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-rw-r--r--apt-pkg/install-progress.cc73
1 files changed, 58 insertions, 15 deletions
diff --git a/apt-pkg/install-progress.cc b/apt-pkg/install-progress.cc
index 09b1bef9e..fe065da4f 100644
--- a/apt-pkg/install-progress.cc
+++ b/apt-pkg/install-progress.cc
@@ -9,6 +9,8 @@
#include <sys/ioctl.h>
#include <sstream>
#include <fcntl.h>
+#include <algorithm>
+#include <stdio.h>
namespace APT {
namespace Progress {
@@ -222,8 +224,46 @@ bool PackageManagerProgressDeb822Fd::StatusChanged(std::string PackageName,
}
+PackageManagerFancy::PackageManagerFancy()
+ : child_pty(-1)
+{
+ // setup terminal size
+ old_SIGWINCH = signal(SIGWINCH, PackageManagerFancy::staticSIGWINCH);
+ instances.push_back(this);
+}
+std::vector<PackageManagerFancy*> PackageManagerFancy::instances;
+
+PackageManagerFancy::~PackageManagerFancy()
+{
+ instances.erase(find(instances.begin(), instances.end(), this));
+ signal(SIGWINCH, old_SIGWINCH);
+}
+
+void PackageManagerFancy::staticSIGWINCH(int signum)
+{
+ std::vector<PackageManagerFancy *>::const_iterator I;
+ for(I = instances.begin(); I != instances.end(); I++)
+ (*I)->HandleSIGWINCH(signum);
+}
+
+int PackageManagerFancy::GetNumberTerminalRows()
+{
+ struct winsize win;
+ // FIXME: get from "child_pty" instead?
+ if(ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&win) != 0)
+ return -1;
+
+ if(_config->FindB("Debug::InstallProgress::Fancy", false) == true)
+ std::cerr << "GetNumberTerminalRows: " << win.ws_row << std::endl;
+
+ return win.ws_row;
+}
+
void PackageManagerFancy::SetupTerminalScrollArea(int nr_rows)
{
+ if(_config->FindB("Debug::InstallProgress::Fancy", false) == true)
+ std::cerr << "SetupTerminalScrollArea: " << nr_rows << std::endl;
+
// scroll down a bit to avoid visual glitch when the screen
// area shrinks by one row
std::cout << "\n";
@@ -232,39 +272,41 @@ void PackageManagerFancy::SetupTerminalScrollArea(int nr_rows)
std::cout << "\033[s";
// set scroll region (this will place the cursor in the top left)
- std::cout << "\033[1;" << nr_rows - 1 << "r";
+ std::cout << "\033[0;" << 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;
- // setup env for (hopefully!) ncurses
- string s;
- strprintf(s, "%i", nr_rows);
- setenv("LINES", s.c_str(), 1);
-
+ // ensure its flushed
std::flush(std::cout);
+
+ // setup tty size to ensure xterm/linux console are working properly too
+ // see bug #731738
+ struct winsize win;
+ ioctl(child_pty, TIOCGWINSZ, (char *)&win);
+ win.ws_row = nr_rows - 1;
+ ioctl(child_pty, TIOCSWINSZ, (char *)&win);
}
-PackageManagerFancy::PackageManagerFancy()
- : nr_terminal_rows(-1)
+void PackageManagerFancy::HandleSIGWINCH(int)
{
- struct winsize win;
- if(ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&win) == 0)
- {
- nr_terminal_rows = win.ws_row;
- }
+ int nr_terminal_rows = GetNumberTerminalRows();
+ SetupTerminalScrollArea(nr_terminal_rows);
}
-void PackageManagerFancy::Start()
+void PackageManagerFancy::Start(int a_child_pty)
{
+ child_pty = a_child_pty;
+ int nr_terminal_rows = GetNumberTerminalRows();
if (nr_terminal_rows > 0)
SetupTerminalScrollArea(nr_terminal_rows);
}
void PackageManagerFancy::Stop()
{
+ int nr_terminal_rows = GetNumberTerminalRows();
if (nr_terminal_rows > 0)
{
SetupTerminalScrollArea(nr_terminal_rows + 1);
@@ -273,6 +315,7 @@ void PackageManagerFancy::Stop()
static const char* clear_screen_below_cursor = "\033[J";
std::cout << clear_screen_below_cursor;
}
+ child_pty = -1;
}
bool PackageManagerFancy::StatusChanged(std::string PackageName,
@@ -284,7 +327,7 @@ bool PackageManagerFancy::StatusChanged(std::string PackageName,
HumanReadableAction))
return false;
- int row = nr_terminal_rows;
+ int row = GetNumberTerminalRows();
static string save_cursor = "\033[s";
static string restore_cursor = "\033[u";