Marc Mintel
5397309103
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40 lines
2.4 KiB
Plaintext
40 lines
2.4 KiB
Plaintext
import { GraphQLScalarType, Kind } from 'graphql';
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import { createGraphQLError } from '../../error.js';
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//Regex for the various letter subclasses of the Library of Congress Classification
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//As defined in the pdfs available by clicking on the letters at this link
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//https://www.loc.gov/catdir/cpso/lcco/
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const LCC_SUBCLASS_PREFIX = /^((AC|AE|AG|AI|AM|AN|AP|AS|AY|AZ)|[B][CDFHJLMPQRSTVX]{0,1}|[C][BCDEJNRST]{0,1}|[D][AWBCDEFGH]{0,1}|[E]|[F]|[G][ABCEFNRTV]{0,1}|[H][ABCDEFGJMNQSTVX]{0,1}|[J][ACFJKLNQSVXZ]{0,1}|(K|KB[M,P,R,U]|KD[C,E,G,K,Z]{0,1}|KE[ABMNOPQSYZ]{0,1}|KF[ACDFGHIKLMNOPRSTUVWXZ]{0,1}|KG[ABCDEFGHJKLMNPQRSTUVWXYZ]{0,1}|KH[ACDFHKLMNPQSUW]{0,1}|KJ[ACEGHJKMNPRSTVW]{0,1}|KK[ABEFGHIJKLMNPQRSTVWXYZ]{0,1}|KL[ABDEFHMNPQRSTVW]{0,1}|KM[CEFGHJKLMNPQSTUVXY]{0,1}|KN[CEFGHKLMNPQRSTUVWXY]{0,1}|KP[ACEFGHJKLMPSTVW]{0,1}|KQ[CEGHJKMPTVWX]{0,1}|KR[BCEGKLMNPRSUVWXY]{0,1}|KS[ACEGHKLNPRSTUVWXYZ]{0,1}|KT[ACDEFGHJKLNQRTUVWXYZ]{0,1}|KU[ABCDEFGHNQ]{0,1}|KV[BCEHLMNPQRSUW]{0,1}|KW[ACEGHLPQRTWX]{0,1}|KZ[AD]{0,1})|[L][ABCDEFGHJT]{0,1}|[M][LT]{0,1}|[N][ABCDEKX]{0,1}|[P][ABCDEFGHJKLMNQRSTZ]{0,1}|[Q][ABCDEHKLMPR]{0,1}|[R][ABCDEFGJKLMSTVXZ]{0,1}|[S][BDFHK]{0,1}|[T][ACDEFGHJKLNPRSTX]{0,1}|[U][ABCDEFGH]{0,1}|[V][ABCDEFGKM]{0,1}|[Z][A]{0,1})$/;
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const validate = (value, ast) => {
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if (typeof value !== 'string') {
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throw createGraphQLError(`Value is not string: ${value}`, { nodes: ast });
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}
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if (!LCC_SUBCLASS_PREFIX.test(value)) {
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throw createGraphQLError(`Value is not a valid LCC Subclass: ${value}`, { nodes: ast });
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}
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return value;
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};
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const specifiedByURL = 'https://www.loc.gov/catdir/cpso/lcco/';
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export const GraphQLLCCSubclassConfig = {
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name: 'LCCSubclass',
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description: `A field whose value conforms to the Library of Congress Subclass Format ttps://www.loc.gov/catdir/cpso/lcco/`,
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serialize: validate,
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parseValue: validate,
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parseLiteral(ast) {
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if (ast.kind !== Kind.STRING) {
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throw createGraphQLError(`Can only validate strings as LCC Subclasses but got a: ${ast.kind}`, { nodes: ast });
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}
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return validate(ast.value, ast);
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},
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specifiedByURL,
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specifiedByUrl: specifiedByURL,
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extensions: {
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codegenScalarType: 'string',
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jsonSchema: {
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title: 'DeweyDecimal',
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type: 'string',
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pattern: LCC_SUBCLASS_PREFIX.source,
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},
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},
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};
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export const GraphQLLCCSubclass = /*#__PURE__*/ new GraphQLScalarType(GraphQLLCCSubclassConfig);
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