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<P><FONT SIZE="5">9.12 Fixeols</FONT><BR>
<P>The <SAMP>fixeols</SAMP> command takes two filename
arguments: an input file and an output file. It reads in the
input file and writes it to the output file changing all the
end of line control character sequences to the local format.
It can also take one filename argument, in which case it
replaces the target file with its transformation.
<P>
<PRE>
Syntax : fixeols = "fixeols" s filename [s filename]
Examples: fixeols imported.hak result.kln
fixeols sloth.dat
</PRE>
<P>The <SAMP>fixeols</SAMP> command works by parsing the
input file into alternating runs of printable characters
(ASCII 20 to ASCII 126) and runs of non-printable characters
(all the others). It then
parses each run of non-printable characters from left to
right into subruns of non-printables not containing the same
character twice. It then replaces each subrun with a native
EOL. (Note: A native EOL can be inserted into a text
file in a portable manner simply by writing
"<TT>\n</TT>" to the text output stream). For example,
if a native EOL is <SAMP>X</SAMP>, and <SAMP>ABCD</SAMP> are
non-printable characters, and the file to be converted is
<P>
<PRE>
thisABisABCDanABABexampleABCCCof the conversion.
</PRE>
<P>then <SAMP>fixeols</SAMP> would produce
<P>
<PRE>
thisXisXanXXexampleXXXof the conversion.
</PRE>
<P>The <SAMP>fixeols</SAMP> command was devised to solve the
problem created sometimes when text files are moved from one
machine to another (e.g. with the Kermit program) using a
binary transfer mode rather than a text transfer mode. If
such a transfer is made, and the text file line termination
conventions differ on the two machines, one can wind up with
a set of text files with improperly terminated lines. This
can cause problems on a number of fronts, but in particular
affects regression testing which relies heavily on exact
comparisons between files. The <SAMP>fixeols</SAMP> command
provides a solution to this problem by providing a portable
way to "purify" text files whose end of lines have
become incorrect. The regression testing scripts all apply
<SAMP>fixeols</SAMP> to their input and output files before
each test.
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