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python源代码语法高亮输出

python 水墨上仙 2150次浏览 已收录 手机上查看

本代码可以对python的源代码进行语法高亮后输出html文件进行显示

## {{{ 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, scol), (erow, 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, (srow, scol))
 line_thru_token, written = combine_range(lines, written, (erow, 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_upto_token, 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 = ['<pre class="python">\n']
 for kind, line_upto_token, line_thru_token in isolate_tokens(source):
 if kind:
 result += [cgi.escape(line_upto_token),
 '<span class="%s">' % kind,
 cgi.escape(line_thru_token),
 '</span>']
 else:
 result += [cgi.escape(line_upto_token),
 cgi.escape(line_thru_token)]
 result += ['</pre>\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 = '''\
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
 "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<title> {title} </title>
<style type="text/css">
{css}
</style>
</head>
<body>
{body}
</body>
</html>
'''
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', action = 'store_true',
 help = 'build a complete html webpage')
 parser.add_argument('-s', '--section', action = 'store_true',
 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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