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-rw-r--r--src/settings.h29
1 files changed, 27 insertions, 2 deletions
diff --git a/src/settings.h b/src/settings.h
index 4bc22eaa1..c08d54a47 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -172,7 +172,8 @@ public:
*/
bool getUpdatedConfigObject(std::istream &is,
core::list<std::string> &dst,
- core::map<std::string, bool> &updated)
+ core::map<std::string, bool> &updated,
+ bool &value_changed)
{
JMutexAutoLock lock(m_mutex);
@@ -219,6 +220,7 @@ public:
infostream<<"Changing value of \""<<name<<"\" = \""
<<value<<"\" -> \""<<newvalue<<"\""
<<std::endl;
+ value_changed = true;
}
dst.push_back(name + " = " + newvalue + line_end);
@@ -241,6 +243,7 @@ public:
core::list<std::string> objects;
core::map<std::string, bool> updated;
+ bool something_actually_changed = false;
// Read and modify stuff
{
@@ -254,12 +257,34 @@ public:
}
else
{
- while(getUpdatedConfigObject(is, objects, updated));
+ while(getUpdatedConfigObject(is, objects, updated,
+ something_actually_changed));
}
}
JMutexAutoLock lock(m_mutex);
+ // If something not yet determined to have been changed, check if
+ // any new stuff was added
+ if(!something_actually_changed){
+ for(core::map<std::string, std::string>::Iterator
+ i = m_settings.getIterator();
+ i.atEnd() == false; i++)
+ {
+ if(updated.find(i.getNode()->getKey()))
+ continue;
+ something_actually_changed = true;
+ break;
+ }
+ }
+
+ // If nothing was actually changed, skip writing the file
+ if(!something_actually_changed){
+ infostream<<"Skipping writing of "<<filename
+ <<" because content wouldn't be modified"<<std::endl;
+ return true;
+ }
+
// Write stuff back
{
std::ofstream os(filename);