Merge pull request #1 from olenm/om/initial_script

initial script

.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+\#*\#
+*~

README.md

@@ -1,2 +1,25 @@
 # mysql-surface-schema
 bash script pulling mysql tables and column names, output in yml
+
+#### from the --help display
+usage: mysql_surface-schema-to-yml.sh  [-h | --help]  [ U=[mysql-user] ]  [ p=[mysql-password] ]  [ D=[mysql-database] ]  [ H=[mysql-host] ]  [ P=[mysql-port] ]
+
+  Creates a yml friendly database 'schema' (ordered alphabetically) where only details are table and column names.
+  > Parameter order does not matter, but is case sensitive
+
+  Env Vars (params take precedence):
+    MYSQL_USER
+    MYSQL_PASSWORD
+    MYSQL_DATABASE
+    MYSQL_HOST
+    MYSQL_PORT
+
+  Requirements:
+    awk
+    bash 4+
+    mysql
+
+  example:
+    read -s PW
+    MYSQL_PASSWORD=$PW ./mysql_surface-schema-to-yml.sh U=user D=db H=localhost P=3306
+    unset PW

mysql_surface-schema-to-yml.sh

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+#!/usr/bin/env bash
+
+function help() {
+cat <<EOF
+usage: ${0##*/}  [ U=[mysql-user] ]  [ p=[mysql-password] ]  [ D=[mysql-database] ]  [ H=[mysql-host] ]  [ P=[mysql-port] ]
+
+  Creates a yml friendly database 'schema' (ordered alphabetically) where only details are table and column names.
+  > Parameter order does not matter, but is case sensitive
+
+  Env Vars (params take precedence):
+    MYSQL_USER
+    MYSQL_PASSWORD
+    MYSQL_DATABASE
+    MYSQL_HOST
+    MYSQL_PORT
+
+  Requirements:
+    awk
+    bash 4+
+    mysql
+
+  example:
+    read -s PW
+    MYSQL_PASSWORD=\$PW ./mysql_surface-schema-to-yml.sh U=user D=db H=localhost P=3306
+    unset PW
+EOF
+}
+
+function err_chk() {
+    if [[ 0 -ne $1 ]]; then
+    echo -e "ERROR:\n $2" >&2
+    echo "" >&2
+    help >&2
+    exit 1
+fi
+
+}
+
+# regex arguments for combinations of --help (help, -h, ect)
+for x in ${@}; do 
+  if [[ "${x,,}" =~ ^(-+h(elp)?|-*help)$ ]]; then
+    help
+    exit 0
+  fi
+done
+
+args=(${@})
+for ((i=0; i< ${#args[@]}; i++)); do
+  if [[ "${args[$i]:0:2}" == "U=" ]]; then
+    UN="${args[$i]:2}"
+  fi
+  if [[ "${args[$i]:0:2}" == "p=" ]]; then
+    PW="${args[$i]:2}"
+  fi
+  if [[ "${args[$i]:0:2}" == "D=" ]]; then
+    DB="${args[$i]:2}"
+  fi
+  if [[ "${args[$i]:0:2}" == "H=" ]]; then
+    HN="${args[$i]:2}"
+  fi
+  if [[ "${args[$i]:0:2}" == "P=" ]]; then
+    HP="${args[$i]:2}"
+  fi
+done
+
+[[ -z "$UN" ]] && UN=${MYSQL_USER}
+[[ -z "$PW" ]] && PW=${MYSQL_PASSWORD}
+[[ -z "$DB" ]] && DB=${MYSQL_DATABASE-mysql}
+[[ -z "$HN" ]] && HN=${MYSQL_HOST-localhost}
+[[ -z "$HP" ]] && HP=${MYSQL_HOST-3306}
+
+
+
+
+function sqlexec() {
+    RES=$(mysql -u${UN} -p${PW} ${DB} -h ${HN} -P${HP} -Nse "${@}" 2>/dev/null)
+    if [[ 0 -ne $? ]]; then
+        echo "mysql -u${UN} -p<censored> ${DB} -h ${HN} -P${HP} -Nse  "
+        echo "   '${@}'"
+        exit 1
+    fi
+    echo "$RES" | sort -u
+}
+
+
+TABLES=$(sqlexec "show tables;" )
+err_chk $? "${TABLES}"
+
+echo "---"
+for T in $TABLES; do
+    echo "${T}:"
+    RES=$(sqlexec "show columns from ${T};")
+    err_chk $? "${RES}"
+    echo "${RES}" | awk '{print "  - "$1}'
+done
+