File: [local] / src / usr.bin / vim / Attic / ops.c (download)
Revision 1.3, Mon Oct 14 03:55:22 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
Changes since 1.2: +4 -1 lines
Backout a previous change that didn't work, and update to version 4.5.
|
/* $OpenBSD: ops.c,v 1.3 1996/10/14 03:55:22 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.
*/
/*
* ops.c: implementation of various operators: do_shift, do_delete, do_tilde,
* do_change, do_yank, do_put, do_join
*/
#include "vim.h"
#include "globals.h"
#include "proto.h"
#include "option.h"
#include "ops.h"
/*
* Number of registers.
* 0 = unnamed register, for normal yanks and puts
* 1..9 = number registers, for deletes
* 10..35 = named registers
* 36 = delete register (-)
* 37 = GUI selection register (*). Only if USE_GUI defined
*/
#ifdef USE_GUI
# define NUM_REGISTERS 38
#else
# define NUM_REGISTERS 37
#endif
/*
* Symbolic names for some registers.
*/
#define DELETION_REGISTER 36
#ifdef USE_GUI
# define GUI_SELECTION_REGISTER 37
#endif
/*
* Each yank buffer is an array of pointers to lines.
*/
static struct yankbuf
{
char_u **y_array; /* pointer to array of line pointers */
linenr_t y_size; /* number of lines in y_array */
char_u y_type; /* MLINE, MCHAR or MBLOCK */
} y_buf[NUM_REGISTERS];
static struct yankbuf *y_current; /* ptr to current yank buffer */
static int yankappend; /* TRUE when appending */
static struct yankbuf *y_previous = NULL; /* ptr to last written yank buffr */
/*
* structure used by block_prep, do_delete and do_yank for blockwise operators
*/
struct block_def
{
int startspaces;
int endspaces;
int textlen;
char_u *textstart;
colnr_t textcol;
};
static void get_yank_buffer __ARGS((int));
static int stuff_yank __ARGS((int, char_u *));
static void free_yank __ARGS((long));
static void free_yank_all __ARGS((void));
static void block_prep __ARGS((struct block_def *, linenr_t, int));
static int same_leader __ARGS((int, char_u *, int, char_u *));
static int fmt_end_block __ARGS((linenr_t, int *, char_u **));
/*
* do_shift - handle a shift operation
*/
void
do_shift(op, curs_top, amount)
int op;
int curs_top;
int amount;
{
register long i;
int first_char;
if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
(linenr_t)(curwin->w_cursor.lnum + op_line_count)) == FAIL)
return;
for (i = op_line_count; --i >= 0; )
{
first_char = *ml_get_curline();
if (first_char == NUL) /* empty line */
curwin->w_cursor.col = 0;
/*
* Don't move the line right if it starts with # and p_si is set.
*/
else
#if defined(SMARTINDENT) || defined(CINDENT)
if (first_char != '#' || (
# ifdef SMARTINDENT
!curbuf->b_p_si
# endif
# if defined(SMARTINDENT) && defined(CINDENT)
&&
# endif
# ifdef CINDENT
(!curbuf->b_p_cin || !in_cinkeys('#', ' ', TRUE))
# endif
))
#endif
{
/* if (op_block_mode)
shift the block, not the whole line
else */
shift_line(op == LSHIFT, p_sr, amount);
}
++curwin->w_cursor.lnum;
}
if (curs_top) /* put cursor on first line, for ">>" */
{
curwin->w_cursor.lnum -= op_line_count;
beginline(MAYBE); /* shift_line() may have changed cursor.col */
}
else
--curwin->w_cursor.lnum; /* put cursor on last line, for ":>" */
updateScreen(CURSUPD);
if (op_line_count > p_report)
smsg((char_u *)"%ld line%s %ced %d time%s", op_line_count,
plural(op_line_count), (op == RSHIFT) ? '>' : '<',
amount, plural((long)amount));
}
/*
* shift the current line one shiftwidth left (if left != 0) or right
* leaves cursor on first blank in the line
*/
void
shift_line(left, round, amount)
int left;
int round;
int amount;
{
register int count;
register int i, j;
int p_sw = (int)curbuf->b_p_sw;
count = get_indent(); /* get current indent */
if (round) /* round off indent */
{
i = count / p_sw; /* number of p_sw rounded down */
j = count % p_sw; /* extra spaces */
if (j && left) /* first remove extra spaces */
--amount;
if (left)
{
i -= amount;
if (i < 0)
i = 0;
}
else
i += amount;
count = i * p_sw;
}
else /* original vi indent */
{
if (left)
{
count -= p_sw * amount;
if (count < 0)
count = 0;
}
else
count += p_sw * amount;
}
set_indent(count, TRUE); /* set new indent */
}
#if defined(LISPINDENT) || defined(CINDENT)
/*
* do_reindent - handle reindenting a block of lines for C or lisp.
*
* mechanism copied from do_shift, above
*/
void
do_reindent(how)
int (*how) __ARGS((void));
{
register long i;
char_u *l;
int count;
if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
(linenr_t)(curwin->w_cursor.lnum + op_line_count)) == FAIL)
return;
for (i = op_line_count; --i >= 0 && !got_int; )
{
/* it's a slow thing to do, so give feedback so there's no worry that
* the computer's just hung. */
if ((i % 50 == 0 || i == op_line_count - 1) && op_line_count > p_report)
smsg((char_u *)"%ld line%s to indent... ", i, plural(i));
/*
* Be vi-compatible: For lisp indenting the first line is not
* indented, unless there is only one line.
*/
#ifdef LISPINDENT
if (i != op_line_count - 1 || op_line_count == 1 ||
how != get_lisp_indent)
#endif
{
l = skipwhite(ml_get_curline());
if (*l == NUL) /* empty or blank line */
count = 0;
else
count = how(); /* get the indent for this line */
set_indent(count, TRUE);
}
++curwin->w_cursor.lnum;
}
/* put cursor on first non-blank of indented line */
curwin->w_cursor.lnum -= op_line_count;
beginline(MAYBE);
updateScreen(CURSUPD);
if (op_line_count > p_report)
{
i = op_line_count - (i + 1);
smsg((char_u *)"%ld line%s indented ", i, plural(i));
}
}
#endif /* defined(LISPINDENT) || defined(CINDENT) */
/*
* check if character is name of yank buffer
* Note: There is no check for 0 (default register), caller should do this
*/
int
is_yank_buffer(c, writing)
int c;
int writing; /* if TRUE check for writable buffers */
{
if (c > '~')
return FALSE;
if (isalnum(c) || (!writing && vim_strchr((char_u *)".%:", c) != NULL) ||
c == '"' || c == '-'
#ifdef USE_GUI
|| (gui.in_use && c == '*')
#endif
)
return TRUE;
return FALSE;
}
/*
* Set y_current and yankappend, according to the value of yankbuffer.
*
* If yankbuffer is 0 and writing, use buffer 0
* If yankbuffer is 0 and reading, use previous buffer
*/
static void
get_yank_buffer(writing)
int writing;
{
register int i;
yankappend = FALSE;
if (((yankbuffer == 0 && !writing) || yankbuffer == '"') &&
y_previous != NULL)
{
y_current = y_previous;
return;
}
i = yankbuffer;
if (isdigit(i))
i -= '0';
else if (islower(i))
i -= 'a' - 10;
else if (isupper(i))
{
i -= 'A' - 10;
yankappend = TRUE;
}
else if (yankbuffer == '-')
i = DELETION_REGISTER;
#ifdef USE_GUI
else if (gui.in_use && yankbuffer == '*')
i = GUI_SELECTION_REGISTER;
#endif
else /* not 0-9, a-z, A-Z or '-': use buffer 0 */
i = 0;
y_current = &(y_buf[i]);
if (writing) /* remember the buffer we write into for do_put() */
y_previous = y_current;
}
/*
* return TRUE if the current yank buffer has type MLINE
*/
int
yank_buffer_mline()
{
if (yankbuffer != 0 && !is_yank_buffer(yankbuffer, FALSE))
return FALSE;
get_yank_buffer(FALSE);
return (y_current->y_type == MLINE);
}
/*
* start or stop recording into a yank buffer
*
* return FAIL for failure, OK otherwise
*/
int
do_record(c)
int c;
{
char_u *p;
static int bufname;
int retval;
if (Recording == FALSE) /* start recording */
{
/* registers 0-9, a-z and " are allowed */
if (c > '~' || (!isalnum(c) && c != '"'))
retval = FAIL;
else
{
Recording = TRUE;
showmode();
bufname = c;
retval = OK;
}
}
else /* stop recording */
{
Recording = FALSE;
MSG("");
p = get_recorded();
if (p == NULL)
retval = FAIL;
else
retval = (stuff_yank(bufname, p));
}
return retval;
}
/*
* stuff string 'p' into yank buffer 'bufname' (append if uppercase)
* 'p' is assumed to be alloced.
*
* return FAIL for failure, OK otherwise
*/
static int
stuff_yank(bufname, p)
int bufname;
char_u *p;
{
char_u *lp;
char_u **pp;
yankbuffer = bufname;
/* check for read-only buffer */
if (yankbuffer != 0 && !is_yank_buffer(yankbuffer, TRUE))
return FAIL;
get_yank_buffer(TRUE);
if (yankappend && y_current->y_array != NULL)
{
pp = &(y_current->y_array[y_current->y_size - 1]);
lp = lalloc((long_u)(STRLEN(*pp) + STRLEN(p) + 1), TRUE);
if (lp == NULL)
{
vim_free(p);
return FAIL;
}
STRCPY(lp, *pp);
STRCAT(lp, p);
vim_free(p);
vim_free(*pp);
*pp = lp;
}
else
{
free_yank_all();
if ((y_current->y_array =
(char_u **)alloc((unsigned)sizeof(char_u *))) == NULL)
{
vim_free(p);
return FAIL;
}
y_current->y_array[0] = p;
y_current->y_size = 1;
y_current->y_type = MCHAR; /* used to be MLINE, why? */
}
return OK;
}
/*
* execute a yank buffer (register): copy it into the stuff buffer
*
* return FAIL for failure, OK otherwise
*/
int
do_execbuf(c, colon, addcr)
int c;
int colon; /* insert ':' before each line */
int addcr; /* always add '\n' to end of line */
{
static int lastc = NUL;
long i;
char_u *p;
int truncated;
int retval;
if (c == '@') /* repeat previous one */
c = lastc;
if (c == '%' || !is_yank_buffer(c, FALSE)) /* check for valid buffer */
return FAIL;
lastc = c;
if (c == ':') /* use last command line */
{
if (last_cmdline == NULL)
{
EMSG(e_nolastcmd);
return FAIL;
}
vim_free(new_last_cmdline); /* don't keep the cmdline containing @: */
new_last_cmdline = NULL;
if (ins_typebuf((char_u *)"\n", FALSE, 0, TRUE) == FAIL)
return FAIL;
if (ins_typebuf(last_cmdline, FALSE, 0, TRUE) == FAIL)
return FAIL;
if (ins_typebuf((char_u *)":", FALSE, 0, TRUE) == FAIL)
return FAIL;
}
else if (c == '.') /* use last inserted text */
{
p = get_last_insert();
if (p == NULL)
{
EMSG(e_noinstext);
return FAIL;
}
i = STRLEN(p);
if (i > 0 && p[i - 1] == ESC) /* remove trailing ESC */
{
p[i - 1] = NUL;
truncated = TRUE;
}
else
truncated = FALSE;
retval = ins_typebuf(p, FALSE, 0, TRUE);
if (truncated)
p[i - 1] = ESC;
return retval;
}
else
{
yankbuffer = c;
get_yank_buffer(FALSE);
if (y_current->y_array == NULL)
return FAIL;
/*
* Insert lines into typeahead buffer, from last one to first one.
*/
for (i = y_current->y_size; --i >= 0; )
{
/* insert newline between lines and after last line if type is MLINE */
if (y_current->y_type == MLINE || i < y_current->y_size - 1
|| addcr)
{
if (ins_typebuf((char_u *)"\n", FALSE, 0, TRUE) == FAIL)
return FAIL;
}
if (ins_typebuf(y_current->y_array[i], FALSE, 0, TRUE) == FAIL)
return FAIL;
if (colon && ins_typebuf((char_u *)":", FALSE, 0, TRUE) == FAIL)
return FAIL;
}
Exec_reg = TRUE; /* disable the 'q' command */
}
return OK;
}
/*
* Insert a yank buffer: copy it into the Read buffer.
* Used by CTRL-R command and middle mouse button in insert mode.
*
* return FAIL for failure, OK otherwise
*/
int
insertbuf(c)
int c;
{
long i;
int retval = OK;
/*
* It is possible to get into an endless loop by having CTRL-R a in
* register a and then, in insert mode, doing CTRL-R a.
* If you hit CTRL-C, the loop will be broken here.
*/
mch_breakcheck();
if (got_int)
return FAIL;
/* check for valid buffer */
if (c != NUL && !is_yank_buffer(c, FALSE))
return FAIL;
#ifdef USE_GUI
if (c == '*')
gui_get_selection(); /* may fill * register */
#endif
if (c == '.') /* insert last inserted text */
retval = stuff_inserted(NUL, 1L, TRUE);
else if (c == '%') /* insert file name */
{
if (check_fname() == FAIL)
return FAIL;
stuffReadbuff(curbuf->b_xfilename);
}
else if (c == ':') /* insert last command line */
{
if (last_cmdline == NULL)
{
EMSG(e_nolastcmd);
return FAIL;
}
stuffReadbuff(last_cmdline);
}
else /* name or number register */
{
yankbuffer = c;
get_yank_buffer(FALSE);
if (y_current->y_array == NULL)
retval = FAIL;
else
{
for (i = 0; i < y_current->y_size; ++i)
{
stuffReadbuff(y_current->y_array[i]);
/* insert newline between lines and after last line if type is
* MLINE */
if (y_current->y_type == MLINE || i < y_current->y_size - 1)
stuffReadbuff((char_u *)"\n");
}
}
}
return retval;
}
/*
* paste a yank buffer into the command line.
* used by CTRL-R command in command-line mode
* insertbuf() can't be used here, because special characters from the
* register contents will be interpreted as commands.
*
* return FAIL for failure, OK otherwise
*/
int
cmdline_paste(c)
int c;
{
long i;
if (!is_yank_buffer(c, FALSE)) /* check for valid buffer */
return FAIL;
#ifdef USE_GUI
if (c == '*')
gui_get_selection();
#endif
if (c == '.') /* insert last inserted text */
return FAIL; /* Unimplemented */
if (c == '%') /* insert file name */
{
if (check_fname() == FAIL)
return FAIL;
return put_on_cmdline(curbuf->b_xfilename, -1, TRUE);
}
if (c == ':') /* insert last command line */
{
if (last_cmdline == NULL)
return FAIL;
return put_on_cmdline(last_cmdline, -1, TRUE);
}
yankbuffer = c;
get_yank_buffer(FALSE);
if (y_current->y_array == NULL)
return FAIL;
for (i = 0; i < y_current->y_size; ++i)
{
put_on_cmdline(y_current->y_array[i], -1, FALSE);
/* insert ^M between lines and after last line if type is MLINE */
if (y_current->y_type == MLINE || i < y_current->y_size - 1)
put_on_cmdline((char_u *)"\r", 1, FALSE);
}
return OK;
}
/*
* do_delete - handle a delete operation
*/
void
do_delete()
{
register int n;
linenr_t lnum;
char_u *ptr;
char_u *newp, *oldp;
linenr_t old_lcount = curbuf->b_ml.ml_line_count;
int did_yank = FALSE;
struct block_def bd;
if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to do */
return;
/*
* Imitate the strange Vi behaviour: If the delete spans more than one line
* and op_motion_type == MCHAR and the result is a blank line, make the delete
* linewise. Don't do this for the change command.
*/
if (op_motion_type == MCHAR && op_line_count > 1 && op_type == DELETE)
{
ptr = ml_get(curbuf->b_op_end.lnum) + curbuf->b_op_end.col +
op_inclusive;
ptr = skipwhite(ptr);
if (*ptr == NUL && inindent(0))
op_motion_type = MLINE;
}
/*
* Check for trying to delete (e.g. "D") in an empty line.
* Note: For change command it is ok.
*/
if (op_motion_type == MCHAR && op_line_count == 1 &&
op_type == DELETE && *ml_get(curbuf->b_op_start.lnum) == NUL)
{
beep_flush();
return;
}
/*
* Do a yank of whatever we're about to delete.
* If a yank buffer was specified, put the deleted text into that buffer
*/
if (yankbuffer != 0)
{
/* check for read-only buffer */
if (!is_yank_buffer(yankbuffer, TRUE))
{
beep_flush();
return;
}
get_yank_buffer(TRUE); /* yank into specified buffer */
if (do_yank(TRUE, FALSE) == OK) /* yank without message */
did_yank = TRUE;
}
/*
* Put deleted text into register 1 and shift number buffers if
* the delete contains a line break, or when a yankbuffer has been specified!
*/
if (yankbuffer != 0 || op_motion_type == MLINE || op_line_count > 1)
{
y_current = &y_buf[9];
free_yank_all(); /* free buffer nine */
for (n = 9; n > 1; --n)
y_buf[n] = y_buf[n - 1];
y_previous = y_current = &y_buf[1];
y_buf[1].y_array = NULL; /* set buffer one to empty */
yankbuffer = 0;
}
else if (yankbuffer == 0) /* yank into unnamed buffer */
{
yankbuffer = '-'; /* use special delete buffer */
get_yank_buffer(TRUE);
yankbuffer = 0;
}
if (yankbuffer == 0 && do_yank(TRUE, FALSE) == OK)
did_yank = TRUE;
/*
* If there's too much stuff to fit in the yank buffer, then get a
* confirmation before doing the delete. This is crude, but simple. And it
* avoids doing a delete of something we can't put back if we want.
*/
if (!did_yank)
{
if (ask_yesno((char_u *)"cannot yank; delete anyway", TRUE) != 'y')
{
emsg(e_abort);
return;
}
}
/*
* block mode delete
*/
if (op_block_mode)
{
if (u_save((linenr_t)(curbuf->b_op_start.lnum - 1),
(linenr_t)(curbuf->b_op_end.lnum + 1)) == FAIL)
return;
for (lnum = curwin->w_cursor.lnum;
curwin->w_cursor.lnum <= curbuf->b_op_end.lnum;
++curwin->w_cursor.lnum)
{
block_prep(&bd, curwin->w_cursor.lnum, TRUE);
if (bd.textlen == 0) /* nothing to delete */
continue;
/*
* If we delete a TAB, it may be replaced by several characters.
* Thus the number of characters may increase!
*/
n = bd.textlen - bd.startspaces - bd.endspaces; /* number of chars deleted */
oldp = ml_get_curline();
newp = alloc_check((unsigned)STRLEN(oldp) + 1 - n);
if (newp == NULL)
continue;
/* copy up to deleted part */
vim_memmove(newp, oldp, (size_t)bd.textcol);
/* insert spaces */
copy_spaces(newp + bd.textcol, (size_t)(bd.startspaces + bd.endspaces));
/* copy the part after the deleted part */
oldp += bd.textcol + bd.textlen;
vim_memmove(newp + bd.textcol + bd.startspaces + bd.endspaces,
oldp, STRLEN(oldp) + 1);
/* replace the line */
ml_replace(curwin->w_cursor.lnum, newp, FALSE);
}
curwin->w_cursor.lnum = lnum;
adjust_cursor();
CHANGED;
updateScreen(VALID_TO_CURSCHAR);
op_line_count = 0; /* no lines deleted */
}
else if (op_motion_type == MLINE)
{
if (op_type == CHANGE)
{
/* Delete the lines except the first one.
* Temporarily move the cursor to the next line.
* Save the current line number, if the last line is deleted
* it may be changed.
*/
if (op_line_count > 1)
{
lnum = curwin->w_cursor.lnum;
++curwin->w_cursor.lnum;
dellines((long)(op_line_count - 1), TRUE, TRUE);
curwin->w_cursor.lnum = lnum;
}
if (u_save_cursor() == FAIL)
return;
if (curbuf->b_p_ai) /* don't delete indent */
{
beginline(TRUE); /* put cursor on first non-white */
did_ai = TRUE; /* delete the indent when ESC hit */
}
truncate_line(FALSE);
if (curwin->w_cursor.col > 0)
--curwin->w_cursor.col; /* put cursor on last char in line */
}
else
{
dellines(op_line_count, TRUE, TRUE);
}
u_clearline(); /* "U" command should not be possible after "dd" */
beginline(TRUE);
}
else if (op_line_count == 1) /* delete characters within one line */
{
if (u_save_cursor() == FAIL)
return;
/* if 'cpoptions' contains '$', display '$' at end of change */
if (vim_strchr(p_cpo, CPO_DOLLAR) != NULL && op_type == CHANGE &&
curbuf->b_op_end.lnum == curwin->w_cursor.lnum && !op_is_VIsual)
display_dollar(curbuf->b_op_end.col - !op_inclusive);
n = curbuf->b_op_end.col - curbuf->b_op_start.col + 1 - !op_inclusive;
while (n-- > 0)
if (delchar(TRUE) == FAIL)
break;
}
else /* delete characters between lines */
{
if (u_save_cursor() == FAIL) /* save first line for undo */
return;
truncate_line(TRUE); /* delete from cursor to end of line */
curbuf->b_op_start = curwin->w_cursor; /* remember curwin->w_cursor */
++curwin->w_cursor.lnum;
/* includes save for undo */
dellines((long)(op_line_count - 2), TRUE, TRUE);
if (u_save_cursor() == FAIL) /* save last line for undo */
return;
n = curbuf->b_op_end.col - !op_inclusive;
curwin->w_cursor.col = 0;
while (n-- >= 0) /* delete from start of line until op_end */
if (delchar(TRUE) == FAIL)
break;
curwin->w_cursor = curbuf->b_op_start; /* restore curwin->w_cursor */
(void)do_join(FALSE, curs_rows() == OK);
}
if ((op_motion_type == MCHAR && op_line_count == 1) || op_type == CHANGE)
{
if (dollar_vcol)
must_redraw = 0; /* don't want a redraw now */
cursupdate();
if (!dollar_vcol)
updateline();
}
else if (!global_busy) /* no need to update screen for :global */
updateScreen(CURSUPD);
msgmore(curbuf->b_ml.ml_line_count - old_lcount);
/* correct op_end for deleted text (for "']" command) */
if (op_block_mode)
curbuf->b_op_end.col = curbuf->b_op_start.col;
else
curbuf->b_op_end = curbuf->b_op_start;
}
/*
* do_tilde - handle the (non-standard vi) tilde operator
*/
void
do_tilde()
{
FPOS pos;
struct block_def bd;
if (u_save((linenr_t)(curbuf->b_op_start.lnum - 1),
(linenr_t)(curbuf->b_op_end.lnum + 1)) == FAIL)
return;
pos = curbuf->b_op_start;
if (op_block_mode) /* Visual block mode */
{
for (; pos.lnum <= curbuf->b_op_end.lnum; ++pos.lnum)
{
block_prep(&bd, pos.lnum, FALSE);
pos.col = bd.textcol;
while (--bd.textlen >= 0)
{
swapchar(&pos);
if (inc(&pos) == -1) /* at end of file */
break;
}
}
}
else /* not block mode */
{
if (op_motion_type == MLINE)
{
pos.col = 0;
curbuf->b_op_end.col = STRLEN(ml_get(curbuf->b_op_end.lnum));
if (curbuf->b_op_end.col)
--curbuf->b_op_end.col;
}
else if (!op_inclusive)
dec(&(curbuf->b_op_end));
while (ltoreq(pos, curbuf->b_op_end))
{
swapchar(&pos);
if (inc(&pos) == -1) /* at end of file */
break;
}
}
if (op_motion_type == MCHAR && op_line_count == 1 && !op_block_mode)
{
cursupdate();
updateline();
}
else
updateScreen(CURSUPD);
if (op_line_count > p_report)
smsg((char_u *)"%ld line%s ~ed",
op_line_count, plural(op_line_count));
}
/*
* If op_type == UPPER: make uppercase,
* if op_type == LOWER: make lowercase,
* else swap case of character at 'pos'
*/
void
swapchar(pos)
FPOS *pos;
{
int c;
c = gchar(pos);
if (islower(c) && op_type != LOWER)
{
pchar(*pos, toupper(c));
CHANGED;
}
else if (isupper(c) && op_type != UPPER)
{
pchar(*pos, tolower(c));
CHANGED;
}
}
/*
* do_change - handle a change operation
*
* return TRUE if edit() returns because of a CTRL-O command
*/
int
do_change()
{
register colnr_t l;
l = curbuf->b_op_start.col;
if (op_motion_type == MLINE)
{
l = 0;
can_si = TRUE; /* It's like opening a new line, do si */
}
if (!op_empty)
do_delete(); /* delete the text and take care of undo */
if ((l > curwin->w_cursor.col) && !lineempty(curwin->w_cursor.lnum))
inc_cursor();
#ifdef LISPINDENT
if (op_motion_type == MLINE)
{
if (curbuf->b_p_lisp && curbuf->b_p_ai)
fixthisline(get_lisp_indent);
# ifdef CINDENT
else if (curbuf->b_p_cin)
fixthisline(get_c_indent);
# endif
}
#endif
op_type = NOP; /* don't want op_type == CHANGED in Insert mode */
return edit(NUL, FALSE, (linenr_t)1);
}
/*
* set all the yank buffers to empty (called from main())
*/
void
init_yank()
{
register int i;
for (i = 0; i < NUM_REGISTERS; ++i)
y_buf[i].y_array = NULL;
}
/*
* Free "n" lines from the current yank buffer.
* Called for normal freeing and in case of error.
*/
static void
free_yank(n)
long n;
{
if (y_current->y_array != NULL)
{
register long i;
for (i = n; --i >= 0; )
{
if ((i & 1023) == 1023) /* this may take a while */
{
/*
* This message should never cause a hit-return message.
* Overwrite this message with any next message.
*/
++no_wait_return;
smsg((char_u *)"freeing %ld lines", i + 1);
--no_wait_return;
msg_didout = FALSE;
msg_col = 0;
}
vim_free(y_current->y_array[i]);
}
vim_free(y_current->y_array);
y_current->y_array = NULL;
if (n >= 1000)
MSG("");
}
}
static void
free_yank_all()
{
free_yank(y_current->y_size);
}
/*
* Yank the text between curwin->w_cursor and startpos into a yank buffer.
* If we are to append ("uppercase), we first yank into a new yank buffer and
* then concatenate the old and the new one (so we keep the old one in case
* of out-of-memory).
*
* return FAIL for failure, OK otherwise
*/
int
do_yank(deleting, mess)
int deleting;
int mess;
{
long i; /* index in y_array[] */
struct yankbuf *curr; /* copy of y_current */
struct yankbuf newbuf; /* new yank buffer when appending */
char_u **new_ptr;
register linenr_t lnum; /* current line number */
long j;
int yanktype = op_motion_type;
long yanklines = op_line_count;
linenr_t yankendlnum = curbuf->b_op_end.lnum;
char_u *pnew;
struct block_def bd;
/* check for read-only buffer */
if (yankbuffer != 0 && !is_yank_buffer(yankbuffer, TRUE))
{
beep_flush();
return FAIL;
}
if (!deleting) /* do_delete() already set y_current */
get_yank_buffer(TRUE);
curr = y_current;
/* append to existing contents */
if (yankappend && y_current->y_array != NULL)
y_current = &newbuf;
else
free_yank_all(); /* free previously yanked lines */
/*
* If the cursor was in column 1 before and after the movement, and the
* operator is not inclusive, the yank is always linewise.
*/
if (op_motion_type == MCHAR && curbuf->b_op_start.col == 0 &&
!op_inclusive && curbuf->b_op_end.col == 0 && yanklines > 1)
{
yanktype = MLINE;
--yankendlnum;
--yanklines;
}
y_current->y_size = yanklines;
y_current->y_type = yanktype; /* set the yank buffer type */
y_current->y_array = (char_u **)lalloc((long_u)(sizeof(char_u *) *
yanklines), TRUE);
if (y_current->y_array == NULL)
{
y_current = curr;
return FAIL;
}
i = 0;
lnum = curbuf->b_op_start.lnum;
/*
* Visual block mode
*/
if (op_block_mode)
{
y_current->y_type = MBLOCK; /* set the yank buffer type */
for ( ; lnum <= yankendlnum; ++lnum)
{
block_prep(&bd, lnum, FALSE);
if ((pnew = alloc(bd.startspaces + bd.endspaces +
bd.textlen + 1)) == NULL)
goto fail;
y_current->y_array[i++] = pnew;
copy_spaces(pnew, (size_t)bd.startspaces);
pnew += bd.startspaces;
vim_memmove(pnew, bd.textstart, (size_t)bd.textlen);
pnew += bd.textlen;
copy_spaces(pnew, (size_t)bd.endspaces);
pnew += bd.endspaces;
*pnew = NUL;
}
}
else
{
/*
* there are three parts for non-block mode:
* 1. if yanktype != MLINE yank last part of the top line
* 2. yank the lines between op_start and op_end, inclusive when
* yanktype == MLINE
* 3. if yanktype != MLINE yank first part of the bot line
*/
if (yanktype != MLINE)
{
if (yanklines == 1) /* op_start and op_end on same line */
{
j = curbuf->b_op_end.col - curbuf->b_op_start.col +
1 - !op_inclusive;
if ((y_current->y_array[0] = strnsave(ml_get(lnum) +
curbuf->b_op_start.col, (int)j)) == NULL)
{
fail:
free_yank(i); /* free the allocated lines */
y_current = curr;
return FAIL;
}
goto success;
}
if ((y_current->y_array[0] = strsave(ml_get(lnum++) +
curbuf->b_op_start.col)) == NULL)
goto fail;
++i;
}
while (yanktype == MLINE ? (lnum <= yankendlnum) : (lnum < yankendlnum))
{
if ((y_current->y_array[i] = strsave(ml_get(lnum++))) == NULL)
goto fail;
++i;
}
if (yanktype != MLINE)
{
if ((y_current->y_array[i] = strnsave(ml_get(yankendlnum),
curbuf->b_op_end.col + 1 - !op_inclusive)) == NULL)
goto fail;
}
}
success:
if (curr != y_current) /* append the new block to the old block */
{
new_ptr = (char_u **)lalloc((long_u)(sizeof(char_u *) *
(curr->y_size + y_current->y_size)), TRUE);
if (new_ptr == NULL)
goto fail;
for (j = 0; j < curr->y_size; ++j)
new_ptr[j] = curr->y_array[j];
vim_free(curr->y_array);
curr->y_array = new_ptr;
if (yanktype == MLINE) /* MLINE overrides MCHAR and MBLOCK */
curr->y_type = MLINE;
/* concatenate the last line of the old block with the first line of
* the new block */
if (curr->y_type == MCHAR)
{
pnew = lalloc((long_u)(STRLEN(curr->y_array[curr->y_size - 1])
+ STRLEN(y_current->y_array[0]) + 1), TRUE);
if (pnew == NULL)
{
i = y_current->y_size - 1;
goto fail;
}
STRCPY(pnew, curr->y_array[--j]);
STRCAT(pnew, y_current->y_array[0]);
vim_free(curr->y_array[j]);
vim_free(y_current->y_array[0]);
curr->y_array[j++] = pnew;
i = 1;
}
else
i = 0;
while (i < y_current->y_size)
curr->y_array[j++] = y_current->y_array[i++];
curr->y_size = j;
vim_free(y_current->y_array);
y_current = curr;
}
if (mess) /* Display message about yank? */
{
if (yanktype == MCHAR && !op_block_mode)
--yanklines;
if (yanklines > p_report)
{
cursupdate(); /* redisplay now, so message is not deleted */
smsg((char_u *)"%ld line%s yanked", yanklines, plural(yanklines));
}
}
return OK;
}
/*
* put contents of register into the text
* For ":put" command count == -1.
*/
void
do_put(dir, count, fix_indent)
int dir; /* BACKWARD for 'P', FORWARD for 'p' */
long count;
int fix_indent; /* make indent look nice */
{
char_u *ptr;
char_u *newp, *oldp;
int yanklen;
int oldlen;
int totlen = 0; /* init for gcc */
linenr_t lnum;
colnr_t col;
long i; /* index in y_array[] */
int y_type;
long y_size;
char_u **y_array;
long nr_lines = 0;
colnr_t vcol;
int delcount;
int incr = 0;
long j;
FPOS new_cursor;
int indent;
int orig_indent = 0; /* init for gcc */
int indent_diff = 0; /* init for gcc */
int first_indent = TRUE;
FPOS old_pos;
struct block_def bd;
char_u *insert_string = NULL;
#ifdef USE_GUI
if (yankbuffer == '*')
gui_get_selection();
#endif
if (fix_indent)
orig_indent = get_indent();
curbuf->b_op_start = curwin->w_cursor; /* default for "'[" command */
if (dir == FORWARD)
curbuf->b_op_start.col++;
curbuf->b_op_end = curwin->w_cursor; /* default for "']" command */
/*
* Using inserted text works differently, because the buffer includes
* special characters (newlines, etc.).
*/
if (yankbuffer == '.')
{
(void)stuff_inserted((dir == FORWARD ? (count == -1 ? 'o' : 'a') :
(count == -1 ? 'O' : 'i')), count, FALSE);
return;
}
/*
* For '%' (file name) and ':' (last command line) we have to create a
* fake yank buffer.
*/
if (yankbuffer == '%') /* use file name */
{
if (check_fname() == FAIL)
return;
insert_string = curbuf->b_xfilename;
}
else if (yankbuffer == ':') /* use last command line */
{
if (last_cmdline == NULL)
{
EMSG(e_nolastcmd);
return;
}
insert_string = last_cmdline;
}
if (insert_string != NULL)
{
y_type = MCHAR; /* use fake one-line yank buffer */
y_size = 1;
y_array = &insert_string;
}
else
{
get_yank_buffer(FALSE);
y_type = y_current->y_type;
y_size = y_current->y_size;
y_array = y_current->y_array;
}
if (count == -1) /* :put command */
{
y_type = MLINE;
count = 1;
}
if (y_size == 0 || y_array == NULL)
{
EMSG2("Nothing in register %s",
yankbuffer == 0 ? (char_u *)"\"" : transchar(yankbuffer));
return;
}
if (y_type == MBLOCK)
{
lnum = curwin->w_cursor.lnum + y_size + 1;
if (lnum > curbuf->b_ml.ml_line_count)
lnum = curbuf->b_ml.ml_line_count + 1;
if (u_save(curwin->w_cursor.lnum - 1, lnum) == FAIL)
return;
}
else if (u_save_cursor() == FAIL)
return;
yanklen = STRLEN(y_array[0]);
CHANGED;
lnum = curwin->w_cursor.lnum;
col = curwin->w_cursor.col;
/*
* block mode
*/
if (y_type == MBLOCK)
{
if (dir == FORWARD && gchar_cursor() != NUL)
{
getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
++col;
++curwin->w_cursor.col;
}
else
getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
for (i = 0; i < y_size; ++i)
{
bd.startspaces = 0;
bd.endspaces = 0;
bd.textcol = 0;
vcol = 0;
delcount = 0;
/* add a new line */
if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
{
ml_append(curbuf->b_ml.ml_line_count, (char_u *)"",
(colnr_t)1, FALSE);
++nr_lines;
}
oldp = ml_get_curline();
oldlen = STRLEN(oldp);
for (ptr = oldp; vcol < col && *ptr; ++ptr)
{
/* Count a tab for what it's worth (if list mode not on) */
incr = lbr_chartabsize(ptr, (colnr_t)vcol);
vcol += incr;
++bd.textcol;
}
if (vcol < col) /* line too short, padd with spaces */
{
bd.startspaces = col - vcol;
}
else if (vcol > col)
{
bd.endspaces = vcol - col;
bd.startspaces = incr - bd.endspaces;
--bd.textcol;
delcount = 1;
}
yanklen = STRLEN(y_array[i]);
totlen = count * yanklen + bd.startspaces + bd.endspaces;
newp = alloc_check((unsigned)totlen + oldlen + 1);
if (newp == NULL)
break;
/* copy part up to cursor to new line */
ptr = newp;
vim_memmove(ptr, oldp, (size_t)bd.textcol);
ptr += bd.textcol;
/* may insert some spaces before the new text */
copy_spaces(ptr, (size_t)bd.startspaces);
ptr += bd.startspaces;
/* insert the new text */
for (j = 0; j < count; ++j)
{
vim_memmove(ptr, y_array[i], (size_t)yanklen);
ptr += yanklen;
}
/* may insert some spaces after the new text */
copy_spaces(ptr, (size_t)bd.endspaces);
ptr += bd.endspaces;
/* move the text after the cursor to the end of the line. */
vim_memmove(ptr, oldp + bd.textcol + delcount,
(size_t)(oldlen - bd.textcol - delcount + 1));
ml_replace(curwin->w_cursor.lnum, newp, FALSE);
++curwin->w_cursor.lnum;
if (i == 0)
curwin->w_cursor.col += bd.startspaces;
}
/* for "']" command */
curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1;
curbuf->b_op_end.col = bd.textcol + totlen - 1;
curwin->w_cursor.lnum = lnum;
cursupdate();
updateScreen(VALID_TO_CURSCHAR);
}
else /* not block mode */
{
if (y_type == MCHAR)
{
/* if type is MCHAR, FORWARD is the same as BACKWARD on the next char */
if (dir == FORWARD && gchar_cursor() != NUL)
{
++col;
if (yanklen)
{
++curwin->w_cursor.col;
++curbuf->b_op_end.col;
}
}
new_cursor = curwin->w_cursor;
}
else if (dir == BACKWARD)
/* if type is MLINE, BACKWARD is the same as FORWARD on the previous line */
--lnum;
/*
* simple case: insert into current line
*/
if (y_type == MCHAR && y_size == 1)
{
totlen = count * yanklen;
if (totlen)
{
oldp = ml_get(lnum);
newp = alloc_check((unsigned)(STRLEN(oldp) + totlen + 1));
if (newp == NULL)
return; /* alloc() will give error message */
vim_memmove(newp, oldp, (size_t)col);
ptr = newp + col;
for (i = 0; i < count; ++i)
{
vim_memmove(ptr, y_array[0], (size_t)yanklen);
ptr += yanklen;
}
vim_memmove(ptr, oldp + col, STRLEN(oldp + col) + 1);
ml_replace(lnum, newp, FALSE);
/* put cursor on last putted char */
curwin->w_cursor.col += (colnr_t)(totlen - 1);
}
curbuf->b_op_end = curwin->w_cursor;
updateline();
}
else
{
while (--count >= 0)
{
i = 0;
if (y_type == MCHAR)
{
/*
* Split the current line in two at the insert position.
* First insert y_array[size - 1] in front of second line.
* Then append y_array[0] to first line.
*/
ptr = ml_get(lnum) + col;
totlen = STRLEN(y_array[y_size - 1]);
newp = alloc_check((unsigned)(STRLEN(ptr) + totlen + 1));
if (newp == NULL)
goto error;
STRCPY(newp, y_array[y_size - 1]);
STRCAT(newp, ptr);
/* insert second line */
ml_append(lnum, newp, (colnr_t)0, FALSE);
vim_free(newp);
oldp = ml_get(lnum);
newp = alloc_check((unsigned)(col + yanklen + 1));
if (newp == NULL)
goto error;
/* copy first part of line */
vim_memmove(newp, oldp, (size_t)col);
/* append to first line */
vim_memmove(newp + col, y_array[0], (size_t)(yanklen + 1));
ml_replace(lnum, newp, FALSE);
curwin->w_cursor.lnum = lnum;
i = 1;
}
while (i < y_size)
{
if ((y_type != MCHAR || i < y_size - 1) &&
ml_append(lnum, y_array[i], (colnr_t)0, FALSE) == FAIL)
goto error;
lnum++;
i++;
if (fix_indent)
{
old_pos = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
ptr = ml_get(lnum);
#if defined(SMARTINDENT) || defined(CINDENT)
if (*ptr == '#'
# ifdef SMARTINDENT
&& curbuf->b_p_si
# endif
# ifdef CINDENT
&& curbuf->b_p_cin && in_cinkeys('#', ' ', TRUE)
# endif
)
indent = 0; /* Leave # lines at start */
else
#endif
if (*ptr == NUL)
indent = 0; /* Ignore empty lines */
else if (first_indent)
{
indent_diff = orig_indent - get_indent();
indent = orig_indent;
first_indent = FALSE;
}
else if ((indent = get_indent() + indent_diff) < 0)
indent = 0;
set_indent(indent, TRUE);
curwin->w_cursor = old_pos;
}
++nr_lines;
}
}
/* put '] at last inserted character */
curbuf->b_op_end.lnum = lnum;
col = STRLEN(y_array[y_size - 1]);
if (col > 1)
curbuf->b_op_end.col = col - 1;
else
curbuf->b_op_end.col = 0;
if (y_type == MLINE)
{
curwin->w_cursor.col = 0;
if (dir == FORWARD)
{
updateScreen(NOT_VALID); /* recomp. curwin->w_botline */
++curwin->w_cursor.lnum;
}
/* put cursor on first non-blank in last inserted line */
beginline(TRUE);
}
else /* put cursor on first inserted character */
{
curwin->w_cursor = new_cursor;
}
error:
if (y_type == MLINE) /* for '[ */
{
curbuf->b_op_start.col = 0;
if (dir == FORWARD)
curbuf->b_op_start.lnum++;
}
mark_adjust(curbuf->b_op_start.lnum + (y_type == MCHAR),
MAXLNUM, nr_lines, 0L);
updateScreen(CURSUPD);
}
}
msgmore(nr_lines);
curwin->w_set_curswant = TRUE;
}
/* Return the character name of the register with the given number */
int
get_register_name(num)
int num;
{
if (num == -1)
return '"';
else if (num < 10)
return num + '0';
else if (num == DELETION_REGISTER)
return '-';
#ifdef USE_GUI
else if (num == GUI_SELECTION_REGISTER)
return '*';
#endif
else
return num + 'a' - 10;
}
/*
* display the contents of the yank buffers
*/
void
do_dis(arg)
char_u *arg;
{
register int i, n;
register long j;
register char_u *p;
register struct yankbuf *yb;
char_u name;
if (arg != NULL && *arg == NUL)
arg = NULL;
set_highlight('t'); /* Highlight title */
start_highlight();
MSG_OUTSTR("\n--- Registers ---");
stop_highlight();
for (i = -1; i < NUM_REGISTERS; ++i)
{
if (i == -1)
{
if (y_previous != NULL)
yb = y_previous;
else
yb = &(y_buf[0]);
}
else
yb = &(y_buf[i]);
name = get_register_name(i);
if (yb->y_array != NULL && (arg == NULL ||
vim_strchr(arg, name) != NULL))
{
msg_outchar('\n');
msg_outchar('"');
msg_outchar(name);
MSG_OUTSTR(" ");
n = (int)Columns - 6;
for (j = 0; j < yb->y_size && n > 1; ++j)
{
if (j)
{
MSG_OUTSTR("^J");
n -= 2;
}
for (p = yb->y_array[j]; *p && (n -= charsize(*p)) >= 0; ++p)
msg_outtrans_len(p, 1);
}
if (n > 1 && yb->y_type == MLINE)
MSG_OUTSTR("^J");
flushbuf(); /* show one line at a time */
}
}
/*
* display last inserted text
*/
if ((p = get_last_insert()) != NULL &&
(arg == NULL || vim_strchr(arg, '.') != NULL))
{
MSG_OUTSTR("\n\". ");
dis_msg(p, TRUE);
}
/*
* display last command line
*/
if (last_cmdline != NULL && (arg == NULL || vim_strchr(arg, ':') != NULL))
{
MSG_OUTSTR("\n\": ");
dis_msg(last_cmdline, FALSE);
}
/*
* display current file name
*/
if (curbuf->b_xfilename != NULL &&
(arg == NULL || vim_strchr(arg, '%') != NULL))
{
MSG_OUTSTR("\n\"% ");
dis_msg(curbuf->b_xfilename, FALSE);
}
}
/*
* display a string for do_dis()
* truncate at end of screen line
*/
void
dis_msg(p, skip_esc)
char_u *p;
int skip_esc; /* if TRUE, ignore trailing ESC */
{
int n;
n = (int)Columns - 6;
while (*p && !(*p == ESC && skip_esc && *(p + 1) == NUL) &&
(n -= charsize(*p)) >= 0)
msg_outtrans_len(p++, 1);
}
/*
* join 'count' lines (minimal 2), including u_save()
*/
void
do_do_join(count, insert_space, redraw)
long count;
int insert_space;
int redraw; /* can redraw, curwin->w_col valid */
{
if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
(linenr_t)(curwin->w_cursor.lnum + count)) == FAIL)
return;
if (count > 10)
redraw = FALSE; /* don't redraw each small change */
while (--count > 0)
{
line_breakcheck();
if (got_int || do_join(insert_space, redraw) == FAIL)
{
beep_flush();
break;
}
}
if (redraw)
redraw_later(VALID_TO_CURSCHAR);
else
redraw_later(NOT_VALID);
/*
* Need to update the screen if the line where the cursor is became too
* long to fit on the screen.
*/
cursupdate();
}
/*
* Join two lines at the cursor position.
*
* return FAIL for failure, OK ohterwise
*/
int
do_join(insert_space, redraw)
int insert_space;
int redraw; /* should only be TRUE when curwin->w_row valid */
{
char_u *curr;
char_u *next;
char_u *newp;
int endcurr1, endcurr2;
int currsize; /* size of the current line */
int nextsize; /* size of the next line */
int spaces; /* number of spaces to insert */
int rows_to_del = 0;/* number of rows on screen to delete */
linenr_t t;
if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
return FAIL; /* can't join on last line */
if (redraw)
rows_to_del = plines_m(curwin->w_cursor.lnum,
curwin->w_cursor.lnum + 1);
curr = ml_get_curline();
currsize = STRLEN(curr);
endcurr1 = endcurr2 = NUL;
if (currsize > 0)
{
endcurr1 = *(curr + currsize - 1);
if (currsize > 1)
endcurr2 = *(curr + currsize - 2);
}
next = ml_get((linenr_t)(curwin->w_cursor.lnum + 1));
spaces = 0;
if (insert_space)
{
next = skipwhite(next);
spaces = 1;
if (*next == ')' || currsize == 0)
spaces = 0;
else
{
if (endcurr1 == ' ' || endcurr1 == TAB)
{
spaces = 0;
if (currsize > 1)
endcurr1 = endcurr2;
}
if (p_js && vim_strchr((char_u *)".!?", endcurr1) != NULL)
spaces = 2;
}
}
nextsize = STRLEN(next);
newp = alloc_check((unsigned)(currsize + nextsize + spaces + 1));
if (newp == NULL)
return FAIL;
/*
* Insert the next line first, because we already have that pointer.
* Curr has to be obtained again, because getting next will have
* invalidated it.
*/
vim_memmove(newp + currsize + spaces, next, (size_t)(nextsize + 1));
curr = ml_get_curline();
vim_memmove(newp, curr, (size_t)currsize);
copy_spaces(newp + currsize, (size_t)spaces);
ml_replace(curwin->w_cursor.lnum, newp, FALSE);
/*
* Delete the following line. To do this we move the cursor there
* briefly, and then move it back. After dellines() the cursor may
* have moved up (last line deleted), so the current lnum is kept in t.
*/
t = curwin->w_cursor.lnum;
++curwin->w_cursor.lnum;
dellines(1L, FALSE, FALSE);
curwin->w_cursor.lnum = t;
/*
* the number of rows on the screen is reduced by the difference
* in number of rows of the two old lines and the one new line
*/
if (redraw)
{
rows_to_del -= plines(curwin->w_cursor.lnum);
if (rows_to_del > 0)
win_del_lines(curwin, curwin->w_cline_row + curwin->w_cline_height,
rows_to_del, TRUE, TRUE);
}
/*
* go to first character of the joined line
*/
if (currsize == 0)
curwin->w_cursor.col = 0;
else
{
curwin->w_cursor.col = currsize - 1;
(void)oneright();
}
CHANGED;
return OK;
}
/*
* Return TRUE if the two comment leaders given are the same. The cursor is
* in the first line. White-space is ignored. Note that the whole of
* 'leader1' must match 'leader2_len' characters from 'leader2' -- webb
*/
static int
same_leader(leader1_len, leader1_flags, leader2_len, leader2_flags)
int leader1_len;
char_u *leader1_flags;
int leader2_len;
char_u *leader2_flags;
{
int idx1 = 0, idx2 = 0;
char_u *p;
char_u *line1;
char_u *line2;
if (leader1_len == 0)
return (leader2_len == 0);
/*
* If first leader has 'f' flag, the lines can be joined only if the
* second line does not have a leader.
* If first leader has 'e' flag, the lines can never be joined.
* If fist leader has 's' flag, the lines can only be joined if there is
* some text after it and the second line has the 'm' flag.
*/
if (leader1_flags != NULL)
{
for (p = leader1_flags; *p && *p != ':'; ++p)
{
if (*p == COM_FIRST)
return (leader2_len == 0);
if (*p == COM_END)
return FALSE;
if (*p == COM_START)
{
if (*(ml_get_curline() + leader1_len) == NUL)
return FALSE;
if (leader2_flags == NULL || leader2_len == 0)
return FALSE;
for (p = leader2_flags; *p && *p != ':'; ++p)
if (*p == COM_MIDDLE)
return TRUE;
return FALSE;
}
}
}
/*
* Get current line and next line, compare the leaders.
* The first line has to be saved, only one line can be locked at a time.
*/
line1 = strsave(ml_get_curline());
if (line1 != NULL)
{
for (idx1 = 0; vim_iswhite(line1[idx1]); ++idx1)
;
line2 = ml_get(curwin->w_cursor.lnum + 1);
for (idx2 = 0; idx2 < leader2_len; ++idx2)
{
if (!vim_iswhite(line2[idx2]))
{
if (line1[idx1++] != line2[idx2])
break;
}
else
while (vim_iswhite(line1[idx1]))
++idx1;
}
vim_free(line1);
}
return (idx2 == leader2_len && idx1 == leader1_len);
}
/*
* implementation of the format operator 'Q'
*/
void
do_format()
{
long old_line_count = curbuf->b_ml.ml_line_count;
int prev_is_blank = FALSE;
int is_end_block = TRUE;
int next_is_end_block;
int leader_len = 0; /* init for gcc */
int next_leader_len;
char_u *leader_flags = NULL;
char_u *next_leader_flags;
int advance = TRUE;
int second_indent = -1;
int do_second_indent;
int first_par_line = TRUE;
if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
(linenr_t)(curwin->w_cursor.lnum + op_line_count)) == FAIL)
return;
/* check for 'q' and '2' in 'formatoptions' */
fo_do_comments = has_format_option(FO_Q_COMS);
do_second_indent = has_format_option(FO_Q_SECOND);
/*
* get info about the previous and current line.
*/
if (curwin->w_cursor.lnum > 1)
is_end_block = fmt_end_block(curwin->w_cursor.lnum - 1,
&next_leader_len, &next_leader_flags);
next_is_end_block = fmt_end_block(curwin->w_cursor.lnum,
&next_leader_len, &next_leader_flags);
curwin->w_cursor.lnum--;
while (--op_line_count >= 0)
{
/*
* Advance to next block.
*/
if (advance)
{
curwin->w_cursor.lnum++;
prev_is_blank = is_end_block;
is_end_block = next_is_end_block;
leader_len = next_leader_len;
leader_flags = next_leader_flags;
}
/*
* The last line to be formatted.
*/
if (op_line_count == 0)
{
next_is_end_block = TRUE;
next_leader_len = 0;
next_leader_flags = NULL;
}
else
next_is_end_block = fmt_end_block(curwin->w_cursor.lnum + 1,
&next_leader_len, &next_leader_flags);
advance = TRUE;
/*
* For the first line of a paragraph, check indent of second line.
* Don't do this for comments and empty lines.
*/
if (first_par_line && do_second_indent &&
prev_is_blank && !is_end_block &&
curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count &&
leader_len == 0 && next_leader_len == 0 &&
!lineempty(curwin->w_cursor.lnum + 1))
second_indent = get_indent_lnum(curwin->w_cursor.lnum + 1);
/*
* Skip end-of-block (blank) lines
*/
if (is_end_block)
{
}
/*
* If we have got to the end of a paragraph, format it.
*/
else if (next_is_end_block || !same_leader(leader_len, leader_flags,
next_leader_len, next_leader_flags))
{
/* replace indent in first line with minimal number of tabs and
* spaces, according to current options */
set_indent(get_indent(), TRUE);
/* put cursor on last non-space */
coladvance(MAXCOL);
while (curwin->w_cursor.col && vim_isspace(gchar_cursor()))
dec_cursor();
curs_columns(FALSE); /* update curwin->w_virtcol */
/* do the formatting */
State = INSERT; /* for Opencmd() */
insertchar(NUL, TRUE, second_indent);
State = NORMAL;
first_par_line = TRUE;
second_indent = -1;
}
else
{
/*
* Still in same paragraph, so join the lines together.
* But first delete the comment leader from the second line.
*/
advance = FALSE;
curwin->w_cursor.lnum++;
curwin->w_cursor.col = 0;
while (next_leader_len--)
delchar(FALSE);
curwin->w_cursor.lnum--;
if (do_join(TRUE, FALSE) == FAIL)
{
beep_flush();
break;
}
first_par_line = FALSE;
}
}
fo_do_comments = FALSE;
/*
* Leave the cursor at the first non-blank of the last formatted line.
* If the cursor was move one line back (e.g. with "Q}") go to the next
* line, so "." will do the next lines.
*/
if (op_end_adjusted && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
++curwin->w_cursor.lnum;
beginline(TRUE);
updateScreen(NOT_VALID);
msgmore(curbuf->b_ml.ml_line_count - old_line_count);
}
/*
* Blank lines, and lines containing only the comment leader, are left
* untouched by the formatting. The function returns TRUE in this
* case. It also returns TRUE when a line starts with the end of a comment
* ('e' in comment flags), so that this line is skipped, and not joined to the
* previous line. A new paragraph starts after a blank line, or when the
* comment leader changes -- webb.
*/
static int
fmt_end_block(lnum, leader_len, leader_flags)
linenr_t lnum;
int *leader_len;
char_u **leader_flags;
{
char_u *flags = NULL; /* init for GCC */
char_u *ptr;
ptr = ml_get(lnum);
*leader_len = get_leader_len(ptr, leader_flags);
if (*leader_len > 0)
{
/*
* Search for 'e' flag in comment leader flags.
*/
flags = *leader_flags;
while (*flags && *flags != ':' && *flags != COM_END)
++flags;
}
return (ptr[*leader_len] == NUL ||
(*leader_len > 0 && *flags == COM_END) ||
startPS(lnum, NUL, FALSE));
}
/*
* prepare a few things for block mode yank/delete/tilde
*
* for delete:
* - textlen includes the first/last char to be (partly) deleted
* - start/endspaces is the number of columns that are taken by the
* first/last deleted char minus the number of columns that have to be deleted.
* for yank and tilde:
* - textlen includes the first/last char to be wholly yanked
* - start/endspaces is the number of columns of the first/last yanked char
* that are to be yanked.
*/
static void
block_prep(bd, lnum, is_del)
struct block_def *bd;
linenr_t lnum;
int is_del;
{
colnr_t vcol;
int incr = 0;
char_u *pend;
char_u *pstart;
bd->startspaces = 0;
bd->endspaces = 0;
bd->textlen = 0;
bd->textcol = 0;
vcol = 0;
pstart = ml_get(lnum);
while (vcol < op_start_vcol && *pstart)
{
/* Count a tab for what it's worth (if list mode not on) */
incr = lbr_chartabsize(pstart, (colnr_t)vcol);
vcol += incr;
++pstart;
++bd->textcol;
}
if (vcol < op_start_vcol) /* line too short */
{
if (!is_del)
bd->endspaces = op_end_vcol - op_start_vcol + 1;
}
else /* vcol >= op_start_vcol */
{
bd->startspaces = vcol - op_start_vcol;
if (is_del && vcol > op_start_vcol)
bd->startspaces = incr - bd->startspaces;
pend = pstart;
if (vcol > op_end_vcol) /* it's all in one character */
{
bd->startspaces = op_end_vcol - op_start_vcol + 1;
if (is_del)
bd->startspaces = incr - bd->startspaces;
}
else
{
while (vcol <= op_end_vcol && *pend)
{
/* Count a tab for what it's worth (if list mode not on) */
incr = lbr_chartabsize(pend, (colnr_t)vcol);
vcol += incr;
++pend;
}
if (vcol < op_end_vcol && !is_del) /* line too short */
{
bd->endspaces = op_end_vcol - vcol;
}
else if (vcol > op_end_vcol)
{
bd->endspaces = vcol - op_end_vcol - 1;
if (!is_del && pend != pstart && bd->endspaces)
--pend;
}
}
if (is_del && bd->startspaces)
{
--pstart;
--bd->textcol;
}
bd->textlen = (int)(pend - pstart);
}
bd->textstart = pstart;
}
#define NUMBUFLEN 30
/*
* add or subtract 'Prenum1' from a number in a line
* 'command' is CTRL-A for add, CTRL-X for subtract
*
* return FAIL for failure, OK otherwise
*/
int
do_addsub(command, Prenum1)
int command;
linenr_t Prenum1;
{
register int col;
char_u buf[NUMBUFLEN];
int hex; /* 'X': hexadecimal; '0': octal */
static int hexupper = FALSE; /* 0xABC */
long n;
char_u *ptr;
int i;
int c;
int zeros = 0; /* number of leading zeros */
int digits = 0; /* number of digits in the number */
ptr = ml_get_curline();
col = curwin->w_cursor.col;
/* first check if we are on a hexadecimal number */
while (col > 0 && isxdigit(ptr[col]))
--col;
if (col > 0 && (ptr[col] == 'X' || ptr[col] == 'x') &&
ptr[col - 1] == '0' && isxdigit(ptr[col + 1]))
--col; /* found hexadecimal number */
else
{
/* first search forward and then backward for start of number */
col = curwin->w_cursor.col;
while (ptr[col] != NUL && !isdigit(ptr[col]))
++col;
while (col > 0 && isdigit(ptr[col - 1]))
--col;
}
if (isdigit(ptr[col]) && u_save_cursor() == OK)
{
ptr = ml_get_curline(); /* get it again, because
u_save may have changed it */
curwin->w_set_curswant = TRUE;
hex = 0; /* default is decimal */
if (ptr[col] == '0') /* could be hex or octal */
{
hex = TO_UPPER(ptr[col + 1]); /* assume hexadecimal */
if (hex != 'X' || !isxdigit(ptr[col + 2]))
{
if (isdigit(hex))
hex = '0'; /* octal */
else
hex = 0; /* 0 by itself is decimal */
}
}
if (!hex && col > 0 && ptr[col - 1] == '-')
--col;
ptr += col;
/*
* we copy the number into a buffer because some versions of sscanf
* cannot handle characters with the upper bit set, making some special
* characters handled like digits.
*/
for (i = 0; *ptr && !(*ptr & 0x80) && i < NUMBUFLEN - 1; ++i)
buf[i] = *ptr++;
buf[i] = NUL;
if (hex == '0')
sscanf((char *)buf, "%lo", &n);
else if (hex)
sscanf((char *)buf + 2, "%lx", &n); /* "%X" doesn't work! */
else
n = atol((char *)buf);
if (command == Ctrl('A'))
n += Prenum1;
else
n -= Prenum1;
if (hex == 'X') /* skip the '0x' */
col += 2;
else if (hex == '0')
col++; /* skip the '0' */
curwin->w_cursor.col = col;
c = gchar_cursor();
do /* delete the old number */
{
if (digits == 0 && c == '0')
++zeros; /* count the number of leading zeros */
else
++digits; /* count the number of digits */
if (isalpha(c))
{
if (isupper(c))
hexupper = TRUE;
else
hexupper = FALSE;
}
(void)delchar(FALSE);
c = gchar_cursor();
}
while (hex ? (hex == '0' ? c >= '0' && c <= '7' :
isxdigit(c)) : isdigit(c));
if (hex == 0)
sprintf((char *)buf, "%ld", n);
else
{
if (hex == '0')
sprintf((char *)buf, "%lo", n);
else if (hex && hexupper)
sprintf((char *)buf, "%lX", n);
else if (hex)
sprintf((char *)buf, "%lx", n);
/* adjust number of zeros to the new number of digits, so the
* total length of the number remains the same */
if (zeros)
{
zeros += digits - STRLEN(buf);
if (zeros > 0)
{
vim_memmove(buf + zeros, buf, STRLEN(buf) + 1);
for (col = 0; zeros > 0; --zeros)
buf[col++] = '0';
}
}
}
ins_str(buf); /* insert the new number */
--curwin->w_cursor.col;
updateline();
return OK;
}
else
{
beep_flush();
return FAIL;
}
}
#ifdef VIMINFO
int
read_viminfo_register(line, fp, force)
char_u *line;
FILE *fp;
int force;
{
int eof;
int do_it = TRUE;
int size;
int limit;
int i;
int set_prev = FALSE;
char_u *str;
char_u **array = NULL;
/* We only get here (hopefully) if line[0] == '"' */
str = line + 1;
if (*str == '"')
{
set_prev = TRUE;
str++;
}
if (!isalnum(*str) && *str != '-')
{
if (viminfo_error("Illegal register name", line))
return TRUE; /* too many errors, pretend end-of-file */
do_it = FALSE;
}
yankbuffer = *str++;
get_yank_buffer(FALSE);
yankbuffer = 0;
if (!force && y_current->y_array != NULL)
do_it = FALSE;
size = 0;
limit = 100; /* Optimized for registers containing <= 100 lines */
if (do_it)
{
if (set_prev)
y_previous = y_current;
vim_free(y_current->y_array);
array = y_current->y_array =
(char_u **)alloc((unsigned)(limit * sizeof(char_u *)));
str = skipwhite(str);
if (STRNCMP(str, "CHAR", 4) == 0)
y_current->y_type = MCHAR;
else if (STRNCMP(str, "BLOCK", 5) == 0)
y_current->y_type = MBLOCK;
else
y_current->y_type = MLINE;
}
while (!(eof = vim_fgets(line, LSIZE, fp)) && line[0] == TAB)
{
if (do_it)
{
if (size >= limit)
{
y_current->y_array = (char_u **)
alloc((unsigned)(limit * 2 * sizeof(char_u *)));
for (i = 0; i < limit; i++)
y_current->y_array[i] = array[i];
vim_free(array);
limit *= 2;
array = y_current->y_array;
}
viminfo_readstring(line);
str = strsave(line + 1);
if (str != NULL)
array[size++] = str;
else
do_it = FALSE;
}
}
if (do_it)
{
if (size == 0)
{
vim_free(array);
y_current->y_array = NULL;
}
else if (size < limit)
{
y_current->y_array =
(char_u **)alloc((unsigned)(size * sizeof(char_u *)));
for (i = 0; i < size; i++)
y_current->y_array[i] = array[i];
vim_free(array);
}
y_current->y_size = size;
}
return eof;
}
void
write_viminfo_registers(fp)
FILE *fp;
{
int i, j;
char_u *type;
char_u c;
int num_lines;
int max_num_lines;
fprintf(fp, "\n# Registers:\n");
max_num_lines = get_viminfo_parameter('"');
if (max_num_lines == 0)
return;
for (i = 0; i < NUM_REGISTERS; i++)
{
if (y_buf[i].y_array == NULL)
continue;
#ifdef USE_GUI
/* Skip '*' register, we don't want it back next time */
if (i == GUI_SELECTION_REGISTER)
continue;
#endif
switch (y_buf[i].y_type)
{
case MLINE:
type = (char_u *)"LINE";
break;
case MCHAR:
type = (char_u *)"CHAR";
break;
case MBLOCK:
type = (char_u *)"BLOCK";
break;
default:
sprintf((char *)IObuff, "Unknown register type %d",
y_buf[i].y_type);
emsg(IObuff);
type = (char_u *)"LINE";
break;
}
if (y_previous == &y_buf[i])
fprintf(fp, "\"");
if (i == DELETION_REGISTER)
c = '-';
else if (i < 10)
c = '0' + i;
else
c = 'a' + i - 10;
fprintf(fp, "\"%c\t%s\n", c, type);
num_lines = y_buf[i].y_size;
/* If max_num_lines < 0, then we save ALL the lines in the register */
if (max_num_lines > 0 && num_lines > max_num_lines)
num_lines = max_num_lines;
for (j = 0; j < num_lines; j++)
{
putc('\t', fp);
viminfo_writestring(fp, y_buf[i].y_array[j]);
}
}
}
#endif /* VIMINFO */
#if defined(USE_GUI) || defined(PROTO)
/*
* Text selection stuff that uses the GUI selection register '*'. When using a
* GUI this may be text from another window, otherwise it is the last text we
* had highlighted with VIsual mode. With mouse support, clicking the middle
* button performs the paste, otherwise you will need to do <"*p>.
*/
void
gui_free_selection()
{
struct yankbuf *y_ptr = y_current;
y_current = &y_buf[GUI_SELECTION_REGISTER]; /* '*' register */
free_yank_all();
y_current->y_size = 0;
y_current = y_ptr;
}
/*
* Get the selected text and put it in the gui text register '*'.
*/
void
gui_get_selection()
{
struct yankbuf *old_y_previous, *old_y_current;
char_u old_yankbuffer;
FPOS old_cursor, old_visual;
int old_op_type;
if (gui.selection.owned)
{
if (y_buf[GUI_SELECTION_REGISTER].y_array != NULL)
return;
/* Get the text between gui.selection.start & gui.selection.end */
old_y_previous = y_previous;
old_y_current = y_current;
old_yankbuffer = yankbuffer;
old_cursor = curwin->w_cursor;
old_visual = VIsual;
old_op_type = op_type;
yankbuffer = '*';
op_type = YANK;
do_pending_operator('y', NUL, FALSE, NULL, NULL, 0, TRUE, TRUE);
y_previous = old_y_previous;
y_current = old_y_current;
yankbuffer = old_yankbuffer;
curwin->w_cursor = old_cursor;
VIsual = old_visual;
op_type = old_op_type;
}
else
{
gui_free_selection();
/* Try to get selected text from another window */
gui_request_selection();
}
}
/* Convert from the GUI selection string into the '*' register */
void
gui_yank_selection(type, str, len)
int type;
char_u *str;
long_u len;
{
struct yankbuf *y_ptr = &y_buf[GUI_SELECTION_REGISTER]; /* '*' register */
int lnum;
int start;
int i;
gui_free_selection();
/* Count the number of lines within the string */
y_ptr->y_size = 1;
for (i = 0; i < len; i++)
if (str[i] == '\n')
y_ptr->y_size++;
if (type != MCHAR && i > 0 && str[i - 1] == '\n')
y_ptr->y_size--;
y_ptr->y_array = (char_u **)lalloc(y_ptr->y_size * sizeof(char_u *), TRUE);
if (y_ptr->y_array == NULL)
return;
y_ptr->y_type = type;
lnum = 0;
start = 0;
for (i = 0; i < len; i++)
{
if (str[i] == NUL)
str[i] = '\n';
else if (str[i] == '\n')
{
str[i] = NUL;
if (type == MCHAR || i != len - 1)
{
if ((y_ptr->y_array[lnum] = strsave(str + start)) == NULL)
{
y_ptr->y_size = lnum;
return;
}
lnum++;
start = i + 1;
}
}
}
if ((y_ptr->y_array[lnum] = alloc(i - start + 1)) == NULL)
return;
if (i - start > 0)
STRNCPY(y_ptr->y_array[lnum], str + start, i - start);
y_ptr->y_array[lnum][i - start] = NUL;
y_ptr->y_size = lnum + 1;
}
/*
* Convert the '*' register into a GUI selection string returned in *str with
* length *len.
*/
int
gui_convert_selection(str, len)
char_u **str;
long_u *len;
{
struct yankbuf *y_ptr = &y_buf[GUI_SELECTION_REGISTER]; /* '*' register */
char_u *p;
int lnum;
int i, j;
*str = NULL;
*len = 0;
if (y_ptr->y_array == NULL)
return -1;
for (i = 0; i < y_ptr->y_size; i++)
*len += STRLEN(y_ptr->y_array[i]) + 1;
/*
* Don't want newline character at end of last line if we're in MCHAR mode.
*/
if (y_ptr->y_type == MCHAR && *len > 1)
(*len)--;
p = *str = lalloc(*len, TRUE);
if (p == NULL)
return -1;
lnum = 0;
for (i = 0, j = 0; i < *len; i++, j++)
{
if (y_ptr->y_array[lnum][j] == '\n')
p[i] = NUL;
else if (y_ptr->y_array[lnum][j] == NUL)
{
p[i] = '\n';
lnum++;
j = -1;
}
else
p[i] = y_ptr->y_array[lnum][j];
}
return y_ptr->y_type;
}
#endif /* USE_GUI || PROTO */
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