[parser] Added --git-dir option. Otherwise, GIT_DIR is defined as the current working directory

[cmd_deploy] [cmd_du] [cmd_exclude] [cmd_fsck] [cmd_include] [cmd_update] Added checks to ensure DB_FILE and GIT_DIR exist

src/cmd_deploy

@@ -16,6 +16,7 @@ cmd_deploy() {
     local ERR=false
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
     [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
 
     if [[ -z "$(grep LAST_DEPLOY ${DB_FILE})" ]]; then
         echo -e "LAST_DEPLOY\t$(git -C "${GIT_DIR}" rev-list HEAD | tail -n 1)" >> ${DB_FILE}

src/cmd_du

@@ -14,7 +14,9 @@ cmd_du() {
     local GIT_DIR="${1}"
     local TARGET="${2}"
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
-    
+    [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
+
     local imageidList=($(awk 'BEGIN{FS="\t"}{if($1=="true"){print $2}}' ${DB_FILE} | awk '!seen[$0]++'))
     local DU="$(print_imageid_du ${GIT_DIR} ${imageidList[@]})"
     _msg ECHO "Current estimated disk usage: ${DU} bytes"

src/cmd_exclude

@@ -20,7 +20,8 @@ cmd_exclude() {
     local TARGET="${2}"
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"; shift 2
     local conditionList=("${@}")
-    echo ${conditionList[@]}
+    [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
 
     for condition in ${conditionList[@]}; do
         _msg EXEC "Excluding all tracks that match the following condition: ${condition}"

src/cmd_fsck

@@ -14,6 +14,8 @@ cmd_fsck() {
     local GIT_DIR="${1}"
     local TARGET="${2}"
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
+    [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
 
     chk_deployed_ids "${TARGET}" "${DB_FILE}"
     chk_nonexistent_ids "${TARGET}" "${DB_FILE}"

src/cmd_include

@@ -20,6 +20,8 @@ cmd_include() {
     local TARGET="${2}"
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"; shift 2
     local conditionList=("${@}")
+    [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
 
     for condition in ${conditionList[@]}; do
         _msg EXEC "Including all tracks that match the following condition: ${condition}"

src/cmd_update

@@ -14,6 +14,8 @@ cmd_update() {
     local GIT_DIR="${1}"
     local TARGET="${2}"
     local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
+    [[ ! -f "${DB_FILE}" ]] && return 1
+    [[ ! -f "${GIT_DIR}/.git" ]] && return 2
 
     # In the event that LAST_COMMIT OR DB_FILE does not exist, echo out that the LAST_COMMIT 
     # is the first COMMIT of GIT_DIR, thus stating that no database update has ever occured

src/parser

@@ -4,35 +4,80 @@
 # Parses arguments and commands from shell
 ###
 
+GIT_DIR="./"
+
+#Recursive argument parser
+while true; do
+	case ${1} in
+		--help)
+			help
+			exit
+		;;
+
+		--info)
+			help info
+			exit
+		;;
+
+
+        --git-dir=*)    
+            if [ -z "${1#*=}" ]; then
+                help
+            else
+                log ECHO "--git-dir called. Git directory now defined as: ${1#*=}"
+                GIT_DIR="${1#*=}"
+            fi
+
+        ;;
+		*)
+			break
+		;;
+
+	esac
+	shift
+done
+
+
+
 case "${1}" in
     exclude)
         shift
-        cmd_exclude ${@}
+        cmd_exclude "${GIT_DIR}" ${@}
+        [[ $? -eq 1 ]] && echo "Database file non-existent"
+        [[ $? -eq 2 ]] && echo "Git directory not a valid git repository"
     ;;
 
     include)
         shift
-        cmd_include ${@}
-    ;;
+        cmd_include$ "${GIT_DIR}" ${@}
+        [[ $? -eq 1 ]] && echo "Database file non-existent"
+        [[ $? -eq 2 ]] && echo "Git directory not a valid git repository"
+   ;;
 
     deploy)
         shift
-        cmd_deploy ${@}
-    ;;
+        cmd_deploy "${GIT_DIR}" ${@}
+        [[ $? -eq 1 ]] && echo "Database file non-existent"
+        [[ $? -eq 2 ]] && echo "Git directory not a valid git repository"
+   ;;
 
     update)
         shift
-        cmd_update ${@}
-    ;;
+        cmd_update "${GIT_DIR}" ${@}
+         [[ $? -eq 1 ]] && echo "Database file non-existent"
+        [[ $? -eq 2 ]] && echo "Git directory not a valid git repository"
+  ;;
 
     du)
         shift
-        cmd_du "${@}"
-    ;;
+        cmd_du "${GIT_DIR}" "${@}"
+        [[ $? -eq 1 ]] && echo "Database file non-existent"
+        [[ $? -eq 2 ]] && echo "Git directory not a valid git repository"
+   ;;
    
     fsck)
         shift
-        cmd_fsck "${@}"
+        cmd_fsck "${GIT_DIR}" "${@}"
     ;;
 esac