seeking out problem file.

[feisty_meow.git] / nucleus / library / filesystem / huge_file.cpp

diff --git a/nucleus/library/filesystem/huge_file.cpp b/nucleus/library/filesystem/huge_file.cpp
index acf9adc7be38d55ea6bc1908edd3e6c086f33cbb..bdc1522835e1a3956a6c5476ceb91d858b44f824 100644 (file)
--- a/nucleus/library/filesystem/huge_file.cpp
+++ b/nucleus/library/filesystem/huge_file.cpp
@@ -20,6 +20,7 @@
 #include <basis/guards.h>
 
 #include <stdio.h>
+#include <sys/time.h>
 
 #undef LOG
 #define LOG(to_print) printf("%s::%s: %s\n", static_class_name(), func, astring(to_print).s())
@@ -124,7 +125,7 @@ double huge_file::length()
         // something malfunctioned.  we should always be able to get back to
         // the last good size we found if the file is static.
         LOG(a_sprintf("failed to seek back to best highest %.0f on ",
-            best_highest) + _real_file->filename());
+            best_highest) + _real_file->name());
         // try to repair our ideas about the file by starting the process
         // over.
 //hmmm: count the number of times restarted and bail after N.
@@ -134,7 +135,7 @@ double huge_file::length()
           // the heck with this.  we can't even go back to the start.  this
           // file seems to be screwed up now.
           LOG(astring("failed to seek back to start of file!  on ")
-              + _real_file->filename());
+              + _real_file->name());
           return 0;
         }
         // reset the rest of the positions for our failed attempt to return
@@ -276,5 +277,24 @@ outcome huge_file::write(const byte_array &to_write, int &size_written)
   return OKAY;
 }
 
+basis::outcome huge_file::touch()
+{
+  if (filename(_real_file->name()).exists()) {
+    // file exists, so just update time.
+    int ret = utimes(_real_file->name().observe(), NIL);
+    if (ret != 0)
+      return FAILURE;
+  } 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.