@qodalis/angular-cli
Version:
A lightweight and flexible command-line interface (CLI) tool designed to streamline workflows and automate tasks for developers.
71 lines • 8.49 kB
JavaScript
/**
* A utility class for parsing command strings into command names and arguments.
*/
export class CommandParser {
/**
* Parse a command string into a full command name and arguments.
* @param command - The full command string.
* @returns An object containing the full command name and arguments.
*/
parse(command) {
try {
// Match quoted strings, single-quoted strings, or unquoted words
const regex = /(?:--?([a-zA-Z0-9-_]+)(?:=("[^"]*"|'[^']*'|[^\s]+))?)|(?:[^\s]+)/g;
const matches = Array.from(command.matchAll(regex));
if (matches.length === 0) {
throw new Error('Invalid command string');
}
const commandParts = [];
const args = [];
// Process matches
matches.forEach((match) => {
if (match[1]) {
// Handle arguments
const key = match[1];
let value = match[2];
if (value) {
// Remove surrounding quotes, if any
value = value.replace(/^['"]|['"]$/g, '');
}
else {
// Flag without a value
value = true;
}
args.push({
name: key,
value: this.parseValue(value),
});
}
else if (!match[0].startsWith('--')) {
// Command name
commandParts.push(match[0]);
}
});
const commandName = commandParts.join(' ');
return {
commandName,
args,
};
}
catch (e) {
console.error('Unable to parse the command:', command, e);
return {
commandName: '',
args: [],
};
}
}
/**
* Parse individual values to their appropriate type.
* @param value - The value to parse.
* @returns The parsed value.
*/
parseValue(value) {
if (!isNaN(Number(value)))
return Number(value); // Convert numeric strings to numbers
if (value === 'true' || value === 'false')
return value === 'true'; // Convert "true"/"false" to boolean
return value; // Return as string otherwise
}
}
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