scratch – Blame information for rev 95
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Rev | Author | Line No. | Line |
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84 | office | 1 | // Converts base64 to blob. |
2 | function base64toBlob(base64Data, contentType) { |
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3 | contentType = contentType || ''; |
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4 | var sliceSize = 1024; |
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5 | var byteCharacters = atob(base64Data); |
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6 | var bytesLength = byteCharacters.length; |
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7 | var slicesCount = Math.ceil(bytesLength / sliceSize); |
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8 | var byteArrays = new Array(slicesCount); |
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9 | |||
10 | for (var sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {> |
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11 | < slicesCount; ++sliceIndex) { var begin = sliceIndex * sliceSize;> |
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12 | < slicesCount; ++sliceIndex) { var end = Math.min(begin + sliceSize, bytesLength);> |
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13 | |||
14 | < slicesCount; ++sliceIndex) { var bytes = new Array(end - begin);> |
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15 | < slicesCount; ++sliceIndex) { for (var offset = begin, i = 0 ; offset < end; ++i, ++offset) {>> |
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16 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) { bytes[i] = byteCharacters[offset].charCodeAt(0);>> |
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17 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) { }>> |
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18 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) { byteArrays[sliceIndex] = new Uint8Array(bytes);>> |
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19 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) { }>> |
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20 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) { return new Blob(byteArrays, { type: contentType });>> |
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21 | < slicesCount; ++sliceIndex) {< end; ++i, ++offset) {}>> |