ev.c);	-
135	if (chr_encode(ev.c, buffer, &offs, n - 1) == EOK)	135	if (chr_encode(ev.c, buffer, &offs, n - 1) == EOK)
136	console_putchar(ev.c);	136	putchar(ev.c);
137	}	137	}
138	}	138	}
139	putchar('\n');	139	putchar('\n');
140	buffer[offs] = '\0';	140	buffer[offs] = '\0';
141	}	141	}
142		142
143	/* TODO:	143	/* TODO:
144	* Implement something like editline() / readline(), if even	144	* Implement something like editline() / readline(), if even
145	* just for command history and making arrows work. */	145	* just for command history and making arrows work. */
146	void get_input(cliuser_t *usr)	146	void get_input(cliuser_t *usr)
147	{	147	{
148	char line[INPUT_MAX];	148	char line[INPUT_MAX];
149		149
-		150	fflush(stdout);
150	console_set_style(STYLE_EMPHASIS);	151	console_set_style(fphone(stdout), STYLE_EMPHASIS);
151	printf("%s", usr->prompt);	152	printf("%s", usr->prompt);
-		153	fflush(stdout);
152	console_set_style(STYLE_NORMAL);	154	console_set_style(fphone(stdout), STYLE_NORMAL);
153		155
154	read_line(line, INPUT_MAX);	156	read_line(line, INPUT_MAX);
155	/* Make sure we don't have rubbish or a C/R happy user */	157	/* Make sure we don't have rubbish or a C/R happy user */
156	if (str_cmp(line, "") == 0 \|\| str_cmp(line, "\n") == 0)	158	if (str_cmp(line, "") == 0 \|\| str_cmp(line, "\n") == 0)
157	return;	159	return;
158	usr->line = str_dup(line);	160	usr->line = str_dup(line);
159		161
160	return;	162	return;
161	}	163	}
162		164
163		165

Subversion Repositories HelenOS

(root)/branches/tracing/uspace/app/bdsh/input.c – Rev 4377 → 4692