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static void find_open(Ted *ted) {
if (ted->active_buffer) {
ted->prev_active_buffer = ted->active_buffer;
ted->active_buffer = &ted->find_buffer;
ted->find = true;
ted->find_match_count = 0;
buffer_clear(&ted->find_buffer);
}
}
static void find_close(Ted *ted) {
ted->find = false;
ted->active_buffer = ted->prev_active_buffer;
}
static float find_menu_height(Ted *ted) {
Font *font = ted->font, *font_bold = ted->font_bold;
float char_height = text_font_char_height(font),
char_height_bold = text_font_char_height(font_bold);
Settings const *settings = &ted->settings;
float padding = settings->padding;
return char_height_bold + char_height + 2 * padding;
}
#define FIND_MAX_GROUPS 50
static void find_menu_frame(Ted *ted) {
Font *font = ted->font, *font_bold = ted->font_bold;
float const char_height = text_font_char_height(font),
char_height_bold = text_font_char_height(font_bold);
Settings const *settings = &ted->settings;
float const padding = settings->padding;
float const menu_height = find_menu_height(ted);
float const window_width = ted->window_width, window_height = ted->window_height;
u32 const *colors = settings->colors;
TextBuffer *buffer = ted->prev_active_buffer, *find_buffer = &ted->find_buffer;
assert(buffer);
String32 term = buffer_get_line(find_buffer, 0);
if (term.len) {
pcre2_match_data *match_data = pcre2_match_data_create(FIND_MAX_GROUPS, NULL);
if (match_data) {
PCRE2_SIZE *groups = pcre2_get_ovector_pointer(match_data);
// compile search term
int error = 0; PCRE2_SIZE error_pos = 0;
pcre2_code *code = pcre2_compile(term.str, term.len, PCRE2_LITERAL, &error, &error_pos, NULL);
if (code) {
if (find_buffer->modified) { // if search term has been changed,
// recompute match count
BufferPos best_scroll_candidate = {U32_MAX, U32_MAX}; // pos we will scroll to (scroll to first match)
BufferPos cursor_pos = buffer->cursor_pos;
u32 match_count = 0;
for (u32 line_idx = 0, end = buffer->nlines; line_idx < end; ++line_idx) {
Line *line = &buffer->lines[line_idx];
char32_t *str = line->str;
u32 len = line->len;
u32 start_index = 0;
while (start_index < len) {
int ret = pcre2_match(code, str, len, start_index, 0, match_data, NULL);
if (ret > 0) {
// a match!
BufferPos match_start_pos = {.line = line_idx, .index = (u32)groups[0]};
if (best_scroll_candidate.line == U32_MAX
|| (buffer_pos_cmp(best_scroll_candidate, cursor_pos) < 0 && buffer_pos_cmp(match_start_pos, cursor_pos) >= 0))
best_scroll_candidate = match_start_pos;
u32 match_end = (u32)groups[1];
++match_count;
start_index = match_end;
} else break;
}
}
ted->find_match_count = match_count;
find_buffer->modified = false;
if (best_scroll_candidate.line != U32_MAX)
buffer_scroll_to_pos(buffer, best_scroll_candidate);
}
// highlight matches
for (u32 line_idx = buffer_first_rendered_line(buffer), end = buffer_last_rendered_line(buffer);
line_idx < end; ++line_idx) {
Line *line = &buffer->lines[line_idx];
char32_t *str = line->str;
u32 len = line->len;
u32 start_index = 0;
while (start_index < len) {
int ret = pcre2_match(code, str, len, start_index, 0, match_data, NULL);
if (ret > 0) {
u32 match_start = (u32)groups[0];
u32 match_end = (u32)groups[1];
BufferPos p1 = {.line = line_idx, .index = match_start};
BufferPos p2 = {.line = line_idx, .index = match_end};
v2 pos1 = buffer_pos_to_pixels(buffer, p1);
v2 pos2 = buffer_pos_to_pixels(buffer, p2);
pos2.y += char_height;
gl_geometry_rect(rect4(pos1.x, pos1.y, pos2.x, pos2.y), colors[COLOR_FIND_HL]);
start_index = match_end;
} else break;
}
}
pcre2_code_free(code);
ted->find_invalid_pattern = false;
} else {
ted->find_invalid_pattern = true;
}
pcre2_match_data_free(match_data);
}
} else if (find_buffer->modified) {
ted->find_match_count = 0;
ted->find_invalid_pattern = false;
buffer_scroll_to_cursor(buffer);
}
float x1 = padding, y1 = window_height - menu_height, x2 = window_width - padding, y2 = window_height - padding;
Rect menu_bounds = rect4(x1, y1, x2, y2);
Rect find_buffer_bounds = rect4(x1 + padding, y1 + char_height_bold, x2 - padding, y1 + char_height_bold + char_height);
gl_geometry_rect(menu_bounds, colors[COLOR_MENU_BG]);
gl_geometry_rect_border(menu_bounds, 1, colors[COLOR_BORDER]);
{
float w = 0, h = 0;
char str[32];
strbuf_printf(str, U32_FMT " matches", ted->find_match_count);
text_get_size(font, str, &w, &h);
text_utf8(font, str, x2 - (w + padding), rect_ymid(find_buffer_bounds) - h * 0.5f, colors[COLOR_TEXT]);
x2 -= w + padding;
find_buffer_bounds.size.x -= w + padding;
}
text_utf8(font_bold, "Find...", x1 + padding, y1, colors[COLOR_TEXT]);
y1 += char_height_bold;
gl_geometry_draw();
text_render(font_bold);
buffer_render(&ted->find_buffer, find_buffer_bounds);
if (ted->find_invalid_pattern)
gl_geometry_rect(find_buffer_bounds, colors[COLOR_NO] & 0xFFFFFF3F); // invalid regex
else if (term.len && ted->find_match_count == 0)
gl_geometry_rect(find_buffer_bounds, colors[COLOR_CANCEL] & 0xFFFFFF3F); // no matches
gl_geometry_draw();
}
// go to next find result
static void find_next(Ted *ted) {
TextBuffer *buffer = ted->prev_active_buffer;
// create match data
pcre2_match_data *match_data = pcre2_match_data_create(FIND_MAX_GROUPS, NULL);
if (match_data) {
String32 term = buffer_get_line(&ted->find_buffer, 0);
int error = 0;
PCRE2_SIZE error_pos = 0;
// compile the search term
pcre2_code *code = pcre2_compile(term.str, term.len, PCRE2_LITERAL, &error, &error_pos, NULL);
if (code) {
// do the searching
BufferPos pos = buffer->cursor_pos;
size_t nsearches = 0;
u32 nlines = buffer->nlines;
// we need to search the starting line twice, because we might start at a non-zero index
while (nsearches < nlines + 1) {
Line *line = &buffer->lines[pos.line];
char32_t *str = line->str;
size_t len = line->len;
int ret = pcre2_match(code, str, len, pos.index, 0, match_data, NULL);
if (ret > 0) {
PCRE2_SIZE *groups = pcre2_get_ovector_pointer(match_data);
u32 match_start = (u32)groups[0];
u32 match_end = (u32)groups[1];
BufferPos pos_start = {.line = pos.line, .index = match_start};
BufferPos pos_end = {.line = pos.line, .index = match_end};
buffer_cursor_move_to_pos(buffer, pos_start);
buffer_select_to_pos(buffer, pos_end);
break;
}
++nsearches;
pos.index = 0;
pos.line += 1;
pos.line %= nlines;
}
pcre2_code_free(code);
} else {
char32_t buf[256] = {0};
size_t len = (size_t)pcre2_get_error_message(error, buf, sizeof buf - 1);
char *error_cstr = str32_to_utf8_cstr(str32(buf, len));
if (error_cstr) {
ted_seterr(ted, "Invalid search term (position %zu): %s.", (size_t)error_pos, error_cstr);
free(error_cstr);
}
}
pcre2_match_data_free(match_data);
} else {
ted_seterr(ted, "Out of memory.");
}
}
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