1 files changed, 111 insertions, 0 deletions
diff --git a/apt-pkg/iprogress.cc b/apt-pkg/iprogress.cc
new file mode 100644
index 000000000..4de8c0492
--- /dev/null
+++ b/apt-pkg/iprogress.cc
@@ -0,0 +1,111 @@
+#include <apt-pkg/iprogress.h>
+#include <apt-pkg/strutl.h>
+
+#include <termios.h>
+#include <sys/ioctl.h>
+
+namespace APT {
+namespace Progress {
+
+static void SetupTerminalScrollArea(int nr_rows)
+{
+     // scroll down a bit to avoid visual glitch when the screen
+     // area shrinks by one row
+     std::cout << "\n";
+         
+     // save cursor
+     std::cout << "\033[s";
+         
+     // set scroll region (this will place the cursor in the top left)
+     std::cout << "\033[1;" << nr_rows - 1 << "r";
+            
+     // restore cursor but ensure its inside the scrolling area
+     std::cout << "\033[u";
+     static const char *move_cursor_up = "\033[1A";
+     std::cout << move_cursor_up;
+     std::flush(std::cout);
+}
+
+PackageManagerFancy::PackageManagerFancy()
+   : nr_terminal_rows(-1)
+{
+   struct winsize win;
+   if(ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&win) == 0)
+   {
+      nr_terminal_rows = win.ws_row;
+   }
+}
+
+void PackageManagerFancy::Started()
+{
+   SetupTerminalScrollArea(nr_terminal_rows);
+}
+
+void PackageManagerFancy::Finished()
+{
+   SetupTerminalScrollArea(nr_terminal_rows + 1);
+
+   // override the progress line (sledgehammer)
+   static const char* clear_screen_below_cursor = "\033[J";
+   std::cout << clear_screen_below_cursor;
+}
+
+void PackageManagerFancy::StatusChanged(std::string PackageName, 
+                                        unsigned int StepsDone,
+                                        unsigned int TotalSteps)
+{
+   int reporting_steps = _config->FindI("DpkgPM::Reporting-Steps", 1);
+   float percentage = StepsDone/(float)TotalSteps * 100.0;
+
+   if(percentage < (last_reported_progress + reporting_steps))
+      return;
+
+   std::string progress_str;
+   strprintf(progress_str, "Progress: [%3i%%]", (int)percentage);
+
+   int row = nr_terminal_rows;
+
+   static string save_cursor = "\033[s";
+   static string restore_cursor = "\033[u";
+   
+   static string set_bg_color = "\033[42m"; // green
+   static string set_fg_color = "\033[30m"; // black
+   
+   static string restore_bg =  "\033[49m";
+   static string restore_fg = "\033[39m";
+   
+   std::cout << save_cursor
+      // move cursor position to last row
+             << "\033[" << row << ";0f" 
+             << set_bg_color
+             << set_fg_color
+             << progress_str
+             << restore_cursor
+             << restore_bg
+             << restore_fg;
+   std::flush(std::cout);
+   last_reported_progress = percentage;
+}
+
+void PackageManagerText::StatusChanged(std::string PackageName, 
+                                       unsigned int StepsDone,
+                                       unsigned int TotalSteps)
+{
+   int reporting_steps = _config->FindI("DpkgPM::Reporting-Steps", 1);
+   float percentage = StepsDone/(float)TotalSteps * 100.0;
+
+   if(percentage < (last_reported_progress + reporting_steps))
+      return;
+
+   std::string progress_str;
+   strprintf(progress_str, "Progress: [%3i%%]", (int)percentage);
+
+   std::cout << progress_str << "\r\n";
+   std::flush(std::cout);
+                   
+   last_reported_progress = percentage;
+}
+
+
+}; // namespace progress
+}; // namespace apt