blob: 3a8d6fc3f89f6d13d4529a067c7bd3bf10aaa9df [file] [log] [blame]
# Process ![image](<src> "title")
from .state_inline import StateInline
from ..common.utils import isSpace, normalizeReference
from ..common.normalize_url import normalizeLink, validateLink
def image(state: StateInline, silent: bool):
tokens = None
label = None
href = ""
oldPos = state.pos
max = state.posMax
# /* ! */
if state.srcCharCode[state.pos] != 0x21:
return False
# /* [ */
if state.pos + 1 < state.posMax and state.srcCharCode[state.pos + 1] != 0x5B:
return False
labelStart = state.pos + 2
labelEnd = state.md.helpers.parseLinkLabel(state, state.pos + 1, False)
# parser failed to find ']', so it's not a valid link
if labelEnd < 0:
return False
pos = labelEnd + 1
# /* ( */
if pos < max and state.srcCharCode[pos] == 0x28:
#
# Inline link
#
# [link]( <href> "title" )
# ^^ skipping these spaces
pos += 1
while pos < max:
code = state.srcCharCode[pos]
if not isSpace(code) and code != 0x0A:
break
pos += 1
if pos >= max:
return False
# [link]( <href> "title" )
# ^^^^^^ parsing link destination
start = pos
res = state.md.helpers.parseLinkDestination(state.src, pos, state.posMax)
if res.ok:
href = normalizeLink(res.str)
if validateLink(href):
pos = res.pos
else:
href = ""
# [link]( <href> "title" )
# ^^ skipping these spaces
start = pos
while pos < max:
code = state.srcCharCode[pos]
if not isSpace(code) and code != 0x0A:
break
pos += 1
# [link]( <href> "title" )
# ^^^^^^^ parsing link title
res = state.md.helpers.parseLinkTitle(state.src, pos, state.posMax)
if pos < max and start != pos and res.ok:
title = res.str
pos = res.pos
# [link]( <href> "title" )
# ^^ skipping these spaces
while pos < max:
code = state.srcCharCode[pos]
if not isSpace(code) and code != 0x0A:
break
pos += 1
else:
title = ""
# /* ) */
if pos >= max or state.srcCharCode[pos] != 0x29:
state.pos = oldPos
return False
pos += 1
else:
#
# Link reference
#
if "references" not in state.env:
return False
# /* [ */
if pos < max and state.srcCharCode[pos] == 0x5B:
start = pos + 1
pos = state.md.helpers.parseLinkLabel(state, pos)
if pos >= 0:
label = state.src[start:pos]
pos += 1
else:
pos = labelEnd + 1
else:
pos = labelEnd + 1
# covers label == '' and label == undefined
# (collapsed reference link and shortcut reference link respectively)
if not label:
label = state.src[labelStart:labelEnd]
label = normalizeReference(label)
ref = state.env.references.get(label, None)
if not ref:
state.pos = oldPos
return False
href = ref.href
title = ref.title
#
# 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:
content = state.src[labelStart:labelEnd]
tokens = []
state.md.inline.parse(content, state.md, state.env, tokens)
token = state.push("image", "img", 0)
token.attrs = [["src", href], ["alt", ""]]
token.children = tokens or None
if title:
token.attrs.append(["title", title])
# note, this is not part of markdown-it JS, but is useful for renderers
if label and state.md.options.get("store_labels", False):
token.meta["label"] = label
state.pos = pos
state.posMax = max
return True