Difference between revisions of "Truxton file tell"

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=Syntax=
 
=Syntax=
 
<syntaxhighlight lang="C">
 
<syntaxhighlight lang="C">
int64_t truxton_file_tell( uint64_t file_handle )
+
int64_t truxton_file_tell( uint64_t file_handle );
 
</syntaxhighlight>
 
</syntaxhighlight>
  
 
=Parameters=
 
=Parameters=
 
==<code>file_handle</code>==
 
==<code>file_handle</code>==
 
 
The handle created by the [[truxton_file_open_id]] or [[truxton_file_open_md5]] call.
 
The handle created by the [[truxton_file_open_id]] or [[truxton_file_open_md5]] call.
  
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=Sample=
 
=Sample=
 
 
<syntaxhighlight lang="C" highlight="12">
 
<syntaxhighlight lang="C" highlight="12">
 
int does_file_have_deep_philosophical_meaning(uint64_t truxton)
 
int does_file_have_deep_philosophical_meaning(uint64_t truxton)

Revision as of 06:56, 10 June 2020

This tells you the offset into the opened file where the next read will take place.

Syntax

int64_t truxton_file_tell( uint64_t file_handle );

Parameters

file_handle

The handle created by the truxton_file_open_id or truxton_file_open_md5 call.

Return value

The offset into the file where the next byte will be read from.

Sample

int does_file_have_deep_philosophical_meaning(uint64_t truxton)
{
   uint64_t file = truxton_file_open_id(truxton, "5ed3aeb7-3da4-5f5c-8c8f-af5200000000");

   if ( file != 0 )
   {
      return(0);
   }

   truxton_file_seek(file, 42, 0 );

   int64_t read_position = truxton_file_tell(file);

   truxton_file_close(file);
   truxton_file_free(file);

   if ( read_position == 42 )
   {
      return(1);
   }

   return(0)
}