io_inkey.c File Reference

#include "../fb.h"
#include "fb_private_console.h"
#include <termcap.h>

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Data Structures
struct	NODE
struct	KEY_DATA

Macros
#define	KEY_BUFFER_LEN   256
#define	KEY_MOUSE   0x200

Typedefs
typedef struct NODE	NODE
typedef struct KEY_DATA	KEY_DATA

Functions
static void	add_key (NODE **node, char *key, short code)
static void	init_keys ()
static int	get_input ()
void	fb_hAddCh (int k)
int	fb_hGetCh (int remove)
FBSTRING *	fb_ConsoleInkey (void)
int	fb_ConsoleGetkey (void)
int	fb_ConsoleKeyHit (void)

Variables
static const KEY_DATA	key_data []
static int	key_buffer [KEY_BUFFER_LEN]
static int	key_head = 0
static int	key_tail = 0
static NODE *	root_node = NULL

Macro Definition Documentation

#define KEY_BUFFER_LEN   256

Definition at line 12 of file io_inkey.c.

#define KEY_MOUSE   0x200

Definition at line 14 of file io_inkey.c.

Typedef Documentation

typedef struct KEY_DATA KEY_DATA

typedef struct NODE NODE

Function Documentation

static void add_key ( NODE **  node, char *  key, short  code  )

static

This builds a simple tree that allows fairly easy lookup of the terminal escape sequences (keys) that were added. For example:

after adding these key sequences:

    [a1, [a2, [b1, [b2

the tree looks like:  (| = child, - = sibling)

    root -> <[>
             |
            <b>-----------<a>
             |             |
            <2>----<1>    <2>----<1>

Definition at line 59 of file io_inkey.c.

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int fb_ConsoleGetkey

(

void

)

Definition at line 244 of file io_inkey.c.

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FBSTRING* fb_ConsoleInkey

(

void

)

Definition at line 227 of file io_inkey.c.

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int fb_ConsoleKeyHit

(

void

)

Definition at line 257 of file io_inkey.c.

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void fb_hAddCh

(

int

k)

Definition at line 195 of file io_inkey.c.

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int fb_hGetCh

(

int

remove)

Definition at line 208 of file io_inkey.c.

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static int get_input ( )

static

Definition at line 144 of file io_inkey.c.

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static void init_keys ( )

static

Lookup the terminal escape sequences (termcap database entries) corresponding to the id strings defined in the key_data table above (only key presses here).

For example, the id string "kh" corresponds to the HOME key, and tgetstr("kh", NULL) returns the escape sequence that the terminal will send when the HOME key was pressed.

These typically vary from terminal to terminal (for example TERM=xterm vs. TERM=linux) and perhaps depend on other factors aswell.

Definition at line 99 of file io_inkey.c.

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Variable Documentation

int key_buffer[KEY_BUFFER_LEN]

static

Definition at line 56 of file io_inkey.c.

const KEY_DATA key_data[]

static

Initial value:

= {
        { "kb", KEY_BACKSPACE },
        { "kT", KEY_TAB       },
        { "k1", KEY_F1        },
        { "k2", KEY_F2        },
        { "k3", KEY_F3        },
        { "k4", KEY_F4        },
        { "k5", KEY_F5        },
        { "k6", KEY_F6        },
        { "k7", KEY_F7        },
        { "k8", KEY_F8        },
        { "k9", KEY_F9        },
        { "k;", KEY_F10       },
        { "kh", KEY_HOME      },
        { "ku", KEY_UP        },
        { "kP", KEY_PAGE_UP   },
        { "kl", KEY_LEFT      },
        { "kr", KEY_RIGHT     },
        { "@7", KEY_END       },
        { "kd", KEY_DOWN      },
        { "kN", KEY_PAGE_DOWN },
        { "kI", KEY_INS       },
        { "kD", KEY_DEL       },
        { NULL, 0 }
}

Definition at line 30 of file io_inkey.c.

int key_head = 0

static

Definition at line 56 of file io_inkey.c.

int key_tail = 0

static

Definition at line 56 of file io_inkey.c.

NODE* root_node = NULL

static

Definition at line 57 of file io_inkey.c.