File: [local] / src / usr.bin / vim / Attic / getchar.c (download)
Revision 1.2, Sat Sep 21 06:22:59 1996 UTC (27 years, 8 months ago) by downsj
Branch: MAIN
CVS Tags: OPENBSD_2_2_BASE, OPENBSD_2_2, OPENBSD_2_1_BASE, OPENBSD_2_1, OPENBSD_2_0_BASE, OPENBSD_2_0
Changes since 1.1: +23 -13 lines
update to vim 4.4beta
|
/* $OpenBSD: getchar.c,v 1.2 1996/09/21 06:22:59 downsj Exp $ */
/* vi:set ts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
*/
/*
* getchar.c
*
* functions related with getting a character from the user/mapping/redo/...
*
* manipulations with redo buffer and stuff buffer
* mappings and abbreviations
*/
#include "vim.h"
#include "globals.h"
#include "proto.h"
#include "option.h"
/*
* structure used to store one block of the stuff/redo/macro buffers
*/
struct bufblock
{
struct bufblock *b_next; /* pointer to next bufblock */
char_u b_str[1]; /* contents (actually longer) */
};
#define MINIMAL_SIZE 20 /* minimal size for b_str */
/*
* header used for the stuff buffer and the redo buffer
*/
struct buffheader
{
struct bufblock bh_first; /* first (dummy) block of list */
struct bufblock *bh_curr; /* bufblock for appending */
int bh_index; /* index for reading */
int bh_space; /* space in bh_curr for appending */
};
static struct buffheader stuffbuff = {{NULL, {NUL}}, NULL, 0, 0};
static struct buffheader redobuff = {{NULL, {NUL}}, NULL, 0, 0};
static struct buffheader old_redobuff = {{NULL, {NUL}}, NULL, 0, 0};
static struct buffheader recordbuff = {{NULL, {NUL}}, NULL, 0, 0};
/*
* when block_redo is TRUE redo buffer will not be changed
* used by edit() to repeat insertions and 'V' command for redoing
*/
static int block_redo = FALSE;
/*
* structure used for mapping
*/
struct mapblock
{
struct mapblock *m_next; /* next mapblock */
char_u *m_keys; /* mapped from */
int m_keylen; /* strlen(m_keys) */
char_u *m_str; /* mapped to */
int m_mode; /* valid mode */
int m_noremap; /* if non-zero no re-mapping for m_str */
};
static struct mapblock maplist = {NULL, NULL, 0, NULL, 0, 0};
/* first dummy entry in maplist */
/*
* variables used by vgetorpeek() and flush_buffers()
*
* typebuf[] contains all characters that are not consumed yet.
* typebuf[typeoff] is the first valid character in typebuf[].
* typebuf[typeoff + typelen - 1] is the last valid char.
* typebuf[typeoff + typelen] must be NUL.
* The part in front may contain the result of mappings, abbreviations and
* @a commands. The length of this part is typemaplen.
* After it are characters that come from the terminal.
* no_abbr_cnt is the number of characters in typebuf that should not be
* considered for abbreviations.
* Some parts of typebuf may not be mapped. These parts are remembered in
* noremapbuf, which is the same length as typebuf and contains TRUE for the
* characters that are not to be remapped. noremapbuf[typeoff] is the first
* valid flag.
* (typebuf has been put in globals.h, because check_termcode() needs it).
*/
static char_u *noremapbuf = NULL; /* flags for typeahead characters */
#define TYPELEN_INIT (3 * (MAXMAPLEN + 3))
static char_u typebuf_init[TYPELEN_INIT]; /* initial typebuf */
static char_u noremapbuf_init[TYPELEN_INIT]; /* initial noremapbuf */
static int typemaplen = 0; /* nr of mapped characters in typebuf */
static int no_abbr_cnt = 0; /* nr of chars without abbrev. in typebuf */
static int last_recorded_len = 0; /* number of last recorded chars */
static void free_buff __ARGS((struct buffheader *));
static char_u *get_bufcont __ARGS((struct buffheader *, int));
static void add_buff __ARGS((struct buffheader *, char_u *));
static void add_num_buff __ARGS((struct buffheader *, long));
static void add_char_buff __ARGS((struct buffheader *, int));
static int read_stuff __ARGS((int));
static void start_stuff __ARGS((void));
static int read_redo __ARGS((int, int));
static void copy_redo __ARGS((int));
static void init_typebuf __ARGS((void));
static void gotchars __ARGS((char_u *, int));
static void may_sync_undo __ARGS((void));
static int vgetorpeek __ARGS((int));
static int inchar __ARGS((char_u *, int, long));
static void map_free __ARGS((struct mapblock *));
static void showmap __ARGS((struct mapblock *));
/*
* free and clear a buffer
*/
static void
free_buff(buf)
struct buffheader *buf;
{
register struct bufblock *p, *np;
for (p = buf->bh_first.b_next; p != NULL; p = np)
{
np = p->b_next;
vim_free(p);
}
buf->bh_first.b_next = NULL;
}
/*
* return the contents of a buffer as a single string
*/
static char_u *
get_bufcont(buffer, dozero)
struct buffheader *buffer;
int dozero; /* count == zero is not an error */
{
long_u count = 0;
char_u *p = NULL;
char_u *p2;
char_u *str;
struct bufblock *bp;
/* compute the total length of the string */
for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next)
count += STRLEN(bp->b_str);
if ((count || dozero) && (p = lalloc(count + 1, TRUE)) != NULL)
{
p2 = p;
for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next)
for (str = bp->b_str; *str; )
*p2++ = *str++;
*p2 = NUL;
}
return (p);
}
/*
* return the contents of the record buffer as a single string
* and clear the record buffer
*/
char_u *
get_recorded()
{
char_u *p;
size_t len;
p = get_bufcont(&recordbuff, TRUE);
free_buff(&recordbuff);
/*
* Remove the characters that were added the last time, these must be the
* (possibly mapped) characters that stopped recording.
*/
len = STRLEN(p);
if ((int)len >= last_recorded_len)
p[len - last_recorded_len] = NUL;
return (p);
}
/*
* return the contents of the redo buffer as a single string
*/
char_u *
get_inserted()
{
return(get_bufcont(&redobuff, FALSE));
}
/*
* add string "s" after the current block of buffer "buf"
*/
static void
add_buff(buf, s)
register struct buffheader *buf;
char_u *s;
{
struct bufblock *p;
long_u n;
long_u len;
if ((n = STRLEN(s)) == 0) /* don't add empty strings */
return;
if (buf->bh_first.b_next == NULL) /* first add to list */
{
buf->bh_space = 0;
buf->bh_curr = &(buf->bh_first);
}
else if (buf->bh_curr == NULL) /* buffer has already been read */
{
EMSG("Add to read buffer");
return;
}
else if (buf->bh_index != 0)
STRCPY(buf->bh_first.b_next->b_str,
buf->bh_first.b_next->b_str + buf->bh_index);
buf->bh_index = 0;
if (buf->bh_space >= (int)n)
{
strcat((char *)buf->bh_curr->b_str, (char *)s);
buf->bh_space -= n;
}
else
{
if (n < MINIMAL_SIZE)
len = MINIMAL_SIZE;
else
len = n;
p = (struct bufblock *)lalloc((long_u)(sizeof(struct bufblock) + len), TRUE);
if (p == NULL)
return; /* no space, just forget it */
buf->bh_space = len - n;
STRCPY(p->b_str, s);
p->b_next = buf->bh_curr->b_next;
buf->bh_curr->b_next = p;
buf->bh_curr = p;
}
return;
}
static void
add_num_buff(buf, n)
struct buffheader *buf;
long n;
{
char_u number[32];
sprintf((char *)number, "%ld", n);
add_buff(buf, number);
}
static void
add_char_buff(buf, c)
struct buffheader *buf;
int c;
{
char_u temp[4];
/*
* translate special key code into three byte sequence
*/
if (IS_SPECIAL(c) || c == K_SPECIAL || c == NUL)
{
temp[0] = K_SPECIAL;
temp[1] = K_SECOND(c);
temp[2] = K_THIRD(c);
temp[3] = NUL;
}
else
{
temp[0] = c;
temp[1] = NUL;
}
add_buff(buf, temp);
}
/*
* get one character from the stuff buffer
* If advance == TRUE go to the next char.
*/
static int
read_stuff(advance)
int advance;
{
register char_u c;
register struct bufblock *curr;
if (stuffbuff.bh_first.b_next == NULL) /* buffer is empty */
return NUL;
curr = stuffbuff.bh_first.b_next;
c = curr->b_str[stuffbuff.bh_index];
if (advance)
{
if (curr->b_str[++stuffbuff.bh_index] == NUL)
{
stuffbuff.bh_first.b_next = curr->b_next;
vim_free(curr);
stuffbuff.bh_index = 0;
}
}
return c;
}
/*
* prepare stuff buffer for reading (if it contains something)
*/
static void
start_stuff()
{
if (stuffbuff.bh_first.b_next != NULL)
{
stuffbuff.bh_curr = &(stuffbuff.bh_first);
stuffbuff.bh_space = 0;
}
}
/*
* check if the stuff buffer is empty
*/
int
stuff_empty()
{
return (stuffbuff.bh_first.b_next == NULL);
}
/*
* Remove the contents of the stuff buffer and the mapped characters in the
* typeahead buffer (used in case of an error). If 'typeahead' is true,
* flush all typeahead characters (used when interrupted by a CTRL-C).
*/
void
flush_buffers(typeahead)
int typeahead;
{
init_typebuf();
start_stuff();
while (read_stuff(TRUE) != NUL)
;
if (typeahead) /* remove all typeahead */
{
/*
* We have to get all characters, because we may delete the first
* part of an escape sequence.
* In an xterm we get one char at a time and we have to get them
* all.
*/
while (inchar(typebuf, MAXMAPLEN, 10L))
;
typeoff = MAXMAPLEN;
typelen = 0;
}
else /* remove mapped characters only */
{
typeoff += typemaplen;
typelen -= typemaplen;
}
typemaplen = 0;
no_abbr_cnt = 0;
}
/*
* The previous contents of the redo buffer is kept in old_redobuffer.
* This is used for the CTRL-O <.> command in insert mode.
*/
void
ResetRedobuff()
{
if (!block_redo)
{
free_buff(&old_redobuff);
old_redobuff = redobuff;
redobuff.bh_first.b_next = NULL;
}
}
void
AppendToRedobuff(s)
char_u *s;
{
if (!block_redo)
add_buff(&redobuff, s);
}
void
AppendCharToRedobuff(c)
int c;
{
if (!block_redo)
add_char_buff(&redobuff, c);
}
void
AppendNumberToRedobuff(n)
long n;
{
if (!block_redo)
add_num_buff(&redobuff, n);
}
void
stuffReadbuff(s)
char_u *s;
{
add_buff(&stuffbuff, s);
}
void
stuffcharReadbuff(c)
int c;
{
add_char_buff(&stuffbuff, c);
}
void
stuffnumReadbuff(n)
long n;
{
add_num_buff(&stuffbuff, n);
}
/*
* Read a character from the redo buffer.
* The redo buffer is left as it is.
* if init is TRUE, prepare for redo, return FAIL if nothing to redo, OK
* otherwise
* if old is TRUE, use old_redobuff instead of redobuff
*/
static int
read_redo(init, old_redo)
int init;
int old_redo;
{
static struct bufblock *bp;
static char_u *p;
int c;
if (init)
{
if (old_redo)
bp = old_redobuff.bh_first.b_next;
else
bp = redobuff.bh_first.b_next;
if (bp == NULL)
return FAIL;
p = bp->b_str;
return OK;
}
if ((c = *p) != NUL)
{
if (c == K_SPECIAL)
{
c = TO_SPECIAL(p[1], p[2]);
p += 2;
}
if (*++p == NUL && bp->b_next != NULL)
{
bp = bp->b_next;
p = bp->b_str;
}
}
return c;
}
/*
* copy the rest of the redo buffer into the stuff buffer (could be done faster)
* if old_redo is TRUE, use old_redobuff instead of redobuff
*/
static void
copy_redo(old_redo)
int old_redo;
{
register int c;
while ((c = read_redo(FALSE, old_redo)) != NUL)
stuffcharReadbuff(c);
}
/*
* Stuff the redo buffer into the stuffbuff.
* Insert the redo count into the command.
* If 'old_redo' is TRUE, the last but one command is repeated
* instead of the last command (inserting text). This is used for
* CTRL-O <.> in insert mode
*
* return FAIL for failure, OK otherwise
*/
int
start_redo(count, old_redo)
long count;
int old_redo;
{
register int c;
if (read_redo(TRUE, old_redo) == FAIL) /* init the pointers; return if nothing to redo */
return FAIL;
c = read_redo(FALSE, old_redo);
/* copy the buffer name, if present */
if (c == '"')
{
add_buff(&stuffbuff, (char_u *)"\"");
c = read_redo(FALSE, old_redo);
/* if a numbered buffer is used, increment the number */
if (c >= '1' && c < '9')
++c;
add_char_buff(&stuffbuff, c);
c = read_redo(FALSE, old_redo);
}
if (c == 'v') /* redo Visual */
{
VIsual = curwin->w_cursor;
VIsual_active = TRUE;
redo_VIsual_busy = TRUE;
c = read_redo(FALSE, old_redo);
}
/* try to enter the count (in place of a previous count) */
if (count)
{
while (isdigit(c)) /* skip "old" count */
c = read_redo(FALSE, old_redo);
add_num_buff(&stuffbuff, count);
}
/* copy from the redo buffer into the stuff buffer */
add_char_buff(&stuffbuff, c);
copy_redo(old_redo);
return OK;
}
/*
* Repeat the last insert (R, o, O, a, A, i or I command) by stuffing
* the redo buffer into the stuffbuff.
* return FAIL for failure, OK otherwise
*/
int
start_redo_ins()
{
register int c;
if (read_redo(TRUE, FALSE) == FAIL)
return FAIL;
start_stuff();
/* skip the count and the command character */
while ((c = read_redo(FALSE, FALSE)) != NUL)
{
c = TO_UPPER(c);
if (vim_strchr((char_u *)"AIRO", c) != NULL)
{
if (c == 'O')
stuffReadbuff(NL_STR);
break;
}
}
/* copy the typed text from the redo buffer into the stuff buffer */
copy_redo(FALSE);
block_redo = TRUE;
return OK;
}
void
set_redo_ins()
{
block_redo = TRUE;
}
void
stop_redo_ins()
{
block_redo = FALSE;
}
/*
* Initialize typebuf to point to typebuf_init.
* Alloc() cannot be used here: In out-of-memory situations it would
* be impossible to type anything.
*/
static void
init_typebuf()
{
if (typebuf == NULL)
{
typebuf = typebuf_init;
noremapbuf = noremapbuf_init;
typebuflen = TYPELEN_INIT;
typelen = 0;
typeoff = 0;
}
}
/*
* insert a string in position 'offset' in the typeahead buffer (for "@r"
* and ":normal" command, vgetorpeek() and check_termcode())
*
* If noremap is 0, new string can be mapped again.
* If noremap is -1, new string cannot be mapped again.
* If noremap is >0, that many characters of the new string cannot be mapped.
*
* If nottyped is TRUE, the string does not return KeyTyped (don't use when
* offset is non-zero!).
*
* return FAIL for failure, OK otherwise
*/
int
ins_typebuf(str, noremap, offset, nottyped)
char_u *str;
int noremap;
int offset;
int nottyped;
{
register char_u *s1, *s2;
register int newlen;
register int addlen;
register int i;
register int newoff;
init_typebuf();
addlen = STRLEN(str);
/*
* Easy case: there is room in front of typebuf[typeoff]
*/
if (offset == 0 && addlen <= typeoff)
{
typeoff -= addlen;
vim_memmove(typebuf + typeoff, str, (size_t)addlen);
}
/*
* Need to allocate new buffer.
* In typebuf there must always be room for MAXMAPLEN + 4 characters.
* We add some extra room to avoid having to allocate too often.
*/
else
{
newoff = MAXMAPLEN + 4;
newlen = typelen + addlen + newoff + 2 * (MAXMAPLEN + 4);
if (newlen < 0) /* string is getting too long */
{
emsg(e_toocompl); /* also calls flush_buffers */
setcursor();
return FAIL;
}
s1 = alloc(newlen);
if (s1 == NULL) /* out of memory */
return FAIL;
s2 = alloc(newlen);
if (s2 == NULL) /* out of memory */
{
vim_free(s1);
return FAIL;
}
typebuflen = newlen;
/* copy the old chars, before the insertion point */
vim_memmove(s1 + newoff, typebuf + typeoff, (size_t)offset);
/* copy the new chars */
vim_memmove(s1 + newoff + offset, str, (size_t)addlen);
/* copy the old chars, after the insertion point, including
* the NUL at the end */
vim_memmove(s1 + newoff + offset + addlen, typebuf + typeoff + offset,
(size_t)(typelen - offset + 1));
if (typebuf != typebuf_init)
vim_free(typebuf);
typebuf = s1;
vim_memmove(s2 + newoff, noremapbuf + typeoff, (size_t)offset);
vim_memmove(s2 + newoff + offset + addlen,
noremapbuf + typeoff + offset, (size_t)(typelen - offset));
if (noremapbuf != noremapbuf_init)
vim_free(noremapbuf);
noremapbuf = s2;
typeoff = newoff;
}
typelen += addlen;
/*
* Adjust noremapbuf[] for the new characters:
* If noremap < 0: all the new characters are flagged not remappable
* If noremap == 0: all the new characters are flagged mappable
* If noremap > 0: 'noremap' characters are flagged not remappable, the
* rest mappable
*/
if (noremap < 0) /* length not specified */
noremap = addlen;
for (i = 0; i < addlen; ++i)
noremapbuf[typeoff + i + offset] = (noremap-- > 0);
/* this is only correct for offset == 0! */
if (nottyped) /* the inserted string is not typed */
typemaplen += addlen;
if (no_abbr_cnt && offset == 0) /* and not used for abbreviations */
no_abbr_cnt += addlen;
return OK;
}
/*
* Return TRUE if there are no characters in the typeahead buffer that have
* not been typed (result from a mapping or come from ":normal").
*/
int
typebuf_typed()
{
return typemaplen == 0;
}
/*
* remove "len" characters from typebuf[typeoff + offset]
*/
void
del_typebuf(len, offset)
int len;
int offset;
{
int i;
typelen -= len;
/*
* Easy case: Just increase typeoff.
*/
if (offset == 0 && typebuflen - (typeoff + len) >= MAXMAPLEN + 3)
typeoff += len;
/*
* Have to move the characters in typebuf[] and noremapbuf[]
*/
else
{
i = typeoff + offset;
/*
* Leave some extra room at the end to avoid reallocation.
*/
if (typeoff > MAXMAPLEN)
{
vim_memmove(typebuf + MAXMAPLEN, typebuf + typeoff, (size_t)offset);
vim_memmove(noremapbuf + MAXMAPLEN, noremapbuf + typeoff,
(size_t)offset);
typeoff = MAXMAPLEN;
}
/* adjust typebuf (include the NUL at the end) */
vim_memmove(typebuf + typeoff + offset, typebuf + i + len,
(size_t)(typelen - offset + 1));
/* adjust noremapbuf[] */
vim_memmove(noremapbuf + typeoff + offset, noremapbuf + i + len,
(size_t)(typelen - offset));
}
if (typemaplen > offset) /* adjust typemaplen */
{
if (typemaplen < offset + len)
typemaplen = offset;
else
typemaplen -= len;
}
if (no_abbr_cnt > offset) /* adjust no_abbr_cnt */
{
if (no_abbr_cnt < offset + len)
no_abbr_cnt = offset;
else
no_abbr_cnt -= len;
}
}
/*
* Write typed characters to script file.
* If recording is on put the character in the recordbuffer.
*/
static void
gotchars(s, len)
char_u *s;
int len;
{
int c;
char_u buf[2];
/* remember how many chars were last recorded */
if (Recording)
last_recorded_len += len;
buf[1] = NUL;
while (len--)
{
c = *s++;
updatescript(c);
if (Recording)
{
buf[0] = c;
add_buff(&recordbuff, buf);
}
}
may_sync_undo();
}
/*
* Sync undo. Called when typed characters are obtained from the typeahead
* buffer, or when a menu is used.
* Do not sync in insert mode, unless cursor key has been used.
* Also don't sync while reading a script file.
*/
static void
may_sync_undo()
{
if ((!(State & (INSERT + CMDLINE)) || arrow_used) &&
scriptin[curscript] == NULL)
u_sync();
}
/*
* open new script file for ":so!" command
* return OK on success, FAIL on error
*/
int
openscript(name)
char_u *name;
{
int oldcurscript;
if (curscript + 1 == NSCRIPT)
{
emsg(e_nesting);
return FAIL;
}
else
{
if (scriptin[curscript] != NULL) /* already reading script */
++curscript;
/* use NameBuff for expanded name */
expand_env(name, NameBuff, MAXPATHL);
if ((scriptin[curscript] = fopen((char *)NameBuff, READBIN)) == NULL)
{
emsg2(e_notopen, name);
if (curscript)
--curscript;
return FAIL;
}
/*
* With command ":g/pat/so! file" we have to execute the
* commands from the file now.
*/
if (global_busy)
{
State = NORMAL;
oldcurscript = curscript;
do
{
normal();
vpeekc(); /* check for end of file */
}
while (scriptin[oldcurscript]);
State = CMDLINE;
}
}
return OK;
}
/*
* updatescipt() is called when a character can be written into the script file
* or when we have waited some time for a character (c == 0)
*
* All the changed memfiles are synced if c == 0 or when the number of typed
* characters reaches 'updatecount' and 'updatecount' is non-zero.
*/
void
updatescript(c)
int c;
{
static int count = 0;
if (c && scriptout)
putc(c, scriptout);
if (c == 0 || (p_uc > 0 && ++count >= p_uc))
{
ml_sync_all(c == 0, TRUE);
count = 0;
}
}
#define K_NEEDMORET -1 /* keylen value for incomplete key-code */
#define M_NEEDMORET -2 /* keylen value for incomplete mapping */
static int old_char = -1; /* ungotten character */
int
vgetc()
{
int c, c2;
mod_mask = 0x0;
last_recorded_len = 0;
for (;;) /* this is done twice if there are modifiers */
{
if (mod_mask) /* no mapping after modifier has been read */
{
++no_mapping;
++allow_keys;
}
c = vgetorpeek(TRUE);
if (mod_mask)
{
--no_mapping;
--allow_keys;
}
/* Get two extra bytes for special keys */
if (c == K_SPECIAL)
{
++no_mapping;
c2 = vgetorpeek(TRUE); /* no mapping for these chars */
c = vgetorpeek(TRUE);
--no_mapping;
if (c2 == KS_MODIFIER)
{
mod_mask = c;
continue;
}
c = TO_SPECIAL(c2, c);
}
#ifdef MSDOS
/*
* If K_NUL was typed, it is replaced by K_NUL, 3 in mch_inchar().
* Delete the 3 here.
*/
else if (c == K_NUL && vpeekc() == 3)
(void)vgetorpeek(TRUE);
#endif
return check_shifted_spec_key(c);
}
}
int
vpeekc()
{
return (vgetorpeek(FALSE));
}
/*
* Call vpeekc() without causing anything to be mapped.
* Return TRUE if a character is available, FALSE otherwise.
*/
int
char_avail()
{
int retval;
++no_mapping;
retval = vgetorpeek(FALSE);
--no_mapping;
return (retval != NUL);
}
void
vungetc(c) /* unget one character (can only be done once!) */
int c;
{
old_char = c;
}
/*
* get a character: 1. from a previously ungotten character
* 2. from the stuffbuffer
* 3. from the typeahead buffer
* 4. from the user
*
* if "advance" is TRUE (vgetc()):
* really get the character.
* KeyTyped is set to TRUE in the case the user typed the key.
* KeyStuffed is TRUE if the character comes from the stuff buffer.
* if "advance" is FALSE (vpeekc()):
* just look whether there is a character available.
*/
static int
vgetorpeek(advance)
int advance;
{
register int c, c1;
int keylen = 0; /* init for gcc */
#ifdef AMIGA
char_u *s;
#endif
register struct mapblock *mp;
int timedout = FALSE; /* waited for more than 1 second
for mapping to complete */
int mapdepth = 0; /* check for recursive mapping */
int mode_deleted = FALSE; /* set when mode has been deleted */
int local_State;
register int mlen;
int max_mlen;
int i;
#ifdef USE_GUI
int idx;
#endif
/*
* VISUAL state is never set, it is used only here, therefore a check is
* made if NORMAL state is actually VISUAL state.
*/
local_State = State;
if ((State & NORMAL) && VIsual_active)
local_State = VISUAL;
/*
* get a character: 1. from a previously ungotten character
*/
if (old_char >= 0)
{
c = old_char;
if (advance)
old_char = -1;
return c;
}
if (advance)
KeyStuffed = FALSE;
init_typebuf();
start_stuff();
if (advance && typemaplen == 0)
Exec_reg = FALSE;
do
{
/*
* get a character: 2. from the stuffbuffer
*/
c = read_stuff(advance);
if (c != NUL && !got_int)
{
if (advance)
{
KeyTyped = FALSE;
KeyStuffed = TRUE;
}
if (no_abbr_cnt == 0)
no_abbr_cnt = 1; /* no abbreviations now */
}
else
{
/*
* Loop until we either find a matching mapped key, or we
* are sure that it is not a mapped key.
* If a mapped key sequence is found we go back to the start to
* try re-mapping.
*/
for (;;)
{
mch_breakcheck(); /* check for CTRL-C */
if (got_int)
{
c = inchar(typebuf, MAXMAPLEN, 0L); /* flush all input */
/*
* If inchar returns TRUE (script file was active) or we are
* inside a mapping, get out of insert mode.
* Otherwise we behave like having gotten a CTRL-C.
* As a result typing CTRL-C in insert mode will
* really insert a CTRL-C.
*/
if ((c || typemaplen) && (State & (INSERT + CMDLINE)))
c = ESC;
else
c = Ctrl('C');
flush_buffers(TRUE); /* flush all typeahead */
break;
}
else if (typelen > 0) /* check for a mappable key sequence */
{
/*
* walk through the maplist until we find an
* entry that matches.
*
* Don't look for mappings if:
* - timed out
* - no_mapping set: mapping disabled (e.g. for CTRL-V)
* - typebuf[typeoff] should not be remapped
* - in insert or cmdline mode and 'paste' option set
* - waiting for "hit return to continue" and CR or SPACE
* typed
* - waiting for a char with --more--
* - in Ctrl-X mode, and we get a valid char for that mode
*/
mp = NULL;
max_mlen = 0;
if (!timedout && no_mapping == 0 && (typemaplen == 0 ||
(p_remap && noremapbuf[typeoff] == FALSE))
&& !(p_paste && (State & (INSERT + CMDLINE)))
&& !(State == HITRETURN && (typebuf[typeoff] == CR
|| typebuf[typeoff] == ' '))
&& State != ASKMORE
#ifdef INSERT_EXPAND
&& !(ctrl_x_mode && is_ctrl_x_key(typebuf[typeoff]))
#endif
)
{
c1 = typebuf[typeoff];
#ifdef HAVE_LANGMAP
LANGMAP_ADJUST(c1, TRUE);
#endif
for (mp = maplist.m_next; mp; mp = mp->m_next)
{
/*
* Only consider an entry if
* - the first character matches and
* - it is not an abbreviation and
* - it is for the current state
*/
if ( mp->m_keys[0] == c1 &&
!(mp->m_mode & ABBREV) &&
(mp->m_mode & local_State))
{
int n;
#ifdef HAVE_LANGMAP
int c2;
#endif
/* find the match length of this mapping */
for (mlen = 1; mlen < typelen; ++mlen)
{
#ifdef HAVE_LANGMAP
c2 = typebuf[typeoff + mlen];
LANGMAP_ADJUST(c2, TRUE);
if (mp->m_keys[mlen] != c2)
#else
if (mp->m_keys[mlen] !=
typebuf[typeoff + mlen])
#endif
break;
}
/* if one of the typed keys cannot be
* remapped, skip the entry */
for (n = 0; n < mlen; ++n)
if (noremapbuf[typeoff + n] == TRUE)
break;
if (n != mlen)
continue;
/* (partly) match found */
keylen = mp->m_keylen;
if (mlen == (keylen > typelen ?
typelen : keylen))
{
/* partial match, need more chars */
if (keylen > typelen)
keylen = M_NEEDMORET;
break;
}
/* no match, may have to check for
* termcode at next character */
if (max_mlen < mlen)
max_mlen = mlen;
}
}
}
if (mp == NULL) /* no match found */
{
/*
* check if we have a terminal code, when
* mapping is allowed,
* keys have not been mapped,
* and not an ESC sequence, not in insert mode or
* p_ek is on,
* and when not timed out,
*/
if ((no_mapping == 0 || allow_keys != 0) &&
(typemaplen == 0 ||
(p_remap && noremapbuf[typeoff] == FALSE)) &&
!timedout)
keylen = check_termcode(max_mlen + 1);
else
keylen = 0;
if (keylen == 0) /* no matching terminal code */
{
#ifdef AMIGA /* check for window bounds report */
if (typemaplen == 0 &&
(typebuf[typeoff] & 0xff) == CSI)
{
for (s = typebuf + typeoff + 1;
s < typebuf + typeoff + typelen &&
(isdigit(*s) || *s == ';' || *s == ' ');
++s)
;
if (*s == 'r' || *s == '|') /* found one */
{
del_typebuf((int)(s + 1 -
(typebuf + typeoff)), 0);
/* get size and redraw screen */
set_winsize(0, 0, FALSE);
continue;
}
if (*s == NUL) /* need more characters */
keylen = K_NEEDMORET;
}
if (keylen >= 0)
#endif
{
/*
* get a character: 3. from the typeahead buffer
*/
c = typebuf[typeoff] & 255;
if (advance) /* remove chars from typebuf */
{
if (typemaplen)
KeyTyped = FALSE;
else
{
KeyTyped = TRUE;
/* write char to script file(s) */
gotchars(typebuf + typeoff, 1);
}
del_typebuf(1, 0);
}
break; /* got character, break for loop */
}
}
if (keylen > 0) /* full matching terminal code */
{
#ifdef USE_GUI
if (typebuf[typeoff] == K_SPECIAL &&
typebuf[typeoff + 1] == KS_MENU)
{
/*
* Using a menu may cause a break in undo!
* It's like using gotchars(), but without
* recording or writing to a script file.
*/
may_sync_undo();
del_typebuf(3, 0);
idx = gui_get_menu_index(current_menu,
local_State);
if (idx != MENU_INDEX_INVALID)
{
ins_typebuf(current_menu->strings[idx],
current_menu->noremap[idx] ? -1 : 0,
0, TRUE);
}
}
#endif /* USE_GUI */
continue; /* try mapping again */
}
/* partial match: get some more characters */
keylen = K_NEEDMORET;
}
/* complete match */
if (keylen >= 0 && keylen <= typelen)
{
/* write chars to script file(s) */
if (keylen > typemaplen)
gotchars(typebuf + typeoff + typemaplen,
keylen - typemaplen);
del_typebuf(keylen, 0); /* remove the mapped keys */
/*
* Put the replacement string in front of mapstr.
* The depth check catches ":map x y" and ":map y x".
*/
if (++mapdepth >= p_mmd)
{
EMSG("recursive mapping");
if (State == CMDLINE)
redrawcmdline();
else
setcursor();
flush_buffers(FALSE);
mapdepth = 0; /* for next one */
c = -1;
break;
}
/*
* Insert the 'to' part in the typebuf.
* If 'from' field is the same as the start of the
* 'to' field, don't remap the first character.
* If m_noremap is set, don't remap the whole 'to'
* part.
*/
if (ins_typebuf(mp->m_str, mp->m_noremap ? -1 :
STRNCMP(mp->m_str, mp->m_keys,
(size_t)keylen) ? 0 : 1,
0, TRUE) == FAIL)
{
c = -1;
break;
}
continue;
}
}
/*
* special case: if we get an <ESC> in insert mode and there
* are no more characters at once, we pretend to go out of
* insert mode. This prevents the one second delay after
* typing an <ESC>. If we get something after all, we may
* have to redisplay the mode. That the cursor is in the wrong
* place does not matter.
*/
c = 0;
if (advance && typelen == 1 && typebuf[typeoff] == ESC &&
!no_mapping && typemaplen == 0 && (State & INSERT) &&
(p_timeout || (keylen == K_NEEDMORET && p_ttimeout)) &&
(c = inchar(typebuf + typeoff + typelen, 3, 0L)) == 0)
{
if (p_smd)
{
delmode();
mode_deleted = TRUE;
}
if (curwin->w_cursor.col != 0) /* move cursor one left if
possible */
{
if (curwin->w_col)
{
if (did_ai)
{
/*
* We are expecting to truncate the trailing
* white-space, so find the last non-white
* character -- webb
*/
colnr_t col, vcol;
char_u *ptr;
col = vcol = curwin->w_col = 0;
ptr = ml_get_curline();
while (col < curwin->w_cursor.col)
{
if (!vim_iswhite(ptr[col]))
curwin->w_col = vcol;
vcol += lbr_chartabsize(ptr + col,
(colnr_t)vcol);
++col;
}
if (curwin->w_p_nu)
curwin->w_col += 8;
}
else
--curwin->w_col;
}
else if (curwin->w_p_wrap && curwin->w_row)
{
--curwin->w_row;
curwin->w_col = Columns - 1;
}
}
setcursor();
flushbuf();
}
typelen += c;
/* buffer full, don't map */
if (typelen >= typemaplen + MAXMAPLEN)
{
timedout = TRUE;
continue;
}
/*
* get a character: 4. from the user
*/
/*
* If we have a partial match (and are going to wait for more
* input from the user), show the partially matched characters
* to the user with showcmd -- webb.
*/
i = 0;
if (typelen > 0 && (State & (NORMAL | INSERT)) && advance)
{
push_showcmd();
while (i < typelen)
(void)add_to_showcmd(typebuf[typeoff + i++], TRUE);
}
c = inchar(typebuf + typeoff + typelen,
typemaplen + MAXMAPLEN - typelen,
!advance
? 0
: ((typelen == 0 || !(p_timeout || (p_ttimeout &&
keylen == K_NEEDMORET)))
? -1L
: ((keylen == K_NEEDMORET && p_ttm >= 0)
? p_ttm
: p_tm)));
if (i)
pop_showcmd();
if (c <= NUL) /* no character available */
{
if (!advance)
break;
if (typelen) /* timed out */
{
timedout = TRUE;
continue;
}
}
else
{ /* allow mapping for just typed characters */
while (typebuf[typeoff + typelen] != NUL)
noremapbuf[typeoff + typelen++] = FALSE;
}
} /* for (;;) */
} /* if (!character from stuffbuf) */
/* if advance is FALSE don't loop on NULs */
} while (c < 0 || (advance && c == NUL));
/*
* The "INSERT" message is taken care of here:
* if we return an ESC to exit insert mode, the message is deleted
* if we don't return an ESC but deleted the message before, redisplay it
*/
if (p_smd && (State & INSERT))
{
if (c == ESC && !mode_deleted && !no_mapping)
delmode();
else if (c != ESC && mode_deleted)
showmode();
}
return c;
}
/*
* inchar() - get one character from
* 1. a scriptfile
* 2. the keyboard
*
* As much characters as we can get (upto 'maxlen') are put in buf and
* NUL terminated (buffer length must be 'maxlen' + 1).
* Minimum for 'maxlen' is 3!!!!
*
* If we got an interrupt all input is read until none is available.
*
* If wait_time == 0 there is no waiting for the char.
* If wait_time == n we wait for n msec for a character to arrive.
* If wait_time == -1 we wait forever for a character to arrive.
*
* Return the number of obtained characters.
*/
static int
inchar(buf, maxlen, wait_time)
char_u *buf;
int maxlen;
long wait_time; /* milli seconds */
{
int len = 0; /* init for GCC */
int retesc = FALSE; /* return ESC with gotint */
register int c;
register int i;
if (wait_time == -1L || wait_time > 100L) /* flush output before waiting */
{
cursor_on();
flushbuf();
}
/*
* Don't reset these when at the hit-return prompt, otherwise a endless
* recursive loop may result (write error in swapfile, hit-return, timeout
* on char wait, flush swapfile, write error....).
*/
if (State != HITRETURN)
{
did_outofmem_msg = FALSE; /* display out of memory message (again) */
did_swapwrite_msg = FALSE; /* display swap file write error again */
}
undo_off = FALSE; /* restart undo now */
/*
* first try script file
* If interrupted: Stop reading script files.
*/
c = -1;
while (scriptin[curscript] != NULL && c < 0)
{
if (got_int || (c = getc(scriptin[curscript])) < 0) /* reached EOF */
{
/* when reading script file is interrupted, return an ESC to
get back to normal mode */
if (got_int)
retesc = TRUE;
fclose(scriptin[curscript]);
scriptin[curscript] = NULL;
if (curscript > 0)
--curscript;
}
else
{
buf[0] = c;
len = 1;
}
}
if (c < 0) /* did not get a character from script */
{
/*
* If we got an interrupt, skip all previously typed characters and
* return TRUE if quit reading script file.
*/
if (got_int) /* skip typed characters */
{
while (mch_inchar(buf, maxlen, 0L))
;
return retesc;
}
/* fill up to a third of the buffer, because each character may be
* tripled below */
len = mch_inchar(buf, maxlen / 3, wait_time);
}
/*
* Two characters are special: NUL and K_SPECIAL.
* Replace NUL by K_SPECIAL KS_ZERO K_FILLER
* Replace K_SPECIAL by K_SPECIAL KS_SPECIAL K_FILLER
* Don't replace K_SPECIAL when reading a script file.
*/
for (i = len; --i >= 0; ++buf)
{
if (buf[0] == NUL || (buf[0] == K_SPECIAL && c < 0))
{
vim_memmove(buf + 3, buf + 1, (size_t)i);
buf[2] = K_THIRD(buf[0]);
buf[1] = K_SECOND(buf[0]);
buf[0] = K_SPECIAL;
buf += 2;
len += 2;
}
}
*buf = NUL; /* add trailing NUL */
return len;
}
/*
* map[!] : show all key mappings
* map[!] {lhs} : show key mapping for {lhs}
* map[!] {lhs} {rhs} : set key mapping for {lhs} to {rhs}
* noremap[!] {lhs} {rhs} : same, but no remapping for {rhs}
* unmap[!] {lhs} : remove key mapping for {lhs}
* abbr : show all abbreviations
* abbr {lhs} : show abbreviations for {lhs}
* abbr {lhs} {rhs} : set abbreviation for {lhs} to {rhs}
* noreabbr {lhs} {rhs} : same, but no remapping for {rhs}
* unabbr {lhs} : remove abbreviation for {lhs}
*
* maptype == 1 for unmap command, 2 for noremap command.
*
* keys is pointer to any arguments. Note: keys cannot be a read-only string,
* it will be modified.
*
* for :map mode is NORMAL + VISUAL
* for :map! mode is INSERT + CMDLINE
* for :cmap mode is CMDLINE
* for :imap mode is INSERT
* for :nmap mode is NORMAL
* for :vmap mode is VISUAL
* for :abbr mode is INSERT + CMDLINE + ABBREV
* for :iabbr mode is INSERT + ABBREV
* for :cabbr mode is CMDLINE + ABBREV
*
* Return 0 for success
* 1 for invalid arguments
* 2 for no match
* 3 for ambiguety
* 4 for out of mem
*/
int
do_map(maptype, keys, mode)
int maptype;
char_u *keys;
int mode;
{
struct mapblock *mp, *mprev;
char_u *arg;
char_u *p;
int n;
int len = 0; /* init for GCC */
char_u *newstr;
int hasarg;
int haskey;
int did_it = FALSE;
int abbrev = 0;
int round;
char_u *keys_buf = NULL;
char_u *arg_buf = NULL;
int retval = 0;
int do_backslash;
if (mode & ABBREV) /* not a mapping but an abbreviation */
{
abbrev = ABBREV;
mode &= ~ABBREV;
}
/*
* find end of keys and skip CTRL-Vs (and backslashes) in it
* Accept backslash like CTRL-V when 'cpoptions' does not contain 'B'.
* with :unmap white space is included in the keys, no argument possible
*/
p = keys;
do_backslash = (vim_strchr(p_cpo, CPO_BSLASH) == NULL);
while (*p && (maptype == 1 || !vim_iswhite(*p)))
{
if ((p[0] == Ctrl('V') || (do_backslash && p[0] == '\\')) &&
p[1] != NUL)
++p; /* skip CTRL-V or backslash */
++p;
}
if (*p != NUL)
*p++ = NUL;
p = skipwhite(p);
arg = p;
hasarg = (*arg != NUL);
haskey = (*keys != NUL);
/* check for :unmap without argument */
if (maptype == 1 && !haskey)
{
retval = 1;
goto theend;
}
/*
* If mapping has been given as ^V<C_UP> say, then replace the term codes
* with the appropriate two bytes. If it is a shifted special key, unshift
* it too, giving another two bytes.
* replace_termcodes() may move the result to allocated memory, which
* needs to be freed later (*keys_buf and *arg_buf).
* replace_termcodes() also removes CTRL-Vs and sometimes backslashes.
*/
if (haskey)
keys = replace_termcodes(keys, &keys_buf, TRUE);
if (hasarg)
arg = replace_termcodes(arg, &arg_buf, FALSE);
/*
* check arguments and translate function keys
*/
if (haskey)
{
len = STRLEN(keys);
if (len > MAXMAPLEN) /* maximum length of MAXMAPLEN chars */
{
retval = 1;
goto theend;
}
if (abbrev)
{
/*
* If an abbreviation ends in a keyword character, the
* rest must be all keyword-char or all non-keyword-char.
* Otherwise we won't be able to find the start of it in a
* vi-compatible way.
* An abbrevation cannot contain white space.
*/
if (iswordchar(keys[len - 1])) /* ends in keyword char */
for (n = 0; n < len - 2; ++n)
if (iswordchar(keys[n]) != iswordchar(keys[len - 2]))
{
retval = 1;
goto theend;
}
for (n = 0; n < len; ++n)
if (vim_iswhite(keys[n]))
{
retval = 1;
goto theend;
}
}
}
if (haskey && hasarg && abbrev) /* if we will add an abbreviation */
no_abbr = FALSE; /* reset flag that indicates there are
no abbreviations */
if (!haskey || (maptype != 1 && !hasarg))
msg_start();
/*
* Find an entry in the maplist that matches.
* For :unmap we may loop two times: once to try to unmap an entry with a
* matching 'from' part, a second time, if the first fails, to unmap an
* entry with a matching 'to' part. This was done to allow ":ab foo bar" to be
* unmapped by typing ":unab foo", where "foo" will be replaced by "bar" because
* of the abbreviation.
*/
for (round = 0; (round == 0 || maptype == 1) && round <= 1 &&
!did_it && !got_int; ++round)
{
for (mp = maplist.m_next, mprev = &maplist; mp && !got_int;
mprev = mp, mp = mp->m_next)
{
/* skip entries with wrong mode */
if (!(mp->m_mode & mode) || (mp->m_mode & ABBREV) != abbrev)
continue;
if (!haskey) /* show all entries */
{
showmap(mp);
did_it = TRUE;
}
else /* do we have a match? */
{
if (round) /* second round: try 'to' string for unmap */
{
n = STRLEN(mp->m_str);
p = mp->m_str;
}
else
{
n = mp->m_keylen;
p = mp->m_keys;
}
if (!STRNCMP(p, keys, (size_t)(n < len ? n : len)))
{
if (maptype == 1) /* delete entry */
{
if (n != len) /* not a full match */
continue;
/*
* We reset the indicated mode bits. If nothing is
* left the entry is deleted below.
*/
mp->m_mode &= (~mode | ABBREV);
did_it = TRUE; /* remember that we did something */
}
else if (!hasarg) /* show matching entry */
{
showmap(mp);
did_it = TRUE;
}
else if (n != len) /* new entry is ambigious */
{
if (abbrev) /* for abbreviations that's ok */
continue;
retval = 3;
goto theend;
}
else
{
mp->m_mode &= (~mode | ABBREV); /* remove mode bits */
if (!(mp->m_mode & ~ABBREV) && !did_it) /* reuse existing entry */
{
newstr = strsave(arg);
if (newstr == NULL)
{
retval = 4; /* no mem */
goto theend;
}
vim_free(mp->m_str);
mp->m_str = newstr;
mp->m_noremap = maptype;
mp->m_mode = mode + abbrev;
did_it = TRUE;
}
}
if (!(mp->m_mode & ~ABBREV)) /* entry can be deleted */
{
map_free(mprev);
mp = mprev; /* continue with next entry */
}
}
}
}
}
if (maptype == 1) /* delete entry */
{
if (!did_it)
retval = 2; /* no match */
goto theend;
}
if (!haskey || !hasarg) /* print entries */
{
if (!did_it)
{
if (abbrev)
MSG("No abbreviation found");
else
MSG("No mapping found");
}
goto theend; /* listing finished */
}
if (did_it) /* have added the new entry already */
goto theend;
/*
* get here when we have to add a new entry
*/
/* allocate a new entry for the maplist */
mp = (struct mapblock *)alloc((unsigned)sizeof(struct mapblock));
if (mp == NULL)
{
retval = 4; /* no mem */
goto theend;
}
mp->m_keys = strsave(keys);
mp->m_str = strsave(arg);
if (mp->m_keys == NULL || mp->m_str == NULL)
{
vim_free(mp->m_keys);
vim_free(mp->m_str);
vim_free(mp);
retval = 4; /* no mem */
goto theend;
}
mp->m_keylen = STRLEN(mp->m_keys);
mp->m_noremap = maptype;
mp->m_mode = mode + abbrev;
/* add the new entry in front of the maplist */
mp->m_next = maplist.m_next;
maplist.m_next = mp;
theend:
vim_free(keys_buf);
vim_free(arg_buf);
return retval;
}
/*
* Delete one entry from the maplist.
* The argument is a pointer to the PREVIOUS entry!
*/
static void
map_free(mprev)
struct mapblock *mprev;
{
struct mapblock *mp;
mp = mprev->m_next;
vim_free(mp->m_keys);
vim_free(mp->m_str);
mprev->m_next = mp->m_next;
vim_free(mp);
}
/*
* Clear all mappings or abbreviations.
* 'abbr' should be FALSE for mappings, TRUE for abbreviations.
*/
void
map_clear(modec, forceit, abbr)
int modec;
int forceit;
int abbr;
{
struct mapblock *mp;
int mode;
if (forceit) /* :mapclear! */
mode = INSERT + CMDLINE;
else if (modec == 'i')
mode = INSERT;
else if (modec == 'n')
mode = NORMAL;
else if (modec == 'c')
mode = CMDLINE;
else if (modec == 'v')
mode = VISUAL;
else
mode = VISUAL + NORMAL;
for (mp = &maplist; mp->m_next != NULL; )
{
if (abbr != !(mp->m_next->m_mode & ABBREV) && mp->m_next->m_mode & mode)
{
mp->m_next->m_mode &= ~mode;
if ((mp->m_next->m_mode & ~ABBREV) == 0) /* entry can be deleted */
{
map_free(mp);
continue;
}
}
mp = mp->m_next;
}
}
static void
showmap(mp)
struct mapblock *mp;
{
int len;
if (msg_didout)
msg_outchar('\n');
if ((mp->m_mode & (INSERT + CMDLINE)) == INSERT + CMDLINE)
MSG_OUTSTR("! ");
else if (mp->m_mode & INSERT)
MSG_OUTSTR("i ");
else if (mp->m_mode & CMDLINE)
MSG_OUTSTR("c ");
else if (!(mp->m_mode & VISUAL))
MSG_OUTSTR("n ");
else if (!(mp->m_mode & NORMAL))
MSG_OUTSTR("v ");
else
MSG_OUTSTR(" ");
/* Get length of what we write */
len = msg_outtrans_special(mp->m_keys, TRUE);
do
{
msg_outchar(' '); /* padd with blanks */
++len;
} while (len < 12);
if (mp->m_noremap)
msg_outchar('*');
else
msg_outchar(' ');
/* Use FALSE below if we only want things like <Up> to show up as such on
* the rhs, and not M-x etc, TRUE gets both -- webb
*/
msg_outtrans_special(mp->m_str, TRUE);
flushbuf(); /* show one line at a time */
}
/*
* Check for an abbreviation.
* Cursor is at ptr[col]. When inserting, mincol is where insert started.
* "c" is the character typed before check_abbr was called.
*
* Historic vi practice: The last character of an abbreviation must be an id
* character ([a-zA-Z0-9_]). The characters in front of it must be all id
* characters or all non-id characters. This allows for abbr. "#i" to
* "#include".
*
* Vim addition: Allow for abbreviations that end in a non-keyword character.
* Then there must be white space before the abbr.
*
* return TRUE if there is an abbreviation, FALSE if not
*/
int
check_abbr(c, ptr, col, mincol)
int c;
char_u *ptr;
int col;
int mincol;
{
int len;
int j;
char_u tb[4];
struct mapblock *mp;
int is_id = TRUE;
int vim_abbr;
if (no_abbr_cnt) /* abbrev. are not recursive */
return FALSE;
/*
* Check for word before the cursor: If it ends in a keyword char all
* chars before it must be al keyword chars or non-keyword chars, but not
* white space. If it ends in a non-keyword char we accept any characters
* before it except white space.
*/
if (col == 0) /* cannot be an abbr. */
return FALSE;
if (!iswordchar(ptr[col - 1]))
vim_abbr = TRUE; /* Vim added abbr. */
else
{
vim_abbr = FALSE; /* vi compatible abbr. */
if (col > 1)
is_id = iswordchar(ptr[col - 2]);
}
for (len = col - 1; len > 0 && !vim_isspace(ptr[len - 1]) &&
(vim_abbr || is_id == iswordchar(ptr[len - 1])); --len)
;
if (len < mincol)
len = mincol;
if (len < col) /* there is a word in front of the cursor */
{
ptr += len;
len = col - len;
for (mp = maplist.m_next; mp; mp = mp->m_next)
{
/* find entries with right mode and keys */
if ((mp->m_mode & ABBREV) == ABBREV &&
(mp->m_mode & State) &&
mp->m_keylen == len &&
!STRNCMP(mp->m_keys, ptr, (size_t)len))
break;
}
if (mp)
{
/*
* Found a match:
* Insert the rest of the abbreviation in typebuf[].
* This goes from end to start.
*
* Characters 0x000 - 0x100: normal chars, may need CTRL-V,
* except K_SPECIAL: Becomes K_SPECIAL KS_SPECIAL K_FILLER
* Characters where IS_SPECIAL() == TRUE: key codes, need
* K_SPECIAL. Other characters (with ABBR_OFF): don't use CTRL-V.
*/
j = 0;
/* special key code, split up */
if (IS_SPECIAL(c) || c == K_SPECIAL)
{
tb[j++] = K_SPECIAL;
tb[j++] = K_SECOND(c);
c = K_THIRD(c);
}
else if (c < 0x100 && (c < ' ' || c > '~'))
tb[j++] = Ctrl('V'); /* special char needs CTRL-V */
tb[j++] = c;
tb[j] = NUL;
/* insert the last typed char */
(void)ins_typebuf(tb, TRUE, 0, TRUE);
/* insert the to string */
(void)ins_typebuf(mp->m_str, mp->m_noremap ? -1 : 0, 0, TRUE);
/* no abbrev. for these chars */
no_abbr_cnt += STRLEN(mp->m_str) + j + 1;
tb[0] = Ctrl('H');
tb[1] = NUL;
while (len--) /* delete the from string */
(void)ins_typebuf(tb, TRUE, 0, TRUE);
return TRUE;
}
}
return FALSE;
}
/*
* Write map commands for the current mappings to an .exrc file.
* Return FAIL on error, OK otherwise.
*/
int
makemap(fd)
FILE *fd;
{
struct mapblock *mp;
char_u c1;
char_u *p;
for (mp = maplist.m_next; mp; mp = mp->m_next)
{
c1 = NUL;
p = (char_u *)"map";
switch (mp->m_mode)
{
case NORMAL + VISUAL:
break;
case NORMAL:
c1 = 'n';
break;
case VISUAL:
c1 = 'v';
break;
case CMDLINE + INSERT:
p = (char_u *)"map!";
break;
case CMDLINE:
c1 = 'c';
break;
case INSERT:
c1 = 'i';
break;
case INSERT + CMDLINE + ABBREV:
p = (char_u *)"abbr";
break;
case CMDLINE + ABBREV:
c1 = 'c';
p = (char_u *)"abbr";
break;
case INSERT + ABBREV:
c1 = 'i';
p = (char_u *)"abbr";
break;
default:
EMSG("makemap: Illegal mode");
return FAIL;
}
if (c1 && putc(c1, fd) < 0)
return FAIL;
if (mp->m_noremap && fprintf(fd, "nore") < 0)
return FAIL;
if (fprintf(fd, (char *)p) < 0)
return FAIL;
if ( putc(' ', fd) < 0 || putescstr(fd, mp->m_keys, FALSE) == FAIL ||
putc(' ', fd) < 0 || putescstr(fd, mp->m_str, FALSE) == FAIL ||
#ifdef USE_CRNL
putc('\r', fd) < 0 ||
#endif
putc('\n', fd) < 0)
return FAIL;
}
return OK;
}
/*
* write escape string to file
*
* return FAIL for failure, OK otherwise
*/
int
putescstr(fd, str, set)
FILE *fd;
char_u *str;
int set; /* TRUE for makeset, FALSE for makemap */
{
int c;
int modifiers;
for ( ; *str; ++str)
{
c = *str;
/*
* Special key codes have to be translated to be able to make sense
* when they are read back.
*/
if (c == K_SPECIAL && !set)
{
modifiers = 0x0;
if (str[1] == KS_MODIFIER)
{
modifiers = str[2];
str += 3;
c = *str;
}
if (c == K_SPECIAL)
{
c = TO_SPECIAL(str[1], str[2]);
str += 2;
}
if (IS_SPECIAL(c) || modifiers) /* special key */
{
fprintf(fd, (char *)get_special_key_name(c, modifiers));
continue;
}
}
/*
* A '\n' in a map command should be written as <NL>.
* A '\n' in a set command should be written as \^V^J.
*/
if (c == NL)
{
if (set)
fprintf(fd, "\\\026\n");
else
fprintf(fd, "<NL>");
continue;
}
/*
* some characters have to be escaped with CTRL-V to
* prevent them from misinterpreted in DoOneCmd().
* A space, Tab and '"' has to be escaped with a backslash to
* prevent it to be misinterpreted in do_set().
*/
if (set && (vim_iswhite(c) || c == '"' || c == '\\'))
{
if (putc('\\', fd) < 0)
return FAIL;
}
else if (c < ' ' || c > '~' || c == '|')
{
if (putc(Ctrl('V'), fd) < 0)
return FAIL;
}
if (putc(c, fd) < 0)
return FAIL;
}
return OK;
}
/*
* Check all mappings for the presence of special key codes.
* Used after ":set term=xxx".
*/
void
check_map_keycodes()
{
struct mapblock *mp;
char_u *p;
int i;
char_u buf[3];
char_u *save_name;
save_name = sourcing_name;
sourcing_name = (char_u *)"mappings";/* don't give error messages */
for (mp = maplist.m_next; mp != NULL; mp = mp->m_next)
{
for (i = 0; i <= 1; ++i) /* do this twice */
{
if (i == 0)
p = mp->m_keys; /* once for the "from" part */
else
p = mp->m_str; /* and once for the "to" part */
while (*p)
{
if (*p == K_SPECIAL)
{
++p;
if (*p < 128) /* only for "normal" termcap entries */
{
buf[0] = p[0];
buf[1] = p[1];
buf[2] = NUL;
(void)add_termcap_entry(buf, FALSE);
}
++p;
}
++p;
}
}
}
sourcing_name = save_name;
}
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