diff options
| -rw-r--r-- | _filters/syntax_highlight.py | 176 | ||||
| -rw-r--r-- | _templates/head.mako | 1 |
2 files changed, 0 insertions, 177 deletions
diff --git a/_filters/syntax_highlight.py b/_filters/syntax_highlight.py deleted file mode 100644 index 2471c43..0000000 --- a/_filters/syntax_highlight.py +++ /dev/null @@ -1,176 +0,0 @@ -import re -import os - -import pygments -from pygments import formatters, util, lexers -import blogofile_bf as bf - -config = {"name": "Syntax Highlighter", - "description": "Highlights blocks of code based on syntax", - "author": "Ryan McGuire", - "css_dir": "/css", - "preload_styles": []} - - -def init(): - #This filter normally only loads pygments styles when needed. - #This will force a particular style to get loaded at startup. - for style in bf.config.filters.syntax_highlight.preload_styles: - css_class = "pygments_{0}".format(style) - formatter = pygments.formatters.HtmlFormatter( - linenos=False, cssclass=css_class, style=style) - write_pygments_css(style, formatter) - - -example = """ - -This is normal text. - -The following is a python code block: - -$$code(lang=python) -import this - -prices = {'apple' : 0.50, #Prices of fruit - 'orange' : 0.65, - 'pear' : 0.90} - -def print_prices(): - for fruit, price in prices.items(): - print "An %s costs %s" % (fruit, price) -$$/code - -This is a ruby code block: - -$$code(lang=ruby) -class Person - attr_reader :name, :age - def initialize(name, age) - @name, @age = name, age - end - def <=>(person) # Comparison operator for sorting - @age <=> person.age - end - def to_s - "#@name (#@age)" - end -end - -group = [ - Person.new("Bob", 33), - Person.new("Chris", 16), - Person.new("Ash", 23) -] - -puts group.sort.reverse -$$/code - -This is normal text -""" - -css_files_written = set() - -code_block_re = re.compile( - r"(?:^|\s)" # $$code Must start as a new word - r"\$\$code" # $$code is the start of the block - r"(?P<args>\([^\r\n]*\))?" # optional arguments are passed in brackets - r"[^\r\n]*\r?\n" # ignore everything else on the 1st line - r"(?P<code>.*?)\s\$\$/code" # code block continues until $$/code - , re.DOTALL) - -argument_re = re.compile( - r"[ ]*" # eat spaces at the beginning - "(?P<arg>" # start of argument - ".*?" # the name of the argument - "=" # the assignment - r"""(?:(?:[^"']*?)""" # a non-quoted value - r"""|(?:"[^"]*")""" # or, a double-quoted value - r"""|(?:'[^']*')))""" # or, a single-quoted value - "[ ]*" # eat spaces at the end - "[,\r\n]" # ends in a comma or newline - ) - - -def highlight_code(code, language, formatter): - try: - lexer = pygments.lexers.get_lexer_by_name(language) - except pygments.util.ClassNotFound: - lexer = pygments.lexers.get_lexer_by_name("text") - #Highlight with pygments and surround by blank lines - #(blank lines required for markdown syntax) - highlighted = "\n\n{0}\n\n".format( - pygments.highlight(code, lexer, formatter)) - return highlighted - - -def parse_args(args): - #Make sure the args are newline terminated (req'd by regex) - opts = {} - if args is None: - return opts - args = args.lstrip("(").rstrip(")") - if args[-1] != "\n": - args = args+"\n" - for m in argument_re.finditer(args): - arg = m.group('arg').split('=') - opts[arg[0]] = arg[1] - return opts - - -def write_pygments_css(style, formatter, - location=bf.config.filters.syntax_highlight.css_dir): - path = bf.util.path_join("_site", bf.util.fs_site_path_helper(location)) - bf.util.mkdir(path) - css_file = "pygments_{0}.css".format(style) - css_path = os.path.join(path, css_file) - css_site_path = css_path.replace("_site", "") - if css_site_path in css_files_written: - return #already written, no need to overwrite it. - f = open(css_path, "w") - css_class = ".pygments_{0}".format(style) - f.write(formatter.get_style_defs(css_class)) - f.close() - css_files_written.add(css_site_path) - - -def run(src): - substitutions = {} - for m in code_block_re.finditer(src): - args = parse_args(m.group('args')) - #Make default args - if args.has_key('lang'): - lang = args['lang'] - elif args.has_key('language'): - lang = args['language'] - else: - lang = 'text' - try: - if args.has_key('linenums'): - linenums = args['linenums'] - elif args.has_key("linenos"): - linenums = args['linenos'] - if linenums.lower().strip() == "true": - linenums = True - else: - linenums = False - except: - linenums = False - try: - style = args['style'] - except KeyError: - style = bf.config.filters.syntax_highlight.style - try: - css_class = args['cssclass'] - except KeyError: - css_class = "pygments_{0}".format(style) - formatter = pygments.formatters.HtmlFormatter( - linenos=linenums, cssclass=css_class, style=style) - write_pygments_css(style, formatter) - substitutions[m.group()] = highlight_code( - m.group('code'), lang, formatter) - if len(substitutions) > 0: - p = re.compile('|'.join(map(re.escape, substitutions))) - src = p.sub(lambda x: substitutions[x.group(0)], src) - return src - else: - return src diff --git a/_templates/head.mako b/_templates/head.mako index 1e0c651..8cf9247 100644 --- a/_templates/head.mako +++ b/_templates/head.mako @@ -1,5 +1,4 @@ <title>${bf.config.blog.name}</title> <link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="${bf.util.site_path_helper(bf.config.blog.path,'/feed')}" /> <link rel="alternate" type="application/atom+xml" title="Atom 1.0" href="${bf.util.site_path_helper(bf.config.blog.path,'/feed/atom')}" /> -<link rel='stylesheet' href='${bf.config.filters.syntax_highlight.css_dir}/pygments_${bf.config.filters.syntax_highlight.style}.css' type='text/css' /> <link rel='stylesheet' href='/css/site.css' /> |