diff options
Diffstat (limited to 'addons/barcodes/static/src/js/barcode_parser.js')
| -rw-r--r-- | addons/barcodes/static/src/js/barcode_parser.js | 163 |
1 files changed, 104 insertions, 59 deletions
diff --git a/addons/barcodes/static/src/js/barcode_parser.js b/addons/barcodes/static/src/js/barcode_parser.js index 3ce07be1755..13052288f8f 100644 --- a/addons/barcodes/static/src/js/barcode_parser.js +++ b/addons/barcodes/static/src/js/barcode_parser.js @@ -20,7 +20,7 @@ openerp.barcodes = function(instance) { load: function(){ var self = this; return new instance.web.Model('barcode.nomenclature') - .query(['name','rule_ids','strict_ean']) + .query(['name','rule_ids','upc_ean_conv']) .filter([['id','=',this.nomenclature_id[0]]]) .first() .then(function(nomenclature){ @@ -60,12 +60,44 @@ openerp.barcodes = function(instance) { return Number((10 - total % 10) % 10); }, + // returns the checksum of the ean8, or -1 if the ean has not the correct length, ean must be a string + ean8_checskum: function(ean){ + var code = ean.split(''); + if (code.length !== 8) { + return -1; + } + var sum1 = Number(code[1]) + Number(code[3]) + Number(code[5]); + var sum2 = Number(code[0]) + Number(code[2]) + Number(code[4]) + Number(code[6]); + var total = sum1 + 3 * sum2; + return Number((10 - total % 10) % 10); + }, + + // returns true if the ean is a valid EAN barcode number by checking the control digit. // ean must be a string check_ean: function(ean){ return /^\d+$/.test(ean) && this.ean_checksum(ean) === Number(ean[ean.length-1]); }, + // returns true if the barcode string is encoded with the provided encoding. + check_encoding: function(barcode, encoding) { + var len = barcode.length; + var allnum = /^\d+$/.test(barcode); + var check = Number(barcode[len-1]); + + if (encoding === 'ean13') { + return len === 13 && allnum && this.ean_checksum(barcode) === check; + } else if (encoding === 'ean8') { + return len === 8 && allnum && this.ean8_checksum(barcode) === check; + } else if (encoding === 'upca') { + return len === 12 && allnum && this.ean_checksum('0'+barcode) === check; + } else if (encoding === 'any') { + return true; + } else { + return false; + } + }, + // returns a valid zero padded ean13 from an ean prefix. the ean prefix must be a string. sanitize_ean: function(ean){ ean = ean.substr(0,13); @@ -75,6 +107,57 @@ openerp.barcodes = function(instance) { } return ean.substr(0,12) + this.ean_checksum(ean); }, + + // Returns a valid zero padded UPC-A from a UPC-A prefix. the UPC-A prefix must be a string. + sanitize_upc: function(upc) { + return this.sanitize_ean('0'+upc).substr(1,12); + }, + + // Checks if barcode matches the pattern + // Additionnaly retrieves the optional numerical content in barcode + // Returns an object containing: + // - value: the numerical value encoded in the barcode (0 if no value encoded) + // - base_code: the barcode in which numerical content is replaced by 0's + // - match: boolean + match_pattern: function (barcode, pattern){ + var match = { + value: 0, + base_code: barcode, + match: false, + }; + barcode = barcode.replace("\\", "\\\\").replace("{", '\{').replace("}", "\}").replace(".", "\."); + + var numerical_content = pattern.match(/[{][N]*[D]*[}]/); // look for numerical content in pattern + var base_pattern = pattern; + if(numerical_content){ // the pattern encodes a numerical content + var num_start = numerical_content.index; // start index of numerical content + var num_length = numerical_content[0].length; // length of numerical content + var value_string = barcode.substr(num_start, num_length-2); // numerical content in barcode + var whole_part_match = numerical_content[0].match("[{][N]*[D}]"); // looks for whole part of numerical content + var decimal_part_match = numerical_content[0].match("[{N][D]*[}]"); // looks for decimal part + var whole_part = value_string.substr(0, whole_part_match.index+whole_part_match[0].length-2); // retrieve whole part of numerical content in barcode + var decimal_part = "0." + value_string.substr(decimal_part_match.index, decimal_part_match[0].length-1); // retrieve decimal part + if (whole_part === ''){ + whole_part = '0'; + } + match['value'] = parseInt(whole_part) + parseFloat(decimal_part); + + // replace numerical content by 0's in barcode and pattern + match['base_code'] = barcode.substr(0,num_start); + var base_pattern = pattern.substr(0,num_start); + for(var i=0;i<(num_length-2);i++) { + match['base_code'] += "0"; + base_pattern += "0"; + } + match['base_code'] += barcode.substr(num_start+num_length-2,barcode.length-1); + base_pattern += pattern.substr(num_start+num_length,pattern.length-1); + + match['base_code'] = match['base_code'].replace("\\\\", "\\").replace("\{", "{").replace("\}","}").replace("\.","."); + } + + match['match'] = match['base_code'].substr(0,base_pattern.length).match(base_pattern); + return match; + }, // attempts to interpret a barcode (string encoding a barcode Code-128) // it will return an object containing various information about the barcode. @@ -86,7 +169,6 @@ openerp.barcodes = function(instance) { // - base_code : the barcode with all the encoding parts set to zero; the one put on // the product in the backend parse_barcode: function(barcode){ - var self = this; var parsed_result = { encoding: '', type:'error', @@ -94,69 +176,32 @@ openerp.barcodes = function(instance) { base_code: barcode, value: 0, }; - if (!self.nomenclature) { - return parsed_result; - } - - // Checks if barcode matches the pattern - // Additionnaly retrieves the optional numerical content in barcode - // Returns an object containing: - // - value: the numerical value encoded in the barcode (0 if no value encoded) - // - base_code: the barcode in which numerical content is replaced by 0's - // - match: boolean - function match_pattern(barcode, pattern){ - var match = { - value: 0, - base_code: barcode, - match: false, - }; - barcode = barcode.replace("\\", "\\\\").replace("{", '\{').replace("}", "\}").replace(".", "\."); - - var numerical_content = pattern.match(/[{][N]*[D]*[}]/); // look for numerical content in pattern - var base_pattern = pattern; - if(numerical_content){ // the pattern encodes a numerical content - var num_start = numerical_content.index; // start index of numerical content - var num_length = numerical_content[0].length; // length of numerical content - var value_string = barcode.substr(num_start, num_length-2); // numerical content in barcode - var whole_part_match = numerical_content[0].match("[{][N]*[D}]"); // looks for whole part of numerical content - var decimal_part_match = numerical_content[0].match("[{N][D]*[}]"); // looks for decimal part - var whole_part = value_string.substr(0, whole_part_match.index+whole_part_match[0].length-2); // retrieve whole part of numerical content in barcode - var decimal_part = "0." + value_string.substr(decimal_part_match.index, decimal_part_match[0].length-1); // retrieve decimal part - if (whole_part === ''){ - whole_part = '0'; - } - match['value'] = parseInt(whole_part) + parseFloat(decimal_part); - - // replace numerical content by 0's in barcode and pattern - match['base_code'] = barcode.substr(0,num_start); - var base_pattern = pattern.substr(0,num_start); - for(var i=0;i<(num_length-2);i++) { - match['base_code'] += "0"; - base_pattern += "0"; - } - match['base_code'] += barcode.substr(num_start+num_length-2,barcode.length-1); - base_pattern += pattern.substr(num_start+num_length,pattern.length-1); - - match['base_code'] = match['base_code'].replace("\\\\", "\\").replace("\{", "{").replace("\}","}").replace("\.","."); - } - match['match'] = match['base_code'].substr(0,base_pattern.length).match(base_pattern); - return match; + if (!this.nomenclature) { + return parsed_result; } - // If the nomenclature does not use strict EAN, prepend the barcode with a 0 if it seems - // that it has been striped by the barcode scanner, when trying to match an EAN13 rule - var prepend_zero = false; - if(!self.strict_ean && barcode.length === 12 && self.check_ean("0"+barcode)){ - prepend_zero = true; - } - var rules = self.nomenclature.rules; + var rules = this.nomenclature.rules; for (var i = 0; i < rules.length; i++) { + var rule = rules[i]; var cur_barcode = barcode; - if (prepend_zero && rules[i].encoding == 'ean13'){ - cur_barcode = '0'+cur_barcode; + + if ( rule.encoding === 'ean13' && + this.check_encoding(barcode,'upca') && + this.nomenclature.upc_ean_conv in {'upc2ean':'','always':''} ){ + cur_barcode = '0' + cur_barcode; + } else if (rule.encoding === 'upca' && + this.check_encoding(barcode,'ean13') && + barcode[0] === '0' && + this.upc_ean_conv in {'ean2upc':'','always':''} ){ + cur_barcode = cur_barcode.substr(1,12); + } + + if (!this.check_encoding(cur_barcode,rule.encoding)) { + continue; } - var match = match_pattern(cur_barcode,rules[i].pattern); + + var match = this.match_pattern(cur_barcode,rules[i].pattern); if (match.match) { if(rules[i].type === 'alias') { barcode = rules[i].alias; 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