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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [drivers/] [kbd_pipe.c] - Blame information for rev 174

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/*
 * Copyright (C) 2000 by VTech Informations LTD.
 *
 * This source code is released under MPL
 *
 * Vladimir Cotfas <vladimircotfas@vtech.ca> Aug 31, 2000
 *
 * Named pipe Keyboard Driver for Microwindows
 * See src/demos/nxkbd/srvconn.c for example client-side driver
 */
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "device.h"
 
static char kbdName[] = "/tmp/.nano-X-softkbd";
#define KBD_NAMED_PIPE  kbdName 
 
#define _SOFT_DEBUG     0
 
static int kbd_fd = -1; /* keyboar driver FIFO */
 
static int  soft_Open(KBDDEVICE* pkd);
static void soft_Close();
static void soft_GetModifierInfo(MWKEYMOD* modifiers, MWKEYMOD* curmodifiers);
static int  soft_Read(MWKEY* buf, MWKEYMOD* modifiers, MWSCANCODE* scancode);
 
KBDDEVICE kbddev = {
    soft_Open,
    soft_Close,
    soft_GetModifierInfo,
    soft_Read,
    NULL
};
 
/*
 * Open the keyboard.
 */
static int
soft_Open(KBDDEVICE* pkd)
{
        struct stat s;
 
        /* Check if the file already exists: */
        if (!stat(KBD_NAMED_PIPE, &s)) {
                if (unlink(KBD_NAMED_PIPE) < 0)
                        return -1;
        }
        if (mkfifo(KBD_NAMED_PIPE, 0600) < 0) {
                EPRINTF("mkfifo() error %d ('%s')\n", \
                        errno, sys_errlist[errno]);
                return -1;
        }
 
        /* Open the named pipe */
        if ((kbd_fd = open(KBD_NAMED_PIPE, O_RDONLY | O_NONBLOCK)) < 0) {
                EPRINTF("open() error %d ('%s')\n", \
                        errno, sys_errlist[errno]);
                return -1;
        }
 
        return kbd_fd;
}
 
/*
 * Close the keyboard.
 */
static void
soft_Close()
{
#if _SOFT_DEBUG
    EPRINTF("kbd_soft.c: soft_Close(): closing named pipe %d\n", kbd_fd);
#endif
    if (kbd_fd >= 0)
            close(kbd_fd);
    kbd_fd = -1;
 
    unlink(KBD_NAMED_PIPE);
}
 
/*
 * Return the possible modifiers for the keyboard.
 */
static  void
soft_GetModifierInfo(MWKEYMOD* modifiers, MWKEYMOD* curmodifiers)
{
#if _SOFT_DEBUG
    EPRINTF("kbd_soft.c: soft_GetModifierInfo(): being asked about modifiers\n");
#endif
    if (modifiers)
        *modifiers = 0;                  /* no modifiers available */
    if (curmodifiers)
        *curmodifiers = 0;               /* no modifiers available */
}
 
/*
 * This reads one keystroke from the keyboard, and the current state of
 * the mode keys (ALT, SHIFT, CTRL).  Returns -1 on error, 0 if no data
 * is ready, and 1 if data was read.  This is a non-blocking call.
 */
 
static int
soft_Read(MWKEY* buf, MWKEYMOD* modifiers, MWSCANCODE* scancode)
{
    int cc;
    *modifiers = 0;         /* no modifiers yet */
    *scancode = 0;          /* no scancode yet */
 
    cc = read(kbd_fd, buf, 1); /* this is NON BLOCKING read */
 
    if (cc > 0) {
        if(*buf == 0x1b)
              return -2;      /* special case ESC*/
#if _SOFT_DEBUG
        EPRINTF("kbd_soft.c: soft_Read(): read '%c', cc = %d\n",
                buf[0], cc);
        fflush(NULL);
#endif
        return 1;
    }
 
    return 0;
}

Line No.	Rev	Author	Line
1	27	unneback	`/*`
2			`* Copyright (C) 2000 by VTech Informations LTD.`
3			`*`
4			`* This source code is released under MPL`
5			`*`
6			`* Vladimir Cotfas <vladimircotfas@vtech.ca> Aug 31, 2000`
7			`*`
8			`* Named pipe Keyboard Driver for Microwindows`
9			`* See src/demos/nxkbd/srvconn.c for example client-side driver`
10			`*/`
11			`#include <stdio.h>`
12			`#include <stddef.h>`
13			`#include <stdlib.h>`
14			`#include <unistd.h>`
15			`#include <errno.h>`
16			`#include <string.h>`
17			`#include <fcntl.h>`
18			`#include <sys/stat.h>`
19			`#include <sys/types.h>`
20			`#include "device.h"`
21
22			`static char kbdName[] = "/tmp/.nano-X-softkbd";`
23			`#define KBD_NAMED_PIPE kbdName`
24
25			`#define _SOFT_DEBUG 0`
26
27			`static int kbd_fd = -1; /* keyboar driver FIFO */`
28
29			`static int soft_Open(KBDDEVICE* pkd);`
30			`static void soft_Close();`
31			`static void soft_GetModifierInfo(MWKEYMOD* modifiers, MWKEYMOD* curmodifiers);`
32			`static int soft_Read(MWKEY* buf, MWKEYMOD* modifiers, MWSCANCODE* scancode);`
33
34			`KBDDEVICE kbddev = {`
35			`soft_Open,`
36			`soft_Close,`
37			`soft_GetModifierInfo,`
38			`soft_Read,`
39			`NULL`
40			`};`
41
42			`/*`
43			`* Open the keyboard.`
44			`*/`
45			`static int`
46			`soft_Open(KBDDEVICE* pkd)`
47			`{`
48			`struct stat s;`
49
50			`/* Check if the file already exists: */`
51			`if (!stat(KBD_NAMED_PIPE, &s)) {`
52			`if (unlink(KBD_NAMED_PIPE) < 0)`
53			`return -1;`
54			`}`
55			`if (mkfifo(KBD_NAMED_PIPE, 0600) < 0) {`
56			`EPRINTF("mkfifo() error %d ('%s')\n", \`
57			`errno, sys_errlist[errno]);`
58			`return -1;`
59			`}`
60
61			`/* Open the named pipe */`
62			`if ((kbd_fd = open(KBD_NAMED_PIPE, O_RDONLY \| O_NONBLOCK)) < 0) {`
63			`EPRINTF("open() error %d ('%s')\n", \`
64			`errno, sys_errlist[errno]);`
65			`return -1;`
66			`}`
67
68			`return kbd_fd;`
69			`}`
70
71			`/*`
72			`* Close the keyboard.`
73			`*/`
74			`static void`
75			`soft_Close()`
76			`{`
77			`#if _SOFT_DEBUG`
78			`EPRINTF("kbd_soft.c: soft_Close(): closing named pipe %d\n", kbd_fd);`
79			`#endif`
80			`if (kbd_fd >= 0)`
81			`close(kbd_fd);`
82			`kbd_fd = -1;`
83
84			`unlink(KBD_NAMED_PIPE);`
85			`}`
86
87			`/*`
88			`* Return the possible modifiers for the keyboard.`
89			`*/`
90			`static void`
91			`soft_GetModifierInfo(MWKEYMOD* modifiers, MWKEYMOD* curmodifiers)`
92			`{`
93			`#if _SOFT_DEBUG`
94			`EPRINTF("kbd_soft.c: soft_GetModifierInfo(): being asked about modifiers\n");`
95			`#endif`
96			`if (modifiers)`
97			`modifiers = 0; / no modifiers available */`
98			`if (curmodifiers)`
99			`curmodifiers = 0; / no modifiers available */`
100			`}`
101
102			`/*`
103			`* This reads one keystroke from the keyboard, and the current state of`
104			`* the mode keys (ALT, SHIFT, CTRL). Returns -1 on error, 0 if no data`
105			`* is ready, and 1 if data was read. This is a non-blocking call.`
106			`*/`
107
108			`static int`
109			`soft_Read(MWKEY* buf, MWKEYMOD* modifiers, MWSCANCODE* scancode)`
110			`{`
111			`int cc;`
112			`modifiers = 0; / no modifiers yet */`
113			`scancode = 0; / no scancode yet */`
114
115			`cc = read(kbd_fd, buf, 1); /* this is NON BLOCKING read */`
116
117			`if (cc > 0) {`
118			`if(*buf == 0x1b)`
119			`return -2; /* special case ESC*/`
120			`#if _SOFT_DEBUG`
121			`EPRINTF("kbd_soft.c: soft_Read(): read '%c', cc = %d\n",`
122			`buf[0], cc);`
123			`fflush(NULL);`
124			`#endif`
125			`return 1;`
126			`}`
127
128			`return 0;`
129			`}`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [drivers/] [kbd_pipe.c] - Blame information for rev 174