tweaks: move the character/word-deletion functions to a better location
Having all the cutting and deleting functions together in one file kind of makes sense.master
Benno Schulenberg
parent
f9bb5382aa
commit
16c20ad873
183
src/cut.c
183
src/cut.c
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@ -24,6 +24,189 @@
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#include <string.h>
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/* Delete the character under the cursor. */
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void do_deletion(undo_type action)
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{
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#ifndef NANO_TINY
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size_t old_amount = 0;
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#endif
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openfile->placewewant = xplustabs();
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/* When in the middle of a line, delete the current character. */
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if (openfile->current->data[openfile->current_x] != '\0') {
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int char_len = parse_mbchar(openfile->current->data +
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openfile->current_x, NULL, NULL);
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size_t line_len = strlen(openfile->current->data +
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openfile->current_x);
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#ifndef NANO_TINY
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/* If the type of action changed or the cursor moved to a different
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* line, create a new undo item, otherwise update the existing item. */
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if (action != openfile->last_action ||
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openfile->current->lineno != openfile->current_undo->lineno)
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add_undo(action);
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else
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update_undo(action);
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if (ISSET(SOFTWRAP))
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old_amount = number_of_chunks_in(openfile->current);
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#endif
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/* Move the remainder of the line "in", over the current character. */
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charmove(&openfile->current->data[openfile->current_x],
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&openfile->current->data[openfile->current_x + char_len],
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line_len - char_len + 1);
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#ifndef NANO_TINY
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/* Adjust the mark if it is after the cursor on the current line. */
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if (openfile->mark == openfile->current &&
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openfile->mark_x > openfile->current_x)
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openfile->mark_x -= char_len;
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#endif
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/* Otherwise, when not at end of buffer, join this line with the next. */
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} else if (openfile->current != openfile->filebot) {
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filestruct *joining = openfile->current->next;
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/* If there is a magic line, and we're before it: don't eat it. */
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if (joining == openfile->filebot && openfile->current_x != 0 &&
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!ISSET(NO_NEWLINES)) {
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#ifndef NANO_TINY
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if (action == BACK)
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add_undo(BACK);
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#endif
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return;
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}
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#ifndef NANO_TINY
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add_undo(action);
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#endif
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/* Add the contents of the next line to those of the current one. */
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openfile->current->data = charealloc(openfile->current->data,
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strlen(openfile->current->data) + strlen(joining->data) + 1);
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strcat(openfile->current->data, joining->data);
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#ifndef NANO_TINY
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/* Adjust the mark if it was on the line that was "eaten". */
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if (openfile->mark == joining) {
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openfile->mark = openfile->current;
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openfile->mark_x += openfile->current_x;
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}
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#endif
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unlink_node(joining);
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renumber(openfile->current);
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/* Two lines were joined, so we need to refresh the screen. */
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refresh_needed = TRUE;
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} else
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/* We're at the end-of-file: nothing to do. */
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return;
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/* Adjust the file size, and remember it for a possible redo. */
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openfile->totsize--;
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#ifndef NANO_TINY
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openfile->current_undo->newsize = openfile->totsize;
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/* If the number of screen rows that a softwrapped line occupies
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* has changed, we need a full refresh. */
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if (ISSET(SOFTWRAP) && refresh_needed == FALSE &&
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number_of_chunks_in(openfile->current) != old_amount)
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refresh_needed = TRUE;
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#endif
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set_modified();
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}
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/* Delete the character under the cursor. */
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void do_delete(void)
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{
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#ifndef NANO_TINY
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if (openfile->mark && ISSET(LET_THEM_ZAP))
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zap_text();
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else
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#endif
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do_deletion(DEL);
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}
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/* Backspace over one character. That is, move the cursor left one
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* character, and then delete the character under the cursor. */
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void do_backspace(void)
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{
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#ifndef NANO_TINY
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if (openfile->mark && ISSET(LET_THEM_ZAP))
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zap_text();
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else
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#endif
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if (openfile->current != openfile->fileage || openfile->current_x > 0) {
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do_left();
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do_deletion(BACK);
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}
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}
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#ifndef NANO_TINY
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/* Delete text from the cursor until the first start of a word to
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* the right, or to the left when backward is true. */
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void do_cutword(bool backward)
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{
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/* Remember the current cursor position. */
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filestruct *is_current = openfile->current;
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size_t is_current_x = openfile->current_x;
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/* Remember where the cutbuffer is and then make it seem blank. */
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filestruct *is_cutbuffer = cutbuffer;
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filestruct *is_cutbottom = cutbottom;
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cutbuffer = NULL;
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cutbottom = NULL;
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/* Move the cursor to a word start, to the left or to the right.
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* If that word is on another line and the cursor was not already
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* on the edge of the original line, then put the cursor on that
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* edge instead, so that lines will not be joined unexpectedly. */
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if (backward) {
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do_prev_word(ISSET(WORD_BOUNDS));
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if (openfile->current != is_current) {
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if (is_current_x > 0) {
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openfile->current = is_current;
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openfile->current_x = 0;
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} else
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openfile->current_x = strlen(openfile->current->data);
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}
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} else {
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do_next_word(FALSE, ISSET(WORD_BOUNDS));
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if (openfile->current != is_current &&
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is_current->data[is_current_x] != '\0') {
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openfile->current = is_current;
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openfile->current_x = strlen(is_current->data);
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}
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}
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/* Set the mark at the start of that word. */
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openfile->mark = openfile->current;
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openfile->mark_x = openfile->current_x;
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/* Put the cursor back where it was, so an undo will put it there too. */
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openfile->current = is_current;
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openfile->current_x = is_current_x;
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/* Now kill the marked region and a word is gone. */
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do_cut_text_void();
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/* Discard the cut word and restore the cutbuffer. */
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free_filestruct(cutbuffer);
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cutbuffer = is_cutbuffer;
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cutbottom = is_cutbottom;
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}
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/* Delete a word leftward. */
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void do_cut_prev_word(void)
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{
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do_cutword(TRUE);
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}
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/* Delete a word rightward. */
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void do_cut_next_word(void)
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{
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do_cutword(FALSE);
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}
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#endif /* !NANO_TINY */
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/* If we aren't on the last line of the file, move all the text of the
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* current line, plus the newline at the end, into the cutbuffer. If we
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* are, move all of the text of the current line into the cutbuffer. In
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10
src/proto.h
10
src/proto.h
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@ -243,7 +243,11 @@ void precalc_multicolorinfo(void);
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#endif
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/* Most functions in cut.c. */
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void do_delete(void);
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void do_backspace(void);
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#ifndef NANO_TINY
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void do_cut_prev_word(void);
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void do_cut_next_word(void);
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void cut_marked(bool *right_side_up);
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#endif
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void do_cut_text(bool copy_text, bool marked, bool cut_till_eof, bool append);
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@ -492,12 +496,6 @@ void do_find_bracket(void);
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#ifndef NANO_TINY
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void do_mark(void);
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#endif
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void do_delete(void);
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void do_backspace(void);
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#ifndef NANO_TINY
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void do_cut_prev_word(void);
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void do_cut_next_word(void);
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#endif
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void do_tab(void);
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#ifndef NANO_TINY
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void do_indent(void);
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183
src/text.c
183
src/text.c
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@ -76,189 +76,6 @@ char *invocation_error(const char *name)
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}
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#endif
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/* Delete the character under the cursor. */
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void do_deletion(undo_type action)
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{
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#ifndef NANO_TINY
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size_t old_amount = 0;
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#endif
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openfile->placewewant = xplustabs();
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/* When in the middle of a line, delete the current character. */
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if (openfile->current->data[openfile->current_x] != '\0') {
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int char_len = parse_mbchar(openfile->current->data +
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openfile->current_x, NULL, NULL);
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size_t line_len = strlen(openfile->current->data +
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openfile->current_x);
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#ifndef NANO_TINY
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/* If the type of action changed or the cursor moved to a different
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* line, create a new undo item, otherwise update the existing item. */
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if (action != openfile->last_action ||
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openfile->current->lineno != openfile->current_undo->lineno)
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add_undo(action);
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else
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update_undo(action);
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if (ISSET(SOFTWRAP))
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old_amount = number_of_chunks_in(openfile->current);
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#endif
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/* Move the remainder of the line "in", over the current character. */
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charmove(&openfile->current->data[openfile->current_x],
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&openfile->current->data[openfile->current_x + char_len],
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line_len - char_len + 1);
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#ifndef NANO_TINY
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/* Adjust the mark if it is after the cursor on the current line. */
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if (openfile->mark == openfile->current &&
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openfile->mark_x > openfile->current_x)
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openfile->mark_x -= char_len;
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#endif
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/* Otherwise, when not at end of buffer, join this line with the next. */
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} else if (openfile->current != openfile->filebot) {
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filestruct *joining = openfile->current->next;
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/* If there is a magic line, and we're before it: don't eat it. */
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if (joining == openfile->filebot && openfile->current_x != 0 &&
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!ISSET(NO_NEWLINES)) {
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#ifndef NANO_TINY
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if (action == BACK)
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add_undo(BACK);
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#endif
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return;
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}
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#ifndef NANO_TINY
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add_undo(action);
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#endif
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/* Add the contents of the next line to those of the current one. */
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openfile->current->data = charealloc(openfile->current->data,
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strlen(openfile->current->data) + strlen(joining->data) + 1);
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strcat(openfile->current->data, joining->data);
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#ifndef NANO_TINY
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/* Adjust the mark if it was on the line that was "eaten". */
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if (openfile->mark == joining) {
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openfile->mark = openfile->current;
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openfile->mark_x += openfile->current_x;
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}
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#endif
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unlink_node(joining);
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renumber(openfile->current);
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/* Two lines were joined, so we need to refresh the screen. */
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refresh_needed = TRUE;
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} else
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/* We're at the end-of-file: nothing to do. */
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return;
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/* Adjust the file size, and remember it for a possible redo. */
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openfile->totsize--;
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#ifndef NANO_TINY
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openfile->current_undo->newsize = openfile->totsize;
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/* If the number of screen rows that a softwrapped line occupies
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* has changed, we need a full refresh. */
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if (ISSET(SOFTWRAP) && refresh_needed == FALSE &&
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number_of_chunks_in(openfile->current) != old_amount)
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refresh_needed = TRUE;
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#endif
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set_modified();
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}
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/* Delete the character under the cursor. */
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void do_delete(void)
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{
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#ifndef NANO_TINY
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if (openfile->mark && ISSET(LET_THEM_ZAP))
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zap_text();
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else
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#endif
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do_deletion(DEL);
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}
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/* Backspace over one character. That is, move the cursor left one
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* character, and then delete the character under the cursor. */
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void do_backspace(void)
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{
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#ifndef NANO_TINY
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if (openfile->mark && ISSET(LET_THEM_ZAP))
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zap_text();
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else
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#endif
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if (openfile->current != openfile->fileage || openfile->current_x > 0) {
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do_left();
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do_deletion(BACK);
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}
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}
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#ifndef NANO_TINY
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/* Delete text from the cursor until the first start of a word to
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* the right, or to the left when backward is true. */
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void do_cutword(bool backward)
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{
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/* Remember the current cursor position. */
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filestruct *is_current = openfile->current;
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size_t is_current_x = openfile->current_x;
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/* Remember where the cutbuffer is and then make it seem blank. */
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filestruct *is_cutbuffer = cutbuffer;
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filestruct *is_cutbottom = cutbottom;
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cutbuffer = NULL;
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cutbottom = NULL;
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/* Move the cursor to a word start, to the left or to the right.
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* If that word is on another line and the cursor was not already
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* on the edge of the original line, then put the cursor on that
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* edge instead, so that lines will not be joined unexpectedly. */
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if (backward) {
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do_prev_word(ISSET(WORD_BOUNDS));
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if (openfile->current != is_current) {
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if (is_current_x > 0) {
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openfile->current = is_current;
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openfile->current_x = 0;
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} else
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openfile->current_x = strlen(openfile->current->data);
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}
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} else {
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do_next_word(FALSE, ISSET(WORD_BOUNDS));
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if (openfile->current != is_current &&
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is_current->data[is_current_x] != '\0') {
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openfile->current = is_current;
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openfile->current_x = strlen(is_current->data);
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}
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}
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/* Set the mark at the start of that word. */
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openfile->mark = openfile->current;
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openfile->mark_x = openfile->current_x;
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/* Put the cursor back where it was, so an undo will put it there too. */
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openfile->current = is_current;
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openfile->current_x = is_current_x;
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/* Now kill the marked region and a word is gone. */
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do_cut_text_void();
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/* Discard the cut word and restore the cutbuffer. */
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free_filestruct(cutbuffer);
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cutbuffer = is_cutbuffer;
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cutbottom = is_cutbottom;
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}
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/* Delete a word leftward. */
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void do_cut_prev_word(void)
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{
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do_cutword(TRUE);
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}
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/* Delete a word rightward. */
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void do_cut_next_word(void)
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{
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do_cutword(FALSE);
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}
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#endif /* !NANO_TINY */
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/* Insert a tab. If the TABS_TO_SPACES flag is set, insert the number
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* of spaces that a tab would normally take up. */
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void do_tab(void)
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