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91 lines (80 loc) · 2.24 KB
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'use strict';
var path = require('path'),
configparser = require('gemini-configparser'),
GeminiError = require('../errors/gemini-error'),
option = configparser.option,
map = configparser.map;
function is(type) {
return function(value) {
if (typeof value !== type) {
throw new GeminiError('a value must be ' + type);
}
};
}
exports.assertNonNegative = (value, optName) => {
is('number')(value);
if (value < 0) {
throw new GeminiError(`"${optName}" must be non-negative`);
}
};
function resolveWithProjectRoot(value, config) {
return path.resolve(config.system.projectRoot, value);
}
function booleanOption(defaultValue) {
return option({
parseCli: parseBoolean,
parseEnv: parseBoolean,
validate: is('boolean'),
defaultValue: defaultValue
});
}
function parseBoolean(value) {
switch (value.toLowerCase()) {
case '1':
case 'yes':
case 'true':
return true;
case '0':
case 'no':
case 'false':
return false;
default:
throw new GeminiError('Unexpected value for boolean option ' + value);
}
}
function parsePrimitive(str) {
try {
return JSON.parse(str);
} catch (error) {
throw new GeminiError('a value must be a primitive type');
}
}
function positiveIntegerOption(defaultValue) {
return option({
parseEnv: Number,
parseCli: Number,
defaultValue: defaultValue,
validate: function(value) {
if (typeof value !== 'number') {
throw new GeminiError('Field must be an integer number');
}
if (value <= 0) {
throw new GeminiError('Field must be positive');
}
if (Math.floor(value) !== value) {
throw new GeminiError('Field must be an integer number');
}
}
});
}
function anyObject() {
return map(option({
parseEnv: parsePrimitive,
parseCli: parsePrimitive
}));
}
exports.is = is;
exports.resolveWithProjectRoot = resolveWithProjectRoot;
exports.anyObject = anyObject;
exports.booleanOption = booleanOption;
exports.positiveIntegerOption = positiveIntegerOption;