(preferredCode)
| 86 | // Returns first available and valid code in the Unicode Private Use Area. |
| 87 | // |
| 88 | function findPrivateUseArea(preferredCode) { |
| 89 | if (preferredCode && |
| 90 | checkValidCode(preferredCode) && |
| 91 | !usedCodes[preferredCode] && |
| 92 | preferredCode >= UNICODE_PRIVATE_USE_AREA_MIN && |
| 93 | preferredCode <= UNICODE_PRIVATE_USE_AREA_MAX) { |
| 94 | return preferredCode; |
| 95 | } |
| 96 | |
| 97 | var code = findCode(UNICODE_PRIVATE_USE_AREA_MIN, UNICODE_PRIVATE_USE_AREA_MAX); |
| 98 | |
| 99 | if (code !== -1) { |
| 100 | return code; |
| 101 | } |
| 102 | |
| 103 | // Should never happen. |
| 104 | throw new Error('Free glyph codes in the Private Use Area are run out.'); |
| 105 | } |
| 106 | |
| 107 | |
| 108 | // Returns first available and valid printable ASCII code. |
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