ops.c
资源名称:vim53src.zip [点击查看]
上传用户:gddssl
上传日期:2007-01-06
资源大小:1003k
文件大小:86k
源码类别:
编辑器/阅读器
开发平台:
DOS
- /* vi:set ts=8 sts=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: op_shift, op_delete, op_tilde,
- * op_change, op_yank, do_put, do_join
- */
- #include "vim.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 = Clipboard register (*). Only if USE_CLIPBOARD defined
- */
- #ifdef USE_CLIPBOARD
- # define NUM_REGISTERS 38
- #else
- # define NUM_REGISTERS 37
- #endif
- /*
- * Symbolic names for some registers.
- */
- #define DELETION_REGISTER 36
- #ifdef USE_CLIPBOARD
- # define CLIPBOARD_REGISTER 37
- #endif
- /*
- * Each yank register is an array of pointers to lines.
- */
- static struct yankreg
- {
- 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_regs[NUM_REGISTERS];
- static struct yankreg *y_current; /* ptr to current yankreg */
- static int y_append; /* TRUE when appending */
- static struct yankreg *y_previous = NULL; /* ptr to last written yankreg */
- /*
- * structure used by block_prep, op_delete and op_yank for blockwise operators
- */
- struct block_def
- {
- int startspaces;
- int endspaces;
- int textlen;
- char_u *textstart;
- colnr_t textcol;
- };
- #ifdef WANT_EVAL
- static char_u *get_expr_line __ARGS((void));
- #endif
- static void get_yank_register __ARGS((int regname, int writing));
- static int stuff_yank __ARGS((int, char_u *));
- static int put_in_typebuf __ARGS((char_u *s, int colon));
- static void stuffescaped __ARGS((char_u *arg));
- static int get_spec_reg __ARGS((int regname, char_u **argp, int *allocated, int errmsg));
- static void free_yank __ARGS((long));
- static void free_yank_all __ARGS((void));
- static void block_prep __ARGS((OPARG *oap, struct block_def *, linenr_t, int));
- #if defined(USE_CLIPBOARD) || defined(WANT_EVAL)
- static void str_to_reg __ARGS((struct yankreg *y_ptr, int type, char_u *str, long len));
- #endif
- static int same_leader __ARGS((int, char_u *, int, char_u *));
- static int fmt_check_par __ARGS((linenr_t, int *, char_u **));
- /*
- * op_shift - handle a shift operation
- */
- void
- op_shift(oap, curs_top, amount)
- OPARG *oap;
- int curs_top;
- int amount;
- {
- long i;
- int first_char;
- if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
- (linenr_t)(curwin->w_cursor.lnum + oap->line_count)) == FAIL)
- return;
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- for (i = oap->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 (oap->block_mode)
- shift the block, not the whole line
- else */
- shift_line(oap->op_type == OP_LSHIFT, p_sr, amount);
- }
- ++curwin->w_cursor.lnum;
- }
- if (curs_top) /* put cursor on first line, for ">>" */
- {
- curwin->w_cursor.lnum -= oap->line_count;
- beginline(BL_SOL | BL_FIX); /* shift_line() may have set cursor.col */
- }
- else
- --curwin->w_cursor.lnum; /* put cursor on last line, for ":>" */
- update_topline();
- update_screen(NOT_VALID);
- if (oap->line_count > p_report)
- smsg((char_u *)"%ld line%s %ced %d time%s", oap->line_count,
- plural(oap->line_count), (oap->op_type == OP_RSHIFT) ? '>' : '<',
- amount, plural((long)amount));
- /*
- * Set "'[" and "']" marks.
- */
- curbuf->b_op_start = oap->start;
- curbuf->b_op_end = oap->end;
- }
- /*
- * 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;
- {
- int count;
- 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)
- /*
- * op_reindent - handle reindenting a block of lines for C or lisp.
- *
- * mechanism copied from op_shift, above
- */
- void
- op_reindent(oap, how)
- OPARG *oap;
- int (*how) __ARGS((void));
- {
- long i;
- char_u *l;
- int count;
- if (u_save((linenr_t)(curwin->w_cursor.lnum - 1),
- (linenr_t)(curwin->w_cursor.lnum + oap->line_count)) == FAIL)
- return;
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- for (i = oap->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 == oap->line_count - 1)
- && oap->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 != oap->line_count - 1 || oap->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 -= oap->line_count;
- beginline(BL_SOL | BL_FIX);
- update_topline();
- update_screen(NOT_VALID);
- if (oap->line_count > p_report)
- {
- i = oap->line_count - (i + 1);
- smsg((char_u *)"%ld line%s indented ", i, plural(i));
- }
- /* set '[ and '] marks */
- curbuf->b_op_start = oap->start;
- curbuf->b_op_end = oap->end;
- }
- #endif /* defined(LISPINDENT) || defined(CINDENT) */
- #ifdef WANT_EVAL
- /*
- * Keep the last expression line here, for repeating.
- */
- static char_u *expr_line = NULL;
- /*
- * Get an expression for the ""=expr1" or "CTRL-R =expr1"
- * Returns '=' when OK, NUL otherwise.
- */
- int
- get_expr_register()
- {
- char_u *new_line;
- new_line = getcmdline('=', 0L, 0);
- if (new_line == NULL)
- return NUL;
- if (*new_line == NUL) /* use previous line */
- vim_free(new_line);
- else
- set_expr_line(new_line);
- return '=';
- }
- /*
- * Set the expression for the '=' register.
- * Argument must be an allocated string.
- */
- void
- set_expr_line(new_line)
- char_u *new_line;
- {
- vim_free(expr_line);
- expr_line = new_line;
- }
- /*
- * Get the result of the '=' register expression.
- * Returns a pointer to allocated memory, or NULL for failure.
- */
- static char_u *
- get_expr_line()
- {
- if (expr_line == NULL)
- return NULL;
- return eval_to_string(expr_line, NULL);
- }
- #endif /* WANT_EVAL */
- /*
- * Check if 'regname' is a valid name of a yank register.
- * Note: There is no check for 0 (default register), caller should do this
- */
- int
- valid_yank_reg(regname, writing)
- int regname;
- int writing; /* if TRUE check for writable registers */
- {
- if (regname > '~')
- return FALSE;
- if ( isalnum(regname)
- || (!writing && vim_strchr((char_u *)
- #ifdef WANT_EVAL
- ".%#:="
- #else
- ".%#:"
- #endif
- , regname) != NULL)
- || regname == '"'
- || regname == '-'
- || regname == '_'
- #ifdef USE_CLIPBOARD
- || (clipboard.available && regname == '*')
- #endif
- )
- return TRUE;
- return FALSE;
- }
- /*
- * Set y_current and y_append, according to the value of "regname".
- * Cannot handle the '_' register.
- *
- * If regname is 0 and writing, use register 0
- * If regname is 0 and reading, use previous register
- */
- static void
- get_yank_register(regname, writing)
- int regname;
- int writing;
- {
- int i;
- y_append = FALSE;
- if (((regname == 0 && !writing) || regname == '"') && y_previous != NULL)
- {
- y_current = y_previous;
- return;
- }
- i = regname;
- if (isdigit(i))
- i -= '0';
- else if (islower(i))
- i -= 'a' - 10;
- else if (isupper(i))
- {
- i -= 'A' - 10;
- y_append = TRUE;
- }
- else if (regname == '-')
- i = DELETION_REGISTER;
- #ifdef USE_CLIPBOARD
- else if (clipboard.available && regname == '*')
- i = CLIPBOARD_REGISTER;
- #endif
- else /* not 0-9, a-z, A-Z or '-': use register 0 */
- i = 0;
- y_current = &(y_regs[i]);
- if (writing) /* remember the register we write into for do_put() */
- y_previous = y_current;
- }
- /*
- * return TRUE if the current yank register has type MLINE
- */
- int
- yank_register_mline(regname)
- int regname;
- {
- if (regname != 0 && !valid_yank_reg(regname, FALSE))
- return FALSE;
- if (regname == '_') /* black hole is always empty */
- return FALSE;
- get_yank_register(regname, FALSE);
- return (y_current->y_type == MLINE);
- }
- /*
- * start or stop recording into a yank register
- *
- * return FAIL for failure, OK otherwise
- */
- int
- do_record(c)
- int c;
- {
- char_u *p;
- static int regname;
- struct yankreg *old_y_previous, *old_y_current;
- 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();
- regname = c;
- retval = OK;
- }
- }
- else /* stop recording */
- {
- Recording = FALSE;
- MSG("");
- p = get_recorded();
- if (p == NULL)
- retval = FAIL;
- else
- {
- /*
- * We don't want to change the default register here, so save and
- * restore the current register name.
- */
- old_y_previous = y_previous;
- old_y_current = y_current;
- retval = stuff_yank(regname, p);
- y_previous = old_y_previous;
- y_current = old_y_current;
- }
- }
- return retval;
- }
- /*
- * Stuff string 'p' into yank register 'regname' as a single line (append if
- * uppercase). 'p' must have been alloced.
- *
- * return FAIL for failure, OK otherwise
- */
- static int
- stuff_yank(regname, p)
- int regname;
- char_u *p;
- {
- char_u *lp;
- char_u **pp;
- /* check for read-only register */
- if (regname != 0 && !valid_yank_reg(regname, TRUE))
- {
- vim_free(p);
- return FAIL;
- }
- if (regname == '_') /* black hole: don't do anything */
- {
- vim_free(p);
- return OK;
- }
- get_yank_register(regname, TRUE);
- if (y_append && 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 register: copy it into the stuff buffer
- *
- * return FAIL for failure, OK otherwise
- */
- int
- do_execreg(regname, colon, addcr)
- int regname;
- 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 retval = OK;
- if (regname == '@') /* repeat previous one */
- regname = lastc;
- /* check for valid regname */
- if (regname == '%' || regname == '#' || !valid_yank_reg(regname, FALSE))
- return FAIL;
- lastc = regname;
- if (regname == '_') /* black hole: don't stuff anything */
- return OK;
- if (regname == ':') /* 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;
- retval = put_in_typebuf(last_cmdline, TRUE);
- }
- #ifdef WANT_EVAL
- else if (regname == '=')
- {
- p = get_expr_line();
- if (p == NULL)
- return FAIL;
- retval = put_in_typebuf(p, colon);
- vim_free(p);
- }
- #endif
- else if (regname == '.') /* use last inserted text */
- {
- p = get_last_insert_save();
- if (p == NULL)
- {
- EMSG(e_noinstext);
- return FAIL;
- }
- retval = put_in_typebuf(p, colon);
- vim_free(p);
- }
- else
- {
- get_yank_register(regname, 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 retval;
- }
- static int
- put_in_typebuf(s, colon)
- char_u *s;
- int colon; /* add ':' before the line */
- {
- int retval = OK;
- if (colon)
- retval = ins_typebuf((char_u *)"n", FALSE, 0, TRUE);
- if (retval == OK)
- retval = ins_typebuf(s, FALSE, 0, TRUE);
- if (colon && retval == OK)
- retval = ins_typebuf((char_u *)":", FALSE, 0, TRUE);
- return retval;
- }
- /*
- * Insert a yank register: 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
- insert_reg(regname, literally)
- int regname;
- int literally; /* insert literally, not as if typed */
- {
- long i;
- int retval = OK;
- char_u *arg;
- int allocated;
- /*
- * 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.
- */
- ui_breakcheck();
- if (got_int)
- return FAIL;
- /* check for valid regname */
- if (regname != NUL && !valid_yank_reg(regname, FALSE))
- return FAIL;
- #ifdef USE_CLIPBOARD
- if (regname == '*')
- clip_get_selection(); /* may fill * register */
- #endif
- if (regname == '.') /* insert last inserted text */
- retval = stuff_inserted(NUL, 1L, TRUE);
- else if (get_spec_reg(regname, &arg, &allocated, TRUE))
- {
- if (arg == NULL)
- return FAIL;
- if (literally)
- stuffescaped(arg);
- else
- stuffReadbuff(arg);
- if (allocated)
- vim_free(arg);
- }
- else /* name or number register */
- {
- get_yank_register(regname, FALSE);
- if (y_current->y_array == NULL)
- retval = FAIL;
- else
- {
- for (i = 0; i < y_current->y_size; ++i)
- {
- if (literally)
- stuffescaped(y_current->y_array[i]);
- else
- stuffReadbuff(y_current->y_array[i]);
- /*
- * Insert a newline between lines and after last line if
- * y_type is MLINE.
- */
- if (y_current->y_type == MLINE || i < y_current->y_size - 1)
- stuffcharReadbuff('n');
- }
- }
- }
- return retval;
- }
- /*
- * Stuff a string into the typeahead buffer, such that edit() will insert it
- * literally.
- */
- static void
- stuffescaped(arg)
- char_u *arg;
- {
- while (*arg)
- {
- if ((*arg < ' ' && *arg != TAB) || *arg > '~')
- stuffcharReadbuff(Ctrl('V'));
- stuffcharReadbuff(*arg++);
- }
- }
- /*
- * If "regname" is a special register, return a pointer to its value.
- */
- static int
- get_spec_reg(regname, argp, allocated, errmsg)
- int regname;
- char_u **argp;
- int *allocated;
- int errmsg; /* give error message when failing */
- {
- *argp = NULL;
- *allocated = FALSE;
- switch (regname)
- {
- case '%': /* file name */
- if (errmsg)
- check_fname(); /* will give emsg if not set */
- *argp = curbuf->b_fname;
- return TRUE;
- case '#': /* alternate file name */
- *argp = getaltfname(errmsg); /* may give emsg if not set */
- return TRUE;
- #ifdef WANT_EVAL
- case '=': /* result of expression */
- *argp = get_expr_line();
- *allocated = TRUE;
- return TRUE;
- #endif
- case ':': /* last command line */
- if (last_cmdline == NULL && errmsg)
- EMSG(e_nolastcmd);
- *argp = last_cmdline;
- return TRUE;
- case '.': /* last inserted text */
- *argp = get_last_insert_save();
- *allocated = TRUE;
- if (*argp == NULL && errmsg)
- EMSG(e_noinstext);
- return TRUE;
- case '_': /* black hole: always empty */
- *argp = (char_u *)"";
- return TRUE;
- }
- return FALSE;
- }
- /*
- * paste a yank register into the command line.
- * used by CTRL-R command in command-line mode
- * insert_reg() 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(regname)
- int regname;
- {
- long i;
- char_u *arg;
- int allocated;
- if (!valid_yank_reg(regname, FALSE)) /* check for valid regname */
- return FAIL;
- #ifdef USE_CLIPBOARD
- if (regname == '*')
- clip_get_selection();
- #endif
- if (regname == '.') /* insert last inserted text */
- return FAIL; /* Unimplemented */
- if (get_spec_reg(regname, &arg, &allocated, TRUE))
- {
- if (arg == NULL)
- return FAIL;
- i = put_on_cmdline(arg, -1, TRUE);
- if (allocated)
- vim_free(arg);
- return (int)i;
- }
- get_yank_register(regname, 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;
- }
- /*
- * op_delete - handle a delete operation
- *
- * return FAIL if undo failed, OK otherwise.
- */
- int
- op_delete(oap)
- OPARG *oap;
- {
- 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 OK;
- /* Nothing to delete, return here. Do prepare undo, for op_change(). */
- if (oap->empty)
- {
- return u_save_cursor();
- }
- #ifdef MULTI_BYTE
- if (is_dbcs)
- {
- char_u *p;
- if (oap->end.col >= oap->start.col)
- {
- p = ml_get(oap->end.lnum);
- if (IsTrailByte(p, p + oap->end.col + oap->inclusive))
- oap->end.col++;
- }
- else
- {
- p = ml_get(oap->start.lnum);
- if (IsTrailByte(p, p + oap->start.col + oap->inclusive))
- oap->start.col++;
- }
- }
- #endif
- /*
- * Imitate the strange Vi behaviour: If the delete spans more than one line
- * and motion_type == MCHAR and the result is a blank line, make the delete
- * linewise. Don't do this for the change command or Visual mode.
- */
- if ( oap->motion_type == MCHAR
- && !oap->is_VIsual
- && oap->line_count > 1
- && oap->op_type == OP_DELETE)
- {
- ptr = ml_get(oap->end.lnum) + oap->end.col + oap->inclusive;
- ptr = skipwhite(ptr);
- if (*ptr == NUL && inindent(0))
- oap->motion_type = MLINE;
- }
- /*
- * Check for trying to delete (e.g. "D") in an empty line.
- * Note: For the change operator it is ok.
- */
- if ( oap->motion_type == MCHAR
- && oap->line_count == 1
- && oap->op_type == OP_DELETE
- && *ml_get(oap->start.lnum) == NUL)
- {
- /*
- * It's an error to operate on an empty region, when 'E' inclucded in
- * 'cpoptions' (Vi compatible).
- */
- if (vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL)
- beep_flush();
- return OK;
- }
- /*
- * Do a yank of whatever we're about to delete.
- * If a yank register was specified, put the deleted text into that register.
- * For the black hole register '_' don't yank anything.
- */
- if (oap->regname != '_')
- {
- if (oap->regname != 0)
- {
- /* check for read-only register */
- if (!valid_yank_reg(oap->regname, TRUE))
- {
- beep_flush();
- return OK;
- }
- get_yank_register(oap->regname, TRUE); /* yank into specif'd reg. */
- if (op_yank(oap, TRUE, FALSE) == OK) /* yank without message */
- did_yank = TRUE;
- }
- /*
- * Put deleted text into register 1 and shift number registers if the
- * delete contains a line break, or when a regname has been specified!
- */
- if (oap->regname != 0 || oap->motion_type == MLINE
- || oap->line_count > 1)
- {
- y_current = &y_regs[9];
- free_yank_all(); /* free register nine */
- for (n = 9; n > 1; --n)
- y_regs[n] = y_regs[n - 1];
- y_previous = y_current = &y_regs[1];
- y_regs[1].y_array = NULL; /* set register one to empty */
- oap->regname = 0;
- }
- else if (oap->regname == 0) /* yank into unnamed register */
- {
- oap->regname = '-'; /* use special delete register */
- get_yank_register(oap->regname, TRUE);
- oap->regname = 0;
- }
- if (oap->regname == 0 && op_yank(oap, TRUE, FALSE) == OK)
- did_yank = TRUE;
- /*
- * If there's too much stuff to fit in the yank register, 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 FAIL;
- }
- }
- }
- /*
- * block mode delete
- */
- if (oap->block_mode)
- {
- if (u_save((linenr_t)(oap->start.lnum - 1),
- (linenr_t)(oap->end.lnum + 1)) == FAIL)
- return FAIL;
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with this line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- for (lnum = curwin->w_cursor.lnum;
- curwin->w_cursor.lnum <= oap->end.lnum;
- ++curwin->w_cursor.lnum)
- {
- block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE);
- if (bd.textlen == 0) /* nothing to delete */
- continue;
- /* n == number of chars deleted
- * 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;
- oldp = ml_get_curline();
- newp = alloc_check((unsigned)STRLEN(oldp) + 1 - n);
- if (newp == NULL)
- continue;
- /* copy up to deleted part */
- mch_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;
- mch_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;
- changed_cline_bef_curs(); /* recompute cursor pos. on screen */
- approximate_botline(); /* w_botline may be wrong now */
- adjust_cursor();
- changed();
- update_screen(VALID_TO_CURSCHAR);
- oap->line_count = 0; /* no lines deleted */
- }
- else if (oap->motion_type == MLINE)
- {
- if (oap->op_type == OP_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 (oap->line_count > 1)
- {
- lnum = curwin->w_cursor.lnum;
- ++curwin->w_cursor.lnum;
- del_lines((long)(oap->line_count - 1), TRUE, TRUE);
- curwin->w_cursor.lnum = lnum;
- }
- if (u_save_cursor() == FAIL)
- return FAIL;
- if (curbuf->b_p_ai) /* don't delete indent */
- {
- beginline(BL_WHITE); /* cursor on first non-white */
- did_ai = TRUE; /* delete the indent when ESC hit */
- }
- else
- beginline(0); /* cursor in column 0 */
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- truncate_line(FALSE); /* delete the rest of the line */
- /* leave cursor past last char in line */
- }
- else
- {
- del_lines(oap->line_count, TRUE, TRUE);
- beginline(BL_WHITE | BL_FIX);
- }
- u_clearline(); /* "U" command should not be possible after "dd" */
- }
- else if (oap->line_count == 1) /* delete characters within one line */
- {
- if (u_save_cursor() == FAIL)
- return FAIL;
- /* if 'cpoptions' contains '$', display '$' at end of change */
- if ( vim_strchr(p_cpo, CPO_DOLLAR) != NULL
- && oap->op_type == OP_CHANGE
- && oap->end.lnum == curwin->w_cursor.lnum
- && !oap->is_VIsual)
- display_dollar(oap->end.col - !oap->inclusive);
- n = oap->end.col - oap->start.col + 1 - !oap->inclusive;
- (void)del_chars((long)n, restart_edit == NUL);
- }
- else /* delete characters between lines */
- {
- if (u_save_cursor() == FAIL) /* save first line for undo */
- return FAIL;
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- truncate_line(TRUE); /* delete from cursor to end of line */
- oap->start = curwin->w_cursor; /* remember curwin->w_cursor */
- ++curwin->w_cursor.lnum;
- /* includes save for undo */
- del_lines((long)(oap->line_count - 2), TRUE, TRUE);
- if (u_save_cursor() == FAIL) /* save last line for undo */
- return FAIL;
- /* delete from start of line until op_end */
- curwin->w_cursor.col = 0;
- (void)del_chars((long)(oap->end.col + 1 - !oap->inclusive),
- restart_edit == NUL);
- curwin->w_cursor = oap->start; /* restore curwin->w_cursor */
- (void)do_join(FALSE, TRUE);
- }
- /*
- * For a change within one line, the screen is updated differently (to
- * take care of 'dollar').
- */
- if (oap->motion_type == MCHAR && oap->line_count == 1)
- {
- if (dollar_vcol)
- must_redraw = 0; /* don't want a redraw now */
- else
- update_screenline();
- }
- else if (!global_busy) /* no need to update screen for :global */
- {
- update_topline();
- update_screen(NOT_VALID);
- }
- msgmore(curbuf->b_ml.ml_line_count - old_lcount);
- /*
- * Set "'[" and "']" marks.
- */
- curbuf->b_op_start = oap->start;
- if (oap->block_mode)
- {
- curbuf->b_op_end.lnum = oap->end.lnum;
- curbuf->b_op_end.col = oap->start.col;
- }
- else
- curbuf->b_op_end = oap->start;
- return OK;
- }
- /*
- * op_tilde - handle the (non-standard vi) tilde operator
- */
- void
- op_tilde(oap)
- OPARG *oap;
- {
- FPOS pos;
- struct block_def bd;
- if (u_save((linenr_t)(oap->start.lnum - 1),
- (linenr_t)(oap->end.lnum + 1)) == FAIL)
- return;
- /*
- * Set '[ and '] marks.
- */
- curbuf->b_op_start = oap->start;
- curbuf->b_op_end = oap->end;
- pos = oap->start;
- if (oap->block_mode) /* Visual block mode */
- {
- for (; pos.lnum <= oap->end.lnum; ++pos.lnum)
- {
- block_prep(oap, &bd, pos.lnum, FALSE);
- pos.col = bd.textcol;
- while (--bd.textlen >= 0)
- {
- swapchar(oap->op_type, &pos);
- if (inc(&pos) == -1) /* at end of file */
- break;
- }
- }
- }
- else /* not block mode */
- {
- if (oap->motion_type == MLINE)
- {
- pos.col = 0;
- oap->end.col = STRLEN(ml_get(oap->end.lnum));
- if (oap->end.col)
- --oap->end.col;
- }
- else if (!oap->inclusive)
- dec(&(oap->end));
- while (ltoreq(pos, oap->end))
- {
- swapchar(oap->op_type, &pos);
- if (inc(&pos) == -1) /* at end of file */
- break;
- }
- }
- if (oap->motion_type == MCHAR && oap->line_count == 1 && !oap->block_mode)
- update_screenline();
- else
- {
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(oap->start.lnum);
- #endif
- update_topline();
- update_screen(NOT_VALID);
- }
- if (oap->line_count > p_report)
- smsg((char_u *)"%ld line%s ~ed",
- oap->line_count, plural(oap->line_count));
- }
- /*
- * If op_type == OP_UPPER: make uppercase,
- * if op_type == OP_LOWER: make lowercase,
- * else swap case of character at 'pos'
- */
- void
- swapchar(op_type, pos)
- int op_type;
- FPOS *pos;
- {
- int c;
- c = gchar(pos);
- if (islower(c) && op_type != OP_LOWER)
- {
- pchar(*pos, TO_UPPER(c));
- changed();
- }
- else if (isupper(c) && op_type != OP_UPPER)
- {
- pchar(*pos, TO_LOWER(c));
- changed();
- }
- }
- /*
- * op_change - handle a change operation
- *
- * return TRUE if edit() returns because of a CTRL-O command
- */
- int
- op_change(oap)
- OPARG *oap;
- {
- colnr_t l;
- l = oap->start.col;
- if (oap->motion_type == MLINE)
- {
- l = 0;
- #ifdef SMARTINDENT
- if (curbuf->b_p_si)
- can_si = TRUE; /* It's like opening a new line, do si */
- #endif
- }
- /* First delete the text in the region. In an empty buffer only need to
- * save for undo */
- if (curbuf->b_ml.ml_flags & ML_EMPTY)
- {
- if (u_save_cursor() == FAIL)
- return FALSE;
- }
- else if (op_delete(oap) == FAIL)
- return FALSE;
- if ((l > curwin->w_cursor.col) && !lineempty(curwin->w_cursor.lnum))
- inc_cursor();
- #if defined(LISPINDENT) || defined(CINDENT)
- if (oap->motion_type == MLINE)
- {
- # ifdef LISPINDENT
- if (curbuf->b_p_lisp && curbuf->b_p_ai)
- fixthisline(get_lisp_indent);
- # endif
- # if defined(LISPINDENT) && defined(CINDENT)
- else
- # endif
- # ifdef CINDENT
- if (curbuf->b_p_cin)
- fixthisline(get_c_indent);
- # endif
- }
- #endif
- return edit(NUL, FALSE, (linenr_t)1);
- }
- /*
- * set all the yank registers to empty (called from main())
- */
- void
- init_yank()
- {
- int i;
- for (i = 0; i < NUM_REGISTERS; ++i)
- y_regs[i].y_array = NULL;
- }
- /*
- * Free "n" lines from the current yank register.
- * Called for normal freeing and in case of error.
- */
- static void
- free_yank(n)
- long n;
- {
- if (y_current->y_array != NULL)
- {
- 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 register.
- * If we are to append (uppercase register), we first yank into a new yank
- * register 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
- op_yank(oap, deleting, mess)
- OPARG *oap;
- int deleting;
- int mess;
- {
- long y_idx; /* index in y_array[] */
- struct yankreg *curr; /* copy of y_current */
- struct yankreg newreg; /* new yank register when appending */
- char_u **new_ptr;
- linenr_t lnum; /* current line number */
- long j;
- long len;
- int yanktype = oap->motion_type;
- long yanklines = oap->line_count;
- linenr_t yankendlnum = oap->end.lnum;
- char_u *p;
- char_u *pnew;
- struct block_def bd;
- /* check for read-only register */
- if (oap->regname != 0 && !valid_yank_reg(oap->regname, TRUE))
- {
- beep_flush();
- return FAIL;
- }
- if (oap->regname == '_') /* black hole: nothing to do */
- return OK;
- if (!deleting) /* op_delete() already set y_current */
- get_yank_register(oap->regname, TRUE);
- curr = y_current;
- /* append to existing contents */
- if (y_append && y_current->y_array != NULL)
- y_current = &newreg;
- 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 ( oap->motion_type == MCHAR
- && oap->start.col == 0
- && !oap->inclusive
- && (!oap->is_VIsual || *p_sel == 'o')
- && oap->end.col == 0
- && yanklines > 1)
- {
- yanktype = MLINE;
- --yankendlnum;
- --yanklines;
- }
- y_current->y_size = yanklines;
- y_current->y_type = yanktype; /* set the yank register type */
- y_current->y_array = (char_u **)lalloc_clear((long_u)(sizeof(char_u *) *
- yanklines), TRUE);
- if (y_current->y_array == NULL)
- {
- y_current = curr;
- return FAIL;
- }
- y_idx = 0;
- lnum = oap->start.lnum;
- /*
- * Visual block mode
- */
- if (oap->block_mode)
- {
- y_current->y_type = MBLOCK; /* set the yank register type */
- for ( ; lnum <= yankendlnum; ++lnum)
- {
- block_prep(oap, &bd, lnum, FALSE);
- if ((pnew = alloc(bd.startspaces + bd.endspaces +
- bd.textlen + 1)) == NULL)
- goto fail;
- y_current->y_array[y_idx++] = pnew;
- copy_spaces(pnew, (size_t)bd.startspaces);
- pnew += bd.startspaces;
- mch_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 = oap->end.col - oap->start.col + 1 - !oap->inclusive;
- /* Watch out for very big endcol (MAXCOL) */
- p = ml_get(lnum) + oap->start.col;
- len = STRLEN(p);
- if (j > len || j < 0)
- j = len;
- if ((y_current->y_array[0] = vim_strnsave(p, (int)j)) == NULL)
- {
- fail:
- free_yank(y_idx); /* free the allocated lines */
- y_current = curr;
- return FAIL;
- }
- goto success;
- }
- if ((y_current->y_array[0] =
- vim_strsave(ml_get(lnum++) + oap->start.col)) == NULL)
- goto fail;
- ++y_idx;
- }
- while (yanktype == MLINE ? (lnum <= yankendlnum) : (lnum < yankendlnum))
- {
- if ((y_current->y_array[y_idx] =
- vim_strsave(ml_get(lnum++))) == NULL)
- goto fail;
- ++y_idx;
- }
- if (yanktype != MLINE)
- {
- if ((y_current->y_array[y_idx] = vim_strnsave(ml_get(yankendlnum),
- oap->end.col + 1 - !oap->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)
- {
- y_idx = 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;
- y_idx = 1;
- }
- else
- y_idx = 0;
- while (y_idx < y_current->y_size)
- curr->y_array[j++] = y_current->y_array[y_idx++];
- curr->y_size = j;
- vim_free(y_current->y_array);
- y_current = curr;
- }
- if (mess) /* Display message about yank? */
- {
- if (yanktype == MCHAR && !oap->block_mode && yanklines == 1)
- yanklines = 0;
- /* Some versions of Vi use ">=" here, some don't... */
- if (yanklines > p_report)
- {
- /* redisplay now, so message is not deleted */
- update_topline_redraw();
- smsg((char_u *)"%ld line%s yanked", yanklines, plural(yanklines));
- }
- }
- /*
- * Set "'[" and "']" marks.
- */
- curbuf->b_op_start = oap->start;
- curbuf->b_op_end = oap->end;
- #ifdef USE_CLIPBOARD
- /*
- * If we were yanking to the clipboard register, send result to clipboard.
- */
- if (curr == &(y_regs[CLIPBOARD_REGISTER]))
- {
- clip_own_selection();
- clip_mch_set_selection();
- }
- #endif
- return OK;
- }
- /*
- * put contents of register "regname" into the text
- * For ":put" command count == -1.
- * flags: PUT_FIXINDENT make indent look nice
- * PUT_CURSEND leave cursor after end of new text
- */
- void
- do_put(regname, dir, count, flags)
- int regname;
- int dir; /* BACKWARD for 'P', FORWARD for 'p' */
- long count;
- int flags;
- {
- 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 = NULL;
- 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;
- int allocated = FALSE;
- #ifdef MULTI_BYTE
- int bMultiByteCode = 0;
- #endif
- #ifdef USE_CLIPBOARD
- if (regname == '*')
- clip_get_selection();
- #endif
- if (flags & PUT_FIXINDENT)
- orig_indent = get_indent();
- curbuf->b_op_start = curwin->w_cursor; /* default for '[ mark */
- if (dir == FORWARD)
- {
- #ifdef MULTI_BYTE
- /* put it on the next of the multi-byte character. */
- if (is_dbcs)
- {
- ptr = ml_get(curwin->w_cursor.lnum) + curwin->w_cursor.col;
- if (IsLeadByte(*ptr) && (*(ptr + 1) != ' '))
- {
- bMultiByteCode = 1;
- curbuf->b_op_start.col++;
- }
- }
- #endif
- curbuf->b_op_start.col++;
- }
- curbuf->b_op_end = curwin->w_cursor; /* default for '] mark */
- /*
- * Using inserted text works differently, because the register includes
- * special characters (newlines, etc.).
- */
- if (regname == '.')
- {
- (void)stuff_inserted((dir == FORWARD ? (count == -1 ? 'o' : 'a') :
- (count == -1 ? 'O' : 'i')), count, FALSE);
- /* Putting the text is done later, so can't really move the cursor to
- * the nex character. Use "l" to simulate it. */
- if ((flags & PUT_CURSEND) && gchar_cursor() != NUL)
- stuffcharReadbuff('l');
- return;
- }
- /*
- * For special registers '%' (file name), '#' (alternate file name) and
- * ':' (last command line), etc. we have to create a fake yank register.
- */
- if (get_spec_reg(regname, &insert_string, &allocated, TRUE))
- {
- if (insert_string == NULL)
- return;
- }
- if (insert_string != NULL)
- {
- y_type = MCHAR;
- if (regname == '=')
- {
- /* For the = register we need to split the string at NL
- * characters. */
- /* Loop twice: count the number of lines and save them. */
- for (;;)
- {
- y_size = 0;
- ptr = insert_string;
- while (ptr != NULL)
- {
- if (y_array != NULL)
- y_array[y_size] = ptr;
- ++y_size;
- ptr = vim_strchr(ptr, 'n');
- if (ptr != NULL)
- {
- if (y_array != NULL)
- *ptr = NUL;
- ++ptr;
- /* A trailing 'n' makes the string linewise */
- if (*ptr == NUL)
- {
- y_type = MLINE;
- break;
- }
- }
- }
- if (y_array != NULL)
- break;
- y_array = (char_u **)alloc((unsigned)
- (y_size * sizeof(char_u *)));
- if (y_array == NULL)
- goto end;
- }
- }
- else
- {
- y_size = 1; /* use fake one-line yank register */
- y_array = &insert_string;
- }
- }
- else
- {
- get_yank_register(regname, 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",
- regname == 0 ? (char_u *)""" : transchar(regname));
- goto end;
- }
- 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)
- goto end;
- }
- else if (u_save_cursor() == FAIL)
- goto end;
- yanklen = STRLEN(y_array[0]);
- changed();
- lnum = curwin->w_cursor.lnum;
- col = curwin->w_cursor.col;
- approximate_botline(); /* w_botline might not be valid now */
- changed_cline_bef_curs(); /* cursor posn on screen may change */
- /*
- * block mode
- */
- if (y_type == MBLOCK)
- {
- if (dir == FORWARD && gchar_cursor() != NUL)
- {
- getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
- #ifdef MULTI_BYTE
- if (is_dbcs)
- {
- /* put it on the next of the multi-byte character. */
- col += bMultiByteCode + 1;
- curwin->w_cursor.col += bMultiByteCode + 1;
- }
- else
- #endif
- {
- ++col;
- ++curwin->w_cursor.col;
- }
- }
- else
- getvcol(curwin, &curwin->w_cursor, &col, NULL, NULL);
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- 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;
- mch_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)
- {
- mch_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. */
- mch_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;
- }
- /* adjust '] mark */
- curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1;
- curbuf->b_op_end.col = bd.textcol + totlen - 1;
- if (flags & PUT_CURSEND)
- {
- curwin->w_cursor = curbuf->b_op_end;
- curwin->w_cursor.col++;
- }
- else
- curwin->w_cursor.lnum = lnum;
- update_topline();
- if (flags & PUT_CURSEND)
- update_screen(NOT_VALID);
- else
- update_screen(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)
- {
- #ifdef MULTI_BYTE
- if (is_dbcs)
- {
- /* put it on the next of the multi-byte character. */
- col += bMultiByteCode + 1;
- if (yanklen)
- {
- curwin->w_cursor.col += bMultiByteCode + 1;
- curbuf->b_op_end.col += bMultiByteCode + 1;
- }
- }
- else
- #endif
- {
- ++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)
- goto end; /* alloc() will give error message */
- mch_memmove(newp, oldp, (size_t)col);
- ptr = newp + col;
- for (i = 0; i < count; ++i)
- {
- mch_memmove(ptr, y_array[0], (size_t)yanklen);
- ptr += yanklen;
- }
- mch_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;
- /* For "CTRL-O p" in Insert mode, put cursor after last char */
- if (totlen && (restart_edit || (flags & PUT_CURSEND)))
- ++curwin->w_cursor.col;
- update_screenline();
- }
- else
- {
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(lnum);
- #endif
- 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 */
- mch_memmove(newp, oldp, (size_t)col);
- /* append to first line */
- mch_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 (flags & PUT_FIXINDENT)
- {
- 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 '] mark 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 (flags & PUT_CURSEND)
- {
- /* put cursor after inserted text */
- if (y_type == MLINE)
- {
- if (lnum >= curbuf->b_ml.ml_line_count)
- curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
- else
- curwin->w_cursor.lnum = lnum + 1;
- curwin->w_cursor.col = 0;
- }
- else
- {
- curwin->w_cursor.lnum = lnum;
- curwin->w_cursor.col = col;
- }
- /* the text before the cursor needs redrawing */
- redraw_curbuf_later(NOT_VALID);
- }
- else if (y_type == MLINE)
- {
- /* put cursor onfirst non-blank in first inserted line */
- curwin->w_cursor.col = 0;
- if (dir == FORWARD)
- ++curwin->w_cursor.lnum;
- beginline(BL_WHITE | BL_FIX);
- }
- else /* put cursor on first inserted character */
- curwin->w_cursor = new_cursor;
- error:
- if (y_type == MLINE) /* adjust '[ mark */
- {
- curbuf->b_op_start.col = 0;
- if (dir == FORWARD)
- curbuf->b_op_start.lnum++;
- }
- mark_adjust(curbuf->b_op_start.lnum + (y_type == MCHAR),
- (linenr_t)MAXLNUM, nr_lines, 0L);
- update_topline();
- update_screen(VALID_TO_CURSCHAR);
- }
- }
- msgmore(nr_lines);
- curwin->w_set_curswant = TRUE;
- end:
- if (allocated)
- {
- vim_free(insert_string);
- if (regname == '=')
- vim_free(y_array);
- }
- if ((flags & PUT_CURSEND) && gchar_cursor() == NUL && curwin->w_cursor.col
- && !(restart_edit || (State & INSERT)))
- --curwin->w_cursor.col;
- }
- /* 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_CLIPBOARD
- else if (num == CLIPBOARD_REGISTER)
- return '*';
- #endif
- else
- return num + 'a' - 10;
- }
- /*
- * display the contents of the yank registers
- */
- void
- do_dis(arg)
- char_u *arg;
- {
- int i, n;
- long j;
- char_u *p;
- struct yankreg *yb;
- char_u name;
- int attr;
- if (arg != NULL && *arg == NUL)
- arg = NULL;
- attr = hl_attr(HLF_8);
- /* Highlight title */
- MSG_PUTS_TITLE("n--- Registers ---");
- for (i = -1; i < NUM_REGISTERS; ++i)
- {
- if (i == -1)
- {
- if (y_previous != NULL)
- yb = y_previous;
- else
- yb = &(y_regs[0]);
- }
- else
- yb = &(y_regs[i]);
- name = get_register_name(i);
- if (yb->y_array != NULL && (arg == NULL ||
- vim_strchr(arg, name) != NULL))
- {
- msg_putchar('n');
- msg_putchar('"');
- msg_putchar(name);
- MSG_PUTS(" ");
- n = (int)Columns - 6;
- for (j = 0; j < yb->y_size && n > 1; ++j)
- {
- if (j)
- {
- MSG_PUTS_ATTR("^J", attr);
- 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_PUTS_ATTR("^J", attr);
- out_flush(); /* show one line at a time */
- }
- }
- /*
- * display last inserted text
- */
- if ((p = get_last_insert()) != NULL &&
- (arg == NULL || vim_strchr(arg, '.') != NULL))
- {
- MSG_PUTS("n". ");
- dis_msg(p, TRUE);
- }
- /*
- * display last command line
- */
- if (last_cmdline != NULL && (arg == NULL || vim_strchr(arg, ':') != NULL))
- {
- MSG_PUTS("n": ");
- dis_msg(last_cmdline, FALSE);
- }
- /*
- * display current file name
- */
- if (curbuf->b_fname != NULL &&
- (arg == NULL || vim_strchr(arg, '%') != NULL))
- {
- MSG_PUTS("n"% ");
- dis_msg(curbuf->b_fname, FALSE);
- }
- /*
- * display alternate file name
- */
- if (arg == NULL || vim_strchr(arg, '%') != NULL)
- {
- char_u *fname;
- linenr_t dummy;
- if (buflist_name_nr(0, &fname, &dummy) != FAIL)
- {
- MSG_PUTS("n"# ");
- dis_msg(fname, FALSE);
- }
- }
- #ifdef WANT_EVAL
- /*
- * display last used expression
- */
- if (expr_line != NULL && (arg == NULL || vim_strchr(arg, '=') != NULL))
- {
- MSG_PUTS("n"= ");
- dis_msg(expr_line, FALSE);
- }
- #endif
- }
- /*
- * 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_wcol 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;
- }
- }
- redraw_later(VALID_TO_CURSCHAR);
- /*
- * Need to update the screen if the line where the cursor is became too
- * long to fit on the screen.
- */
- update_topline_redraw();
- }
- /*
- * Join two lines at the cursor position.
- * "redraw" is TRUE when the screen should be updated.
- *
- * return FAIL for failure, OK ohterwise
- */
- int
- do_join(insert_space, redraw)
- int insert_space;
- int redraw;
- {
- 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)
- {
- /*
- * Check if we can really redraw: w_cline_row and w_cline_height need
- * to be valid. Try to make them valid by calling may_validate_crow()
- */
- if (may_validate_crow() == OK)
- rows_to_del = plines_m(curwin->w_cursor.lnum,
- curwin->w_cursor.lnum + 1);
- else
- redraw = FALSE;
- }
- 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);
- if (*next != ')' && currsize != 0 && endcurr1 != TAB)
- {
- /* don't add a space if the line is inding in a space */
- if (endcurr1 == ' ')
- endcurr1 = endcurr2;
- else
- ++spaces;
- /* extra space when 'joinspaces' set and line ends in '.' */
- if ( p_js
- && (endcurr1 == '.'
- || (vim_strchr(p_cpo, CPO_JOINSP) == NULL
- && (endcurr1 == '?' || endcurr1 == '!'))))
- ++spaces;
- }
- }
- 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.
- */
- mch_memmove(newp + currsize + spaces, next, (size_t)(nextsize + 1));
- curr = ml_get_curline();
- mch_memmove(newp, curr, (size_t)currsize);
- copy_spaces(newp + currsize, (size_t)spaces);
- ml_replace(curwin->w_cursor.lnum, newp, FALSE);
- #ifdef SYNTAX_HL
- /* recompute syntax hl. for current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- /*
- * Delete the following line. To do this we move the cursor there
- * briefly, and then move it back. After del_lines() 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;
- del_lines(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 = vim_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 'gq'
- */
- void
- op_format(oap)
- OPARG *oap;
- {
- long old_line_count = curbuf->b_ml.ml_line_count;
- int is_not_par; /* current line not part of parag. */
- int next_is_not_par; /* next line not part of paragraph */
- int is_end_par; /* at end of paragraph */
- int prev_is_end_par = FALSE;/* prev. line not part of parag. */
- int leader_len = 0; /* leader len of current line */
- int next_leader_len; /* leader len of next line */
- char_u *leader_flags = NULL; /* flags for leader of current line */
- char_u *next_leader_flags; /* flags for leader of next line */
- int advance = TRUE;
- int second_indent = -1;
- int do_second_indent;
- int first_par_line = TRUE;
- int smd_save;
- long count;
- int need_set_indent = TRUE; /* set indent of next paragraph */
- int force_format = FALSE;
- int max_len;
- int screenlines = -1;
- if (u_save((linenr_t)(oap->start.lnum - 1),
- (linenr_t)(oap->end.lnum + 1)) == FAIL)
- return;
- /* When formatting less than a screenfull, will try to speed up redrawing
- * by inserting/deleting screen lines */
- if (oap->end.lnum - oap->start.lnum < Rows)
- screenlines = plines_m(oap->start.lnum, oap->end.lnum);
- /* length of a line to force formatting: 3 * 'tw' */
- max_len = comp_textwidth(TRUE) * 3;
- /* Set '[ mark at the start of the formatted area */
- curbuf->b_op_start = oap->start;
- /* 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_not_par = fmt_check_par(curwin->w_cursor.lnum - 1,
- &leader_len, &leader_flags);
- else
- is_not_par = TRUE;
- next_is_not_par = fmt_check_par(curwin->w_cursor.lnum,
- &next_leader_len, &next_leader_flags);
- is_end_par = (is_not_par || next_is_not_par);
- curwin->w_cursor.lnum--;
- for (count = oap->line_count; count > 0 && !got_int; --count)
- {
- /*
- * Advance to next paragraph.
- */
- if (advance)
- {
- curwin->w_cursor.lnum++;
- prev_is_end_par = is_end_par;
- is_not_par = next_is_not_par;
- leader_len = next_leader_len;
- leader_flags = next_leader_flags;
- }
- /*
- * The last line to be formatted.
- */
- if (count == 1)
- {
- next_is_not_par = TRUE;
- next_leader_len = 0;
- next_leader_flags = NULL;
- }
- else
- next_is_not_par = fmt_check_par(curwin->w_cursor.lnum + 1,
- &next_leader_len, &next_leader_flags);
- advance = TRUE;
- is_end_par = (is_not_par || next_is_not_par);
- /*
- * Skip lines that are not in a paragraph.
- */
- if (!is_not_par)
- {
- /*
- * 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_end_par
- && 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);
- /*
- * When the comment leader changes, it's the end of the paragraph.
- */
- if (curwin->w_cursor.lnum >= curbuf->b_ml.ml_line_count
- || !same_leader(leader_len, leader_flags,
- next_leader_len, next_leader_flags))
- is_end_par = TRUE;
- /*
- * If we have got to the end of a paragraph, or the line is
- * getting long, format it.
- */
- if (is_end_par || force_format)
- {
- if (need_set_indent)
- /* 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();
- #ifdef SYNTAX_HL
- /* recompute syntax hl., starting with current line */
- syn_changed(curwin->w_cursor.lnum);
- #endif
- /* do the formatting, without 'showmode' */
- State = INSERT; /* for open_line() */
- smd_save = p_smd;
- p_smd = FALSE;
- insertchar(NUL, TRUE, second_indent, FALSE);
- State = NORMAL;
- p_smd = smd_save;
- second_indent = -1;
- /* at end of par.: need to set indent of next par. */
- need_set_indent = is_end_par;
- if (is_end_par)
- first_par_line = TRUE;
- force_format = FALSE;
- }
- /*
- * When still in same paragraph, join the lines together. But
- * first delete the comment leader from the second line.
- */
- if (!is_end_par)
- {
- advance = FALSE;
- curwin->w_cursor.lnum++;
- curwin->w_cursor.col = 0;
- (void)del_chars((long)next_leader_len, FALSE);
- curwin->w_cursor.lnum--;
- if (do_join(TRUE, FALSE) == FAIL)
- {
- beep_flush();
- break;
- }
- first_par_line = FALSE;
- /* If the line is getting long, format it next time */
- if (STRLEN(ml_get_curline()) > (size_t)max_len)
- force_format = TRUE;
- else
- force_format = FALSE;
- }
- }
- line_breakcheck();
- }
- fo_do_comments = FALSE;
- /*
- * Try to correct the number of lines on the screen, to speed up
- * displaying.
- */
- if (screenlines > 0)
- {
- screenlines -= plines_m(oap->start.lnum, curwin->w_cursor.lnum);
- if (screenlines > 0)
- win_del_lines(curwin, curwin->w_cline_row, screenlines,
- FALSE, TRUE);
- else if (screenlines < 0)
- win_ins_lines(curwin, curwin->w_cline_row, screenlines,
- FALSE, TRUE);
- }
- /*
- * Leave the cursor at the first non-blank of the last formatted line.
- * If the cursor was moved one line back (e.g. with "Q}") go to the next
- * line, so "." will do the next lines.
- */
- if (oap->end_adjusted && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
- ++curwin->w_cursor.lnum;
- beginline(BL_WHITE | BL_FIX);
- update_screen(NOT_VALID);
- msgmore(curbuf->b_ml.ml_line_count - old_line_count);
- /* put '] mark on the end of the formatted area */
- curbuf->b_op_end = curwin->w_cursor;
- }
- /*
- * 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_check_par(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(oap, bd, lnum, is_del)
- OPARG *oap;
- 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 < oap->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 < oap->start_vcol) /* line too short */
- {
- if (!is_del)
- bd->endspaces = oap->end_vcol - oap->start_vcol + 1;
- }
- else /* vcol >= oap->start_vcol */
- {
- bd->startspaces = vcol - oap->start_vcol;
- if (is_del && vcol > oap->start_vcol)
- bd->startspaces = incr - bd->startspaces;
- pend = pstart;
- if (vcol > oap->end_vcol) /* it's all in one character */
- {
- bd->startspaces = oap->end_vcol - oap->start_vcol + 1;
- if (is_del)
- bd->startspaces = incr - bd->startspaces;
- }
- else
- {
- while (vcol <= oap->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 < oap->end_vcol && !is_del) /* line too short */
- {
- bd->endspaces = oap->end_vcol - vcol;
- }
- else if (vcol > oap->end_vcol)
- {
- bd->endspaces = vcol - oap->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;
- }
- #ifdef RIGHTLEFT
- static void reverse_line __ARGS((char_u *s));
- static void
- reverse_line(s)
- char_u *s;
- {
- int i, j;
- char_u c;
- if ((i = STRLEN(s) - 1) <= 0)
- return;
- curwin->w_cursor.col = i - curwin->w_cursor.col;
- for (j = 0; j < i; j++, i--)
- {
- c = s[i]; s[i] = s[j]; s[j] = c;
- }
- }
- # define RLADDSUBFIX() if (curwin->w_p_rl) reverse_line(ptr);
- #else
- # define RLADDSUBFIX()
- #endif
- /*
- * 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;
- {
- int col;
- char_u buf1[NUMBUFLEN];
- char_u buf2[NUMBUFLEN];
- int hex; /* 'X' or 'x': hex; '0': octal */
- static int hexupper = FALSE; /* 0xABC */
- unsigned long n;
- unsigned long oldn;
- char_u *ptr;
- int c;
- int length = 0; /* character length of the number */
- int todel;
- int dohex;
- int dooct;
- int firstdigit;
- int negative;
- int subtract;
- dohex = (vim_strchr(curbuf->b_p_nf, 'x') != NULL);
- dooct = (vim_strchr(curbuf->b_p_nf, 'o') != NULL);
- ptr = ml_get_curline();
- RLADDSUBFIX();
- /*
- * First check if we are on a hexadecimal number, after the "0x".
- */
- col = curwin->w_cursor.col;
- if (dohex)
- while (col > 0 && isxdigit(ptr[col]))
- --col;
- if ( dohex
- && col > 0
- && (ptr[col] == 'X'
- || ptr[col] == 'x')
- && ptr[col - 1] == '0'
- && isxdigit(ptr[col + 1]))
- {
- /*
- * Found hexadecimal number, move to its start.
- */
- --col;
- }
- else
- {
- /*
- * Search forward and then backward to find the 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 a number was found, and saving for undo works, replace the number.
- */
- firstdigit = ptr[col];
- RLADDSUBFIX();
- if (!isdigit(firstdigit) || u_save_cursor() != OK)
- {
- beep_flush();
- return FAIL;
- }
- /* get ptr again, because u_save() may have changed it */
- ptr = ml_get_curline();
- RLADDSUBFIX();
- negative = FALSE;
- if (col > 0 && ptr[col - 1] == '-') /* negative number */
- {
- --col;
- negative = TRUE;
- }
- /* get the number value (unsigned) */
- vim_str2nr(ptr + col, &hex, &length, dooct, dohex, NULL, &n);
- /* ignore leading '-' for hex and octal numbers */
- if (hex && negative)
- {
- ++col;
- --length;
- negative = FALSE;
- }
- /* add or subtract */
- subtract = FALSE;
- if (command == Ctrl('X'))
- subtract ^= TRUE;
- if (negative)
- subtract ^= TRUE;
- oldn = n;
- if (subtract)
- n -= (unsigned long)Prenum1;
- else
- n += (unsigned long)Prenum1;
- /* handle wraparound for decimal numbers */
- if (!hex)
- {
- if (subtract)
- {
- if (n > oldn)
- {
- n = 1 + (n ^ (unsigned long)-1);
- negative ^= TRUE;
- }
- }
- else /* add */
- {
- if (n < oldn)
- {
- n = (n ^ (unsigned long)-1);
- negative ^= TRUE;
- }
- }
- if (n == 0)
- negative = FALSE;
- }
- /*
- * Delete the old number.
- */
- curwin->w_cursor.col = col;
- todel = length;
- c = gchar_cursor();
- /*
- * Don't include the '-' in the length, only the length of the part
- * after it is kept the same.
- */
- if (c == '-')
- --length;
- while (todel-- > 0)
- {
- if (isalpha(c))
- {
- if (isupper(c))
- hexupper = TRUE;
- else
- hexupper = FALSE;
- }
- (void)del_char(FALSE);
- c = gchar_cursor();
- }
- /*
- * Prepare the leading characters in buf1[].
- */
- ptr = buf1;
- if (negative)
- {
- *ptr++ = '-';
- }
- if (hex)
- {
- *ptr++ = '0';
- --length;
- }
- if (hex == 'x' || hex == 'X')
- {
- *ptr++ = hex;
- --length;
- }
- /*
- * Put the number characters in buf2[].
- */
- if (hex == 0)
- sprintf((char *)buf2, "%lu", n);
- else if (hex == '0')
- sprintf((char *)buf2, "%lo", n);
- else if (hex && hexupper)
- sprintf((char *)buf2, "%lX", n);
- else
- sprintf((char *)buf2, "%lx", n);
- length -= STRLEN(buf2);
- /*
- * adjust number of zeros to the new number of digits, so the
- * total length of the number remains the same
- */
- if (firstdigit == '0')
- while (length-- > 0)
- *ptr++ = '0';
- *ptr = NUL;
- STRCAT(buf1, buf2);
- ins_str(buf1); /* insert the new number */
- --curwin->w_cursor.col;
- curwin->w_set_curswant = TRUE;
- #ifdef RIGHTLEFT
- ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
- RLADDSUBFIX();
- #endif
- update_screenline();
- return OK;
- }
- #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;
- }
- get_yank_register(*str++, FALSE);
- 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 = vim_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_regs[i].y_array == NULL)
- continue;
- #ifdef USE_CLIPBOARD
- /* Skip '*' register, we don't want it back next time */
- if (i == CLIPBOARD_REGISTER)
- continue;
- #endif
- switch (y_regs[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_regs[i].y_type);
- emsg(IObuff);
- type = (char_u *)"LINE";
- break;
- }
- if (y_previous == &y_regs[i])
- fprintf(fp, """);
- if (i == DELETION_REGISTER)
- c = '-';
- else if (i < 10)
- c = '0' + i;
- else
- c = 'a' + i - 10;
- fprintf(fp, ""%ct%sn", c, type);
- num_lines = y_regs[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_regs[i].y_array[j]);
- }
- }
- }
- #endif /* VIMINFO */
- #if defined(USE_CLIPBOARD) || 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
- clip_free_selection()
- {
- struct yankreg *y_ptr = y_current;
- y_current = &y_regs[CLIPBOARD_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
- clip_get_selection()
- {
- struct yankreg *old_y_previous, *old_y_current;
- FPOS old_cursor, old_visual;
- int old_visual_mode;
- colnr_t old_curswant;
- int old_set_curswant;
- OPARG oa;
- CMDARG ca;
- if (clipboard.owned)
- {
- if (y_regs[CLIPBOARD_REGISTER].y_array != NULL)
- return;
- /* Get the text between clipboard.start & clipboard.end */
- old_y_previous = y_previous;
- old_y_current = y_current;
- old_cursor = curwin->w_cursor;
- old_curswant = curwin->w_curswant;
- old_set_curswant = curwin->w_set_curswant;
- old_visual = VIsual;
- old_visual_mode = VIsual_mode;
- clear_oparg(&oa);
- oa.regname = '*';
- oa.op_type = OP_YANK;
- vim_memset(&ca, 0, sizeof(ca));
- ca.oap = &oa;
- ca.cmdchar = 'y';
- ca.count1 = 1;
- do_pending_operator(&ca, NULL, NULL, 0, TRUE, TRUE);
- y_previous = old_y_previous;
- y_current = old_y_current;
- curwin->w_cursor = old_cursor;
- curwin->w_curswant = old_curswant;
- curwin->w_set_curswant = old_set_curswant;
- VIsual = old_visual;
- VIsual_mode = old_visual_mode;
- }
- else
- {
- clip_free_selection();
- /* Try to get selected text from another window */
- clip_mch_request_selection();
- }
- }
- /* Convert from the GUI selection string into the '*' register */
- void
- clip_yank_selection(type, str, len)
- int type;
- char_u *str;
- long len;
- {
- struct yankreg *y_ptr = &y_regs[CLIPBOARD_REGISTER]; /* '*' register */
- clip_free_selection();
- str_to_reg(y_ptr, type, str, len);
- }
- /*
- * Convert the '*' register into a GUI selection string returned in *str with
- * length *len.
- */
- int
- clip_convert_selection(str, len)
- char_u **str;
- long_u *len;
- {
- struct yankreg *y_ptr = &y_regs[CLIPBOARD_REGISTER]; /* '*' register */
- char_u *p;
- int lnum;
- int i, j;
- int_u eolsize;
- #ifdef USE_CRNL
- eolsize = 2;
- #else
- eolsize = 1;
- #endif
- *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]) + eolsize;
- /*
- * Don't want newline character at end of last line if we're in MCHAR mode.
- */
- if (y_ptr->y_type == MCHAR && *len > eolsize)
- *len -= eolsize;
- p = *str = lalloc(*len, TRUE);
- if (p == NULL)
- return -1;
- lnum = 0;
- for (i = 0, j = 0; i < (int)*len; i++, j++)
- {
- if (y_ptr->y_array[lnum][j] == 'n')
- p[i] = NUL;
- else if (y_ptr->y_array[lnum][j] == NUL)
- {
- #ifdef USE_CRNL
- p[i++] = 'r';
- #endif
- #ifdef USE_CR
- p[i] = 'r';
- #else
- p[i] = 'n';
- #endif
- lnum++;
- j = -1;
- }
- else
- p[i] = y_ptr->y_array[lnum][j];
- }
- return y_ptr->y_type;
- }
- #endif /* USE_CLIPBOARD || PROTO */
- #ifdef WANT_EVAL
- /*
- * Return the contents of a register as a single allocated string.
- * Used for "@r" in expressions.
- * Returns NULL for error.
- */
- char_u *
- get_reg_contents(regname)
- int regname;
- {
- long i;
- char_u *retval;
- int allocated;
- long len;
- /* Don't allow using an expression register inside an expression */
- if (regname == '=')
- return NULL;
- if (regname == '@') /* "@@" is used for unnamed register */
- regname = '"';
- /* check for valid regname */
- if (regname != NUL && !valid_yank_reg(regname, FALSE))
- return NULL;
- #ifdef USE_CLIPBOARD
- if (regname == '*')
- clip_get_selection(); /* may fill * register */
- #endif
- if (get_spec_reg(regname, &retval, &allocated, FALSE))
- {
- if (retval == NULL)
- return NULL;
- if (!allocated)
- retval = vim_strsave(retval);
- return retval;
- }
- get_yank_register(regname, FALSE);
- if (y_current->y_array == NULL)
- return NULL;
- /*
- * Compute length of resulting string.
- */
- len = 0;
- for (i = 0; i < y_current->y_size; ++i)
- {
- len += STRLEN(y_current->y_array[i]);
- /*
- * Insert a newline between lines and after last line if
- * y_type is MLINE.
- */
- if (y_current->y_type == MLINE || i < y_current->y_size - 1)
- ++len;
- }
- retval = lalloc(len + 1, TRUE);
- /*
- * Copy the lines of the yank register into the string.
- */
- if (retval != NULL)
- {
- len = 0;
- for (i = 0; i < y_current->y_size; ++i)
- {
- STRCPY(retval + len, y_current->y_array[i]);
- len += STRLEN(retval + len);
- /*
- * Insert a NL between lines and after the last line if y_type is
- * MLINE.
- */
- if (y_current->y_type == MLINE || i < y_current->y_size - 1)
- retval[len++] = 'n';
- }
- retval[len] = NUL;
- }
- return retval;
- }
- /*
- * Store string 'str' in register 'name'.
- * Careful: 'str' is modified, you may have to use a copy!
- * If 'str' ends in 'n' or 'r', use linewise, otherwise use characterwise.
- */
- void
- write_reg_contents(name, str)
- int name;
- char_u *str;
- {
- struct yankreg *old_y_previous, *old_y_current;
- long len;
- if (!valid_yank_reg(name, TRUE)) /* check for valid reg name */
- {
- EMSG2("Invalid register name: '%s'", transchar(name));
- return;
- }
- if (name == '_') /* black hole: nothing to do */
- return;
- /* Don't want to change the current (unnamed) register */
- old_y_previous = y_previous;
- old_y_current = y_current;
- get_yank_register(name, TRUE);
- if (!y_append)
- free_yank_all();
- len = STRLEN(str);
- str_to_reg(y_current,
- (len > 0 && (str[len - 1] == 'n' || str[len -1] == 'r'))
- ? MLINE : MCHAR, str, len);
- y_previous = old_y_previous;
- y_current = old_y_current;
- }
- #endif /* WANT_EVAL */
- #if defined(USE_CLIPBOARD) || defined(WANT_EVAL)
- /*
- * Put a string into a register. When the register is not empty, the string
- * is appended.
- */
- static void
- str_to_reg(y_ptr, type, str, len)
- struct yankreg *y_ptr; /* pointer to yank register */
- int type; /* MCHAR or MLINE */
- char_u *str; /* string to put in register */
- long len; /* lenght of string */
- {
- int lnum;
- long start;
- long i;
- int extra;
- int newlines; /* number of lines added */
- int extraline = 0; /* extra line at the end */
- int append = FALSE; /* append to last line in register */
- char_u *s;
- char_u **pp;
- if (y_ptr->y_array == NULL) /* NULL means emtpy register */
- y_ptr->y_size = 0;
- /*
- * Count the number of lines within the string
- */
- newlines = 0;
- for (i = 0; i < len; i++)
- if (str[i] == 'n')
- ++newlines;
- if (type == MCHAR || len == 0 || str[len - 1] != 'n')
- {
- extraline = 1;
- ++newlines; /* count extra newline at the end */
- }
- if (y_ptr->y_size > 0 && y_ptr->y_type == MCHAR)
- {
- append = TRUE;
- --newlines; /* uncount newline when appending first line */
- }
- /*
- * Allocate an array to hold the pointers to the new register lines.
- * If the register was not empty, move the existing lines to the new array.
- */
- pp = (char_u **)lalloc_clear((y_ptr->y_size + newlines)
- * sizeof(char_u *), TRUE);
- if (pp == NULL) /* out of memory */
- return;
- for (lnum = 0; lnum < y_ptr->y_size; ++lnum)
- pp[lnum] = y_ptr->y_array[lnum];
- vim_free(y_ptr->y_array);
- y_ptr->y_array = pp;
- /*
- * Find the end of each line and save it into the array.
- */
- for (start = 0; start < len + extraline; start += i + 1)
- {
- for (i = start; i < len; ++i) /* find the end of the line */
- if (str[i] == 'n')
- break;
- i -= start; /* i is now length of line */
- if (append)
- {
- --lnum;
- extra = STRLEN(y_ptr->y_array[lnum]);
- }
- else
- extra = 0;
- s = alloc((unsigned)(i + extra + 1));
- if (s == NULL)
- break;
- if (extra)
- {
- mch_memmove(s, y_ptr->y_array[lnum], (size_t)extra);
- vim_free(y_ptr->y_array[lnum]);
- }
- if (i)
- mch_memmove(s + extra, str + start, (size_t)i);
- extra += i;
- s[extra] = NUL;
- y_ptr->y_array[lnum++] = s;
- while (--extra >= 0)
- {
- if (*s == NUL)
- *s = 'n'; /* replace NUL with newline */
- ++s;
- }
- append = FALSE; /* only first line is appended */
- }
- y_ptr->y_type = type;
- y_ptr->y_size = lnum;
- }
- #endif /* USE_CLIPBOARD || WANT_EVAL || PROTO */
- void
- clear_oparg(oap)
- OPARG *oap;
- {
- vim_memset(oap, 0, sizeof(OPARG));
- }