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# Generate a HTML or Markdown link from given Gemtext link.
generate::make_link () {
local -r what="$1"; shift
local -r line="${1/=> }"; shift
local link=''
local descr=''
while read -r token; do
if [ -z "$link" ]; then
link="$token"
elif [ -z "$descr" ]; then
descr="$token"
else
descr="$descr $token"
fi
done < <(echo "$line" | tr ' ' '\n')
if $GREP -E -q "$IMAGE_PATTERN" <<< "$link"; then
if [[ "$what" == md ]]; then
md::make_img "$link" "$descr"
else
html::make_img "$link" "$(html::encode "$descr")"
fi
return
fi
if [[ "$what" == md ]]; then
md::make_link "$link" "$descr"
else
html::make_link "$link" "$(html::encode "$descr")"
fi
}
# Add other docs (e.g. images, videos) from Gemtext to output format.
generate::fromgmi_add_docs () {
local -r src="$1"; shift
local -r format="$1"; shift
local -r dest=${src/gemtext/$format}
local -r dest_dir=$(dirname "$dest")
if [[ ! -d "$dest_dir" ]]; then
mkdir -p "$dest_dir"
fi
cp "$src" "$dest"
}
# Remove docs from output format which aren't present in Gemtext anymore.
generate::fromgmi_cleanup_docs () {
local -r src="$1"; shift
local -r format="$1"; shift
local dest=${src/.$format/.gmi}
dest=${dest/$format/gemtext}
if [[ ! -f "$dest" ]]; then
rm "$src"
fi
}
# Convert the Gemtext Atom feed to a HTML Atom feed.
generate::convert_gmi_atom_to_html_atom () {
local -r format="$1"; shift
if [[ "$format" != html ]]; then
return
fi
if [ ! -f "$CONTENT_BASE_DIR/gemtext/gemfeed/atom.xml" ]; then
return
fi
log INFO 'Converting Gemtext Atom feed to HTML Atom feed'
if [ ! -d "$CONTENT_BASE_DIR/html/gemfeed" ]; then
mkdir -p "$CONTENT_BASE_DIR/html/gemfeed"
fi
$SED 's|.gmi |.html |g; s|.gmi"|.html"|g; s|.gmi</id>|.html</id>|g; s|gemini://|https://|g' \
< "$CONTENT_BASE_DIR/gemtext/gemfeed/atom.xml" \
> "$CONTENT_BASE_DIR/html/gemfeed/atom.xml.tmp"
atomfeed::xmllint "$CONTENT_BASE_DIR/html/gemfeed/atom.xml.tmp" &&
mv "$CONTENT_BASE_DIR/html/gemfeed/atom.xml.tmp" "$CONTENT_BASE_DIR/html/gemfeed/atom.xml"
}
# Internal helper function for generate::fromgmi
generate::_to_output_format () {
local -r src="$1"; shift
local -r format="$1"; shift
local dest=${src/gemtext/$format}
dest=${dest/.gmi/.$format}
local dest_dir=$(dirname "$dest")
local title=$($SED -n '/^# / { s/# //; p; q; }' "$src" | tr '"' "'")
if [[ -z "$title" ]]; then
title="$SUBTITLE"
fi
if [[ ! -d "$dest_dir" ]]; then
mkdir -p "$dest_dir"
fi
if [[ "$format" == html ]]; then
cat "$HTML_HEADER" > "$dest.tmp"
html::fromgmi < "$src" >> "$dest.tmp"
cat "$HTML_FOOTER" >> "$dest.tmp"
# For HTML, we can override the style sheet per directory.
local stylesheet="$(basename "$HTML_CSS_STYLE")"
local stylesheet_override="${stylesheet/.css/-override.css}"
if [[ "$CONTENT_BASE_DIR/html" != "$(dirname "$dest")" ]]; then
stylesheet="../$stylesheet"
fi
$SED -i "s|%%TITLE%%|$title|g;
s|%%DOMAIN%%|$DOMAIN|g;
s|%%STYLESHEET%%|$stylesheet|g;
s|%%STYLESHEET_OVERRIDE%%|$stylesheet_override|g;" "$dest.tmp"
elif [[ "$format" == md ]]; then
md::fromgmi < "$src" >> "$dest.tmp"
else
log ERROR "Unknown output format '$format'"
exit 2
fi
mv "$dest.tmp" "$dest"
}
# Generate a given output format from a Gemtext file.
generate::fromgmi () {
local -i num_gmi_files=0
local -i num_doc_files=0
log INFO "Generating $* from Gemtext"
# Add atom feed for HTML
generate::convert_gmi_atom_to_html_atom 'html'
# Add content
while read -r src; do
if test -n "$CONTENT_FILTER" && ! $GREP -q "$CONTENT_FILTER" <<< "$src"; then
continue
fi
num_gmi_files=$(( num_gmi_files + 1 ))
log INFO "Generating output formats from $src"
for format in "$@"; do
generate::_to_output_format "$src" "$format" &
done
done < <(find "$CONTENT_BASE_DIR/gemtext" -type f -name \*.gmi)
wait
log INFO "Converted $num_gmi_files Gemtext files"
# Add non-.gmi files to html dir.
log VERBOSE "Adding other docs to $*"
while read -r src; do
num_doc_files=$(( num_doc_files + 1 ))
for format in "$@"; do
generate::fromgmi_add_docs "$src" "$format" &
done
done < <(find "$CONTENT_BASE_DIR/gemtext" -type f | $GREP -E -v '(\.git.*|\.gmi|\.gmi\.tpl|atom.xml|\.tmp)$')
wait
log INFO "Added $num_doc_files other documents to each of $*"
# Remove obsolete files from ./html/.
# Note: The _config.yml is the config file for GitHub pages (md format).
# Anoter note: The CNAME file is required by GitHub pages as well for custom domains.
for format in "$@"; do
find "$CONTENT_BASE_DIR/$format" -type f |
$GREP -E -v '(\.git.*|_config.yml|CNAME|.domains|robots.txt|static)$'|
while read -r src; do
generate::fromgmi_cleanup_docs "$src" "$format"
done &
done
wait
# Add extra content
for format in "$@"; do
if [[ "$format" == html ]]; then
log INFO "Adding HTML extras"
html::add_extras &
fi
done
wait
for format in "$@"; do
log INFO "$format can be found in $CONTENT_BASE_DIR/$format now"
done
log INFO "You may want to commit all changes to version control!"
}
# Only generate draft posts
generate::draft () {
if [[ -n "$CONTENT_FILTER" && "$CONTENT_FILTER" != DRAFT- ]]; then
log ERROR "ERROR, you can't set a content filter manually in draft mode"
exit 2
fi
CONTENT_FILTER=DRAFT-
generate::fromgmi "$@"
log INFO 'For HTML preview, open in your browser:'
find "$CONTENT_BASE_DIR/html" -name DRAFT-\*.html
}
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