将Python源代码导出成HTML文件并带语法高亮

发布时间：2020-12-17 17:25:50 所属栏目：Python 来源：网络整理

导读：今天PHP站长网 52php.cn把收集自互联网的代码分享给大家，仅供参考。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

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## {{{ 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': '33[0;31m','string': '33[0;32m','docstring': '33[0;32m','keyword': '33[0;33m','builtin': '33[0;35m','definition': '33[0;33m','defname': '33[0;34m','operator': '33[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,'33[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_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',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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