method

tell

v1_8_7_330 - Show latest stable - 0 notes - Class: IO

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tell() public

Returns the current offset (in bytes) of ios.

f = File.new("testfile")
f.pos    #=> 0
f.gets   #=> "This is line one\n"
f.pos    #=> 17

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/*
 *  call-seq:
 *     ios.pos     => integer
 *     ios.tell    => integer
 *  
 *  Returns the current offset (in bytes) of <em>ios</em>.
 *     
 *     f = File.new("testfile")
 *     f.pos    #=> 0
 *     f.gets   #=> "This is line one\n"
 *     f.pos    #=> 17
 */

static VALUE
rb_io_tell(io)
     VALUE io;
{
    rb_io_t *fptr;
    off_t pos;

    GetOpenFile(io, fptr);
    pos = io_tell(fptr);
    if (pos < 0 && errno) rb_sys_fail(fptr->path);
    return OFFT2NUM(pos);
}

tell

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