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freebsd-dev/contrib/nvi/common/key.h
Baptiste Daroussin 110d525ec6 Update nvi to 2.2.0 
Main changes:
* Vim-style expandtab option
* Provides Turkish translation
* Backspace now deletes \ rather than being escaped
* T during motion commands is now VI-compatible
* Encoding related fixes, such as UTF-8 detection
* Fixed a number of memory management issues

MFC after:	3 weeks
2020-09-09 08:38:47 +00:00

241 lines
8.6 KiB
C
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/*-
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1991, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "multibyte.h"
#ifdef USE_WIDECHAR
#define FILE2INT5(sp,buf,n,nlen,w,wlen) \
sp->conv.file2int(sp, n, nlen, &buf, &wlen, &w)
#define INT2FILE(sp,w,wlen,n,nlen) \
sp->conv.int2file(sp, w, wlen, &sp->cw, &nlen, &n)
#define CHAR2INT5(sp,buf,n,nlen,w,wlen) \
sp->conv.sys2int(sp, n, nlen, &buf, &wlen, &w)
#define INT2CHAR(sp,w,wlen,n,nlen) \
sp->conv.int2sys(sp, w, wlen, &sp->cw, &nlen, &n)
#define INPUT2INT5(sp,cw,n,nlen,w,wlen) \
sp->conv.input2int(sp, n, nlen, &(cw), &wlen, &w)
#define CONST
#define INTISWIDE(c) (wctob(c) == EOF)
#define CHAR_WIDTH(sp, ch) wcwidth(ch)
#define CAN_PRINT(sp, ch) (CHAR_WIDTH(sp, ch) > 0)
#else
#define FILE2INT5(sp,buf,n,nlen,w,wlen) \
(w = n, wlen = nlen, 0)
#define INT2FILE(sp,w,wlen,n,nlen) \
(n = w, nlen = wlen, 0)
#define CHAR2INT5(sp,buf,n,nlen,w,wlen) \
(w = n, wlen = nlen, 0)
#define INT2CHAR(sp,w,wlen,n,nlen) \
(n = w, nlen = wlen, 0)
#define INPUT2INT5(sp,buf,n,nlen,w,wlen) \
(w = n, wlen = nlen, 0)
#define CONST const
#define INTISWIDE(c) 0
#define CHAR_WIDTH(sp, ch) 1
#define CAN_PRINT(sp, ch) isprint(ch)
#endif
#define FILE2INT(sp,n,nlen,w,wlen) \
FILE2INT5(sp,sp->cw,n,nlen,w,wlen)
#define CHAR2INT(sp,n,nlen,w,wlen) \
CHAR2INT5(sp,sp->cw,n,nlen,w,wlen)
/* The maximum number of columns any character can take up on a screen. */
#define MAX_CHARACTER_COLUMNS 7
/*
* Event types.
*
* The program structure depends on the event loop being able to return
* E_EOF/E_ERR multiple times -- eventually enough things will end due
* to the events that vi will reach the command level for the screen, at
* which point the exit flags will be set and vi will exit.
*/
typedef enum {
E_NOTUSED = 0, /* Not set. */
E_CHARACTER, /* Input character: e_c set. */
E_EOF, /* End of input (NOT ^D). */
E_ERR, /* Input error. */
E_INTERRUPT, /* Interrupt. */
E_REPAINT, /* Repaint: e_flno, e_tlno set. */
E_SIGHUP, /* SIGHUP. */
E_SIGTERM, /* SIGTERM. */
E_STRING, /* Input string: e_csp, e_len set. */
E_TIMEOUT, /* Timeout. */
E_WRESIZE, /* Window resize. */
} e_event_t;
/*
* Character values.
*/
typedef enum {
K_NOTUSED = 0, /* Not set. */
K_BACKSLASH, /* \ */
K_CARAT, /* ^ */
K_CNTRLD, /* ^D */
K_CNTRLR, /* ^R */
K_CNTRLT, /* ^T */
K_CNTRLZ, /* ^Z */
K_COLON, /* : */
K_CR, /* \r */
K_ESCAPE, /* ^[ */
K_FORMFEED, /* \f */
K_HEXCHAR, /* ^X */
K_NL, /* \n */
K_RIGHTBRACE, /* } */
K_RIGHTPAREN, /* ) */
K_TAB, /* \t */
K_VERASE, /* set from tty: default ^H */
K_VKILL, /* set from tty: default ^U */
K_VLNEXT, /* set from tty: default ^V */
K_VWERASE, /* set from tty: default ^W */
K_ZERO /* 0 */
} e_key_t;
struct _event {
TAILQ_ENTRY(_event) q; /* Linked list of events. */
e_event_t e_event; /* Event type. */
union {
struct { /* Input character. */
CHAR_T c; /* Character. */
e_key_t value; /* Key type. */
#define CH_ABBREVIATED 0x01 /* Character is from an abbreviation. */
#define CH_MAPPED 0x02 /* Character is from a map. */
#define CH_NOMAP 0x04 /* Do not map the character. */
#define CH_QUOTED 0x08 /* Character is already quoted. */
u_int8_t flags;
} _e_ch;
#define e_ch _u_event._e_ch /* !!! The structure, not the char. */
#define e_c _u_event._e_ch.c
#define e_value _u_event._e_ch.value
#define e_flags _u_event._e_ch.flags
struct { /* Screen position, size. */
size_t lno1; /* Line number. */
size_t cno1; /* Column number. */
size_t lno2; /* Line number. */
size_t cno2; /* Column number. */
} _e_mark;
#define e_lno _u_event._e_mark.lno1 /* Single location. */
#define e_cno _u_event._e_mark.cno1
#define e_flno _u_event._e_mark.lno1 /* Text region. */
#define e_fcno _u_event._e_mark.cno1
#define e_tlno _u_event._e_mark.lno2
#define e_tcno _u_event._e_mark.cno2
struct { /* Input string. */
CHAR_T *asp; /* Allocated string. */
CHAR_T *csp; /* String. */
size_t len; /* String length. */
} _e_str;
#define e_asp _u_event._e_str.asp
#define e_csp _u_event._e_str.csp
#define e_len _u_event._e_str.len
} _u_event;
};
typedef struct _keylist {
e_key_t value; /* Special value. */
int ch; /* Key. */
} KEYLIST;
extern KEYLIST keylist[];
/* Return if more keys in queue. */
#define KEYS_WAITING(sp) ((sp)->gp->i_cnt != 0)
#define MAPPED_KEYS_WAITING(sp) \
(KEYS_WAITING(sp) && \
F_ISSET(&sp->gp->i_event[sp->gp->i_next].e_ch, CH_MAPPED))
/*
* Ex/vi commands are generally separated by whitespace characters. We
* can't use the standard isspace(3) macro because it returns true for
* characters like ^K in the ASCII character set. The POSIX isblank(3)
* has the same problem for non-ASCII locale, so we need a standalone one.
*/
static __inline int
cmdskip(CHAR_T ch)
{
return ch == ' ' || ch == '\t';
}
/* The "standard" tab width, for displaying things to users. */
#define STANDARD_TAB 6
/* Various special characters, messages. */
#define CH_BSEARCH '?' /* Backward search prompt. */
#define CH_CURSOR ' ' /* Cursor character. */
#define CH_ENDMARK '$' /* End of a range. */
#define CH_EXPROMPT ':' /* Ex prompt. */
#define CH_FSEARCH '/' /* Forward search prompt. */
#define CH_HEX '\030' /* Leading hex character. */
#define CH_LITERAL '\026' /* ASCII ^V. */
#define CH_NO 'n' /* No. */
#define CH_NOT_DIGIT 'a' /* A non-isdigit() character. */
#define CH_QUIT 'q' /* Quit. */
#define CH_YES 'y' /* Yes. */
/*
* Checking for interrupts means that we look at the bit that gets set if the
* screen code supports asynchronous events, and call back into the event code
* so that non-asynchronous screens get a chance to post the interrupt.
*
* INTERRUPT_CHECK is the number of lines "operated" on before checking for
* interrupts.
*/
#define INTERRUPT_CHECK 100
#define INTERRUPTED(sp) \
(F_ISSET((sp)->gp, G_INTERRUPTED) || \
(!v_event_get(sp, NULL, 0, EC_INTERRUPT) && \
F_ISSET((sp)->gp, G_INTERRUPTED)))
#define CLR_INTERRUPT(sp) \
F_CLR((sp)->gp, G_INTERRUPTED)
/* Flags describing types of characters being requested. */
#define EC_INTERRUPT 0x001 /* Checking for interrupts. */
#define EC_MAPCOMMAND 0x002 /* Apply the command map. */
#define EC_MAPINPUT 0x004 /* Apply the input map. */
#define EC_MAPNODIGIT 0x008 /* Return to a digit. */
#define EC_QUOTED 0x010 /* Try to quote next character */
#define EC_RAW 0x020 /* Any next character. XXX: not used. */
#define EC_TIMEOUT 0x040 /* Timeout to next character. */
/* Flags describing text input special cases. */
#define TXT_ADDNEWLINE 0x00000001 /* Replay starts on a new line. */
#define TXT_AICHARS 0x00000002 /* Leading autoindent chars. */
#define TXT_ALTWERASE 0x00000004 /* Option: altwerase. */
#define TXT_APPENDEOL 0x00000008 /* Appending after EOL. */
#define TXT_AUTOINDENT 0x00000010 /* Autoindent set this line. */
#define TXT_BACKSLASH 0x00000020 /* Backslashes escape characters. */
#define TXT_BEAUTIFY 0x00000040 /* Only printable characters. */
#define TXT_BS 0x00000080 /* Backspace returns the buffer. */
#define TXT_CEDIT 0x00000100 /* Can return TERM_CEDIT. */
#define TXT_CNTRLD 0x00000200 /* Control-D is a command. */
#define TXT_CNTRLT 0x00000400 /* Control-T is an indent special. */
#define TXT_CR 0x00000800 /* CR returns the buffer. */
#define TXT_DOTTERM 0x00001000 /* Leading '.' terminates the input. */
#define TXT_EMARK 0x00002000 /* End of replacement mark. */
#define TXT_EOFCHAR 0x00004000 /* ICANON set, return EOF character. */
#define TXT_ESCAPE 0x00008000 /* Escape returns the buffer. */
#define TXT_FILEC 0x00010000 /* Option: filec. */
#define TXT_INFOLINE 0x00020000 /* Editing the info line. */
#define TXT_MAPINPUT 0x00040000 /* Apply the input map. */
#define TXT_NLECHO 0x00080000 /* Echo the newline. */
#define TXT_NUMBER 0x00100000 /* Number the line. */
#define TXT_OVERWRITE 0x00200000 /* Overwrite characters. */
#define TXT_PROMPT 0x00400000 /* Display a prompt. */
#define TXT_RECORD 0x00800000 /* Record for replay. */
#define TXT_REPLACE 0x01000000 /* Replace; don't delete overwrite. */
#define TXT_REPLAY 0x02000000 /* Replay the last input. */
#define TXT_RESOLVE 0x04000000 /* Resolve the text into the file. */
#define TXT_SEARCHINCR 0x08000000 /* Incremental search. */
#define TXT_SHOWMATCH 0x10000000 /* Option: showmatch. */
#define TXT_TTYWERASE 0x20000000 /* Option: ttywerase. */
#define TXT_WRAPMARGIN 0x40000000 /* Option: wrapmargin. */
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