Cosmetics.

[selector.git] / selector.cc

diff --git a/selector.cc b/selector.cc
index ccc6158..e1ecf98 100644 (file)
--- a/selector.cc
+++ b/selector.cc
@@ -1,7 +1,7 @@
 
 /*
- *  selector is a simple shell command for selection of strings with a
- *  dynamic pattern-matching.
+ *  selector is a simple command line utility for selection of strings
+ *  with a dynamic pattern-matching.
  *
  *  Copyright (c) 2009 Francois Fleuret
  *  Written by Francois Fleuret <francois@fleuret.org>
@@ -56,6 +56,9 @@ int use_regexp = 0;
 int case_sensitive = 0;
 char *title = 0;
 
+#define COLOR_MODELINE 1
+#define COLOR_HIGHLIGHTED_LINE 2
+
 //////////////////////////////////////////////////////////////////////
 
 void inject_into_tty_buffer(char *string) {
@@ -84,6 +87,26 @@ void check_opt(int argc, char **argv, int n_opt, int n, const char *help) {
   }
 }
 
+int string_to_positive_integer(char *string) {
+  int error = 0;
+  int result = 0;
+
+  if(*string) {
+    for(char *s = string; *s; s++) {
+      if(*s >= '0' && *s <= '9') {
+        result = result * 10 + int(*s - '0');
+      } else error = 1;
+    }
+  } else error = 1;
+
+  if(error) {
+    cerr << "Value `" << string << "' is not a positive integer." << endl;
+    exit(1);
+  }
+
+  return result;
+}
+
 //////////////////////////////////////////////////////////////////////
 // A quick and dirty hash table
 
@@ -409,9 +432,9 @@ void update_screen(int *current_line, int *temporary_line, int motion,
 
           if(l == new_line) {
             if(with_colors) {
-              attron(COLOR_PAIR(2));
+              attron(COLOR_PAIR(COLOR_HIGHLIGHTED_LINE));
               addnstr(buffer, console_width);
-              attroff(COLOR_PAIR(2));
+              attroff(COLOR_PAIR(COLOR_HIGHLIGHTED_LINE));
             } else {
               attron(A_STANDOUT);
               addnstr(buffer, console_width);
@@ -444,7 +467,7 @@ void update_screen(int *current_line, int *temporary_line, int motion,
   move(0, 0);
 
   if(with_colors) {
-    attron(COLOR_PAIR(1));
+    attron(COLOR_PAIR(COLOR_MODELINE));
   } else {
     attron(A_REVERSE);
   }
@@ -479,14 +502,25 @@ void update_screen(int *current_line, int *temporary_line, int motion,
     addstr(" ");
   }
 
-  if(use_regexp) {
-    addstr(" [regexp]");
+  if(use_regexp || case_sensitive) {
+    addstr("[");
+    if(use_regexp) {
+      addstr("regexp");
+    }
+
+    if(case_sensitive) {
+      if(use_regexp) {
+        addstr(",");
+      }
+      addstr("case");
+    }
+    addstr("]");
   }
 
   move(0, cursor_x);
 
   if(with_colors) {
-    attroff(COLOR_PAIR(1));
+    attroff(COLOR_PAIR(COLOR_MODELINE));
   } else {
     attroff(A_REVERSE);
   }
@@ -667,16 +701,16 @@ int main(int argc, char **argv) {
 
     else if(strcmp(argv[i], "-l") == 0) {
       check_opt(argc, argv, i, 1, "<maximum number of lines>");
-      nb_lines_max = atoi(argv[i+1]);
+      nb_lines_max = string_to_positive_integer(argv[i+1]);
       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]);
+      color_fg_modeline = string_to_positive_integer(argv[i + 1]);
+      color_bg_modeline = string_to_positive_integer(argv[i + 2]);
+      color_fg_highlight = string_to_positive_integer(argv[i + 3]);
+      color_bg_highlight = string_to_positive_integer(argv[i + 4]);
       i += 5;
     }
 
@@ -809,9 +843,8 @@ int main(int argc, char **argv) {
         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);
-      init_pair(3, color_bg_modeline, color_fg_modeline);
+      init_pair(COLOR_MODELINE , color_fg_modeline, color_bg_modeline);
+      init_pair(COLOR_HIGHLIGHTED_LINE, color_fg_highlight, color_bg_highlight);
     } else {
       with_colors = 0;
     }
@@ -891,6 +924,10 @@ int main(int argc, char **argv) {
       use_regexp = !use_regexp;
     }
 
+    else if(key == '\011') { // ^I
+      case_sensitive = !case_sensitive;
+    }
+
     else if(key == '\025') { // ^U
       kill_before_cursor(pattern, &cursor_position);
     }
@@ -933,7 +970,8 @@ int main(int argc, char **argv) {
       }
       out.flush();
     }
-
+  } else {
+    cout << "Aborted." << endl;
   }
 
   for(int l = 0; l < nb_lines; l++) {