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"""Helps you output colourised code snippets in ReportLab documents.
Platypus has an 'XPreformatted' flowable for handling preformatted
text, with variations in fonts and colors. If Pygments is installed,
calling 'pygments2xpre' will return content suitable for display in
an XPreformatted object. If it's not installed, you won't get colours.
For a list of available lexers see http://pygments.org/docs/
"""
__all__ = ('pygments2xpre',)
import re
from io import StringIO
def _2xpre(s,styles):
"Helper to transform Pygments HTML output to ReportLab markup"
s = s.replace('<div class="highlight">','')
s = s.replace('</div>','')
s = s.replace('<pre>','')
s = s.replace('</pre>','')
for k,c in styles+[('p','#000000'),('n','#000000'),('err','#000000')]:
s = s.replace('<span class="%s">' % k,'<span color="%s">' % c)
s = re.sub(r'<span class="%s\s+.*">'% k,'<span color="%s">' % c,s)
s = re.sub(r'<span class=".*">','<span color="#0f0f0f">',s)
return s
def pygments2xpre(s, language="python"):
"Return markup suitable for XPreformatted"
try:
from pygments import highlight
from pygments.formatters import HtmlFormatter
except ImportError:
return s
from pygments.lexers import get_lexer_by_name
rconv = lambda x: x
out = StringIO()
l = get_lexer_by_name(language)
h = HtmlFormatter()
highlight(s,l,h,out)
styles = [(cls, style.split(';')[0].split(':')[1].strip())
for cls, (style, ttype, level) in h.class2style.items()
if cls and style and style.startswith('color:')]
return rconv(_2xpre(out.getvalue(),styles))
def convertSourceFiles(filenames):
"Helper function - makes minimal PDF document"
from reportlab.platypus import Paragraph, SimpleDocTemplate, XPreformatted
from reportlab.lib.styles import getSampleStyleSheet
styT=getSampleStyleSheet()["Title"]
styC=getSampleStyleSheet()["Code"]
doc = SimpleDocTemplate("pygments2xpre.pdf")
S = [].append
for filename in filenames:
S(Paragraph(filename,style=styT))
src = open(filename, 'r').read()
fmt = pygments2xpre(src)
S(XPreformatted(fmt, style=styC))
doc.build(S.__self__)
print('saved pygments2xpre.pdf')
if __name__=='__main__':
import sys
filenames = sys.argv[1:]
if not filenames:
print('usage: pygments2xpre.py file1.py [file2.py] [...]')
sys.exit(0)
convertSourceFiles(filenames)