codekingpro/portable-devtools

1# Process [link](<to> "stuff")2 3from ..common.utils import isStrSpace, normalizeReference4from .state_inline import StateInline5 6 7def link(state: StateInline, silent: bool) -> bool:8    href = ""9    title = ""10    label = None11    oldPos = state.pos12    maximum = state.posMax13    start = state.pos14    parseReference = True15 16    if state.src[state.pos] != "[":17        return False18 19    labelStart = state.pos + 120    labelEnd = state.md.helpers.parseLinkLabel(state, state.pos, True)21 22    # parser failed to find ']', so it's not a valid link23    if labelEnd < 0:24        return False25 26    pos = labelEnd + 127 28    if pos < maximum and state.src[pos] == "(":29        #30        # Inline link31        #32 33        # might have found a valid shortcut link, disable reference parsing34        parseReference = False35 36        # [link](  <href>  "title"  )37        #        ^^ skipping these spaces38        pos += 139        while pos < maximum:40            ch = state.src[pos]41            if not isStrSpace(ch) and ch != "\n":42                break43            pos += 144 45        if pos >= maximum:46            return False47 48        # [link](  <href>  "title"  )49        #          ^^^^^^ parsing link destination50        start = pos51        res = state.md.helpers.parseLinkDestination(state.src, pos, state.posMax)52        if res.ok:53            href = state.md.normalizeLink(res.str)54            if state.md.validateLink(href):55                pos = res.pos56            else:57                href = ""58 59            # [link](  <href>  "title"  )60            #                ^^ skipping these spaces61            start = pos62            while pos < maximum:63                ch = state.src[pos]64                if not isStrSpace(ch) and ch != "\n":65                    break66                pos += 167 68            # [link](  <href>  "title"  )69            #                  ^^^^^^^ parsing link title70            res = state.md.helpers.parseLinkTitle(state.src, pos, state.posMax)71            if pos < maximum and start != pos and res.ok:72                title = res.str73                pos = res.pos74 75                # [link](  <href>  "title"  )76                #                         ^^ skipping these spaces77                while pos < maximum:78                    ch = state.src[pos]79                    if not isStrSpace(ch) and ch != "\n":80                        break81                    pos += 182 83        if pos >= maximum or state.src[pos] != ")":84            # parsing a valid shortcut link failed, fallback to reference85            parseReference = True86 87        pos += 188 89    if parseReference:90        #91        # Link reference92        #93        if "references" not in state.env:94            return False95 96        if pos < maximum and state.src[pos] == "[":97            start = pos + 198            pos = state.md.helpers.parseLinkLabel(state, pos)99            if pos >= 0:100                label = state.src[start:pos]101                pos += 1102            else:103                pos = labelEnd + 1104 105        else:106            pos = labelEnd + 1107 108        # covers label == '' and label == undefined109        # (collapsed reference link and shortcut reference link respectively)110        if not label:111            label = state.src[labelStart:labelEnd]112 113        label = normalizeReference(label)114 115        ref = state.env["references"].get(label, None)116        if not ref:117            state.pos = oldPos118            return False119 120        href = ref["href"]121        title = ref["title"]122 123    #124    # We found the end of the link, and know for a fact it's a valid link125    # so all that's left to do is to call tokenizer.126    #127    if not silent:128        state.pos = labelStart129        state.posMax = labelEnd130 131        token = state.push("link_open", "a", 1)132        token.attrs = {"href": href}133 134        if title:135            token.attrSet("title", title)136 137        # note, this is not part of markdown-it JS, but is useful for renderers138        if label and state.md.options.get("store_labels", False):139            token.meta["label"] = label140 141        state.linkLevel += 1142        state.md.inline.tokenize(state)143        state.linkLevel -= 1144 145        token = state.push("link_close", "a", -1)146 147    state.pos = pos148    state.posMax = maximum149    return True150