feat(文件拆分): 拆分字体图像基础能力

internal/base/font/match.go

@@ -0,0 +1,64 @@
+// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package font
+
+import (
+	"path"
+	"strings"
+)
+
+// fontNameReplacer 移除字体名称匹配时忽略的分隔符
+var fontNameReplacer = strings.NewReplacer(" ", "", "-", "", "_", "", "(", "", ")", "", "（", "", "）", "")
+
+// NormalizeName 规范化字体名称
+// 入参: name 字体名称
+// 返回: string 规范化后的字体名称
+func NormalizeName(name string) string {
+	name = strings.ReplaceAll(name, "\\", "/")
+	name = path.Base(strings.TrimSpace(name))
+	if IsFontFileName(name) {
+		name = strings.TrimSuffix(name, path.Ext(name))
+	}
+	name = strings.ToLower(strings.TrimSpace(name))
+	return fontNameReplacer.Replace(name)
+}
+
+// IsFontFileName 判断是否为字体文件名
+// 入参: name 文件名
+// 返回: bool 是否为字体文件
+func IsFontFileName(name string) bool {
+	switch strings.ToLower(path.Ext(name)) {
+	case ".ttf", ".otf", ".ttc":
+		return true
+	default:
+		return false
+	}
+}
+
+// AppendFontName 追加字体名称
+// 入参: names 字体名称列表, seen 去重映射, name 字体名称
+// 返回: []string 字体名称列表
+func AppendFontName(names []string, seen map[string]bool, name string) []string {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return names
+	}
+	key := NormalizeName(name)
+	if key == "" || seen[key] {
+		return names
+	}
+	seen[key] = true
+	return append(names, name)
+}