X-Git-Url: https://git.armaanb.net/?p=charsel.git;a=blobdiff_plain;f=charsel;h=d9dcb0f9b2a298c6e123f13bce0d8eba530c4c88;hp=17b3266bc8d3961f810ec8d95490a881bde1e2f2;hb=HEAD;hpb=cd756876f0f5cb07e3d11a379833b2e59e449802

diff --git a/charsel b/charsel
index 17b3266..d9dcb0f 100755
--- a/charsel
+++ b/charsel
@@ -1,56 +1,203 @@
 #!/usr/bin/env bash
+# Charsel - terminal character selector
+# Copyright Armaan Bhojwani 2020, MIT License
 
-# Merge both global and local charfiles
-CHARDIR=~/.cache/charsel
+# Define argument functions
+function usage() {
+  echo "Usage: /usr/bin/charsel [OPTION]... [CHARFILE]...
 
-if [[ ! -d $CHARDIR ]]
-then
-  mkdir $CHARDIR/
-elif [[! "$(ls -A $CHARDIR)"]]
-then
-  cp -rf /usr/share/charsel/* $CHARDIR/
-  cp -rf ~/.local/share/charsel/* $CHARDIR/
-fi
+A simple terminal character selector
+  -a         include hidden shortcodes
+  -b         disable color support
+  -c         check charfile validity
+  -d         show readme
+  -h         show this message
+  -L         show installed charfiles without the message
+  -l         show installed charfiles
+  -n         dont copy character to clipboard, avoids Xclip dependency
+
+Exit status:
+   0         okay,
+   1         charfile does not exist,
+   2         charfile syntax error,
+   3         usage error/invalid option,
+   4         other error"
+}
 
-# Check for user inputs
-if [ $1 = "list" ]
-then
-  echo "The following charfiles are installed"
-  ls $CHARDIR/charfiles
-  exit
-elif [[ $1 = "help" || $1 = "-h" || $1 = "--help" || $# -ne 1 ]]
-then
+CHARDIR=$HOME/.cache/charsel
+function list() {
+  ls "$CHARDIR"/charfiles
+}
+
+function readme() {
   cat /usr/share/doc/charsel/README.md
-  exit
+}
+
+function missing_charfile() {
+  echo "The selected charfile is missing or invalid"
+  list
+  exit 1
+}
+
+# Merge global and local charfiles
+if [[ -d $CHARDIR ]]; then
+  rm -rf "${CHARDIR:?}"/*
 else
+  mkdir "$CHARDIR"
+fi
+
+LOCALCHARDIR=$HOME/.local/share/charsel/charfiles
+[[ -d $LOCALCHARDIR ]] || mkdir -p "$LOCALCHARDIR"
+
+localdirfiles="$LOCALCHARDIR"/*
+[[ -n "${#localdirfiles[*]}" ]] && cp -rf "$LOCALCHARDIR"/../* "$CHARDIR"
+
+globaldirfiles=($/usr/share/charfiles/)
+[[ -n "${#globaldirfiles[*]}" ]] && cp -rf /usr/share/charsel/* "$CHARDIR"
+
+# Check if charfile exists
+CHARFILE="$CHARDIR/charfiles/$2"
+function existence() {
+  if [[ ! -f $CHARFILE ]]; then
+    missing_charfile
+  fi
+}
+
+# VERY basic syntax check
+function validity() {
+  if [[ $(grep , "$CHARFILE" && grep - "$CHARFILE") ]]; then
+    echo "valid charfile"
+  else
+    existence
+    echo "invalid charfile"
+    exit 2
+  fi
+}
+
+# Look for arguments
+while getopts ":abcdhlLnvV" arg
+do
+  case ${arg} in
+    a)
+      SHOWALL="true"
+      ;;
+    b)
+      COLOR="bw"
+      ;;
+    c)
+      validity
+      exit 0
+      ;;
+    d)
+      readme
+      exit 0
+      ;;
+    h)
+      usage
+      exit 0
+      ;;
+    l)
+      echo "The following charfiles are installed:"
+      list
+      exit 0
+      ;;
+    L)
+      list
+      exit 0
+      ;;
+    n)
+      COPY="no"
+      ;;
+    ?)
+      echo "Invalid option"
+      usage
+      exit 3
+      ;;
+  esac
+done
+shift $((OPTIND-1))
+
+if [ $# -eq 0 ]; then
+  echo "Please enter a valid charfile, or use charsel -h for help."
+  charsel -l
+  exit 3
+fi
+
+# Redefine charfile and check file validity
+CHARFILE="$CHARDIR/charfiles/$1"
+existence
+validity
+
+# Dependency check
+if [[ $COPY == "no" ]]; then
+  if [[ ! -x /usr/bin/xclip ]]; then
+    echo "Please install xclip."
+    exit 4
+  fi
+fi
+
+# Define length of shortcode
+LENGTH=$(cut "$CHARFILE" -f 1 -d ',' -s \
+  | wc -L \
+  | cut -b 1)
 
-# Clear screen
 clear
 
-# Define charfile path
-CHARFILE=$CHARDIR/charfiles/$1
+# Define text formatting
+bold=$(tput bold)
+normal=$(tput sgr0)
+
+highlight=$(tput setaf 5)
+[[ $COLOR == bw ]] && highlight=$(tput setaf 7)
 
-# Define length of shortcut
-LENGTH=$(cat $CHARFILE | cut -f 1 -d ',' -s | wc -L | cut -b 1)
+white=$(tput setaf 7)
 
 # Main program
-while :
+while true
 do
-  # Put charfile into table, showing only the shortcuts below the divider in the charfile
-  cat $CHARFILE | grep -A 100 - | tail -n +2 | column -t  --output-separator ' | ' --separator ','
+  # Format output
+  echo "*---------*---------------*"
+  echo "| ${bold}${highlight}CHARSEL${white}${normal} |" "$1"
+  echo "*---------*---------------*"
+  echo ""
 
-  # Automatically enter input
-  read -N $LENGTH INPUT
- 
-  # This can definately be simplifed, but it works fine
-  LINENUMBER=$(cut -f 1 -d ',' -s $CHARFILE | grep -n $INPUT | cut -d : -f 1)
-  OUTPUT=$(cut -f 2 -d ',' -s $CHARFILE | head -$LINENUMBER | tail +$LINENUMBER)
+  if [[ $SHOWALL == true ]]; then
+    sed "$CHARFILE" -e '/^[ \t]*#/d' | tail -n +2 \
+      | column -t -N "input","output" --output-separator ' | ' --separator ','
+  else
+    sed "$CHARFILE" -e '/^[ \t]*#/d' | grep -A 100 - | tail -n +2 \
+      | column -t -N "input","output" --output-separator ' | ' --separator ','
+  fi
 
-  # Clear screen
-  clear
+  echo ""
+  echo "*-------------------------*"
+  echo "| previous shorcode:" "$(echo $INPUT)"
+  echo "| previous output:  " "$OUTPUT"
+  echo "*-------------------------*"
 
-  # Copy output to clipboard
-  echo $OUTPUT | xclip -selection clipboard
-done
+  # User input
+  read -r -p "| ${bold}input shortcode: ${normal}  " -N "$LENGTH" INPUT
 
-fi
+  if [[ $INPUT == ";"* ]]; then # Semicolon exts
+    clear
+    exit 0
+  else
+    # Finds line number of shortcode
+    LINENUMBER=$(cut -f 1 -d ',' -s "$CHARFILE" | grep -wn "$INPUT" | cut -d : -f 1)
+
+    # Outputs character selected above
+    OUTPUT=$(cut -f 2 -d ',' -s "$CHARFILE" | head -"$LINENUMBER" | tail +"$LINENUMBER")
+
+    # Check to see if the shortcode actually exists
+    if [[ $(cut -f 1 -d ',' -s "$CHARFILE" | grep -wnc "$INPUT") == "0" ]]; then
+      OUTPUT=""
+    fi
+
+    # Copy output to clipboard
+    if [[ ! $COPY == "no" ]]; then
+      echo -n "$OUTPUT" | xclip -selection clipboard
+    fi
+
+    clear
+  fi
+done