jsonrepair.js
653 lines
| 1 | import { JSONRepairError } from '../utils/JSONRepairError.js'; |
| 2 | import { codeAsterisk, codeBackslash, codeCloseParenthesis, codeClosingBrace, codeClosingBracket, codeColon, codeComma, codeDot, codeDoubleQuote, codeLowercaseE, codeMinus, codeNewline, codeOpeningBrace, codeOpeningBracket, codeOpenParenthesis, codePlus, codeSemicolon, codeSlash, codeUppercaseE, endsWithCommaOrNewline, insertBeforeLastWhitespace, isControlCharacter, isDelimiter, isDelimiterExceptSlash, isDigit, isDoubleQuote, isDoubleQuoteLike, isFunctionName, isHex, isQuote, isSingleQuote, isSingleQuoteLike, isSpecialWhitespace, isStartOfValue, isValidStringCharacter, isWhitespace, removeAtIndex, stripLastOccurrence } from '../utils/stringUtils.js'; |
| 3 | const controlCharacters = { |
| 4 | '\b': '\\b', |
| 5 | '\f': '\\f', |
| 6 | '\n': '\\n', |
| 7 | '\r': '\\r', |
| 8 | '\t': '\\t' |
| 9 | }; |
| 10 | |
| 11 | // map with all escape characters |
| 12 | const escapeCharacters = { |
| 13 | '"': '"', |
| 14 | '\\': '\\', |
| 15 | '/': '/', |
| 16 | b: '\b', |
| 17 | f: '\f', |
| 18 | n: '\n', |
| 19 | r: '\r', |
| 20 | t: '\t' |
| 21 | // note that \u is handled separately in parseString() |
| 22 | }; |
| 23 | |
| 24 | /** |
| 25 | * Repair a string containing an invalid JSON document. |
| 26 | * For example changes JavaScript notation into JSON notation. |
| 27 | * |
| 28 | * Example: |
| 29 | * |
| 30 | * try { |
| 31 | * const json = "{name: 'John'}" |
| 32 | * const repaired = jsonrepair(json) |
| 33 | * console.log(repaired) |
| 34 | * // '{"name": "John"}' |
| 35 | * } catch (err) { |
| 36 | * console.error(err) |
| 37 | * } |
| 38 | * |
| 39 | */ |
| 40 | export function jsonrepair(text) { |
| 41 | let i = 0; // current index in text |
| 42 | let output = ''; // generated output |
| 43 | |
| 44 | const processed = parseValue(); |
| 45 | if (!processed) { |
| 46 | throwUnexpectedEnd(); |
| 47 | } |
| 48 | const processedComma = parseCharacter(codeComma); |
| 49 | if (processedComma) { |
| 50 | parseWhitespaceAndSkipComments(); |
| 51 | } |
| 52 | if (isStartOfValue(text[i]) && endsWithCommaOrNewline(output)) { |
| 53 | // start of a new value after end of the root level object: looks like |
| 54 | // newline delimited JSON -> turn into a root level array |
| 55 | if (!processedComma) { |
| 56 | // repair missing comma |
| 57 | output = insertBeforeLastWhitespace(output, ','); |
| 58 | } |
| 59 | parseNewlineDelimitedJSON(); |
| 60 | } else if (processedComma) { |
| 61 | // repair: remove trailing comma |
| 62 | output = stripLastOccurrence(output, ','); |
| 63 | } |
| 64 | |
| 65 | // repair redundant end quotes |
| 66 | while (text.charCodeAt(i) === codeClosingBrace || text.charCodeAt(i) === codeClosingBracket) { |
| 67 | i++; |
| 68 | parseWhitespaceAndSkipComments(); |
| 69 | } |
| 70 | if (i >= text.length) { |
| 71 | // reached the end of the document properly |
| 72 | return output; |
| 73 | } |
| 74 | throwUnexpectedCharacter(); |
| 75 | function parseValue() { |
| 76 | parseWhitespaceAndSkipComments(); |
| 77 | const processed = parseObject() || parseArray() || parseString() || parseNumber() || parseKeywords() || parseUnquotedString(); |
| 78 | parseWhitespaceAndSkipComments(); |
| 79 | return processed; |
| 80 | } |
| 81 | function parseWhitespaceAndSkipComments() { |
| 82 | const start = i; |
| 83 | let changed = parseWhitespace(); |
| 84 | do { |
| 85 | changed = parseComment(); |
| 86 | if (changed) { |
| 87 | changed = parseWhitespace(); |
| 88 | } |
| 89 | } while (changed); |
| 90 | return i > start; |
| 91 | } |
| 92 | function parseWhitespace() { |
| 93 | let whitespace = ''; |
| 94 | let normal; |
| 95 | while ((normal = isWhitespace(text.charCodeAt(i))) || isSpecialWhitespace(text.charCodeAt(i))) { |
| 96 | if (normal) { |
| 97 | whitespace += text[i]; |
| 98 | } else { |
| 99 | // repair special whitespace |
| 100 | whitespace += ' '; |
| 101 | } |
| 102 | i++; |
| 103 | } |
| 104 | if (whitespace.length > 0) { |
| 105 | output += whitespace; |
| 106 | return true; |
| 107 | } |
| 108 | return false; |
| 109 | } |
| 110 | function parseComment() { |
| 111 | // find a block comment '/* ... */' |
| 112 | if (text.charCodeAt(i) === codeSlash && text.charCodeAt(i + 1) === codeAsterisk) { |
| 113 | // repair block comment by skipping it |
| 114 | while (i < text.length && !atEndOfBlockComment(text, i)) { |
| 115 | i++; |
| 116 | } |
| 117 | i += 2; |
| 118 | return true; |
| 119 | } |
| 120 | |
| 121 | // find a line comment '// ...' |
| 122 | if (text.charCodeAt(i) === codeSlash && text.charCodeAt(i + 1) === codeSlash) { |
| 123 | // repair line comment by skipping it |
| 124 | while (i < text.length && text.charCodeAt(i) !== codeNewline) { |
| 125 | i++; |
| 126 | } |
| 127 | return true; |
| 128 | } |
| 129 | return false; |
| 130 | } |
| 131 | function parseCharacter(code) { |
| 132 | if (text.charCodeAt(i) === code) { |
| 133 | output += text[i]; |
| 134 | i++; |
| 135 | return true; |
| 136 | } |
| 137 | return false; |
| 138 | } |
| 139 | function skipCharacter(code) { |
| 140 | if (text.charCodeAt(i) === code) { |
| 141 | i++; |
| 142 | return true; |
| 143 | } |
| 144 | return false; |
| 145 | } |
| 146 | function skipEscapeCharacter() { |
| 147 | return skipCharacter(codeBackslash); |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Skip ellipsis like "[1,2,3,...]" or "[1,2,3,...,9]" or "[...,7,8,9]" |
| 152 | * or a similar construct in objects. |
| 153 | */ |
| 154 | function skipEllipsis() { |
| 155 | parseWhitespaceAndSkipComments(); |
| 156 | if (text.charCodeAt(i) === codeDot && text.charCodeAt(i + 1) === codeDot && text.charCodeAt(i + 2) === codeDot) { |
| 157 | // repair: remove the ellipsis (three dots) and optionally a comma |
| 158 | i += 3; |
| 159 | parseWhitespaceAndSkipComments(); |
| 160 | skipCharacter(codeComma); |
| 161 | return true; |
| 162 | } |
| 163 | return false; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Parse an object like '{"key": "value"}' |
| 168 | */ |
| 169 | function parseObject() { |
| 170 | if (text.charCodeAt(i) === codeOpeningBrace) { |
| 171 | output += '{'; |
| 172 | i++; |
| 173 | parseWhitespaceAndSkipComments(); |
| 174 | |
| 175 | // repair: skip leading comma like in {, message: "hi"} |
| 176 | if (skipCharacter(codeComma)) { |
| 177 | parseWhitespaceAndSkipComments(); |
| 178 | } |
| 179 | let initial = true; |
| 180 | while (i < text.length && text.charCodeAt(i) !== codeClosingBrace) { |
| 181 | let processedComma; |
| 182 | if (!initial) { |
| 183 | processedComma = parseCharacter(codeComma); |
| 184 | if (!processedComma) { |
| 185 | // repair missing comma |
| 186 | output = insertBeforeLastWhitespace(output, ','); |
| 187 | } |
| 188 | parseWhitespaceAndSkipComments(); |
| 189 | } else { |
| 190 | processedComma = true; |
| 191 | initial = false; |
| 192 | } |
| 193 | skipEllipsis(); |
| 194 | const processedKey = parseString() || parseUnquotedString(); |
| 195 | if (!processedKey) { |
| 196 | if (text.charCodeAt(i) === codeClosingBrace || text.charCodeAt(i) === codeOpeningBrace || text.charCodeAt(i) === codeClosingBracket || text.charCodeAt(i) === codeOpeningBracket || text[i] === undefined) { |
| 197 | // repair trailing comma |
| 198 | output = stripLastOccurrence(output, ','); |
| 199 | } else { |
| 200 | throwObjectKeyExpected(); |
| 201 | } |
| 202 | break; |
| 203 | } |
| 204 | parseWhitespaceAndSkipComments(); |
| 205 | const processedColon = parseCharacter(codeColon); |
| 206 | const truncatedText = i >= text.length; |
| 207 | if (!processedColon) { |
| 208 | if (isStartOfValue(text[i]) || truncatedText) { |
| 209 | // repair missing colon |
| 210 | output = insertBeforeLastWhitespace(output, ':'); |
| 211 | } else { |
| 212 | throwColonExpected(); |
| 213 | } |
| 214 | } |
| 215 | const processedValue = parseValue(); |
| 216 | if (!processedValue) { |
| 217 | if (processedColon || truncatedText) { |
| 218 | // repair missing object value |
| 219 | output += 'null'; |
| 220 | } else { |
| 221 | throwColonExpected(); |
| 222 | } |
| 223 | } |
| 224 | } |
| 225 | if (text.charCodeAt(i) === codeClosingBrace) { |
| 226 | output += '}'; |
| 227 | i++; |
| 228 | } else { |
| 229 | // repair missing end bracket |
| 230 | output = insertBeforeLastWhitespace(output, '}'); |
| 231 | } |
| 232 | return true; |
| 233 | } |
| 234 | return false; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Parse an array like '["item1", "item2", ...]' |
| 239 | */ |
| 240 | function parseArray() { |
| 241 | if (text.charCodeAt(i) === codeOpeningBracket) { |
| 242 | output += '['; |
| 243 | i++; |
| 244 | parseWhitespaceAndSkipComments(); |
| 245 | |
| 246 | // repair: skip leading comma like in [,1,2,3] |
| 247 | if (skipCharacter(codeComma)) { |
| 248 | parseWhitespaceAndSkipComments(); |
| 249 | } |
| 250 | let initial = true; |
| 251 | while (i < text.length && text.charCodeAt(i) !== codeClosingBracket) { |
| 252 | if (!initial) { |
| 253 | const processedComma = parseCharacter(codeComma); |
| 254 | if (!processedComma) { |
| 255 | // repair missing comma |
| 256 | output = insertBeforeLastWhitespace(output, ','); |
| 257 | } |
| 258 | } else { |
| 259 | initial = false; |
| 260 | } |
| 261 | skipEllipsis(); |
| 262 | const processedValue = parseValue(); |
| 263 | if (!processedValue) { |
| 264 | // repair trailing comma |
| 265 | output = stripLastOccurrence(output, ','); |
| 266 | break; |
| 267 | } |
| 268 | } |
| 269 | if (text.charCodeAt(i) === codeClosingBracket) { |
| 270 | output += ']'; |
| 271 | i++; |
| 272 | } else { |
| 273 | // repair missing closing array bracket |
| 274 | output = insertBeforeLastWhitespace(output, ']'); |
| 275 | } |
| 276 | return true; |
| 277 | } |
| 278 | return false; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Parse and repair Newline Delimited JSON (NDJSON): |
| 283 | * multiple JSON objects separated by a newline character |
| 284 | */ |
| 285 | function parseNewlineDelimitedJSON() { |
| 286 | // repair NDJSON |
| 287 | let initial = true; |
| 288 | let processedValue = true; |
| 289 | while (processedValue) { |
| 290 | if (!initial) { |
| 291 | // parse optional comma, insert when missing |
| 292 | const processedComma = parseCharacter(codeComma); |
| 293 | if (!processedComma) { |
| 294 | // repair: add missing comma |
| 295 | output = insertBeforeLastWhitespace(output, ','); |
| 296 | } |
| 297 | } else { |
| 298 | initial = false; |
| 299 | } |
| 300 | processedValue = parseValue(); |
| 301 | } |
| 302 | if (!processedValue) { |
| 303 | // repair: remove trailing comma |
| 304 | output = stripLastOccurrence(output, ','); |
| 305 | } |
| 306 | |
| 307 | // repair: wrap the output inside array brackets |
| 308 | output = "[\n".concat(output, "\n]"); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * Parse a string enclosed by double quotes "...". Can contain escaped quotes |
| 313 | * Repair strings enclosed in single quotes or special quotes |
| 314 | * Repair an escaped string |
| 315 | * |
| 316 | * The function can run in two stages: |
| 317 | * - First, it assumes the string has a valid end quote |
| 318 | * - If it turns out that the string does not have a valid end quote followed |
| 319 | * by a delimiter (which should be the case), the function runs again in a |
| 320 | * more conservative way, stopping the string at the first next delimiter |
| 321 | * and fixing the string by inserting a quote there. |
| 322 | */ |
| 323 | function parseString() { |
| 324 | let stopAtDelimiter = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false; |
| 325 | let skipEscapeChars = text.charCodeAt(i) === codeBackslash; |
| 326 | if (skipEscapeChars) { |
| 327 | // repair: remove the first escape character |
| 328 | i++; |
| 329 | skipEscapeChars = true; |
| 330 | } |
| 331 | if (isQuote(text.charCodeAt(i))) { |
| 332 | // double quotes are correct JSON, |
| 333 | // single quotes come from JavaScript for example, we assume it will have a correct single end quote too |
| 334 | // otherwise, we will match any double-quote-like start with a double-quote-like end, |
| 335 | // or any single-quote-like start with a single-quote-like end |
| 336 | const isEndQuote = isDoubleQuote(text.charCodeAt(i)) ? isDoubleQuote : isSingleQuote(text.charCodeAt(i)) ? isSingleQuote : isSingleQuoteLike(text.charCodeAt(i)) ? isSingleQuoteLike : isDoubleQuoteLike; |
| 337 | const iBefore = i; |
| 338 | const oBefore = output.length; |
| 339 | let str = '"'; |
| 340 | i++; |
| 341 | while (true) { |
| 342 | if (i >= text.length) { |
| 343 | // end of text, we are missing an end quote |
| 344 | |
| 345 | const iPrev = prevNonWhitespaceIndex(i - 1); |
| 346 | if (!stopAtDelimiter && isDelimiter(text.charAt(iPrev))) { |
| 347 | // if the text ends with a delimiter, like ["hello], |
| 348 | // so the missing end quote should be inserted before this delimiter |
| 349 | // retry parsing the string, stopping at the first next delimiter |
| 350 | i = iBefore; |
| 351 | output = output.substring(0, oBefore); |
| 352 | return parseString(true); |
| 353 | } |
| 354 | |
| 355 | // repair missing quote |
| 356 | str = insertBeforeLastWhitespace(str, '"'); |
| 357 | output += str; |
| 358 | return true; |
| 359 | } else if (isEndQuote(text.charCodeAt(i))) { |
| 360 | // end quote |
| 361 | // let us check what is before and after the quote to verify whether this is a legit end quote |
| 362 | const iQuote = i; |
| 363 | const oQuote = str.length; |
| 364 | str += '"'; |
| 365 | i++; |
| 366 | output += str; |
| 367 | parseWhitespaceAndSkipComments(); |
| 368 | if (stopAtDelimiter || i >= text.length || isDelimiter(text.charAt(i)) || isQuote(text.charCodeAt(i)) || isDigit(text.charCodeAt(i))) { |
| 369 | // The quote is followed by the end of the text, a delimiter, or a next value |
| 370 | // so the quote is indeed the end of the string |
| 371 | parseConcatenatedString(); |
| 372 | return true; |
| 373 | } |
| 374 | if (isDelimiter(text.charAt(prevNonWhitespaceIndex(iQuote - 1)))) { |
| 375 | // This is not the right end quote: it is preceded by a delimiter, |
| 376 | // and NOT followed by a delimiter. So, there is an end quote missing |
| 377 | // parse the string again and then stop at the first next delimiter |
| 378 | i = iBefore; |
| 379 | output = output.substring(0, oBefore); |
| 380 | return parseString(true); |
| 381 | } |
| 382 | |
| 383 | // revert to right after the quote but before any whitespace, and continue parsing the string |
| 384 | output = output.substring(0, oBefore); |
| 385 | i = iQuote + 1; |
| 386 | |
| 387 | // repair unescaped quote |
| 388 | str = str.substring(0, oQuote) + '\\' + str.substring(oQuote); |
| 389 | } else if (stopAtDelimiter && isDelimiter(text[i])) { |
| 390 | // we're in the mode to stop the string at the first delimiter |
| 391 | // because there is an end quote missing |
| 392 | |
| 393 | // repair missing quote |
| 394 | str = insertBeforeLastWhitespace(str, '"'); |
| 395 | output += str; |
| 396 | parseConcatenatedString(); |
| 397 | return true; |
| 398 | } else if (text.charCodeAt(i) === codeBackslash) { |
| 399 | // handle escaped content like \n or \u2605 |
| 400 | const char = text.charAt(i + 1); |
| 401 | const escapeChar = escapeCharacters[char]; |
| 402 | if (escapeChar !== undefined) { |
| 403 | str += text.slice(i, i + 2); |
| 404 | i += 2; |
| 405 | } else if (char === 'u') { |
| 406 | let j = 2; |
| 407 | while (j < 6 && isHex(text.charCodeAt(i + j))) { |
| 408 | j++; |
| 409 | } |
| 410 | if (j === 6) { |
| 411 | str += text.slice(i, i + 6); |
| 412 | i += 6; |
| 413 | } else if (i + j >= text.length) { |
| 414 | // repair invalid or truncated unicode char at the end of the text |
| 415 | // by removing the unicode char and ending the string here |
| 416 | i = text.length; |
| 417 | } else { |
| 418 | throwInvalidUnicodeCharacter(); |
| 419 | } |
| 420 | } else { |
| 421 | // repair invalid escape character: remove it |
| 422 | str += char; |
| 423 | i += 2; |
| 424 | } |
| 425 | } else { |
| 426 | // handle regular characters |
| 427 | const char = text.charAt(i); |
| 428 | const code = text.charCodeAt(i); |
| 429 | if (code === codeDoubleQuote && text.charCodeAt(i - 1) !== codeBackslash) { |
| 430 | // repair unescaped double quote |
| 431 | str += '\\' + char; |
| 432 | i++; |
| 433 | } else if (isControlCharacter(code)) { |
| 434 | // unescaped control character |
| 435 | str += controlCharacters[char]; |
| 436 | i++; |
| 437 | } else { |
| 438 | if (!isValidStringCharacter(code)) { |
| 439 | throwInvalidCharacter(char); |
| 440 | } |
| 441 | str += char; |
| 442 | i++; |
| 443 | } |
| 444 | } |
| 445 | if (skipEscapeChars) { |
| 446 | // repair: skipped escape character (nothing to do) |
| 447 | skipEscapeCharacter(); |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | return false; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Repair concatenated strings like "hello" + "world", change this into "helloworld" |
| 456 | */ |
| 457 | function parseConcatenatedString() { |
| 458 | let processed = false; |
| 459 | parseWhitespaceAndSkipComments(); |
| 460 | while (text.charCodeAt(i) === codePlus) { |
| 461 | processed = true; |
| 462 | i++; |
| 463 | parseWhitespaceAndSkipComments(); |
| 464 | |
| 465 | // repair: remove the end quote of the first string |
| 466 | output = stripLastOccurrence(output, '"', true); |
| 467 | const start = output.length; |
| 468 | const parsedStr = parseString(); |
| 469 | if (parsedStr) { |
| 470 | // repair: remove the start quote of the second string |
| 471 | output = removeAtIndex(output, start, 1); |
| 472 | } else { |
| 473 | // repair: remove the + because it is not followed by a string |
| 474 | output = insertBeforeLastWhitespace(output, '"'); |
| 475 | } |
| 476 | } |
| 477 | return processed; |
| 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Parse a number like 2.4 or 2.4e6 |
| 482 | */ |
| 483 | function parseNumber() { |
| 484 | const start = i; |
| 485 | if (text.charCodeAt(i) === codeMinus) { |
| 486 | i++; |
| 487 | if (atEndOfNumber()) { |
| 488 | repairNumberEndingWithNumericSymbol(start); |
| 489 | return true; |
| 490 | } |
| 491 | if (!isDigit(text.charCodeAt(i))) { |
| 492 | i = start; |
| 493 | return false; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | // Note that in JSON leading zeros like "00789" are not allowed. |
| 498 | // We will allow all leading zeros here though and at the end of parseNumber |
| 499 | // check against trailing zeros and repair that if needed. |
| 500 | // Leading zeros can have meaning, so we should not clear them. |
| 501 | while (isDigit(text.charCodeAt(i))) { |
| 502 | i++; |
| 503 | } |
| 504 | if (text.charCodeAt(i) === codeDot) { |
| 505 | i++; |
| 506 | if (atEndOfNumber()) { |
| 507 | repairNumberEndingWithNumericSymbol(start); |
| 508 | return true; |
| 509 | } |
| 510 | if (!isDigit(text.charCodeAt(i))) { |
| 511 | i = start; |
| 512 | return false; |
| 513 | } |
| 514 | while (isDigit(text.charCodeAt(i))) { |
| 515 | i++; |
| 516 | } |
| 517 | } |
| 518 | if (text.charCodeAt(i) === codeLowercaseE || text.charCodeAt(i) === codeUppercaseE) { |
| 519 | i++; |
| 520 | if (text.charCodeAt(i) === codeMinus || text.charCodeAt(i) === codePlus) { |
| 521 | i++; |
| 522 | } |
| 523 | if (atEndOfNumber()) { |
| 524 | repairNumberEndingWithNumericSymbol(start); |
| 525 | return true; |
| 526 | } |
| 527 | if (!isDigit(text.charCodeAt(i))) { |
| 528 | i = start; |
| 529 | return false; |
| 530 | } |
| 531 | while (isDigit(text.charCodeAt(i))) { |
| 532 | i++; |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | // if we're not at the end of the number by this point, allow this to be parsed as another type |
| 537 | if (!atEndOfNumber()) { |
| 538 | i = start; |
| 539 | return false; |
| 540 | } |
| 541 | if (i > start) { |
| 542 | // repair a number with leading zeros like "00789" |
| 543 | const num = text.slice(start, i); |
| 544 | const hasInvalidLeadingZero = /^0\d/.test(num); |
| 545 | output += hasInvalidLeadingZero ? "\"".concat(num, "\"") : num; |
| 546 | return true; |
| 547 | } |
| 548 | return false; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * Parse keywords true, false, null |
| 553 | * Repair Python keywords True, False, None |
| 554 | */ |
| 555 | function parseKeywords() { |
| 556 | return parseKeyword('true', 'true') || parseKeyword('false', 'false') || parseKeyword('null', 'null') || |
| 557 | // repair Python keywords True, False, None |
| 558 | parseKeyword('True', 'true') || parseKeyword('False', 'false') || parseKeyword('None', 'null'); |
| 559 | } |
| 560 | function parseKeyword(name, value) { |
| 561 | if (text.slice(i, i + name.length) === name) { |
| 562 | output += value; |
| 563 | i += name.length; |
| 564 | return true; |
| 565 | } |
| 566 | return false; |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * Repair an unquoted string by adding quotes around it |
| 571 | * Repair a MongoDB function call like NumberLong("2") |
| 572 | * Repair a JSONP function call like callback({...}); |
| 573 | */ |
| 574 | function parseUnquotedString() { |
| 575 | // note that the symbol can end with whitespaces: we stop at the next delimiter |
| 576 | // also, note that we allow strings to contain a slash / in order to support repairing regular expressions |
| 577 | const start = i; |
| 578 | while (i < text.length && !isDelimiterExceptSlash(text[i]) && !isQuote(text.charCodeAt(i))) { |
| 579 | i++; |
| 580 | } |
| 581 | if (i > start) { |
| 582 | if (text.charCodeAt(i) === codeOpenParenthesis && isFunctionName(text.slice(start, i).trim())) { |
| 583 | // repair a MongoDB function call like NumberLong("2") |
| 584 | // repair a JSONP function call like callback({...}); |
| 585 | i++; |
| 586 | parseValue(); |
| 587 | if (text.charCodeAt(i) === codeCloseParenthesis) { |
| 588 | // repair: skip close bracket of function call |
| 589 | i++; |
| 590 | if (text.charCodeAt(i) === codeSemicolon) { |
| 591 | // repair: skip semicolon after JSONP call |
| 592 | i++; |
| 593 | } |
| 594 | } |
| 595 | return true; |
| 596 | } else { |
| 597 | // repair unquoted string |
| 598 | // also, repair undefined into null |
| 599 | |
| 600 | // first, go back to prevent getting trailing whitespaces in the string |
| 601 | while (isWhitespace(text.charCodeAt(i - 1)) && i > 0) { |
| 602 | i--; |
| 603 | } |
| 604 | const symbol = text.slice(start, i); |
| 605 | output += symbol === 'undefined' ? 'null' : JSON.stringify(symbol); |
| 606 | if (text.charCodeAt(i) === codeDoubleQuote) { |
| 607 | // we had a missing start quote, but now we encountered the end quote, so we can skip that one |
| 608 | i++; |
| 609 | } |
| 610 | return true; |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | function prevNonWhitespaceIndex(start) { |
| 615 | let prev = start; |
| 616 | while (prev > 0 && isWhitespace(text.charCodeAt(prev))) { |
| 617 | prev--; |
| 618 | } |
| 619 | return prev; |
| 620 | } |
| 621 | function atEndOfNumber() { |
| 622 | return i >= text.length || isDelimiter(text[i]) || isWhitespace(text.charCodeAt(i)); |
| 623 | } |
| 624 | function repairNumberEndingWithNumericSymbol(start) { |
| 625 | // repair numbers cut off at the end |
| 626 | // this will only be called when we end after a '.', '-', or 'e' and does not |
| 627 | // change the number more than it needs to make it valid JSON |
| 628 | output += text.slice(start, i) + '0'; |
| 629 | } |
| 630 | function throwInvalidCharacter(char) { |
| 631 | throw new JSONRepairError('Invalid character ' + JSON.stringify(char), i); |
| 632 | } |
| 633 | function throwUnexpectedCharacter() { |
| 634 | throw new JSONRepairError('Unexpected character ' + JSON.stringify(text[i]), i); |
| 635 | } |
| 636 | function throwUnexpectedEnd() { |
| 637 | throw new JSONRepairError('Unexpected end of json string', text.length); |
| 638 | } |
| 639 | function throwObjectKeyExpected() { |
| 640 | throw new JSONRepairError('Object key expected', i); |
| 641 | } |
| 642 | function throwColonExpected() { |
| 643 | throw new JSONRepairError('Colon expected', i); |
| 644 | } |
| 645 | function throwInvalidUnicodeCharacter() { |
| 646 | const chars = text.slice(i, i + 6); |
| 647 | throw new JSONRepairError("Invalid unicode character \"".concat(chars, "\""), i); |
| 648 | } |
| 649 | } |
| 650 | function atEndOfBlockComment(text, i) { |
| 651 | return text[i] === '*' && text[i + 1] === '/'; |
| 652 | } |
| 653 | //# sourceMappingURL=jsonrepair.js.map |