From 2cd07d308c7a218bba0e321fa59f3d54d5c522ef Mon Sep 17 00:00:00 2001
From: Tom Willemse
Date: Mon, 10 Mar 2014 20:32:10 +0100
Subject: Initial commit

---
 README.org            |  7 +++++++
 copydb                | 44 ++++++++++++++++++++++++++++++++++++++++++++
 copydb-current-branch | 28 ++++++++++++++++++++++++++++
 rebasedb              | 40 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 119 insertions(+)
 create mode 100644 README.org
 create mode 100755 copydb
 create mode 100755 copydb-current-branch
 create mode 100755 rebasedb

diff --git a/README.org b/README.org
new file mode 100644
index 0000000..b99350e
--- /dev/null
+++ b/README.org
@@ -0,0 +1,7 @@
+Some simple utilities for working with MySQL databases.
+
+- copydb :: Create a copy of a database under a new name.
+- copydb-current-branch :: Create a copy of a database under a new
+     name based on the current git branch. Requires =copydb=.
+- rebasedb :: Destroy and recreate a database based on another
+              database.
diff --git a/copydb b/copydb
new file mode 100755
index 0000000..df05f44
--- /dev/null
+++ b/copydb
@@ -0,0 +1,44 @@
+#!/bin/zsh
+## copydb --- Create a copy of a database under a new name
+
+## Commentary:
+
+# Create a copy of the database specified as the first argument as a
+# new database named by the second argument. Making usage:
+
+#    copydb <from> <to>
+
+# This doesn't try to check for any existing information, it just
+# tries to create and copy. It is up to the user to make sure that
+# that can actually be done.
+
+# During execution it asks for the root password of MySQL so it can
+# create a new database. It will also ask for another user and its
+# password to load the database with, this may still be the same user,
+# but allows one to specify different users if necessary.
+
+## Code:
+
+echo -n 'Database root PW (for DB creation): '
+read -s ROOTPW
+echo
+
+echo -n 'Database user for new DB: '
+read DBUSER
+
+echo -n 'Database user PW for new DB: '
+read -s DBPASSW
+echo
+
+mysql -u root -p"$ROOTPW" -B <<EOF
+CREATE DATABASE \`$2\`;
+GRANT ALL ON \`$2\`.* to '$DBUSER'@'localhost';
+EOF
+
+mysqldump -u "$DBUSER" -p"$DBPASSW" "$1" \
+    | mysql -u "$DBUSER" -p"$DBPASSW" "$2" \
+|| mysql -u root -p"$ROOTPW" -B <<EOF
+DROP DATABASE \`$2\`;
+EOF
+
+unset ROOTPW
diff --git a/copydb-current-branch b/copydb-current-branch
new file mode 100755
index 0000000..1228941
--- /dev/null
+++ b/copydb-current-branch
@@ -0,0 +1,28 @@
+#!/usr/bin/zsh
+## copydb-current-branch --- Create a copy of a database for the current branch
+
+## Commentary:
+
+# Use `copydb' to create a copy of the database named after the
+# current branch. This requires the current working directory to be a
+# git repository. The name of the database is created by substituting
+# all occurrences of `-' with `_'. The database copied from is always
+# called `aeos_babel'. The database copied to is called
+# `aeos_<branchname>'.
+
+# This program is just a wrapper for `copydb', so all information
+# related to it is also relevant, please read its comments for more
+# info.
+
+# Usage is:
+
+#    copydb-current-branch
+
+## Code:
+
+base="aeos_babel"
+branch=$(git branch --no-color | grep '*' | sed -e 's/* //' -e 's/-/_/g')
+nbranch="aeos_${branch}"
+
+echo Copying "$base" to "$nbranch"
+copydb "$base" "$nbranch"
diff --git a/rebasedb b/rebasedb
new file mode 100755
index 0000000..8d80a8a
--- /dev/null
+++ b/rebasedb
@@ -0,0 +1,40 @@
+#!/bin/zsh
+## rebasedb --- Recreate a database based on another database.
+
+## Commentary:
+
+# Recreate the database specified as the first parameter based on the
+# database named by the second parameter. Basically this deletes the
+# database named by the first argument and then copies the database
+# named by the second argument into its place.
+
+# This command asks for the password of the root user to drop, create
+# and fill the database. It is assumed that the proper rights have
+# been specified before and that they will be carried over.
+
+# For usage information run the program without any arguments.
+
+## Code:
+
+if [ ! ${#@} -eq 2 ]; then
+    echo "Usage:  $(basename $0) [todb] [fromdb]"
+    echo
+    echo "Rebases TODB on FROMDB so that TODB holds the same schema and "
+    echo "information as FROMDB"
+    exit 1
+fi
+
+echo -n 'Database root PW (for DB manipulation): '
+read -s ROOTPW
+echo
+
+mysql -u root -p"$ROOTPW" -B <<EOF
+DROP DATABASE $1; CREATE DATABASE $1;
+EOF
+
+if [ $? -eq 0 ]; then echo "Recreated database $1"; else exit 2; fi
+
+mysqldump -u root -p"$ROOTPW" "$2" \
+    | mysql -u root -p"$ROOTPW" -B "$1"
+
+if [ $? -eq 0 ]; then echo "Copied $2 to $1"; fi
-- 
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