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Diffstat (limited to 'src/clipboard.c')
| -rw-r--r-- | src/clipboard.c | 2224 |
1 files changed, 2224 insertions, 0 deletions
diff --git a/src/clipboard.c b/src/clipboard.c new file mode 100644 index 0000000..c263492 --- /dev/null +++ b/src/clipboard.c @@ -0,0 +1,2224 @@ +/* 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. + */ + +/* + * clipboard.c: Functions to handle the clipboard + */ + +#include "vim.h" + +#ifdef FEAT_CYGWIN_WIN32_CLIPBOARD +# define WIN32_LEAN_AND_MEAN +# include <windows.h> +# include "winclip.pro" +#endif + +// Functions for copying and pasting text between applications. +// This is always included in a GUI version, but may also be included when the +// clipboard and mouse is available to a terminal version such as xterm. +// Note: there are some more functions in ops.c that handle selection stuff. +// +// Also note that the majority of functions here deal with the X 'primary' +// (visible - for Visual mode use) selection, and only that. There are no +// versions of these for the 'clipboard' selection, as Visual mode has no use +// for them. + +#if defined(FEAT_CLIPBOARD) || defined(PROTO) + +/* + * Selection stuff using Visual mode, for cutting and pasting text to other + * windows. + */ + +/* + * Call this to initialise the clipboard. Pass it FALSE if the clipboard code + * is included, but the clipboard can not be used, or TRUE if the clipboard can + * be used. Eg unix may call this with FALSE, then call it again with TRUE if + * the GUI starts. + */ + void +clip_init(int can_use) +{ + Clipboard_T *cb; + + cb = &clip_star; + for (;;) + { + cb->available = can_use; + cb->owned = FALSE; + cb->start.lnum = 0; + cb->start.col = 0; + cb->end.lnum = 0; + cb->end.col = 0; + cb->state = SELECT_CLEARED; + + if (cb == &clip_plus) + break; + cb = &clip_plus; + } +} + +/* + * Check whether the VIsual area has changed, and if so try to become the owner + * of the selection, and free any old converted selection we may still have + * lying around. If the VIsual mode has ended, make a copy of what was + * selected so we can still give it to others. Will probably have to make sure + * this is called whenever VIsual mode is ended. + */ + void +clip_update_selection(Clipboard_T *clip) +{ + pos_T start, end; + + // If visual mode is only due to a redo command ("."), then ignore it + if (!redo_VIsual_busy && VIsual_active && (State & NORMAL)) + { + if (LT_POS(VIsual, curwin->w_cursor)) + { + start = VIsual; + end = curwin->w_cursor; + if (has_mbyte) + end.col += (*mb_ptr2len)(ml_get_cursor()) - 1; + } + else + { + start = curwin->w_cursor; + end = VIsual; + } + if (!EQUAL_POS(clip->start, start) + || !EQUAL_POS(clip->end, end) + || clip->vmode != VIsual_mode) + { + clip_clear_selection(clip); + clip->start = start; + clip->end = end; + clip->vmode = VIsual_mode; + clip_free_selection(clip); + clip_own_selection(clip); + clip_gen_set_selection(clip); + } + } +} + + static int +clip_gen_own_selection(Clipboard_T *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + return clip_mch_own_selection(cbd); + else +# endif + return clip_xterm_own_selection(cbd); +#else + return clip_mch_own_selection(cbd); +#endif +} + + void +clip_own_selection(Clipboard_T *cbd) +{ + /* + * Also want to check somehow that we are reading from the keyboard rather + * than a mapping etc. + */ +#ifdef FEAT_X11 + // Always own the selection, we might have lost it without being + // notified, e.g. during a ":sh" command. + if (cbd->available) + { + int was_owned = cbd->owned; + + cbd->owned = (clip_gen_own_selection(cbd) == OK); + if (!was_owned && (cbd == &clip_star || cbd == &clip_plus)) + { + // May have to show a different kind of highlighting for the + // selected area. There is no specific redraw command for this, + // just redraw all windows on the current buffer. + if (cbd->owned + && (get_real_state() == VISUAL + || get_real_state() == SELECTMODE) + && (cbd == &clip_star ? clip_isautosel_star() + : clip_isautosel_plus()) + && HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)) + redraw_curbuf_later(INVERTED_ALL); + } + } +#else + // Only own the clipboard when we didn't own it yet. + if (!cbd->owned && cbd->available) + cbd->owned = (clip_gen_own_selection(cbd) == OK); +#endif +} + + static void +clip_gen_lose_selection(Clipboard_T *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_lose_selection(cbd); + else +# endif + clip_xterm_lose_selection(cbd); +#else + clip_mch_lose_selection(cbd); +#endif +} + + void +clip_lose_selection(Clipboard_T *cbd) +{ +#ifdef FEAT_X11 + int was_owned = cbd->owned; +#endif + int visual_selection = FALSE; + + if (cbd == &clip_star || cbd == &clip_plus) + visual_selection = TRUE; + + clip_free_selection(cbd); + cbd->owned = FALSE; + if (visual_selection) + clip_clear_selection(cbd); + clip_gen_lose_selection(cbd); +#ifdef FEAT_X11 + if (visual_selection) + { + // May have to show a different kind of highlighting for the selected + // area. There is no specific redraw command for this, just redraw all + // windows on the current buffer. + if (was_owned + && (get_real_state() == VISUAL + || get_real_state() == SELECTMODE) + && (cbd == &clip_star ? + clip_isautosel_star() : clip_isautosel_plus()) + && HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)) + { + update_curbuf(INVERTED_ALL); + setcursor(); + cursor_on(); + out_flush_cursor(TRUE, FALSE); + } + } +#endif +} + + static void +clip_copy_selection(Clipboard_T *clip) +{ + if (VIsual_active && (State & NORMAL) && clip->available) + { + clip_update_selection(clip); + clip_free_selection(clip); + clip_own_selection(clip); + if (clip->owned) + clip_get_selection(clip); + clip_gen_set_selection(clip); + } +} + +/* + * Save and restore clip_unnamed before doing possibly many changes. This + * prevents accessing the clipboard very often which might slow down Vim + * considerably. + */ +static int global_change_count = 0; // if set, inside a start_global_changes +static int clipboard_needs_update = FALSE; // clipboard needs to be updated +static int clip_did_set_selection = TRUE; + +/* + * Save clip_unnamed and reset it. + */ + void +start_global_changes(void) +{ + if (++global_change_count > 1) + return; + clip_unnamed_saved = clip_unnamed; + clipboard_needs_update = FALSE; + + if (clip_did_set_selection) + { + clip_unnamed = 0; + clip_did_set_selection = FALSE; + } +} + +/* + * Return TRUE if setting the clipboard was postponed, it already contains the + * right text. + */ + static int +is_clipboard_needs_update() +{ + return clipboard_needs_update; +} + +/* + * Restore clip_unnamed and set the selection when needed. + */ + void +end_global_changes(void) +{ + if (--global_change_count > 0) + // recursive + return; + if (!clip_did_set_selection) + { + clip_did_set_selection = TRUE; + clip_unnamed = clip_unnamed_saved; + clip_unnamed_saved = 0; + if (clipboard_needs_update) + { + // only store something in the clipboard, + // if we have yanked anything to it + if (clip_unnamed & CLIP_UNNAMED) + { + clip_own_selection(&clip_star); + clip_gen_set_selection(&clip_star); + } + if (clip_unnamed & CLIP_UNNAMED_PLUS) + { + clip_own_selection(&clip_plus); + clip_gen_set_selection(&clip_plus); + } + } + } + clipboard_needs_update = FALSE; +} + +/* + * Called when Visual mode is ended: update the selection. + */ + void +clip_auto_select(void) +{ + if (clip_isautosel_star()) + clip_copy_selection(&clip_star); + if (clip_isautosel_plus()) + clip_copy_selection(&clip_plus); +} + +/* + * Return TRUE if automatic selection of Visual area is desired for the * + * register. + */ + int +clip_isautosel_star(void) +{ + return ( +#ifdef FEAT_GUI + gui.in_use ? (vim_strchr(p_go, GO_ASEL) != NULL) : +#endif + clip_autoselect_star); +} + +/* + * Return TRUE if automatic selection of Visual area is desired for the + + * register. + */ + int +clip_isautosel_plus(void) +{ + return ( +#ifdef FEAT_GUI + gui.in_use ? (vim_strchr(p_go, GO_ASELPLUS) != NULL) : +#endif + clip_autoselect_plus); +} + + +/* + * Stuff for general mouse selection, without using Visual mode. + */ + +/* + * Compare two screen positions ala strcmp() + */ + static int +clip_compare_pos( + int row1, + int col1, + int row2, + int col2) +{ + if (row1 > row2) return(1); + if (row1 < row2) return(-1); + if (col1 > col2) return(1); + if (col1 < col2) return(-1); + return(0); +} + +// "how" flags for clip_invert_area() +#define CLIP_CLEAR 1 +#define CLIP_SET 2 +#define CLIP_TOGGLE 3 + +/* + * Invert or un-invert a rectangle of the screen. + * "invert" is true if the result is inverted. + */ + static void +clip_invert_rectangle( + Clipboard_T *cbd UNUSED, + int row_arg, + int col_arg, + int height_arg, + int width_arg, + int invert) +{ + int row = row_arg; + int col = col_arg; + int height = height_arg; + int width = width_arg; + +#ifdef FEAT_PROP_POPUP + // this goes on top of all popup windows + screen_zindex = CLIP_ZINDEX; + + if (col < cbd->min_col) + { + width -= cbd->min_col - col; + col = cbd->min_col; + } + if (width > cbd->max_col - col) + width = cbd->max_col - col; + if (row < cbd->min_row) + { + height -= cbd->min_row - row; + row = cbd->min_row; + } + if (height > cbd->max_row - row + 1) + height = cbd->max_row - row + 1; +#endif +#ifdef FEAT_GUI + if (gui.in_use) + gui_mch_invert_rectangle(row, col, height, width); + else +#endif + screen_draw_rectangle(row, col, height, width, invert); +#ifdef FEAT_PROP_POPUP + screen_zindex = 0; +#endif +} + +/* + * Invert a region of the display between a starting and ending row and column + * Values for "how": + * CLIP_CLEAR: undo inversion + * CLIP_SET: set inversion + * CLIP_TOGGLE: set inversion if pos1 < pos2, undo inversion otherwise. + * 0: invert (GUI only). + */ + static void +clip_invert_area( + Clipboard_T *cbd, + int row1, + int col1, + int row2, + int col2, + int how) +{ + int invert = FALSE; + int max_col; + +#ifdef FEAT_PROP_POPUP + max_col = cbd->max_col - 1; +#else + max_col = Columns - 1; +#endif + + if (how == CLIP_SET) + invert = TRUE; + + // Swap the from and to positions so the from is always before + if (clip_compare_pos(row1, col1, row2, col2) > 0) + { + int tmp_row, tmp_col; + + tmp_row = row1; + tmp_col = col1; + row1 = row2; + col1 = col2; + row2 = tmp_row; + col2 = tmp_col; + } + else if (how == CLIP_TOGGLE) + invert = TRUE; + + // If all on the same line, do it the easy way + if (row1 == row2) + { + clip_invert_rectangle(cbd, row1, col1, 1, col2 - col1, invert); + } + else + { + // Handle a piece of the first line + if (col1 > 0) + { + clip_invert_rectangle(cbd, row1, col1, 1, + (int)Columns - col1, invert); + row1++; + } + + // Handle a piece of the last line + if (col2 < max_col) + { + clip_invert_rectangle(cbd, row2, 0, 1, col2, invert); + row2--; + } + + // Handle the rectangle that's left + if (row2 >= row1) + clip_invert_rectangle(cbd, row1, 0, row2 - row1 + 1, + (int)Columns, invert); + } +} + +/* + * Start, continue or end a modeless selection. Used when editing the + * command-line, in the cmdline window and when the mouse is in a popup window. + */ + void +clip_modeless(int button, int is_click, int is_drag) +{ + int repeat; + + repeat = ((clip_star.mode == SELECT_MODE_CHAR + || clip_star.mode == SELECT_MODE_LINE) + && (mod_mask & MOD_MASK_2CLICK)) + || (clip_star.mode == SELECT_MODE_WORD + && (mod_mask & MOD_MASK_3CLICK)); + if (is_click && button == MOUSE_RIGHT) + { + // Right mouse button: If there was no selection, start one. + // Otherwise extend the existing selection. + if (clip_star.state == SELECT_CLEARED) + clip_start_selection(mouse_col, mouse_row, FALSE); + clip_process_selection(button, mouse_col, mouse_row, repeat); + } + else if (is_click) + clip_start_selection(mouse_col, mouse_row, repeat); + else if (is_drag) + { + // Don't try extending a selection if there isn't one. Happens when + // button-down is in the cmdline and them moving mouse upwards. + if (clip_star.state != SELECT_CLEARED) + clip_process_selection(button, mouse_col, mouse_row, repeat); + } + else // release + clip_process_selection(MOUSE_RELEASE, mouse_col, mouse_row, FALSE); +} + +/* + * Update the currently selected region by adding and/or subtracting from the + * beginning or end and inverting the changed area(s). + */ + static void +clip_update_modeless_selection( + Clipboard_T *cb, + int row1, + int col1, + int row2, + int col2) +{ + // See if we changed at the beginning of the selection + if (row1 != cb->start.lnum || col1 != (int)cb->start.col) + { + clip_invert_area(cb, row1, col1, (int)cb->start.lnum, cb->start.col, + CLIP_TOGGLE); + cb->start.lnum = row1; + cb->start.col = col1; + } + + // See if we changed at the end of the selection + if (row2 != cb->end.lnum || col2 != (int)cb->end.col) + { + clip_invert_area(cb, (int)cb->end.lnum, cb->end.col, row2, col2, + CLIP_TOGGLE); + cb->end.lnum = row2; + cb->end.col = col2; + } +} + +/* + * Find the starting and ending positions of the word at the given row and + * column. Only white-separated words are recognized here. + */ +#define CHAR_CLASS(c) (c <= ' ' ? ' ' : vim_iswordc(c)) + + static void +clip_get_word_boundaries(Clipboard_T *cb, int row, int col) +{ + int start_class; + int temp_col; + char_u *p; + int mboff; + + if (row >= screen_Rows || col >= screen_Columns || ScreenLines == NULL) + return; + + p = ScreenLines + LineOffset[row]; + // Correct for starting in the right halve of a double-wide char + if (enc_dbcs != 0) + col -= dbcs_screen_head_off(p, p + col); + else if (enc_utf8 && p[col] == 0) + --col; + start_class = CHAR_CLASS(p[col]); + + temp_col = col; + for ( ; temp_col > 0; temp_col--) + if (enc_dbcs != 0 + && (mboff = dbcs_screen_head_off(p, p + temp_col - 1)) > 0) + temp_col -= mboff; + else if (CHAR_CLASS(p[temp_col - 1]) != start_class + && !(enc_utf8 && p[temp_col - 1] == 0)) + break; + cb->word_start_col = temp_col; + + temp_col = col; + for ( ; temp_col < screen_Columns; temp_col++) + if (enc_dbcs != 0 && dbcs_ptr2cells(p + temp_col) == 2) + ++temp_col; + else if (CHAR_CLASS(p[temp_col]) != start_class + && !(enc_utf8 && p[temp_col] == 0)) + break; + cb->word_end_col = temp_col; +} + +/* + * Find the column position for the last non-whitespace character on the given + * line at or before start_col. + */ + static int +clip_get_line_end(Clipboard_T *cbd UNUSED, int row) +{ + int i; + + if (row >= screen_Rows || ScreenLines == NULL) + return 0; + for (i = +#ifdef FEAT_PROP_POPUP + cbd->max_col; +#else + screen_Columns; +#endif + i > 0; i--) + if (ScreenLines[LineOffset[row] + i - 1] != ' ') + break; + return i; +} + +/* + * Start the selection + */ + void +clip_start_selection(int col, int row, int repeated_click) +{ + Clipboard_T *cb = &clip_star; +#ifdef FEAT_PROP_POPUP + win_T *wp; + int row_cp = row; + int col_cp = col; + + wp = mouse_find_win(&row_cp, &col_cp, FIND_POPUP); + if (wp != NULL && WIN_IS_POPUP(wp) + && popup_is_in_scrollbar(wp, row_cp, col_cp)) + // click or double click in scrollbar does not start a selection + return; +#endif + + if (cb->state == SELECT_DONE) + clip_clear_selection(cb); + + row = check_row(row); + col = check_col(col); + col = mb_fix_col(col, row); + + cb->start.lnum = row; + cb->start.col = col; + cb->end = cb->start; + cb->origin_row = (short_u)cb->start.lnum; + cb->state = SELECT_IN_PROGRESS; +#ifdef FEAT_PROP_POPUP + if (wp != NULL && WIN_IS_POPUP(wp)) + { + // Click in a popup window restricts selection to that window, + // excluding the border. + cb->min_col = wp->w_wincol + wp->w_popup_border[3]; + cb->max_col = wp->w_wincol + popup_width(wp) + - wp->w_popup_border[1] - wp->w_has_scrollbar; + if (cb->max_col > screen_Columns) + cb->max_col = screen_Columns; + cb->min_row = wp->w_winrow + wp->w_popup_border[0]; + cb->max_row = wp->w_winrow + popup_height(wp) - 1 + - wp->w_popup_border[2]; + } + else + { + cb->min_col = 0; + cb->max_col = screen_Columns; + cb->min_row = 0; + cb->max_row = screen_Rows; + } +#endif + + if (repeated_click) + { + if (++cb->mode > SELECT_MODE_LINE) + cb->mode = SELECT_MODE_CHAR; + } + else + cb->mode = SELECT_MODE_CHAR; + +#ifdef FEAT_GUI + // clear the cursor until the selection is made + if (gui.in_use) + gui_undraw_cursor(); +#endif + + switch (cb->mode) + { + case SELECT_MODE_CHAR: + cb->origin_start_col = cb->start.col; + cb->word_end_col = clip_get_line_end(cb, (int)cb->start.lnum); + break; + + case SELECT_MODE_WORD: + clip_get_word_boundaries(cb, (int)cb->start.lnum, cb->start.col); + cb->origin_start_col = cb->word_start_col; + cb->origin_end_col = cb->word_end_col; + + clip_invert_area(cb, (int)cb->start.lnum, cb->word_start_col, + (int)cb->end.lnum, cb->word_end_col, CLIP_SET); + cb->start.col = cb->word_start_col; + cb->end.col = cb->word_end_col; + break; + + case SELECT_MODE_LINE: + clip_invert_area(cb, (int)cb->start.lnum, 0, (int)cb->start.lnum, + (int)Columns, CLIP_SET); + cb->start.col = 0; + cb->end.col = Columns; + break; + } + + cb->prev = cb->start; + +#ifdef DEBUG_SELECTION + printf("Selection started at (%ld,%d)\n", cb->start.lnum, cb->start.col); +#endif +} + +/* + * Continue processing the selection + */ + void +clip_process_selection( + int button, + int col, + int row, + int_u repeated_click) +{ + Clipboard_T *cb = &clip_star; + int diff; + int slen = 1; // cursor shape width + + if (button == MOUSE_RELEASE) + { + if (cb->state != SELECT_IN_PROGRESS) + return; + + // Check to make sure we have something selected + if (cb->start.lnum == cb->end.lnum && cb->start.col == cb->end.col) + { +#ifdef FEAT_GUI + if (gui.in_use) + gui_update_cursor(FALSE, FALSE); +#endif + cb->state = SELECT_CLEARED; + return; + } + +#ifdef DEBUG_SELECTION + printf("Selection ended: (%ld,%d) to (%ld,%d)\n", cb->start.lnum, + cb->start.col, cb->end.lnum, cb->end.col); +#endif + if (clip_isautosel_star() + || ( +#ifdef FEAT_GUI + gui.in_use ? (vim_strchr(p_go, GO_ASELML) != NULL) : +#endif + clip_autoselectml)) + clip_copy_modeless_selection(FALSE); +#ifdef FEAT_GUI + if (gui.in_use) + gui_update_cursor(FALSE, FALSE); +#endif + + cb->state = SELECT_DONE; + return; + } + + row = check_row(row); + col = check_col(col); + col = mb_fix_col(col, row); + + if (col == (int)cb->prev.col && row == cb->prev.lnum && !repeated_click) + return; + + /* + * When extending the selection with the right mouse button, swap the + * start and end if the position is before half the selection + */ + if (cb->state == SELECT_DONE && button == MOUSE_RIGHT) + { + /* + * If the click is before the start, or the click is inside the + * selection and the start is the closest side, set the origin to the + * end of the selection. + */ + if (clip_compare_pos(row, col, (int)cb->start.lnum, cb->start.col) < 0 + || (clip_compare_pos(row, col, + (int)cb->end.lnum, cb->end.col) < 0 + && (((cb->start.lnum == cb->end.lnum + && cb->end.col - col > col - cb->start.col)) + || ((diff = (cb->end.lnum - row) - + (row - cb->start.lnum)) > 0 + || (diff == 0 && col < (int)(cb->start.col + + cb->end.col) / 2))))) + { + cb->origin_row = (short_u)cb->end.lnum; + cb->origin_start_col = cb->end.col - 1; + cb->origin_end_col = cb->end.col; + } + else + { + cb->origin_row = (short_u)cb->start.lnum; + cb->origin_start_col = cb->start.col; + cb->origin_end_col = cb->start.col; + } + if (cb->mode == SELECT_MODE_WORD && !repeated_click) + cb->mode = SELECT_MODE_CHAR; + } + + // set state, for when using the right mouse button + cb->state = SELECT_IN_PROGRESS; + +#ifdef DEBUG_SELECTION + printf("Selection extending to (%d,%d)\n", row, col); +#endif + + if (repeated_click && ++cb->mode > SELECT_MODE_LINE) + cb->mode = SELECT_MODE_CHAR; + + switch (cb->mode) + { + case SELECT_MODE_CHAR: + // If we're on a different line, find where the line ends + if (row != cb->prev.lnum) + cb->word_end_col = clip_get_line_end(cb, row); + + // See if we are before or after the origin of the selection + if (clip_compare_pos(row, col, cb->origin_row, + cb->origin_start_col) >= 0) + { + if (col >= (int)cb->word_end_col) + clip_update_modeless_selection(cb, cb->origin_row, + cb->origin_start_col, row, (int)Columns); + else + { + if (has_mbyte && mb_lefthalve(row, col)) + slen = 2; + clip_update_modeless_selection(cb, cb->origin_row, + cb->origin_start_col, row, col + slen); + } + } + else + { + if (has_mbyte + && mb_lefthalve(cb->origin_row, cb->origin_start_col)) + slen = 2; + if (col >= (int)cb->word_end_col) + clip_update_modeless_selection(cb, row, cb->word_end_col, + cb->origin_row, cb->origin_start_col + slen); + else + clip_update_modeless_selection(cb, row, col, + cb->origin_row, cb->origin_start_col + slen); + } + break; + + case SELECT_MODE_WORD: + // If we are still within the same word, do nothing + if (row == cb->prev.lnum && col >= (int)cb->word_start_col + && col < (int)cb->word_end_col && !repeated_click) + return; + + // Get new word boundaries + clip_get_word_boundaries(cb, row, col); + + // Handle being after the origin point of selection + if (clip_compare_pos(row, col, cb->origin_row, + cb->origin_start_col) >= 0) + clip_update_modeless_selection(cb, cb->origin_row, + cb->origin_start_col, row, cb->word_end_col); + else + clip_update_modeless_selection(cb, row, cb->word_start_col, + cb->origin_row, cb->origin_end_col); + break; + + case SELECT_MODE_LINE: + if (row == cb->prev.lnum && !repeated_click) + return; + + if (clip_compare_pos(row, col, cb->origin_row, + cb->origin_start_col) >= 0) + clip_update_modeless_selection(cb, cb->origin_row, 0, row, + (int)Columns); + else + clip_update_modeless_selection(cb, row, 0, cb->origin_row, + (int)Columns); + break; + } + + cb->prev.lnum = row; + cb->prev.col = col; + +#ifdef DEBUG_SELECTION + printf("Selection is: (%ld,%d) to (%ld,%d)\n", cb->start.lnum, + cb->start.col, cb->end.lnum, cb->end.col); +#endif +} + +# if defined(FEAT_GUI) || defined(PROTO) +/* + * Redraw part of the selection if character at "row,col" is inside of it. + * Only used for the GUI. + */ + void +clip_may_redraw_selection(int row, int col, int len) +{ + int start = col; + int end = col + len; + + if (clip_star.state != SELECT_CLEARED + && row >= clip_star.start.lnum + && row <= clip_star.end.lnum) + { + if (row == clip_star.start.lnum && start < (int)clip_star.start.col) + start = clip_star.start.col; + if (row == clip_star.end.lnum && end > (int)clip_star.end.col) + end = clip_star.end.col; + if (end > start) + clip_invert_area(&clip_star, row, start, row, end, 0); + } +} +# endif + +/* + * Called from outside to clear selected region from the display + */ + void +clip_clear_selection(Clipboard_T *cbd) +{ + + if (cbd->state == SELECT_CLEARED) + return; + + clip_invert_area(cbd, (int)cbd->start.lnum, cbd->start.col, + (int)cbd->end.lnum, cbd->end.col, CLIP_CLEAR); + cbd->state = SELECT_CLEARED; +} + +/* + * Clear the selection if any lines from "row1" to "row2" are inside of it. + */ + void +clip_may_clear_selection(int row1, int row2) +{ + if (clip_star.state == SELECT_DONE + && row2 >= clip_star.start.lnum + && row1 <= clip_star.end.lnum) + clip_clear_selection(&clip_star); +} + +/* + * Called before the screen is scrolled up or down. Adjusts the line numbers + * of the selection. Call with big number when clearing the screen. + */ + void +clip_scroll_selection( + int rows) // negative for scroll down +{ + int lnum; + + if (clip_star.state == SELECT_CLEARED) + return; + + lnum = clip_star.start.lnum - rows; + if (lnum <= 0) + clip_star.start.lnum = 0; + else if (lnum >= screen_Rows) // scrolled off of the screen + clip_star.state = SELECT_CLEARED; + else + clip_star.start.lnum = lnum; + + lnum = clip_star.end.lnum - rows; + if (lnum < 0) // scrolled off of the screen + clip_star.state = SELECT_CLEARED; + else if (lnum >= screen_Rows) + clip_star.end.lnum = screen_Rows - 1; + else + clip_star.end.lnum = lnum; +} + +/* + * Copy the currently selected area into the '*' register so it will be + * available for pasting. + * When "both" is TRUE also copy to the '+' register. + */ + void +clip_copy_modeless_selection(int both UNUSED) +{ + char_u *buffer; + char_u *bufp; + int row; + int start_col; + int end_col; + int line_end_col; + int add_newline_flag = FALSE; + int len; + char_u *p; + int row1 = clip_star.start.lnum; + int col1 = clip_star.start.col; + int row2 = clip_star.end.lnum; + int col2 = clip_star.end.col; + + // Can't use ScreenLines unless initialized + if (ScreenLines == NULL) + return; + + /* + * Make sure row1 <= row2, and if row1 == row2 that col1 <= col2. + */ + if (row1 > row2) + { + row = row1; row1 = row2; row2 = row; + row = col1; col1 = col2; col2 = row; + } + else if (row1 == row2 && col1 > col2) + { + row = col1; col1 = col2; col2 = row; + } +#ifdef FEAT_PROP_POPUP + if (col1 < clip_star.min_col) + col1 = clip_star.min_col; + if (col2 > clip_star.max_col) + col2 = clip_star.max_col; + if (row1 > clip_star.max_row || row2 < clip_star.min_row) + return; + if (row1 < clip_star.min_row) + row1 = clip_star.min_row; + if (row2 > clip_star.max_row) + row2 = clip_star.max_row; +#endif + // correct starting point for being on right halve of double-wide char + p = ScreenLines + LineOffset[row1]; + if (enc_dbcs != 0) + col1 -= (*mb_head_off)(p, p + col1); + else if (enc_utf8 && p[col1] == 0) + --col1; + + // Create a temporary buffer for storing the text + len = (row2 - row1 + 1) * Columns + 1; + if (enc_dbcs != 0) + len *= 2; // max. 2 bytes per display cell + else if (enc_utf8) + len *= MB_MAXBYTES; + buffer = alloc(len); + if (buffer == NULL) // out of memory + return; + + // Process each row in the selection + for (bufp = buffer, row = row1; row <= row2; row++) + { + if (row == row1) + start_col = col1; + else +#ifdef FEAT_PROP_POPUP + start_col = clip_star.min_col; +#else + start_col = 0; +#endif + + if (row == row2) + end_col = col2; + else +#ifdef FEAT_PROP_POPUP + end_col = clip_star.max_col; +#else + end_col = Columns; +#endif + + line_end_col = clip_get_line_end(&clip_star, row); + + // See if we need to nuke some trailing whitespace + if (end_col >= +#ifdef FEAT_PROP_POPUP + clip_star.max_col +#else + Columns +#endif + && (row < row2 || end_col > line_end_col)) + { + // Get rid of trailing whitespace + end_col = line_end_col; + if (end_col < start_col) + end_col = start_col; + + // If the last line extended to the end, add an extra newline + if (row == row2) + add_newline_flag = TRUE; + } + + // If after the first row, we need to always add a newline + if (row > row1 && !LineWraps[row - 1]) + *bufp++ = NL; + + // Safetey check for in case resizing went wrong + if (row < screen_Rows && end_col <= screen_Columns) + { + if (enc_dbcs != 0) + { + int i; + + p = ScreenLines + LineOffset[row]; + for (i = start_col; i < end_col; ++i) + if (enc_dbcs == DBCS_JPNU && p[i] == 0x8e) + { + // single-width double-byte char + *bufp++ = 0x8e; + *bufp++ = ScreenLines2[LineOffset[row] + i]; + } + else + { + *bufp++ = p[i]; + if (MB_BYTE2LEN(p[i]) == 2) + *bufp++ = p[++i]; + } + } + else if (enc_utf8) + { + int off; + int i; + int ci; + + off = LineOffset[row]; + for (i = start_col; i < end_col; ++i) + { + // The base character is either in ScreenLinesUC[] or + // ScreenLines[]. + if (ScreenLinesUC[off + i] == 0) + *bufp++ = ScreenLines[off + i]; + else + { + bufp += utf_char2bytes(ScreenLinesUC[off + i], bufp); + for (ci = 0; ci < Screen_mco; ++ci) + { + // Add a composing character. + if (ScreenLinesC[ci][off + i] == 0) + break; + bufp += utf_char2bytes(ScreenLinesC[ci][off + i], + bufp); + } + } + // Skip right halve of double-wide character. + if (ScreenLines[off + i + 1] == 0) + ++i; + } + } + else + { + STRNCPY(bufp, ScreenLines + LineOffset[row] + start_col, + end_col - start_col); + bufp += end_col - start_col; + } + } + } + + // Add a newline at the end if the selection ended there + if (add_newline_flag) + *bufp++ = NL; + + // First cleanup any old selection and become the owner. + clip_free_selection(&clip_star); + clip_own_selection(&clip_star); + + // Yank the text into the '*' register. + clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_star); + + // Make the register contents available to the outside world. + clip_gen_set_selection(&clip_star); + +#ifdef FEAT_X11 + if (both) + { + // Do the same for the '+' register. + clip_free_selection(&clip_plus); + clip_own_selection(&clip_plus); + clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_plus); + clip_gen_set_selection(&clip_plus); + } +#endif + vim_free(buffer); +} + + void +clip_gen_set_selection(Clipboard_T *cbd) +{ + if (!clip_did_set_selection) + { + // Updating postponed, so that accessing the system clipboard won't + // hang Vim when accessing it many times (e.g. on a :g command). + if ((cbd == &clip_plus && (clip_unnamed_saved & CLIP_UNNAMED_PLUS)) + || (cbd == &clip_star && (clip_unnamed_saved & CLIP_UNNAMED))) + { + clipboard_needs_update = TRUE; + return; + } + } +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_set_selection(cbd); + else +# endif + clip_xterm_set_selection(cbd); +#else + clip_mch_set_selection(cbd); +#endif +} + + static void +clip_gen_request_selection(Clipboard_T *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_request_selection(cbd); + else +# endif + clip_xterm_request_selection(cbd); +#else + clip_mch_request_selection(cbd); +#endif +} + +#if (defined(FEAT_X11) && defined(FEAT_XCLIPBOARD) && defined(USE_SYSTEM)) \ + || defined(PROTO) + static int +clip_x11_owner_exists(Clipboard_T *cbd) +{ + return XGetSelectionOwner(X_DISPLAY, cbd->sel_atom) != None; +} +#endif + +#if (defined(FEAT_X11) && defined(USE_SYSTEM)) || defined(PROTO) + int +clip_gen_owner_exists(Clipboard_T *cbd UNUSED) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI_GTK + if (gui.in_use) + return clip_gtk_owner_exists(cbd); + else +# endif + return clip_x11_owner_exists(cbd); +#else + return TRUE; +#endif +} +#endif + +/* + * Extract the items in the 'clipboard' option and set global values. + * Return an error message or NULL for success. + */ + char * +check_clipboard_option(void) +{ + int new_unnamed = 0; + int new_autoselect_star = FALSE; + int new_autoselect_plus = FALSE; + int new_autoselectml = FALSE; + int new_html = FALSE; + regprog_T *new_exclude_prog = NULL; + char *errmsg = NULL; + char_u *p; + + for (p = p_cb; *p != NUL; ) + { + if (STRNCMP(p, "unnamed", 7) == 0 && (p[7] == ',' || p[7] == NUL)) + { + new_unnamed |= CLIP_UNNAMED; + p += 7; + } + else if (STRNCMP(p, "unnamedplus", 11) == 0 + && (p[11] == ',' || p[11] == NUL)) + { + new_unnamed |= CLIP_UNNAMED_PLUS; + p += 11; + } + else if (STRNCMP(p, "autoselect", 10) == 0 + && (p[10] == ',' || p[10] == NUL)) + { + new_autoselect_star = TRUE; + p += 10; + } + else if (STRNCMP(p, "autoselectplus", 14) == 0 + && (p[14] == ',' || p[14] == NUL)) + { + new_autoselect_plus = TRUE; + p += 14; + } + else if (STRNCMP(p, "autoselectml", 12) == 0 + && (p[12] == ',' || p[12] == NUL)) + { + new_autoselectml = TRUE; + p += 12; + } + else if (STRNCMP(p, "html", 4) == 0 && (p[4] == ',' || p[4] == NUL)) + { + new_html = TRUE; + p += 4; + } + else if (STRNCMP(p, "exclude:", 8) == 0 && new_exclude_prog == NULL) + { + p += 8; + new_exclude_prog = vim_regcomp(p, RE_MAGIC); + if (new_exclude_prog == NULL) + errmsg = e_invarg; + break; + } + else + { + errmsg = e_invarg; + break; + } + if (*p == ',') + ++p; + } + if (errmsg == NULL) + { + if (global_busy) + // clip_unnamed will be reset to clip_unnamed_saved + // at end_global_changes + clip_unnamed_saved = new_unnamed; + else + clip_unnamed = new_unnamed; + clip_autoselect_star = new_autoselect_star; + clip_autoselect_plus = new_autoselect_plus; + clip_autoselectml = new_autoselectml; + clip_html = new_html; + vim_regfree(clip_exclude_prog); + clip_exclude_prog = new_exclude_prog; +#ifdef FEAT_GUI_GTK + if (gui.in_use) + { + gui_gtk_set_selection_targets(); + gui_gtk_set_dnd_targets(); + } +#endif + } + else + vim_regfree(new_exclude_prog); + + return errmsg; +} + +/* + * Stuff for the X clipboard. Shared between VMS and Unix. + */ + +#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) || defined(PROTO) +# include <X11/Xatom.h> +# include <X11/Intrinsic.h> + +/* + * Open the application context (if it hasn't been opened yet). + * Used for Motif and Athena GUI and the xterm clipboard. + */ + void +open_app_context(void) +{ + if (app_context == NULL) + { + XtToolkitInitialize(); + app_context = XtCreateApplicationContext(); + } +} + +static Atom vim_atom; // Vim's own special selection format +static Atom vimenc_atom; // Vim's extended selection format +static Atom utf8_atom; +static Atom compound_text_atom; +static Atom text_atom; +static Atom targets_atom; +static Atom timestamp_atom; // Used to get a timestamp + + void +x11_setup_atoms(Display *dpy) +{ + vim_atom = XInternAtom(dpy, VIM_ATOM_NAME, False); + vimenc_atom = XInternAtom(dpy, VIMENC_ATOM_NAME,False); + utf8_atom = XInternAtom(dpy, "UTF8_STRING", False); + compound_text_atom = XInternAtom(dpy, "COMPOUND_TEXT", False); + text_atom = XInternAtom(dpy, "TEXT", False); + targets_atom = XInternAtom(dpy, "TARGETS", False); + clip_star.sel_atom = XA_PRIMARY; + clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD", False); + timestamp_atom = XInternAtom(dpy, "TIMESTAMP", False); +} + +/* + * X Selection stuff, for cutting and pasting text to other windows. + */ + + static Boolean +clip_x11_convert_selection_cb( + Widget w UNUSED, + Atom *sel_atom, + Atom *target, + Atom *type, + XtPointer *value, + long_u *length, + int *format) +{ + static char_u *save_result = NULL; + static long_u save_length = 0; + char_u *string; + int motion_type; + Clipboard_T *cbd; + int i; + + if (*sel_atom == clip_plus.sel_atom) + cbd = &clip_plus; + else + cbd = &clip_star; + + if (!cbd->owned) + return False; // Shouldn't ever happen + + // requestor wants to know what target types we support + if (*target == targets_atom) + { + static Atom array[7]; + + *value = (XtPointer)array; + i = 0; + array[i++] = targets_atom; + array[i++] = vimenc_atom; + array[i++] = vim_atom; + if (enc_utf8) + array[i++] = utf8_atom; + array[i++] = XA_STRING; + array[i++] = text_atom; + array[i++] = compound_text_atom; + + *type = XA_ATOM; + // This used to be: *format = sizeof(Atom) * 8; but that caused + // crashes on 64 bit machines. (Peter Derr) + *format = 32; + *length = i; + return True; + } + + if ( *target != XA_STRING + && *target != vimenc_atom + && (*target != utf8_atom || !enc_utf8) + && *target != vim_atom + && *target != text_atom + && *target != compound_text_atom) + return False; + + clip_get_selection(cbd); + motion_type = clip_convert_selection(&string, length, cbd); + if (motion_type < 0) + return False; + + // For our own format, the first byte contains the motion type + if (*target == vim_atom) + (*length)++; + + // Our own format with encoding: motion 'encoding' NUL text + if (*target == vimenc_atom) + *length += STRLEN(p_enc) + 2; + + if (save_length < *length || save_length / 2 >= *length) + *value = XtRealloc((char *)save_result, (Cardinal)*length + 1); + else + *value = save_result; + if (*value == NULL) + { + vim_free(string); + return False; + } + save_result = (char_u *)*value; + save_length = *length; + + if (*target == XA_STRING || (*target == utf8_atom && enc_utf8)) + { + mch_memmove(save_result, string, (size_t)(*length)); + *type = *target; + } + else if (*target == compound_text_atom || *target == text_atom) + { + XTextProperty text_prop; + char *string_nt = (char *)save_result; + int conv_result; + + // create NUL terminated string which XmbTextListToTextProperty wants + mch_memmove(string_nt, string, (size_t)*length); + string_nt[*length] = NUL; + conv_result = XmbTextListToTextProperty(X_DISPLAY, (char **)&string_nt, + 1, XCompoundTextStyle, &text_prop); + if (conv_result != Success) + { + vim_free(string); + return False; + } + *value = (XtPointer)(text_prop.value); // from plain text + *length = text_prop.nitems; + *type = compound_text_atom; + XtFree((char *)save_result); + save_result = (char_u *)*value; + save_length = *length; + } + else if (*target == vimenc_atom) + { + int l = STRLEN(p_enc); + + save_result[0] = motion_type; + STRCPY(save_result + 1, p_enc); + mch_memmove(save_result + l + 2, string, (size_t)(*length - l - 2)); + *type = vimenc_atom; + } + else + { + save_result[0] = motion_type; + mch_memmove(save_result + 1, string, (size_t)(*length - 1)); + *type = vim_atom; + } + *format = 8; // 8 bits per char + vim_free(string); + return True; +} + + static void +clip_x11_lose_ownership_cb(Widget w UNUSED, Atom *sel_atom) +{ + if (*sel_atom == clip_plus.sel_atom) + clip_lose_selection(&clip_plus); + else + clip_lose_selection(&clip_star); +} + + static void +clip_x11_notify_cb(Widget w UNUSED, Atom *sel_atom UNUSED, Atom *target UNUSED) +{ + // To prevent automatically freeing the selection value. +} + +/* + * Property callback to get a timestamp for XtOwnSelection. + */ + static void +clip_x11_timestamp_cb( + Widget w, + XtPointer n UNUSED, + XEvent *event, + Boolean *cont UNUSED) +{ + Atom actual_type; + int format; + unsigned long nitems, bytes_after; + unsigned char *prop=NULL; + XPropertyEvent *xproperty=&event->xproperty; + + // Must be a property notify, state can't be Delete (True), has to be + // one of the supported selection types. + if (event->type != PropertyNotify || xproperty->state + || (xproperty->atom != clip_star.sel_atom + && xproperty->atom != clip_plus.sel_atom)) + return; + + if (XGetWindowProperty(xproperty->display, xproperty->window, + xproperty->atom, 0, 0, False, timestamp_atom, &actual_type, &format, + &nitems, &bytes_after, &prop)) + return; + + if (prop) + XFree(prop); + + // Make sure the property type is "TIMESTAMP" and it's 32 bits. + if (actual_type != timestamp_atom || format != 32) + return; + + // Get the selection, using the event timestamp. + if (XtOwnSelection(w, xproperty->atom, xproperty->time, + clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb, + clip_x11_notify_cb) == OK) + { + // Set the "owned" flag now, there may have been a call to + // lose_ownership_cb in between. + if (xproperty->atom == clip_plus.sel_atom) + clip_plus.owned = TRUE; + else + clip_star.owned = TRUE; + } +} + + void +x11_setup_selection(Widget w) +{ + XtAddEventHandler(w, PropertyChangeMask, False, + /*(XtEventHandler)*/clip_x11_timestamp_cb, (XtPointer)NULL); +} + + static void +clip_x11_request_selection_cb( + Widget w UNUSED, + XtPointer success, + Atom *sel_atom, + Atom *type, + XtPointer value, + long_u *length, + int *format) +{ + int motion_type = MAUTO; + long_u len; + char_u *p; + char **text_list = NULL; + Clipboard_T *cbd; + char_u *tmpbuf = NULL; + + if (*sel_atom == clip_plus.sel_atom) + cbd = &clip_plus; + else + cbd = &clip_star; + + if (value == NULL || *length == 0) + { + clip_free_selection(cbd); // nothing received, clear register + *(int *)success = FALSE; + return; + } + p = (char_u *)value; + len = *length; + if (*type == vim_atom) + { + motion_type = *p++; + len--; + } + + else if (*type == vimenc_atom) + { + char_u *enc; + vimconv_T conv; + int convlen; + + motion_type = *p++; + --len; + + enc = p; + p += STRLEN(p) + 1; + len -= p - enc; + + // If the encoding of the text is different from 'encoding', attempt + // converting it. + conv.vc_type = CONV_NONE; + convert_setup(&conv, enc, p_enc); + if (conv.vc_type != CONV_NONE) + { + convlen = len; // Need to use an int here. + tmpbuf = string_convert(&conv, p, &convlen); + len = convlen; + if (tmpbuf != NULL) + p = tmpbuf; + convert_setup(&conv, NULL, NULL); + } + } + + else if (*type == compound_text_atom + || *type == utf8_atom + || (enc_dbcs != 0 && *type == text_atom)) + { + XTextProperty text_prop; + int n_text = 0; + int status; + + text_prop.value = (unsigned char *)value; + text_prop.encoding = *type; + text_prop.format = *format; + text_prop.nitems = len; +#if defined(X_HAVE_UTF8_STRING) + if (*type == utf8_atom) + status = Xutf8TextPropertyToTextList(X_DISPLAY, &text_prop, + &text_list, &n_text); + else +#endif + status = XmbTextPropertyToTextList(X_DISPLAY, &text_prop, + &text_list, &n_text); + if (status != Success || n_text < 1) + { + *(int *)success = FALSE; + return; + } + p = (char_u *)text_list[0]; + len = STRLEN(p); + } + clip_yank_selection(motion_type, p, (long)len, cbd); + + if (text_list != NULL) + XFreeStringList(text_list); + vim_free(tmpbuf); + XtFree((char *)value); + *(int *)success = TRUE; +} + + void +clip_x11_request_selection( + Widget myShell, + Display *dpy, + Clipboard_T *cbd) +{ + XEvent event; + Atom type; + static int success; + int i; + time_t start_time; + int timed_out = FALSE; + + for (i = 0; i < 6; i++) + { + switch (i) + { + case 0: type = vimenc_atom; break; + case 1: type = vim_atom; break; + case 2: type = utf8_atom; break; + case 3: type = compound_text_atom; break; + case 4: type = text_atom; break; + default: type = XA_STRING; + } + if (type == utf8_atom +# if defined(X_HAVE_UTF8_STRING) + && !enc_utf8 +# endif + ) + // Only request utf-8 when 'encoding' is utf8 and + // Xutf8TextPropertyToTextList is available. + continue; + success = MAYBE; + XtGetSelectionValue(myShell, cbd->sel_atom, type, + clip_x11_request_selection_cb, (XtPointer)&success, CurrentTime); + + // Make sure the request for the selection goes out before waiting for + // a response. + XFlush(dpy); + + /* + * Wait for result of selection request, otherwise if we type more + * characters, then they will appear before the one that requested the + * paste! Don't worry, we will catch up with any other events later. + */ + start_time = time(NULL); + while (success == MAYBE) + { + if (XCheckTypedEvent(dpy, PropertyNotify, &event) + || XCheckTypedEvent(dpy, SelectionNotify, &event) + || XCheckTypedEvent(dpy, SelectionRequest, &event)) + { + // This is where clip_x11_request_selection_cb() should be + // called. It may actually happen a bit later, so we loop + // until "success" changes. + // We may get a SelectionRequest here and if we don't handle + // it we hang. KDE klipper does this, for example. + // We need to handle a PropertyNotify for large selections. + XtDispatchEvent(&event); + continue; + } + + // Time out after 2 to 3 seconds to avoid that we hang when the + // other process doesn't respond. Note that the SelectionNotify + // event may still come later when the selection owner comes back + // to life and the text gets inserted unexpectedly. Don't know + // why that happens or how to avoid that :-(. + if (time(NULL) > start_time + 2) + { + timed_out = TRUE; + break; + } + + // Do we need this? Probably not. + XSync(dpy, False); + + // Wait for 1 msec to avoid that we eat up all CPU time. + ui_delay(1L, TRUE); + } + + if (success == TRUE) + return; + + // don't do a retry with another type after timing out, otherwise we + // hang for 15 seconds. + if (timed_out) + break; + } + + // Final fallback position - use the X CUT_BUFFER0 store + yank_cut_buffer0(dpy, cbd); +} + + void +clip_x11_lose_selection(Widget myShell, Clipboard_T *cbd) +{ + XtDisownSelection(myShell, cbd->sel_atom, + XtLastTimestampProcessed(XtDisplay(myShell))); +} + + int +clip_x11_own_selection(Widget myShell, Clipboard_T *cbd) +{ + // When using the GUI we have proper timestamps, use the one of the last + // event. When in the console we don't get events (the terminal gets + // them), Get the time by a zero-length append, clip_x11_timestamp_cb will + // be called with the current timestamp. +#ifdef FEAT_GUI + if (gui.in_use) + { + if (XtOwnSelection(myShell, cbd->sel_atom, + XtLastTimestampProcessed(XtDisplay(myShell)), + clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb, + clip_x11_notify_cb) == False) + return FAIL; + } + else +#endif + { + if (!XChangeProperty(XtDisplay(myShell), XtWindow(myShell), + cbd->sel_atom, timestamp_atom, 32, PropModeAppend, NULL, 0)) + return FAIL; + } + // Flush is required in a terminal as nothing else is doing it. + XFlush(XtDisplay(myShell)); + return OK; +} + +/* + * Send the current selection to the clipboard. Do nothing for X because we + * will fill in the selection only when requested by another app. + */ + void +clip_x11_set_selection(Clipboard_T *cbd UNUSED) +{ +} + +#endif + +#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) \ + || defined(FEAT_GUI_GTK) || defined(PROTO) +/* + * Get the contents of the X CUT_BUFFER0 and put it in "cbd". + */ + void +yank_cut_buffer0(Display *dpy, Clipboard_T *cbd) +{ + int nbytes = 0; + char_u *buffer = (char_u *)XFetchBuffer(dpy, &nbytes, 0); + + if (nbytes > 0) + { + int done = FALSE; + + // CUT_BUFFER0 is supposed to be always latin1. Convert to 'enc' when + // using a multi-byte encoding. Conversion between two 8-bit + // character sets usually fails and the text might actually be in + // 'enc' anyway. + if (has_mbyte) + { + char_u *conv_buf; + vimconv_T vc; + + vc.vc_type = CONV_NONE; + if (convert_setup(&vc, (char_u *)"latin1", p_enc) == OK) + { + conv_buf = string_convert(&vc, buffer, &nbytes); + if (conv_buf != NULL) + { + clip_yank_selection(MCHAR, conv_buf, (long)nbytes, cbd); + vim_free(conv_buf); + done = TRUE; + } + convert_setup(&vc, NULL, NULL); + } + } + if (!done) // use the text without conversion + clip_yank_selection(MCHAR, buffer, (long)nbytes, cbd); + XFree((void *)buffer); + if (p_verbose > 0) + { + verbose_enter(); + verb_msg(_("Used CUT_BUFFER0 instead of empty selection")); + verbose_leave(); + } + } +} +#endif + +/* + * SELECTION / PRIMARY ('*') + * + * 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>. " + * If not under X, it is synonymous with the clipboard register '+'. + * + * X CLIPBOARD ('+') + * + * Text selection stuff that uses the GUI clipboard register '+'. + * Under X, this matches the standard cut/paste buffer CLIPBOARD selection. + * It will be used for unnamed cut/pasting is 'clipboard' contains "unnamed", + * otherwise you will need to do <"+p>. " + * If not under X, it is synonymous with the selection register '*'. + */ + +/* + * Routine to export any final X selection we had to the environment + * so that the text is still available after Vim has exited. X selections + * only exist while the owning application exists, so we write to the + * permanent (while X runs) store CUT_BUFFER0. + * Dump the CLIPBOARD selection if we own it (it's logically the more + * 'permanent' of the two), otherwise the PRIMARY one. + * For now, use a hard-coded sanity limit of 1Mb of data. + */ +#if (defined(FEAT_X11) && defined(FEAT_CLIPBOARD)) || defined(PROTO) + void +x11_export_final_selection(void) +{ + Display *dpy; + char_u *str = NULL; + long_u len = 0; + int motion_type = -1; + +# ifdef FEAT_GUI + if (gui.in_use) + dpy = X_DISPLAY; + else +# endif +# ifdef FEAT_XCLIPBOARD + dpy = xterm_dpy; +# else + return; +# endif + + // Get selection to export + if (clip_plus.owned) + motion_type = clip_convert_selection(&str, &len, &clip_plus); + else if (clip_star.owned) + motion_type = clip_convert_selection(&str, &len, &clip_star); + + // Check it's OK + if (dpy != NULL && str != NULL && motion_type >= 0 + && len < 1024*1024 && len > 0) + { + int ok = TRUE; + + // The CUT_BUFFER0 is supposed to always contain latin1. Convert from + // 'enc' when it is a multi-byte encoding. When 'enc' is an 8-bit + // encoding conversion usually doesn't work, so keep the text as-is. + if (has_mbyte) + { + vimconv_T vc; + + vc.vc_type = CONV_NONE; + if (convert_setup(&vc, p_enc, (char_u *)"latin1") == OK) + { + int intlen = len; + char_u *conv_str; + + vc.vc_fail = TRUE; + conv_str = string_convert(&vc, str, &intlen); + len = intlen; + if (conv_str != NULL) + { + vim_free(str); + str = conv_str; + } + else + { + ok = FALSE; + } + convert_setup(&vc, NULL, NULL); + } + else + { + ok = FALSE; + } + } + + // Do not store the string if conversion failed. Better to use any + // other selection than garbled text. + if (ok) + { + XStoreBuffer(dpy, (char *)str, (int)len, 0); + XFlush(dpy); + } + } + + vim_free(str); +} +#endif + + void +clip_free_selection(Clipboard_T *cbd) +{ + yankreg_T *y_ptr = get_y_current(); + + if (cbd == &clip_plus) + set_y_current(get_y_register(PLUS_REGISTER)); + else + set_y_current(get_y_register(STAR_REGISTER)); + free_yank_all(); + get_y_current()->y_size = 0; + set_y_current(y_ptr); +} + +/* + * Get the selected text and put it in register '*' or '+'. + */ + void +clip_get_selection(Clipboard_T *cbd) +{ + yankreg_T *old_y_previous, *old_y_current; + pos_T old_cursor; + pos_T old_visual; + int old_visual_mode; + colnr_T old_curswant; + int old_set_curswant; + pos_T old_op_start, old_op_end; + oparg_T oa; + cmdarg_T ca; + + if (cbd->owned) + { + if ((cbd == &clip_plus + && get_y_register(PLUS_REGISTER)->y_array != NULL) + || (cbd == &clip_star + && get_y_register(STAR_REGISTER)->y_array != NULL)) + return; + + // Avoid triggering autocmds such as TextYankPost. + block_autocmds(); + + // Get the text between clip_star.start & clip_star.end + old_y_previous = get_y_previous(); + old_y_current = get_y_current(); + old_cursor = curwin->w_cursor; + old_curswant = curwin->w_curswant; + old_set_curswant = curwin->w_set_curswant; + old_op_start = curbuf->b_op_start; + old_op_end = curbuf->b_op_end; + old_visual = VIsual; + old_visual_mode = VIsual_mode; + clear_oparg(&oa); + oa.regname = (cbd == &clip_plus ? '+' : '*'); + oa.op_type = OP_YANK; + CLEAR_FIELD(ca); + ca.oap = &oa; + ca.cmdchar = 'y'; + ca.count1 = 1; + ca.retval = CA_NO_ADJ_OP_END; + do_pending_operator(&ca, 0, TRUE); + + // restore things + set_y_previous(old_y_previous); + set_y_current(old_y_current); + curwin->w_cursor = old_cursor; + changed_cline_bef_curs(); // need to update w_virtcol et al + curwin->w_curswant = old_curswant; + curwin->w_set_curswant = old_set_curswant; + curbuf->b_op_start = old_op_start; + curbuf->b_op_end = old_op_end; + VIsual = old_visual; + VIsual_mode = old_visual_mode; + + unblock_autocmds(); + } + else if (!is_clipboard_needs_update()) + { + clip_free_selection(cbd); + + // Try to get selected text from another window + clip_gen_request_selection(cbd); + } +} + +/* + * Convert from the GUI selection string into the '*'/'+' register. + */ + void +clip_yank_selection( + int type, + char_u *str, + long len, + Clipboard_T *cbd) +{ + yankreg_T *y_ptr; + + if (cbd == &clip_plus) + y_ptr = get_y_register(PLUS_REGISTER); + else + y_ptr = get_y_register(STAR_REGISTER); + + clip_free_selection(cbd); + + str_to_reg(y_ptr, type, str, len, 0L, FALSE); +} + +/* + * Convert the '*'/'+' register into a GUI selection string returned in *str + * with length *len. + * Returns the motion type, or -1 for failure. + */ + int +clip_convert_selection(char_u **str, long_u *len, Clipboard_T *cbd) +{ + char_u *p; + int lnum; + int i, j; + int_u eolsize; + yankreg_T *y_ptr; + + if (cbd == &clip_plus) + y_ptr = get_y_register(PLUS_REGISTER); + else + y_ptr = get_y_register(STAR_REGISTER); + +# 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 += (long_u)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 = alloc(*len + 1); // add one to avoid zero + 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 + p[i] = '\n'; + lnum++; + j = -1; + } + else + p[i] = y_ptr->y_array[lnum][j]; + } + return y_ptr->y_type; +} + +/* + * When "regname" is a clipboard register, obtain the selection. If it's not + * available return zero, otherwise return "regname". + */ + int +may_get_selection(int regname) +{ + if (regname == '*') + { + if (!clip_star.available) + regname = 0; + else + clip_get_selection(&clip_star); + } + else if (regname == '+') + { + if (!clip_plus.available) + regname = 0; + else + clip_get_selection(&clip_plus); + } + return regname; +} + +/* + * If we have written to a clipboard register, send the text to the clipboard. + */ + void +may_set_selection(void) +{ + if ((get_y_current() == get_y_register(STAR_REGISTER)) + && clip_star.available) + { + clip_own_selection(&clip_star); + clip_gen_set_selection(&clip_star); + } + else if ((get_y_current() == get_y_register(PLUS_REGISTER)) + && clip_plus.available) + { + clip_own_selection(&clip_plus); + clip_gen_set_selection(&clip_plus); + } +} + +/* + * Adjust the register name pointed to with "rp" for the clipboard being + * used always and the clipboard being available. + */ + void +adjust_clip_reg(int *rp) +{ + // If no reg. specified, and "unnamed" or "unnamedplus" is in 'clipboard', + // use '*' or '+' reg, respectively. "unnamedplus" prevails. + if (*rp == 0 && (clip_unnamed != 0 || clip_unnamed_saved != 0)) + { + if (clip_unnamed != 0) + *rp = ((clip_unnamed & CLIP_UNNAMED_PLUS) && clip_plus.available) + ? '+' : '*'; + else + *rp = ((clip_unnamed_saved & CLIP_UNNAMED_PLUS) + && clip_plus.available) ? '+' : '*'; + } + if (!clip_star.available && *rp == '*') + *rp = 0; + if (!clip_plus.available && *rp == '+') + *rp = 0; +} + +#endif // FEAT_CLIPBOARD |