using namespace std;
+ostream *log;
+
const int buffer_size = 1024;
const int nb_lines_max = 100000;
-void build_display(int *screen_line, int *line, int nb_lines, char **lines, char *regexp) {
+int match(char *string, char *regexp) {
+ return strstr(string, regexp) != 0;
+}
+
+void update_screen(int *current_line, int motion,
+ int nb_lines, char **lines,
+ char *regexp, int noblink) {
+
char buffer[buffer_size];
- int maxx = getmaxx(stdscr);
- int maxy = min(buffer_size-2, getmaxy(stdscr));
+ int console_width = getmaxx(stdscr);
+ int console_height = getmaxy(stdscr);
- // clear(); // Cleaning the window
+ if(!noblink) {
+ clear();
+ }
use_default_colors();
printw("\n");
int nb_printed_lines = 1, last_printer_line = -1;
- int y = 0;
- while(nb_printed_lines < maxy && y < nb_lines) {
- if(strstr(lines[y], regexp) &&
- (last_printer_line < 0 || strcmp(lines[y], lines[last_printer_line]))) {
- int k = 0;
+ int new_line;
+ if(motion >= 0) {
+ new_line = *current_line + motion;
+ while(new_line < nb_lines && !match(lines[new_line], regexp)) {
+ new_line++;
+ }
+ if(new_line == nb_lines) {
+ new_line = *current_line;
+ while(new_line >= 0 && ! match(lines[new_line], regexp)) {
+ new_line--;
+ }
+ }
+ } else {
+
+ new_line = *current_line - 1;
+ while(new_line >= 0 && ! match(lines[new_line], regexp)) {
+ new_line--;
+ }
- while(lines[y][k] && k < buffer_size - 2 && k < maxx - 1) {
- buffer[k] = lines[y][k];
- k++;
+ if(new_line < 0) {
+ new_line = *current_line;
+ while(new_line < nb_lines && !match(lines[new_line], regexp)) {
+ new_line++;
}
+ if(new_line == nb_lines) {
+ new_line = -1;
+ }
+ }
+ }
- while(k < maxx - 1) {
- buffer[k++] = ' ';
+ // Here new_line is either a line number matching the regexp, or -1
+
+ if(new_line >= 0) {
+ int first_line = new_line, last_line = new_line, nb_match = 1;
+
+ while(nb_match < console_height && (first_line > 0 || last_line < nb_lines - 1)) {
+
+ if(first_line > 0) {
+ first_line--;
+ while(first_line > 0 && !match(lines[first_line], regexp)) {
+ first_line--;
+ }
+ if(match(lines[first_line], regexp)) {
+ nb_match++;
+ }
}
- buffer[k++] = '\n';
- buffer[k++] = '\0';
-
- if(nb_printed_lines == *line + 1) {
- attron(COLOR_PAIR(2));
- printw(buffer);
- attroff(COLOR_PAIR(2));
- } else {
- printw(buffer);
+
+ if(last_line < nb_lines - 1) {
+ last_line++;
+ while(last_line < nb_lines - 1 && !match(lines[last_line], regexp)) {
+ last_line++;
+ }
+
+ if(match(lines[last_line], regexp)) {
+ nb_match++;
+ }
}
+ }
- last_printer_line = y;
- nb_printed_lines++;
+ for(int l = first_line; l <= last_line; l++) {
+ if(match(lines[l], regexp)) {
+ int k = 0;
+
+ while(lines[l][k] && k < buffer_size - 2 && k < console_width - 1) {
+ buffer[k] = lines[l][k];
+ k++;
+ }
+
+ if(noblink) {
+ while(k < console_width - 1) {
+ buffer[k++] = ' ';
+ }
+ }
+ buffer[k++] = '\n';
+ buffer[k++] = '\0';
+
+ if(l == new_line) {
+ attron(COLOR_PAIR(2));
+ printw(buffer);
+ attroff(COLOR_PAIR(2));
+ } else {
+ printw(buffer);
+ }
+
+ last_printer_line = l;
+ nb_printed_lines++;
+ }
}
- y++;
+
+ *current_line = new_line;
}
- { // Erase the rest of the window. That's slightly ugly.
+ if(noblink) { // Erase the rest of the window. That's slightly ugly.
int k = 0;
- while(k < maxx - 1) {
+ while(k < console_width - 1) {
buffer[k++] = ' ';
}
buffer[k++] = '\n';
buffer[k++] = '\0';
- for(int l = nb_printed_lines; l < maxy; l++) {
+ for(int l = nb_printed_lines; l < console_height; l++) {
printw(buffer);
}
}
move(0, 0);
attron(COLOR_PAIR(1));
sprintf(buffer, "%d/%d pattern: %s", nb_printed_lines - 1, nb_lines, regexp);
- for(int k = strlen(buffer); k < maxx - 1; k++) buffer[k] = ' ';
- buffer[maxx-1] = '\0';
+ for(int k = strlen(buffer); k < console_width - 1; k++) buffer[k] = ' ';
+ buffer[console_width-1] = '\0';
printw(buffer);
attroff(COLOR_PAIR(1));
int main(int argc, char **argv) {
char buffer[buffer_size];
char *lines[nb_lines_max];
+ int noblink = 0;
+
+ log = new fstream("/tmp/selector.log");
char *file_name;
char stdin_name[] = "/dev/stdin";
int key;
- int line = 0, screen_line = 0;
+ int line = 0;
- build_display(&screen_line, &line, nb_lines, lines, regexp);
+ update_screen(&line, 0,
+ nb_lines, lines,
+ regexp, noblink);
do {
key = getch();
+ int motion = 0;
+
if(key >= ' ' && key <= 'z') {
regexp[regexp_point++] = key;
regexp[regexp_point] = '\0';
}
else if(key == KEY_UP || key == '\10') {
- if(line > 0) {
- line--;
- }
+ motion = -1;
}
else if(key == KEY_DOWN || key == '\ e') {
- line++;
+ motion = 1;
}
- build_display(&screen_line, &line, nb_lines, lines, regexp);
+ update_screen(&line, motion, nb_lines, lines, regexp, noblink);
} while(key != '\n' && key != KEY_ENTER && key != '\a');
echo();
curs_set(1);
endwin();
+ // ofstream out("/tmp/selector.out");
+ // if(key == KEY_ENTER || key == '\n') {
+ // out << lines[highlighted_line] << endl;
+ // } else {
+ // out << endl;
+ // }
+ // out.flush();
+
for(int l = 0; l < nb_lines; l++) {
delete[] lines[l];
}
+ log->flush();
+ delete log;
+
return 0;
}