support scrolling for text files

src/Makefile.am

@@ -39,8 +39,7 @@ LDADD = \
 	$(HELP_O) \
 	$(SQLITE3_LIBS) \
 	$(PCRE_LIBS) \
-	-lpcrecpp \
-	-lgpm
+	-lpcrecpp
 
 noinst_HEADERS = \
 	auto_fd.hh \

src/Makefile.in

@@ -226,8 +226,7 @@ LDADD = \
 	$(HELP_O) \
 	$(SQLITE3_LIBS) \
 	$(PCRE_LIBS) \
-	-lpcrecpp \
-	-lgpm
+	-lpcrecpp
 
 noinst_HEADERS = \
 	auto_fd.hh \

src/line_buffer.cc

@@ -20,8 +20,6 @@ static const size_t DEFAULT_LINE_BUFFER_SIZE = 256 * 1024;
 static const size_t MAX_LINE_BUFFER_SIZE     = 2 * DEFAULT_LINE_BUFFER_SIZE;
 static const size_t DEFAULT_INCREMENT        = 1024;
 
-static set<line_buffer *> ALL_BUFFERS;
-
 /*
  * XXX REMOVE ME
  *
@@ -86,8 +84,6 @@ line_buffer::line_buffer()
 	throw bad_alloc();
     }
 
-    ALL_BUFFERS.insert(this);
-
     assert(this->invariant());
 }
 
@@ -96,8 +92,6 @@ line_buffer::~line_buffer()
     auto_fd fd = -1;
 
     this->set_fd(fd);
-    
-    ALL_BUFFERS.erase(this);
 }
 
 void line_buffer::set_fd(auto_fd &fd)

src/lnav.cc

@@ -380,6 +380,7 @@ static void rebuild_indexes(bool force)
 
     logfile_sub_source &lss   = lnav_data.ld_log_source;
     textview_curses &log_view = lnav_data.ld_views[LNV_LOG];
+    textview_curses &text_view = lnav_data.ld_views[LNV_TEXT];
     vis_line_t old_bottom(0), height(0);
 
     unsigned long width;
@@ -390,6 +391,11 @@ static void rebuild_indexes(bool force)
     {
 	textfile_sub_source *tss = &lnav_data.ld_text_source;
 	std::list<logfile *>::iterator iter;
+	size_t new_count;
+
+	text_view.get_dimensions(height, width);
+	old_bottom = text_view.get_top() + height;
+	scroll_down = (size_t)old_bottom > tss->text_line_count();
 
 	for (iter = tss->tss_files.begin();
 	     iter != tss->tss_files.end();) {
@@ -405,6 +411,13 @@ static void rebuild_indexes(bool force)
 		++iter;
 	    }
 	}
+
+	text_view.reload_data();
+
+	new_count = tss->text_line_count();
+	if (scroll_down && new_count >= (size_t)height) {
+	  text_view.set_top(vis_line_t(new_count - height + 1));
+	}
     }
 
     old_time = lnav_data.ld_top_time;