NAME¶

termkey_strfkey - format a string representing a key event

SYNOPSIS¶

#include <termkey.h>

size_t termkey_strfkey(TermKey *tk, char *buffer, size_t len,
            TermKeyKey *key, TermKeyFormat format);

Link with -ltermkey.

DESCRIPTION¶

termkey_strfkey() formats a string buffer to contain a human-readable representation of a key event. It fills the buffer in a way analogous to the snprintf(3) or strftime(3) standard library functions. This function used to be called termkey_snprint_key() but was renamed after version 0.6.

The format argument specifies the format of the output, as a bitmask of the following constants:

TERMKEY_FORMAT_LONGMOD

Print full modifier names e.g. "Shift-" instead of abbreviating to "S-".

TERMKEY_FORMAT_CARETCTRL

If the only modifier is TERMKEY_MOD_CTRL on a plain letter, render it as "^X" rather than "Ctrl-X".

TERMKEY_FORMAT_ALTISMETA

Use the name "Meta" or the letter "M" instead of "Alt" or "A".

TERMKEY_FORMAT_WRAPBRACKET

If the key event is a special key instead of unmodified Unicode, wrap it in "<brackets>".

TERMKEY_FORMAT_SPACEMOD

Use spaces instead of hyphens to separate the modifier name(s) from the base key name.

TERMKEY_FORMAT_LOWERMOD

Use lowercase for the modifier name.

TERMKEY_FORMAT_LOWERSPACE

Use lowercase with spaces in for the key name instead of camelCase (for example "page down" instead of "PageDown").

TERMKEY_FORMAT_MOUSE_POS

If the event is a mouse event, include the position rendered as "@ (col,line)".

The following shortcuts are provided for common combinations of format bits:

TERMKEY_FORMAT_VIM

Shortcut to set ALTISMETA and WRAPBRACKET, to give an output close to the format the vim editor uses.

TERMKEY_FORMAT_URWID

Shortcut to set ALTISMETA, LONGMOD, LOWERMOD, SPACEMOD and LOWERSPACE, to give an output close to the format the urwid python library uses.

When formatting a TERMKEY_TYPE_UNICODE key structure, this function uses the utf8 member. If this member contains an empty string (i.e. its first character is 0) then this member will be prefilled by the function from the code.number member. This can be convenient when the key structure is being constructed programmatically by user code.

RETURN VALUE¶

termkey_strfkey() returns the number of characters written to buffer.

SEE ALSO¶

termkey_new(3), termkey_getkey(3), termkey_waitkey(3), termkey_get_keyname(3), termkey_strpkey(3), termkey(7)