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This file allows creating simple objects in Bash scripts
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| #!/bin/bash -e | |
| ## This helper allows to create simulated objects in Bash | |
| ## Source: https://gist.github.com/josecanciani/c036b5c63befa4d09acb1767e2a0b889 | |
| ## | |
| ## USAGE | |
| ## | |
| ## Lets create a person with first and last name | |
| ## | |
| ## source /path/to/where/you/downloaded/object.sh | |
| ## new person firstName lastName | |
| ## person.firstName = "Jose" | |
| ## person.lastName = "Canciani" | |
| ## echo "We've created a person named " $(person.firstName) $(person.lastName) | |
| ## | |
| _OBJECT_CREATED=() | |
| function _OBJECT_getClassCode() { | |
| OBJECT_NAME=$1 | |
| shift | |
| cat <<EOF | |
| ## | |
| ## This is an auto-generated code to create the ${OBJECT_NAME} object | |
| ## | |
| # properies storage | |
| ${OBJECT_NAME}_OBJECT_PROPS=() | |
| EOF | |
| I=0 | |
| for PROP in "$@" | |
| do | |
| echo "${OBJECT_NAME}_OBJECT_PROP_ID_${PROP}=$I;" | |
| ((I=I+1)) | |
| done | |
| cat <<EOF | |
| ${OBJECT_NAME}._get() { | |
| echo \${${OBJECT_NAME}_OBJECT_PROPS[\$1]} | |
| } | |
| ${OBJECT_NAME}._set() { | |
| ${OBJECT_NAME}_OBJECT_PROPS[\$1]=\$2 | |
| } | |
| EOF | |
| for PROP in "$@" | |
| do | |
| cat <<EOF | |
| ${OBJECT_NAME}.${PROP}() { | |
| if [ "\$1" == "=" ] | |
| then | |
| ${OBJECT_NAME}._set \$${OBJECT_NAME}_OBJECT_PROP_ID_${PROP} \$2 | |
| else | |
| ${OBJECT_NAME}._get \$${OBJECT_NAME}_OBJECT_PROP_ID_${PROP} | |
| fi | |
| } | |
| EOF | |
| done | |
| cat <<EOF | |
| ## | |
| ## End of auto-generated code for the ${OBJECT_NAME} object | |
| ## | |
| EOF | |
| } | |
| function new() { | |
| if [[ " ${_OBJECT_CREATED[*]} " =~ " $1 " ]]; then echo "Found duplicated object $1" ; exit 1; fi | |
| OBJECT_NAME="$1" | |
| if ! [[ "$OBJECT_NAME" =~ ^[a-zA-Z0-9_]+$ ]]; then echo "Invalid object name $1" ; exit 1; fi | |
| shift | |
| for PROP in "$@" | |
| do | |
| if ! [[ "$PROP" =~ ^[a-zA-Z0-9_]+$ ]]; then echo "Invalid object property name $PROP"; exit 1; fi | |
| done | |
| _OBJECT_CREATED+=("$OBJECT_NAME") | |
| if [ "$DEBUG" != "" ]; then _OBJECT_getClassCode "$OBJECT_NAME" $*; fi | |
| eval "$(_OBJECT_getClassCode "$OBJECT_NAME" $*)" | |
| } |
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