From e595eed57dbb22271eab33cc2bb2044bd4062d3b Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Wed, 15 Jan 2025 10:50:29 +0100
Subject: [PATCH] The info files of recordings are now only re-read if they
 have been modified

---
 CONTRIBUTORS |  1 +
 HISTORY      |  2 ++
 recording.c  | 10 +++++++++-
 recording.h  |  3 ++-
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 24f2cf90..dfe3e7bf 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -3375,6 +3375,7 @@ Stefan Hofmann <stefan.hofmann@t-online.de>
  for adding 1 to Utf8BufSize() for worst case
  for adding a header to the backtrace
  for adding parameter checks to strn0cpy()
+ for making the info files of recordings only be re-read if they have been modified
 
 Stefan Blochberger <Stefan.Blochberger@gmx.de>
  for suggesting to automatically display the progress display whenever replay of a
diff --git a/HISTORY b/HISTORY
index f6430326..5dfa829d 100644
--- a/HISTORY
+++ b/HISTORY
@@ -10054,3 +10054,5 @@ Video Disk Recorder Revision History
   to Markus Ehrnsperger).
 - Added a header to the backtrace (thanks to Stefan Hofmann).
 - Added parameter checks to strn0cpy() (thanks to Stefan Hofmann). Same for Utf8Strn0Cpy().
+- The info files of recordings are now only re-read if they have been modified (thanks
+  to Stefan Hofmann).
diff --git a/recording.c b/recording.c
index 411f2947..df6eab83 100644
--- a/recording.c
+++ b/recording.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.c 5.35 2024/09/21 19:18:18 kls Exp $
+ * $Id: recording.c 5.36 2025/01/15 10:50:29 kls Exp $
  */
 
 #include "recording.h"
@@ -356,6 +356,7 @@ void cResumeFile::Delete(void)
 
 cRecordingInfo::cRecordingInfo(const cChannel *Channel, const cEvent *Event)
 {
+  modified = 0;
   channelID = Channel ? Channel->GetChannelID() : tChannelID::InvalidID;
   channelName = Channel ? strdup(Channel->Name()) : NULL;
   ownEvent = Event ? NULL : new cEvent(0);
@@ -420,6 +421,7 @@ cRecordingInfo::cRecordingInfo(const cChannel *Channel, const cEvent *Event)
 
 cRecordingInfo::cRecordingInfo(const char *FileName)
 {
+  modified = 0;
   channelID = tChannelID::InvalidID;
   channelName = NULL;
   ownEvent = new cEvent(0);
@@ -488,6 +490,12 @@ void cRecordingInfo::SetErrors(int Errors)
 bool cRecordingInfo::Read(FILE *f)
 {
   if (ownEvent) {
+     struct stat st;
+     if (fstat(fileno(f), &st))
+        return false;
+     if (modified == st.st_mtime)
+        return true;
+     modified = st.st_mtime;
      cReadLine ReadLine;
      char *s;
      int line = 0;
diff --git a/recording.h b/recording.h
index 8bc0547c..22b5bf2b 100644
--- a/recording.h
+++ b/recording.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.h 5.11 2024/09/19 20:21:58 kls Exp $
+ * $Id: recording.h 5.12 2025/01/15 10:50:29 kls Exp $
  */
 
 #ifndef __RECORDING_H
@@ -64,6 +64,7 @@ public:
 class cRecordingInfo {
   friend class cRecording;
 private:
+  time_t modified;
   tChannelID channelID;
   char *channelName;
   const cEvent *event;