fcasplit - tool to split source code into separate per-routine files
fcasplit [ -f nmft ] [ -c nmcc ] [ -a nmas ] [-noh] [-log]
[ +fo incf ] [ +co incc ] [ +ao incs ]
[ -fo optf ] [ -co optc ] [ -ao opts ] file.ext
fcasplit file.ext [ fca_n ] [ optf [ optc [ opts
[ nmft [ nmcc [ nmas ]]]]]]
fcasplit, used with a command line of either form shown above, splits
file file.ext having a mixture of FORTRAN / C / assembler routines into
separate files n.f or n.c or n.s, "n" being the name of each routine,
creating at the same time a shell script file.shfca and a Make file
file.mkfca either of which can be used to compile all routines
individually. All new files are generated in the current directory,
even if the original file.ext is in a different location.
NOTE that the program does not work on source code written without
having it in mind, since fcasplit looks for special identifying lines
in comments of the source code in the original file, as noted below.
It is able to operate, for instance, on source code output by nypatchy.
Defaults are defined in fcasplit for the names by which the compilers
are called in the generated shell script and Makefile; with the -f, -c,
-a options they could be changed. In Debian GNU/Linux, these defaults
are gcc for the C compiler, gfortran for the FORTRAN compiler, and as
for the assembler.
Defaults are also defined for the options with which they are called;
with the -fo, -co, -ao options they can be re-defined; with the +fo,
+co, +ao options they can be incremented. In Debian GNU/Linux, these
defaults are "-c -g -O2" for the C compiler, "-c -g -O2 -fno-automatic"
for the FORTRAN compiler, and "" (i.e., no flags) for the assembler.
To be backward compatible these options can also be specified by the
positional parameters after the file-name (as in the second form of the
command shown above).
If the -noh option is given (or if the first parameter after the
file-name is "fca_n") the identifying header line of each routine is
not written out. If the -log option is given the name of each routine
is printed on standard output.
Each routine in the original file file.ext must start with an
"CDECK ID>, " in cols. 1-12 for FORTRAN
"/*DECK ID>, " in cols. 1-12 for C
";DECK ID>, " in cols. 1-12 for assembler
"DECK ID>, " in cols. 2-12 or
"DECK ID>, " in cols. 3-12 for anything else
"name" in cols. 13-40 gives the name
In the last two cases, or if "name" contains an extension, the file
created will be "name" without extension .f, .c or .s added to it and
without an entry into the script.
A trailing blank terminates the name, symbol . followed by blank also
terminates, symbols ; < # ! all terminate, symbol */ also
nycheck(1), nydiff(1), nyindex(1), nylist(1), nymerge(1), nypatchy(1),
nyshell(1), nysynopt(1), nytidy(1), yexpand(1)
The reference manual for the Nypatchy suite of programs is available in
compressed PostScript format at the following URL:
This manual page was written by Kevin McCarty <firstname.lastname@example.org> for
the Debian GNU/Linux system (but may be used by others), based on the
help information printed by the fcasplit program when called with no
arguments. Both fcasplit and this man page are licensed under the GNU
General Public License, version 2 or later (at your choice).
Copyright (C) CERN, 1996, 1999 and Kevin B. McCarty, 2008.
Mar 12, 2008