fileutl: empty file support: Avoid fstat() on -1 fd and check result

[apt.git] / apt-pkg / install-progress.h

diff --git a/apt-pkg/install-progress.h b/apt-pkg/install-progress.h
index 050954bb5c74dc82158c6daddf56b97e5d8af366..23ddbbec63f66fa19f805a88d5c30077e43c1b67 100644 (file)
--- a/apt-pkg/install-progress.h
+++ b/apt-pkg/install-progress.h
@@ -1,9 +1,12 @@
 #ifndef PKGLIB_IPROGRESS_H
 #define PKGLIB_IPROGRESS_H
 
+#include <apt-pkg/macros.h>
+
 #include <string>
 #include <unistd.h>
-
+#include <signal.h>
+#include <vector>
 
 namespace APT {
 namespace Progress {
@@ -15,7 +18,7 @@ namespace Progress {
  {
  private:
     /** \brief dpointer placeholder */
-    void *d;
+    void * const d;
 
  protected:
     std::string progress_str;
@@ -23,36 +26,42 @@ namespace Progress {
     int last_reported_progress;
 
  public:
-    PackageManager() 
-       : percentage(0.0), last_reported_progress(-1) {};
-    virtual ~PackageManager() {};
+    PackageManager();
+    virtual ~PackageManager();
 
-    virtual void Start() {};
+    /* Global Start/Stop */
+    virtual void Start(int /*child_pty*/=-1) {};
     virtual void Stop() {};
 
+    /* When dpkg is invoked (may happen multiple times for each
+     * install/remove block
+    */
+    virtual void StartDpkg() {};
+
     virtual pid_t fork() {return fork(); };
 
     virtual void Pulse() {};
     virtual long GetPulseInterval() {
-         return 500000;
+         return 50000000;
     };
 
-    virtual bool StatusChanged(std::string PackageName, 
+    virtual bool StatusChanged(std::string PackageName,
                                unsigned int StepsDone,
                                unsigned int TotalSteps,
-                               std::string HumanReadableAction) ;
-    virtual void Error(std::string PackageName,                                
-                       unsigned int StepsDone,
-                       unsigned int TotalSteps,
-                       std::string ErrorMessage) {};
-    virtual void ConffilePrompt(std::string PackageName,
-                                unsigned int StepsDone,
-                                unsigned int TotalSteps,
-                                std::string ConfMessage) {};
+                               std::string HumanReadableAction);
+    virtual void Error(std::string /*PackageName*/,
+                       unsigned int /*StepsDone*/,
+                       unsigned int /*TotalSteps*/,
+                       std::string /*ErrorMessage*/) {}
+    virtual void ConffilePrompt(std::string /*PackageName*/,
+                                unsigned int /*StepsDone*/,
+                                unsigned int /*TotalSteps*/,
+                                std::string /*ConfMessage*/) {}
  };
 
  class PackageManagerProgressFd : public PackageManager
  {
+    void * const d;
  protected:
     int OutStatusFd;
     int StepsDone;
@@ -60,28 +69,30 @@ namespace Progress {
     void WriteToStatusFd(std::string msg);
 
  public:
-    PackageManagerProgressFd(int progress_fd);
+    explicit PackageManagerProgressFd(int progress_fd);
+    virtual ~PackageManagerProgressFd();
 
-    virtual void Start();
-    virtual void Stop();
+    virtual void StartDpkg() APT_OVERRIDE;
+    virtual void Stop() APT_OVERRIDE;
 
-    virtual bool StatusChanged(std::string PackageName, 
+    virtual bool StatusChanged(std::string PackageName,
                                unsigned int StepsDone,
                                unsigned int TotalSteps,
-                               std::string HumanReadableAction);
-    virtual void Error(std::string PackageName,                                
+                               std::string HumanReadableAction) APT_OVERRIDE;
+    virtual void Error(std::string PackageName,
                        unsigned int StepsDone,
                        unsigned int TotalSteps,
-                          std::string ErrorMessage);
+                          std::string ErrorMessage) APT_OVERRIDE;
     virtual void ConffilePrompt(std::string PackageName,
                                 unsigned int StepsDone,
                                 unsigned int TotalSteps,
-                                   std::string ConfMessage);
+                                   std::string ConfMessage) APT_OVERRIDE;
 
  };
 
  class PackageManagerProgressDeb822Fd : public PackageManager
  {
+    void * const d;
  protected:
     int OutStatusFd;
     int StepsDone;
@@ -89,52 +100,77 @@ namespace Progress {
     void WriteToStatusFd(std::string msg);
 
  public:
-    PackageManagerProgressDeb822Fd(int progress_fd);
+    explicit PackageManagerProgressDeb822Fd(int progress_fd);
+    virtual ~PackageManagerProgressDeb822Fd();
 
-    virtual void Start();
-    virtual void Stop();
+    virtual void StartDpkg() APT_OVERRIDE;
+    virtual void Stop() APT_OVERRIDE;
 
-    virtual bool StatusChanged(std::string PackageName, 
+    virtual bool StatusChanged(std::string PackageName,
                                unsigned int StepsDone,
                                unsigned int TotalSteps,
-                               std::string HumanReadableAction);
-    virtual void Error(std::string PackageName,                                
+                               std::string HumanReadableAction) APT_OVERRIDE;
+    virtual void Error(std::string PackageName,
                        unsigned int StepsDone,
                        unsigned int TotalSteps,
-                          std::string ErrorMessage);
+                          std::string ErrorMessage) APT_OVERRIDE;
     virtual void ConffilePrompt(std::string PackageName,
                                 unsigned int StepsDone,
                                 unsigned int TotalSteps,
-                                   std::string ConfMessage);
+                                   std::string ConfMessage) APT_OVERRIDE;
  };
 
  class PackageManagerFancy : public PackageManager
  {
+    void * const d;
+ private:
+    APT_HIDDEN static void staticSIGWINCH(int);
+    static std::vector<PackageManagerFancy*> instances;
+    APT_HIDDEN bool DrawStatusLine();
+
  protected:
-    int nr_terminal_rows;
     void SetupTerminalScrollArea(int nr_rows);
+    void HandleSIGWINCH(int);
+
+    typedef struct {
+       int rows;
+       int columns;
+    } TermSize;
+    TermSize GetTerminalSize();
+
+    sighandler_t old_SIGWINCH;
+    int child_pty;
 
  public:
     PackageManagerFancy();
-    virtual void Start();
-    virtual void Stop();
-    virtual bool StatusChanged(std::string PackageName, 
+    virtual ~PackageManagerFancy();
+    virtual void Start(int child_pty=-1) APT_OVERRIDE;
+    virtual void Stop() APT_OVERRIDE;
+    virtual bool StatusChanged(std::string PackageName,
                                unsigned int StepsDone,
                                unsigned int TotalSteps,
-                               std::string HumanReadableAction);
+                               std::string HumanReadableAction) APT_OVERRIDE;
+
+    // return a progress bar of the given size for the given progress 
+    // percent between 0.0 and 1.0 in the form "[####...]"
+    static std::string GetTextProgressStr(float percent, int OutputSize);
  };
 
  class PackageManagerText : public PackageManager
  {
+    void * const d;
  public:
-    virtual bool StatusChanged(std::string PackageName, 
+    virtual bool StatusChanged(std::string PackageName,
                                unsigned int StepsDone,
                                unsigned int TotalSteps,
-                               std::string HumanReadableAction);
+                               std::string HumanReadableAction) APT_OVERRIDE;
+
+    PackageManagerText();
+    virtual ~PackageManagerText();
  };
 
 
-}; // namespace Progress
-}; // namespace APT
+} // namespace Progress
+} // namespace APT
 
 #endif