# Base-14 font data — provenance
## `Foxit*.cff` (14 files)
**What they are.** The fourteen faces PDFium substitutes for the PDF base-14
standard fonts when a document names one without embedding it: four Courier,
four Helvetica, four Times, plus Symbol and ZapfDingbats. They are the rung of
the substitution ladder *above* the two Multiple-Master fallbacks
(below) — a document that names a
base-14 font by name lands on one of these, and only an unrecognised name falls
through to `FoxitSansMM` / `FoxitSerifMM`.
**Where they come from.** The read-only C++ oracle checkout, as C++ array
initializers under `core/fxge/fontdata/chromefontdata/`:
| `FoxitFixed.cff` | `FoxitFixed.cpp` | `kFoxitFixedFontData` | 17 597 | `ChromFixedOTF` |
| `FoxitFixedBold.cff` | `FoxitFixedBold.cpp` | `kFoxitFixedBoldFontData` | 18 055 | `ChromFixedOTF-Bold` |
| `FoxitFixedBoldItalic.cff` | `FoxitFixedBoldItalic.cpp` | `kFoxitFixedBoldItalicFontData` | 19 151 | `ChromFixedOTF-BoldItalic` |
| `FoxitFixedItalic.cff` | `FoxitFixedItalic.cpp` | `kFoxitFixedItalicFontData` | 18 746 | `ChromFixedOTF-Italic` |
| `FoxitSans.cff` | `FoxitSans.cpp` | `kFoxitSansFontData` | 15 025 | `ChromSansOTF` |
| `FoxitSansBold.cff` | `FoxitSansBold.cpp` | `kFoxitSansBoldFontData` | 16 344 | `ChromSansOTF-Bold` |
| `FoxitSansBoldItalic.cff` | `FoxitSansBoldItalic.cpp` | `kFoxitSansBoldItalicFontData` | 16 418 | `ChromSansPS-BoldItalic` |
| `FoxitSansItalic.cff` | `FoxitSansItalic.cpp` | `kFoxitSansItalicFontData` | 16 339 | `ChromSansOTF-Italic` |
| `FoxitSerif.cff` | `FoxitSerif.cpp` | `kFoxitSerifFontData` | 19 469 | `ChromSerifOTF` |
| `FoxitSerifBold.cff` | `FoxitSerifBold.cpp` | `kFoxitSerifBoldFontData` | 19 395 | `ChromSerifOTF-Bold` |
| `FoxitSerifBoldItalic.cff` | `FoxitSerifBoldItalic.cpp` | `kFoxitSerifBoldItalicFontData` | 20 733 | `ChromSerifOTF-BoldItalic` |
| `FoxitSerifItalic.cff` | `FoxitSerifItalic.cpp` | `kFoxitSerifItalicFontData` | 21 227 | `ChromSerifOTF-Italic` |
| `FoxitSymbol.cff` | `FoxitSymbol.cpp` | `kFoxitSymbolFontData` | 16 729 | `ChromSymbolOTF` |
| `FoxitDingbats.cff` | `FoxitDingbats.cpp` | `kFoxitDingbatsFontData` | 29 513 | `ChromDingbatsOTF` |
The row order is `CFX_StandardFont::Index` order (`core/fxge/cfx_standardfont.h`),
which is also the order of `kFoxitFonts` and `kBase14FontNames` in
`core/fxge/cfx_standardfont.cpp`.
**How to regenerate them.** From the workspace root, with the oracle checkout
present:
```
uv run crates/pdfrum-font/fontdata/extract.py [ORACLE_ROOT]
```
The script verifies each blob's length twice — against the `std::array<uint8_t,
N>` bound declared in `chromefontdata.h`, and against the length hard-coded in
the script — so a silent mis-extraction, or an oracle rebase that changed a
blob, fails loudly instead of writing a truncated file. Note that unlike the MM
sources these `.cpp` files use minimal-width hex literals (`0x1`, `0xd`), so the
byte regex must accept one or two digits; a two-digit-only regex silently drops
roughly a sixth of every blob.
**License.** PDFium, BSD 3-clause — `LICENSE` at the oracle checkout root
(`$PDFRUM_ORACLE_CHECKOUT/LICENSE`, first 27 lines; the Apache text that
follows in that file covers other third-party components, not `core/fxge`).
There is no separate LICENSE file under `core/fxge/fontdata`. Each `.cpp`
carries the standard two-part PDFium header:
```
// Copyright 2014 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
```
**What they contain.** Each file is a bare CFF font (no OpenType wrapper): the
CFF header `01 00 04 02` — major 1, minor 0, hdrSize 4, offSize 2 — followed by
the Name INDEX carrying the `Chrom*` FontName above. They are consumed by
FreeType as `FT_New_Memory_Face` inputs in the C++ oracle, and here by
`read_fonts::ps::cff` — **not** by `skrifa`, whose `FontRef` requires a table
directory and therefore cannot open a bare CFF at all. That is why
`glyphs::Face` carries two backends.
## `FoxitSansMM.pfb`, `FoxitSerifMM.pfb`
**What they are.** The two Multiple-Master Type 1 faces PDFium ships as the
terminal rung of its font-substitution ladder: when a document names a font
that neither the embedded stream nor the system can supply, one of these two is
what draws it, instantiated at whatever weight and width the substitution
decided on. They are the single reason `pdfrum-type1` must implement Multiple
Master at all.
**Where they come from.** The read-only C++ oracle checkout, as C++ array
initializers:
| `FoxitSansMM.pfb` | `core/fxge/fontdata/chromefontdata/FoxitSansMM.cpp` | `kFoxitSansMMFontData` | 66 919 |
| `FoxitSerifMM.pfb` | `core/fxge/fontdata/chromefontdata/FoxitSerifMM.cpp` | `kFoxitSerifMMFontData` | 113 417 |
**How to regenerate them.** From the workspace root, with the oracle checkout
present:
```
uv run crates/pdfrum-font/fontdata/extract-mm.py [ORACLE_ROOT]
```
The script verifies each blob's length against the `std::array<uint8_t, N>`
bound declared in `chromefontdata.h`, so a silent mis-extraction fails loudly.
Byte-for-byte identical output is expected; the fixtures are committed so the
test suite runs without the oracle checkout.
**License.** PDFium, BSD 3-clause (`LICENSE` in the oracle checkout). Original
code copyright 2014 Foxit Software Inc.; the PFB blobs themselves are
`ChromeSansMM` / `ChromeSerifMM` 001.000, dated 2006. Redistributable
under BSD-3-Clause.
**What they contain.** Both are PFB (`80 01 …`), `/FontType 1`,
`/FontMatrix [0.001 0 0 0.001 0 0]`, 230 glyphs, two design axes
(`/BlendAxisTypes [/Weight /Width]`) over four masters at the unit-square
corners:
| Sans | `[[50 0][1450 1]]` | `[[50 0][1450 1]]` | `[0.3158 0.1349 0.3849 0.1644]` |
| Serif | `[[110 0][790 1]]` | `[[100 0][900 1]]` | `[0.2702 0.1048 0.4504 0.1746]` |