mirror of
https://github.com/xiaoqidun/ofdgo.git
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807 lines
23 KiB
Go
807 lines
23 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package font
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import (
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"bytes"
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"path"
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"slices"
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"sort"
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"strings"
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)
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// 字体匹配按精确、部分和模糊匹配排列，零值表示未匹配
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const (
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MatchNone = iota
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MatchExact
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MatchPartial
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MatchFuzzy
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)
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// matchRules 保存常用字体的名称、文件名及系统字体匹配规则
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var matchRules = normalizeMatchRules([]matchRule{
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{
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Keys: []string{"小标宋", "方正小标宋", "xiaobiaosong", "fzxiaobiaosong", "fzxbs"},
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Names: []string{"小标宋体", "方正小标宋简体", "FZXiaoBiaoSong-B05", "FZXiaoBiaoSong-B05S"},
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Files: []string{"FZXBSJW.TTF", "fzxbs*.ttf", "fzxiaobiaosong*.ttf", "xiaobiaosong*.ttf"},
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System: "FZXiaoBiaoSong-B05S",
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NoSyntheticBold: true,
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},
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{
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Keys: []string{"宋体", "新宋体", "simsun", "nsimsun", "simsunextb", "song", "songti", "stsong", "书宋", "方正书宋"},
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Names: []string{"宋体", "新宋体", "SimSun", "NSimSun", "SongTi", "STSong"},
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Files: []string{"simsun.ttc", "simsun.ttf", "nsimsun.ttf", "STSONG.TTF"},
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System: "SimSun",
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},
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{
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Keys: []string{"黑体", "hei", "simhei", "heiti", "sthei", "方正黑体"},
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Names: []string{"黑体", "SimHei", "HeiTi", "STHeiti", "方正黑体简体"},
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Files: []string{"simhei.ttf", "STXIHEI.TTF", "FZHT_GB18030.TTF", "fzht*.ttf"},
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System: "SimHei",
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},
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{
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Keys: []string{"楷体", "kai", "kaiti", "simkai", "stkaiti", "方正楷体"},
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Names: []string{"楷体", "KaiTi", "SimKai", "STKaiti", "方正楷体简体"},
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Files: []string{"simkai.ttf", "kaiti.ttf", "STKAITI.TTF", "FZKTJ.TTF", "fzkai*.ttf", "fzkt*.ttf"},
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System: "KaiTi",
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},
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{
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Keys: []string{"仿宋", "fang", "fangsong", "simfang", "stfangsong", "方正仿宋"},
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Names: []string{"仿宋", "FangSong", "SimFang", "STFangsong", "方正仿宋简体"},
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Files: []string{"simfang.ttf", "fangsong.ttf", "STFANGSO.TTF", "FZFSJ.TTF", "fzfs*.ttf"},
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System: "FangSong",
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},
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{
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Keys: []string{"微软雅黑", "microsoftyahei", "yahei", "msyh"},
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Names: []string{"微软雅黑", "Microsoft YaHei", "YaHei", "MSYH"},
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Files: []string{"msyh.ttc", "msyh.ttf"},
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System: "Microsoft YaHei",
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},
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{
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Keys: []string{"arialblack"},
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Names: []string{"Arial Black", "ArialBlack"},
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Files: []string{"ariblk.ttf", "arial black*.ttf", "arialblack*.ttf"},
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System: "Arial Black",
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},
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{
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Keys: []string{"arial"},
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Names: []string{"Arial"},
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Files: []string{"arial.ttf", "arial*.ttf"},
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System: "Arial",
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},
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{
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Keys: []string{"helvetica"},
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Names: []string{"Helvetica", "Arial"},
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Files: []string{"arial.ttf", "arial*.ttf"},
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System: "Arial",
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},
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{
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Keys: []string{"couriernew", "courier"},
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Names: []string{"Courier New", "CourierNew", "Courier"},
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Files: []string{"cour.ttf", "courier new*.ttf", "courier*.ttf"},
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System: "Courier New",
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},
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{
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Keys: []string{"segoeui"},
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Names: []string{"Segoe UI", "SegoeUI"},
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Files: []string{"segoeui.ttf", "segoe*.ttf"},
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System: "Segoe UI",
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},
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{
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Keys: []string{"timesnewroman", "times"},
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Names: []string{"Times New Roman", "TimesNewRoman"},
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Files: []string{"times.ttf", "times new roman*.ttf", "times*.ttf"},
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System: "Times New Roman",
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},
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})
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// fontNameReplacer 移除字体名称匹配时忽略的分隔符
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var fontNameReplacer = strings.NewReplacer(" ", "", "-", "", "_", "", "(", "", ")", "", "（", "", "）", "")
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// matchRule 字体匹配规则
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type matchRule struct {
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Keys []string
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Names []string
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Files []string
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System string
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NoSyntheticBold bool
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}
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// FileCandidate 字体文件候选
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type FileCandidate struct {
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Name string
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Face int
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base string
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lowerBase string
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filename string
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normalized string
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names []string
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fold string
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}
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// patternMatcher 字体文件匹配器
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type patternMatcher struct {
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pattern string
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lowerPattern string
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stem string
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aliases []string
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priority int
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}
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// FileMatch 字体文件匹配结果
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type FileMatch struct {
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Name string
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Face int
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Priority int
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Rank int
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styleRank int
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sortName string
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}
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// fileKey 字体文件与集合索引的去重键
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type fileKey struct {
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Name string
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Face int
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}
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// NormalizeName 规范化字体名称
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// 入参: name 字体名称
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// 返回: string 规范化后的字体名称
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func NormalizeName(name string) string {
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name = strings.ReplaceAll(name, "\\", "/")
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name = path.Base(strings.TrimSpace(name))
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if IsFontFileName(name) {
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name = strings.TrimSuffix(name, path.Ext(name))
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}
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name = strings.ToLower(strings.TrimSpace(name))
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return fontNameReplacer.Replace(name)
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}
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// IsFontFileName 判断是否为字体文件名
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// 入参: name 文件名
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// 返回: bool 是否为字体文件
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func IsFontFileName(name string) bool {
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switch strings.ToLower(path.Ext(name)) {
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case ".ttf", ".otf", ".ttc", ".otc":
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return true
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default:
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return false
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}
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}
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// AppendFontName 追加字体名称
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// 入参: names 字体名称列表, seen 去重映射, name 字体名称
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// 返回: []string 字体名称列表
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func AppendFontName(names []string, seen map[string]bool, name string) []string {
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name = strings.TrimSpace(name)
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if name == "" {
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return names
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}
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key := NormalizeName(name)
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if key == "" || seen[key] {
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return names
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}
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seen[key] = true
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return append(names, name)
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}
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// normalizeMatchRules 预处理固定字体规则的匹配名称，保留候选名称及顺序
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// 入参: rules 字体匹配规则
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// 返回: []matchRule 预处理后的规则
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func normalizeMatchRules(rules []matchRule) []matchRule {
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for i := range rules {
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rule := &rules[i]
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keys := append(append(rule.Keys, rule.Names...), rule.System)
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rule.Keys = nil
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for _, key := range keys {
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key = NormalizeName(key)
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if key != "" && !slices.Contains(rule.Keys, key) {
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rule.Keys = append(rule.Keys, key)
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}
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}
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}
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return rules
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}
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// CandidateNames 获取字体候选名称
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// 入参: names 字体名称列表
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// 返回: []string 字体候选名称
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func CandidateNames(names ...string) []string {
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return candidateNamesByLevel(MatchFuzzy, names...)
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}
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// ExactCandidateNames 获取精确字体候选名称
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// 入参: names 字体名称列表
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// 返回: []string 精确字体候选名称
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func ExactCandidateNames(names ...string) []string {
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return candidateNamesByLevel(MatchExact, names...)
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}
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// qualifiedNames 获取保留名称后缀的字体候选
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// 入参: name 字体名称
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// 返回: []string 保留后缀的候选名称
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func qualifiedNames(name string) []string {
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name = NormalizeName(name)
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key := NormalizeName(name)
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var names []string
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seen := make(map[string]bool)
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for _, rule := range matchRules {
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if ruleMatchLevel(rule, key) != MatchPartial {
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continue
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}
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prefix := ""
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for _, alias := range rule.Keys {
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if len(alias) > len(prefix) && strings.HasPrefix(name, alias) {
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prefix = alias
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}
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}
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suffix := strings.TrimPrefix(name, prefix)
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for _, alias := range append([]string{rule.System}, rule.Names...) {
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names = AppendFontName(names, seen, NormalizeName(alias)+suffix)
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}
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}
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return names
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}
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// candidateNamesByLevel 获取指定等级内的字体候选名称
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// 入参: maxLevel 最大匹配等级, names 字体名称列表
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// 返回: []string 字体候选名称
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func candidateNamesByLevel(maxLevel int, names ...string) []string {
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var result []string
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seen := make(map[string]bool)
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var bases []string
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for _, name := range names {
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name = strings.TrimSpace(name)
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if name == "" {
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continue
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}
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result = AppendFontName(result, seen, name)
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bases = append(bases, name)
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}
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levels := matchLevels(bases)
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for level := MatchExact; level <= maxLevel; level++ {
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for i := range bases {
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for j, rule := range matchRules {
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if levels[i*len(matchRules)+j] == level {
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result = AppendFontName(result, seen, rule.System)
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for _, item := range rule.Names {
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result = AppendFontName(result, seen, item)
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}
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}
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}
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}
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}
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return result
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}
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// patternStem 获取字体匹配模式主干
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// 入参: pattern 字体文件匹配模式
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// 返回: string 字体匹配模式主干
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func patternStem(pattern string) string {
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stem := strings.TrimSuffix(pattern, "*")
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if IsFontFileName(stem) {
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stem = strings.TrimSuffix(stem, path.Ext(stem))
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}
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if index := strings.IndexAny(stem, "*?["); index >= 0 {
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stem = stem[:index]
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}
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return NormalizeName(stem)
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}
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// FilePatterns 获取字体文件匹配模式
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// 入参: names 字体名称列表
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// 返回: []string 字体文件匹配模式
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func FilePatterns(names ...string) []string {
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var result []string
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seen := make(map[string]bool)
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levels := matchLevels(names)
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for level := MatchExact; level <= MatchFuzzy; level++ {
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for _, name := range candidateNamesAtLevel(level, names, levels) {
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result = appendPattern(result, seen, name+"*")
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}
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for i := range names {
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for j, rule := range matchRules {
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if levels[i*len(matchRules)+j] == level {
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for _, item := range rule.Files {
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result = appendPattern(result, seen, item)
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}
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}
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}
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}
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}
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return result
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}
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// SystemNames 获取系统字体名称
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// 入参: names 字体名称列表
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// 返回: []string 系统字体名称
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func SystemNames(names ...string) []string {
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var result []string
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seen := make(map[string]bool)
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for _, name := range names {
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for _, item := range candidateNamesByLevel(MatchPartial, name) {
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result = AppendFontName(result, seen, item)
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}
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}
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return result
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}
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// candidateNamesAtLevel 获取指定等级的字体候选名称
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// 入参: level 匹配等级, names 字体名称列表, levels 名称与规则的匹配等级
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// 返回: []string 字体候选名称
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func candidateNamesAtLevel(level int, names []string, levels []int) []string {
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var result []string
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seen := make(map[string]bool)
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for i, name := range names {
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name = strings.TrimSpace(name)
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if name == "" {
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continue
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}
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if level == MatchExact {
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result = AppendFontName(result, seen, name)
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}
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for j, rule := range matchRules {
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if levels[i*len(matchRules)+j] == level {
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result = AppendFontName(result, seen, rule.System)
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for _, item := range rule.Names {
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result = AppendFontName(result, seen, item)
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}
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}
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}
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}
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return result
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}
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// DefaultSystemNames 获取默认系统字体名称
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// 返回: []string 默认系统字体名称
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func DefaultSystemNames() []string {
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return []string{
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"SimSun", "Microsoft YaHei", "SimHei", "KaiTi", "FangSong",
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"Noto Sans CJK SC", "Source Han Sans SC", "Arial", "Segoe UI", "Times New Roman",
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}
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}
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// NoSyntheticBold 判断字体是否禁用合成粗体
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// 入参: names 字体名称列表
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// 返回: bool 是否禁用合成粗体
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func NoSyntheticBold(names ...string) bool {
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for _, name := range names {
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name = NormalizeName(name)
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for _, rule := range matchRules {
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if !rule.NoSyntheticBold {
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continue
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}
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level := ruleMatchLevel(rule, name)
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if level >= MatchExact && level <= MatchPartial {
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return true
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}
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}
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}
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return false
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}
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// matchLevels 按名称和规则顺序计算匹配等级
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// 入参: names 字体名称列表
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// 返回: []int 名称与规则的匹配等级
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func matchLevels(names []string) []int {
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levels := make([]int, len(names)*len(matchRules))
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for i, name := range names {
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name = NormalizeName(name)
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for j, rule := range matchRules {
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levels[i*len(matchRules)+j] = ruleMatchLevel(rule, name)
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}
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}
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return levels
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}
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// ruleMatchLevel 获取字体规则匹配等级
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// 入参: rule 字体匹配规则, name 规范化后的字体名称
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// 返回: int 匹配等级
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func ruleMatchLevel(rule matchRule, name string) int {
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if name == "" {
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return MatchNone
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}
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level := MatchNone
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for _, item := range rule.Keys {
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if name == item {
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return MatchExact
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}
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if strings.HasPrefix(name, item) {
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level = MatchPartial
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} else if level == MatchNone && strings.Contains(name, item) {
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level = MatchFuzzy
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}
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}
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return level
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}
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// appendPattern 追加字体文件匹配模式
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// 入参: patterns 匹配模式列表, seen 去重映射, pattern 匹配模式
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// 返回: []string 匹配模式列表
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func appendPattern(patterns []string, seen map[string]bool, pattern string) []string {
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pattern = strings.TrimSpace(pattern)
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if pattern == "" {
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return patterns
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}
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key := strings.ToLower(pattern)
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if seen[key] {
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return patterns
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}
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seen[key] = true
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return append(patterns, pattern)
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}
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// AppendFileNames 建立各字体的内部名称与文件别名匹配候选
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// 入参: candidates 字体候选, index 文件候选索引, faces 各字体内部名称
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// 返回: []FileCandidate 字体候选列表
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func AppendFileNames(candidates []FileCandidate, index int, faces [][]string) []FileCandidate {
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file := candidates[index]
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replaced := false
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for face, names := range faces {
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file.Face = face
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file.names = make([]string, len(names))
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for i, name := range names {
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file.names[i] = NormalizeName(name)
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}
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for _, name := range file.names {
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file.normalized = name
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if !replaced {
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candidates[index] = file
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replaced = true
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} else {
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candidates = append(candidates, file)
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}
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}
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}
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return candidates
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}
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// CollectionIndex 按内部名称与样式选择集合项，未匹配时保留首项
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// 入参: data 集合数据, names 字体名称, bold 是否粗体, italic 是否斜体
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// 返回: int 零起始字体索引
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func CollectionIndex(data []byte, names []string, bold, italic bool) int {
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return NameIndex(FileNames(bytes.NewReader(data)), names, bold, italic)
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}
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|
||
// NameIndex 按名称与样式选择字体索引，未匹配时保留首项
|
||
// 入参: faces 各字体名称, names 目标名称, bold 是否粗体, italic 是否斜体
|
||
// 返回: int 零起始字体索引
|
||
func NameIndex(faces [][]string, names []string, bold, italic bool) int {
|
||
candidates := AppendFileNames([]FileCandidate{{}}, 0, faces)
|
||
if matches := FileMatches(candidates, names, bold, italic); len(matches) > 0 {
|
||
return matches[0].Face
|
||
}
|
||
return 0
|
||
}
|
||
|
||
// FileMatches 匹配字体文件候选
|
||
// 入参: candidates 字体候选, names 字体名称, bold 是否粗体, italic 是否斜体
|
||
// 返回: []FileMatch 按优先级排列的字体匹配
|
||
func FileMatches(candidates []FileCandidate, names []string, bold, italic bool) []FileMatch {
|
||
matches := make([]FileMatch, 0, len(candidates))
|
||
seen := make(map[fileKey]int, len(candidates))
|
||
if len(names) == 0 {
|
||
for _, name := range DefaultSystemNames() {
|
||
matches = append(matches, FileMatches(candidates, []string{name}, bold, italic)...)
|
||
}
|
||
sort.SliceStable(matches, func(i, j int) bool {
|
||
return matches[i].Rank < matches[j].Rank
|
||
})
|
||
unique := matches[:0]
|
||
for _, match := range matches {
|
||
key := fileKey{strings.ToLower(match.Name), match.Face}
|
||
if _, ok := seen[key]; !ok {
|
||
seen[key] = len(unique)
|
||
unique = append(unique, match)
|
||
}
|
||
}
|
||
return unique
|
||
}
|
||
for i, name := range names {
|
||
if name == "" {
|
||
continue
|
||
}
|
||
for j, alias := range append([]string{name}, qualifiedNames(name)...) {
|
||
matcher := patternMatcher{stem: NormalizeName(alias), priority: (i-len(names))*2 + min(j, 1)}
|
||
if matcher.stem == "" {
|
||
continue
|
||
}
|
||
for _, file := range candidates {
|
||
if rank := matcher.rankCandidate(file); rank == MatchExact {
|
||
appendFileMatch(&matches, seen, matcher, file, rank, bold, italic)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
for _, matcher := range newPatternMatchers(FilePatterns(names...)) {
|
||
for _, file := range candidates {
|
||
rank := matcher.rankCandidate(file)
|
||
appendFileMatch(&matches, seen, matcher, file, rank, bold, italic)
|
||
}
|
||
}
|
||
sortFileMatches(matches)
|
||
return matches
|
||
}
|
||
|
||
// FileCandidates 筛选字体文件候选
|
||
// 入参: names 文件名列表, base 文件名提取函数
|
||
// 返回: []FileCandidate 字体文件候选列表
|
||
func FileCandidates(names []string, base func(string) string) []FileCandidate {
|
||
files := make([]FileCandidate, 0, len(names))
|
||
for _, name := range names {
|
||
if IsFontFileName(name) {
|
||
baseName := base(name)
|
||
normalized := NormalizeName(strings.TrimSuffix(baseName, path.Ext(baseName)))
|
||
files = append(files, FileCandidate{
|
||
Name: name,
|
||
base: baseName,
|
||
lowerBase: strings.ToLower(baseName),
|
||
filename: normalized,
|
||
normalized: normalized,
|
||
fold: strings.ToLower(name),
|
||
})
|
||
}
|
||
}
|
||
return files
|
||
}
|
||
|
||
// newPatternMatcher 创建字体文件匹配器
|
||
// 入参: pattern 匹配模式
|
||
// 返回: patternMatcher 字体文件匹配器
|
||
func newPatternMatcher(pattern string) patternMatcher {
|
||
matcher := patternMatcher{
|
||
pattern: pattern,
|
||
lowerPattern: strings.ToLower(pattern),
|
||
stem: patternStem(pattern),
|
||
}
|
||
if matcher.stem != "" {
|
||
for _, alias := range ExactCandidateNames(matcher.stem) {
|
||
alias = NormalizeName(alias)
|
||
if alias != "" {
|
||
matcher.aliases = append(matcher.aliases, alias)
|
||
}
|
||
}
|
||
}
|
||
return matcher
|
||
}
|
||
|
||
// newPatternMatchers 创建字体文件匹配器列表
|
||
// 入参: patterns 匹配模式列表
|
||
// 返回: []patternMatcher 字体文件匹配器列表
|
||
func newPatternMatchers(patterns []string) []patternMatcher {
|
||
matchers := make([]patternMatcher, 0, len(patterns))
|
||
for priority, pattern := range patterns {
|
||
matcher := newPatternMatcher(pattern)
|
||
matcher.priority = priority
|
||
matchers = append(matchers, matcher)
|
||
}
|
||
return matchers
|
||
}
|
||
|
||
// rankCandidate 获取字体文件候选匹配等级
|
||
// 入参: file 字体文件候选
|
||
// 返回: int 匹配等级
|
||
func (m patternMatcher) rankCandidate(file FileCandidate) int {
|
||
exactPath, _ := path.Match(m.pattern, file.base)
|
||
lowerPath, _ := path.Match(m.lowerPattern, file.lowerBase)
|
||
if m.stem == "" {
|
||
if exactPath || lowerPath {
|
||
return MatchFuzzy
|
||
}
|
||
return MatchNone
|
||
}
|
||
name := m.candidateName(file)
|
||
if name == m.stem {
|
||
return MatchExact
|
||
}
|
||
for _, alias := range m.aliases {
|
||
if name == alias {
|
||
return MatchExact
|
||
}
|
||
}
|
||
if fileKnownStyleSuffix(m.styleSuffixNormalized(name)) {
|
||
return MatchExact
|
||
}
|
||
if strings.HasPrefix(name, m.stem) {
|
||
return MatchPartial
|
||
}
|
||
for _, alias := range m.aliases {
|
||
if strings.HasPrefix(name, alias) {
|
||
return MatchPartial
|
||
}
|
||
}
|
||
if exactPath || lowerPath || strings.Contains(name, m.stem) {
|
||
return MatchFuzzy
|
||
}
|
||
for _, alias := range m.aliases {
|
||
if strings.Contains(name, alias) {
|
||
return MatchFuzzy
|
||
}
|
||
}
|
||
return MatchNone
|
||
}
|
||
|
||
// candidateName 保留同族内部名称的区分，只有无关联时使用调用方文件别名
|
||
// 入参: file 字体文件候选
|
||
// 返回: string 用于统一匹配名称与样式的规范名称
|
||
func (m patternMatcher) candidateName(file FileCandidate) string {
|
||
if len(file.names) == 0 || file.base == "" || m.stem == "" {
|
||
return file.normalized
|
||
}
|
||
for _, name := range file.names {
|
||
if strings.HasPrefix(name, m.stem) {
|
||
return file.normalized
|
||
}
|
||
for _, alias := range m.aliases {
|
||
if strings.HasPrefix(name, alias) {
|
||
return file.normalized
|
||
}
|
||
}
|
||
}
|
||
return file.filename
|
||
}
|
||
|
||
// styleSuffixNormalized 获取规范字体名称的样式后缀
|
||
// 入参: name 规范字体名称
|
||
// 返回: string 样式后缀
|
||
func (m patternMatcher) styleSuffixNormalized(name string) string {
|
||
if m.stem == "" || name == "" {
|
||
return ""
|
||
}
|
||
if strings.HasPrefix(name, m.stem) {
|
||
return strings.TrimPrefix(name, m.stem)
|
||
}
|
||
for _, alias := range m.aliases {
|
||
if strings.HasPrefix(name, alias) {
|
||
return strings.TrimPrefix(name, alias)
|
||
}
|
||
}
|
||
return ""
|
||
}
|
||
|
||
// appendFileMatch 追加字体文件匹配结果
|
||
// 入参: matches 匹配结果, seen 已匹配文件, matcher 匹配器, file 字体文件候选, rank 匹配等级, bold 是否粗体, italic 是否斜体
|
||
func appendFileMatch(matches *[]FileMatch, seen map[fileKey]int, matcher patternMatcher, file FileCandidate, rank int, bold, italic bool) {
|
||
if rank == MatchNone {
|
||
return
|
||
}
|
||
suffix := matcher.styleSuffixNormalized(matcher.candidateName(file))
|
||
if rank == MatchFuzzy {
|
||
suffix = matcher.styleSuffixNormalized(NormalizeName(file.base))
|
||
}
|
||
next := FileMatch{
|
||
Name: file.Name,
|
||
Face: file.Face,
|
||
Priority: matcher.priority,
|
||
Rank: rank,
|
||
styleRank: fileStyleRank(suffix, bold, italic),
|
||
sortName: file.lowerBase,
|
||
}
|
||
key := fileKey{file.fold, file.Face}
|
||
if index, ok := seen[key]; ok {
|
||
if fileMatchLess(next, (*matches)[index]) {
|
||
(*matches)[index] = next
|
||
}
|
||
return
|
||
}
|
||
seen[key] = len(*matches)
|
||
*matches = append(*matches, next)
|
||
}
|
||
|
||
// sortFileMatches 排序字体文件匹配结果
|
||
// 入参: matches 匹配结果
|
||
func sortFileMatches(matches []FileMatch) {
|
||
sort.SliceStable(matches, func(i, j int) bool {
|
||
return fileMatchLess(matches[i], matches[j])
|
||
})
|
||
}
|
||
|
||
// fileMatchLess 判断字体文件匹配结果优先级
|
||
// 入参: left 左侧匹配结果, right 右侧匹配结果
|
||
// 返回: bool 左侧是否优先
|
||
func fileMatchLess(left, right FileMatch) bool {
|
||
if left.Priority != right.Priority {
|
||
return left.Priority < right.Priority
|
||
}
|
||
if left.Rank != right.Rank {
|
||
return left.Rank < right.Rank
|
||
}
|
||
if left.styleRank != right.styleRank {
|
||
return left.styleRank < right.styleRank
|
||
}
|
||
return left.sortName < right.sortName
|
||
}
|
||
|
||
// FileMatchNames 获取字体文件匹配名称
|
||
// 入参: matches 匹配结果
|
||
// 返回: []string 字体文件列表
|
||
func FileMatchNames(matches []FileMatch) []string {
|
||
names := make([]string, 0, len(matches))
|
||
seen := make(map[string]bool, len(matches))
|
||
for _, match := range matches {
|
||
key := strings.ToLower(match.Name)
|
||
if !seen[key] {
|
||
seen[key] = true
|
||
names = append(names, match.Name)
|
||
}
|
||
}
|
||
return names
|
||
}
|
||
|
||
// fileStyleRank 获取字体文件样式匹配等级
|
||
// 入参: suffix 样式后缀, bold 是否粗体, italic 是否斜体
|
||
// 返回: int 样式匹配等级
|
||
func fileStyleRank(suffix string, bold, italic bool) int {
|
||
fileBold, fileItalic := fileStyleFromSuffix(suffix)
|
||
rank := 0
|
||
if fileBold != bold {
|
||
rank += 2
|
||
}
|
||
if fileItalic != italic {
|
||
rank += 2
|
||
}
|
||
if !bold && !italic && !fileBold && !fileItalic && suffix != "" && !fileRegularSuffix(suffix) {
|
||
rank++
|
||
}
|
||
return rank
|
||
}
|
||
|
||
// fileStyleFromSuffix 获取样式后缀对应的字体样式
|
||
// 入参: suffix 样式后缀
|
||
// 返回: bool 是否粗体, bool 是否斜体
|
||
func fileStyleFromSuffix(suffix string) (bool, bool) {
|
||
bold := suffix == "b" ||
|
||
suffix == "bd" ||
|
||
suffix == "bold" ||
|
||
suffix == "bi" ||
|
||
suffix == "bolditalic" ||
|
||
suffix == "boldoblique"
|
||
italic := suffix == "i" ||
|
||
suffix == "it" ||
|
||
suffix == "italic" ||
|
||
suffix == "oblique" ||
|
||
suffix == "bi" ||
|
||
suffix == "bolditalic" ||
|
||
suffix == "boldoblique"
|
||
return bold, italic
|
||
}
|
||
|
||
// fileRegularSuffix 判断是否为常规样式后缀
|
||
// 入参: suffix 样式后缀
|
||
// 返回: bool 是否为常规样式后缀
|
||
func fileRegularSuffix(suffix string) bool {
|
||
switch suffix {
|
||
case "r", "regular", "normal", "常规":
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// fileKnownStyleSuffix 判断是否为已知样式后缀
|
||
// 入参: suffix 样式后缀
|
||
// 返回: bool 是否为已知样式后缀
|
||
func fileKnownStyleSuffix(suffix string) bool {
|
||
switch suffix {
|
||
case "r", "regular", "normal", "常规",
|
||
"b", "bd", "bold",
|
||
"i", "it", "italic", "oblique",
|
||
"bi", "bolditalic", "boldoblique":
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|