/* 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();
}
/* 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;
}
/* edit_draw() takes care of the job of actually painting a line into
* the edit window. fileptr is the line to be painted, at row line of
* the window. converted is the actual string to be written to the
* window, with tabs and control characters replaced by strings of
* regular characters. start is the column number of the first
* character of this page. That is, the first character of converted
* corresponds to character number actual_x(fileptr->data, start) of the
* line. */
void edit_draw(filestruct *fileptr, const char *converted, int line, size_t start)
{
size_t startpos = actual_x(fileptr->data, start);
/* The position in fileptr->data of the leftmost character
* that displays at least partially on the window. */
size_t endpos = actual_x(fileptr->data, start + COLS - 1) + 1;
/* The position in fileptr->data of the first character that is
* completely off the window to the right.
*
* Note that endpos might be beyond the null terminator of the
* string. */
assert(openfile != openfiles.end() && fileptr != NULL && converted != NULL);
assert(strlenpt(converted) <= COLS);
/* Just paint the string in any case (we'll add color or reverse on
* just the text that needs it). */
mvwaddstr(edit, line, 0, converted);
/* Tell ncurses to really redraw the line without trying to optimize
* for what it thinks is already there, because it gets it wrong in
* the case of a wide character in column zero. */
#ifndef USE_SLANG
wredrawln(edit, line, 1);
#endif
/* If color syntaxes are available and turned on, we need to display
* them. */
if (!openfile->colorstrings.empty() && !ISSET(NO_COLOR_SYNTAX)) {
/* Set up multi-line color data for this line if it's not yet calculated */
if (fileptr->multidata.empty() && openfile->syntax && openfile->syntax->nmultis > 0) {
fileptr->multidata.resize(openfile->syntax->nmultis, -1); // assume that '-1' applies until we know otherwise
}
for (auto tmpcolor : openfile->colorstrings) {
int x_start;
/* Starting column for mvwaddnstr. Zero-based. */
int paintlen = 0;
/* Number of chars to paint on this line. There are
* COLS characters on a whole line. */
size_t index;
/* Index in converted where we paint. */
regmatch_t startmatch;
/* Match position for start_regex. */
regmatch_t endmatch;
/* Match position for end_regex. */
if (tmpcolor->bright) {
wattron(edit, A_BOLD);
}
if (tmpcolor->underline) {
wattron(edit, A_UNDERLINE);
}
wattron(edit, COLOR_PAIR(tmpcolor->pairnum));
/* Two notes about regexec(). A return value of zero means
* that there is a match. Also, rm_eo is the first
* non-matching character after the match. */
/* First case,tmpcolor is a single-line expression. */
if (tmpcolor->end == NULL) {
size_t k = 0;
/* We increment k by rm_eo, to move past the end of the
* last match. Even though two matches may overlap, we
* want to ignore them, so that we can highlight e.g. C
* strings correctly. */
while (k < endpos) {
/* Note the fifth parameter to regexec(). It says
* not to match the beginning-of-line character
* unless k is zero. If regexec() returns
* REG_NOMATCH, there are no more matches in the
* line. */
if (regexec(tmpcolor->start, &fileptr->data[k], 1, &startmatch, (k == 0) ? 0 : REG_NOTBOL) == REG_NOMATCH) {
break;
}
/* Translate the match to the beginning of the
* line. */
startmatch.rm_so += k;
startmatch.rm_eo += k;
/* Skip over a zero-length regex match. */
if (startmatch.rm_so == startmatch.rm_eo) {
startmatch.rm_eo++;
} else if (startmatch.rm_so < endpos && startmatch.rm_eo > startpos) {
x_start = (startmatch.rm_so <= startpos) ? 0 : strnlenpt(fileptr->data, startmatch.rm_so) - start;
index = actual_x(converted, x_start);
paintlen = actual_x(converted + index, strnlenpt(fileptr->data, startmatch.rm_eo) - start - x_start);
assert(0 <= x_start && 0 <= paintlen);
mvwaddnstr(edit, line, x_start, converted + index, paintlen);
}
k = startmatch.rm_eo;
}
} else if (!fileptr->multidata.empty() && fileptr->multidata[tmpcolor->id] != CNONE) {
/* This is a multi-line regex. There are two steps.
* First, we have to see if the beginning of the line is
* colored by a start on an earlier line, and an end on
* this line or later.
*
* We find the first line before fileptr matching the
* start. If every match on that line is followed by an
* end, then go to step two. Otherwise, find the next
* line after start_line matching the end. If that line
* is not before fileptr, then paint the beginning of
* this line. */
const filestruct *start_line = fileptr->prev;
/* The first line before fileptr matching start. */
regoff_t start_col;
/* Where it starts in that line. */
const filestruct *end_line;
short md = fileptr->multidata[tmpcolor->id];
if (md == -1) {
fileptr->multidata[tmpcolor->id] = CNONE; /* until we find out otherwise */
} else if (md == CNONE) {
unset_formatting(tmpcolor);
continue;
} else if (md == CWHOLELINE) {
mvwaddnstr(edit, line, 0, converted, -1);
unset_formatting(tmpcolor);
continue;
} else if (md == CBEGINBEFORE) {
regexec(tmpcolor->end, fileptr->data, 1, &endmatch, 0);
paintlen = actual_x(converted, strnlenpt(fileptr->data, endmatch.rm_eo) - start);
mvwaddnstr(edit, line, 0, converted, paintlen);
unset_formatting(tmpcolor);
continue;
}
while (start_line != NULL && regexec(tmpcolor->start, start_line->data, 1, &startmatch, 0) == REG_NOMATCH) {
/* If there is an end on this line, there is no need
* to look for starts on earlier lines. */
if (regexec(tmpcolor->end, start_line->data, 0, NULL, 0) == 0) {
goto step_two;
}
start_line = start_line->prev;
}
/* If the found start has been qualified as an end earlier, believe it and skip to the next step. */
if (start_line != NULL && !start_line->multidata.empty() && start_line->multidata[tmpcolor->id] == CBEGINBEFORE) {
goto step_two;
}
/* Skip over a zero-length regex match. */
if (startmatch.rm_so == startmatch.rm_eo) {
startmatch.rm_eo++;
} else {
/* No start found, so skip to the next step. */
if (start_line == NULL) {
goto step_two;
}
/* Now start_line is the first line before fileptr
* containing a start match. Is there a start on
* this line not followed by an end on this line? */
start_col = 0;
while (true) {
start_col += startmatch.rm_so;
startmatch.rm_eo -= startmatch.rm_so;
if (regexec(tmpcolor->end, start_line->data + start_col + startmatch.rm_eo, 0, NULL, (start_col + startmatch.rm_eo == 0) ? 0 : REG_NOTBOL) == REG_NOMATCH) {
/* No end found after this start. */
break;
}
start_col++;
if (regexec(tmpcolor->start, start_line->data + start_col, 1, &startmatch, REG_NOTBOL) == REG_NOMATCH) {
/* No later start on this line. */
goto step_two;
}
}
/* Indeed, there is a start not followed on this
* line by an end. */
/* We have already checked that there is no end
* before fileptr and after the start. Is there an
* end after the start at all? We don't paint
* unterminated starts. */
end_line = fileptr;
while (end_line != NULL && regexec(tmpcolor->end, end_line->data, 1, &endmatch, 0) == REG_NOMATCH) {
end_line = end_line->next;
}
/* No end found, or it is too early. */
if (end_line == NULL || (end_line == fileptr && endmatch.rm_eo <= startpos)) {
goto step_two;
}
/* Now paint the start of fileptr. If the start of
* fileptr is on a different line from the end,
* paintlen is -1, meaning that everything on the
* line gets painted. Otherwise, paintlen is the
* expanded location of the end of the match minus
* the expanded location of the beginning of the
* page. */
if (end_line != fileptr) {
paintlen = -1;
fileptr->multidata[tmpcolor->id] = CWHOLELINE;
} else {
paintlen = actual_x(converted, strnlenpt(fileptr->data, endmatch.rm_eo) - start);
fileptr->multidata[tmpcolor->id] = CBEGINBEFORE;
}
mvwaddnstr(edit, line, 0, converted, paintlen);
/* If the whole line has been painted, don't bother looking for any more starts. */
if (paintlen < 0) {
continue;
}
step_two:
/* Second step, we look for starts on this line. */
start_col = 0;
while (start_col < endpos) {
if (regexec(tmpcolor->start, fileptr->data + start_col, 1, &startmatch, (start_col == 0) ? 0 : REG_NOTBOL) == REG_NOMATCH || start_col + startmatch.rm_so >= endpos) {
/* No more starts on this line. */
break;
}
/* Translate the match to be relative to the
* beginning of the line. */
startmatch.rm_so += start_col;
startmatch.rm_eo += start_col;
x_start = (startmatch.rm_so <= startpos) ? 0 : strnlenpt(fileptr->data, startmatch.rm_so) - start;
index = actual_x(converted, x_start);
if (regexec(tmpcolor->end, fileptr->data + startmatch.rm_eo, 1, &endmatch, (startmatch.rm_eo == 0) ? 0 : REG_NOTBOL) == 0) {
/* Translate the end match to be relative to the beginning of the line. */
endmatch.rm_so += startmatch.rm_eo;
endmatch.rm_eo += startmatch.rm_eo;
/* There is an end on this line. But does
* it appear on this page, and is the match
* more than zero characters long? */
if (endmatch.rm_eo > startpos && endmatch.rm_eo > startmatch.rm_so) {
paintlen = actual_x(converted + index, strnlenpt(fileptr->data, endmatch.rm_eo) - start - x_start);
assert(0 <= x_start && x_start < COLS);
mvwaddnstr(edit, line, x_start, converted + index, paintlen);
if (paintlen > 0) {
fileptr->multidata[tmpcolor->id] = CSTARTENDHERE;
}
}
} else {
/* There is no end on this line. But we
* haven't yet looked for one on later
* lines. */
end_line = fileptr->next;
while (end_line != NULL && regexec(tmpcolor->end, end_line->data, 0, NULL, 0) == REG_NOMATCH) {
end_line = end_line->next;
}
if (end_line != NULL) {
assert(0 <= x_start && x_start < COLS);
mvwaddnstr(edit, line, x_start, converted + index, -1);
/* We painted to the end of the line, so
* don't bother checking any more
* starts. */
fileptr->multidata[tmpcolor->id] = CENDAFTER;
break;
}
}
start_col = startmatch.rm_so + 1;
}
}
}
unset_formatting(tmpcolor);
}
}
/* If the mark is on, we need to display it. */
if (openfile->mark_set && (fileptr->lineno <=
openfile->mark_begin->lineno || fileptr->lineno <=
openfile->current->lineno) && (fileptr->lineno >=
openfile->mark_begin->lineno || fileptr->lineno >=
openfile->current->lineno)) {
/* fileptr is at least partially selected. */
const filestruct *top;
/* Either current or mark_begin, whichever is first. */
size_t top_x;
/* current_x or mark_begin_x, corresponding to top. */
const filestruct *bot;
size_t bot_x;
int x_start;
/* Starting column for mvwaddnstr(). Zero-based. */
int paintlen;
/* Number of characters to paint on this line. There are
* COLS characters on a whole line. */
size_t index;
/* Index in converted where we paint. */
mark_order(&top, &top_x, &bot, &bot_x, NULL);
if (top->lineno < fileptr->lineno || top_x < startpos) {
top_x = startpos;
}
if (bot->lineno > fileptr->lineno || bot_x > endpos) {
bot_x = endpos;
}
/* The selected bit of fileptr is on this page. */
if (top_x < endpos && bot_x > startpos) {
assert(startpos <= top_x);
/* x_start is the expanded location of the beginning of the
* mark minus the beginning of the page. */
x_start = strnlenpt(fileptr->data, top_x) - start;
/* If the end of the mark is off the page, paintlen is -1,
* meaning that everything on the line gets painted.
* Otherwise, paintlen is the expanded location of the end
* of the mark minus the expanded location of the beginning
* of the mark. */
if (bot_x >= endpos) {
paintlen = -1;
} else
paintlen = strnlenpt(fileptr->data, bot_x) - (x_start + start);
/* If x_start is before the beginning of the page, shift
* paintlen x_start characters to compensate, and put
* x_start at the beginning of the page. */
if (x_start < 0) {
paintlen += x_start;
x_start = 0;
}
assert(x_start >= 0 && x_start <= strlen(converted));
index = actual_x(converted, x_start);
if (paintlen > 0) {
paintlen = actual_x(converted + index, paintlen);
}
set_color(edit, interface_colors[FUNCTION_TAG]);
mvwaddnstr(edit, line, x_start, converted + index, paintlen);
clear_color(edit, interface_colors[FUNCTION_TAG]);
}
}
}