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 "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 = cli_strdup(usr->line);
 
    cmd[n] = cli_strtok(tmp, " ");
    while (cmd[n] && n < WORD_MAX) {
        cmd[++n] = cli_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;
}
 
/* Borrowed from Jiri Svoboda's 'cli' uspace app */
static void read_line(char *buffer, int n)
{
    char c;
    int chars;
 
    chars = 0;
    while (chars < n - 1) {
        c = getchar();
        if (c < 0)
            return;
        if (c == '\n')
            break;
        if (c == '\b') {
            if (chars > 0) {
                putchar('\b');
                --chars;
            }
            continue;
        }
        putchar(c);
        buffer[chars++] = 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 = cli_strdup(line);
 
    return;
}
 
 

Rev 3809	Rev 3812
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		37
38	#include "config.h"	38	#include "config.h"
39	#include "util.h"	39	#include "util.h"
40	#include "scli.h"	40	#include "scli.h"
41	#include "input.h"	41	#include "input.h"
42	#include "errors.h"	42	#include "errors.h"
43	#include "exec.h"	43	#include "exec.h"
44		44
45	extern volatile unsigned int cli_interactive;	-
46		-
47	/* Not exposed in input.h */	-
48	static void cli_restricted(char *);	-
49	static void read_line(char *, int);	45	static void read_line(char *, int);
50		46
51	/* More than a macro than anything */	-
52	static void cli_restricted(char *cmd)	-
53	{	-
54	printf("%s is not available in %s mode\n", cmd,	-
55	cli_interactive ? "interactive" : "non-interactive");	-
56		-
57	return;	-
58	}	-
59		-
60	/* Tokenizes input from console, sees if the first word is a built-in, if so	47	/* Tokenizes input from console, sees if the first word is a built-in, if so
61	* invokes the built-in entry point (a[0]) passing all arguments in a[] to	48	* invokes the built-in entry point (a[0]) passing all arguments in a[] to
62	* the handler */	49	* the handler */
63	int tok_input(cliuser_t *usr)	50	int tok_input(cliuser_t *usr)
64	{	51	{
65	char *cmd[WORD_MAX];	52	char *cmd[WORD_MAX];
66	int n = 0, i = 0;	53	int n = 0, i = 0;
67	int rc = 0;	54	int rc = 0;
68	char *tmp;	55	char *tmp;
69		56
70	if (NULL == usr->line)	57	if (NULL == usr->line)
71	return CL_EFAIL;	58	return CL_EFAIL;
72		59
73	tmp = cli_strdup(usr->line);	60	tmp = cli_strdup(usr->line);
74		61
75	cmd[n] = cli_strtok(tmp, " ");	62	cmd[n] = cli_strtok(tmp, " ");
76	while (cmd[n] && n < WORD_MAX) {	63	while (cmd[n] && n < WORD_MAX) {
77	cmd[++n] = cli_strtok(NULL, " ");	64	cmd[++n] = cli_strtok(NULL, " ");
78	}	65	}
79		66
80	/* We have rubbish */	67	/* We have rubbish */
81	if (NULL == cmd[0]) {	68	if (NULL == cmd[0]) {
82	rc = CL_ENOENT;	69	rc = CL_ENOENT;
83	goto finit;	70	goto finit;
84	}	71	}
85		72
86	/* Its a builtin command ? */	73	/* Its a builtin command ? */
87	if ((i = (is_builtin(cmd[0]))) > -1) {	74	if ((i = (is_builtin(cmd[0]))) > -1) {
88	rc = run_builtin(i, cmd, usr);	75	rc = run_builtin(i, cmd, usr);
89	goto finit;	76	goto finit;
90	/* Its a module ? */	77	/* Its a module ? */
91	} else if ((i = (is_module(cmd[0]))) > -1) {	78	} else if ((i = (is_module(cmd[0]))) > -1) {
92	rc = run_module(i, cmd);	79	rc = run_module(i, cmd);
93	goto finit;	80	goto finit;
94	}	81	}
95		82
96	/* See what try_exec thinks of it */	83	/* See what try_exec thinks of it */
97	rc = try_exec(cmd[0], cmd);	84	rc = try_exec(cmd[0], cmd);
98		85
99	finit:	86	finit:
100	if (NULL != usr->line) {	87	if (NULL != usr->line) {
101	free(usr->line);	88	free(usr->line);
102	usr->line = (char *) NULL;	89	usr->line = (char *) NULL;
103	}	90	}
104	if (NULL != tmp)	91	if (NULL != tmp)
105	free(tmp);	92	free(tmp);
106		93
107	return rc;	94	return rc;
108	}	95	}
109		96
110	/* Borrowed from Jiri Svoboda's 'cli' uspace app */	97	/* Borrowed from Jiri Svoboda's 'cli' uspace app */
111	static void read_line(char *buffer, int n)	98	static void read_line(char *buffer, int n)
112	{	99	{
113	char c;	100	char c;
114	int chars;	101	int chars;
115		102
116	chars = 0;	103	chars = 0;
117	while (chars < n - 1) {	104	while (chars < n - 1) {
118	c = getchar();	105	c = getchar();
119	if (c < 0)	106	if (c < 0)
120	return;	107	return;
121	if (c == '\n')	108	if (c == '\n')
122	break;	109	break;
123	if (c == '\b') {	110	if (c == '\b') {
124	if (chars > 0) {	111	if (chars > 0) {
125	putchar('\b');	112	putchar('\b');
126	--chars;	113	--chars;
127	}	114	}
128	continue;	115	continue;
129	}	116	}
130	putchar(c);	117	putchar(c);
131	buffer[chars++] = c;	118	buffer[chars++] = c;
132	}	119	}
133	putchar('\n');	120	putchar('\n');
134	buffer[chars] = '\0';	121	buffer[chars] = '\0';
135	}	122	}
136		123
137	/* TODO:	124	/* TODO:
138	* Implement something like editline() / readline(), if even	125	* Implement something like editline() / readline(), if even
139	* just for command history and making arrows work. */	126	* just for command history and making arrows work. */
140	void get_input(cliuser_t *usr)	127	void get_input(cliuser_t *usr)
141	{	128	{
142	char line[INPUT_MAX];	129	char line[INPUT_MAX];
143	size_t len = 0;	130	size_t len = 0;
144		131
145	console_set_style(STYLE_EMPHASIS);	132	console_set_style(STYLE_EMPHASIS);
146	printf("%s", usr->prompt);	133	printf("%s", usr->prompt);
147	console_set_style(STYLE_NORMAL);	134	console_set_style(STYLE_NORMAL);
148		135
149	read_line(line, INPUT_MAX);	136	read_line(line, INPUT_MAX);
150	len = strlen(line);	137	len = strlen(line);
151	/* Make sure we don't have rubbish or a C/R happy user */	138	/* Make sure we don't have rubbish or a C/R happy user */
152	if (len == 0 \|\| line[0] == '\n')	139	if (len == 0 \|\| line[0] == '\n')
153	return;	140	return;
154	usr->line = cli_strdup(line);	141	usr->line = cli_strdup(line);
155		142
156	return;	143	return;
157	}	144	}
158		145
159		146

Subversion Repositories HelenOS

(root)/trunk/uspace/app/bdsh/input.c @ 3813 – Rev 3809 → 3812