tedious/lib/token/colmetadata-token-parser.js

A TDS driver, for connecting to MS SQLServer databases.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _metadataParser = _interopRequireDefault(require("../metadata-parser"));

var _token = require("./token");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function readTableName(parser, options, metadata, callback) {
  if (metadata.type.hasTableName) {
    if (options.tdsVersion >= '7_2') {
      parser.readUInt8(numberOfTableNameParts => {
        const tableName = [];
        let i = 0;

        function next(done) {
          if (numberOfTableNameParts === i) {
            return done();
          }

          parser.readUsVarChar(part => {
            tableName.push(part);
            i++;
            next(done);
          });
        }

        next(() => {
          callback(tableName);
        });
      });
    } else {
      parser.readUsVarChar(callback);
    }
  } else {
    callback(undefined);
  }
}

function readColumnName(parser, options, index, metadata, callback) {
  parser.readBVarChar(colName => {
    if (options.columnNameReplacer) {
      callback(options.columnNameReplacer(colName, index, metadata));
    } else if (options.camelCaseColumns) {
      callback(colName.replace(/^[A-Z]/, function (s) {
        return s.toLowerCase();
      }));
    } else {
      callback(colName);
    }
  });
}

function readColumn(parser, options, index, callback) {
  (0, _metadataParser.default)(parser, options, metadata => {
    readTableName(parser, options, metadata, tableName => {
      readColumnName(parser, options, index, metadata, colName => {
        callback({
          userType: metadata.userType,
          flags: metadata.flags,
          type: metadata.type,
          collation: metadata.collation,
          precision: metadata.precision,
          scale: metadata.scale,
          udtInfo: metadata.udtInfo,
          dataLength: metadata.dataLength,
          schema: metadata.schema,
          colName: colName,
          tableName: tableName
        });
      });
    });
  });
}

async function colMetadataParser(parser) {
  while (parser.buffer.length - parser.position < 2) {
    await parser.streamBuffer.waitForChunk();
  }

  const columnCount = parser.buffer.readUInt16LE(parser.position);
  parser.position += 2;
  const columns = [];

  for (let i = 0; i < columnCount; i++) {
    let column;
    readColumn(parser, parser.options, i, c => {
      column = c;
    });

    while (parser.suspended) {
      await parser.streamBuffer.waitForChunk();
      parser.suspended = false;
      const next = parser.next;
      next();
    }

    columns.push(column);
  }

  return new _token.ColMetadataToken(columns);
}

var _default = colMetadataParser;
exports.default = _default;
module.exports = colMetadataParser;
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["readTableName","parser","options","metadata","callback","type","hasTableName","tdsVersion","readUInt8","numberOfTableNameParts","tableName","i","next","done","readUsVarChar","part","push","undefined","readColumnName","index","readBVarChar","colName","columnNameReplacer","camelCaseColumns","replace","s","toLowerCase","readColumn","userType","flags","collation","precision","scale","udtInfo","dataLength","schema","colMetadataParser","buffer","length","position","streamBuffer","waitForChunk","columnCount","readUInt16LE","columns","column","c","suspended","ColMetadataToken","module","exports"],"sources":["../../src/token/colmetadata-token-parser.ts"],"sourcesContent":["import metadataParse, { Metadata } from '../metadata-parser';\n\nimport Parser, { ParserOptions } from './stream-parser';\nimport { ColMetadataToken } from './token';\n\nexport interface ColumnMetadata extends Metadata {\n  /**\n   * The column's name。\n   */\n  colName: string;\n\n  tableName?: string | string[] | undefined;\n}\n\nfunction readTableName(parser: Parser, options: ParserOptions, metadata: Metadata, callback: (tableName?: string | string[]) => void) {\n  if (metadata.type.hasTableName) {\n    if (options.tdsVersion >= '7_2') {\n      parser.readUInt8((numberOfTableNameParts) => {\n        const tableName: string[] = [];\n\n        let i = 0;\n        function next(done: () => void) {\n          if (numberOfTableNameParts === i) {\n            return done();\n          }\n\n          parser.readUsVarChar((part) => {\n            tableName.push(part);\n\n            i++;\n\n            next(done);\n          });\n        }\n\n        next(() => {\n          callback(tableName);\n        });\n      });\n    } else {\n      parser.readUsVarChar(callback);\n    }\n  } else {\n    callback(undefined);\n  }\n}\n\nfunction readColumnName(parser: Parser, options: ParserOptions, index: number, metadata: Metadata, callback: (colName: string) => void) {\n  parser.readBVarChar((colName) => {\n    if (options.columnNameReplacer) {\n      callback(options.columnNameReplacer(colName, index, metadata));\n    } else if (options.camelCaseColumns) {\n      callback(colName.replace(/^[A-Z]/, function(s) {\n        return s.toLowerCase();\n      }));\n    } else {\n      callback(colName);\n    }\n  });\n}\n\nfunction readColumn(parser: Parser, options: ParserOptions, index: number, callback: (column: ColumnMetadata) => void) {\n  metadataParse(parser, options, (metadata) => {\n    readTableName(parser, options, metadata, (tableName) => {\n      readColumnName(parser, options, index, metadata, (colName) => {\n        callback({\n          userType: metadata.userType,\n          flags: metadata.flags,\n          type: metadata.type,\n          collation: metadata.collation,\n          precision: metadata.precision,\n          scale: metadata.scale,\n          udtInfo: metadata.udtInfo,\n          dataLength: metadata.dataLength,\n          schema: metadata.schema,\n          colName: colName,\n          tableName: tableName\n        });\n      });\n    });\n  });\n}\n\nasync function colMetadataParser(parser: Parser): Promise<ColMetadataToken> {\n  while (parser.buffer.length - parser.position < 2) {\n    await parser.streamBuffer.waitForChunk();\n  }\n\n  const columnCount = parser.buffer.readUInt16LE(parser.position);\n  parser.position += 2;\n\n  const columns: ColumnMetadata[] = [];\n  for (let i = 0; i < columnCount; i++) {\n    let column: ColumnMetadata;\n\n    readColumn(parser, parser.options, i, (c) => {\n      column = c;\n    });\n\n    while (parser.suspended) {\n      await parser.streamBuffer.waitForChunk();\n\n      parser.suspended = false;\n      const next = parser.next!;\n\n      next();\n    }\n\n    columns.push(column!);\n  }\n\n  return new ColMetadataToken(columns);\n}\n\nexport default colMetadataParser;\nmodule.exports = colMetadataParser;\n"],"mappings":";;;;;;;AAAA;;AAGA;;;;AAWA,SAASA,aAAT,CAAuBC,MAAvB,EAAuCC,OAAvC,EAA+DC,QAA/D,EAAmFC,QAAnF,EAAsI;EACpI,IAAID,QAAQ,CAACE,IAAT,CAAcC,YAAlB,EAAgC;IAC9B,IAAIJ,OAAO,CAACK,UAAR,IAAsB,KAA1B,EAAiC;MAC/BN,MAAM,CAACO,SAAP,CAAkBC,sBAAD,IAA4B;QAC3C,MAAMC,SAAmB,GAAG,EAA5B;QAEA,IAAIC,CAAC,GAAG,CAAR;;QACA,SAASC,IAAT,CAAcC,IAAd,EAAgC;UAC9B,IAAIJ,sBAAsB,KAAKE,CAA/B,EAAkC;YAChC,OAAOE,IAAI,EAAX;UACD;;UAEDZ,MAAM,CAACa,aAAP,CAAsBC,IAAD,IAAU;YAC7BL,SAAS,CAACM,IAAV,CAAeD,IAAf;YAEAJ,CAAC;YAEDC,IAAI,CAACC,IAAD,CAAJ;UACD,CAND;QAOD;;QAEDD,IAAI,CAAC,MAAM;UACTR,QAAQ,CAACM,SAAD,CAAR;QACD,CAFG,CAAJ;MAGD,CArBD;IAsBD,CAvBD,MAuBO;MACLT,MAAM,CAACa,aAAP,CAAqBV,QAArB;IACD;EACF,CA3BD,MA2BO;IACLA,QAAQ,CAACa,SAAD,CAAR;EACD;AACF;;AAED,SAASC,cAAT,CAAwBjB,MAAxB,EAAwCC,OAAxC,EAAgEiB,KAAhE,EAA+EhB,QAA/E,EAAmGC,QAAnG,EAAwI;EACtIH,MAAM,CAACmB,YAAP,CAAqBC,OAAD,IAAa;IAC/B,IAAInB,OAAO,CAACoB,kBAAZ,EAAgC;MAC9BlB,QAAQ,CAACF,OAAO,CAACoB,kBAAR,CAA2BD,OAA3B,EAAoCF,KAApC,EAA2ChB,QAA3C,CAAD,CAAR;IACD,CAFD,MAEO,IAAID,OAAO,CAACqB,gBAAZ,EAA8B;MACnCnB,QAAQ,CAACiB,OAAO,CAACG,OAAR,CAAgB,QAAhB,EAA0B,UAASC,CAAT,EAAY;QAC7C,OAAOA,CAAC,CAACC,WAAF,EAAP;MACD,CAFQ,CAAD,CAAR;IAGD,CAJM,MAIA;MACLtB,QAAQ,CAACiB,OAAD,CAAR;IACD;EACF,CAVD;AAWD;;AAED,SAASM,UAAT,CAAoB1B,MAApB,EAAoCC,OAApC,EAA4DiB,KAA5D,EAA2Ef,QAA3E,EAAuH;EACrH,6BAAcH,MAAd,EAAsBC,OAAtB,EAAgCC,QAAD,IAAc;IAC3CH,aAAa,CAACC,MAAD,EAASC,OAAT,EAAkBC,QAAlB,EAA6BO,SAAD,IAAe;MACtDQ,cAAc,CAACjB,MAAD,EAASC,OAAT,EAAkBiB,KAAlB,EAAyBhB,QAAzB,EAAoCkB,OAAD,IAAa;QAC5DjB,QAAQ,CAAC;UACPwB,QAAQ,EAAEzB,QAAQ,CAACyB,QADZ;UAEPC,KAAK,EAAE1B,QAAQ,CAAC0B,KAFT;UAGPxB,IAAI,EAAEF,QAAQ,CAACE,IAHR;UAIPyB,SAAS,EAAE3B,QAAQ,CAAC2B,SAJb;UAKPC,SAAS,EAAE5B,QAAQ,CAAC4B,SALb;UAMPC,KAAK,EAAE7B,QAAQ,CAAC6B,KANT;UAOPC,OAAO,EAAE9B,QAAQ,CAAC8B,OAPX;UAQPC,UAAU,EAAE/B,QAAQ,CAAC+B,UARd;UASPC,MAAM,EAAEhC,QAAQ,CAACgC,MATV;UAUPd,OAAO,EAAEA,OAVF;UAWPX,SAAS,EAAEA;QAXJ,CAAD,CAAR;MAaD,CAda,CAAd;IAeD,CAhBY,CAAb;EAiBD,CAlBD;AAmBD;;AAED,eAAe0B,iBAAf,CAAiCnC,MAAjC,EAA4E;EAC1E,OAAOA,MAAM,CAACoC,MAAP,CAAcC,MAAd,GAAuBrC,MAAM,CAACsC,QAA9B,GAAyC,CAAhD,EAAmD;IACjD,MAAMtC,MAAM,CAACuC,YAAP,CAAoBC,YAApB,EAAN;EACD;;EAED,MAAMC,WAAW,GAAGzC,MAAM,CAACoC,MAAP,CAAcM,YAAd,CAA2B1C,MAAM,CAACsC,QAAlC,CAApB;EACAtC,MAAM,CAACsC,QAAP,IAAmB,CAAnB;EAEA,MAAMK,OAAyB,GAAG,EAAlC;;EACA,KAAK,IAAIjC,CAAC,GAAG,CAAb,EAAgBA,CAAC,GAAG+B,WAApB,EAAiC/B,CAAC,EAAlC,EAAsC;IACpC,IAAIkC,MAAJ;IAEAlB,UAAU,CAAC1B,MAAD,EAASA,MAAM,CAACC,OAAhB,EAAyBS,CAAzB,EAA6BmC,CAAD,IAAO;MAC3CD,MAAM,GAAGC,CAAT;IACD,CAFS,CAAV;;IAIA,OAAO7C,MAAM,CAAC8C,SAAd,EAAyB;MACvB,MAAM9C,MAAM,CAACuC,YAAP,CAAoBC,YAApB,EAAN;MAEAxC,MAAM,CAAC8C,SAAP,GAAmB,KAAnB;MACA,MAAMnC,IAAI,GAAGX,MAAM,CAACW,IAApB;MAEAA,IAAI;IACL;;IAEDgC,OAAO,CAAC5B,IAAR,CAAa6B,MAAb;EACD;;EAED,OAAO,IAAIG,uBAAJ,CAAqBJ,OAArB,CAAP;AACD;;eAEcR,iB;;AACfa,MAAM,CAACC,OAAP,GAAiBd,iBAAjB"}