158 lines
7.5 KiB
Python
158 lines
7.5 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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字体服务 - 获取服务器上可用的字体列表
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"""
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import logging
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import os
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import platform
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import subprocess
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from functools import lru_cache
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from typing import Dict, List, Optional, Set
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logger = logging.getLogger(__name__)
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class FontService:
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"""字体服务类"""
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CHINESE_FONTS: List[Dict[str, str]] = [
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# 宋体系列
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{"label": "宋体 (SimSun)", "value": "SimSun, STSong, Songti SC, Noto Serif CJK SC, serif", "family": "SimSun"},
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{"label": "华文宋体 (STSong)", "value": "STSong, SimSun, Songti SC, Noto Serif CJK SC, serif", "family": "STSong"},
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{"label": "Noto 宋体 (Noto Serif CJK)", "value": "Noto Serif CJK SC, SimSun, STSong, serif", "family": "Noto Serif CJK SC"},
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# 黑体系列
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{"label": "黑体 (SimHei)", "value": "SimHei, STHeiti, Heiti SC, Noto Sans CJK SC, sans-serif", "family": "SimHei"},
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{"label": "Noto 黑体 (Noto Sans CJK)", "value": "Noto Sans CJK SC, SimHei, STHeiti, sans-serif", "family": "Noto Sans CJK SC"},
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{"label": "思源黑体 (Source Han Sans)", "value": "Source Han Sans CN, Noto Sans CJK SC, SimHei, sans-serif", "family": "Source Han Sans CN"},
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{"label": "微软雅黑 (Microsoft YaHei)", "value": "Microsoft YaHei, Noto Sans CJK SC, SimHei, sans-serif", "family": "Microsoft YaHei"},
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{"label": "苹方 (PingFang SC)", "value": "PingFang SC, Noto Sans CJK SC, SimHei, sans-serif", "family": "PingFang SC"},
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{"label": "文泉驿微米黑", "value": "WenQuanYi Micro Hei, Noto Sans CJK SC, sans-serif", "family": "WenQuanYi Micro Hei"},
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{"label": "文泉驿正黑", "value": "WenQuanYi Zen Hei, Noto Sans CJK SC, sans-serif", "family": "WenQuanYi Zen Hei"},
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# 楷体系列
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{"label": "楷体 (KaiTi)", "value": "KaiTi, STKaiti, Kaiti SC, serif", "family": "KaiTi"},
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{"label": "华文楷体 (STKaiti)", "value": "STKaiti, KaiTi, Kaiti SC, serif", "family": "STKaiti"},
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# 仿宋系列
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{"label": "仿宋 (FangSong)", "value": "FangSong, STFangsong, serif", "family": "FangSong"},
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{"label": "华文仿宋 (STFangsong)", "value": "STFangsong, FangSong, serif", "family": "STFangsong"},
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# 其他
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{"label": "华文细黑 (STXihei)", "value": "STXihei, Noto Sans CJK SC, sans-serif", "family": "STXihei"},
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{"label": "冬青黑体 (Hiragino Sans GB)", "value": "Hiragino Sans GB, Noto Sans CJK SC, sans-serif", "family": "Hiragino Sans GB"},
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]
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ENGLISH_FONTS: List[Dict[str, str]] = [
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{"label": "Arial", "value": "Arial, sans-serif", "family": "Arial"},
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{"label": "Helvetica", "value": "Helvetica, Arial, sans-serif", "family": "Helvetica"},
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{"label": "Times New Roman", "value": "Times New Roman, serif", "family": "Times New Roman"},
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{"label": "Georgia", "value": "Georgia, serif", "family": "Georgia"},
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{"label": "Verdana", "value": "Verdana, sans-serif", "family": "Verdana"},
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{"label": "Courier New", "value": "Courier New, monospace", "family": "Courier New"},
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]
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@classmethod
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def _get_fc_list_families(cls) -> Optional[Set[str]]:
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"""通过 fc-list 获取系统已安装的字体族名"""
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try:
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result = subprocess.run(
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["fc-list", "--format", "%{family}\n"],
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capture_output=True, text=True, timeout=10,
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)
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if result.returncode != 0:
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return None
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families: Set[str] = set()
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for line in result.stdout.splitlines():
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for part in line.split(","):
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families.add(part.strip())
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return families
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except (FileNotFoundError, subprocess.TimeoutExpired, OSError):
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return None
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@classmethod
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def _scan_font_files(cls) -> Set[str]:
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"""扫描字体目录，返回字体文件名集合（备用方案）"""
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system = platform.system()
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dirs: List[str] = []
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if system == "Darwin":
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dirs = ["/System/Library/Fonts", "/Library/Fonts", os.path.expanduser("~/Library/Fonts")]
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elif system == "Linux":
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dirs = ["/usr/share/fonts", "/usr/local/share/fonts", os.path.expanduser("~/.fonts")]
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elif system == "Windows":
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dirs = [os.path.join(os.environ.get("WINDIR", r"C:\Windows"), "Fonts")]
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font_names: Set[str] = set()
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extensions = {".ttf", ".ttc", ".otf", ".woff", ".woff2"}
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for font_dir in dirs:
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if not os.path.exists(font_dir):
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continue
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try:
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for root, _, files in os.walk(font_dir):
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for file in files:
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if os.path.splitext(file)[1].lower() in extensions:
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font_names.add(os.path.splitext(file)[0])
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except (PermissionError, OSError):
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continue
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return font_names
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@classmethod
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def _is_font_available(cls, family: str, fc_families: Optional[Set[str]], file_names: Set[str]) -> bool:
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"""判断字体是否在系统中可用"""
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if fc_families is not None:
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family_lower = family.lower()
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for fc_fam in fc_families:
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if family_lower == fc_fam.lower():
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return True
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return False
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family_normalized = family.lower().replace(" ", "")
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for name in file_names:
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name_normalized = name.lower().replace(" ", "").replace("-", "").replace("_", "")
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if family_normalized in name_normalized or name_normalized in family_normalized:
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return True
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return False
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@classmethod
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@lru_cache(maxsize=1)
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def get_available_fonts(cls) -> List[Dict[str, str]]:
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"""获取服务器上可用的字体列表"""
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result: List[Dict[str, str]] = [{"label": "默认字体", "value": ""}]
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fc_families = cls._get_fc_list_families()
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file_names = cls._scan_font_files() if fc_families is None else set()
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if fc_families is not None:
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logger.info(f"[字体服务] 通过 fc-list 检测到 {len(fc_families)} 个字体族")
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else:
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logger.info(f"[字体服务] fc-list 不可用，使用文件名扫描检测到 {len(file_names)} 个字体文件")
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added_labels: Set[str] = set()
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for font in cls.CHINESE_FONTS:
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if cls._is_font_available(font["family"], fc_families, file_names):
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if font["label"] not in added_labels:
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result.append({"label": font["label"], "value": font["value"]})
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added_labels.add(font["label"])
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if len(result) <= 1:
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logger.warning("[字体服务] 未检测到中文字体，使用平台默认列表")
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system = platform.system()
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if system == "Darwin":
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defaults = ["PingFang SC", "STSong", "STKaiti", "Hiragino Sans GB"]
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elif system == "Linux":
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defaults = ["Noto Sans CJK SC", "Noto Serif CJK SC", "WenQuanYi Zen Hei", "WenQuanYi Micro Hei"]
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else:
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defaults = ["Microsoft YaHei", "SimSun", "SimHei", "KaiTi", "FangSong"]
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for font in cls.CHINESE_FONTS:
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if font["family"] in defaults and font["label"] not in added_labels:
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result.append({"label": font["label"], "value": font["value"]})
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added_labels.add(font["label"])
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for font in cls.ENGLISH_FONTS:
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result.append({"label": font["label"], "value": font["value"]})
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logger.info(f"[字体服务] 返回 {len(result)} 个字体选项")
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return result
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