/* vi:set ts=8 sts=4 sw=4 noet: * * 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. * See README.txt for an overview of the Vim source code. */ /* * change.c: functions related to changing text */ #include "vim.h" /* * If the file is readonly, give a warning message with the first change. * Don't do this for autocommands. * Doesn't use emsg(), because it flushes the macro buffer. * If we have undone all changes b_changed will be FALSE, but "b_did_warn" * will be TRUE. * "col" is the column for the message; non-zero when in insert mode and * 'showmode' is on. * Careful: may trigger autocommands that reload the buffer. */ void change_warning(int col) { static char *w_readonly = N_("W10: Warning: Changing a readonly file"); if (curbuf->b_did_warn == FALSE && curbufIsChanged() == 0 && !autocmd_busy && curbuf->b_p_ro) { ++curbuf_lock; apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf); --curbuf_lock; if (!curbuf->b_p_ro) return; // Do what msg() does, but with a column offset if the warning should // be after the mode message. msg_start(); if (msg_row == Rows - 1) msg_col = col; msg_source(HL_ATTR(HLF_W)); msg_puts_attr(_(w_readonly), HL_ATTR(HLF_W) | MSG_HIST); #ifdef FEAT_EVAL set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_readonly), -1); #endif msg_clr_eos(); (void)msg_end(); if (msg_silent == 0 && !silent_mode #ifdef FEAT_EVAL && time_for_testing != 1 #endif ) { out_flush(); ui_delay(1000L, TRUE); // give the user time to think about it } curbuf->b_did_warn = TRUE; redraw_cmdline = FALSE; // don't redraw and erase the message if (msg_row < Rows - 1) showmode(); } } /* * Call this function when something in the current buffer is changed. * * Most often called through changed_bytes() and changed_lines(), which also * mark the area of the display to be redrawn. * * Careful: may trigger autocommands that reload the buffer. */ void changed(void) { #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK) if (p_imst == IM_ON_THE_SPOT) { // The text of the preediting area is inserted, but this doesn't // mean a change of the buffer yet. That is delayed until the // text is committed. (this means preedit becomes empty) if (im_is_preediting() && !xim_changed_while_preediting) return; xim_changed_while_preediting = FALSE; } #endif if (!curbuf->b_changed) { int save_msg_scroll = msg_scroll; // Give a warning about changing a read-only file. This may also // check-out the file, thus change "curbuf"! change_warning(0); // Create a swap file if that is wanted. // Don't do this for "nofile" and "nowrite" buffer types. if (curbuf->b_may_swap #ifdef FEAT_QUICKFIX && !bt_dontwrite(curbuf) #endif ) { int save_need_wait_return = need_wait_return; need_wait_return = FALSE; ml_open_file(curbuf); // The ml_open_file() can cause an ATTENTION message. // Wait two seconds, to make sure the user reads this unexpected // message. Since we could be anywhere, call wait_return() now, // and don't let the emsg() set msg_scroll. if (need_wait_return && emsg_silent == 0) { out_flush(); ui_delay(2000L, TRUE); wait_return(TRUE); msg_scroll = save_msg_scroll; } else need_wait_return = save_need_wait_return; } changed_internal(); } ++CHANGEDTICK(curbuf); #ifdef FEAT_SEARCH_EXTRA // If a pattern is highlighted, the position may now be invalid. highlight_match = FALSE; #endif } /* * Internal part of changed(), no user interaction. * Also used for recovery. */ void changed_internal(void) { curbuf->b_changed = TRUE; ml_setflags(curbuf); check_status(curbuf); redraw_tabline = TRUE; #ifdef FEAT_TITLE need_maketitle = TRUE; // set window title later #endif } #ifdef FEAT_EVAL static long next_listener_id = 0; /* * Check if the change at "lnum" / "col" is above or overlaps with an existing * changed. If above then flush changes and invoke listeners. * If "merge" is TRUE do the merge. * Returns TRUE if the change was merged. */ static int check_recorded_changes( buf_T *buf, linenr_T lnum, colnr_T col, linenr_T lnume, long xtra, int merge) { if (buf->b_recorded_changes != NULL && xtra != 0) { listitem_T *li; linenr_T nr; for (li = buf->b_recorded_changes->lv_first; li != NULL; li = li->li_next) { nr = (linenr_T)dict_get_number( li->li_tv.vval.v_dict, (char_u *)"lnum"); if (nr >= lnum || nr > lnume) { if (li->li_next == NULL && lnum == nr && col + 1 == (colnr_T)dict_get_number( li->li_tv.vval.v_dict, (char_u *)"col")) { if (merge) { dictitem_T *di; // Same start point and nothing is following, entries // can be merged. di = dict_find(li->li_tv.vval.v_dict, (char_u *)"end", -1); if (di != NULL) { nr = tv_get_number(&di->di_tv); if (lnume > nr) di->di_tv.vval.v_number = lnume; } di = dict_find(li->li_tv.vval.v_dict, (char_u *)"added", -1); if (di != NULL) di->di_tv.vval.v_number += xtra; return TRUE; } } else { // the current change is going to make the line number in // the older change invalid, flush now invoke_listeners(curbuf); break; } } } } return FALSE; } /* * Record a change for listeners added with listener_add(). * Always for the current buffer. */ static void may_record_change( linenr_T lnum, colnr_T col, linenr_T lnume, long xtra) { dict_T *dict; if (curbuf->b_listener == NULL) return; // If the new change is going to change the line numbers in already listed // changes, then flush. if (check_recorded_changes(curbuf, lnum, col, lnume, xtra, TRUE)) return; if (curbuf->b_recorded_changes == NULL) { curbuf->b_recorded_changes = list_alloc(); if (curbuf->b_recorded_changes == NULL) // out of memory return; ++curbuf->b_recorded_changes->lv_refcount; curbuf->b_recorded_changes->lv_lock = VAR_FIXED; } dict = dict_alloc(); if (dict == NULL) return; dict_add_number(dict, "lnum", (varnumber_T)lnum); dict_add_number(dict, "end", (varnumber_T)lnume); dict_add_number(dict, "added", (varnumber_T)xtra); dict_add_number(dict, "col", (varnumber_T)col + 1); list_append_dict(curbuf->b_recorded_changes, dict); } /* * listener_add() function */ void f_listener_add(typval_T *argvars, typval_T *rettv) { char_u *callback; partial_T *partial; listener_T *lnr; buf_T *buf = curbuf; callback = get_callback(&argvars[0], &partial); if (callback == NULL) return; if (argvars[1].v_type != VAR_UNKNOWN) { buf = get_buf_arg(&argvars[1]); if (buf == NULL) return; } lnr = (listener_T *)alloc_clear((sizeof(listener_T))); if (lnr == NULL) { free_callback(callback, partial); return; } lnr->lr_next = buf->b_listener; buf->b_listener = lnr; if (partial == NULL) lnr->lr_callback = vim_strsave(callback); else lnr->lr_callback = callback; // pointer into the partial lnr->lr_partial = partial; lnr->lr_id = ++next_listener_id; rettv->vval.v_number = lnr->lr_id; } /* * listener_flush() function */ void f_listener_flush(typval_T *argvars, typval_T *rettv UNUSED) { buf_T *buf = curbuf; if (argvars[0].v_type != VAR_UNKNOWN) { buf = get_buf_arg(&argvars[0]); if (buf == NULL) return; } invoke_listeners(buf); } /* * listener_remove() function */ void f_listener_remove(typval_T *argvars, typval_T *rettv UNUSED) { listener_T *lnr; listener_T *next; listener_T *prev = NULL; int id = tv_get_number(argvars); buf_T *buf; for (buf = firstbuf; buf != NULL; buf = buf->b_next) for (lnr = buf->b_listener; lnr != NULL; lnr = next) { next = lnr->lr_next; if (lnr->lr_id == id) { if (prev != NULL) prev->lr_next = lnr->lr_next; else buf->b_listener = lnr->lr_next; free_callback(lnr->lr_callback, lnr->lr_partial); vim_free(lnr); } prev = lnr; } } /* * Called before inserting a line above "lnum"/"lnum3" or deleting line "lnum" * to "lnume". */ void may_invoke_listeners(buf_T *buf, linenr_T lnum, linenr_T lnume, int added) { check_recorded_changes(buf, lnum, 0, lnume, added, FALSE); } /* * Called when a sequence of changes is done: invoke listeners added with * listener_add(). */ void invoke_listeners(buf_T *buf) { listener_T *lnr; typval_T rettv; int dummy; typval_T argv[6]; listitem_T *li; linenr_T start = MAXLNUM; linenr_T end = 0; linenr_T added = 0; if (buf->b_recorded_changes == NULL // nothing changed || buf->b_listener == NULL) // no listeners return; argv[0].v_type = VAR_NUMBER; argv[0].vval.v_number = buf->b_fnum; // a:bufnr for (li = buf->b_recorded_changes->lv_first; li != NULL; li = li->li_next) { varnumber_T lnum; lnum = dict_get_number(li->li_tv.vval.v_dict, (char_u *)"lnum"); if (start > lnum) start = lnum; lnum = dict_get_number(li->li_tv.vval.v_dict, (char_u *)"end"); if (lnum > end) end = lnum; added = dict_get_number(li->li_tv.vval.v_dict, (char_u *)"added"); } argv[1].v_type = VAR_NUMBER; argv[1].vval.v_number = start; argv[2].v_type = VAR_NUMBER; argv[2].vval.v_number = end; argv[3].v_type = VAR_NUMBER; argv[3].vval.v_number = added; argv[4].v_type = VAR_LIST; argv[4].vval.v_list = buf->b_recorded_changes; ++textlock; for (lnr = buf->b_listener; lnr != NULL; lnr = lnr->lr_next) { call_func(lnr->lr_callback, -1, &rettv, 5, argv, NULL, 0L, 0L, &dummy, TRUE, lnr->lr_partial, NULL); clear_tv(&rettv); } --textlock; list_unref(buf->b_recorded_changes); buf->b_recorded_changes = NULL; } #endif /* * Common code for when a change was made. * See changed_lines() for the arguments. * Careful: may trigger autocommands that reload the buffer. */ static void changed_common( linenr_T lnum, colnr_T col, linenr_T lnume, long xtra) { win_T *wp; tabpage_T *tp; int i; #ifdef FEAT_JUMPLIST int cols; pos_T *p; int add; #endif // mark the buffer as modified changed(); #ifdef FEAT_EVAL may_record_change(lnum, col, lnume, xtra); #endif #ifdef FEAT_DIFF if (curwin->w_p_diff && diff_internal()) curtab->tp_diff_update = TRUE; #endif // set the '. mark if (!cmdmod.keepjumps) { curbuf->b_last_change.lnum = lnum; curbuf->b_last_change.col = col; #ifdef FEAT_JUMPLIST // Create a new entry if a new undo-able change was started or we // don't have an entry yet. if (curbuf->b_new_change || curbuf->b_changelistlen == 0) { if (curbuf->b_changelistlen == 0) add = TRUE; else { // Don't create a new entry when the line number is the same // as the last one and the column is not too far away. Avoids // creating many entries for typing "xxxxx". p = &curbuf->b_changelist[curbuf->b_changelistlen - 1]; if (p->lnum != lnum) add = TRUE; else { cols = comp_textwidth(FALSE); if (cols == 0) cols = 79; add = (p->col + cols < col || col + cols < p->col); } } if (add) { // This is the first of a new sequence of undo-able changes // and it's at some distance of the last change. Use a new // position in the changelist. curbuf->b_new_change = FALSE; if (curbuf->b_changelistlen == JUMPLISTSIZE) { // changelist is full: remove oldest entry curbuf->b_changelistlen = JUMPLISTSIZE - 1; mch_memmove(curbuf->b_changelist, curbuf->b_changelist + 1, sizeof(pos_T) * (JUMPLISTSIZE - 1)); FOR_ALL_TAB_WINDOWS(tp, wp) { // Correct position in changelist for other windows on // this buffer. if (wp->w_buffer == curbuf && wp->w_changelistidx > 0) --wp->w_changelistidx; } } FOR_ALL_TAB_WINDOWS(tp, wp) { // For other windows, if the position in the changelist is // at the end it stays at the end. if (wp->w_buffer == curbuf && wp->w_changelistidx == curbuf->b_changelistlen) ++wp->w_changelistidx; } ++curbuf->b_changelistlen; } } curbuf->b_changelist[curbuf->b_changelistlen - 1] = curbuf->b_last_change; // The current window is always after the last change, so that "g," // takes you back to it. curwin->w_changelistidx = curbuf->b_changelistlen; #endif } FOR_ALL_TAB_WINDOWS(tp, wp) { if (wp->w_buffer == curbuf) { // Mark this window to be redrawn later. if (wp->w_redr_type < VALID) wp->w_redr_type = VALID; // Check if a change in the buffer has invalidated the cached // values for the cursor. #ifdef FEAT_FOLDING // Update the folds for this window. Can't postpone this, because // a following operator might work on the whole fold: ">>dd". foldUpdate(wp, lnum, lnume + xtra - 1); // The change may cause lines above or below the change to become // included in a fold. Set lnum/lnume to the first/last line that // might be displayed differently. // Set w_cline_folded here as an efficient way to update it when // inserting lines just above a closed fold. i = hasFoldingWin(wp, lnum, &lnum, NULL, FALSE, NULL); if (wp->w_cursor.lnum == lnum) wp->w_cline_folded = i; i = hasFoldingWin(wp, lnume, NULL, &lnume, FALSE, NULL); if (wp->w_cursor.lnum == lnume) wp->w_cline_folded = i; // If the changed line is in a range of previously folded lines, // compare with the first line in that range. if (wp->w_cursor.lnum <= lnum) { i = find_wl_entry(wp, lnum); if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum) changed_line_abv_curs_win(wp); } #endif if (wp->w_cursor.lnum > lnum) changed_line_abv_curs_win(wp); else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col) changed_cline_bef_curs_win(wp); if (wp->w_botline >= lnum) { // Assume that botline doesn't change (inserted lines make // other lines scroll down below botline). approximate_botline_win(wp); } // Check if any w_lines[] entries have become invalid. // For entries below the change: Correct the lnums for // inserted/deleted lines. Makes it possible to stop displaying // after the change. for (i = 0; i < wp->w_lines_valid; ++i) if (wp->w_lines[i].wl_valid) { if (wp->w_lines[i].wl_lnum >= lnum) { if (wp->w_lines[i].wl_lnum < lnume) { // line included in change wp->w_lines[i].wl_valid = FALSE; } else if (xtra != 0) { // line below change wp->w_lines[i].wl_lnum += xtra; #ifdef FEAT_FOLDING wp->w_lines[i].wl_lastlnum += xtra; #endif } } #ifdef FEAT_FOLDING else if (wp->w_lines[i].wl_lastlnum >= lnum) { // change somewhere inside this range of folded lines, // may need to be redrawn wp->w_lines[i].wl_valid = FALSE; } #endif } #ifdef FEAT_FOLDING // Take care of side effects for setting w_topline when folds have // changed. Esp. when the buffer was changed in another window. if (hasAnyFolding(wp)) set_topline(wp, wp->w_topline); #endif // relative numbering may require updating more if (wp->w_p_rnu) redraw_win_later(wp, SOME_VALID); } } // Call update_screen() later, which checks out what needs to be redrawn, // since it notices b_mod_set and then uses b_mod_*. if (must_redraw < VALID) must_redraw = VALID; // when the cursor line is changed always trigger CursorMoved if (lnum <= curwin->w_cursor.lnum && lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum) last_cursormoved.lnum = 0; } static void changedOneline(buf_T *buf, linenr_T lnum) { if (buf->b_mod_set) { // find the maximum area that must be redisplayed if (lnum < buf->b_mod_top) buf->b_mod_top = lnum; else if (lnum >= buf->b_mod_bot) buf->b_mod_bot = lnum + 1; } else { // set the area that must be redisplayed to one line buf->b_mod_set = TRUE; buf->b_mod_top = lnum; buf->b_mod_bot = lnum + 1; buf->b_mod_xlines = 0; } } /* * Changed bytes within a single line for the current buffer. * - marks the windows on this buffer to be redisplayed * - marks the buffer changed by calling changed() * - invalidates cached values * Careful: may trigger autocommands that reload the buffer. */ void changed_bytes(linenr_T lnum, colnr_T col) { changedOneline(curbuf, lnum); changed_common(lnum, col, lnum + 1, 0L); #ifdef FEAT_DIFF // Diff highlighting in other diff windows may need to be updated too. if (curwin->w_p_diff) { win_T *wp; linenr_T wlnum; FOR_ALL_WINDOWS(wp) if (wp->w_p_diff && wp != curwin) { redraw_win_later(wp, VALID); wlnum = diff_lnum_win(lnum, wp); if (wlnum > 0) changedOneline(wp->w_buffer, wlnum); } } #endif } /* * Like changed_bytes() but also adjust text properties for "added" bytes. * When "added" is negative text was deleted. */ void inserted_bytes(linenr_T lnum, colnr_T col, int added UNUSED) { #ifdef FEAT_TEXT_PROP if (curbuf->b_has_textprop && added != 0) adjust_prop_columns(lnum, col, added, 0); #endif changed_bytes(lnum, col); } /* * Appended "count" lines below line "lnum" in the current buffer. * Must be called AFTER the change and after mark_adjust(). * Takes care of marking the buffer to be redrawn and sets the changed flag. */ void appended_lines(linenr_T lnum, long count) { changed_lines(lnum + 1, 0, lnum + 1, count); } /* * Like appended_lines(), but adjust marks first. */ void appended_lines_mark(linenr_T lnum, long count) { // Skip mark_adjust when adding a line after the last one, there can't // be marks there. But it's still needed in diff mode. if (lnum + count < curbuf->b_ml.ml_line_count #ifdef FEAT_DIFF || curwin->w_p_diff #endif ) mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L); changed_lines(lnum + 1, 0, lnum + 1, count); } /* * Deleted "count" lines at line "lnum" in the current buffer. * Must be called AFTER the change and after mark_adjust(). * Takes care of marking the buffer to be redrawn and sets the changed flag. */ void deleted_lines(linenr_T lnum, long count) { changed_lines(lnum, 0, lnum + count, -count); } /* * Like deleted_lines(), but adjust marks first. * Make sure the cursor is on a valid line before calling, a GUI callback may * be triggered to display the cursor. */ void deleted_lines_mark(linenr_T lnum, long count) { mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count); changed_lines(lnum, 0, lnum + count, -count); } /* * Marks the area to be redrawn after a change. */ static void changed_lines_buf( buf_T *buf, linenr_T lnum, // first line with change linenr_T lnume, // line below last changed line long xtra) // number of extra lines (negative when deleting) { if (buf->b_mod_set) { // find the maximum area that must be redisplayed if (lnum < buf->b_mod_top) buf->b_mod_top = lnum; if (lnum < buf->b_mod_bot) { // adjust old bot position for xtra lines buf->b_mod_bot += xtra; if (buf->b_mod_bot < lnum) buf->b_mod_bot = lnum; } if (lnume + xtra > buf->b_mod_bot) buf->b_mod_bot = lnume + xtra; buf->b_mod_xlines += xtra; } else { // set the area that must be redisplayed buf->b_mod_set = TRUE; buf->b_mod_top = lnum; buf->b_mod_bot = lnume + xtra; buf->b_mod_xlines = xtra; } } /* * Changed lines for the current buffer. * Must be called AFTER the change and after mark_adjust(). * - mark the buffer changed by calling changed() * - mark the windows on this buffer to be redisplayed * - invalidate cached values * "lnum" is the first line that needs displaying, "lnume" the first line * below the changed lines (BEFORE the change). * When only inserting lines, "lnum" and "lnume" are equal. * Takes care of calling changed() and updating b_mod_*. * Careful: may trigger autocommands that reload the buffer. */ void changed_lines( linenr_T lnum, // first line with change colnr_T col, // column in first line with change linenr_T lnume, // line below last changed line long xtra) // number of extra lines (negative when deleting) { changed_lines_buf(curbuf, lnum, lnume, xtra); #ifdef FEAT_DIFF if (xtra == 0 && curwin->w_p_diff && !diff_internal()) { // When the number of lines doesn't change then mark_adjust() isn't // called and other diff buffers still need to be marked for // displaying. win_T *wp; linenr_T wlnum; FOR_ALL_WINDOWS(wp) if (wp->w_p_diff && wp != curwin) { redraw_win_later(wp, VALID); wlnum = diff_lnum_win(lnum, wp); if (wlnum > 0) changed_lines_buf(wp->w_buffer, wlnum, lnume - lnum + wlnum, 0L); } } #endif changed_common(lnum, col, lnume, xtra); } /* * Called when the changed flag must be reset for buffer "buf". * When "ff" is TRUE also reset 'fileformat'. */ void unchanged(buf_T *buf, int ff) { if (buf->b_changed || (ff && file_ff_differs(buf, FALSE))) { buf->b_changed = 0; ml_setflags(buf); if (ff) save_file_ff(buf); check_status(buf); redraw_tabline = TRUE; #ifdef FEAT_TITLE need_maketitle = TRUE; // set window title later #endif } ++CHANGEDTICK(buf); #ifdef FEAT_NETBEANS_INTG netbeans_unmodified(buf); #endif } /* * Insert string "p" at the cursor position. Stops at a NUL byte. * Handles Replace mode and multi-byte characters. */ void ins_bytes(char_u *p) { ins_bytes_len(p, (int)STRLEN(p)); } /* * Insert string "p" with length "len" at the cursor position. * Handles Replace mode and multi-byte characters. */ void ins_bytes_len(char_u *p, int len) { int i; int n; if (has_mbyte) for (i = 0; i < len; i += n) { if (enc_utf8) // avoid reading past p[len] n = utfc_ptr2len_len(p + i, len - i); else n = (*mb_ptr2len)(p + i); ins_char_bytes(p + i, n); } else for (i = 0; i < len; ++i) ins_char(p[i]); } /* * Insert or replace a single character at the cursor position. * When in REPLACE or VREPLACE mode, replace any existing character. * Caller must have prepared for undo. * For multi-byte characters we get the whole character, the caller must * convert bytes to a character. */ void ins_char(int c) { char_u buf[MB_MAXBYTES + 1]; int n = (*mb_char2bytes)(c, buf); // When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte. // Happens for CTRL-Vu9900. if (buf[0] == 0) buf[0] = '\n'; ins_char_bytes(buf, n); } void ins_char_bytes(char_u *buf, int charlen) { int c = buf[0]; int newlen; // nr of bytes inserted int oldlen; // nr of bytes deleted (0 when not replacing) char_u *p; char_u *newp; char_u *oldp; int linelen; // length of old line including NUL colnr_T col; linenr_T lnum = curwin->w_cursor.lnum; int i; // Break tabs if needed. if (virtual_active() && curwin->w_cursor.coladd > 0) coladvance_force(getviscol()); col = curwin->w_cursor.col; oldp = ml_get(lnum); linelen = (int)STRLEN(oldp) + 1; // The lengths default to the values for when not replacing. oldlen = 0; newlen = charlen; if (State & REPLACE_FLAG) { if (State & VREPLACE_FLAG) { colnr_T new_vcol = 0; // init for GCC colnr_T vcol; int old_list; // Disable 'list' temporarily, unless 'cpo' contains the 'L' flag. // Returns the old value of list, so when finished, // curwin->w_p_list should be set back to this. old_list = curwin->w_p_list; if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL) curwin->w_p_list = FALSE; // In virtual replace mode each character may replace one or more // characters (zero if it's a TAB). Count the number of bytes to // be deleted to make room for the new character, counting screen // cells. May result in adding spaces to fill a gap. getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL); new_vcol = vcol + chartabsize(buf, vcol); while (oldp[col + oldlen] != NUL && vcol < new_vcol) { vcol += chartabsize(oldp + col + oldlen, vcol); // Don't need to remove a TAB that takes us to the right // position. if (vcol > new_vcol && oldp[col + oldlen] == TAB) break; oldlen += (*mb_ptr2len)(oldp + col + oldlen); // Deleted a bit too much, insert spaces. if (vcol > new_vcol) newlen += vcol - new_vcol; } curwin->w_p_list = old_list; } else if (oldp[col] != NUL) { // normal replace oldlen = (*mb_ptr2len)(oldp + col); } // Push the replaced bytes onto the replace stack, so that they can be // put back when BS is used. The bytes of a multi-byte character are // done the other way around, so that the first byte is popped off // first (it tells the byte length of the character). replace_push(NUL); for (i = 0; i < oldlen; ++i) { if (has_mbyte) i += replace_push_mb(oldp + col + i) - 1; else replace_push(oldp[col + i]); } } newp = alloc_check((unsigned)(linelen + newlen - oldlen)); if (newp == NULL) return; // Copy bytes before the cursor. if (col > 0) mch_memmove(newp, oldp, (size_t)col); // Copy bytes after the changed character(s). p = newp + col; if (linelen > col + oldlen) mch_memmove(p + newlen, oldp + col + oldlen, (size_t)(linelen - col - oldlen)); // Insert or overwrite the new character. mch_memmove(p, buf, charlen); i = charlen; // Fill with spaces when necessary. while (i < newlen) p[i++] = ' '; // Replace the line in the buffer. ml_replace(lnum, newp, FALSE); // mark the buffer as changed and prepare for displaying inserted_bytes(lnum, col, newlen - oldlen); // If we're in Insert or Replace mode and 'showmatch' is set, then briefly // show the match for right parens and braces. if (p_sm && (State & INSERT) && msg_silent == 0 #ifdef FEAT_INS_EXPAND && !ins_compl_active() #endif ) { if (has_mbyte) showmatch(mb_ptr2char(buf)); else showmatch(c); } #ifdef FEAT_RIGHTLEFT if (!p_ri || (State & REPLACE_FLAG)) #endif { // Normal insert: move cursor right curwin->w_cursor.col += charlen; } // TODO: should try to update w_row here, to avoid recomputing it later. } /* * Insert a string at the cursor position. * Note: Does NOT handle Replace mode. * Caller must have prepared for undo. */ void ins_str(char_u *s) { char_u *oldp, *newp; int newlen = (int)STRLEN(s); int oldlen; colnr_T col; linenr_T lnum = curwin->w_cursor.lnum; if (virtual_active() && curwin->w_cursor.coladd > 0) coladvance_force(getviscol()); col = curwin->w_cursor.col; oldp = ml_get(lnum); oldlen = (int)STRLEN(oldp); newp = alloc_check((unsigned)(oldlen + newlen + 1)); if (newp == NULL) return; if (col > 0) mch_memmove(newp, oldp, (size_t)col); mch_memmove(newp + col, s, (size_t)newlen); mch_memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1)); ml_replace(lnum, newp, FALSE); inserted_bytes(lnum, col, newlen); curwin->w_cursor.col += newlen; } /* * Delete one character under the cursor. * If "fixpos" is TRUE, don't leave the cursor on the NUL after the line. * Caller must have prepared for undo. * * return FAIL for failure, OK otherwise */ int del_char(int fixpos) { if (has_mbyte) { // Make sure the cursor is at the start of a character. mb_adjust_cursor(); if (*ml_get_cursor() == NUL) return FAIL; return del_chars(1L, fixpos); } return del_bytes(1L, fixpos, TRUE); } /* * Like del_bytes(), but delete characters instead of bytes. */ int del_chars(long count, int fixpos) { long bytes = 0; long i; char_u *p; int l; p = ml_get_cursor(); for (i = 0; i < count && *p != NUL; ++i) { l = (*mb_ptr2len)(p); bytes += l; p += l; } return del_bytes(bytes, fixpos, TRUE); } /* * Delete "count" bytes under the cursor. * If "fixpos" is TRUE, don't leave the cursor on the NUL after the line. * Caller must have prepared for undo. * * Return FAIL for failure, OK otherwise. */ int del_bytes( long count, int fixpos_arg, int use_delcombine UNUSED) // 'delcombine' option applies { char_u *oldp, *newp; colnr_T oldlen; colnr_T newlen; linenr_T lnum = curwin->w_cursor.lnum; colnr_T col = curwin->w_cursor.col; int alloc_newp; long movelen; int fixpos = fixpos_arg; oldp = ml_get(lnum); oldlen = (int)STRLEN(oldp); // Can't do anything when the cursor is on the NUL after the line. if (col >= oldlen) return FAIL; // If "count" is zero there is nothing to do. if (count == 0) return OK; // If "count" is negative the caller must be doing something wrong. if (count < 1) { siemsg("E950: Invalid count for del_bytes(): %ld", count); return FAIL; } // If 'delcombine' is set and deleting (less than) one character, only // delete the last combining character. if (p_deco && use_delcombine && enc_utf8 && utfc_ptr2len(oldp + col) >= count) { int cc[MAX_MCO]; int n; (void)utfc_ptr2char(oldp + col, cc); if (cc[0] != NUL) { // Find the last composing char, there can be several. n = col; do { col = n; count = utf_ptr2len(oldp + n); n += count; } while (UTF_COMPOSINGLIKE(oldp + col, oldp + n)); fixpos = 0; } } // When count is too big, reduce it. movelen = (long)oldlen - (long)col - count + 1; // includes trailing NUL if (movelen <= 1) { // If we just took off the last character of a non-blank line, and // fixpos is TRUE, we don't want to end up positioned at the NUL, // unless "restart_edit" is set or 'virtualedit' contains "onemore". if (col > 0 && fixpos && restart_edit == 0 && (ve_flags & VE_ONEMORE) == 0) { --curwin->w_cursor.col; curwin->w_cursor.coladd = 0; if (has_mbyte) curwin->w_cursor.col -= (*mb_head_off)(oldp, oldp + curwin->w_cursor.col); } count = oldlen - col; movelen = 1; } newlen = oldlen - count; // If the old line has been allocated the deletion can be done in the // existing line. Otherwise a new line has to be allocated // Can't do this when using Netbeans, because we would need to invoke // netbeans_removed(), which deallocates the line. Let ml_replace() take // care of notifying Netbeans. #ifdef FEAT_NETBEANS_INTG if (netbeans_active()) alloc_newp = TRUE; else #endif alloc_newp = !ml_line_alloced(); // check if oldp was allocated if (!alloc_newp) newp = oldp; // use same allocated memory else { // need to allocate a new line newp = alloc((unsigned)(newlen + 1)); if (newp == NULL) return FAIL; mch_memmove(newp, oldp, (size_t)col); } mch_memmove(newp + col, oldp + col + count, (size_t)movelen); if (alloc_newp) ml_replace(lnum, newp, FALSE); #ifdef FEAT_TEXT_PROP else { // Also move any following text properties. if (oldlen + 1 < curbuf->b_ml.ml_line_len) mch_memmove(newp + newlen + 1, oldp + oldlen + 1, (size_t)curbuf->b_ml.ml_line_len - oldlen - 1); curbuf->b_ml.ml_line_len -= count; } #endif // mark the buffer as changed and prepare for displaying inserted_bytes(lnum, curwin->w_cursor.col, -count); return OK; } /* * Copy the indent from ptr to the current line (and fill to size) * Leaves the cursor on the first non-blank in the line. * Returns TRUE if the line was changed. */ static int copy_indent(int size, char_u *src) { char_u *p = NULL; char_u *line = NULL; char_u *s; int todo; int ind_len; int line_len = 0; int tab_pad; int ind_done; int round; #ifdef FEAT_VARTABS int ind_col; #endif // Round 1: compute the number of characters needed for the indent // Round 2: copy the characters. for (round = 1; round <= 2; ++round) { todo = size; ind_len = 0; ind_done = 0; #ifdef FEAT_VARTABS ind_col = 0; #endif s = src; // Count/copy the usable portion of the source line while (todo > 0 && VIM_ISWHITE(*s)) { if (*s == TAB) { #ifdef FEAT_VARTABS tab_pad = tabstop_padding(ind_done, curbuf->b_p_ts, curbuf->b_p_vts_array); #else tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); #endif // Stop if this tab will overshoot the target if (todo < tab_pad) break; todo -= tab_pad; ind_done += tab_pad; #ifdef FEAT_VARTABS ind_col += tab_pad; #endif } else { --todo; ++ind_done; #ifdef FEAT_VARTABS ++ind_col; #endif } ++ind_len; if (p != NULL) *p++ = *s; ++s; } // Fill to next tabstop with a tab, if possible #ifdef FEAT_VARTABS tab_pad = tabstop_padding(ind_done, curbuf->b_p_ts, curbuf->b_p_vts_array); #else tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); #endif if (todo >= tab_pad && !curbuf->b_p_et) { todo -= tab_pad; ++ind_len; #ifdef FEAT_VARTABS ind_col += tab_pad; #endif if (p != NULL) *p++ = TAB; } // Add tabs required for indent if (!curbuf->b_p_et) { #ifdef FEAT_VARTABS for (;;) { tab_pad = tabstop_padding(ind_col, curbuf->b_p_ts, curbuf->b_p_vts_array); if (todo < tab_pad) break; todo -= tab_pad; ++ind_len; ind_col += tab_pad; if (p != NULL) *p++ = TAB; } #else while (todo >= (int)curbuf->b_p_ts) { todo -= (int)curbuf->b_p_ts; ++ind_len; if (p != NULL) *p++ = TAB; } #endif } // Count/add spaces required for indent while (todo > 0) { --todo; ++ind_len; if (p != NULL) *p++ = ' '; } if (p == NULL) { // Allocate memory for the result: the copied indent, new indent // and the rest of the line. line_len = (int)STRLEN(ml_get_curline()) + 1; line = alloc(ind_len + line_len); if (line == NULL) return FALSE; p = line; } } // Append the original line mch_memmove(p, ml_get_curline(), (size_t)line_len); // Replace the line ml_replace(curwin->w_cursor.lnum, line, FALSE); // Put the cursor after the indent. curwin->w_cursor.col = ind_len; return TRUE; } /* * open_line: Add a new line below or above the current line. * * For VREPLACE mode, we only add a new line when we get to the end of the * file, otherwise we just start replacing the next line. * * Caller must take care of undo. Since VREPLACE may affect any number of * lines however, it may call u_save_cursor() again when starting to change a * new line. * "flags": OPENLINE_DELSPACES delete spaces after cursor * OPENLINE_DO_COM format comments * OPENLINE_KEEPTRAIL keep trailing spaces * OPENLINE_MARKFIX adjust mark positions after the line break * OPENLINE_COM_LIST format comments with list or 2nd line indent * * "second_line_indent": indent for after ^^D in Insert mode or if flag * OPENLINE_COM_LIST * * Return OK for success, FAIL for failure */ int open_line( int dir, // FORWARD or BACKWARD int flags, int second_line_indent) { char_u *saved_line; // copy of the original line char_u *next_line = NULL; // copy of the next line char_u *p_extra = NULL; // what goes to next line int less_cols = 0; // less columns for mark in new line int less_cols_off = 0; // columns to skip for mark adjust pos_T old_cursor; // old cursor position int newcol = 0; // new cursor column int newindent = 0; // auto-indent of the new line int n; int trunc_line = FALSE; // truncate current line afterwards int retval = FAIL; // return value #ifdef FEAT_COMMENTS int extra_len = 0; // length of p_extra string int lead_len; // length of comment leader char_u *lead_flags; // position in 'comments' for comment leader char_u *leader = NULL; // copy of comment leader #endif char_u *allocated = NULL; // allocated memory char_u *p; int saved_char = NUL; // init for GCC #if defined(FEAT_SMARTINDENT) || defined(FEAT_COMMENTS) pos_T *pos; #endif #ifdef FEAT_SMARTINDENT int do_si = (!p_paste && curbuf->b_p_si # ifdef FEAT_CINDENT && !curbuf->b_p_cin # endif # ifdef FEAT_EVAL && *curbuf->b_p_inde == NUL # endif ); int no_si = FALSE; // reset did_si afterwards int first_char = NUL; // init for GCC #endif #if defined(FEAT_LISP) || defined(FEAT_CINDENT) int vreplace_mode; #endif int did_append; // appended a new line int saved_pi = curbuf->b_p_pi; // copy of preserveindent setting // make a copy of the current line so we can mess with it saved_line = vim_strsave(ml_get_curline()); if (saved_line == NULL) /* out of memory! */ return FALSE; if (State & VREPLACE_FLAG) { // With VREPLACE we make a copy of the next line, which we will be // starting to replace. First make the new line empty and let vim play // with the indenting and comment leader to its heart's content. Then // we grab what it ended up putting on the new line, put back the // original line, and call ins_char() to put each new character onto // the line, replacing what was there before and pushing the right // stuff onto the replace stack. -- webb. if (curwin->w_cursor.lnum < orig_line_count) next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1)); else next_line = vim_strsave((char_u *)""); if (next_line == NULL) // out of memory! goto theend; // In VREPLACE mode, a NL replaces the rest of the line, and starts // replacing the next line, so push all of the characters left on the // line onto the replace stack. We'll push any other characters that // might be replaced at the start of the next line (due to autoindent // etc) a bit later. replace_push(NUL); // Call twice because BS over NL expects it replace_push(NUL); p = saved_line + curwin->w_cursor.col; while (*p != NUL) { if (has_mbyte) p += replace_push_mb(p); else replace_push(*p++); } saved_line[curwin->w_cursor.col] = NUL; } if ((State & INSERT) && !(State & VREPLACE_FLAG)) { p_extra = saved_line + curwin->w_cursor.col; #ifdef FEAT_SMARTINDENT if (do_si) // need first char after new line break { p = skipwhite(p_extra); first_char = *p; } #endif #ifdef FEAT_COMMENTS extra_len = (int)STRLEN(p_extra); #endif saved_char = *p_extra; *p_extra = NUL; } u_clearline(); // cannot do "U" command when adding lines #ifdef FEAT_SMARTINDENT did_si = FALSE; #endif ai_col = 0; // If we just did an auto-indent, then we didn't type anything on // the prior line, and it should be truncated. Do this even if 'ai' is not // set because automatically inserting a comment leader also sets did_ai. if (dir == FORWARD && did_ai) trunc_line = TRUE; // If 'autoindent' and/or 'smartindent' is set, try to figure out what // indent to use for the new line. if (curbuf->b_p_ai #ifdef FEAT_SMARTINDENT || do_si #endif ) { // count white space on current line #ifdef FEAT_VARTABS newindent = get_indent_str_vtab(saved_line, curbuf->b_p_ts, curbuf->b_p_vts_array, FALSE); #else newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts, FALSE); #endif if (newindent == 0 && !(flags & OPENLINE_COM_LIST)) newindent = second_line_indent; // for ^^D command in insert mode #ifdef FEAT_SMARTINDENT // Do smart indenting. // In insert/replace mode (only when dir == FORWARD) // we may move some text to the next line. If it starts with '{' // don't add an indent. Fixes inserting a NL before '{' in line // "if (condition) {" if (!trunc_line && do_si && *saved_line != NUL && (p_extra == NULL || first_char != '{')) { char_u *ptr; char_u last_char; old_cursor = curwin->w_cursor; ptr = saved_line; # ifdef FEAT_COMMENTS if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); else lead_len = 0; # endif if (dir == FORWARD) { // Skip preprocessor directives, unless they are // recognised as comments. if ( # ifdef FEAT_COMMENTS lead_len == 0 && # endif ptr[0] == '#') { while (ptr[0] == '#' && curwin->w_cursor.lnum > 1) ptr = ml_get(--curwin->w_cursor.lnum); newindent = get_indent(); } # ifdef FEAT_COMMENTS if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); else lead_len = 0; if (lead_len > 0) { // This case gets the following right: // /* // * A comment (read '\' as '/'). // */ // #define IN_THE_WAY // This should line up here; p = skipwhite(ptr); if (p[0] == '/' && p[1] == '*') p++; if (p[0] == '*') { for (p++; *p; p++) { if (p[0] == '/' && p[-1] == '*') { // End of C comment, indent should line up // with the line containing the start of // the comment curwin->w_cursor.col = (colnr_T)(p - ptr); if ((pos = findmatch(NULL, NUL)) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); } } } } } else // Not a comment line # endif { // Find last non-blank in line p = ptr + STRLEN(ptr) - 1; while (p > ptr && VIM_ISWHITE(*p)) --p; last_char = *p; // find the character just before the '{' or ';' if (last_char == '{' || last_char == ';') { if (p > ptr) --p; while (p > ptr && VIM_ISWHITE(*p)) --p; } // Try to catch lines that are split over multiple // lines. eg: // if (condition && // condition) { // Should line up here! // } if (*p == ')') { curwin->w_cursor.col = (colnr_T)(p - ptr); if ((pos = findmatch(NULL, '(')) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); ptr = ml_get_curline(); } } // If last character is '{' do indent, without // checking for "if" and the like. if (last_char == '{') { did_si = TRUE; // do indent no_si = TRUE; // don't delete it when '{' typed } // Look for "if" and the like, use 'cinwords'. // Don't do this if the previous line ended in ';' or // '}'. else if (last_char != ';' && last_char != '}' && cin_is_cinword(ptr)) did_si = TRUE; } } else // dir == BACKWARD { // Skip preprocessor directives, unless they are // recognised as comments. if ( # ifdef FEAT_COMMENTS lead_len == 0 && # endif ptr[0] == '#') { int was_backslashed = FALSE; while ((ptr[0] == '#' || was_backslashed) && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) { if (*ptr && ptr[STRLEN(ptr) - 1] == '\\') was_backslashed = TRUE; else was_backslashed = FALSE; ptr = ml_get(++curwin->w_cursor.lnum); } if (was_backslashed) newindent = 0; // Got to end of file else newindent = get_indent(); } p = skipwhite(ptr); if (*p == '}') // if line starts with '}': do indent did_si = TRUE; else // can delete indent when '{' typed can_si_back = TRUE; } curwin->w_cursor = old_cursor; } if (do_si) can_si = TRUE; #endif // FEAT_SMARTINDENT did_ai = TRUE; } #ifdef FEAT_COMMENTS // Find out if the current line starts with a comment leader. // This may then be inserted in front of the new line. end_comment_pending = NUL; if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD, TRUE); else lead_len = 0; if (lead_len > 0) { char_u *lead_repl = NULL; // replaces comment leader int lead_repl_len = 0; // length of *lead_repl char_u lead_middle[COM_MAX_LEN]; // middle-comment string char_u lead_end[COM_MAX_LEN]; // end-comment string char_u *comment_end = NULL; // where lead_end has been found int extra_space = FALSE; // append extra space int current_flag; int require_blank = FALSE; // requires blank after middle char_u *p2; // If the comment leader has the start, middle or end flag, it may not // be used or may be replaced with the middle leader. for (p = lead_flags; *p && *p != ':'; ++p) { if (*p == COM_BLANK) { require_blank = TRUE; continue; } if (*p == COM_START || *p == COM_MIDDLE) { current_flag = *p; if (*p == COM_START) { // Doing "O" on a start of comment does not insert leader. if (dir == BACKWARD) { lead_len = 0; break; } // find start of middle part (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); require_blank = FALSE; } // Isolate the strings of the middle and end leader. while (*p && p[-1] != ':') /* find end of middle flags */ { if (*p == COM_BLANK) require_blank = TRUE; ++p; } (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); while (*p && p[-1] != ':') // find end of end flags { // Check whether we allow automatic ending of comments if (*p == COM_AUTO_END) end_comment_pending = -1; // means we want to set it ++p; } n = copy_option_part(&p, lead_end, COM_MAX_LEN, ","); if (end_comment_pending == -1) // we can set it now end_comment_pending = lead_end[n - 1]; // If the end of the comment is in the same line, don't use // the comment leader. if (dir == FORWARD) { for (p = saved_line + lead_len; *p; ++p) if (STRNCMP(p, lead_end, n) == 0) { comment_end = p; lead_len = 0; break; } } // Doing "o" on a start of comment inserts the middle leader. if (lead_len > 0) { if (current_flag == COM_START) { lead_repl = lead_middle; lead_repl_len = (int)STRLEN(lead_middle); } // If we have hit RETURN immediately after the start // comment leader, then put a space after the middle // comment leader on the next line. if (!VIM_ISWHITE(saved_line[lead_len - 1]) && ((p_extra != NULL && (int)curwin->w_cursor.col == lead_len) || (p_extra == NULL && saved_line[lead_len] == NUL) || require_blank)) extra_space = TRUE; } break; } if (*p == COM_END) { // Doing "o" on the end of a comment does not insert leader. // Remember where the end is, might want to use it to find the // start (for C-comments). if (dir == FORWARD) { comment_end = skipwhite(saved_line); lead_len = 0; break; } // Doing "O" on the end of a comment inserts the middle leader. // Find the string for the middle leader, searching backwards. while (p > curbuf->b_p_com && *p != ',') --p; for (lead_repl = p; lead_repl > curbuf->b_p_com && lead_repl[-1] != ':'; --lead_repl) ; lead_repl_len = (int)(p - lead_repl); // We can probably always add an extra space when doing "O" on // the comment-end extra_space = TRUE; // Check whether we allow automatic ending of comments for (p2 = p; *p2 && *p2 != ':'; p2++) { if (*p2 == COM_AUTO_END) end_comment_pending = -1; // means we want to set it } if (end_comment_pending == -1) { // Find last character in end-comment string while (*p2 && *p2 != ',') p2++; end_comment_pending = p2[-1]; } break; } if (*p == COM_FIRST) { // Comment leader for first line only: Don't repeat leader // when using "O", blank out leader when using "o". if (dir == BACKWARD) lead_len = 0; else { lead_repl = (char_u *)""; lead_repl_len = 0; } break; } } if (lead_len) { // allocate buffer (may concatenate p_extra later) leader = alloc(lead_len + lead_repl_len + extra_space + extra_len + (second_line_indent > 0 ? second_line_indent : 0) + 1); allocated = leader; // remember to free it later if (leader == NULL) lead_len = 0; else { vim_strncpy(leader, saved_line, lead_len); // Replace leader with lead_repl, right or left adjusted if (lead_repl != NULL) { int c = 0; int off = 0; for (p = lead_flags; *p != NUL && *p != ':'; ) { if (*p == COM_RIGHT || *p == COM_LEFT) c = *p++; else if (VIM_ISDIGIT(*p) || *p == '-') off = getdigits(&p); else ++p; } if (c == COM_RIGHT) // right adjusted leader { // find last non-white in the leader to line up with for (p = leader + lead_len - 1; p > leader && VIM_ISWHITE(*p); --p) ; ++p; // Compute the length of the replaced characters in // screen characters, not bytes. { int repl_size = vim_strnsize(lead_repl, lead_repl_len); int old_size = 0; char_u *endp = p; int l; while (old_size < repl_size && p > leader) { MB_PTR_BACK(leader, p); old_size += ptr2cells(p); } l = lead_repl_len - (int)(endp - p); if (l != 0) mch_memmove(endp + l, endp, (size_t)((leader + lead_len) - endp)); lead_len += l; } mch_memmove(p, lead_repl, (size_t)lead_repl_len); if (p + lead_repl_len > leader + lead_len) p[lead_repl_len] = NUL; // blank-out any other chars from the old leader. while (--p >= leader) { int l = mb_head_off(leader, p); if (l > 1) { p -= l; if (ptr2cells(p) > 1) { p[1] = ' '; --l; } mch_memmove(p + 1, p + l + 1, (size_t)((leader + lead_len) - (p + l + 1))); lead_len -= l; *p = ' '; } else if (!VIM_ISWHITE(*p)) *p = ' '; } } else // left adjusted leader { p = skipwhite(leader); // Compute the length of the replaced characters in // screen characters, not bytes. Move the part that is // not to be overwritten. { int repl_size = vim_strnsize(lead_repl, lead_repl_len); int i; int l; for (i = 0; i < lead_len && p[i] != NUL; i += l) { l = (*mb_ptr2len)(p + i); if (vim_strnsize(p, i + l) > repl_size) break; } if (i != lead_repl_len) { mch_memmove(p + lead_repl_len, p + i, (size_t)(lead_len - i - (p - leader))); lead_len += lead_repl_len - i; } } mch_memmove(p, lead_repl, (size_t)lead_repl_len); // Replace any remaining non-white chars in the old // leader by spaces. Keep Tabs, the indent must // remain the same. for (p += lead_repl_len; p < leader + lead_len; ++p) if (!VIM_ISWHITE(*p)) { // Don't put a space before a TAB. if (p + 1 < leader + lead_len && p[1] == TAB) { --lead_len; mch_memmove(p, p + 1, (leader + lead_len) - p); } else { int l = (*mb_ptr2len)(p); if (l > 1) { if (ptr2cells(p) > 1) { // Replace a double-wide char with // two spaces --l; *p++ = ' '; } mch_memmove(p + 1, p + l, (leader + lead_len) - p); lead_len -= l - 1; } *p = ' '; } } *p = NUL; } // Recompute the indent, it may have changed. if (curbuf->b_p_ai #ifdef FEAT_SMARTINDENT || do_si #endif ) #ifdef FEAT_VARTABS newindent = get_indent_str_vtab(leader, curbuf->b_p_ts, curbuf->b_p_vts_array, FALSE); #else newindent = get_indent_str(leader, (int)curbuf->b_p_ts, FALSE); #endif // Add the indent offset if (newindent + off < 0) { off = -newindent; newindent = 0; } else newindent += off; // Correct trailing spaces for the shift, so that // alignment remains equal. while (off > 0 && lead_len > 0 && leader[lead_len - 1] == ' ') { // Don't do it when there is a tab before the space if (vim_strchr(skipwhite(leader), '\t') != NULL) break; --lead_len; --off; } // If the leader ends in white space, don't add an // extra space if (lead_len > 0 && VIM_ISWHITE(leader[lead_len - 1])) extra_space = FALSE; leader[lead_len] = NUL; } if (extra_space) { leader[lead_len++] = ' '; leader[lead_len] = NUL; } newcol = lead_len; // if a new indent will be set below, remove the indent that // is in the comment leader if (newindent #ifdef FEAT_SMARTINDENT || did_si #endif ) { while (lead_len && VIM_ISWHITE(*leader)) { --lead_len; --newcol; ++leader; } } } #ifdef FEAT_SMARTINDENT did_si = can_si = FALSE; #endif } else if (comment_end != NULL) { // We have finished a comment, so we don't use the leader. // If this was a C-comment and 'ai' or 'si' is set do a normal // indent to align with the line containing the start of the // comment. if (comment_end[0] == '*' && comment_end[1] == '/' && (curbuf->b_p_ai #ifdef FEAT_SMARTINDENT || do_si #endif )) { old_cursor = curwin->w_cursor; curwin->w_cursor.col = (colnr_T)(comment_end - saved_line); if ((pos = findmatch(NULL, NUL)) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); } curwin->w_cursor = old_cursor; } } } #endif // (State == INSERT || State == REPLACE), only when dir == FORWARD if (p_extra != NULL) { *p_extra = saved_char; // restore char that NUL replaced // When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first // non-blank. // // When in REPLACE mode, put the deleted blanks on the replace stack, // preceded by a NUL, so they can be put back when a BS is entered. if (REPLACE_NORMAL(State)) replace_push(NUL); /* end of extra blanks */ if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES)) { while ((*p_extra == ' ' || *p_extra == '\t') && (!enc_utf8 || !utf_iscomposing(utf_ptr2char(p_extra + 1)))) { if (REPLACE_NORMAL(State)) replace_push(*p_extra); ++p_extra; ++less_cols_off; } } // columns for marks adjusted for removed columns less_cols = (int)(p_extra - saved_line); } if (p_extra == NULL) p_extra = (char_u *)""; // append empty line #ifdef FEAT_COMMENTS // concatenate leader and p_extra, if there is a leader if (lead_len) { if (flags & OPENLINE_COM_LIST && second_line_indent > 0) { int i; int padding = second_line_indent - (newindent + (int)STRLEN(leader)); // Here whitespace is inserted after the comment char. // Below, set_indent(newindent, SIN_INSERT) will insert the // whitespace needed before the comment char. for (i = 0; i < padding; i++) { STRCAT(leader, " "); less_cols--; newcol++; } } STRCAT(leader, p_extra); p_extra = leader; did_ai = TRUE; // So truncating blanks works with comments less_cols -= lead_len; } else end_comment_pending = NUL; // turns out there was no leader #endif old_cursor = curwin->w_cursor; if (dir == BACKWARD) --curwin->w_cursor.lnum; if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count) { if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE) == FAIL) goto theend; // Postpone calling changed_lines(), because it would mess up folding // with markers. // Skip mark_adjust when adding a line after the last one, there can't // be marks there. But still needed in diff mode. if (curwin->w_cursor.lnum + 1 < curbuf->b_ml.ml_line_count #ifdef FEAT_DIFF || curwin->w_p_diff #endif ) mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L); did_append = TRUE; #ifdef FEAT_TEXT_PROP if ((State & INSERT) && !(State & VREPLACE_FLAG)) // properties after the split move to the next line adjust_props_for_split(curwin->w_cursor.lnum, curwin->w_cursor.lnum, curwin->w_cursor.col + 1, 0); #endif } else { // In VREPLACE mode we are starting to replace the next line. curwin->w_cursor.lnum++; if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed) { // In case we NL to a new line, BS to the previous one, and NL // again, we don't want to save the new line for undo twice. (void)u_save_cursor(); /* errors are ignored! */ vr_lines_changed++; } ml_replace(curwin->w_cursor.lnum, p_extra, TRUE); changed_bytes(curwin->w_cursor.lnum, 0); curwin->w_cursor.lnum--; did_append = FALSE; } if (newindent #ifdef FEAT_SMARTINDENT || did_si #endif ) { ++curwin->w_cursor.lnum; #ifdef FEAT_SMARTINDENT if (did_si) { int sw = (int)get_sw_value(curbuf); if (p_sr) newindent -= newindent % sw; newindent += sw; } #endif // Copy the indent if (curbuf->b_p_ci) { (void)copy_indent(newindent, saved_line); // Set the 'preserveindent' option so that any further screwing // with the line doesn't entirely destroy our efforts to preserve // it. It gets restored at the function end. curbuf->b_p_pi = TRUE; } else (void)set_indent(newindent, SIN_INSERT); less_cols -= curwin->w_cursor.col; ai_col = curwin->w_cursor.col; // In REPLACE mode, for each character in the new indent, there must // be a NUL on the replace stack, for when it is deleted with BS if (REPLACE_NORMAL(State)) for (n = 0; n < (int)curwin->w_cursor.col; ++n) replace_push(NUL); newcol += curwin->w_cursor.col; #ifdef FEAT_SMARTINDENT if (no_si) did_si = FALSE; #endif } #ifdef FEAT_COMMENTS // In REPLACE mode, for each character in the extra leader, there must be // a NUL on the replace stack, for when it is deleted with BS. if (REPLACE_NORMAL(State)) while (lead_len-- > 0) replace_push(NUL); #endif curwin->w_cursor = old_cursor; if (dir == FORWARD) { if (trunc_line || (State & INSERT)) { // truncate current line at cursor saved_line[curwin->w_cursor.col] = NUL; // Remove trailing white space, unless OPENLINE_KEEPTRAIL used. if (trunc_line && !(flags & OPENLINE_KEEPTRAIL)) truncate_spaces(saved_line); ml_replace(curwin->w_cursor.lnum, saved_line, FALSE); saved_line = NULL; if (did_append) { changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col, curwin->w_cursor.lnum + 1, 1L); did_append = FALSE; // Move marks after the line break to the new line. if (flags & OPENLINE_MARKFIX) mark_col_adjust(curwin->w_cursor.lnum, curwin->w_cursor.col + less_cols_off, 1L, (long)-less_cols, 0); } else changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col); } // Put the cursor on the new line. Careful: the scrollup() above may // have moved w_cursor, we must use old_cursor. curwin->w_cursor.lnum = old_cursor.lnum + 1; } if (did_append) changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L); curwin->w_cursor.col = newcol; curwin->w_cursor.coladd = 0; #if defined(FEAT_LISP) || defined(FEAT_CINDENT) // In VREPLACE mode, we are handling the replace stack ourselves, so stop // fixthisline() from doing it (via change_indent()) by telling it we're in // normal INSERT mode. if (State & VREPLACE_FLAG) { vreplace_mode = State; // So we know to put things right later State = INSERT; } else vreplace_mode = 0; #endif #ifdef FEAT_LISP // May do lisp indenting. if (!p_paste # ifdef FEAT_COMMENTS && leader == NULL # endif && curbuf->b_p_lisp && curbuf->b_p_ai) { fixthisline(get_lisp_indent); ai_col = (colnr_T)getwhitecols_curline(); } #endif #ifdef FEAT_CINDENT // May do indenting after opening a new line. if (!p_paste && (curbuf->b_p_cin # ifdef FEAT_EVAL || *curbuf->b_p_inde != NUL # endif ) && in_cinkeys(dir == FORWARD ? KEY_OPEN_FORW : KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))) { do_c_expr_indent(); ai_col = (colnr_T)getwhitecols_curline(); } #endif #if defined(FEAT_LISP) || defined(FEAT_CINDENT) if (vreplace_mode != 0) State = vreplace_mode; #endif // Finally, VREPLACE gets the stuff on the new line, then puts back the // original line, and inserts the new stuff char by char, pushing old stuff // onto the replace stack (via ins_char()). if (State & VREPLACE_FLAG) { // Put new line in p_extra p_extra = vim_strsave(ml_get_curline()); if (p_extra == NULL) goto theend; // Put back original line ml_replace(curwin->w_cursor.lnum, next_line, FALSE); // Insert new stuff into line again curwin->w_cursor.col = 0; curwin->w_cursor.coladd = 0; ins_bytes(p_extra); // will call changed_bytes() vim_free(p_extra); next_line = NULL; } retval = OK; // success! theend: curbuf->b_p_pi = saved_pi; vim_free(saved_line); vim_free(next_line); vim_free(allocated); return retval; } /* * Delete from cursor to end of line. * Caller must have prepared for undo. * If "fixpos" is TRUE fix the cursor position when done. * * Return FAIL for failure, OK otherwise. */ int truncate_line(int fixpos) { char_u *newp; linenr_T lnum = curwin->w_cursor.lnum; colnr_T col = curwin->w_cursor.col; if (col == 0) newp = vim_strsave((char_u *)""); else newp = vim_strnsave(ml_get(lnum), col); if (newp == NULL) return FAIL; ml_replace(lnum, newp, FALSE); // mark the buffer as changed and prepare for displaying changed_bytes(lnum, curwin->w_cursor.col); // If "fixpos" is TRUE we don't want to end up positioned at the NUL. if (fixpos && curwin->w_cursor.col > 0) --curwin->w_cursor.col; return OK; } /* * Delete "nlines" lines at the cursor. * Saves the lines for undo first if "undo" is TRUE. */ void del_lines(long nlines, int undo) { long n; linenr_T first = curwin->w_cursor.lnum; if (nlines <= 0) return; // save the deleted lines for undo if (undo && u_savedel(first, nlines) == FAIL) return; for (n = 0; n < nlines; ) { if (curbuf->b_ml.ml_flags & ML_EMPTY) // nothing to delete break; ml_delete(first, TRUE); ++n; // If we delete the last line in the file, stop if (first > curbuf->b_ml.ml_line_count) break; } // Correct the cursor position before calling deleted_lines_mark(), it may // trigger a callback to display the cursor. curwin->w_cursor.col = 0; check_cursor_lnum(); // adjust marks, mark the buffer as changed and prepare for displaying deleted_lines_mark(first, n); }