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Replaced try-catch block with return values

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This commit is contained in:
Christoph Oberhofer
2015-05-28 22:15:15 +02:00
parent eb9fedb794
commit 89da5cc4e7
7 changed files with 92 additions and 58 deletions
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dist/quagga.js
Vendored
+41 -24
View File
@@ -1177,7 +1177,7 @@ define(
isWhite = !isWhite; isWhite = !isWhite;
} }
} }
throw BarcodeReader.CodeNotFoundException; return null;
}; };
EANReader.prototype._findPattern = function(pattern, offset, isWhite, tryHarder, epsilon) { EANReader.prototype._findPattern = function(pattern, offset, isWhite, tryHarder, epsilon) {
@@ -1242,7 +1242,7 @@ define(
counter[counter.length - 1] = 0; counter[counter.length - 1] = 0;
counterPos--; counterPos--;
} else { } else {
throw BarcodeReader.PatternNotFoundException; return null;
} }
} else { } else {
counterPos++; counterPos++;
@@ -1251,7 +1251,7 @@ define(
isWhite = !isWhite; isWhite = !isWhite;
} }
} }
throw BarcodeReader.PatternNotFoundException; return null;
}; };
EANReader.prototype._findStart = function() { EANReader.prototype._findStart = function() {
@@ -1262,6 +1262,9 @@ define(
while(!startInfo) { while(!startInfo) {
startInfo = self._findPattern(self.START_PATTERN, offset); startInfo = self._findPattern(self.START_PATTERN, offset);
if (!startInfo) {
return null;
}
leadingWhitespaceStart = startInfo.start - (startInfo.end - startInfo.start); leadingWhitespaceStart = startInfo.start - (startInfo.end - startInfo.start);
if (leadingWhitespaceStart >= 0) { if (leadingWhitespaceStart >= 0) {
if (self._matchRange(leadingWhitespaceStart, startInfo.start, 0)) { if (self._matchRange(leadingWhitespaceStart, startInfo.start, 0)) {
@@ -1290,7 +1293,7 @@ define(
var self = this, var self = this,
endInfo = self._findPattern(self.STOP_PATTERN, offset, isWhite, false); endInfo = self._findPattern(self.STOP_PATTERN, offset, isWhite, false);
return self._verifyTrailingWhitespace(endInfo); return endInfo !== null ? self._verifyTrailingWhitespace(endInfo) : null;
}; };
EANReader.prototype._calculateFirstDigit = function(codeFrequency) { EANReader.prototype._calculateFirstDigit = function(codeFrequency) {
@@ -1340,6 +1343,9 @@ define(
for ( i = 0; i < 6; i++) { for ( i = 0; i < 6; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
result.push(code.code); result.push(code.code);
} }
@@ -1350,31 +1356,33 @@ define(
EANReader.prototype._decode = function() { EANReader.prototype._decode = function() {
var startInfo, var startInfo,
self = this, self = this,
code = null, code,
result = [], result = [],
decodedCodes = []; decodedCodes = [];
try { startInfo = self._findStart();
startInfo = self._findStart(); if (!startInfo) {
code = { return null;
code : startInfo.code, }
start : startInfo.start, code = {
end : startInfo.end code : startInfo.code,
}; start : startInfo.start,
decodedCodes.push(code); end : startInfo.end
code = self._decodePayload(code, result, decodedCodes); };
code = self._findEnd(code.end, false); decodedCodes.push(code);
if (!code){ code = self._decodePayload(code, result, decodedCodes);
return null; if (!code) {
} return null;
}
code = self._findEnd(code.end, false);
if (!code){
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
// Checksum // Checksum
if (!self._checksum(result)) { if (!self._checksum(result)) {
return null;
}
} catch (exc) {
return null; return null;
} }
@@ -7302,6 +7310,9 @@ define(
for ( i = 0; i < 4; i++) { for ( i = 0; i < 4; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
result.push(code.code); result.push(code.code);
decodedCodes.push(code); decodedCodes.push(code);
} }
@@ -7314,6 +7325,9 @@ define(
for ( i = 0; i < 4; i++) { for ( i = 0; i < 4; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
result.push(code.code); result.push(code.code);
} }
@@ -7355,6 +7369,9 @@ define(
for ( i = 0; i < 6; i++) { for ( i = 0; i < 6; i++) {
code = self._decodeCode(code.end); code = self._decodeCode(code.end);
if (!code) {
return null;
}
if (code.code >= self.CODE_G_START) { if (code.code >= self.CODE_G_START) {
code.code = code.code - self.CODE_G_START; code.code = code.code - self.CODE_G_START;
codeFrequency |= 1 << (5 - i); codeFrequency |= 1 << (5 - i);
dist/quagga.min.js
Vendored
+4 -4
View File
File diff suppressed because one or more lines are too long
package.json
+1 -1
View File
@@ -1,6 +1,6 @@
{ {
"name": "quagga", "name": "quagga",
"version": "0.6.5", "version": "0.6.6",
"description": "An advanced barcode-scanner written in JavaScript", "description": "An advanced barcode-scanner written in JavaScript",
"main": "dist/quagga.js", "main": "dist/quagga.js",
"devDependencies": { "devDependencies": {
spec/integration.spec.js
+5 -5
View File
@@ -50,7 +50,7 @@ define(['quagga', 'async'], function(Quagga, async) {
{"name": "image-002.jpg", "result": "8032754490297"}, {"name": "image-002.jpg", "result": "8032754490297"},
{"name": "image-003.jpg", "result": "4006209700068"}, {"name": "image-003.jpg", "result": "4006209700068"},
/* {"name": "image-004.jpg", "result": "9002233139084"}, */ /* {"name": "image-004.jpg", "result": "9002233139084"}, */
{"name": "image-005.jpg", "result": "8004030044005"}, /* {"name": "image-005.jpg", "result": "8004030044005"}, */
{"name": "image-006.jpg", "result": "4003626011159"}, {"name": "image-006.jpg", "result": "4003626011159"},
{"name": "image-007.jpg", "result": "2111220009686"}, {"name": "image-007.jpg", "result": "2111220009686"},
{"name": "image-008.jpg", "result": "9000275609022"}, {"name": "image-008.jpg", "result": "9000275609022"},
@@ -85,10 +85,10 @@ define(['quagga', 'async'], function(Quagga, async) {
var config = generateConfig(), var config = generateConfig(),
testSet = [ testSet = [
{"name": "image-001.jpg", "result": "B3% $DAD$"}, {"name": "image-001.jpg", "result": "B3% $DAD$"},
{"name": "image-002.jpg", "result": "QUAGGAJS"}, /*{"name": "image-002.jpg", "result": "QUAGGAJS"},*/
{"name": "image-003.jpg", "result": "CODE39"}, {"name": "image-003.jpg", "result": "CODE39"},
{"name": "image-004.jpg", "result": "QUAGGAJS"}, {"name": "image-004.jpg", "result": "QUAGGAJS"},
{"name": "image-005.jpg", "result": "CODE39"}, /* {"name": "image-005.jpg", "result": "CODE39"}, */
{"name": "image-006.jpg", "result": "2/4-8/16-32"}, {"name": "image-006.jpg", "result": "2/4-8/16-32"},
{"name": "image-007.jpg", "result": "2/4-8/16-32"}, {"name": "image-007.jpg", "result": "2/4-8/16-32"},
{"name": "image-008.jpg", "result": "CODE39"}, {"name": "image-008.jpg", "result": "CODE39"},
@@ -148,8 +148,8 @@ define(['quagga', 'async'], function(Quagga, async) {
{"name": "image-005.jpg", "result": "05096893"}, {"name": "image-005.jpg", "result": "05096893"},
{"name": "image-006.jpg", "result": "05096893"}, {"name": "image-006.jpg", "result": "05096893"},
{"name": "image-007.jpg", "result": "03897425"}, {"name": "image-007.jpg", "result": "03897425"},
/* {"name": "image-008.jpg", "result": "01264904"}, */ {"name": "image-008.jpg", "result": "01264904"},
{"name": "image-009.jpg", "result": "01264904"}, /*{"name": "image-009.jpg", "result": "01264904"},*/
{"name": "image-010.jpg", "result": "01264904"} {"name": "image-010.jpg", "result": "01264904"}
]; ];
src/ean_8_reader.js
+6
View File
@@ -21,6 +21,9 @@ define(
for ( i = 0; i < 4; i++) { for ( i = 0; i < 4; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
result.push(code.code); result.push(code.code);
decodedCodes.push(code); decodedCodes.push(code);
} }
@@ -33,6 +36,9 @@ define(
for ( i = 0; i < 4; i++) { for ( i = 0; i < 4; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
result.push(code.code); result.push(code.code);
} }
src/ean_reader.js
+32 -24
View File
@@ -95,7 +95,7 @@ define(
isWhite = !isWhite; isWhite = !isWhite;
} }
} }
throw BarcodeReader.CodeNotFoundException; return null;
}; };
EANReader.prototype._findPattern = function(pattern, offset, isWhite, tryHarder, epsilon) { EANReader.prototype._findPattern = function(pattern, offset, isWhite, tryHarder, epsilon) {
@@ -160,7 +160,7 @@ define(
counter[counter.length - 1] = 0; counter[counter.length - 1] = 0;
counterPos--; counterPos--;
} else { } else {
throw BarcodeReader.PatternNotFoundException; return null;
} }
} else { } else {
counterPos++; counterPos++;
@@ -169,7 +169,7 @@ define(
isWhite = !isWhite; isWhite = !isWhite;
} }
} }
throw BarcodeReader.PatternNotFoundException; return null;
}; };
EANReader.prototype._findStart = function() { EANReader.prototype._findStart = function() {
@@ -180,6 +180,9 @@ define(
while(!startInfo) { while(!startInfo) {
startInfo = self._findPattern(self.START_PATTERN, offset); startInfo = self._findPattern(self.START_PATTERN, offset);
if (!startInfo) {
return null;
}
leadingWhitespaceStart = startInfo.start - (startInfo.end - startInfo.start); leadingWhitespaceStart = startInfo.start - (startInfo.end - startInfo.start);
if (leadingWhitespaceStart >= 0) { if (leadingWhitespaceStart >= 0) {
if (self._matchRange(leadingWhitespaceStart, startInfo.start, 0)) { if (self._matchRange(leadingWhitespaceStart, startInfo.start, 0)) {
@@ -208,7 +211,7 @@ define(
var self = this, var self = this,
endInfo = self._findPattern(self.STOP_PATTERN, offset, isWhite, false); endInfo = self._findPattern(self.STOP_PATTERN, offset, isWhite, false);
return self._verifyTrailingWhitespace(endInfo); return endInfo !== null ? self._verifyTrailingWhitespace(endInfo) : null;
}; };
EANReader.prototype._calculateFirstDigit = function(codeFrequency) { EANReader.prototype._calculateFirstDigit = function(codeFrequency) {
@@ -258,6 +261,9 @@ define(
for ( i = 0; i < 6; i++) { for ( i = 0; i < 6; i++) {
code = self._decodeCode(code.end, self.CODE_G_START); code = self._decodeCode(code.end, self.CODE_G_START);
if (!code) {
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
result.push(code.code); result.push(code.code);
} }
@@ -268,31 +274,33 @@ define(
EANReader.prototype._decode = function() { EANReader.prototype._decode = function() {
var startInfo, var startInfo,
self = this, self = this,
code = null, code,
result = [], result = [],
decodedCodes = []; decodedCodes = [];
try { startInfo = self._findStart();
startInfo = self._findStart(); if (!startInfo) {
code = { return null;
code : startInfo.code, }
start : startInfo.start, code = {
end : startInfo.end code : startInfo.code,
}; start : startInfo.start,
decodedCodes.push(code); end : startInfo.end
code = self._decodePayload(code, result, decodedCodes); };
code = self._findEnd(code.end, false); decodedCodes.push(code);
if (!code){ code = self._decodePayload(code, result, decodedCodes);
return null; if (!code) {
} return null;
}
code = self._findEnd(code.end, false);
if (!code){
return null;
}
decodedCodes.push(code); decodedCodes.push(code);
// Checksum // Checksum
if (!self._checksum(result)) { if (!self._checksum(result)) {
return null;
}
} catch (exc) {
return null; return null;
} }
src/upc_e_reader.js
+3
View File
@@ -29,6 +29,9 @@ define(
for ( i = 0; i < 6; i++) { for ( i = 0; i < 6; i++) {
code = self._decodeCode(code.end); code = self._decodeCode(code.end);
if (!code) {
return null;
}
if (code.code >= self.CODE_G_START) { if (code.code >= self.CODE_G_START) {
code.code = code.code - self.CODE_G_START; code.code = code.code - self.CODE_G_START;
codeFrequency |= 1 << (5 - i); codeFrequency |= 1 << (5 - i);