X-Git-Url: https://feistymeow.org/gitweb/?a=blobdiff_plain;f=nucleus%2Flibrary%2Ffilesystem%2Fhuge_file.cpp;h=ae8382950965b9232c1a2150add1fd5c55070a1b;hb=d8b495333de90eab06c1b3f272fefd4bad4fcc9d;hp=33b4672a2f23f50d3cbe81324e5719c02a5c32d1;hpb=b51411a29f1a751a09e69f5676afeea24a94ac83;p=feisty_meow.git

diff --git a/nucleus/library/filesystem/huge_file.cpp b/nucleus/library/filesystem/huge_file.cpp
index 33b4672a..ae838295 100644
--- a/nucleus/library/filesystem/huge_file.cpp
+++ b/nucleus/library/filesystem/huge_file.cpp
@@ -20,6 +20,11 @@
 #include <basis/guards.h>
 
 #include <stdio.h>
+#ifndef __WIN32__
+  #include <sys/time.h>
+#else
+  #include <time.h>
+#endif
 
 #undef LOG
 #define LOG(to_print) printf("%s::%s: %s\n", static_class_name(), func, astring(to_print).s())
@@ -42,6 +47,8 @@ huge_file::~huge_file()
   WHACK(_real_file);
 }
 
+const astring &huge_file::name() const { return _real_file->name(); }
+
 void huge_file::flush() { _real_file->flush(); }
 
 bool huge_file::truncate() { return _real_file->truncate(); }
@@ -276,5 +283,44 @@ outcome huge_file::write(const byte_array &to_write, int &size_written)
   return OKAY;
 }
 
+basis::outcome huge_file::touch()
+{
+  FUNCDEF("touch")
+  if (filename(_real_file->name()).exists()) {
+    // file exists, so just update time.
+#ifndef __WIN32__
+    int ret = utimes(_real_file->name().observe(), NULL_POINTER);
+    if (ret != 0)
+      return FAILURE;
+#else
+    // open the file, although the function says create in its name...
+    HANDLE f = CreateFile(_real_file->name().observe(),
+        GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,
+        NULL_POINTER, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL_POINTER);
+    if (!f) {
+      LOG(a_sprintf("failed to open file %s", _real_file->name().observe()));
+      return FAILURE;
+    }
+    // get current system time in UTC.
+    SYSTEMTIME *st = new SYSTEMTIME;
+    GetSystemTime(st);
+    // convert system time into file time.
+    FILETIME *t = new FILETIME;
+    SystemTimeToFileTime(st, t);
+    // set the file's time.
+    SetFileTime(f, NULL_POINTER, t, t);
+#endif
+  } else {
+    // file doesn't exist yet.
+    byte_array junk(1);
+    int written;
+    outcome ret = write(junk, written);
+    if (ret != OKAY) ret;
+    if (!truncate())
+      return FAILURE;
+  }
+  return OKAY;
+}
+
 } //namespace.