Added dotstow to repo

dotstow.sh

@@ -0,0 +1,153 @@
+#!/bin/bash
+
+stow() {
+    local stowrepo=$1
+    local stowtarget=$2
+   
+    [ "$VERBOSE" -gt 1 ] && echo "Entering $stowrepo..."
+
+    local files=()
+    while read line; do
+        if [ "$line" != "." -a "$line" != ".." ]; then
+            files+=("$line")
+        fi
+    done < <(ls -a $stowrepo)
+    
+    [ "$VERBOSE" -gt 1 ] && echo "Filelist: ${files[@]}"
+
+    for file in "${files[@]}"; do
+        local file=$(basename "$file")
+        local ctarget="$stowtarget/$file"
+        local csource="$stowrepo/$file"
+        if [ -e "$ctarget" ]; then
+            if [ -L "$ctarget" -a "$(readlink -f "$ctarget")" == "$(realpath "$csource")" ]; then # Link already exists. Skip
+                [ $VERBOSE -gt 0 ] && echo "Skipping $ctarget..."
+            elif [ -d "$ctarget" -a -d "$csource" ]; then # Dictionary exists. Enter
+                stow "$csource" "$ctarget"
+            else # No can do.
+                echo "Aborting. $ctarget exists, but is not owned by dotstow"; exit 1
+            fi
+        else
+            if [ "$SIMULATE" -gt 0 ] || ln -s "$(realpath "$csource")" "$ctarget"; then
+                [ $VERBOSE -gt 0 ] && echo "Linking $ctarget to $csource"
+            else
+                echo "Could not link $ctarget to $csource"; exit 1
+            fi
+        fi
+    done
+
+    [ "$VERBOSE" -gt 1 ] && echo "Leaving $stowrepo..."
+}
+
+destow() {
+    local stowrepo=$1
+    local stowtarget=$2
+
+    [ "$VERBOSE" -gt 1 ] && echo "Entering $stowrepo..."
+
+    local files=()
+    while read line; do
+        if [ "$line" != "." -a "$line" != ".." ]; then
+            files+=("$line")
+        fi
+    done < <(ls -a $stowrepo)
+
+    [ "$VERBOSE" -gt 1 ] && echo "Filelist: ${files[@]}"
+
+    for file in "${files[@]}"; do
+        local file=$(basename "$file")
+        local ctarget="$stowtarget/$file"
+        local csource="$stowrepo/$file"
+
+        if [ ! -e "$ctarget" ]; then # Target doesn't exists. skip
+            [ $VERBOSE -gt 0 ] && echo "$ctarget does not exist. Skipping..."
+        elif [ ! -L "$ctarget" ]; then
+            if [ -d "$ctarget" -a -d "$csource" ]; then
+                destow "$csource" "$ctarget"
+            else
+                echo "$ctarget exists, but is not owned by dotstow (Not a link)"; exit 1
+            fi
+        elif [ "$(readlink -f "$ctarget")" != "$(realpath "$csource")" ]; then
+            [ "$VERBOSE" -gt 0 ] && echo "$(readlink -f "$ctarget")" != "$(realpath "$csource")"
+            echo "$ctarget exists, but is not owned by dotstow (Wrong link)"; exit 1
+        else
+            if [ "$SIMULATE" -gt 0 ] || rm -f "$ctarget"; then
+                [ $VERBOSE -gt 0 ] && echo "Unlinking $ctarget"
+            else
+                echo "Could not unlink $ctarget"; exit 1
+            fi
+        fi
+    done
+
+    [ "$VERBOSE" -gt 1 ] && echo "Leaving $stowrepo..."
+}
+
+restow() {
+    destow "$1" "$2"
+    stow "$1" "$2"
+}
+
+TARGET="$HOME"
+VERBOSE=0
+REPO="$(dirname $0)"
+COMMAND=stow
+HELP=0
+SIMULATE=0
+
+while getopts DSRvhnt: opt; do
+    case $opt in
+        D)
+            COMMAND=destow
+            ;;
+        S)
+            COMMAND=stow
+            ;;
+        R)
+            COMMAND=restow
+            ;;
+        t)
+            TARGET="$OPTARG"
+            ;;
+        v)
+            let VERBOSE++
+            ;;
+        h)
+            HELP=1
+            ;;
+        n)
+            SIMULATE=1
+            ;;
+        \?)
+            echo "Invalid option: -$OPTARG" >&2
+            exit 1
+            ;;
+        :)
+            echo "Option -$OPTARG required an argument." >&2
+            ;;
+    esac
+done
+shift $[ $OPTIND-1 ]
+
+TARGET=${TARGET/%\//} # Remove trailing slashes
+
+if [ "$HELP" -eq 1 -o "${#@}" -eq 0 ]; then
+    echo -e "Usage: ./dotstow.sh [-DSRvhn] [-t target] stows..."
+    echo -e "\t-D: Destow"
+    echo -e "\t-S: Stow"
+    echo -e "\t-R: Restow"
+    echo -e "\t-t: target folder (default ~)"
+    echo -e "\t-v: verbose"
+    echo -e "\t-h: show this help"
+    echo -e "\t-n: simulated/dry-run"
+    echo -e "\tstows: stow folders relative to dotstow.sh"
+fi
+
+for stow in $@; do
+    if [ ! -d "$REPO/$stow" ]; then
+        echo "Stow $stow not found." >&2
+        exit 2
+    fi
+    $COMMAND "$REPO/$stow" "$TARGET"
+done
+
+[ "$SIMULATE" -gt 0 ] && echo "Warning: Simulated. No actual changes to the filesystem have been done."