feat(编辑能力): 修复字体编辑错配,优化来源标识
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xiaoqidun committed 2026-09-16 19:11:33 +08:00
1 parent 1914b5329a
commit f9646c70e9
8 files changed
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@@ -34,42 +34,70 @@ type fontNameRecord struct {
}
// appendFontFileNames 使用字体内部名称匹配,缺失时保留文件名
// 入参: candidates 字体候选, index 文件候选索引, names 字体内部名称
// 入参: candidates 字体候选, index 文件候选索引, faces 各字体内部名称
// 返回: []fontFileCandidate 字体候选列表
func appendFontFileNames(candidates []fontFileCandidate, index int, names []string) []fontFileCandidate {
func appendFontFileNames(candidates []fontFileCandidate, index int, faces [][]string) []fontFileCandidate {
file := candidates[index]
for i, name := range names {
file.normalized = fontNormalizeName(name)
if i == 0 {
candidates[index] = file
} else {
candidates = append(candidates, file)
replaced := false
for face, names := range faces {
file.face = face
for _, name := range names {
file.normalized = fontNormalizeName(name)
if !replaced {
candidates[index] = file
replaced = true
} else {
candidates = append(candidates, file)
}
}
}
return candidates
}
// fontFileNames 读取字体或集合首项的名称
// fontFileNames 按字体索引读取字体或集合中各项的名称
// 入参: file 字体数据
// 返回: []string 字体名称及带样式的字体族名称
func fontFileNames(file io.ReaderAt) []string {
// 返回: [][]string 各字体名称及带样式的字体族名称
func fontFileNames(file io.ReaderAt) [][]string {
var header [12]byte
if _, err := file.ReadAt(header[:], 0); err != nil {
return nil
}
var offset int64
if string(header[:4]) == "ttcf" {
if binary.BigEndian.Uint32(header[8:]) == 0 {
return nil
}
if string(header[:4]) != "ttcf" {
return [][]string{fontFaceNames(file, 0)}
}
version := binary.BigEndian.Uint32(header[4:])
if version != 0x00010000 && version != 0x00020000 {
return nil
}
var faces [][]string
for i, count := uint32(0), binary.BigEndian.Uint32(header[8:]); i < count; i++ {
var entry [4]byte
if _, err := file.ReadAt(entry[:], 12); err != nil {
return nil
}
offset = int64(binary.BigEndian.Uint32(entry[:]))
if _, err := file.ReadAt(header[:], offset); err != nil {
if _, err := file.ReadAt(entry[:], 12+int64(i)*4); err != nil {
return nil
}
faces = append(faces, fontFaceNames(file, int64(binary.BigEndian.Uint32(entry[:]))))
}
return faces
}
// fontCollectionIndex 按内部名称与样式选择集合项,未匹配时保留首项
// 入参: data 集合数据, names 字体名称, bold 是否粗体, italic 是否斜体
// 返回: int 零起始字体索引
func fontCollectionIndex(data []byte, names []string, bold, italic bool) int {
candidates := appendFontFileNames([]fontFileCandidate{{}}, 0, fontFileNames(bytes.NewReader(data)))
if matches := fontFileMatches(candidates, names, bold, italic); len(matches) > 0 {
return matches[0].face
}
return 0
}
// fontFaceNames 读取指定字体表目录中的名称
// 入参: file 字体数据, offset 字体表目录偏移
// 返回: []string 字体名称及带样式的字体族名称
func fontFaceNames(file io.ReaderAt, offset int64) []string {
var header [12]byte
if _, err := file.ReadAt(header[:], offset); err != nil {
return nil
}
switch string(header[:4]) {
case "\x00\x01\x00\x00", "OTTO", "true":