mcsimports CSV input file format derived from RFC4180 and cpimport

   1.  Each record is located on a separate line, delimited by a line

       break (LF or CRLF).  For example:

       aaa,bbb,ccc LF

       zzz,yyy,xxx LF

       aaa,bbb,ccc CRLF

       zzz,yyy,xxx CRLF

   2.  The last record in the file may or may not have an ending line

       break.  For example:

       aaa,bbb,ccc LF

       zzz,yyy,xxx

   3.  There maybe an optional header line appearing as the first line

       of the file with the same format as normal record lines. This

       header will contain names corresponding to the fields in the file

       and should contain the same number of fields as the records in

       the rest of the file (the presence of the header line should be

       indicated via the optional "header" command line argument of

	   mcsimport). If a header is specified it can be used as referrence

	   in mcsimport's mapping file. [Possible extension for the future]

	   For example:

       field_name,field_name,field_name LF

       aaa,bbb,ccc LF

       zzz,yyy,xxx LF

   4.  Within the header and each record, there may be one or more

       fields, separated by a delimiter (default comma). Each line 

	   should contain the same number of fields throughout the file.

	   Spaces are considered part of a field and should not be ignored.

	   The last field in the record must not be followed by a delimiter.

	   For example:

       aaa,bbb,ccc

   5.  Each field may or may not be enclosed by an enclosing character

       (default double quotes). If fields are not enclosed by an enclosing

	   character, the enclosing character may not appear inside the fields.

	   For example:

       "aaa","bbb","ccc" LF

       zzz,yyy,xxx

   6.  Fields containing line breaks (LF or CRLF), delimiters, and enclosing

       characters should be enclosed in enclosing characters.  For example:

       "aaa","b LF

       bb","ccc" LF

	   zzz,yyy,xxx

   7.  If enclosing characters are used to enclose fields, then an enclosing

       character appearing inside a field must be escaped by preceding it with

       an escaping character. (default double quotes)  For example:

       "aaa","b""bb","ccc"

   8.  An escaping character can escape itself when used in an enclosed field.

       For example with \ as escaping character:

	   "aaa","b\\bb\\","c\cc"