slimfits
Version:
Package for loading data stored in FITS data format
102 lines • 4.64 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var ValueConverters_1 = require("./ValueConverters");
var interfaces_1 = require("../interfaces");
var Keyword = /** @class */ (function () {
function Keyword(key, value, comment) {
if (value === void 0) { value = null; }
if (comment === void 0) { comment = ''; }
this.key = key;
this.value = value;
this.comment = comment;
}
Keyword.isLastLine = function (line) {
return line.indexOf('END ', 0) === 0;
};
return Keyword;
}());
exports.Keyword = Keyword;
var KeywordsManager = /** @class */ (function () {
function KeywordsManager() {
}
KeywordsManager.single = function (header, key) {
return header.filter(function (k) { return k.key === key; })[0]; // undefined if not found
};
KeywordsManager.getValue = function (header, key, defaultValue) {
var values = header.filter(function (k) { return k.key === key; });
return values.length === 0 ? defaultValue : values[0].value;
};
KeywordsManager.hasValue = function (header, key, value) {
return header.some(function (k) { return k.key === key && k.value === value; });
};
KeywordsManager.hasValueFromList = function (header, key, values) {
return header.some(function (k) { return k.key === key && values.indexOf(k.value) > -1; });
};
KeywordsManager.convert = function (value) {
var jsType = typeof value;
if (jsType === 'number') {
jsType = (KeywordsManager.isInt(value) ? 'int' : 'float');
}
if (jsType === 'object' ? value.getMonth : void 0) {
jsType = 'date';
}
return KeywordsManager.getConverterByType(jsType);
};
KeywordsManager.convertBack = function (value, name) {
var converter = KeywordsManager.getConverterByName(name);
return converter.convertBack(value);
};
KeywordsManager.parseKeyword = function (line) {
var keyword = new Keyword(line.substring(0, interfaces_1.Constants.keyLength).trim());
if (line.substr(interfaces_1.Constants.keyLength, 2) === '= ') {
if (line.charAt(31) === '/') {
keyword.value = KeywordsManager.convertBack(line.substr(10, 21).trim(), keyword.key);
keyword.comment = line.substr(32).trim();
}
else {
var valueAndComment = line.substr(10, interfaces_1.Constants.lineLength - 10);
var slashIdx = valueAndComment.lastIndexOf(' /');
var hasNoComment = slashIdx === -1;
if (hasNoComment) {
keyword.value = KeywordsManager.convertBack(valueAndComment.trim(), keyword.key);
}
else {
keyword.value = KeywordsManager.convertBack(valueAndComment.substring(0, slashIdx).trim(), keyword.key);
keyword.comment = valueAndComment.substring(slashIdx + 1).trim();
}
}
}
else {
var value = line.substr(interfaces_1.Constants.keyLength, interfaces_1.Constants.lineLength - interfaces_1.Constants.keyLength);
keyword.value = KeywordsManager.convertBack(value, keyword.key);
}
return keyword;
};
KeywordsManager.getConverterByName = function (name) {
// first look for exact match
if (name in ValueConverters_1.ValueConverters.registeredNames) {
return ValueConverters_1.ValueConverters.registeredNames[name];
}
// then look for keywords that start with provided name
var foundKeys = Object.keys(ValueConverters_1.ValueConverters.registeredPrefixedNames)
.filter(function (k) { return name.indexOf(k) === 0; });
if (foundKeys.length > 0) {
return ValueConverters_1.ValueConverters.registeredPrefixedNames[foundKeys[0]];
}
else {
return ValueConverters_1.ValueConverters.defaultConverter;
}
};
KeywordsManager.isInt = function (num) {
return typeof num === 'number' && parseFloat(num.toString()) === parseInt(num.toString(), 10) && !isNaN(num);
};
KeywordsManager.getConverterByType = function (type) {
if (type in ValueConverters_1.ValueConverters.registeredTypes) {
return ValueConverters_1.ValueConverters.registeredTypes[type];
}
return ValueConverters_1.ValueConverters.defaultConverter;
};
return KeywordsManager;
}());
exports.KeywordsManager = KeywordsManager;
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