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authorArch Librarian <arch@canonical.com>2004-09-20 16:50:53 +0000
committerArch Librarian <arch@canonical.com>2004-09-20 16:50:53 +0000
commit404ec98e5186c844003dee15e15bc96460cc27a5 (patch)
treeebff8ce1af4234d13f8af5aa021db7cbfe56dc4b /apt-pkg/contrib
parent6fc33863f31051a5fc2726a236ce8b64d33bc964 (diff)
Generic progress meter
Author: jgg Date: 1998-07-21 05:33:18 GMT Generic progress meter
Diffstat (limited to 'apt-pkg/contrib')
-rw-r--r--apt-pkg/contrib/progress.cc151
-rw-r--r--apt-pkg/contrib/progress.h84
2 files changed, 235 insertions, 0 deletions
diff --git a/apt-pkg/contrib/progress.cc b/apt-pkg/contrib/progress.cc
new file mode 100644
index 000000000..18dffc83e
--- /dev/null
+++ b/apt-pkg/contrib/progress.cc
@@ -0,0 +1,151 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: progress.cc,v 1.1 1998/07/21 05:33:21 jgg Exp $
+/* ######################################################################
+
+ OpProgress - Operation Progress
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#ifdef __GNUG__
+#pragma implementation "apt-pkg/progress.h"
+#endif
+#include <apt-pkg/progress.h>
+#include <stdio.h>
+ /*}}}*/
+
+// OpProgress::OpProgress - Constructor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+OpProgress::OpProgress() : Current(0), Total(0), Size(0), SubTotal(1),
+ LastPercent(0), Percent(0)
+{
+ memset(&LastTime,0,sizeof(LastTime));
+}
+ /*}}}*/
+// OpProgress::Progress - Sub progress with no state change /*{{{*/
+// ---------------------------------------------------------------------
+/* This assumes that Size is the same as the current sub size */
+void OpProgress::Progress(unsigned long Cur)
+{
+ Percent = (Current + Cur/((float)SubTotal)*Size)*100.0/Total;
+ Update();
+}
+ /*}}}*/
+// OpProgress::OverallProgress - Set the overall progress /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void OpProgress::OverallProgress(unsigned long Current, unsigned long Total,
+ unsigned long Size,string Op)
+{
+ this->Current = Current;
+ this->Total = Total;
+ this->Size = Size;
+ this->Op = Op;
+ SubOp = string();
+ Percent = Current*100.0/Total;
+ Update();
+}
+ /*}}}*/
+// OpProgress::SubProgress - Set the sub progress state /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void OpProgress::SubProgress(unsigned long SubTotal,string Op)
+{
+ this->SubTotal = SubTotal;
+ SubOp = Op;
+ Percent = Current*100.0/Total;
+ Update();
+}
+ /*}}}*/
+// OpProgress::CheckChange - See if the display should be updated /*{{{*/
+// ---------------------------------------------------------------------
+/* Progress calls are made so frequently that if every one resulted in
+ an update the display would be swamped and the system much slower.
+ This provides an upper bound on the update rate. */
+bool OpProgress::CheckChange(float Interval)
+{
+ // New major progress indication
+ if (Op != LastOp)
+ {
+ MajorChange = true;
+ LastOp = Op;
+ return true;
+ }
+ MajorChange = false;
+
+ if ((int)LastPercent == (int)Percent)
+ return false;
+ LastPercent = Percent;
+
+ // Check time delta
+ struct timeval Now;
+ gettimeofday(&Now,0);
+ double Diff = Now.tv_sec - LastTime.tv_sec + (Now.tv_usec - LastTime.tv_usec)/1000000.0;
+ if (Diff < Interval)
+ return false;
+ LastTime = Now;
+ return true;
+}
+ /*}}}*/
+// OpTextProgress::Done - Clean up the display /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void OpTextProgress::Done()
+{
+ if (NoUpdate == false && OldOp.empty() == false)
+ {
+ char S[300];
+ snprintf(S,sizeof(S),"\r%s",OldOp.c_str());
+ Write(S);
+ cout << endl;
+ OldOp = string();
+ }
+}
+ /*}}}*/
+// OpTextProgress::Update - Simple text spinner /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void OpTextProgress::Update()
+{
+ if (CheckChange(0) == false)
+ return;
+
+ // No percent spinner
+ if (NoUpdate == true)
+ {
+ if (MajorChange == false)
+ return;
+ cout << Op << endl;
+ return;
+ }
+
+ // Erase the old text and 'log' the event
+ char S[300];
+ if (MajorChange == true && OldOp.empty() == false)
+ {
+ snprintf(S,sizeof(S),"\r%s",OldOp.c_str());
+ Write(S);
+ cout << endl;
+ }
+
+ // Print the spinner
+ snprintf(S,sizeof(S),"\r%s... %u%%",Op.c_str(),(unsigned int)Percent);
+ Write(S);
+
+ OldOp = Op;
+}
+ /*}}}*/
+// OpTextProgress::Write - Write the progress string /*{{{*/
+// ---------------------------------------------------------------------
+/* This space fills the end to overwrite the previous text */
+void OpTextProgress::Write(const char *S)
+{
+ cout << S;
+ for (unsigned int I = strlen(S); I < LastLen; I++)
+ cout << ' ';
+ cout << '\r' << flush;
+ LastLen = strlen(S);
+}
+ /*}}}*/
diff --git a/apt-pkg/contrib/progress.h b/apt-pkg/contrib/progress.h
new file mode 100644
index 000000000..39e770fa3
--- /dev/null
+++ b/apt-pkg/contrib/progress.h
@@ -0,0 +1,84 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: progress.h,v 1.1 1998/07/21 05:33:21 jgg Exp $
+/* ######################################################################
+
+ OpProgress - Operation Progress
+
+ This class allows lengthy operations to communicate their progress
+ to the GUI. The progress model is simple and is not designed to handle
+ the complex case of the multi-activity aquire class.
+
+ The model is based on the concept of an overall operation consisting
+ of a series of small sub operations. Each sub operation has it's own
+ completion status and the overall operation has it's completion status.
+ The units of the two are not mixed and are completely independent.
+
+ The UI is expected to subclass this to provide the visuals to the user.
+
+ ##################################################################### */
+ /*}}}*/
+// Header section: pkglib
+#ifndef PKGLIB_PROGRESS_H
+#define PKGLIB_PROGRESS_H
+
+#ifdef __GNUG__
+#pragma interface "apt-pkg/progress.h"
+#endif
+
+#include <string>
+#include <sys/time.h>
+
+class OpProgress
+{
+ unsigned long Current;
+ unsigned long Total;
+ unsigned long Size;
+ unsigned long SubTotal;
+ float LastPercent;
+
+ // Change reduction code
+ struct timeval LastTime;
+ string LastOp;
+
+ protected:
+
+ string Op;
+ string SubOp;
+ float Percent;
+
+ bool MajorChange;
+
+ bool CheckChange(float Interval = 0.7);
+ virtual void Update() {};
+
+ public:
+
+ void Progress(unsigned long Current);
+ void SubProgress(unsigned long SubTotal,string Op);
+ void OverallProgress(unsigned long Current,unsigned long Total,
+ unsigned long Size,string Op);
+
+ OpProgress();
+ virtual ~OpProgress() {};
+};
+
+class OpTextProgress : public OpProgress
+{
+ protected:
+
+ string OldOp;
+ bool NoUpdate;
+ unsigned long LastLen;
+ virtual void Update();
+ void Write(const char *S);
+
+ public:
+
+ void Done();
+
+ OpTextProgress(bool NoUpdate = false) : NoUpdate(NoUpdate), LastLen(0) {};
+ virtual ~OpTextProgress() {Done();};
+};
+
+#endif