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python LessCss Compiler.
A compiler written in python 3 for the lesscss language.
For those of us not willing/able to have node.js installed in our environment.
Not all features of lesscss are supported (yet).
Some features wil probably never be supported (JavaScript evaluation).
This program uses PLY (Python Lex-Yacc) to tokenize/parse the input and is
considerably slower than the nodejs compiler. The plan is to utilize this
to build in proper syntax checking and perhaps YUI compressing.
This is an early version, so you are likly to find bugs.
For more information on lesscss:
Development files
* python 3+
* ply (Python Lex-Yacc) python 3 version
For more information on ply:
python3 install
or simply place the package into your python path.
Compiler script Usage
usage: lesscpy [-h] [-v] [-I INCLUDE] [-V] [-x] [-X] [-t] [-s SPACES] [-o OUT]
[-r] [-f] [-m] [-D] [-g] [-S] [-L] [-N]
LessCss Compiler
positional arguments:
target less file or directory
optional arguments:
-h, --help show this help message and exit
-v, --version show program's version number and exit
Included less-files (comma separated)
-V, --verbose Verbose mode
Formatting options:
-x, --minify Minify output
-X, --xminify Minify output, no end of block newlines
-t, --tabs Use tabs
-s SPACES, --spaces SPACES
Number of startline spaces (default 2)
Directory options:
Compiles all *.less files in directory that have a newer timestamp than
it's css file.
-o OUT, --out OUT Output directory
-r, --recurse Recursive into subdirectorys
-f, --force Force recompile on all files
-m, --min-ending Add '.min' into output filename. eg, name.min.css
-D, --dry-run Dry run, do not write files
-g, --debug Debugging information
-S, --scopemap Scopemap
-L, --lex-only Run lexer on target
-N, --no-css No css output
Supported features
* Variables
* String interpolation
* Mixins
* mixins (Nested)
* mixins (Nested (Calls))
* mixins (closures)
* mixins (recursive)
* Guard expressions
* Parametered mixins (class)
* Parametered mixins (id)
* @arguments
* Nesting
* Escapes ~/e()
* Expressions
* Keyframe blocks
* Color functions:
** lighten
** darken
** saturate
** desaturate
** spin
** hue
** mix
** saturation
** lightness
* Other functions:
** round
** increment
** decrement
** format '%('
** add
** iscolor
** isnumber
** isurl
** isstring
** iskeyword
* Keyframe blocks
Differences from lessc.js
* All MS filters and other strange vendor constructs must be escaped
* All colors are auto-formatted to #nnnnnn. eg, #f7e923
* Does not preserve css comments
Not supported
* JavaScript evaluation
See the LICENSE file
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