summaryrefslogtreecommitdiff
path: root/node_modules/locutus/php/strings/sscanf.js
diff options
context:
space:
mode:
Diffstat (limited to 'node_modules/locutus/php/strings/sscanf.js')
-rw-r--r--node_modules/locutus/php/strings/sscanf.js268
1 files changed, 0 insertions, 268 deletions
diff --git a/node_modules/locutus/php/strings/sscanf.js b/node_modules/locutus/php/strings/sscanf.js
deleted file mode 100644
index 32fd585..0000000
--- a/node_modules/locutus/php/strings/sscanf.js
+++ /dev/null
@@ -1,268 +0,0 @@
-'use strict';
-
-module.exports = function sscanf(str, format) {
- // discuss at: http://locutus.io/php/sscanf/
- // original by: Brett Zamir (http://brett-zamir.me)
- // example 1: sscanf('SN/2350001', 'SN/%d')
- // returns 1: [2350001]
- // example 2: var myVar = {}
- // example 2: sscanf('SN/2350001', 'SN/%d', myVar)
- // example 2: var $result = myVar.value
- // returns 2: 2350001
- // example 3: sscanf("10--20", "%2$d--%1$d") // Must escape '$' in PHP, but not JS
- // returns 3: [20, 10]
-
- var retArr = [];
- var _NWS = /\S/;
- var args = arguments;
- var digit;
-
- var _setExtraConversionSpecs = function _setExtraConversionSpecs(offset) {
- // Since a mismatched character sets us off track from future
- // legitimate finds, we just scan
- // to the end for any other conversion specifications (besides a percent literal),
- // setting them to null
- // sscanf seems to disallow all conversion specification components (of sprintf)
- // except for type specifiers
- // Do not allow % in last char. class
- // var matches = format.match(/%[+-]?([ 0]|'.)?-?\d*(\.\d+)?[bcdeufFosxX]/g);
- // Do not allow % in last char. class:
- var matches = format.slice(offset).match(/%[cdeEufgosxX]/g);
- // b, F,G give errors in PHP, but 'g', though also disallowed, doesn't
- if (matches) {
- var lgth = matches.length;
- while (lgth--) {
- retArr.push(null);
- }
- }
- return _finish();
- };
-
- var _finish = function _finish() {
- if (args.length === 2) {
- return retArr;
- }
- for (var i = 0; i < retArr.length; ++i) {
- args[i + 2].value = retArr[i];
- }
- return i;
- };
-
- var _addNext = function _addNext(j, regex, cb) {
- if (assign) {
- var remaining = str.slice(j);
- var check = width ? remaining.substr(0, width) : remaining;
- var match = regex.exec(check);
- // @todo: Make this more readable
- var key = digit !== undefined ? digit : retArr.length;
- var testNull = retArr[key] = match ? cb ? cb.apply(null, match) : match[0] : null;
- if (testNull === null) {
- throw new Error('No match in string');
- }
- return j + match[0].length;
- }
- return j;
- };
-
- if (arguments.length < 2) {
- throw new Error('Not enough arguments passed to sscanf');
- }
-
- // PROCESS
- for (var i = 0, j = 0; i < format.length; i++) {
- var width = 0;
- var assign = true;
-
- if (format.charAt(i) === '%') {
- if (format.charAt(i + 1) === '%') {
- if (str.charAt(j) === '%') {
- // a matched percent literal
- // skip beyond duplicated percent
- ++i;
- ++j;
- continue;
- }
- // Format indicated a percent literal, but not actually present
- return _setExtraConversionSpecs(i + 2);
- }
-
- // CHARACTER FOLLOWING PERCENT IS NOT A PERCENT
-
- // We need 'g' set to get lastIndex
- var prePattern = new RegExp('^(?:(\\d+)\\$)?(\\*)?(\\d*)([hlL]?)', 'g');
-
- var preConvs = prePattern.exec(format.slice(i + 1));
-
- var tmpDigit = digit;
- if (tmpDigit && preConvs[1] === undefined) {
- var msg = 'All groups in sscanf() must be expressed as numeric if ';
- msg += 'any have already been used';
- throw new Error(msg);
- }
- digit = preConvs[1] ? parseInt(preConvs[1], 10) - 1 : undefined;
-
- assign = !preConvs[2];
- width = parseInt(preConvs[3], 10);
- var sizeCode = preConvs[4];
- i += prePattern.lastIndex;
-
- // @todo: Does PHP do anything with these? Seems not to matter
- if (sizeCode) {
- // This would need to be processed later
- switch (sizeCode) {
- case 'h':
- case 'l':
- case 'L':
- // Treats subsequent as short int (for d,i,n) or unsigned short int (for o,u,x)
- // Treats subsequent as long int (for d,i,n), or unsigned long int (for o,u,x);
- // or as double (for e,f,g) instead of float or wchar_t instead of char
- // Treats subsequent as long double (for e,f,g)
- break;
- default:
- throw new Error('Unexpected size specifier in sscanf()!');
- }
- }
- // PROCESS CHARACTER
- try {
- // For detailed explanations, see http://web.archive.org/web/20031128125047/http://www.uwm.edu/cgi-bin/IMT/wwwman?topic=scanf%283%29&msection=
- // Also http://www.mathworks.com/access/helpdesk/help/techdoc/ref/sscanf.html
- // p, S, C arguments in C function not available
- // DOCUMENTED UNDER SSCANF
- switch (format.charAt(i + 1)) {
- case 'F':
- // Not supported in PHP sscanf; the argument is treated as a float, and
- // presented as a floating-point number (non-locale aware)
- // sscanf doesn't support locales, so no need for two (see %f)
- break;
- case 'g':
- // Not supported in PHP sscanf; shorter of %e and %f
- // Irrelevant to input conversion
- break;
- case 'G':
- // Not supported in PHP sscanf; shorter of %E and %f
- // Irrelevant to input conversion
- break;
- case 'b':
- // Not supported in PHP sscanf; the argument is treated as an integer,
- // and presented as a binary number
- // Not supported - couldn't distinguish from other integers
- break;
- case 'i':
- // Integer with base detection (Equivalent of 'd', but base 0 instead of 10)
- var pattern = /([+-])?(?:(?:0x([\da-fA-F]+))|(?:0([0-7]+))|(\d+))/;
- j = _addNext(j, pattern, function (num, sign, hex, oct, dec) {
- return hex ? parseInt(num, 16) : oct ? parseInt(num, 8) : parseInt(num, 10);
- });
- break;
- case 'n':
- // Number of characters processed so far
- retArr[digit !== undefined ? digit : retArr.length - 1] = j;
- break;
- // DOCUMENTED UNDER SPRINTF
- case 'c':
- // Get character; suppresses skipping over whitespace!
- // (but shouldn't be whitespace in format anyways, so no difference here)
- // Non-greedy match
- j = _addNext(j, new RegExp('.{1,' + (width || 1) + '}'));
- break;
- case 'D':
- case 'd':
- // sscanf documented decimal number; equivalent of 'd';
- // Optionally signed decimal integer
- j = _addNext(j, /([+-])?(?:0*)(\d+)/, function (num, sign, dec) {
- // Ignores initial zeroes, unlike %i and parseInt()
- var decInt = parseInt((sign || '') + dec, 10);
- if (decInt < 0) {
- // PHP also won't allow less than -2147483648
- // integer overflow with negative
- return decInt < -2147483648 ? -2147483648 : decInt;
- } else {
- // PHP also won't allow greater than -2147483647
- return decInt < 2147483647 ? decInt : 2147483647;
- }
- });
- break;
- case 'f':
- case 'E':
- case 'e':
- // Although sscanf doesn't support locales,
- // this is used instead of '%F'; seems to be same as %e
- // These don't discriminate here as both allow exponential float of either case
- j = _addNext(j, /([+-])?(?:0*)(\d*\.?\d*(?:[eE]?\d+)?)/, function (num, sign, dec) {
- if (dec === '.') {
- return null;
- }
- // Ignores initial zeroes, unlike %i and parseFloat()
- return parseFloat((sign || '') + dec);
- });
- break;
- case 'u':
- // unsigned decimal integer
- // We won't deal with integer overflows due to signs
- j = _addNext(j, /([+-])?(?:0*)(\d+)/, function (num, sign, dec) {
- // Ignores initial zeroes, unlike %i and parseInt()
- var decInt = parseInt(dec, 10);
- if (sign === '-') {
- // PHP also won't allow greater than 4294967295
- // integer overflow with negative
- return 4294967296 - decInt;
- } else {
- return decInt < 4294967295 ? decInt : 4294967295;
- }
- });
- break;
- case 'o':
- // Octal integer // @todo: add overflows as above?
- j = _addNext(j, /([+-])?(?:0([0-7]+))/, function (num, sign, oct) {
- return parseInt(num, 8);
- });
- break;
- case 's':
- // Greedy match
- j = _addNext(j, /\S+/);
- break;
- case 'X':
- case 'x':
- // Same as 'x'?
- // @todo: add overflows as above?
- // Initial 0x not necessary here
- j = _addNext(j, /([+-])?(?:(?:0x)?([\da-fA-F]+))/, function (num, sign, hex) {
- return parseInt(num, 16);
- });
- break;
- case '':
- // If no character left in expression
- throw new Error('Missing character after percent mark in sscanf() format argument');
- default:
- throw new Error('Unrecognized character after percent mark in sscanf() format argument');
- }
- } catch (e) {
- if (e === 'No match in string') {
- // Allow us to exit
- return _setExtraConversionSpecs(i + 2);
- }
- // Calculate skipping beyond initial percent too
- }
- ++i;
- } else if (format.charAt(i) !== str.charAt(j)) {
- // @todo: Double-check i whitespace ignored in string and/or formats
- _NWS.lastIndex = 0;
- if (_NWS.test(str.charAt(j)) || str.charAt(j) === '') {
- // Whitespace doesn't need to be an exact match)
- return _setExtraConversionSpecs(i + 1);
- } else {
- // Adjust strings when encounter non-matching whitespace,
- // so they align in future checks above
- // Ok to replace with j++;?
- str = str.slice(0, j) + str.slice(j + 1);
- i--;
- }
- } else {
- j++;
- }
- }
-
- // POST-PROCESSING
- return _finish();
-};
-//# sourceMappingURL=sscanf.js.map \ No newline at end of file