Haskell Utilities

This little package contains two simple programs based on the Haskell lexer developed as part of the Programatica project:

stripcomments - strip blank lines and comments from Haskell files.
layout - simple conversion of layout to explicit braces and semicolons.

For more info, see the README file. The source code can be browsed below, or downloaded from hsutils-1.2.tar.gz.

 Name                    Last modified      Size  
 Parent Directory                             -   
 Lexer/                  2003-10-09 01:27    -   
 stripcomments0.hs       2002-03-19 07:50  267   
 stripcomments.hs        2002-03-19 07:50  456   
 StripComments.hs        2003-10-07 21:56  516   
 layout.hs               2003-10-07 21:55  781   
 Makefile                2003-10-09 01:26  824   
 LICENSE                 2003-10-08 00:14  1.6K  
 L.hs                    2003-10-07 02:03  1.7K  
 README                  2003-12-16 17:36  2.2K  
 README.txt              2003-12-16 17:36  2.2K  
 Unlit.hs                2002-03-19 07:50  3.8K  
 hsutils-1.2.tar.gz      2003-10-09 01:27   15K

NAME

stripcomments - strip blank lines and comments from Haskell files. layout - simple conversion of layout to explicit braces and semicolons

USAGE

	stripcomments file_1 ... file_n
	layout file_1 ... file_n

DESCRIPTION

stripcomments reads Haskell files named on the command line and strips away comments and blank lines. Layout and syntactic correctness is preserved. The result is sent to the standard output.

layout reads Haskell files named on the command line and outputs them on stdout with the braces and semicolons implied by layout made explicit. Comments and white space is preserved. (See also limitations below.) Files whose names end with '.lhs' are assumed to contain literate style Haskell, other files are assumed to contain plain Haskell.

HOW TO COMPILE AND INSTALL

	make
	cp stripcomments /usr/local/bin     # or some other suitable directory
	cp layout /usr/local/bin	    # or some other suitable directory

REQUIREMENTS

The Makefile assumes that a version of GHC that supports --make is installed. GHC 5.02 or later is recommended. Be prepared that Lexer/HsLex.hs takes a long time to compile.

The programs are implemented in pure Haskell 98, and can also be loaded in Hugs 98.

LIMITATIONS

The program layout does not support full Haskell 98 layout: it does not implement the part that requires interaction with the parser. For example, the program will not correctly translate

	let x=1 in x+x

but will correctly translate

	let x=1
	in x+x

Also, the program layout handles literate style Haskell files by converting literate comments to ordinary nested comments. This can result in incorrect code when literate comments contain "{-" or "-}".

VERSIONS

1.2 Package renamed to hsutils and includes the program layout in addition to stripcomments.
1.1 Bug fix: avoid outputting a leading blank line for modules that start with one or more lines of whitespace.
1.0 Initial release

AUTHOR

Thomas Hallgren http://ogi.altocumulus.org/~hallgren/

OGI School of Science & Engineering
Oregon Health & Science University