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Update subsetFont.go

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Bernard Xie 2023-05-31 18:30:21 -07:00
parent 73cd05f9e9
commit 0e5da2fa56
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GPG key ID: 3C3E0036CE0F892C
1 changed files with 4 additions and 2 deletions
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lib/font/subsetFont.go
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@ -369,8 +369,10 @@ func (utf *utf8FontFile) generateCMAPTable(cidSymbolPairCollection map[int]int,
cmap = append(cmap, 0)
// Calculating cmap length based off of fpdf https://github.com/Setasign/FPDF/blob/f4104a04c9a3f95c4c26a0a0531abebcc980987a/makefont/ttfparser.php#L476
length := (3 + len(cmap)) * 2 // the 3 extra bytes are for encodingID, offset, format, which are part of the cmap length
data = append(data, length, 0) // [version, numTables, platformID, encodingID, offset, format], length, language
// https://learn.microsoft.com/en-us/typography/opentype/spec/cmap#format-4-segment-mapping-to-delta-values
// The 3 extra bytes are for encodingID, offset, format, which are also part of the cmap
length := (3 + len(cmap)) * 2
data = append(data, length, 0)
data = append(data, cmap...)
cmapstr := make([]byte, 0)