223 lines
7.9 KiB
C
223 lines
7.9 KiB
C
/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1991, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*
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* @(#)key.h 10.14 (Berkeley) 4/10/96
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*/
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/*
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* Fundamental character types.
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*
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* CHAR_T An integral type that can hold any character.
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* ARG_CHAR_T The type of a CHAR_T when passed as an argument using
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* traditional promotion rules. It should also be able
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* to be compared against any CHAR_T for equality without
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* problems.
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* MAX_CHAR_T The maximum value of any character.
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*
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* If no integral type can hold a character, don't even try the port.
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*/
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typedef u_char CHAR_T;
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typedef u_int ARG_CHAR_T;
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#define MAX_CHAR_T 0xff
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/* The maximum number of columns any character can take up on a screen. */
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#define MAX_CHARACTER_COLUMNS 4
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/*
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* Event types.
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*
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* The program structure depends on the event loop being able to return
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* E_EOF/E_ERR multiple times -- eventually enough things will end due
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* to the events that vi will reach the command level for the screen, at
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* which point the exit flags will be set and vi will exit.
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*/
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typedef enum {
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E_NOTUSED = 0, /* Not set. */
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E_CHARACTER, /* Input character: e_c set. */
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E_EOF, /* End of input (NOT ^D). */
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E_ERR, /* Input error. */
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E_INTERRUPT, /* Interrupt. */
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E_QUIT, /* Quit. */
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E_REPAINT, /* Repaint: e_flno, e_tlno set. */
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E_SIGHUP, /* SIGHUP. */
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E_SIGTERM, /* SIGTERM. */
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E_STRING, /* Input string: e_csp, e_len set. */
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E_TIMEOUT, /* Timeout. */
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E_WRITE, /* Write. */
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E_WRITEQUIT /* Write and quit. */
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} e_event_t;
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/*
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* Character values.
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*/
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typedef enum {
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K_NOTUSED = 0, /* Not set. */
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K_BACKSLASH, /* \ */
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K_CARAT, /* ^ */
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K_CNTRLD, /* ^D */
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K_CNTRLR, /* ^R */
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K_CNTRLT, /* ^T */
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K_CNTRLZ, /* ^Z */
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K_COLON, /* : */
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K_CR, /* \r */
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K_ESCAPE, /* ^[ */
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K_FORMFEED, /* \f */
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K_HEXCHAR, /* ^X */
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K_NL, /* \n */
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K_RIGHTBRACE, /* } */
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K_RIGHTPAREN, /* ) */
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K_TAB, /* \t */
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K_VERASE, /* set from tty: default ^H */
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K_VKILL, /* set from tty: default ^U */
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K_VLNEXT, /* set from tty: default ^V */
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K_VWERASE, /* set from tty: default ^W */
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K_ZERO /* 0 */
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} e_key_t;
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struct _event {
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TAILQ_ENTRY(_event) q; /* Linked list of events. */
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e_event_t e_event; /* Event type. */
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union {
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struct { /* Input character. */
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CHAR_T c; /* Character. */
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e_key_t value; /* Key type. */
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#define CH_ABBREVIATED 0x01 /* Character is from an abbreviation. */
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#define CH_MAPPED 0x02 /* Character is from a map. */
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#define CH_NOMAP 0x04 /* Do not map the character. */
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#define CH_QUOTED 0x08 /* Character is already quoted. */
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u_int8_t flags;
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} _e_ch;
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#define e_ch _u_event._e_ch /* !!! The structure, not the char. */
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#define e_c _u_event._e_ch.c
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#define e_value _u_event._e_ch.value
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#define e_flags _u_event._e_ch.flags
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struct { /* Screen position, size. */
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size_t lno1; /* Line number. */
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size_t cno1; /* Column number. */
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size_t lno2; /* Line number. */
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size_t cno2; /* Column number. */
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} _e_mark;
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#define e_lno _u_event._e_mark.lno1 /* Single location. */
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#define e_cno _u_event._e_mark.cno1
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#define e_flno _u_event._e_mark.lno1 /* Text region. */
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#define e_fcno _u_event._e_mark.cno1
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#define e_tlno _u_event._e_mark.lno2
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#define e_tcno _u_event._e_mark.cno2
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struct { /* Input string. */
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CHAR_T *asp; /* Allocated string. */
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CHAR_T *csp; /* String. */
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size_t len; /* String length. */
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} _e_str;
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#define e_asp _u_event._e_str.asp
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#define e_csp _u_event._e_str.csp
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#define e_len _u_event._e_str.len
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} _u_event;
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};
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typedef struct _keylist {
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e_key_t value; /* Special value. */
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CHAR_T ch; /* Key. */
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} KEYLIST;
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extern KEYLIST keylist[];
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/* Return if more keys in queue. */
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#define KEYS_WAITING(sp) ((sp)->gp->i_cnt != 0)
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#define MAPPED_KEYS_WAITING(sp) \
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(KEYS_WAITING(sp) && \
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F_ISSET(&sp->gp->i_event[sp->gp->i_next].e_ch, CH_MAPPED))
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/*
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* Ex/vi commands are generally separated by whitespace characters. We
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* can't use the standard isspace(3) macro because it returns true for
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* characters like ^K in the ASCII character set. The 4.4BSD isblank(3)
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* macro does exactly what we want, but it's not portable yet.
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*
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* XXX
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* Note side effect, ch is evaluated multiple times.
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*/
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#ifndef isblank
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#define isblank(ch) ((ch) == ' ' || (ch) == '\t')
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#endif
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/* The "standard" tab width, for displaying things to users. */
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#define STANDARD_TAB 6
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/* Various special characters, messages. */
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#define CH_BSEARCH '?' /* Backward search prompt. */
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#define CH_CURSOR ' ' /* Cursor character. */
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#define CH_ENDMARK '$' /* End of a range. */
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#define CH_EXPROMPT ':' /* Ex prompt. */
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#define CH_FSEARCH '/' /* Forward search prompt. */
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#define CH_HEX '\030' /* Leading hex character. */
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#define CH_LITERAL '\026' /* ASCII ^V. */
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#define CH_NO 'n' /* No. */
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#define CH_NOT_DIGIT 'a' /* A non-isdigit() character. */
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#define CH_QUIT 'q' /* Quit. */
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#define CH_YES 'y' /* Yes. */
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/*
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* Checking for interrupts means that we look at the bit that gets set if the
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* screen code supports asynchronous events, and call back into the event code
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* so that non-asynchronous screens get a chance to post the interrupt.
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*
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* INTERRUPT_CHECK is the number of lines "operated" on before checking for
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* interrupts.
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*/
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#define INTERRUPT_CHECK 100
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#define INTERRUPTED(sp) \
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(F_ISSET((sp)->gp, G_INTERRUPTED) || \
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(!v_event_get(sp, NULL, 0, EC_INTERRUPT) && \
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F_ISSET((sp)->gp, G_INTERRUPTED)))
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#define CLR_INTERRUPT(sp) \
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F_CLR((sp)->gp, G_INTERRUPTED)
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/* Flags describing types of characters being requested. */
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#define EC_INTERRUPT 0x001 /* Checking for interrupts. */
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#define EC_MAPCOMMAND 0x002 /* Apply the command map. */
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#define EC_MAPINPUT 0x004 /* Apply the input map. */
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#define EC_MAPNODIGIT 0x008 /* Return to a digit. */
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#define EC_QUOTED 0x010 /* Try to quote next character */
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#define EC_RAW 0x020 /* Any next character. */
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#define EC_TIMEOUT 0x040 /* Timeout to next character. */
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/* Flags describing text input special cases. */
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#define TXT_ADDNEWLINE 0x00000001 /* Replay starts on a new line. */
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#define TXT_AICHARS 0x00000002 /* Leading autoindent chars. */
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#define TXT_ALTWERASE 0x00000004 /* Option: altwerase. */
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#define TXT_APPENDEOL 0x00000008 /* Appending after EOL. */
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#define TXT_AUTOINDENT 0x00000010 /* Autoindent set this line. */
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#define TXT_BACKSLASH 0x00000020 /* Backslashes escape characters. */
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#define TXT_BEAUTIFY 0x00000040 /* Only printable characters. */
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#define TXT_BS 0x00000080 /* Backspace returns the buffer. */
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#define TXT_CEDIT 0x00000100 /* Can return TERM_CEDIT. */
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#define TXT_CNTRLD 0x00000200 /* Control-D is a command. */
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#define TXT_CNTRLT 0x00000400 /* Control-T is an indent special. */
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#define TXT_CR 0x00000800 /* CR returns the buffer. */
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#define TXT_DOTTERM 0x00001000 /* Leading '.' terminates the input. */
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#define TXT_EMARK 0x00002000 /* End of replacement mark. */
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#define TXT_EOFCHAR 0x00004000 /* ICANON set, return EOF character. */
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#define TXT_ESCAPE 0x00008000 /* Escape returns the buffer. */
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#define TXT_FILEC 0x00010000 /* Option: filec. */
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#define TXT_INFOLINE 0x00020000 /* Editing the info line. */
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#define TXT_MAPINPUT 0x00040000 /* Apply the input map. */
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#define TXT_NLECHO 0x00080000 /* Echo the newline. */
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#define TXT_NUMBER 0x00100000 /* Number the line. */
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#define TXT_OVERWRITE 0x00200000 /* Overwrite characters. */
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#define TXT_PROMPT 0x00400000 /* Display a prompt. */
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#define TXT_RECORD 0x00800000 /* Record for replay. */
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#define TXT_REPLACE 0x01000000 /* Replace; don't delete overwrite. */
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#define TXT_REPLAY 0x02000000 /* Replay the last input. */
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#define TXT_RESOLVE 0x04000000 /* Resolve the text into the file. */
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#define TXT_SEARCHINCR 0x08000000 /* Incremental search. */
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#define TXT_SHOWMATCH 0x10000000 /* Option: showmatch. */
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#define TXT_TTYWERASE 0x20000000 /* Option: ttywerase. */
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#define TXT_WRAPMARGIN 0x40000000 /* Option: wrapmargin. */
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