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# Convert special characters to their HTML codes
html::encode () {
$SED '
s|\&|\&|g;
s|<|\<|g;
s|>|\>|g;
' <<< "$@"
}
# Make a HTML paragraph.
html::make_paragraph () {
local -r text="$1"; shift
if [[ -n "$text" ]]; then
echo "<p>$(html::encode "$text")</p>"
fi
}
# Make a HTML header.
html::make_heading () {
local -r text=$($SED -E 's/^#+ //' <<< "$1"); shift
local -r level="$1"; shift
echo "<h${level}>$(html::encode "$text")</h${level}>"
}
# Make a HTML quotation
html::make_quote () {
local -r quote="${1/> }"
echo "<p class=\"quote\"><i>$(html::encode "$quote")</i></p>"
}
# Make a HTML image
html::make_img () {
local link="$1"; shift
local descr="$1"; shift
if [ -z "$descr" ]; then
echo -n "<a href=\"$link\"><img src=\"$link\" /></a>"
else
echo -n "<a href=\"$link\"><img alt=\"$descr\" title=\"$descr\" src=\"$link\" /></a>"
fi
echo "<br />"
}
# Make a HTML hyperlink
html::make_link () {
local link="$1"; shift
local descr="$1"; shift
if ! $GREP -F -q '://' <<< "$link"; then
link=${link/.gmi/.html}
fi
if [[ -z "$descr" ]]; then
descr="$link"
fi
echo "<a class=\"textlink\" href=\"$link\">$descr</a><br />"
}
# Make inline code!
html::process_inline_code () {
$SED -E 's|`([^`]+)`|<span class="inlinecode">\1</span>|g'
}
html::process_inline () {
# As of now we only inlinde "code blocks", but we can chain more here later!
html::process_inline_code
}
html::add_extras () {
local -r html_base_dir="$CONTENT_BASE_DIR/html"
cp "$HTML_CSS_STYLE" "$html_base_dir/style.css"
while read -r section_dir; do
local override_source="./extras/html/style-$(basename "$section_dir")-override.css"
local override_dest="$section_dir/style-override.css"
if [ ! -f "$override_source" ]; then
touch "$override_dest" # Empty override
else
cp "$override_source" "$override_dest"
fi
done < <(find "$html_base_dir" -mindepth 1 -maxdepth 1 -type d | $GREP -E -v '(\.git)')
cp "$HTML_WEBFONT_TEXT" "$html_base_dir/text.ttf"
cp "$HTML_WEBFONT_CODE" "$html_base_dir/code.ttf"
cp "$HTML_WEBFONT_HANDNOTES" "$html_base_dir/handnotes.ttf"
cp "$HTML_WEBFONT_TYPEWRITER" "$html_base_dir/typewriter.ttf"
}
# Convert Gemtext to HTML
html::fromgmi () {
local is_list=no
local is_plain=no
while IFS='' read -r line; do
if [[ "$is_list" == yes ]]; then
if [[ "$line" == '* '* ]]; then
echo "<li>$(html::encode "${line/\* /}")</li>" |
html::process_inline
else
is_list=no
echo "</ul>"
fi
continue
elif [[ "$is_plain" == yes ]]; then
if [[ "$line" == '```'* ]]; then
echo "</pre>"
is_plain=no
else
html::encode "$line"
fi
continue
fi
case "$line" in
'* '*)
is_list=yes
echo "<ul>"
echo "<li>$(html::encode "${line/\* /}")</li>" |
html::process_inline
;;
'```'*)
is_plain=yes
echo '<pre>'
;;
'# '*)
html::make_heading "$line" 1 | html::process_inline
;;
'## '*)
html::make_heading "$line" 2 | html::process_inline
;;
'### '*)
html::make_heading "$line" 3 | html::process_inline
;;
'> '*)
html::make_quote "$line" | html::process_inline
;;
'=> '*)
generate::make_link html "$line" | html::process_inline
;;
*)
if [[ "$is_plain" == no ]]; then
html::make_paragraph "$line" | html::process_inline
else
html::make_paragraph "$line"
fi
;;
esac
done
}
# Test HTML package.
html::test () {
local line='Hello world! This is a paragraph.'
assert::equals "$(html::make_paragraph "$line")" '<p>Hello world! This is a paragraph.</p>'
line=''
assert::equals "$(html::make_paragraph "$line")" ''
line='Foo &<>& Bar!'
assert::equals "$(html::make_paragraph "$line")" '<p>Foo &<>& Bar!</p>'
line='echo foo 2>&1'
assert::equals "$(html::make_paragraph "$line")" '<p>echo foo 2>&1</p>'
line='# Header 1'
assert::equals "$(html::make_heading "$line" 1)" '<h1>Header 1</h1>'
line='## Header 2'
assert::equals "$(html::make_heading "$line" 2)" '<h2>Header 2</h2>'
line='### Header 3'
assert::equals "$(html::make_heading "$line" 3)" '<h3>Header 3</h3>'
line='> This is a quote'
assert::equals "$(html::make_quote "$line")" '<p class="quote"><i>This is a quote</i></p>'
line='Testing: `hello_world.sh --debug` :-) `another one`!'
assert::equals "$(echo "$line" | html::process_inline_code)" \
'Testing: <span class="inlinecode">hello_world.sh --debug</span> :-) <span class="inlinecode">another one</span>!'
line='=> https://example.org'
assert::equals "$(generate::make_link html "$line")" \
'<a class="textlink" href="https://example.org">https://example.org</a><br />'
line='=> index.html'
assert::equals "$(generate::make_link html "$line")" \
'<a class="textlink" href="index.html">index.html</a><br />'
line='=> http://example.org Description of the link'
assert::equals "$(generate::make_link html "$line")" \
'<a class="textlink" href="http://example.org">Description of the link</a><br />'
line='=> http://example.org/image.png'
assert::equals "$(generate::make_link html "$line")" \
'<a href="http://example.org/image.png"><img src="http://example.org/image.png" /></a><br />'
line='=> http://example.org/image.png Image description'
assert::equals "$(generate::make_link html "$line")" \
'<a href="http://example.org/image.png"><img alt="Image description" title="Image description" src="http://example.org/image.png" /></a><br />'
}
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