+
/*
* selector is a simple shell command for selection of strings with a
* dynamic pattern-matching.
*
* Copyright (c) 2009 Francois Fleuret
- * Written by Francois Fleuret <francois.fleuret@idiap.ch>
+ * Written by Francois Fleuret <francois@fleuret.org>
*
* This file is part of selector.
*
*
*/
-/*
-
- Here is the magical shell script for a smart bash-history. Note that
- the line remains in /tmp/selector.out, which may be a security
- concern.
+// To use it as a super-history-search:
+// ./selector -v -f ${HISTFILE}
- ./selector -f ~/.bash_history
- OLD_SETTINGS=`stty -g`
- stty -echo raw
- writevt `tty` "`cat /tmp/selector.out`"
- stty ${OLD_SETTINGS}
+// This software is highly Linux-specific, but I would be glad to get
+// patches to make it work on other OS
-*/
+#include <fstream>
+#include <iostream>
#include <stdio.h>
-#include <ncurses.h>
-#include <iostream>
-#include <fstream>
-#include <string.h>
#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+#include <string.h>
+#include <ncurses.h>
#include <fcntl.h>
#include <sys/ioctl.h>
-#include <fcntl.h>
#include <termios.h>
-#include <strings.h>
using namespace std;
+#define VERSION "1.0"
+
+// Yeah, global variables!
+
int buffer_size = 1024;
-int nb_lines_max = 1000;
+int nb_lines_max = 10000;
char pattern_separator = ';';
int output_to_vt_buffer = 0;
+int with_colors = 1;
+
+//////////////////////////////////////////////////////////////////////
+
+// This looks severely Linux-only ...
+
+void inject_into_tty_buffer(char *line) {
+ char *tty = ttyname(STDIN_FILENO);
+ int fd = open(tty, O_WRONLY);
+
+ struct termios oldtio, newtio;
+
+ if (fd >= 0) {
+ // Save current port settings
+ tcgetattr(fd,&oldtio);
+ memset(&newtio, 0, sizeof(newtio));
+ // Set input mode (non-canonical, *no echo*,...)
+ tcflush(fd, TCIFLUSH);
+ tcsetattr(fd,TCSANOW, &newtio);
+ // Put the selected line in the tty input buffer
+ for(char *k = line; *k; k++) {
+ ioctl(fd, TIOCSTI, k);
+ }
+ // Restore the old settings
+ tcsetattr(fd,TCSANOW, &oldtio);
+ close(fd);
+ } else {
+ cerr << "Can not open " << tty << "." << endl;
+ exit(1);
+ }
+}
+
+//////////////////////////////////////////////////////////////////////
int match(char *string, int nb_patterns, char **patterns) {
for(int n = 0; n < nb_patterns; n++) {
return 1;
}
+//////////////////////////////////////////////////////////////////////
+
void check_opt(int argc, char **argv, int n_opt, int n, const char *help) {
if(n_opt + n >= argc) {
cerr << "Missing argument for " << argv[n_opt] << "."
}
}
+//////////////////////////////////////////////////////////////////////
+
int previous_visible(int current_line, int nb_lines, char **lines, int nb_patterns, char **patterns) {
int line = current_line - 1;
while(line >= 0 && !match(lines[line], nb_patterns, patterns)) line--;
int console_width = getmaxx(stdscr);
int console_height = getmaxy(stdscr);
- int nb_printed_lines = 1;
-
// First, we find a visible line. In priority: The current, or the
// first visible after it, or the first visible before it.
addstr("\n");
+ int nb_printed_lines = 1;
+
// Here new_line is either a line number matching the patterns, or -1
if(new_line >= 0) {
k++;
}
+ // We fill the rest of the line with blanks if either we did
+ // not clear() or if this is the highlighted line
+
if(no_blink || l == new_line) {
while(k < console_width) {
buffer[k++] = ' ';
buffer[k++] = '\n';
buffer[k++] = '\0';
+ // Highlight the highlighted line ...
+
if(l == new_line) {
- attron(COLOR_PAIR(2));
- addnstr(buffer, console_width);
- attroff(COLOR_PAIR(2));
+ if(with_colors) {
+ attron(COLOR_PAIR(2));
+ addnstr(buffer, console_width);
+ attroff(COLOR_PAIR(2));
+ } else {
+ attron(A_STANDOUT);
+ addnstr(buffer, console_width);
+ attroff(A_STANDOUT);
+ }
} else {
addnstr(buffer, console_width);
}
}
}
- *temporary_line = new_line;
if(motion != 0) {
*current_line = new_line;
}
}
- // if(nb_printed_lines == 1) {
- // addnstr("[no selection]\n", console_width);
- // nb_printed_lines++;
- // }
+ *temporary_line = new_line;
+
+ if(nb_printed_lines == 1) {
+ addnstr("[no selection]\n", console_width);
+ nb_printed_lines++;
+ }
if(no_blink) { // Erase the rest of the window. That's slightly ugly.
int k = 0;
buffer[console_width] = '\0';
move(0, 0);
- attron(COLOR_PAIR(1));
- addnstr(buffer, console_width);
- attroff(COLOR_PAIR(1));
+ if(with_colors) {
+ attron(COLOR_PAIR(1));
+ addnstr(buffer, console_width);
+ attroff(COLOR_PAIR(1));
+ } else {
+ attron(A_REVERSE);
+ addnstr(buffer, console_width);
+ attroff(A_REVERSE);
+ }
- refresh(); // After doing something on the display, we refresh it
+ // We are done
+
+ refresh();
}
//////////////////////////////////////////////////////////////////////
char buffer[buffer_size];
char *lines[nb_lines_max];
int no_blink = 0;
+ int color_fg_modeline, color_bg_modeline;
+ int color_fg_highlight, color_bg_highlight;
+
+ color_fg_modeline = COLOR_WHITE;
+ color_bg_modeline = COLOR_BLACK;
+ color_fg_highlight = COLOR_BLACK;
+ color_bg_highlight = COLOR_YELLOW;
+
+ setlocale(LC_ALL, "");
char input_filename[buffer_size], output_filename[buffer_size];
- strcpy(input_filename, "/dev/stdin");
+ strcpy(input_filename, "");
strcpy(output_filename, "/tmp/selector.out");
int i = 1;
i++;
}
+ else if(strcmp(argv[i], "-m") == 0) {
+ with_colors = 0;
+ i++;
+ }
+
else if(strcmp(argv[i], "-f") == 0) {
check_opt(argc, argv, i, 1, "<input filename>");
strncpy(input_filename, argv[i+1], buffer_size);
i += 2;
}
+ else if(strcmp(argv[i], "-c") == 0) {
+ check_opt(argc, argv, i, 4, "<fg modeline> <bg modeline> <fg highlight> <bg highlight>");
+ color_fg_modeline = atoi(argv[i+1]);
+ color_bg_modeline = atoi(argv[i+2]);
+ color_fg_highlight = atoi(argv[i+3]);
+ color_bg_highlight = atoi(argv[i+4]);
+ i += 5;
+ }
+
else {
- cerr << argv[0] << " [-h] [-o <output filename>] [-b] [-l <max number of lines>] [-s <pattern separator>] [-v]" << endl;
+ cerr << "Selector version " << VERSION
+ << endl
+ << "Written by Francois Fleuret <francois@fleuret.org>"
+ << endl
+ << argv[0]
+ << " [-h]"
+ << " [-v]"
+ << " [-m]"
+ << " [-c <fg modeline> <bg modeline> <fg highlight> <bg highlight>]"
+ << " [-o <output filename>]"
+ << " [-s <pattern separator>]"
+ << " [-l <max number of lines>]"
+ << " -f <input filename>"
+ << endl;
if(strcmp(argv[i], "-h") == 0) {
exit(0);
} else {
}
}
+ if(!input_filename[0]) {
+ cerr << "You must specify a input file with -f." << endl;
+ exit(1);
+ }
+
ifstream file(input_filename);
if(file.fail()) {
- cerr << "Can not open \"" << input_filename << "\"" << endl;
+ cerr << "Can not open " << input_filename << endl;
return 1;
}
initscr();
- if(!has_colors()) {
- cerr << "No colors." << endl;
- return 1;
+ if(with_colors) {
+ if(has_colors()) {
+ start_color();
+ if(color_fg_modeline < 0 || color_fg_modeline >= COLORS ||
+ color_bg_modeline < 0 || color_bg_modeline >= COLORS ||
+ color_fg_highlight < 0 || color_bg_highlight >= COLORS ||
+ color_bg_highlight < 0 || color_bg_highlight >= COLORS) {
+ echo();
+ curs_set(1);
+ endwin();
+ cerr << "Color numbers have to be between 0 and " << COLORS - 1 << "." << endl;
+ exit(1);
+ }
+ init_pair(1, color_fg_modeline, color_bg_modeline);
+ init_pair(2, color_fg_highlight, color_bg_highlight);
+ } else {
+ with_colors = 0;
+ }
}
noecho();
- curs_set(0);
- keypad(stdscr, TRUE);
-
- start_color();
- // init_pair(1, COLOR_WHITE, COLOR_BLACK);
- init_pair(1, COLOR_WHITE, COLOR_GREEN);
- init_pair(2, COLOR_BLACK, COLOR_YELLOW);
+ curs_set(0); // Hide the cursor
+ keypad(stdscr, TRUE); // So that the arrow keys work
int key;
-
int current_line = 0, temporary_line = 0;
update_screen(¤t_line, &temporary_line, 0, nb_lines, lines, patterns, no_blink);
int motion = 0;
- if(key >= ' ' && key <= 'z') {
+ if(key >= ' ' && key <= '~') {
patterns[patterns_point++] = key;
patterns[patterns_point] = '\0';
}
update_screen(¤t_line, &temporary_line, motion,
nb_lines, lines, patterns, no_blink);
+
} while(key != '\n' && key != KEY_ENTER && key != '\a');
echo();
curs_set(1);
endwin();
- if(output_to_vt_buffer) {
- if((key == KEY_ENTER || key == '\n') && temporary_line >= 0 && temporary_line < nb_lines) {
- char *tty = ttyname (STDIN_FILENO);
- int fd = open(tty, O_WRONLY);
-
- struct termios oldtio, newtio;
-
- if (fd >= 0) {
- // Save current port settings
- tcgetattr(fd,&oldtio);
- bzero(&newtio, sizeof(newtio));
- newtio.c_cflag = 0;
- newtio.c_iflag = 0;
- newtio.c_oflag = 0;
- // Set input mode (non-canonical, *no echo*,...)
- newtio.c_lflag = 0;
- tcflush(fd, TCIFLUSH);
- tcsetattr(fd,TCSANOW, &newtio);
- for(char *k = lines[temporary_line]; *k; k++) {
- ioctl(fd, TIOCSTI, k);
- }
- // Restore the old settings
- tcsetattr(fd,TCSANOW, &oldtio);
- close(fd);
- } else {
- cerr << "Can not open " << tty << endl;
- exit(1);
+ if((key == KEY_ENTER || key == '\n')) {
+ if(output_to_vt_buffer) {
+ if(temporary_line >= 0 && temporary_line < nb_lines) {
+ inject_into_tty_buffer(lines[temporary_line]);
}
- }
- } else {
-
- ofstream out(output_filename);
- if(out.fail()) {
- cerr << "Can not open " << output_filename << " for writing." << endl;
- exit(1);
} else {
- if((key == KEY_ENTER || key == '\n') && temporary_line >= 0 && temporary_line < nb_lines) {
- out << lines[temporary_line] << endl;
+ ofstream out(output_filename);
+ if(out.fail()) {
+ cerr << "Can not open " << output_filename << " for writing." << endl;
+ exit(1);
} else {
- out << endl;
+ if(temporary_line >= 0 && temporary_line < nb_lines) {
+ out << lines[temporary_line] << endl;
+ } else {
+ out << endl;
+ }
}
out.flush();
}
projects / selector.git / blobdiff