floatify.js ➔ ... ➔ parseMixedSeparators - Code Metrics - Inspection of "decreased complexity of parse: extracted parseMixe..." - pocketrocket/floatify - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — decomplexify (3ec600)

by Oliver

created 2019-03-01 03:19 UTC

floatify.js ➔ ... ➔ parseMixedSeparators A

↳ Parent: floatify.js ➔ ... ➔ parse

Complexity

Conditions	5
Paths	5

Size

Total Lines	29
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	5

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	5
eloc	12
c	1
b	0
f	0
nc	5
nop	0
dl	0
loc	29
ccs	11
cts	11
cp	1
crap	5
rs	9.3333

'use strict';

var floatify = function floatify(str) {
  var toFloatFormat = function toFloatFormat(str, ts, ds) {
    var string = str;
    var decimalSeparator = ds || '';

    string = string.split(ts || '').join('');
    if (decimalSeparator !== '') {
      string = string.split(decimalSeparator).join('.');
    }

    return parseFloat(string);
  };

  var parseParts = function parseParts(str, ele, count) {
    var string = str;
    var element = ele;
    var parts = string.split(element);

    function parseMidPart() {
      if (current.length !== 3) {
        return Number.NaN;
      }

      if (left.length > 3) {
        return Number.NaN;
      }

      // no decision, continue
      return null;
    }

    function parseEndPart() {
      if ((leftVal === 0 || isNaN(leftVal) || left.length > 3)) {
        return toFloatFormat(string, '', element);
      }

      if (current.length === 3) {
        return toFloatFormat(string, element, '');
      }

      if (count === 1) {
        return toFloatFormat(string, '', element);
      }

      return Number.NaN;
    }

    for (var i = 1; i < parts.length; i++) {
      var current = parts[i];
      var left = parts[i - 1];
      var leftVal = parseInt(left, 10);
      var isLast = parts.length - 1 === i;
      var parseResult;

      if (!isLast) {
        parseResult = parseMidPart();
      } else {
        parseResult = parseEndPart();
      }

      if (parseResult !== null) {
        break;
      }
    }
    return parseResult || Number.NaN;
  };

  var parse = function parse(str) {
    var string = str;
    var spacePos;
    var spaceSplit;
    var spaceCount;
    var dotPos;
    var commaPos;
    var lDotPos;
    var lCommaPos;
    var dotCount;
    var commaCount;

    function parseMixedSeparators() {
      // format is using dot and comma

      // last dot position
      lDotPos = string.lastIndexOf('.');
      // last comma position
      lCommaPos = string.lastIndexOf(',');

      // order of 1st dot -> comma must be same as last dot -> comma
      // 123.123.123,123 -> ok 123.123,123.123 -> not ok
      if (Math.sign(dotPos - commaPos) !== Math.sign(lDotPos - lCommaPos)) {
        return Number.NaN;
      }

      // check positions to guess the thousands separator
      if (dotPos > commaPos) {
        if (dotCount > 1) {
          return Number.NaN;
        }
        // best guess: . is thousands separator and , is decimal point
        return toFloatFormat(string, ',', '.');
      }

      if (commaCount > 1) {
        return Number.NaN;
      }
      // best guess: , is thousands separator and . is decimal point
      return toFloatFormat(string, '.', ',');
    }

    string = string.trim();

    // 1st dot position
    dotPos = string.indexOf('.');
    // 1st comma position
    commaPos = string.indexOf(',');
    // 1st space position
    spacePos = string.indexOf(' ');

    if (dotPos + commaPos + spacePos === -3) {
      // life is good, no separators
      return toFloatFormat(string);
    }

    spaceSplit = string.split(' ');
    spaceCount = spaceSplit.length - 1;
    dotCount = string.split('.').length - 1;
    commaCount = string.split(',').length - 1;

    // only combination of 2 separators allowed
    if (dotCount > 0 && commaCount > 0 && spaceCount > 0) {
      return Number.NaN;
    }

    // if there is any separator (space, comma, dot) found more than once,
    // all other must not be found more than once
    if (dotCount > 1 && (commaCount > 1 || spaceCount > 1)) {
      return Number.NaN;
    }

    if (commaCount > 1 && spaceCount > 1) {
      return Number.NaN;
    }

    if (spaceCount > 0) {
      if (!string.match(/^(\d{1,3})?(\s\d{3})*([,\.]\d+)?$/)) {
        return Number.NaN;
      }
      string = spaceSplit.join('');
    }

    if (dotPos !== -1 && commaPos !== -1) {
      return parseMixedSeparators();
    }

    if (dotPos !== -1) {
      // only dot(s) in format
      return parseParts(string, '.', dotCount);
    }

    if (commaPos !== -1) {
      // only comma(s) in format
      return parseParts(string, ',', commaCount);
    }

    return toFloatFormat(string);
  };

  return parse(str);
};

if (typeof exports !== 'undefined') {
  if (typeof module !== 'undefined' && module.exports) {
    exports = module.exports = floatify;
  }
}


1		'use strict';
2
3	1	var floatify = function floatify(str) {
4	279	var toFloatFormat = function toFloatFormat(str, ts, ds) {
5	229	var string = str;
6	229	var decimalSeparator = ds \|\| '';
7
8	229	string = string.split(ts \|\| '').join('');
9	229	if (decimalSeparator !== '') {
10	195	string = string.split(decimalSeparator).join('.');
11		}
12
13	229	return parseFloat(string);
14		};
15
16	279	var parseParts = function parseParts(str, ele, count) {
17	165	var string = str;
18	165	var element = ele;
19	165	var parts = string.split(element);
20
21		function parseMidPart() {
22	25	if (current.length !== 3) {
23	16	return Number.NaN;
24		}
25
26	9	if (left.length > 3) {
27	2	return Number.NaN;
28		}
29
30		// no decision, continue
31	7	return null;
32		}
33
34		function parseEndPart() {
35	147	if ((leftVal === 0 \|\| isNaN(leftVal) \|\| left.length > 3)) {
36	94	return toFloatFormat(string, '', element);
37		}
38
39	53	if (current.length === 3) {
40	11	return toFloatFormat(string, element, '');
41		}
42
43	42	if (count === 1) {
44	38	return toFloatFormat(string, '', element);
45		}
46
47	4	return Number.NaN;
48		}
49
50	165	for (var i = 1; i < parts.length; i++) {
51	172	var current = parts[i];
52	172	var left = parts[i - 1];
53	172	var leftVal = parseInt(left, 10);
54	172	var isLast = parts.length - 1 === i;
55		var parseResult;
56
57	172	if (!isLast) {
58	25	parseResult = parseMidPart();
59		} else {
60	147	parseResult = parseEndPart();
61		}
62
63	172	if (parseResult !== null) {
64	165	break;
65		}
66		}
67	165	return parseResult \|\| Number.NaN;
68		};
69
70	279	var parse = function parse(str) {
71	279	var string = str;
72		var spacePos;
73		var spaceSplit;
74		var spaceCount;
75		var dotPos;
76		var commaPos;
77		var lDotPos;
78		var lCommaPos;
79		var dotCount;
80		var commaCount;
81
82		function parseMixedSeparators() {
83		// format is using dot and comma
84
85		// last dot position
86	68	lDotPos = string.lastIndexOf('.');
87		// last comma position
88	68	lCommaPos = string.lastIndexOf(',');
89
90		// order of 1st dot -> comma must be same as last dot -> comma
91		// 123.123.123,123 -> ok 123.123,123.123 -> not ok
92	68	if (Math.sign(dotPos - commaPos) !== Math.sign(lDotPos - lCommaPos)) {
93	3	return Number.NaN;
94		}
95
96		// check positions to guess the thousands separator
97	65	if (dotPos > commaPos) {
98	57	if (dotCount > 1) {
99	1	return Number.NaN;
100		}
101		// best guess: . is thousands separator and , is decimal point
102	56	return toFloatFormat(string, ',', '.');
103		}
104
105	8	if (commaCount > 1) {
106	1	return Number.NaN;
107		}
108		// best guess: , is thousands separator and . is decimal point
109	7	return toFloatFormat(string, '.', ',');
110		}
111
112	279	string = string.trim();
113
114		// 1st dot position
115	279	dotPos = string.indexOf('.');
116		// 1st comma position
117	279	commaPos = string.indexOf(',');
118		// 1st space position
119	279	spacePos = string.indexOf(' ');
120
121	279	if (dotPos + commaPos + spacePos === -3) {
122		// life is good, no separators
123	18	return toFloatFormat(string);
124		}
125
126	261	spaceSplit = string.split(' ');
127	261	spaceCount = spaceSplit.length - 1;
128	261	dotCount = string.split('.').length - 1;
129	261	commaCount = string.split(',').length - 1;
130
131		// only combination of 2 separators allowed
132	261	if (dotCount > 0 && commaCount > 0 && spaceCount > 0) {
133	1	return Number.NaN;
134		}
135
136		// if there is any separator (space, comma, dot) found more than once,
137		// all other must not be found more than once
138	260	if (dotCount > 1 && (commaCount > 1 \|\| spaceCount > 1)) {
139	4	return Number.NaN;
140		}
141
142	256	if (commaCount > 1 && spaceCount > 1) {
143	1	return Number.NaN;
144		}
145
146	255	if (spaceCount > 0) {
147	72	if (!string.match(/^(\d{1,3})?(\s\d{3})*([,\.]\d+)?$/)) {
148	17	return Number.NaN;
149		}
150	55	string = spaceSplit.join('');
151		}
152
153	238	if (dotPos !== -1 && commaPos !== -1) {
154	68	return parseMixedSeparators();
155		}
156
157	170	if (dotPos !== -1) {
158		// only dot(s) in format
159	85	return parseParts(string, '.', dotCount);
160		}
161
162	85	if (commaPos !== -1) {
163		// only comma(s) in format
164	80	return parseParts(string, ',', commaCount);
165		}
166
167	5	return toFloatFormat(string);
168		};
169
170	279	return parse(str);
171		};
172
173	2	if (typeof exports !== 'undefined') {
174	4	if (typeof module !== 'undefined' && module.exports) {
175	1	exports = module.exports = floatify;
176		}
177		}
178

pocketrocket / floatify

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Branch — decomplexify (3ec600)

floatify.js ➔ ... ➔ parseMixedSeparators A

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