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LibMarkdown: Handle CRLF line endings

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Previously, MDDocument only split on Unix-style line endings. This adds
a new function to StringView which handles LF, CR and CRLF.
This commit is contained in:
Tommy Nguyen 2019-12-02 07:42:33 -05:00 • committed by Andreas Kling
parent 035c4e15f4
commit 2eb5793d55
4 changed files with 68 additions and 1 deletions
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40
AK/StringView.cpp
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@ -40,6 +40,46 @@ Vector<StringView> StringView::split_view(const char separator, bool keep_empty)
return v;
}
Vector<StringView> StringView::lines(bool consider_cr) const
{
if (is_empty())
return {};
if (!consider_cr)
return split_view('\n', true);
Vector<StringView> v;
ssize_t substart = 0;
bool last_ch_was_cr = false;
bool split_view = false;
for (ssize_t i = 0; i < length(); ++i) {
char ch = characters_without_null_termination()[i];
if (ch == '\n') {
split_view = true;
if (last_ch_was_cr) {
substart = i + 1;
split_view = false;
last_ch_was_cr = false;
}
}
if (ch == '\r') {
split_view = true;
last_ch_was_cr = true;
}
if (split_view) {
ssize_t sublen = i - substart;
if (sublen != 0)
v.append(substring_view(substart, sublen));
substart = i + 1;
}
split_view = false;
}
ssize_t taillen = length() - substart;
if (taillen != 0)
v.append(substring_view(substart, taillen));
return v;
}
bool StringView::starts_with(const StringView& str) const
{
if (str.is_empty())