1 files changed, 85 insertions, 0 deletions
diff --git a/rfc.sh b/rfc.sh
new file mode 100755
index 0000000..461b62b
--- /dev/null
+++ b/rfc.sh
@@ -0,0 +1,85 @@
+#!/usr/bin/bash
+
+# TEXTVIEW="nvim -R"
+TEXTVIEW="less"
+PDFVIEW="zathura"
+
+# arch package rfc(any)
+RFC_DIR=/usr/share/doc/rfc
+RFC_INDEX=$RFC_DIR/rfc-index.txt
+
+print_help(){
+    echo "usage:"
+    echo "    rfc [option] <rfc-number>"
+    echo "options:"
+    echo "    --pdf open rfc in pdf viewer"
+    echo "    -q    quick query, show only the summary"
+}
+
+print_summary(){
+    # if sed takes no filename, it will read stdin
+    # but we should let it fail...
+    if test -z "$RFC_INDEX" 
+    then
+        echo "BAD RFC_INDEX"
+        exit 1
+    fi
+    sed -n "/^$1/,/^$/p" $RFC_INDEX
+}
+
+open_pdf(){
+    PDF=$RFC_DIR/pdf/rfc$1.pdf
+    if [ ! -f "$PDF" ]; then
+        echo "$PDF not available."
+        exit 1;
+    fi
+    $PDFVIEW $PDF
+}
+
+
+open_txt(){
+    TXT=$RFC_DIR/txt/rfc$1.txt
+    if [ ! -f "$TXT" ]; then
+        echo "$TXT not available."
+        exit 1;
+    fi
+    $TEXTVIEW $TXT
+}
+
+
+re='^[0-9]+$'
+# parse argumentsa
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -q)
+      if ! [[ $2 =~ $re ]] ; then
+        echo "invalid input" >&2; print_help; exit 1
+      fi
+      print_summary $2
+      exit
+      ;;
+    --pdf)
+      if ! [[ $2 =~ $re ]] ; then
+        echo "invalid input" >&2; print_help; exit 1
+      fi
+      open_pdf $2
+      exit
+      ;;
+    -*|--*)
+      print_help
+      exit 1
+      ;;
+    *)
+      if ! [[ $1 =~ $re ]] ; then
+        echo "invalid input $2" >&2; print_help; exit 1
+      fi
+      open_txt $1
+      exit
+      ;;
+  esac
+done
+
+if [ ! $# -eq 1 ]; then
+    print_help
+    exit 1
+fi