+
/*
* selector is a simple shell command for selection of strings with a
* dynamic pattern-matching.
*
- * Copyright (c) 2008 Francois Fleuret
- * Written by Francois Fleuret <francois.fleuret@idiap.ch>
+ * Copyright (c) 2009 Francois Fleuret
+ * 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 scurity concern.
+// Here is how 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 <termios.h>
using namespace std;
+// Yeah, global variables!
+
int buffer_size = 1024;
int nb_lines_max = 1000;
char pattern_separator = ';';
int output_to_vt_buffer = 0;
+//////////////////////////////////////////////////////////////////////
+
int match(char *string, int nb_patterns, char **patterns) {
for(int n = 0; n < nb_patterns; n++) {
if(strstr(string, patterns[n]) == 0) return 0;
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]
- << ". Expecting "
- << help
- << "." << endl;
+ cerr << "Missing argument for " << argv[n_opt] << "."
+ << " "
+ << "Expecting " << help << "."
+ << endl;
exit(1);
}
}
+//////////////////////////////////////////////////////////////////////
+
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--;
void update_screen(int *current_line, int *temporary_line, int motion,
int nb_lines, char **lines,
char *pattern_list,
- int noblink) {
+ int no_blink) {
char buffer[buffer_size];
if(new_line >= 0 && motion != 0) {
int l = new_line;
- l += motion;
-
if(motion > 0) {
// We want to go down, let's find the first visible line below
- l = next_visible(new_line, nb_lines, lines, nb_patterns, patterns);
- if(l >= 0) {
- new_line = l;
+ for(int m = 0; l >= 0 && m < motion; m++) {
+ l = next_visible(l, nb_lines, lines, nb_patterns, patterns);
+ if(l >= 0) {
+ new_line = l;
+ }
}
} else {
// We want to go up, let's find the first visible line above
- l = previous_visible(new_line, nb_lines, lines, nb_patterns, patterns);
- if(l >= 0) {
- new_line = l;
+ for(int m = 0; l >= 0 && m < -motion; m++) {
+ l = previous_visible(l, nb_lines, lines, nb_patterns, patterns);
+ if(l >= 0) {
+ new_line = l;
+ }
}
}
}
- if(!noblink) {
+ if(!no_blink) {
clear();
}
k++;
}
- if(noblink || l == new_line) {
+ // 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);
}
}
- if(noblink) { // Erase the rest of the window. That's slightly ugly.
+ 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;
while(k < console_width) {
buffer[k++] = ' ';
addnstr(buffer, console_width);
attroff(COLOR_PAIR(1));
- refresh(); // After doing something on the display, we refresh it
+ // We are done
+
+ refresh();
}
//////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
char buffer[buffer_size];
char *lines[nb_lines_max];
- int noblink = 0;
+ int no_blink = 0;
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;
}
else if(strcmp(argv[i], "-b") == 0) {
- noblink = 1;
+ no_blink = 1;
i++;
}
}
else {
- cerr << argv[0] << " [-h] [-o <output filename>] [-b] [-l <max number of lines>] [-s <pattern separator>] [-v]" << endl;
+ cerr << argv[0]
+ << " [-h]"
+ << " [-b]"
+ << " [-v]"
+ << " [-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()) {
int current_line = 0, temporary_line = 0;
- update_screen(¤t_line, &temporary_line, 0, nb_lines, lines, patterns, noblink);
+ update_screen(¤t_line, &temporary_line, 0, nb_lines, lines, patterns, no_blink);
do {
}
}
+ else if(key == KEY_HOME) {
+ current_line = 0;
+ }
+
+ else if(key == KEY_END) {
+ current_line = nb_lines - 1;
+ }
+
+ else if(key == KEY_NPAGE) {
+ motion = 10;
+ }
+
+ else if(key == KEY_PPAGE) {
+ motion = -10;
+ }
+
else if(key == KEY_UP || key == '\10') {
motion = -1;
}
}
update_screen(¤t_line, &temporary_line, motion,
- nb_lines, lines, patterns, noblink);
+ 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) {
+ if((key == KEY_ENTER || key == '\n') && temporary_line >= 0 && temporary_line < nb_lines) {
+ if(output_to_vt_buffer) {
char *tty = ttyname (STDIN_FILENO);
int fd = open(tty, O_WRONLY);
- write(fd, lines[temporary_line], strlen(lines[temporary_line]));
- close(fd);
- }
- } else {
- ofstream out(output_filename);
- if(out.fail()) {
- cerr << "Can not open " << output_filename << " for writing." << endl;
- exit(1);
+ struct termios oldtio, newtio;
+
+ if (fd >= 0) {
+ // Save current port settings
+ tcgetattr(fd,&oldtio);
+ bzero(&newtio, 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 = 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);
+ }
} 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;
+ out << lines[temporary_line] << endl;
}
out.flush();
}