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LibMarkdown: Add support for images :^)

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This commit is contained in:
Sergey Bugaev 2020-04-30 00:27:23 +03:00 • committed by Andreas Kling
parent b8aab5fdc3
commit f1a8fb1e88
2 changed files with 35 additions and 3 deletions
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37
Libraries/LibMarkdown/Text.cpp
View file

@ -65,6 +65,8 @@ String Text::render_to_html() const
auto it = open_tags.find([&](const String& open_tag) {
if (open_tag == "a" && current_style.href != span.style.href)
return true;
if (open_tag == "img" && current_style.img != span.style.img)
return true;
for (auto& tag_and_flag : tags_and_flags) {
if (open_tag == tag_and_flag.tag && !(span.style.*tag_and_flag.flag))
return true;
@ -79,6 +81,11 @@ String Text::render_to_html() const
// it.
for (ssize_t j = open_tags.size() - 1; j >= static_cast<ssize_t>(it.index()); --j) {
auto& tag = open_tags[j];
if (tag == "img") {
builder.append("\" />");
current_style.img = {};
continue;
}
builder.appendf("</%s>", tag.characters());
if (tag == "a") {
current_style.href = {};
@ -94,6 +101,10 @@ String Text::render_to_html() const
open_tags.append("a");
builder.appendf("<a href=\"%s\">", span.style.href.characters());
}
if (current_style.img.is_null() && !span.style.img.is_null()) {
open_tags.append("img");
builder.appendf("<img src=\"%s\" alt=\"", span.style.img.characters());
}
for (auto& tag_and_flag : tags_and_flags) {
if (current_style.*tag_and_flag.flag != span.style.*tag_and_flag.flag) {
open_tags.append(tag_and_flag.tag);
@ -107,6 +118,10 @@ String Text::render_to_html() const
for (ssize_t i = open_tags.size() - 1; i >= 0; --i) {
auto& tag = open_tags[i];
if (tag == "img") {
builder.append("\" />");
continue;
}
builder.appendf("</%s>", tag.characters());
}
@ -147,6 +162,11 @@ String Text::render_for_terminal() const
builder.appendf(" <%s>", span.style.href.characters());
}
}
if (!span.style.img.is_null()) {
if (strstr(span.style.img.characters(), "://") != nullptr) {
builder.appendf(" <%s>", span.style.img.characters());
}
}
}
return builder.build();
@ -157,6 +177,7 @@ bool Text::parse(const StringView& str)
Style current_style;
size_t current_span_start = 0;
int first_span_in_the_current_link = -1;
bool current_link_is_actually_img = false;
auto append_span_if_needed = [&](size_t offset) {
ASSERT(current_span_start <= offset);
@ -182,7 +203,7 @@ bool Text::parse(const StringView& str)
bool is_special_character = false;
is_special_character |= ch == '`';
if (!current_style.code)
is_special_character |= ch == '*' || ch == '_' || ch == '[' || ch == ']';
is_special_character |= ch == '*' || ch == '_' || ch == '[' || ch == ']' || ch == '!';
if (!is_special_character)
continue;
@ -201,6 +222,11 @@ bool Text::parse(const StringView& str)
current_style.emph = !current_style.emph;
}
break;
case '!':
if (offset + 1 >= str.length() || str[offset + 1] != '[')
continue;
current_link_is_actually_img = true;
break;
case '[':
if (first_span_in_the_current_link != -1)
dbg() << "Dropping the outer link";
@ -213,6 +239,7 @@ bool Text::parse(const StringView& str)
}
ScopeGuard guard = [&] {
first_span_in_the_current_link = -1;
current_link_is_actually_img = false;
};
if (offset + 2 >= str.length() || str[offset + 1] != '(')
continue;
@ -226,8 +253,12 @@ bool Text::parse(const StringView& str)
offset--;
const StringView href = str.substring_view(start_of_href, offset - start_of_href);
for (size_t i = first_span_in_the_current_link; i < m_spans.size(); i++)
m_spans[i].style.href = href;
for (size_t i = first_span_in_the_current_link; i < m_spans.size(); i++) {
if (current_link_is_actually_img)
m_spans[i].style.img = href;
else
m_spans[i].style.href = href;
}
break;
}
default:

1
Libraries/LibMarkdown/Text.h
View file

@ -38,6 +38,7 @@ public:
bool strong { false };
bool code { false };
String href;
String img;
};
struct Span {