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#!/usr/bin/sh
NAME="$0"
CSS_LINK="https://raw.githubusercontent.com/sindresorhus/github-markdown-css/gh-pages/github-markdown.css"
INPUT="/dev/stdin"
CUSTOM_INPUT=0
OUTPUT="/dev/stdout"
CUSTOM_OUTPUT=0
COMPILER="marked --gfm"
YES=0 #Set to 1 for --yes flag
print_help() {
echo "Usage: $NAME [OPTION]... [INPUT]"
echo "Compile INPUT markdown file to github-styled html"
echo ""
echo " --compiler [COMPILER] set the markdown compiler to use. Default is marked --gfm"
echo " -h, --help print this help message"
echo " -i, --input [INPUT] specify INPUT file"
echo " -o, --output [OUTPUT] output to specified OUTPUT file"
echo " -y, --yes automatic yes to prompts"
}
# Parse arguments
while [ $# -gt 0 ]; do
case $1 in
--compiler)
COMPILER="$2"
shift 2
;;
-h | --help)
print_help
exit 1
;;
-i | --input)
INPUT="$2"
CUSTOM_INPUT=1
shift 2
;;
-o | --output)
OUTPUT="$2"
CUSTOM_OUTPUT=1
shift 2
;;
-y | --yes)
PROMPT="y"
YES=1
shift
;;
*)
INPUT="$1"
CUSTOM_INPUT=1
shift
;;
esac
done
# Check if overwrite
if [ $CUSTOM_OUTPUT -eq 1 ] && [ -e "$OUTPUT" ]; then
if [ $YES -eq 0 ]; then
echo -n "File $OUTPUT already exists. Overwrite it? [y/N] "
read -r PROMPT
fi
if [ "$PROMPT" = "y" ]; then
echo -n "" > "$OUTPUT"
else
exit 1
fi
fi
# Prompt to download CSS file if not in CWD or same directory as NAME
if [ ! -e "github-markdown.css" ] || [ ! -e "$(dirname "$NAME")/github-markdown.css" ]; then
if [ $YES -eq 0 ]; then
echo -n "Download github-markdown.css to current working directory? [Y/n] "
read -r PROMPT
fi
if [ ! "$PROMPT" = "n" ]; then
wget "$CSS_LINK"
fi
fi
# Add meta, link, and style lines to OUTPUT
echo "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">" >> "$OUTPUT"
echo "<link rel=\"stylesheet\" href=\"github-markdown.css\">" >> "$OUTPUT"
echo "<style>" >> "$OUTPUT"
echo " .markdown-body {" >> "$OUTPUT"
echo " box-sizing: border-box;" >> "$OUTPUT"
echo " min-width: 200px;" >> "$OUTPUT"
echo " max-width: 980px;" >> "$OUTPUT"
echo " margin: 0 auto;" >> "$OUTPUT"
echo " padding: 45px;" >> "$OUTPUT"
echo " }" >> "$OUTPUT"
echo "" >> "$OUTPUT"
echo " @media (max-width: 767px) {" >> "$OUTPUT"
echo " .markdown-body {" >> "$OUTPUT"
echo " padding: 15px;" >> "$OUTPUT"
echo " }" >> "$OUTPUT"
echo " }" >> "$OUTPUT"
echo "</style>" >> "$OUTPUT"
echo "<article class=\"markdown-body\">" >> "$OUTPUT"
# Add body (from markdown) using compiler (default is marked --gfm)
# TODO work on getting syntax highlighting support
$COMPILER "$INPUT" >> "$OUTPUT"
# Close output
echo "</article>" >> "$OUTPUT"
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