From 461552b8d0a714d3e931c6cf3bf389e8746c46c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Fri, 16 Jan 2026 20:02:03 +0800
Subject: [PATCH] DynamicInterval: reruns `prepare` code before next interval

Fixes #2152
---
 src/detection/cpuusage/cpuusage.c | 3 ++-
 src/detection/diskio/diskio.c     | 2 ++
 src/detection/netio/netio.c       | 2 ++
 src/fastfetch.c                   | 5 +++++
 src/logo/logo.c                   | 2 +-
 5 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/detection/cpuusage/cpuusage.c b/src/detection/cpuusage/cpuusage.c
index 40e569528..72393aa45 100644
--- a/src/detection/cpuusage/cpuusage.c
+++ b/src/detection/cpuusage/cpuusage.c
@@ -9,7 +9,8 @@ static uint64_t startTime;
 
 void ffPrepareCPUUsage(void)
 {
-    assert(cpuTimes1.elementSize == 0);
+    if (cpuTimes1.elementSize != 0) return; // Already prepared
+
     ffListInit(&cpuTimes1, sizeof(FFCpuUsageInfo));
     ffGetCpuUsageInfo(&cpuTimes1);
     startTime = ffTimeGetNow();
diff --git a/src/detection/diskio/diskio.c b/src/detection/diskio/diskio.c
index 9413a7125..00f7bc244 100644
--- a/src/detection/diskio/diskio.c
+++ b/src/detection/diskio/diskio.c
@@ -11,6 +11,8 @@ void ffPrepareDiskIO(FFDiskIOOptions* options)
 {
     if (options->detectTotal) return;
 
+    if (time1 != 0) return; // Already prepared
+
     ffListInit(&ioCounters1, sizeof(FFDiskIOResult));
     ffDiskIOGetIoCounters(&ioCounters1, options);
     time1 = ffTimeGetNow();
diff --git a/src/detection/netio/netio.c b/src/detection/netio/netio.c
index 666321c99..48d6ba7b1 100644
--- a/src/detection/netio/netio.c
+++ b/src/detection/netio/netio.c
@@ -9,6 +9,8 @@ void ffPrepareNetIO(FFNetIOOptions* options)
 {
     if (options->detectTotal) return;
 
+    if (time1 != 0) return; // Already prepared
+
     ffListInit(&ioCounters1, sizeof(FFNetIOResult));
     ffNetIOGetIoCounters(&ioCounters1, options);
     time1 = ffTimeGetNow();
diff --git a/src/fastfetch.c b/src/fastfetch.c
index d0882b15e..60df8051f 100644
--- a/src/fastfetch.c
+++ b/src/fastfetch.c
@@ -811,6 +811,11 @@ static void run(FFdata* data)
         }
         else
             break;
+
+        if (useJsonConfig)
+            ffPrintJsonConfig(data, true /* prepare */);
+        else
+            ffPrepareCommandOption(data);
     }
 
     if (data->resultDoc)
diff --git a/src/logo/logo.c b/src/logo/logo.c
index 2f009adc0..1bd6cb8e9 100644
--- a/src/logo/logo.c
+++ b/src/logo/logo.c
@@ -702,7 +702,7 @@ void ffLogoPrintLine(void)
         printf("\033[%uC", instance.state.logoWidth);
 
     if (instance.state.dynamicInterval > 0)
-        fputs("\033[K", stdout);
+        fputs("\033[K", stdout); // Clear to the end of the line
 
     ++instance.state.keysHeight;
 }