diff options
Diffstat (limited to 'src/fcint.h')
| -rw-r--r-- | src/fcint.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/fcint.h b/src/fcint.h index 106a38b..4dca3c5 100644 --- a/src/fcint.h +++ b/src/fcint.h @@ -231,6 +231,37 @@ typedef struct _FcGlyphName { FcChar8 name[1]; /* name extends beyond struct */ } FcGlyphName; +/* + * To perform case-insensitive string comparisons, a table + * is used which holds three different kinds of folding data. + * + * The first is a range of upper case values mapping to a range + * of their lower case equivalents. Within each range, the offset + * between upper and lower case is constant. + * + * The second is a range of upper case values which are interleaved + * with their lower case equivalents. + * + * The third is a set of raw unicode values mapping to a list + * of unicode values for comparison purposes. This allows conversion + * of ß to "ss" so that SS, ss and ß all match. A separate array + * holds the list of unicode values for each entry. + * + * These are packed into a single table. Using a binary search, + * the appropriate entry can be located. + */ + +#define FC_CASE_FOLD_RANGE 0 +#define FC_CASE_FOLD_EVEN_ODD 1 +#define FC_CASE_FOLD_FULL 2 + +typedef struct _FcCaseFold { + FcChar32 upper; + FcChar16 method : 2; + FcChar16 count : 14; + short offset; /* lower - upper for RANGE, table id for FULL */ +} FcCaseFold; + #define FC_MAX_FILE_LEN 4096 /* @@ -746,4 +777,7 @@ FcStrUsesHome (const FcChar8 *s); FcChar8 * FcStrLastSlash (const FcChar8 *path); +FcChar32 +FcStrHashIgnoreCase (const FcChar8 *s); + #endif /* _FC_INT_H_ */ |