feat: 完成 DOCX 视觉门禁与字体兼容映射

2026-07-31 20:13:19 +08:00
parent 10bc62cee4
commit e5da699ea3
32 changed files with 3015 additions and 17 deletions
@@ -0,0 +1,112 @@
+import type { SfntFontMetadata } from "./font-embedding.js";
+
+export type WordFontFamily =
+  | "auto"
+  | "decorative"
+  | "modern"
+  | "roman"
+  | "script"
+  | "swiss";
+
+export interface WordFontMetadata {
+  panose1: string;
+  charset: string;
+  family: WordFontFamily;
+  pitch: "fixed" | "variable";
+  signature: {
+    usb0: string;
+    usb1: string;
+    usb2: string;
+    usb3: string;
+    csb0: string;
+    csb1: string;
+  };
+}
+
+const codePageCharsets = [
+  { bit: 18, charset: "86" },
+  { bit: 20, charset: "88" },
+  { bit: 17, charset: "80" },
+  { bit: 19, charset: "81" },
+  { bit: 21, charset: "82" },
+  { bit: 16, charset: "DE" },
+  { bit: 6, charset: "B2" },
+  { bit: 5, charset: "B1" },
+  { bit: 7, charset: "BA" },
+  { bit: 2, charset: "CC" },
+  { bit: 3, charset: "A1" },
+  { bit: 4, charset: "A2" },
+  { bit: 31, charset: "02" }
+] as const;
+
+function uint32Hex(value: number) {
+  return value.toString(16).toUpperCase().padStart(8, "0");
+}
+
+function byteHex(value: number) {
+  return value.toString(16).toUpperCase().padStart(2, "0");
+}
+
+function hasCodePageBit(
+  ranges: SfntFontMetadata["codePageRanges"],
+  bit: number
+) {
+  const range = ranges[Math.floor(bit / 32)] ?? 0;
+  return ((range >>> (bit % 32)) & 1) === 1;
+}
+
+function resolveCharset(metadata: SfntFontMetadata) {
+  return (
+    codePageCharsets.find(({ bit }) =>
+      hasCodePageBit(metadata.codePageRanges, bit)
+    )?.charset ?? "00"
+  );
+}
+
+function resolveFamily(metadata: SfntFontMetadata): WordFontFamily {
+  if (metadata.fixedPitch) {
+    return "modern";
+  }
+  const [familyType, serifStyle] = metadata.panose;
+  if (familyType === 3) {
+    return "script";
+  }
+  if (familyType === 4) {
+    return "decorative";
+  }
+  if (familyType !== 2) {
+    return "auto";
+  }
+  if (serifStyle >= 11 && serifStyle <= 13) {
+    return "swiss";
+  }
+  if (
+    (serifStyle >= 2 && serifStyle <= 10) ||
+    serifStyle === 14 ||
+    serifStyle === 15
+  ) {
+    return "roman";
+  }
+  return "auto";
+}
+
+export function createWordFontMetadata(
+  metadata: SfntFontMetadata
+): WordFontMetadata {
+  const [usb0, usb1, usb2, usb3] = metadata.unicodeRanges;
+  const [csb0, csb1] = metadata.codePageRanges;
+  return {
+    panose1: metadata.panose.map(byteHex).join(""),
+    charset: resolveCharset(metadata),
+    family: resolveFamily(metadata),
+    pitch: metadata.fixedPitch ? "fixed" : "variable",
+    signature: {
+      usb0: uint32Hex(usb0),
+      usb1: uint32Hex(usb1),
+      usb2: uint32Hex(usb2),
+      usb3: uint32Hex(usb3),
+      csb0: uint32Hex(csb0),
+      csb1: uint32Hex(csb1)
+    }
+  };
+}