revamping markdown libraries
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q
185
reporting/md_color.py
Executable file
185
reporting/md_color.py
Executable file
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#!/usr/bin/env python
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import sys,os,re
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from argparse import ArgumentParser
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sys.path.append(os.path.dirname(os.path.realpath(__file__)))
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import ansi
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__author__ = "Ville Rantanen <ville.q.rantanen@gmail.com>"
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__version__ = "0.2"
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''' Rules modified from mistune project '''
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def setup_options():
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''' Create command line options '''
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usage='''
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Markdown syntax color in ansi codes.
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Special syntaxes:
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* Colors: insert string ${C}, where C is one of KRGBYMCWkrgbymcwSUZ
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* Any ANSI control code: ${3A}, ${1;34;42m}, etc..
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'''
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parser=ArgumentParser(description=usage,
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epilog=__author__)
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parser.add_argument("-v","--version",action="version",version=__version__)
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parser.add_argument("-D",action="store_true",dest="debug",default=False,
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help="Debug mode")
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parser.add_argument("--dc",action="store_true",dest="dark_colors",default=False,
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help="Use dark colorscheme, better for white background terminals.")
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parser.add_argument("--no-color","-n",action="store_false",dest="color",default=True,
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help="Disable color.")
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parser.add_argument("-z",action="store_true",dest="zero",default=False,
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help="Reset coloring at the end of each line.")
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parser.add_argument("filename",type=str,
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help="File to show, - for stdin")
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opts=parser.parse_args()
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return opts
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def parse(data):
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data=[[None,row] for row in data]
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block='text'
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new_block='text'
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multiline_block=False
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# Parse styles
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for i,line in enumerate(data):
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row=line[1]
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if line[0] is not None:
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# Previous lines have set the style already
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continue
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for match in blocks:
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if block_match[match]['re'].match(row):
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new_block=match
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if match.startswith('multiline'):
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if multiline_block:
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multiline_block=False
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else:
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multiline_block=match
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break
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if multiline_block:
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new_block=multiline_block
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# Lists must end with empty line
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if new_block not in ('empty','list_bullet') and block.startswith('list_'):
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new_block='list_loose'
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if 'mod' in block_match[match]:
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# Style sets block in previous or next lines
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data[i+block_match[match]['mod']['pos']][0]=block_match[match]['mod']['name']
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data[i][0]=new_block
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if new_block!=block:
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block=new_block
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return data
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def colorize(data,remove_colors=False,dark_colors=False,debug=False):
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# Start inserting colors, and printing
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bc=ansi.code()
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colorized=[]
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cs='dc' if dark_colors else 'bc'
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csc=cs+'c'
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for i,line in enumerate(data):
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row=line[1]
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block=line[0]
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multiline_block=block.startswith('multiline')
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if multiline_block:
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row=block_match[block][csc]+row
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if block_match[block][cs]:
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row=block_match[block]['re'].sub(block_match[block][cs],row)
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# No coloring inside block_code, nor multiline
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if not (multiline_block or block=='block_code'):
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for match in inlines:
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if inline_match[match]['re'].search(row):
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row=inline_match[match]['re'].sub(inline_match[match][cs]+block_match[block][csc],row)
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if remove_colors:
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colored=bc.nocolor_string(row)
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else:
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colored=bc.color_string(row)
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if debug:
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multistr="*" if multiline_block else " "
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colored="{:<18}{:}:".format(data[i][0],multistr)+colored
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colorized.append(colored)
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return colorized
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# re: regular expression, bc: subract value bright colors, bcc: continue with this color after inline
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block_match={
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'block_code': {'re':re.compile(r'^( {4}[^*])(.*)$'),
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'bc' :'${Z}${c}\\1\\2', 'bcc':'${Z}${c}',
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'dc' :'${Z}${m}\\1\\2', 'dcc':'${Z}${m}'}, # code
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'multiline_code' : {'re':re.compile(r'^ *(`{3,}|~{3,}) *(\S*)'),
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'bc' :'${Z}${c}\\1\\2', 'bcc':'${Z}${c}',
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'dc' :'${Z}${m}\\1\\2', 'dcc':'${Z}${m}'}, # ```lang
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'block_quote': {'re':re.compile(r'^(>[ >]* )'),
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'bc':'${K}\\1${Z}','bcc':'${Z}',
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'dc':'${Y}\\1${Z}','dcc':'${Z}'}, # > > quote
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'hrule': {'re':re.compile(r'^ {0,3}[-*_]([-*_]){2,}$'),
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'bc':False,'bcc':'${Z}',
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'dc':False,'dcc':'${Z}'}, # ----
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'heading' : {'re':re.compile(r'^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)'),
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'bc':'${W}\\1 ${U}\\2','bcc':'${W}${U}',
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'dc':'${B}\\1 ${U}\\2','dcc':'${B}${U}'}, # # heading
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'lheading' : {'re':re.compile(r'^(=+|-+)$'),
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'bc':'${W}\\1', 'bcc':'${W}',
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'dc':'${B}\\1', 'dcc':'${B}',
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'mod':{'pos':-1,'name':'lheading.mod'}}, # ======= under header
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'lheading.mod' : {'re':re.compile(r'^([^\n]+)'),
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'bc':'${W}\\1', 'bcc':'${W}',
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'dc':'${B}\\1', 'dcc':'${B}'}, # over the ======= under header
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'list_bullet': {'re':re.compile(r'^( *)([*+-]|[\d\.]+)( +)'),
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'bc':'\\1${y}\\2${Z}\\3','bcc':'${Z}',
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'dc':'\\1${r}\\2${Z}\\3','dcc':'${Z}'}, # * or 1.
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'list_loose': {'re':None,
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'bc':False,'bcc':'${Z}',
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'dc':False,'dcc':'${Z}'},
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'text': {'re':re.compile(r'^([^\n]+)'),
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'bc':'${Z}\\1','bcc':'${Z}',
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'dc':'${Z}\\1','dcc':'${Z}'},
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'empty': {'re':re.compile(r'(^$)'),
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'bc':'${Z}\\1','bcc':'${Z}',
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'dc':'${Z}\\1','dcc':'${Z}'},
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}
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blocks=['block_quote', 'multiline_code','hrule', 'heading','lheading','list_bullet', 'block_code', 'text', 'empty']
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inline_match={
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'bold1': {'re':re.compile(r'(^| )(_[^_]+_)'),
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'bc':'${W}\\1\\2','dc':'${W}\\1\\2'}, # _bold_
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'bold2': {'re':re.compile(r'(^| )(\*{1,2}[^\*]+\*{1,2})'),
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'bc':'${W}\\1\\2','dc':'${W}\\1\\2'}, # **bold**
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'code': {'re':re.compile(r'([`]+[^`]+[`]+)'),
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'bc':'${c}\\1','dc':'${m}\\1'}, # `code`
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'code_special': {'re':re.compile(r'([`]+[^`]+[`]+)([!>])'),
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'bc':'${c}\\1${g}\\2','dc':'${m}\\1${r}\\2'}, # `code`! or `code`> for markslider
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'link': {'re':re.compile(r'(\[)([^\]]+)(\])(\([^\)]+\))'),
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'bc':'${b}\\1${Z}\\2${b}\\3${U}\\4',
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'dc':'${b}\\1${Z}\\2${b}\\3${U}\\4'}, # [text](link)
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'image': {'re':re.compile(r'(!\[[^\]]+\]\([^\)]+\))'),
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'bc':'${r}\\1','dc':'${g}\\1'}, # 
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'underline': {'re':re.compile(r'(^|\W)(__)([^_]+)(__)'),
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'bc':'\\1\\2${U}\\3${Z}\\4','dc':'\\1\\2${U}\\3${Z}\\4'}, # __underline__
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'strikethrough': {'re':re.compile(r'(~~)([^~]+)(~~)'),
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'bc':'\\1${st}\\2${so}\\3','dc':'\\1${st}\\2${so}\\3'}, # ~~strike~~
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}
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inlines=['bold1','bold2','code_special','code','image','link','underline','strikethrough']
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if __name__ == "__main__":
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opts=setup_options()
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if opts.filename=="-":
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f=sys.stdin
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else:
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f=open(opts.filename,'r')
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data=[]
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# Read data
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for row in f:
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if not row:
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continue
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row=row.decode('utf-8').rstrip("\n\r ")
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data.append(row)
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data=parse(data)
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colored=colorize(data,not opts.color,opts.dark_colors,opts.debug)
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for c in colored:
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sys.stdout.write(c.encode('utf-8'))
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if opts.zero:
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sys.stdout.write(bc.Z)
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sys.stdout.write("\n")
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