X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;ds=inline;f=selector.cc;h=887b4d04c23b4005ce77927a082d35ae75f296b2;hb=b34072e0fd639bd0214c3186ca143c04962f51a7;hp=50620b69f7a75e9b46f9830801028ccd4edca310;hpb=49a8d9563a444aeaa5e732ef658e8ddd900d4294;p=selector.git
diff --git a/selector.cc b/selector.cc
index 50620b6..887b4d0 100644
--- a/selector.cc
+++ b/selector.cc
@@ -1,58 +1,83 @@
-
-///////////////////////////////////////////////////////////////////////////
-// START_IP_HEADER //
-// //
-// This program is free software: you can redistribute it and/or modify //
-// it under the terms of the version 3 of the GNU General Public License //
-// as published by the Free Software Foundation. //
-// //
-// This program is distributed in the hope that it will be useful, but //
-// WITHOUT ANY WARRANTY; without even the implied warranty of //
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
-// General Public License for more details. //
-// //
-// You should have received a copy of the GNU General Public License //
-// along with this program. If not, see . //
-// //
-// Written by and Copyright (C) Francois Fleuret //
-// Contact for comments & bug reports //
-// //
-// END_IP_HEADER //
-///////////////////////////////////////////////////////////////////////////
+/*
+ * selector is a simple shell command for selection of strings with a
+ * dynamic pattern-matching.
+ *
+ * Copyright (c) 2008 Francois Fleuret
+ * Written by Francois Fleuret
+ *
+ * This file is part of selector.
+ *
+ * selector is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * selector is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with selector. If not, see .
+ *
+ */
+
+/*
+
+ 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.
+
+ ./selector -f ~/.bash_history
+ OLD_SETTINGS=`stty -g`
+ stty -echo raw
+ writevt `tty` "`cat /tmp/selector.out`"
+ stty ${OLD_SETTINGS}
+
+*/
#include
#include
#include
#include
#include
+#include
+#include
+#include
+#include
using namespace std;
int buffer_size = 1024;
-int nb_lines_max = 100000;
+int nb_lines_max = 1000;
+char pattern_separator = ';';
+int output_to_vt_buffer = 0;
-int match(char *string, char *regexp) {
- return strstr(string, regexp) != 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(int condition, const char *message) {
- if(!condition) {
- echo();
- curs_set(1);
- endwin();
- cout << message << endl;
+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;
+ exit(1);
}
}
-int previous_visible(int current_line, int nb_lines, char **lines, char *regexp) {
+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], regexp)) line--;
+ while(line >= 0 && !match(lines[line], nb_patterns, patterns)) line--;
return line;
}
-int next_visible(int current_line, int nb_lines, char **lines, char *regexp) {
+int next_visible(int current_line, int nb_lines, char **lines, int nb_patterns, char **patterns) {
int line = current_line + 1;
- while(line < nb_lines && !match(lines[line], regexp)) line++;
+ while(line < nb_lines && !match(lines[line], nb_patterns, patterns)) line++;
if(line < nb_lines)
return line;
@@ -60,27 +85,55 @@ int next_visible(int current_line, int nb_lines, char **lines, char *regexp) {
return -1;
}
-void update_screen(int *current_line, int motion,
+void update_screen(int *current_line, int *temporary_line, int motion,
int nb_lines, char **lines,
- char *regexp, int noblink) {
+ char *pattern_list,
+ int noblink) {
char buffer[buffer_size];
+ // We split the pattern list into individual patterns
+
+ int nb_patterns = 1;
+
+ for(char *s = pattern_list; *s; s++) {
+ if(*s == pattern_separator) {
+ nb_patterns++;
+ }
+ }
+
+ char splitted_patterns[strlen(pattern_list) + 1];
+ char *patterns[nb_patterns];
+
+ strcpy(splitted_patterns, pattern_list);
+
+ int n = 0;
+ char *last_pattern_start = splitted_patterns;
+ for(char *s = splitted_patterns; n < nb_patterns; s++) {
+ if(*s == pattern_separator || *s == '\0') {
+ *s = '\0';
+ patterns[n++] = last_pattern_start;
+ last_pattern_start = s + 1;
+ }
+ }
+
+ // We now take care of printing the lines per se
+
int console_width = getmaxx(stdscr);
int console_height = getmaxy(stdscr);
- int nb_printed_lines = 1, last_printer_line = -1;
+ 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.
int new_line;
- if(match(lines[*current_line], regexp)) {
+ if(match(lines[*current_line], nb_patterns, patterns)) {
new_line = *current_line;
} else {
- new_line = next_visible(*current_line, nb_lines, lines, regexp);
+ new_line = next_visible(*current_line, nb_lines, lines, nb_patterns, patterns);
if(new_line < 0) {
- new_line = previous_visible(*current_line, nb_lines, lines, regexp);
+ new_line = previous_visible(*current_line, nb_lines, lines, nb_patterns, patterns);
}
}
@@ -92,13 +145,13 @@ void update_screen(int *current_line, int 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, regexp);
+ l = next_visible(new_line, 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, regexp);
+ l = previous_visible(new_line, nb_lines, lines, nb_patterns, patterns);
if(l >= 0) {
new_line = l;
}
@@ -113,51 +166,52 @@ void update_screen(int *current_line, int motion,
addstr("\n");
- check(new_line < nb_lines, "Ouch!");
-
- // Here new_line is either a line number matching the regexp, or -1
+ // Here new_line is either a line number matching the patterns, or -1
if(new_line >= 0) {
int first_line = new_line, last_line = new_line, nb_match = 1;
+ // We find the first and last line to show, so that the total of
+ // visible lines between them (them include) is console_height - 1
+
while(nb_match < console_height-1 && (first_line > 0 || last_line < nb_lines - 1)) {
if(first_line > 0) {
first_line--;
- while(first_line > 0 && !match(lines[first_line], regexp)) {
+ while(first_line > 0 && !match(lines[first_line], nb_patterns, patterns)) {
first_line--;
}
- if(match(lines[first_line], regexp)) {
+ if(match(lines[first_line], nb_patterns, patterns)) {
nb_match++;
}
}
if(last_line < nb_lines - 1) {
last_line++;
- while(last_line < nb_lines - 1 && !match(lines[last_line], regexp)) {
+ while(last_line < nb_lines - 1 && !match(lines[last_line], nb_patterns, patterns)) {
last_line++;
}
- if(match(lines[last_line], regexp)) {
+ if(match(lines[last_line], nb_patterns, patterns)) {
nb_match++;
}
}
}
- check(first_line >= 0 && last_line < nb_lines, "ouch2");
+ // Now we display them
for(int l = first_line; l <= last_line; l++) {
- if(match(lines[l], regexp)) {
+ if(match(lines[l], nb_patterns, patterns)) {
int k = 0;
- while(lines[l][k] && k < buffer_size - 2 && k < console_width - 1) {
+ while(lines[l][k] && k < buffer_size - 2 && k < console_width - 2) {
buffer[k] = lines[l][k];
k++;
}
- if(noblink) {
- while(k < console_width - 1) {
+ if(noblink || l == new_line) {
+ while(k < console_width) {
buffer[k++] = ' ';
}
}
@@ -167,19 +221,17 @@ void update_screen(int *current_line, int motion,
if(l == new_line) {
attron(COLOR_PAIR(2));
- addstr(buffer);
+ addnstr(buffer, console_width);
attroff(COLOR_PAIR(2));
} else {
- addstr(buffer);
+ addnstr(buffer, console_width);
}
- last_printer_line = l;
nb_printed_lines++;
}
}
- check(nb_printed_lines != nb_match, "ouch3");
-
+ *temporary_line = new_line;
if(motion != 0) {
*current_line = new_line;
}
@@ -187,47 +239,95 @@ void update_screen(int *current_line, int motion,
if(noblink) { // Erase the rest of the window. That's slightly ugly.
int k = 0;
- while(k < console_width - 1) {
+ while(k < console_width) {
buffer[k++] = ' ';
}
buffer[k++] = '\n';
buffer[k++] = '\0';
for(int l = nb_printed_lines; l < console_height; l++) {
- addstr(buffer);
+ addnstr(buffer, console_width);
}
}
// Draw the modeline
+ sprintf(buffer, "%d/%d pattern: %s",
+ nb_printed_lines - 1,
+ nb_lines,
+ pattern_list);
+
+ for(int k = strlen(buffer); k < console_width; k++) buffer[k] = ' ';
+ buffer[console_width] = '\0';
+
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 < console_width - 1; k++) buffer[k] = ' ';
- buffer[console_width-1] = '\0';
- addstr(buffer);
+ addnstr(buffer, console_width);
attroff(COLOR_PAIR(1));
refresh(); // After doing something on the display, we refresh it
}
+//////////////////////////////////////////////////////////////////////
+
int main(int argc, char **argv) {
char buffer[buffer_size];
char *lines[nb_lines_max];
- int noblink = 1;
+ int noblink = 0;
+
+ char input_filename[buffer_size], output_filename[buffer_size];
+ strcpy(input_filename, "/dev/stdin");
+ strcpy(output_filename, "/tmp/selector.out");
+
+ int i = 1;
+ while(i < argc) {
+ if(strcmp(argv[i], "-o") == 0) {
+ check_opt(argc, argv, i, 1, "