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将Python源代码导出成HTML文件并带语法高亮
## {{{ http://code.activestate.com/recipes/578178/ (r11)
'''Add Syntax highlighting to Python source code'''
__all__ = ['colorize','build_page','default_css','default_html','ansi_colorize','default_ansi']
__author__ = 'Raymond Hettinger'
import keyword,tokenize,cgi,functools
def is_builtin(s):
'Return True if s is the name of a builtin'
return s in vars(__builtins__)
def combine_range(lines,start,end):
'Join content from a range of lines between start and end'
(srow,scol),(erow,ecol) = start,end
if srow == erow:
rows = [lines[srow-1][scol:ecol]]
else:
rows = [lines[srow-1][scol:]] + lines[srow: erow-1] + [lines[erow-1][:ecol]]
return ''.join(rows),end
def isolate_tokens(source):
'Generate chunks of source and identify chunks to be highlighted'
lines = source.splitlines(True)
lines.append('')
readline = functools.partial(next,iter(lines),'')
kind = tok_str = ''
tok_type = tokenize.COMMENT
written = (1,0)
for tok in tokenize.generate_tokens(readline):
prev_tok_type,prev_tok_str = tok_type,tok_str
tok_type,tok_str,(srow,ecol),logical_lineno = tok
kind = ''
if tok_type == tokenize.COMMENT:
kind = 'comment'
elif tok_type == tokenize.OP and tok_str[:1] not in '{}[](),.:;':
kind = 'operator'
elif tok_type == tokenize.STRING:
kind = 'string'
if prev_tok_type == tokenize.INDENT or scol==0:
kind = 'docstring'
elif tok_type == tokenize.NAME:
if tok_str in ('def','class','import','from'):
kind = 'definition'
elif prev_tok_str in ('def','class'):
kind = 'defname'
elif keyword.iskeyword(tok_str):
kind = 'keyword'
elif is_builtin(tok_str) and prev_tok_str != '.':
kind = 'builtin'
line_upto_token,written = combine_range(lines,written,scol))
line_thru_token,ecol))
yield kind,line_upto_token,line_thru_token
default_ansi = {
'comment': '\033[0;31m','string': '\033[0;32m','docstring': '\033[0;32m','keyword': '\033[0;33m','builtin': '\033[0;35m','definition': '\033[0;33m','defname': '\033[0;34m','operator': '\033[0;33m',}
def colorize_ansi(source,colors=default_ansi):
'Add Syntax highlighting to Python source code using ANSI escape sequences'
# http://en.wikipedia.org/wiki/ANSI_escape_code
result = []
for kind,line_thru_token in isolate_tokens(source):
if kind:
result += [line_upto_token,colors[kind],line_thru_token,'\033[0m']
else:
result += [line_upto_token,line_thru_token]
return ''.join(result)
def colorize_html(source):
'Convert Python source code to an HTML fragment with colorized markup'
result = ['
\n']for kind,line_thru_token in isolate_tokens(source):
if kind:
result += [cgi.escape(line_upto_token),'' % kind,cgi.escape(line_thru_token),'']
else:
result += [cgi.escape(line_upto_token),cgi.escape(line_thru_token)]
result += ['
\n']return ''.join(result)
default_css = {
'.comment': '{color: crimson;}','.string': '{color: forestgreen;}','.docstring': '{color: forestgreen; font-style:italic;}','.keyword': '{color: darkorange;}','.builtin': '{color: purple;}','.definition': '{color: darkorange; font-weight:bold;}','.defname': '{color: blue;}','.operator': '{color: brown;}',}
default_html = '''\
/p>
"http://www.w3.org/TR/html4/strict.dtd">
{title}{css}
{body}
'''
def build_page(source,title='python',css=default_css,html=default_html):
'Create a complete HTML page with colorized Python source code'
css_str = '\n'.join(['%s %s' % item for item in css.items()])
result = colorize_html(source)
title = cgi.escape(title)
return html.format(title=title,css=css_str,body=result)
if __name__ == '__main__':
import sys,argparse,webbrowser,os
parser = argparse.ArgumentParser(
description = 'Add Syntax highlighting to Python source')
parser.add_argument('sourcefile',Metavar = 'SOURCEFILE',help = 'File containing Python sourcecode')
parser.add_argument('-b','--browser',action = 'store_true',help = 'launch a browser to show results')
parser.add_argument('-c','--complete',help = 'build a complete html webpage')
parser.add_argument('-s','--section',help = 'show an HTML section rather than a complete webpage')
args = parser.parse_args()
if args.section and (args.browser or args.complete):
parser.error('The -s/--section option is incompatible with '
'the -b/--browser or -c/--complete options')
sourcefile = args.sourcefile
with open(sourcefile) as f:
source = f.read()
if args.complete or args.browser:
encoded = build_page(source,title=sourcefile)
elif args.section:
encoded = colorize_html(source)
else:
encoded = colorize_ansi(source)
if args.browser:
htmlfile = os.path.splitext(os.path.basename(sourcefile))[0] + '.html'
with open(htmlfile,'w') as f:
f.write(encoded)
webbrowser.open('file://' + os.path.abspath(htmlfile))
else:
sys.stdout.write(encoded)
运行：
# Show Syntax highlighted code in the terminal window
$ ./highlight.py myfile.py
# Colorize myfile.py and display in a brower
$ ./highlight.py -b myfile.py
# Create an HTML section that can be embedded in an existing webpage.
./highlight.py -s myfile.py
# Create a complete HTML file
$ ./highlight.py -c myfile.py > myfile.html
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