diff options
author | suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> | 2010-10-13 17:05:42 +0900 |
---|---|---|
committer | suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> | 2010-10-13 17:05:42 +0900 |
commit | c081a4a932503daa6d1d969e62611215d28c5445 (patch) | |
tree | 9162038ac51489517c21959710bcecc0b3cea963 /src/base/ftrfork.c | |
parent | 4b718714186313648a098b823f478ce8c006dc3b (diff) | |
download | freetype2-c081a4a932503daa6d1d969e62611215d28c5445.tar.gz |
[raccess] Grouping resource access rules based on Darwin VFS.
MacOS X/Darwin kernel supports a few tricky methods to access
a resource fork via ANSI C or POSIX interface. Current resource
fork accessor tries all possible methods to support all kernels.
But if a method could open a resource fork but no font is found,
there is no need to try other methods older than tested method.
To determine whether the rule index is for Darwin VFS, a local
function ftrfork.c::raccess_rule_by_darwin_vfs() is introduced.
To use this function in ftobjs.c etc but it should be inlined,
it is exposed by ftbase.h.
* src/base/ftrfork.c (FT_RFork_Rule): New enum type to identify
the rules to access the resource fork.
(raccess_guess_rec): New structure to bind the rule function and
rule enum type.
(FT_Raccess_Guess): The list of the rule functions is replaced by
(raccess_guess_table): This. This is exposed to be used by other
intra module functions.
(raccess_rule_by_darwin_vfs): A function to return a boolean
if the rule specified by the rule index is based on Darwin VFS.
Diffstat (limited to 'src/base/ftrfork.c')
-rw-r--r-- | src/base/ftrfork.c | 80 |
1 files changed, 65 insertions, 15 deletions
diff --git a/src/base/ftrfork.c b/src/base/ftrfork.c index f64d28b26..6df2def77 100644 --- a/src/base/ftrfork.c +++ b/src/base/ftrfork.c @@ -349,6 +349,42 @@ const char *insertion ); + typedef enum FT_RFork_Rule_ { + FT_RFork_Rule_invalid = -2, + FT_RFork_Rule_uknown, /* -1 */ + FT_RFork_Rule_apple_double, + FT_RFork_Rule_apple_single, + FT_RFork_Rule_darwin_ufs_export, + FT_RFork_Rule_darwin_newvfs, + FT_RFork_Rule_darwin_hfsplus, + FT_RFork_Rule_vfat, + FT_RFork_Rule_linux_cap, + FT_RFork_Rule_linux_double, + FT_RFork_Rule_linux_netatalk + } FT_RFork_Rule; + + /* For fast translation between rule index and rule type, + * the macros FT_RFORK_xxx should be kept consistent with + * the raccess_guess_funcs table + */ + typedef struct raccess_guess_rec_ { + raccess_guess_func func; + FT_RFork_Rule type; + } raccess_guess_rec; + + static raccess_guess_rec raccess_guess_table[FT_RACCESS_N_RULES] = + { + { raccess_guess_apple_double, FT_RFork_Rule_apple_double, }, + { raccess_guess_apple_single, FT_RFork_Rule_apple_single, }, + { raccess_guess_darwin_ufs_export, FT_RFork_Rule_darwin_ufs_export, }, + { raccess_guess_darwin_newvfs, FT_RFork_Rule_darwin_newvfs, }, + { raccess_guess_darwin_hfsplus, FT_RFork_Rule_darwin_hfsplus, }, + { raccess_guess_vfat, FT_RFork_Rule_vfat, }, + { raccess_guess_linux_cap, FT_RFork_Rule_linux_cap, }, + { raccess_guess_linux_double, FT_RFork_Rule_linux_double, }, + { raccess_guess_linux_netatalk, FT_RFork_Rule_linux_netatalk, }, + }; + FT_BASE_DEF( void ) FT_Raccess_Guess( FT_Library library, FT_Stream stream, @@ -360,19 +396,6 @@ FT_Long i; - raccess_guess_func funcs[FT_RACCESS_N_RULES] = - { - raccess_guess_apple_double, - raccess_guess_apple_single, - raccess_guess_darwin_ufs_export, - raccess_guess_darwin_newvfs, - raccess_guess_darwin_hfsplus, - raccess_guess_vfat, - raccess_guess_linux_cap, - raccess_guess_linux_double, - raccess_guess_linux_netatalk, - }; - for ( i = 0; i < FT_RACCESS_N_RULES; i++ ) { new_names[i] = NULL; @@ -384,14 +407,41 @@ if ( errors[i] ) continue ; - errors[i] = (funcs[i])( library, stream, base_name, - &(new_names[i]), &(offsets[i]) ); + errors[i] = (raccess_guess_table[i].func)( library, + stream, base_name, + &(new_names[i]), + &(offsets[i]) ); } return; } + static FT_RFork_Rule + raccess_get_rule_type_from_rule_index( FT_UInt rule_index ) + { + if ( rule_index >= FT_RACCESS_N_RULES ) + return FT_RFork_Rule_invalid; + + return raccess_guess_table[rule_index].type; + } + + + FT_LOCAL_DEF( FT_Bool ) + raccess_rule_by_darwin_vfs( FT_UInt rule_index ) + { + switch( raccess_get_rule_type_from_rule_index( rule_index ) ) + { + case FT_RFork_Rule_darwin_newvfs: + case FT_RFork_Rule_darwin_hfsplus: + return TRUE; + + default: + return FALSE; + } + } + + static FT_Error raccess_guess_apple_double( FT_Library library, FT_Stream stream, |