From b56cb11bb745c34455b7159980be38b81d8c115f Mon Sep 17 00:00:00 2001 From: Ted Humphrey Date: Fri, 12 Jun 2020 03:17:35 -0400 Subject: Address Manage Dictionary issues A variety of bugs are addressed. See JIRA. Issue-ID: CLAMP-849 Change-Id: I620c1ec774fdcec484f40fc638551960a98973c8 Signed-off-by: Ted Humphrey --- ui-react/src/utils/CsvToJson.js | 204 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 ui-react/src/utils/CsvToJson.js (limited to 'ui-react/src/utils/CsvToJson.js') diff --git a/ui-react/src/utils/CsvToJson.js b/ui-react/src/utils/CsvToJson.js new file mode 100644 index 000000000..5ec19c9e2 --- /dev/null +++ b/ui-react/src/utils/CsvToJson.js @@ -0,0 +1,204 @@ +/*- + * ============LICENSE_START======================================================= + * ONAP CLAMP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END============================================ + * =================================================================== + * + */ + +export default function CsvToJson(rawCsvData, delimiter, internalDelimiter, csvHeaderNames, jsonKeyNames, mandatory) { + + let printDictKeys = ''; + let result = { jsonObjArray: [], errorMessages: '' }; + + // Validate that all parallel arrays passed in have same number of elements; + // this would be a developer error. + + let checkLength = csvHeaderNames.length; + + if (checkLength !== jsonKeyNames.length || checkLength !== mandatory.length) { + result.errorMessages = 'interanl error: csvHeaderNames, jsonKeyNames, and mandatory arrays parameters are not the same length'; + return result; + } + + if (checkLength < 1) { + result.errorMessages = 'interanl error: csvHeaderNames, jsonKeyNames, and mandatory arrays have no entries'; + return result; + } + + // Make a nice string to print in the error case to tell user what is the + // required heaer row format + + for (let i=0; i < csvHeaderNames.length; ++i) { + if (i === 0) { + printDictKeys = csvHeaderNames[i]; + } else { + printDictKeys += ',' + csvHeaderNames[i]; + } + } + + let dictElems = rawCsvData.split('\n'); + let numColumns = 0; + let filteredDictElems = []; + + // The task of the following loop is to convert raw CSV rows into easily parseable + // and streamlined versions of the rows with an internalDelimiter replacing the standard + // comma; it is presumed (and checked) that the internalDelimiter cannot exist as a valid + // sequence of characters in the user's data. + + // This conversion process also strips leading and trailing whitespace from each row, + // discards empty rows, correctly interprets and removes all double quotes that programs like + // Excel use to support user columns that contain special characters, most notably, the comma + // delimiter. A double-quote that is contained within a double-quoted column value + // must appear in this raw data as a sequence of two double quotes. Furthermore, any column + // value in the raw CSV data that does not contain a delimiter may or may not be enclosed in + // double quotes. It is the Excel convention to not use double qoutes unless necessary, and + // there is no reasonable way to tell Excel to surround every column value with double quotes. + // Any files that were directly "exported" by CLAMP itself from the Managing Dictionaries + // capability, surround all columns with double quotes. + + for (let i = 0; i < dictElems.length; i++) { + + let oneRow = dictElems[i].trim(); + let j = 0; + let inQuote = false + let nextChar = undefined; + let prevChar = null; + + + if (oneRow === '') { + continue; // Skip blank rows + } else if (oneRow.indexOf(internalDelimiter) !== -1) { + result.errorMessages += '\nRow #' + i + ' contains illegal sequence of characters (' + internalDelimiter + ')'; + break; + } else { + nextChar = oneRow[1]; + } + + let newStr = ''; + numColumns = 1; + + // This "while loop" performs the very meticulous task of removing double quotes that + // are used by Excel to encase special characters as user string value data, + // and manages to correctly identify columns that are defined with or without + // double quotes and to process the comma delimiter correctly when encountered + // as a user value within a column. Such a column would have to be encased in + // double quotes; a comma found outside double quotes IS a delimiter. + + while (j < oneRow.length) { + if (oneRow[j] === '"') { + if (inQuote === false) { + if (prevChar !== delimiter && prevChar !== null) { + result.errorMessages += '\nMismatched double quotes or illegal whitespace around delimiter at row #' + (i + 1) + ' near column #' + numColumns; + break; + } else { + inQuote = true; + } + } else { + if (nextChar === '"') { + newStr += '"'; + ++j; + } else if ((nextChar !== delimiter) && (nextChar !== undefined)) { + result.errorMessages += '\nRow #' + (i + 1) + ' is badly formatted at column #' + numColumns + '. Perhaps an unescaped double quote.'; + break; + } else if (nextChar === delimiter) { + ++numColumns; + inQuote = false; + newStr += internalDelimiter; + prevChar = delimiter; + j += 2; + nextChar = oneRow[j+1]; + continue; + } else { + ++numColumns; + inQuote = false; + break; + } + } + } else { + if (oneRow[j] === delimiter && inQuote === false) { + newStr += internalDelimiter; + ++numColumns; + } else { + newStr += oneRow[j]; + } + } + prevChar = oneRow[j]; + ++j; + nextChar = oneRow[j+1]; // can result in undefined at the end + } + + if (result.errorMessages === '' && inQuote !== false) { + result.errorMessages += '\nMismatched double quotes at row #' + (i + 1); + break; + } else if (result.errorMessages === '' && numColumns < jsonKeyNames.length) { + result.errorMessages += '\nNot enough columns (' + jsonKeyNames.length + ') at row #' + (i + 1); + break; + } + + filteredDictElems.push(newStr); + } + + if (result.errorMessages !== '') { + return result; + } + + // Perform further checks on data that is now in JSON form + if (filteredDictElems.length < 2) { + result.errorMessages += '\nNot enough row data found in import file. Need at least a header row and one row of data'; + return result; + } + + // Now that we have something reliably parsed into sanitized columns lets run some checks + // and convert it all into an array of JSON objects to push to the back end if all the + // checks pass. + + let headers = filteredDictElems[0].split(internalDelimiter); + + // check that headers are included in proper order + for (let i=0; i < jsonKeyNames.length; ++i) { + if (csvHeaderNames[i] !== headers[i]) { + result.errorMessages += 'Row 1 header key at column #' + (i + 1) + ' is a mismatch. Expected row header must contain at least:\n' + printDictKeys; + return result; + } + } + + // Convert the ASCII rows of data into an array of JSON obects that omit the header + // row which is not sent to the back end. + + for (let i = 1; i < filteredDictElems.length; i++) { + let data = filteredDictElems[i].split(internalDelimiter); + let obj = {}; + for (let j = 0; j < data.length && j < jsonKeyNames.length; j++) { + let value = data[j].trim(); + if (mandatory[j] === true && value === '') { + result.errorMessages += '\n' + csvHeaderNames[j] + ' at row #' + (i+1) + ' is empty but requires a value.'; + } + obj[jsonKeyNames[j]] = value; + } + result.jsonObjArray.push(obj); + } + + if (result.errorMessages !== '') { + // If we have errors, return empty parse result even though some things + // may have parsed properly. We do not want to encourage the caller + // to think the data is good for use. + result.jsonObjArray = []; + } + + return result; +} -- cgit 1.2.3-korg