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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Encoding; |
| 6 | |
| 7 | /** |
| 8 | * Predefined CMap names for CJK font encoding — ISO 32000-2 §9.7.5. |
| 9 | * |
| 10 | * These CMap names are built into conforming PDF viewers and don't need |
| 11 | * to be embedded as CMap streams. They map character codes to CIDs for |
| 12 | * the four Adobe CJK character collections. |
| 13 | * |
| 14 | * Use these with Type0Font as the /Encoding value when working with |
| 15 | * CJK fonts that follow the standard Adobe CID collections. |
| 16 | */ |
| 17 | final class PredefinedCMap |
| 18 | { |
| 19 | // ----------------------------------------------------------------------- |
| 20 | // Adobe-Japan1 (Japanese) |
| 21 | // ----------------------------------------------------------------------- |
| 22 | public const JAPAN_EUC = '83pv-RKSJ-H'; |
| 23 | public const JAPAN_SJIS_H = '90ms-RKSJ-H'; |
| 24 | public const JAPAN_SJIS_V = '90ms-RKSJ-V'; |
| 25 | public const JAPAN_UCS2_H = 'UniJIS-UCS2-H'; |
| 26 | public const JAPAN_UCS2_V = 'UniJIS-UCS2-V'; |
| 27 | public const JAPAN_UTF16_H = 'UniJIS-UTF16-H'; |
| 28 | public const JAPAN_UTF16_V = 'UniJIS-UTF16-V'; |
| 29 | |
| 30 | // ----------------------------------------------------------------------- |
| 31 | // Adobe-Korea1 (Korean) |
| 32 | // ----------------------------------------------------------------------- |
| 33 | public const KOREA_UHC_H = 'KSCms-UHC-H'; |
| 34 | public const KOREA_UHC_V = 'KSCms-UHC-V'; |
| 35 | public const KOREA_UCS2_H = 'UniKS-UCS2-H'; |
| 36 | public const KOREA_UCS2_V = 'UniKS-UCS2-V'; |
| 37 | public const KOREA_UTF16_H = 'UniKS-UTF16-H'; |
| 38 | public const KOREA_UTF16_V = 'UniKS-UTF16-V'; |
| 39 | |
| 40 | // ----------------------------------------------------------------------- |
| 41 | // Adobe-GB1 (Simplified Chinese) |
| 42 | // ----------------------------------------------------------------------- |
| 43 | public const GB_GBK_H = 'GBK-EUC-H'; |
| 44 | public const GB_GBK_V = 'GBK-EUC-V'; |
| 45 | public const GB_UCS2_H = 'UniGB-UCS2-H'; |
| 46 | public const GB_UCS2_V = 'UniGB-UCS2-V'; |
| 47 | public const GB_UTF16_H = 'UniGB-UTF16-H'; |
| 48 | public const GB_UTF16_V = 'UniGB-UTF16-V'; |
| 49 | |
| 50 | // ----------------------------------------------------------------------- |
| 51 | // Adobe-CNS1 (Traditional Chinese) |
| 52 | // ----------------------------------------------------------------------- |
| 53 | public const CNS_BIG5_H = 'ETen-B5-H'; |
| 54 | public const CNS_BIG5_V = 'ETen-B5-V'; |
| 55 | public const CNS_UCS2_H = 'UniCNS-UCS2-H'; |
| 56 | public const CNS_UCS2_V = 'UniCNS-UCS2-V'; |
| 57 | public const CNS_UTF16_H = 'UniCNS-UTF16-H'; |
| 58 | public const CNS_UTF16_V = 'UniCNS-UTF16-V'; |
| 59 | |
| 60 | // ----------------------------------------------------------------------- |
| 61 | // Identity mappings (already used, listed for completeness) |
| 62 | // ----------------------------------------------------------------------- |
| 63 | public const IDENTITY_H = 'Identity-H'; |
| 64 | public const IDENTITY_V = 'Identity-V'; |
| 65 | |
| 66 | /** |
| 67 | * Get the CIDSystemInfo registry/ordering/supplement for a CMap name. |
| 68 | * |
| 69 | * @return array{registry: string, ordering: string, supplement: int}|null |
| 70 | */ |
| 71 | public static function getCIDSystemInfo(string $cmapName): ?array |
| 72 | { |
| 73 | if (str_contains($cmapName, 'Japan') || str_contains($cmapName, 'JIS') || str_contains($cmapName, 'RKSJ') || str_contains($cmapName, 'pv-RKSJ')) { |
| 74 | return ['registry' => 'Adobe', 'ordering' => 'Japan1', 'supplement' => 6]; |
| 75 | } |
| 76 | if (str_contains($cmapName, 'Korea') || str_contains($cmapName, 'KS') || str_contains($cmapName, 'UniKS')) { |
| 77 | return ['registry' => 'Adobe', 'ordering' => 'Korea1', 'supplement' => 2]; |
| 78 | } |
| 79 | if (str_contains($cmapName, 'GB') || str_contains($cmapName, 'UniGB')) { |
| 80 | return ['registry' => 'Adobe', 'ordering' => 'GB1', 'supplement' => 5]; |
| 81 | } |
| 82 | if (str_contains($cmapName, 'CNS') || str_contains($cmapName, 'B5') || str_contains($cmapName, 'UniCNS')) { |
| 83 | return ['registry' => 'Adobe', 'ordering' => 'CNS1', 'supplement' => 7]; |
| 84 | } |
| 85 | if ($cmapName === 'Identity-H' || $cmapName === 'Identity-V') { |
| 86 | return ['registry' => 'Adobe', 'ordering' => 'Identity', 'supplement' => 0]; |
| 87 | } |
| 88 | return null; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Check if a CMap name is a predefined CMap (built into PDF viewers). |
| 93 | */ |
| 94 | public static function isPredefined(string $cmapName): bool |
| 95 | { |
| 96 | return self::getCIDSystemInfo($cmapName) !== null; |
| 97 | } |
| 98 | } |