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import re
import parser
from urllib.parse import quote
class KeyWordParser(parser.Parser):
def __init__(self, pctxt):
parser.Parser.__init__(self, pctxt)
self.keywordPattern = re.compile(r'^(%s%s)(%s)' % (
'([a-z0-9\-\+_\.]*[a-z0-9\-\+_)])', # keyword
'( [a-z0-9\-_]+)*', # subkeywords
'(\([^ ]*\))?', # arg (ex: (<backend>), (<frontend>/<backend>), (<offset1>,<length>[,<offset2>]) ...
))
def parse(self, line):
pctxt = self.pctxt
keywords = pctxt.keywords
keywordsCount = pctxt.keywordsCount
chapters = pctxt.chapters
res = ""
if line != "" and not re.match(r'^ ', line):
parsed = self.keywordPattern.match(line)
if parsed != None:
keyword = parsed.group(1)
arg = parsed.group(4)
parameters = line[len(keyword) + len(arg):]
if (parameters != "" and not re.match("^ +(/?(<|\[|\{).*|(: [a-z0-9 +]+))?(\(deprecated\))?$", parameters)):
# Dirty hack
# - parameters should only start with the character "<", "[", "{", and in rare cases with an extra "/"
# - or a column (":") followed by a alpha keywords to identify fetching samples (optionally separated by the character "+")
# - or the string "(deprecated)" at the end
keyword = False
else:
splitKeyword = keyword.split(" ")
parameters = arg + parameters
else:
keyword = False
if keyword and (len(splitKeyword) <= 4):
toplevel = pctxt.details["toplevel"]
for j in range(0, len(splitKeyword)):
subKeyword = " ".join(splitKeyword[0:j + 1])
if subKeyword != "no":
if not subKeyword in keywords:
keywords[subKeyword] = set()
keywords[subKeyword].add(pctxt.details["chapter"])
res += '<a class="anchor" name="%s"></a>' % subKeyword
res += '<a class="anchor" name="%s-%s"></a>' % (toplevel, subKeyword)
res += '<a class="anchor" name="%s-%s"></a>' % (pctxt.details["chapter"], subKeyword)
res += '<a class="anchor" name="%s (%s)"></a>' % (subKeyword, chapters[toplevel]['title'])
res += '<a class="anchor" name="%s (%s)"></a>' % (subKeyword, chapters[pctxt.details["chapter"]]['title'])
deprecated = parameters.find("(deprecated)")
if deprecated != -1:
prefix = ""
suffix = ""
parameters = parameters.replace(
"(deprecated)",
'<span class="label label-warning">(deprecated)</span>'
)
else:
prefix = ""
suffix = ""
nextline = pctxt.get_line(1)
while nextline.startswith(" "):
# Found parameters on the next line
parameters += "\n" + nextline
pctxt.next()
if pctxt.has_more_lines(1):
nextline = pctxt.get_line(1)
else:
nextline = ""
parameters = self.colorize(parameters)
res += '<div class="keyword">%s<b><a class="anchor" name="%s"></a><a href="#%s">%s</a></b>%s%s</div>' % (prefix, keyword, quote("%s-%s" % (pctxt.details["chapter"], keyword)), keyword, parameters, suffix)
pctxt.next()
pctxt.stop = True
elif line.startswith("/*"):
# Skip comments in the documentation
while not pctxt.get_line().endswith("*/"):
pctxt.next()
pctxt.next()
else:
# This is probably not a keyword but a text, ignore it
res += line
else:
res += line
return res
# Used to colorize keywords parameters
# TODO : use CSS styling
def colorize(self, text):
colorized = ""
tags = [
[ "[" , "]" , "#008" ],
[ "{" , "}" , "#800" ],
[ "<", ">", "#080" ],
]
heap = []
pos = 0
while pos < len(text):
substring = text[pos:]
found = False
for tag in tags:
if substring.startswith(tag[0]):
# Opening tag
heap.append(tag)
colorized += '<span style="color: %s">%s' % (tag[2], substring[0:len(tag[0])])
pos += len(tag[0])
found = True
break
elif substring.startswith(tag[1]):
# Closing tag
# pop opening tags until the corresponding one is found
openingTag = False
while heap and openingTag != tag:
openingTag = heap.pop()
if openingTag != tag:
colorized += '</span>'
# all intermediate tags are now closed, we can display the tag
colorized += substring[0:len(tag[1])]
# and the close it if it was previously opened
if openingTag == tag:
colorized += '</span>'
pos += len(tag[1])
found = True
break
if not found:
colorized += substring[0]
pos += 1
# close all unterminated tags
while heap:
tag = heap.pop()
colorized += '</span>'
return colorized
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