Commit Graph
7 Commits
Author SHA1 Message Date
dotCooCoo 11adb715b5 Place: a Word .doc document with too many property runs, paragraphs or properties is refused
A bin table that lists more than 100,000 runs of character or of paragraph
properties is refused while its pages are read. Every paragraph now counts
against the 100,000-paragraph limit, hidden and deleted ones and those in
field instructions included, and so does every line break. The properties
of the styles and of the property runs are read from one budget of 16 MiB,
and a document with more is refused.

Text inside a field's instructions is found with a count of the fields
open in their instructions instead of a search of the open fields for each
character.
2026-11-02 12:03:59 +07:00
dotCooCoo a6db4c9112 Place: a Word .doc style sheet that holds fewer styles than it counts is refused
Stshif.cstd counts the LPStd records of the style sheet and must be less than
0x0FFE. A sheet that ended before cstd records was read as far as it went, and
paragraphs in the missing styles were placed with the document defaults; a
cstd of 0x0FFE or more was cut to 0x0FFE. Both are now refused as a damaged
style sheet.
2026-11-02 12:03:58 +07:00
dotCooCoo 22218e9097 Place: a Word .doc paragraph's own indent holds over its style's
A paragraph style can set a logical start or end indent and the paragraph
itself only a physical left or right one, or the other way round. The
indent applied last now holds, after the sides are mapped for the
paragraph's direction; before, the logical indent always held, so a
paragraph's own indent was lost under its style's.
2026-11-02 12:03:58 +07:00
dotCooCoo ecd184510c Place: Word .doc styles are resolved once and damaged property tables are refused
Each style's formatting is now worked out once, on top of the style it
is based on, and each property run's formatting once, so a document with
many hidden paragraphs or long style chains no longer resolves the
chains again for every paragraph and run. Character styles are applied
as a change to the paragraph's formatting.

A bin table whose file positions do not rise, a property page listed
twice, pages whose runs overlap, and styles based on each other in a
loop are refused as damaged, as MS-DOC requires (PlcBteChpx, ChpxFkp,
StdfBase). Property runs refer to their page instead of copying it.
2026-11-02 12:03:57 +07:00
dotCooCoo 8805fa8214 Place: Word .doc text with a broken surrogate pair is refused, and fields without a result warn
A 16-bit piece holding half of a UTF-16 surrogate pair was placed with
U+FFFD in its place; the document is now refused. A pair split between
two pieces is decoded as one character.

A field with no result (no separator, never ended, or nested past 64)
is left out with its own warning, and the warning about fields placed
as their results is given only for fields that have one.
2026-11-01 07:16:30 +07:00
dotCooCoo 5fdccdf602 Place: Word 97-2003 .doc files place as area type with their formatting
File > Place reads a Word 97-2003 document (a compound file named .doc,
or one that holds a WordDocument stream) and sets its main text as area
type, as it does for .rtf and .docx files. The text comes from the
piece table, in 16-bit Unicode or compressed 8-bit pieces. Formatting
is resolved from the style sheet's default font, the paragraph style,
the character style and the direct character and paragraph properties,
and keeps the same properties the .docx reader maps.

Table cells are separated by tabs and each row is a paragraph, and a
field places as its result. Hidden and deleted text, pictures, headers,
footers, notes, comments and text boxes are left out, and the reply's
warnings name each kind of content left out or changed once. Word 6.0
and Word 95 documents, encrypted documents and documents last saved
with fast save are refused, and so are structures that lie outside
their streams.

The compound file is read with the cfb crate (MIT), which adds one
package to Cargo.lock.
2026-11-01 07:16:29 +07:00
aiongg 83eec43b18 refactor(engine): move tests_*.rs to tests/<topic>.rs 2026-10-26 18:26:56 +00:00