Borrowing header stuff written for cairo, fontconfig now exposes in the
shared library only the symbols which are included in the public header
files. All private symbols are hidden using suitable compiler directives.
A few new public functions were required for the fontconfig utility programs
(fc-cat and fc-cache) so those were added, bumping the .so minor version number
in the process.
Use the version number inside the cache file to mark backward compatible
changes while continuing to reserve the filename number for incompatible
changes.
Instead of passing directory information around in separate variables,
collect it all in an FcCache structure. Numerous internal and tool
interfaces changed as a result of this.
Charsets are now pre-frozen before being serialized. This causes them to
share across multiple fonts in the same cache.
Automatically list all font directories when no arguments are given to
fc-cat. Also add -r option to recurse from specified cache directories.
fc-cat also now prints the cache filename in verbose mode, along with the
related directory name.
Validate cache contents and skip broken caches, looking down cache path for
valid ones.
Every time a directory is scanned, it will be written to a cache file if
possible, so fc-cache doesn't need to re-write the cache file. This makes
detecting when the cache was generated a bit tricky, so we guess that if the
cache wasn't valid before running and is valid afterwards, the cache file
was written.
Also, allow empty charsets to be serialized with null leaves/numbers.
Eliminate a leak in FcEdit by switching to FcObject sooner.
Call FcFini from fc-match to make valgrind happy.
FcCharSetSerialize was computing the offset to the unserialized leaf,
which left it pointing at random data when the cache was reloaded.
fc-cat has been updated to work with the new cache structure.
Various debug messages extended to help diagnose serialization errors.
Replace all of the bank/id pairs with simple offsets, recode several
data structures to always use offsets inside the library to avoid
conditional paths. Exposed data structures use pointers to hold offsets,
setting the low bit to distinguish between offset and pointer.
Use offset-based data structures for lang charset encodings; eliminates
separate data structure format for that file.
Much testing will be needed; offsets are likely not detected everywhere in
the library yet.
With the removal of the in-directory cache files, and the addition of
per-user cache directories, there is no longer any reason to preserve the
giant global cache file. Eliminating of this unifies the cache structure
and simplifies the overall caching strategies greatly.
Normalized directory names offer protection against looped directory trees
but cost enormous numbers of system calls (stat per file in the hierarchy).
Also, cache file directory name contents are validated each time the
directory is modified, don't re-validate every time the cache file is loaded
with an access and stat call.
Previous policy was to attempt to update the cache in place and bail if that
didn't work. Now, search for the first writable directory and place the
cache file there instead. Furthermore, on startup, search directory list for
valid cache files instead of bailing if the first found cache file wasn't
valid.
permitting cache files to be stored in font dirs. Bump cache magic.
Don't include /fonts.cache-2 in cache hash construction.
reviewed by: Patrick Lam <plam@mit.edu>
Check if pattern is not null before using it (Coverity defect #1883).
Fix memory leak with hash collision (Coverity defect #1829).
Fix memory leak when bail cases (Coverity defect #1828).
Don't leak directory name (Coverity defect #1827).
reviewed by: plam
Make fontconfig compile under MinGW:
1) remove unneeded #includes;
2) make use of mmap and sysconf conditional;
3) replace rand_r by srand/rand if needed;
4) use chsize instead of ftruncate; and
5) update libtool exports file
machine into FcGlobalCacheDir to avoid doing inappropriate operations
on global dir entries, e.g. writing out an out-of-date cache entry.
reviewed by: plam
Keith Packard
Patrick Lam
Keith Packard