def footnote_ref(state: StateInline, silent: bool):
"""Process footnote references ([^...])"""
maximum = state.posMax
start = state.pos
# should be at least 4 chars - "[^x]"
if start + 3 > maximum:
return False
if "footnotes" not in state.env or "refs" not in state.env["footnotes"]:
return False
if state.srcCharCode[start] != 0x5B: # /* [ */
return False
if state.srcCharCode[start + 1] != 0x5E: # /* ^ */
return False
pos = start + 2
while pos < maximum:
if state.srcCharCode[pos] == 0x20:
return False
if state.srcCharCode[pos] == 0x0A:
return False
if state.srcCharCode[pos] == 0x5D: # /* ] */
break
pos += 1
if pos == start + 2: # no empty footnote labels
return False
if pos >= maximum:
return False
pos += 1
label = state.src[start + 2:pos - 1]
if (":" + label) not in state.env["footnotes"]["refs"]:
return False
if not silent:
if "list" not in state.env["footnotes"]:
state.env["footnotes"]["list"] = {}
if state.env["footnotes"]["refs"][":" + label] < 0:
footnoteId = len(state.env["footnotes"]["list"])
state.env["footnotes"]["list"][footnoteId] = {
"label": label,
"count": 0
}
state.env["footnotes"]["refs"][":" + label] = footnoteId
else:
footnoteId = state.env["footnotes"]["refs"][":" + label]
footnoteSubId = state.env["footnotes"]["list"][footnoteId]["count"]
state.env["footnotes"]["list"][footnoteId]["count"] += 1
token = state.push("footnote_ref", "", 0)
token.meta = {"id": footnoteId, "subId": footnoteSubId, "label": label}
state.pos = pos
state.posMax = maximum
return True
def footnote_inline(state: StateInline, silent: bool):
"""Process inline footnotes (^[...])"""
maximum = state.posMax
start = state.pos
if start + 2 >= maximum:
return False
if state.srcCharCode[start] != 0x5E: # /* ^ */
return False
if state.srcCharCode[start + 1] != 0x5B: # /* [ */
return False
labelStart = start + 2
labelEnd = parseLinkLabel(state, start + 1)
# parser failed to find ']', so it's not a valid note
if labelEnd < 0:
return False
# We found the end of the link, and know for a fact it's a valid link
# so all that's left to do is to call tokenizer.
#
if not silent:
refs = state.env.setdefault("footnotes", {}).setdefault("list", {})
footnoteId = len(refs)
tokens = []
state.md.inline.parse(state.src[labelStart:labelEnd], state.md,
state.env, tokens)
token = state.push("footnote_ref", "", 0)
token.meta = {"id": footnoteId}
refs[footnoteId] = {
"content": state.src[labelStart:labelEnd],
"tokens": tokens
}
state.pos = labelEnd + 1
state.posMax = maximum
return True
