App skeleton

4 files changed, 202 insertions, 0 deletions

diff --git a/lib/functions b/lib/functions
new file mode 100644
index 0000000..473ea9e
--- /dev/null
+++ b/lib/functions
@@ -0,0 +1,10 @@
+#!/bin/bash
+#
+# Common functions.
+#
+
+# Setup environment
+hydra_set_env $*
+source $APP_BASE/lib/git
+source $APP_BASE/lib/misc
+source $APP_BASE/lib/tmpfile
diff --git a/lib/git b/lib/git
new file mode 100644
index 0000000..6e7f05a
--- /dev/null
+++ b/lib/git
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Add a pattern into gitignore
+function hydra_git_ignore {
+  if [ ! -z "$BASEDIR/.gitignore" ]; then
+    echo $1 > $BASEDIR/.gitignore
+    hydra_exec git $BASEDIR add .gitignore
+  else
+    if ! grep -q -e "^$1$" $BASEDIR/.gitignore; then
+      echo $1 >> $BASEDIR/.gitignore
+    fi
+  fi
+}
+
+# Check if a folder is inside a git repository
+function hydra_is_git {
+  if [ -z "$1" ]; then
+    false
+  elif [ ! -d "$1" ]; then
+    false
+  elif [ -d "$1/.git" ]; then
+    true
+  else
+    cwd="`pwd`"
+    cd $1 && git="`git status &> /dev/null`" && cd $cwd
+
+    if [ "$git" != "128" ]; then
+      true
+    else
+      false
+    fi
+  fi
+}
diff --git a/lib/misc b/lib/misc
new file mode 100644
index 0000000..5691465
--- /dev/null
+++ b/lib/misc
@@ -0,0 +1,114 @@
+#!/bin/bash
+
+# Setup main configuration and load preferences
+function hydra_config_load {
+  if [ -f "$HOME/.$NAME" ]; then
+    echo "Converting legacy configuration scheme..."
+    mv $HOME/.$NAME $HOME/.$NAME.tmp
+    mkdir $HOME/.$NAME
+    mv $HOME/.$NAME.tmp $CONFIG
+  fi
+
+  if [ ! -e "$CONFIG" ]; then
+    echo "Creating $CONFIG..."
+    mkdir `dirname $CONFIG`
+    touch $CONFIG
+    chmod 600 $CONFIG
+    echo "# Hydra config file." > $CONFIG
+    echo "" >> $CONFIG
+  fi
+
+  hydra_config_load_preferences
+}
+
+# Load config preferences
+function hydra_config_load_preferences {
+  # Load custom keyring preferences
+  if [ ! -z "$PREFERENCES" ] && [ -f "$PREFERENCES" ]; then
+    source $PREFERENCES
+  fi
+}
+
+# Load a parameter from config
+function hydra_config {
+  if [ -z "$CONFIG" ]; then
+    echo "Your have to set CONFIG variable in the code"
+    exit 1
+  elif [ -e "$CONFIG" ]; then
+    grep -e "^$1=" $CONFIG | tail -n 1 | cut -d = -f 2 | sed -e 's/"//g' -e "s/'//g" | sed -e 's/ *#.*$//'
+  else
+    echo "Config file not found: $CONFIG"
+    exit 1
+  fi
+}
+
+# Check if there is a given action
+function hydra_has_action {
+ if [ -z "$ACTIONS" ]; then
+   echo "Your have to set ACTIONS variable in the code"
+   exit 1
+ fi
+
+ if [ -e "$ACTIONS/$1" ]; then
+   true
+ else
+   false
+ fi
+}
+
+# Execute an action
+function hydra_exec {
+  # Setup
+  action="$1"
+  basedir="$2"
+  shift 2
+  
+  # Dispatch
+  if hydra_has_action $action; then
+    $ACTIONS/$action $basedir $*
+  fi
+}
+
+# Set needed environment variables and do basic checks.
+function hydra_set_env {
+  if [ -z "$1" ]; then
+    echo "Error: missing arguments for hydra_set_env"
+    exit 1    
+  fi
+}
+
+# Get a command argument
+function hydra_get_command {
+  # Aditional parameters
+  COMMAND="$1"
+  
+  if [ -z "$COMMAND" ]; then
+    hydra_action_usage command
+    exit 1
+  fi
+}
+
+# Run the action usage
+function hydra_action_usage {
+  if [ "`type -t "hydra_usage_$BASENAME"`" == "function" ]; then
+    # Use custom action usage
+    hydra_usage_$BASENAME
+  else
+    # Default usage
+    echo "Usage: hydra|hydractl <command> [arguments]"
+  fi
+}
+
+function hydra_dispatch {
+  BASEDIR="`hydra_config $KEYRING`"
+
+  # Dispatch
+  if [ ! -z "$BASEDIR" ]; then
+    shift 2
+    hydra_exec $ACTION $BASEDIR $*
+    exit $?
+  else
+    echo "No keydir configured for $KEYRING"
+    exit 1
+  fi
+}
diff --git a/lib/tmpfile b/lib/tmpfile
new file mode 100644
index 0000000..886d61c
--- /dev/null
+++ b/lib/tmpfile
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Setup a temporary file
+function hydra_set_tmpfile {
+  if [ -z "$BASEDIR" ]; then
+    echo "Please set BASEDIR before creating a tmp file"
+    exit 1
+  fi
+
+  if [ -z "$1" ]; then
+    template="$BASEDIR/tmp/hydra.XXXXXXXXXX"
+  else
+    template="$BASEDIR/tmp/$1.XXXXXXXXXX"
+  fi
+
+  mkdir -p $BASEDIR/tmp
+  hydra_git_ignore 'tmp/*'
+
+  if [ "$2" == "-d" ]; then
+    TMPWORK="`mktemp -d $template`"
+  else
+    TMPWORK="`mktemp $template`"
+  fi
+  
+  if [ "$?" != "0" ]; then
+    echo "Error: can't set TMPWORK $TMPWORK"
+    exit 1
+  fi
+
+  trap "hydra_unset_tmpfile $TMPWORK; exit" INT TERM EXIT
+}
+
+# Remove a temporary file
+function hydra_unset_tmpfile {
+  if [ -z "$1" ]; then
+    echo "No tmp file set"
+  fi
+
+  rm -f $1
+
+  if [ "$?" != "0" ]; then
+    echo "Warning: could not delete file $1. Please delete it manually as it might have sensitive information."
+    exit 1
+  fi
+}