/* If scroll_only is FALSE, move up one line. If scroll_only is TRUE,
* scroll up one line without scrolling the cursor. */
void do_up(bool scroll_only)
{
size_t was_column = xplustabs();
/* If we're at the top of the file, or if scroll_only is TRUE and
* the top of the file is onscreen, get out. */
if (openfile->current == openfile->fileage ||
(scroll_only && openfile->edittop == openfile->fileage))
return;
assert(ISSET(SOFTWRAP) || openfile->current_y == openfile->current->lineno - openfile->edittop->lineno);
/* Move the current line of the edit window up. */
openfile->current = openfile->current->prev;
openfile->current_x = actual_x(openfile->current->data,
openfile->placewewant);
/* When the cursor was on the first line of the edit window (or when just
* scrolling without moving the cursor), scroll the edit window up -- one
* line if we're in smooth scrolling mode, and half a page otherwise. */
if (openfile->current->next == openfile->edittop || scroll_only)
edit_scroll(UPWARD, (ISSET(SMOOTH_SCROLL) || scroll_only) ?
1 : editwinrows / 2 + 1);
/* If the lines weren't already redrawn, see if they need to be. */
if (openfile->current_y > 0) {
/* Redraw the prior line if it was horizontally scrolled. */
if (need_horizontal_scroll(was_column, 0))
update_line(openfile->current->next, 0);
/* Redraw the current line if it needs to be horizontally scrolled. */
if (need_horizontal_scroll(0, xplustabs()))
update_line(openfile->current, openfile->current_x);
}
}
/* Move right one character. */
void do_right(void)
{
size_t was_column = xplustabs();
assert(openfile->current_x <= strlen(openfile->current->data));
if (openfile->current->data[openfile->current_x] != '\0')
openfile->current_x = move_mbright(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->filebot) {
openfile->current_x = 0;
#ifndef NANO_TINY
if (ISSET(SOFTWRAP))
openfile->current_y -= strlenpt(openfile->current->data) / editwincols;
#endif
}
openfile->placewewant = xplustabs();
if (need_horizontal_scroll(was_column, openfile->placewewant))
update_line(openfile->current, openfile->current_x);
if (openfile->current_x == 0)
do_down_void();
else
ensure_line_is_visible();
}
/* Reset current_y, based on the position of current, and put the cursor
* in the edit window at (current_y, current_x). */
void reset_cursor(void)
{
size_t xpt;
/* If we haven't opened any files yet, put the cursor in the top
* left corner of the edit window and get out. */
if (openfiles.size() == 0) {
wmove(edit, 0, 0);
return;
}
xpt = xplustabs();
if (ISSET(SOFTWRAP)) {
filestruct *tmp;
openfile->current_y = 0;
for (tmp = openfile->edittop; tmp && tmp != openfile->current; tmp = tmp->next) {
openfile->current_y += 1 + strlenpt(tmp->data) / COLS;
}
openfile->current_y += xplustabs() / COLS;
if (openfile->current_y < editwinrows) {
wmove(edit, openfile->current_y, xpt % COLS);
}
} else {
openfile->current_y = openfile->current->lineno - openfile->edittop->lineno;
if (openfile->current_y < editwinrows) {
wmove(edit, openfile->current_y, xpt - get_page_start(xpt));
}
}
}
/* Move to the end of the current line. */
void do_end(void)
{
size_t was_column = xplustabs();
openfile->current_x = strlen(openfile->current->data);
openfile->placewewant = xplustabs();
if (need_horizontal_scroll(was_column, openfile->placewewant))
update_line(openfile->current, openfile->current_x);
ensure_line_is_visible();
}
/* Copy text from the cutbuffer into the current filestruct. */
void do_uncut_text(void)
{
assert(openfile->current != NULL && openfile->current->data != NULL);
/* If the cutbuffer is empty, get out. */
if (cutbuffer == NULL)
return;
add_undo(PASTE);
/* Add a copy of the text in the cutbuffer to the current filestruct
* at the current cursor position. */
copy_from_filestruct(cutbuffer);
update_undo(PASTE);
/* Set the current place we want to where the text from the
* cutbuffer ends. */
openfile->placewewant = xplustabs();
/* Mark the file as modified. */
set_modified();
/* Update the screen. */
edit_refresh_needed = TRUE;
#ifndef DISABLE_COLOR
reset_multis(openfile->current, FALSE);
#endif
#ifdef DEBUG
dump_filestruct_reverse();
#endif
}
/* Move to the beginning of the current line. If the SMART_HOME flag is
* set, move to the first non-whitespace character of the current line
* if we aren't already there, or to the beginning of the current line
* if we are. */
void do_home(void)
{
size_t pww_save = openfile->placewewant;
#ifndef NANO_TINY
if (ISSET(SMART_HOME)) {
size_t current_x_save = openfile->current_x;
openfile->current_x = indent_length(openfile->current->data);
if (openfile->current_x == current_x_save ||
openfile->current->data[openfile->current_x] == '\0')
openfile->current_x = 0;
openfile->placewewant = xplustabs();
} else {
#endif
openfile->current_x = 0;
openfile->placewewant = 0;
#ifndef NANO_TINY
}
#endif
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
/* Move down to the beginning of the last line of the current paragraph.
* Then move down one line farther if there is such a line, or to the
* end of the current line if not. If allow_update is TRUE, update the
* screen afterwards. A line is the last line of a paragraph if it is
* in a paragraph, and the next line either is the beginning line of a
* paragraph or isn't in a paragraph. */
void do_para_end(bool allow_update)
{
filestruct *const current_save = openfile->current;
const size_t pww_save = openfile->placewewant;
while (openfile->current != openfile->filebot &&
!inpar(openfile->current))
openfile->current = openfile->current->next;
while (openfile->current != openfile->filebot &&
inpar(openfile->current->next) &&
!begpar(openfile->current->next)) {
openfile->current = openfile->current->next;
openfile->current_y++;
}
if (openfile->current != openfile->filebot) {
openfile->current = openfile->current->next;
openfile->current_x = 0;
openfile->placewewant = 0;
} else {
openfile->current_x = strlen(openfile->current->data);
openfile->placewewant = xplustabs();
}
if (allow_update)
edit_redraw(current_save, pww_save);
}
/* Move left one character. */
void do_left(void)
{
size_t was_column = xplustabs();
if (openfile->current_x > 0)
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->fileage) {
do_up_void();
openfile->current_x = strlen(openfile->current->data);
}
openfile->placewewant = xplustabs();
if (need_horizontal_scroll(was_column, openfile->placewewant))
update_line(openfile->current, openfile->current_x);
}
/* Move to the last line of the file. */
void do_last_line(void)
{
openfile->current = openfile->filebot;
openfile->current_x = strlen(openfile->filebot->data);
openfile->placewewant = xplustabs();
openfile->current_y = editwinrows - 1;
edit_refresh_needed = 1;
}
/* Search for a string. */
void do_search(void)
{
linestruct *fileptr = openfile->current;
size_t fileptr_x = openfile->current_x;
size_t pww_save = openfile->placewewant;
int i;
bool didfind;
i = search_init(FALSE, FALSE);
if (i == -1)
/* Cancel, Go to Line, blank search string, or regcomp() failed. */
search_replace_abort();
else if (i == -2)
/* Replace. */
do_replace();
#if !defined(NANO_TINY) || defined(HAVE_REGEX_H)
else if (i == 1)
/* Case Sensitive, Backwards, or Regexp search toggle. */
do_search();
#endif
if (i != 0)
return;
/* If answer is now "", copy last_search into answer. */
if (*answer == '\0')
answer = mallocstrcpy(answer, last_search);
else
last_search = mallocstrcpy(last_search, answer);
#ifndef DISABLE_HISTORIES
/* If answer is not "", add this search string to the search history
* list. */
if (answer[0] != '\0')
update_history(&search_history, answer);
#endif
findnextstr_wrap_reset();
didfind = findnextstr(
#ifndef DISABLE_SPELLER
FALSE,
#endif
openfile->current, openfile->current_x, answer, NULL);
/* If we found something, and we're back at the exact same spot where
* we started searching, then this is the only occurrence. */
if (fileptr == openfile->current && fileptr_x ==
openfile->current_x && didfind) {
statusbar(_("This is the only occurrence"));
}
openfile->placewewant = xplustabs();
edit_redraw(fileptr, pww_save);
search_replace_abort();
}
/* Move to the end of the current line. */
void do_end(void)
{
size_t pww_save = openfile->placewewant;
openfile->current_x = strlen(openfile->current->data);
openfile->placewewant = xplustabs();
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
/* Go to the specified line and x position. */
void goto_line_posx(ssize_t line, size_t pos_x)
{
for (openfile->current = openfile->fileage; openfile->current != openfile->filebot &&
openfile->current->next != NULL && line > 1; line--)
openfile->current = openfile->current->next;
openfile->current_x = pos_x;
openfile->placewewant = xplustabs();
edit_refresh_needed = TRUE;
}
/* Move all currently marked text into the cutbuffer, and set the
* current place we want to where the text used to start. */
void cut_marked(void)
{
linestruct *top, *bot;
size_t top_x, bot_x;
mark_order((const linestruct **)&top, &top_x,
(const linestruct **)&bot, &bot_x, NULL);
move_to_filestruct(&cutbuffer, &cutbottom, top, top_x, bot, bot_x);
openfile->placewewant = xplustabs();
}
/* Search for a match to one of the two characters in bracket_set. If
* reverse is TRUE, search backwards for the leftmost bracket.
* Otherwise, search forwards for the rightmost bracket. Return TRUE if
* we found a match, and FALSE otherwise. */
bool find_bracket_match(bool reverse, const char *bracket_set)
{
linestruct *fileptr = openfile->current;
const char *rev_start = NULL, *found = NULL;
ssize_t current_y_find = openfile->current_y;
assert(mbstrlen(bracket_set) == 2);
/* rev_start might end up 1 character before the start or after the
* end of the line. This won't be a problem because we'll skip over
* it below in that case, and rev_start will be properly set when
* the search continues on the previous or next line. */
rev_start = reverse ? fileptr->data + (openfile->current_x - 1) :
fileptr->data + (openfile->current_x + 1);
/* Look for either of the two characters in bracket_set. rev_start
* can be 1 character before the start or after the end of the line.
* In either case, just act as though no match is found. */
while (TRUE) {
found = ((rev_start > fileptr->data && *(rev_start - 1) ==
'\0') || rev_start < fileptr->data) ? NULL : (reverse ?
mbrevstrpbrk(fileptr->data, bracket_set, rev_start) :
mbstrpbrk(rev_start, bracket_set));
if (found != NULL)
/* We've found a potential match. */
break;
if (reverse) {
fileptr = fileptr->prev;
current_y_find--;
} else {
fileptr = fileptr->next;
current_y_find++;
}
if (fileptr == NULL)
/* We've reached the start or end of the buffer, so get out. */
return FALSE;
rev_start = fileptr->data;
if (reverse)
rev_start += strlen(fileptr->data);
}
/* We've definitely found something. */
openfile->current = fileptr;
openfile->current_x = found - fileptr->data;
openfile->placewewant = xplustabs();
openfile->current_y = current_y_find;
return TRUE;
}
/* Move to the last line of the file. */
void do_last_line(void)
{
filestruct *current_save = openfile->current;
size_t pww_save = openfile->placewewant;
openfile->current = openfile->filebot;
openfile->current_x = strlen(openfile->filebot->data);
openfile->placewewant = xplustabs();
openfile->current_y = editwinrows - 1;
edit_redraw(current_save, pww_save);
}
/* Move to the last line of the file. */
void do_last_line(void)
{
openfile->current = openfile->filebot;
openfile->current_x = strlen(openfile->filebot->data);
openfile->placewewant = xplustabs();
/* Set the last line of the screen as the target for the cursor. */
openfile->current_y = editwinrows - 1;
refresh_needed = TRUE;
focusing = FALSE;
}
/* Move to the beginning of the current line. If the SMART_HOME flag is
* set, move to the first non-whitespace character of the current line
* if we aren't already there, or to the beginning of the current line
* if we are. */
void do_home(void)
{
size_t was_column = xplustabs();
#ifndef NANO_TINY
if (ISSET(SMART_HOME)) {
size_t current_x_save = openfile->current_x;
openfile->current_x = indent_length(openfile->current->data);
if (openfile->current_x == current_x_save ||
openfile->current->data[openfile->current_x] == '\0')
openfile->current_x = 0;
} else
#endif
openfile->current_x = 0;
openfile->placewewant = xplustabs();
if (need_horizontal_scroll(was_column, openfile->placewewant))
update_line(openfile->current, openfile->current_x);
}
/* Move left one character. */
void do_left(void)
{
size_t pww_save = openfile->placewewant;
if (openfile->current_x > 0)
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->fileage) {
do_up_void();
openfile->current_x = strlen(openfile->current->data);
}
openfile->placewewant = xplustabs();
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
/* Move to the previous word in the file. If allow_punct is TRUE, treat
* punctuation as part of a word. If allow_update is TRUE, update the
* screen afterwards. */
void do_prev_word(bool allow_punct, bool allow_update)
{
size_t pww_save = openfile->placewewant;
filestruct *current_save = openfile->current;
bool seen_a_word = FALSE, step_forward = FALSE;
assert(openfile->current != NULL && openfile->current->data != NULL);
/* Move backward until we pass over the start of a word. */
while (TRUE) {
/* If at the head of a line, move to the end of the preceding one. */
if (openfile->current_x == 0) {
if (openfile->current->prev == NULL)
break;
openfile->current = openfile->current->prev;
openfile->current_x = strlen(openfile->current->data);
}
/* Step back one character. */
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
if (is_word_mbchar(openfile->current->data + openfile->current_x,
allow_punct)) {
seen_a_word = TRUE;
/* If at the head of a line now, this surely is a word start. */
if (openfile->current_x == 0)
break;
} else if (seen_a_word) {
/* This is space now: we've overshot the start of the word. */
step_forward = TRUE;
break;
}
}
if (step_forward)
/* Move one character forward again to sit on the start of the word. */
openfile->current_x = move_mbright(openfile->current->data,
openfile->current_x);
openfile->placewewant = xplustabs();
/* If allow_update is TRUE, update the screen. */
if (allow_update)
edit_redraw(current_save, pww_save);
}
/* Move right one character. */
void do_right(void)
{
size_t pww_save = openfile->placewewant;
assert(openfile->current_x <= strlen(openfile->current->data));
if (openfile->current->data[openfile->current_x] != '\0')
openfile->current_x = move_mbright(openfile->current->data,
openfile->current_x);
else if (openfile->current != openfile->filebot) {
do_down_void();
openfile->current_x = 0;
}
openfile->placewewant = xplustabs();
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
/* Search for the last string without prompting. */
void do_research(void)
{
linestruct *fileptr = openfile->current;
size_t fileptr_x = openfile->current_x;
size_t pww_save = openfile->placewewant;
bool didfind;
focusing = TRUE;
#ifndef DISABLE_HISTORIES
/* If nothing was searched for yet during this run of nano, but
* there is a search history, take the most recent item. */
if (last_search[0] == '\0' && searchbot->prev != NULL)
last_search = mallocstrcpy(last_search, searchbot->prev->data);
#endif
if (last_search[0] != '\0') {
#ifdef HAVE_REGEX_H
/* Since answer is "", use last_search! */
if (ISSET(USE_REGEXP) && !regexp_init(last_search))
return;
#endif
findnextstr_wrap_reset();
didfind = findnextstr(
#ifndef DISABLE_SPELLER
FALSE,
#endif
openfile->current, openfile->current_x, last_search, NULL);
/* If we found something, and we're back at the exact same spot
* where we started searching, then this is the only occurrence. */
if (fileptr == openfile->current && fileptr_x ==
openfile->current_x && didfind) {
statusbar(_("This is the only occurrence"));
}
} else
statusbar(_("No current search pattern"));
openfile->placewewant = xplustabs();
edit_redraw(fileptr, pww_save);
search_replace_abort();
}
/* If constant is true, we display the current cursor position only if
* disable_cursorpos is false. Otherwise, we display it
* unconditionally and set disable_cursorpos to false. If constant is
* true and disable_cursorpos is true, we also set disable_cursorpos to
* false, so that we leave the current statusbar alone this time, and
* display the current cursor position next time. */
void do_cursorpos(bool constant)
{
filestruct *f;
char c;
size_t i, cur_xpt = xplustabs() + 1;
size_t cur_lenpt = strlenpt(openfile->current->data) + 1;
int linepct, colpct, charpct;
assert(openfile->fileage != NULL && openfile->current != NULL);
f = openfile->current->next;
c = openfile->current->data[openfile->current_x];
openfile->current->next = NULL;
openfile->current->data[openfile->current_x] = '\0';
i = get_totsize(openfile->fileage, openfile->current);
openfile->current->data[openfile->current_x] = c;
openfile->current->next = f;
if (constant && disable_cursorpos) {
disable_cursorpos = false;
return;
}
/* Display the current cursor position on the statusbar, and set
* disable_cursorpos to false. */
linepct = 100 * openfile->current->lineno / openfile->filebot->lineno;
colpct = 100 * cur_xpt / cur_lenpt;
charpct = (openfile->totsize == 0) ? 0 : 100 * i / openfile->totsize;
statusbar(
_("line %ld/%ld (%d%%), col %lu/%lu (%d%%), char %lu/%lu (%d%%)"),
(long)openfile->current->lineno,
(long)openfile->filebot->lineno, linepct,
(unsigned long)cur_xpt, (unsigned long)cur_lenpt, colpct,
(unsigned long)i, (unsigned long)openfile->totsize, charpct);
disable_cursorpos = false;
}
/* If we aren't at the end of the current line, move all the text from
* the current cursor position to the end of the current line, not
* counting the newline at the end, into the cutbuffer. If we are, and
* we're not on the last line of the file, move the newline at the end
* into the cutbuffer, and set the current place we want to where the
* newline used to be. */
void cut_to_eol(void)
{
size_t data_len = strlen(openfile->current->data);
assert(openfile->current_x <= data_len);
if (openfile->current_x < data_len)
/* If we're not at the end of the line, move all the text from
* the current position up to it, not counting the newline at
* the end, into the cutbuffer. */
move_to_filestruct(&cutbuffer, &cutbottom, openfile->current,
openfile->current_x, openfile->current, data_len);
else if (openfile->current != openfile->filebot) {
/* If we're at the end of the line, and it isn't the last line
* of the file, move all the text from the current position up
* to the beginning of the next line, i.e. the newline at the
* end, into the cutbuffer. */
move_to_filestruct(&cutbuffer, &cutbottom, openfile->current,
openfile->current_x, openfile->current->next, 0);
openfile->placewewant = xplustabs();
}
}
/* Highlight the current word being replaced or spell checked. We
* expect word to have tabs and control characters expanded. */
void do_replace_highlight(bool highlight, const char *word)
{
size_t y = xplustabs(), word_len = strlenpt(word);
y = get_page_start(y) + COLS - y;
/* Now y is the number of columns that we can display on this
* line. */
assert(y > 0);
if (word_len > y) {
y--;
}
reset_cursor();
wnoutrefresh(edit);
if (highlight) {
wattron(edit, highlight_attribute);
}
/* This is so we can show zero-length matches. */
if (word_len == 0) {
waddch(edit, ' ');
} else {
waddnstr(edit, word, actual_x(word, y));
}
if (word_len > y) {
waddch(edit, '$');
}
if (highlight) {
wattroff(edit, highlight_attribute);
}
}
/* Step through each replace word and prompt user before replacing.
* Parameters real_current and real_current_x are needed in order to
* allow the cursor position to be updated when a word before the cursor
* is replaced by a shorter word.
*
* needle is the string to seek. We replace it with answer. Return -1
* if needle isn't found, else the number of replacements performed. If
* canceled isn't NULL, set it to TRUE if we canceled. */
ssize_t do_replace_loop(
#ifndef DISABLE_SPELLER
bool whole_word_only,
#endif
bool *canceled, const linestruct *real_current, size_t
*real_current_x, const char *needle)
{
ssize_t numreplaced = -1;
size_t match_len;
bool replaceall = FALSE;
#ifndef NANO_TINY
bool old_mark_set = openfile->mark_set;
linestruct *top, *bot;
size_t top_x, bot_x;
bool right_side_up = FALSE;
/* TRUE if (mark_begin, mark_begin_x) is the top of the mark,
* FALSE if (current, current_x) is. */
if (old_mark_set) {
/* If the mark is on, frame the region, and turn the mark off. */
mark_order((const linestruct **)&top, &top_x,
(const linestruct **)&bot, &bot_x, &right_side_up);
openfile->mark_set = FALSE;
/* Start either at the top or the bottom of the marked region. */
if (!ISSET(BACKWARDS_SEARCH)) {
openfile->current = top;
openfile->current_x = (top_x == 0 ? 0 : top_x - 1);
} else {
openfile->current = bot;
openfile->current_x = bot_x;
}
}
#endif /* !NANO_TINY */
if (canceled != NULL)
*canceled = FALSE;
findnextstr_wrap_reset();
while (findnextstr(
#ifndef DISABLE_SPELLER
whole_word_only,
#endif
real_current, *real_current_x, needle, &match_len)) {
int i = 0;
#ifndef NANO_TINY
if (old_mark_set) {
/* When we've found an occurrence outside of the marked region,
* stop the fanfare. */
if (openfile->current->lineno > bot->lineno ||
openfile->current->lineno < top->lineno ||
(openfile->current == bot && openfile->current_x > bot_x) ||
(openfile->current == top && openfile->current_x < top_x))
break;
}
#endif
/* Indicate that we found the search string. */
if (numreplaced == -1)
numreplaced = 0;
if (!replaceall) {
size_t xpt = xplustabs();
char *exp_word = display_string(openfile->current->data,
xpt, strnlenpt(openfile->current->data,
openfile->current_x + match_len) - xpt, FALSE);
edit_refresh();
curs_set(0);
do_replace_highlight(TRUE, exp_word);
/* TRANSLATORS: This is a prompt. */
i = do_yesno_prompt(TRUE, _("Replace this instance?"));
do_replace_highlight(FALSE, exp_word);
free(exp_word);
curs_set(1);
if (i == -1) { /* We canceled the replace. */
if (canceled != NULL)
*canceled = TRUE;
break;
}
}
if (i > 0 || replaceall) { /* Yes, replace it!!!! */
char *copy;
size_t length_change;
#ifndef NANO_TINY
add_undo(REPLACE);
#endif
if (i == 2)
replaceall = TRUE;
copy = replace_line(needle);
length_change = strlen(copy) - strlen(openfile->current->data);
#ifndef NANO_TINY
/* If the mark was on and (mark_begin, mark_begin_x) was the
* top of it, don't change mark_begin_x. */
if (!old_mark_set || !right_side_up) {
/* Keep mark_begin_x in sync with the text changes. */
if (openfile->current == openfile->mark_begin &&
openfile->mark_begin_x > openfile->current_x) {
if (openfile->mark_begin_x < openfile->current_x +
match_len)
openfile->mark_begin_x = openfile->current_x;
else
openfile->mark_begin_x += length_change;
bot_x = openfile->mark_begin_x;
}
}
/* If the mark was on and (current, current_x) was the top
* of it, don't change real_current_x. */
if (!old_mark_set || right_side_up) {
#endif
/* Keep real_current_x in sync with the text changes. */
if (openfile->current == real_current &&
openfile->current_x <= *real_current_x) {
if (*real_current_x < openfile->current_x + match_len)
*real_current_x = openfile->current_x + match_len;
*real_current_x += length_change;
#ifndef NANO_TINY
bot_x = *real_current_x;
}
#endif
}
/* Set the cursor at the last character of the replacement
* text, so searching will resume after the replacement
* text. Note that current_x might be set to (size_t)-1
* here. */
#ifndef NANO_TINY
if (!ISSET(BACKWARDS_SEARCH))
#endif
openfile->current_x += match_len + length_change - 1;
/* Clean up. */
openfile->totsize += mbstrlen(copy) -
mbstrlen(openfile->current->data);
free(openfile->current->data);
openfile->current->data = copy;
#ifndef DISABLE_COLOR
/* Reset the precalculated multiline-regex hints only when
* the first replacement has been made. */
if (numreplaced == 0)
reset_multis(openfile->current, TRUE);
#endif
if (!replaceall) {
#ifndef DISABLE_COLOR
/* If color syntaxes are available and turned on, we
* need to call edit_refresh(). */
if (openfile->colorstrings != NULL &&
!ISSET(NO_COLOR_SYNTAX))
edit_refresh();
else
#endif
update_line(openfile->current, openfile->current_x);
}
set_modified();
numreplaced++;
}
}
if (numreplaced == -1)
not_found_msg(needle);
#ifndef NANO_TINY
if (old_mark_set)
openfile->mark_set = TRUE;
#endif
/* If the NO_NEWLINES flag isn't set, and text has been added to the
* magicline, make a new magicline. */
if (!ISSET(NO_NEWLINES) && openfile->filebot->data[0] != '\0')
new_magicline();
return numreplaced;
}
/* If scroll_only is FALSE, move down one line. If scroll_only is TRUE,
* scroll down one line without scrolling the cursor. */
void do_down(bool scroll_only)
{
#ifndef NANO_TINY
int amount = 0, enough;
filestruct *topline;
#endif
size_t was_column = xplustabs();
/* If we're at the bottom of the file, get out. */
if (openfile->current == openfile->filebot)
return;
assert(ISSET(SOFTWRAP) || openfile->current_y ==
openfile->current->lineno - openfile->edittop->lineno);
assert(openfile->current->next != NULL);
#ifndef NANO_TINY
if (ISSET(SOFTWRAP)) {
/* Compute the number of lines to scroll. */
amount = strlenpt(openfile->current->data) / editwincols -
xplustabs() / editwincols +
strlenpt(openfile->current->next->data) / editwincols +
openfile->current_y - editwinrows + 2;
topline = openfile->edittop;
/* Reduce the amount when there are overlong lines at the top. */
for (enough = 1; enough < amount; enough++) {
amount -= strlenpt(topline->data) / editwincols;
if (amount > 0)
topline = topline->next;
if (amount < enough) {
amount = enough;
break;
}
}
}
#endif
/* Move to the next line in the file. */
openfile->current = openfile->current->next;
openfile->current_x = actual_x(openfile->current->data,
openfile->placewewant);
/* If scroll_only is FALSE and if we're on the last line of the
* edit window, scroll the edit window down one line if we're in
* smooth scrolling mode, or down half a page if we're not. If
* scroll_only is TRUE, scroll the edit window down one line
* unconditionally. */
#ifndef NANO_TINY
if (openfile->current_y == editwinrows - 1 || amount > 0 || scroll_only) {
if (amount < 1 || scroll_only)
amount = 1;
edit_scroll(DOWNWARD, (ISSET(SMOOTH_SCROLL) || scroll_only) ?
amount : editwinrows / 2 + 1);
if (ISSET(SOFTWRAP)) {
refresh_needed = TRUE;
return;
}
}
#else
if (openfile->current_y == editwinrows - 1)
edit_scroll(DOWNWARD, editwinrows / 2 + 1);
#endif
/* If the lines weren't already redrawn, see if they need to be. */
if (openfile->current_y < editwinrows - 1) {
/* Redraw the prior line if it was horizontally scrolled. */
if (need_horizontal_scroll(was_column, 0))
update_line(openfile->current->prev, 0);
/* Redraw the current line if it needs to be horizontally scrolled. */
if (need_horizontal_scroll(0, xplustabs()))
update_line(openfile->current, openfile->current_x);
}
}
/* Move text from the current linestruct into the cutbuffer. If
* copy_text is TRUE, copy the text back into the linestruct afterward.
* If cut_till_eof is TRUE, move all text from the current cursor
* position to the end of the file into the cutbuffer. */
void do_cut_text(
#ifndef NANO_TINY
bool copy_text, bool cut_till_eof, bool undoing
#else
void
#endif
)
{
#ifndef NANO_TINY
linestruct *cb_save = NULL;
/* The current end of the cutbuffer, before we add text to
* it. */
size_t cb_save_len = 0;
/* The length of the string at the current end of the cutbuffer,
* before we add text to it. */
bool old_no_newlines = ISSET(NO_NEWLINES);
#endif
assert(openfile->current != NULL && openfile->current->data != NULL);
/* If keep_cutbuffer is FALSE and the cutbuffer isn't empty, blow
* away the text in the cutbuffer. */
if (!keep_cutbuffer && cutbuffer != NULL) {
free_filestruct(cutbuffer);
cutbuffer = NULL;
#ifdef DEBUG
fprintf(stderr, "Blew away cutbuffer =)\n");
#endif
}
#ifndef NANO_TINY
if (copy_text) {
if (cutbuffer != NULL) {
/* If the cutbuffer isn't empty, save where it currently
* ends. This is where we'll add the new text. */
cb_save = cutbottom;
cb_save_len = strlen(cutbottom->data);
}
/* Set NO_NEWLINES to TRUE, so that we don't disturb the last
* line of the file when moving text to the cutbuffer. */
SET(NO_NEWLINES);
}
#endif
/* Set keep_cutbuffer to TRUE, so that the text we're going to move
* into the cutbuffer will be added to the text already in the
* cutbuffer instead of replacing it. */
keep_cutbuffer = TRUE;
#ifndef NANO_TINY
if (cut_till_eof) {
/* If cut_till_eof is TRUE, move all text up to the end of the
* file into the cutbuffer. */
cut_to_eof();
} else if (openfile->mark_set) {
/* If the mark is on, move the marked text to the cutbuffer, and
* turn the mark off. */
cut_marked();
openfile->mark_set = FALSE;
} else if (ISSET(CUT_TO_END))
/* If the CUT_TO_END flag is set, move all text up to the end of
* the line into the cutbuffer. */
cut_to_eol();
else
#endif
/* Move the entire line into the cutbuffer. */
cut_line();
#ifndef NANO_TINY
if (copy_text) {
/* Copy the text in the cutbuffer, starting at its saved end if
* there is one, back into the linestruct. This effectively
* uncuts the text we just cut without marking the file as
* modified. */
if (cutbuffer != NULL) {
if (cb_save != NULL) {
cb_save->data += cb_save_len;
copy_from_filestruct(cb_save);
cb_save->data -= cb_save_len;
} else
copy_from_filestruct(cutbuffer);
/* Set the current place we want to where the text from the
* cutbuffer ends. */
openfile->placewewant = xplustabs();
}
/* Set NO_NEWLINES back to what it was before, since we're done
* disturbing the text. */
if (!old_no_newlines)
UNSET(NO_NEWLINES);
} else if (!undoing)
update_undo(cut_till_eof ? CUT_EOF : CUT);
/* Leave the text in the cutbuffer, and mark the file as
* modified. */
if (!copy_text)
#endif /* !NANO_TINY */
set_modified();
/* Update the screen. */
edit_refresh_needed = TRUE;
#ifndef DISABLE_COLOR
reset_multis(openfile->current, FALSE);
#endif
#ifdef DEBUG
dump_filestruct(cutbuffer);
#endif
}
/* Look for needle, starting at (current, current_x). begin is the line
* where we first started searching, at column begin_x. The return
* value specifies whether we found anything. If we did, set needle_len
* to the length of the string we found if it isn't NULL. */
bool findnextstr(
#ifndef DISABLE_SPELLER
bool whole_word_only,
#endif
const filestruct *begin, size_t begin_x,
const char *needle, size_t *needle_len)
{
size_t found_len;
/* The length of the match we find. */
size_t current_x_find = 0;
/* The location in the current line of the match we find. */
ssize_t current_y_find = openfile->current_y;
filestruct *fileptr = openfile->current;
const char *rev_start = fileptr->data, *found = NULL;
time_t lastkbcheck = time(NULL);
/* rev_start might end up 1 character before the start or after the
* end of the line. This won't be a problem because strstrwrapper()
* will return immediately and say that no match was found, and
* rev_start will be properly set when the search continues on the
* previous or next line. */
rev_start +=
#ifndef NANO_TINY
ISSET(BACKWARDS_SEARCH) ?
((openfile->current_x == 0) ? -1 : move_mbleft(fileptr->data, openfile->current_x)) :
#endif
move_mbright(fileptr->data, openfile->current_x);
/* Look for needle in the current line we're searching. */
enable_nodelay();
while (TRUE) {
if (time(NULL) - lastkbcheck > 1) {
int input = parse_kbinput(edit);
lastkbcheck = time(NULL);
if (input && func_from_key(&input) == do_cancel) {
statusbar(_("Cancelled"));
return FALSE;
}
}
found = strstrwrapper(fileptr->data, needle, rev_start);
/* We've found a potential match. */
if (found != NULL) {
#ifndef DISABLE_SPELLER
bool found_whole = FALSE;
/* Is this potential match a whole word? */
#endif
/* Set found_len to the length of the potential match. */
found_len =
#ifdef HAVE_REGEX_H
ISSET(USE_REGEXP) ?
regmatches[0].rm_eo - regmatches[0].rm_so :
#endif
strlen(needle);
#ifndef DISABLE_SPELLER
/* If we're searching for whole words, see if this potential
* match is a whole word. */
if (whole_word_only) {
char *word = mallocstrncpy(NULL, found, found_len + 1);
word[found_len] = '\0';
found_whole = is_whole_word(found - fileptr->data,
fileptr->data, word);
free(word);
}
/* If we're searching for whole words and this potential
* match isn't a whole word, continue searching. */
if (!whole_word_only || found_whole)
#endif
break;
}
if (search_last_line) {
/* We've finished processing the file, so get out. */
not_found_msg(needle);
disable_nodelay();
return FALSE;
}
/* Move to the previous or next line in the file. */
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH)) {
fileptr = fileptr->prev;
current_y_find--;
} else {
#endif
fileptr = fileptr->next;
current_y_find++;
#ifndef NANO_TINY
}
#endif
if (fileptr == NULL) {
/* We've reached the start or end of the buffer, so wrap around. */
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH)) {
fileptr = openfile->filebot;
current_y_find = editwinrows - 1;
} else {
#endif
fileptr = openfile->fileage;
current_y_find = 0;
#ifndef NANO_TINY
}
#endif
statusbar(_("Search Wrapped"));
}
if (fileptr == begin)
/* We've reached the original starting line. */
search_last_line = TRUE;
rev_start = fileptr->data;
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH))
rev_start += strlen(fileptr->data);
#endif
}
/* We found an instance. */
current_x_find = found - fileptr->data;
/* Ensure we haven't wrapped around again! */
if (search_last_line &&
#ifndef NANO_TINY
((!ISSET(BACKWARDS_SEARCH) && current_x_find > begin_x) ||
(ISSET(BACKWARDS_SEARCH) && current_x_find < begin_x))
#else
current_x_find > begin_x
#endif
) {
not_found_msg(needle);
disable_nodelay();
return FALSE;
}
disable_nodelay();
/* We've definitely found something. */
openfile->current = fileptr;
openfile->current_x = current_x_find;
openfile->placewewant = xplustabs();
openfile->current_y = current_y_find;
/* needle_len holds the length of needle. */
if (needle_len != NULL)
*needle_len = found_len;
return TRUE;
}
/* Move to the next word in the file. If allow_punct is TRUE, treat
* punctuation as part of a word. If allow_update is TRUE, update the
* screen afterwards. Return TRUE if we started on a word, and FALSE
* otherwise. */
bool do_next_word(bool allow_punct, bool allow_update)
{
size_t pww_save = openfile->placewewant;
filestruct *current_save = openfile->current;
char *char_mb;
int char_mb_len;
bool end_line = FALSE, started_on_word = FALSE;
assert(openfile->current != NULL && openfile->current->data != NULL);
char_mb = charalloc(mb_cur_max());
/* Move forward until we find the character after the last letter of
* the current word. */
while (!end_line) {
char_mb_len = parse_mbchar(openfile->current->data +
openfile->current_x, char_mb, NULL);
/* If we've found it, stop moving forward through the current
* line. */
if (!is_word_mbchar(char_mb, allow_punct))
break;
/* If we haven't found it, then we've started on a word, so set
* started_on_word to TRUE. */
started_on_word = TRUE;
if (openfile->current->data[openfile->current_x] == '\0')
end_line = TRUE;
else
openfile->current_x += char_mb_len;
}
/* Move forward until we find the first letter of the next word. */
if (openfile->current->data[openfile->current_x] == '\0')
end_line = TRUE;
else
openfile->current_x += char_mb_len;
for (; openfile->current != NULL;
openfile->current = openfile->current->next) {
while (!end_line) {
char_mb_len = parse_mbchar(openfile->current->data +
openfile->current_x, char_mb, NULL);
/* If we've found it, stop moving forward through the
* current line. */
if (is_word_mbchar(char_mb, allow_punct))
break;
if (openfile->current->data[openfile->current_x] == '\0')
end_line = TRUE;
else
openfile->current_x += char_mb_len;
}
/* If we've found it, stop moving forward to the beginnings of
* subsequent lines. */
if (!end_line)
break;
if (openfile->current != openfile->filebot) {
end_line = FALSE;
openfile->current_x = 0;
}
}
free(char_mb);
/* If we haven't found it, move to the end of the file. */
if (openfile->current == NULL)
openfile->current = openfile->filebot;
openfile->placewewant = xplustabs();
/* If allow_update is TRUE, update the screen. */
if (allow_update)
edit_redraw(current_save, pww_save);
/* Return whether we started on a word. */
return started_on_word;
}
/* Move to the previous word in the file. If allow_punct is TRUE, treat
* punctuation as part of a word. If allow_update is TRUE, update the
* screen afterwards. Return TRUE if we started on a word, and FALSE
* otherwise. */
bool do_prev_word(bool allow_punct, bool allow_update)
{
size_t pww_save = openfile->placewewant;
filestruct *current_save = openfile->current;
char *char_mb;
int char_mb_len;
bool begin_line = FALSE, started_on_word = FALSE;
assert(openfile->current != NULL && openfile->current->data != NULL);
char_mb = charalloc(mb_cur_max());
/* Move backward until we find the character before the first letter
* of the current word. */
while (!begin_line) {
char_mb_len = parse_mbchar(openfile->current->data +
openfile->current_x, char_mb, NULL);
/* If we've found it, stop moving backward through the current
* line. */
if (!is_word_mbchar(char_mb, allow_punct))
break;
/* If we haven't found it, then we've started on a word, so set
* started_on_word to TRUE. */
started_on_word = TRUE;
if (openfile->current_x == 0)
begin_line = TRUE;
else
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
}
/* Move backward until we find the last letter of the previous
* word. */
if (openfile->current_x == 0)
begin_line = TRUE;
else
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
for (; openfile->current != NULL;
openfile->current = openfile->current->prev) {
while (!begin_line) {
char_mb_len = parse_mbchar(openfile->current->data +
openfile->current_x, char_mb, NULL);
/* If we've found it, stop moving backward through the
* current line. */
if (is_word_mbchar(char_mb, allow_punct))
break;
if (openfile->current_x == 0)
begin_line = TRUE;
else
openfile->current_x =
move_mbleft(openfile->current->data,
openfile->current_x);
}
/* If we've found it, stop moving backward to the ends of
* previous lines. */
if (!begin_line)
break;
if (openfile->current != openfile->fileage) {
begin_line = FALSE;
openfile->current_x = strlen(openfile->current->prev->data);
}
}
/* If we haven't found it, move to the beginning of the file. */
if (openfile->current == NULL)
openfile->current = openfile->fileage;
/* If we've found it, move backward until we find the character
* before the first letter of the previous word. */
else if (!begin_line) {
if (openfile->current_x == 0)
begin_line = TRUE;
else
openfile->current_x = move_mbleft(openfile->current->data,
openfile->current_x);
while (!begin_line) {
char_mb_len = parse_mbchar(openfile->current->data +
openfile->current_x, char_mb, NULL);
/* If we've found it, stop moving backward through the
* current line. */
if (!is_word_mbchar(char_mb, allow_punct))
break;
if (openfile->current_x == 0)
begin_line = TRUE;
else
openfile->current_x =
move_mbleft(openfile->current->data,
openfile->current_x);
}
/* If we've found it, move forward to the first letter of the
* previous word. */
if (!begin_line)
openfile->current_x += char_mb_len;
}
free(char_mb);
openfile->placewewant = xplustabs();
/* If allow_update is TRUE, update the screen. */
if (allow_update)
edit_redraw(current_save, pww_save);
/* Return whether we started on a word. */
return started_on_word;
}
