diff options
Diffstat (limited to 'vendor/nunicode/include/libnu/casemap.h')
| -rw-r--r-- | vendor/nunicode/include/libnu/casemap.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/vendor/nunicode/include/libnu/casemap.h b/vendor/nunicode/include/libnu/casemap.h new file mode 100644 index 0000000000..e851ab40ca --- /dev/null +++ b/vendor/nunicode/include/libnu/casemap.h @@ -0,0 +1,140 @@ +#ifndef NU_TOUPPER_H +#define NU_TOUPPER_H + +#include <stdint.h> + +#include <libnu/config.h> +#include <libnu/defines.h> +#include <libnu/strings.h> +#include <libnu/udb.h> + +#if defined (__cplusplus) || defined (c_plusplus) +extern "C" { +#endif + +/** + * @example folding.c + * @example special_casing.c + */ + +/** Synonim to nu_casemap_read. It is recommended to use + * nu_casemap_read instead. + */ +#define NU_CASEMAP_DECODING_FUNCTION NU_UDB_DECODING_FUNCTION +/** Read (decoding) function for use with transformation results of + * casemapping functions. E.g. nu_casemap_read(nu_tolower(0x0041)); + * will read first codepoint of 'A' transformed to lower case. + */ +#define nu_casemap_read (nu_udb_read) + +/** Casemap codepoint + * + * @ingroup transformations + */ +typedef nu_transformation_t nu_casemapping_t; + +#ifdef NU_WITH_TOUPPER + +/** Return uppercase value of codepoint. Uncoditional casemapping. + * + * @ingroup transformations + * @param codepoint unicode codepoint + * @return uppercase codepoint or 0 if mapping doesn't exist + */ +NU_EXPORT +const char* nu_toupper(uint32_t codepoint); + +/** Return uppercase value of codepoint. Context-sensitivity is not + * implemented internally, returned result is equal to calling nu_toupper() + * on corresponding codepoint. + * + * @ingroup transformations_internal + * @param encoded pointer to encoded string + * @param limit memory limit of encoded string or NU_UNLIMITED + * @param read read (decoding) function + * @param u (optional) codepoint which was (or wasn't) transformed + * @param transform output value of codepoint transformed into uppercase or 0 + * if mapping doesn't exist. Can't be NULL, supposed to be decoded with + * nu_casemap_read + * @param context not used + * @return pointer to the next codepoint in string + */ +NU_EXPORT +const char* _nu_toupper(const char *encoded, const char *limit, nu_read_iterator_t read, + uint32_t *u, const char **transform, + void *context); + +#endif /* NU_WITH_TOUPPER */ + +#ifdef NU_WITH_TOLOWER + +/** Return lowercase value of codepoint. Unconditional casemapping. + * + * @ingroup transformations + * @param codepoint unicode codepoint + * @return lowercase codepoint or 0 if mapping doesn't exist + */ +NU_EXPORT +const char* nu_tolower(uint32_t codepoint); + +/** Return lowercase value of codepoint. Will transform uppercase + * Sigma ('Σ') into final sigma ('ς') if it occurs at string boundary or + * followed by U+0000. Might require single read-ahead when + * encountering Sigma. + * + * @ingroup transformations_internal + * @param encoded pointer to encoded string + * @param limit memory limit of encoded string or NU_UNLIMITED + * @param read read (decoding) function + * @param u (optional) codepoint which was (or wasn't) transformed + * @param transform output value of codepoint transformed into lowercase or 0 + * if mapping doesn't exist. Can't be NULL, supposed to be decoded with + * nu_casemap_read + * @param context not used + * @return pointer to the next codepoint in string + */ +NU_EXPORT +const char* _nu_tolower(const char *encoded, const char *limit, nu_read_iterator_t read, + uint32_t *u, const char **transform, + void *context); + +#endif /* NU_WITH_TOLOWER */ + +#ifdef NU_WITH_TOFOLD + +/** Return value of codepoint with case differences eliminated + * + * @ingroup transformations + * @param codepoint unicode codepoint + * @return casefolded codepoint or 0 if mapping doesn't exist + */ +NU_EXPORT +const char* nu_tofold(uint32_t codepoint); + +/** Return value of codepoint with case differences eliminated. + * Context-sensitivity is not implemented internally, returned result is equal + * to calling nu_tofold() on corresponding codepoint. + * + * @ingroup transformations_internal + * @param encoded pointer to encoded string + * @param limit memory limit of encoded string or NU_UNLIMITED + * @param read read (decoding) function + * @param u (optional) codepoint which was (or wasn't) transformed + * @param transform output value of casefolded codepoint or 0 + * if mapping doesn't exist. Can't be NULL, supposed to be decoded with + * nu_casemap_read + * @param context not used + * @return pointer to the next codepoint in string + */ +NU_EXPORT +const char* _nu_tofold(const char *encoded, const char *limit, nu_read_iterator_t read, + uint32_t *u, const char **transform, + void *context); + +#endif /* NU_WITH_TOFOLD */ + +#if defined (__cplusplus) || defined (c_plusplus) +} +#endif + +#endif /* NU_TOUPPER_H */ |