readfile(1F
U)
NIX System V(Form and Menu Language Interpreter Utilitier
s)
eadfile(1F)


NAME
      readfile, longline - reads file, gets longest line

SYNOPSIS
      readfile file
      longline [file]

DESCRIPTION
      The readfile function reads file and copies it to stdout.  No translation
      of NEWLINE is done.  It keeps track of the longest line it reads and if
      there is a subsequent call to longline, the length of that line,
      including the NEWLINE character, is returned.

      The longline function returns the length, including the NEWLINE
      character, of the longest line in file.  If file is not specified, it
      uses the file named in the last call to readfile.

EXAMPLES
      Here is a typical use of readfile and longline in a text frame definition
      file:

               .
               .
               .
            text="`readfile myfile`"
            columns=`longline`
               .
               .
               .

DIAGNOSTICS
      If file does not exist, readfile will return FALSE (that is, the
      expression will have an error return).

      longline returns 0 if a readfile has not previously been issued.

NOTES
      More than one descriptor can call readfile in the same frame definition
      file.  In text frames, if one of those calls is made from the text
      descriptor, then a subsequent use of longline will always get the longest
      line of the file read by the readfile associated with the text
      descriptor, even if it was not the most recent use of readfile.

SEE ALSO
      cat(1)









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