96 lines
2.8 KiB
Bash
96 lines
2.8 KiB
Bash
#!/bin/bash
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# echo loading module library
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# source with set -a and set +a to have these bootstrap functions available in the environment
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module_confirm() {
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local FILE
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local DIR
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local NAME
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DIR=$1
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NAME=$2
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# TODO use file instead for valid extensions
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# will look for valid module extensions and also look for duplicate modules with a directory which is not allowed
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FILE="$($(which find) -L ${DIR} -type f -name "${NAME}.mod" -o -name "${NAME}".lib -o -name "${NAME}".func -o -name "${NAME}".sh -o -name "${NAME}".env)"
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# echo files found $FILE
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COUNT=0
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if [ "$FILE" ]; then
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COUNT=$(echo $FILE | xargs -n 1 | wc -l)
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fi
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if [ $COUNT -gt 1 ]; then
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>&2 echo two or more modules of same name found, aborting
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>&2 echo $FILE | xargs -n 1
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return 1
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fi
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[[ $COUNT == 1 ]] && echo $FILE
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}
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# Returns path to module if succesful
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module_find() {
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[ ! $1 ] && >&2 echo "no module specified" && return 1
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local MDIRS
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local MDIR
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local DIRS
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local MODULE=$1
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# MODULE_DIRS is array set in the environment and is an array of additional directories to
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# search for modules. This makes is easy to include a custom module libraries outside
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# the shell system. These take precedence over any modules found in shell directories below.
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# Precedence is first in list to last.
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# BASH_SHELL_DIRS holds shell directories to search for modules. If will be searched
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# in revsere order, user or network repos over host over base
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DIRS=( ${BASH_SHELL_DIRS:-$BASH_SHELL_BASE} ${BASH_SHELL_NETWORKS_LOADED} )
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[ -d BASH_SHELL_USER_DIR ] && DIRS=("${DIRS[@]}" "BASH_SHELL_USER_DIR")
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[ -d $BASH_SHELL_DEV ] && DIRS=("${DIRS[@]}" "$BASH_SHELL_DEV")
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# echo "before: ${DIRS[@]}";
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DIRS=("${DIRS[@]/%/\/modules}")
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DIRS=("${MODULE_DIRS[@]}" "${DIRS[@]}")
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# echo "after: ${DIRS[@]}"
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cnt=${#DIRS[@]}
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for ((i=1;i<=cnt;i++)); do
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# find modules in reverse order so more specific ones override
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DIR="${DIRS[cnt-i]}"
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if [[ -d $DIR ]]; then
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# echo $DIR $MODULE
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RES=$(module_confirm "$DIR" "$MODULE")
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[ $? -eq 0 ] && echo $RES && return 0
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fi
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done
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>&2 echo no module found anywhere
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return 1
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}
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module_load() {
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local module;local mpath
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[ ! $1 ] && >&2 echo "no module specified" && return 1
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local FILE
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for module in "$@"
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do
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# is there way to not reload modules??
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# if [[ $(eval "echo \"\$MODULE_$module_LOADED\"") ]]; then
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# echo $module already loaded
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# else
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eval "_${module}_ () { echo "$fname test"; }"
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mpath=$(module_find $module)
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[ $? -ne 0 ] && >&2 echo extreme warning: no module $1 found, so was not loaded
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source $mpath "$@"
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# eval "MODULE_$module_LOADED=true"
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# fi
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done
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}
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# put here so it's globally available
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# runs a script but loads the current interactive shell environment, not recommended unless there is a need
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# mostly for testing. Better to source some part of the shell as needed using shell-process-directory module
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shell_run () {
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bash -ci ". ${1}"
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}
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