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83 lines
2.5 KiB
83 lines
2.5 KiB
2 years ago
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#!/bin/sh
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# This spell reads the enchanted attributes from the specified file.
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# If a field name is provided as the second argument, it reads the attribute with that name.
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# If the file or attribute does not exist, it raises an error.
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# Check that the correct number of arguments was provided
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if [ $# -lt 1 ] || [ $# -gt 2 ]; then
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echo "Error: This spell requires one or two arguments: a file path and an optional attribute name."
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exit 1
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fi
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# Set the file path and attribute name variables
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file=$1
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attribute=$2
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# Check that the file exists
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if [ ! -f "$file" ]; then
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echo "Error: The file does not exist."
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exit 1
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fi
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# Define a function to read the attribute value using the available commands
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read_attribute_value() {
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# Try to read the attribute using the 'attr' command
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attribute_value=$(attr -g "$1" "$2" 2> /dev/null | cut -d ":" -f 2 | xargs)
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# If the 'attr' command is not available, try using the 'xattr' command
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if [ -z "$attribute_value" ]; then
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attribute_value=$(xattr -p "$1" "$2" 2> /dev/null | cut -d ":" -f 2 | xargs)
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fi
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# If the 'xattr' command is not available, try using the 'getfattr' command
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if [ -z "$attribute_value" ]; then
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attribute_value=$(getfattr -n "$1" --only-values "$2" 2> /dev/null)
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fi
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# Return the attribute value
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echo "$attribute_value"
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}
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# If an attribute name was not provided, print all attributes in YAML format
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if [ -z "$attribute" ]; then
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attributes_found=0
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# Define a function to process each attribute
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process_attribute() {
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# Read the attribute value using the read_attribute_value function
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value=$(read_attribute_value "$1" "$file")
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# Check if the attribute value was set
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if [ -n "$value" ]; then
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# Print the attribute and value in YAML format
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printf "%s: %s\n" "$1" "$value"
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attributes_found=$((attributes_found + 1))
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fi
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}
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# Call the process_attribute function for each attribute
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for attribute in $(getfattr -m ".*" -e hex "$file" | cut -d ":" -f 1 | cut -d "." -f 2 | tr -d ' '); do
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process_attribute "$attribute"
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done
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# Check if no extended attributes were found
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if [ "$attributes_found" -eq 0 ]; then
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echo "No enchanted attributes found."
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fi
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# If an attribute name was provided, print the attribute value
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else
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# Read the attribute value using the read_attribute_value function
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value=$(read_attribute_value "$attribute" "$file")
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# Check if the attribute value was set
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if [ -z "$value" ]; then
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echo "Error: The attribute does not exist."
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exit 1
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fi
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# Print the attribute value
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echo "$value"
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fi
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