| 1 | #ifndef UNITOOL_H
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| 2 | #define UNITOOL_H
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| 3 |
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| 4 | #ifdef __cplusplus
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| 5 | extern "C" {
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| 6 | #endif
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| 7 |
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| 8 |
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| 9 | /* This module is based on Unicode 2.1 */
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| 10 |
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| 11 |
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| 12 | /* parse_utf8_char parses the next utf-8 character, placing its
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| 13 | * unicode equivalent in *value. The length of the utf-8 character
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| 14 | * is returned. end is the address of the last character. */
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| 15 | int parse_utf8_char (const unsigned char *here,
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| 16 | const unsigned char *end,
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| 17 | unsigned short *value);
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| 18 |
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| 19 | /* output_utf8_char encodes a unicode character as a UTF-8 character.
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| 20 | * The length of the encoding is returned. If the string was not
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| 21 | * long enough to encode the character 0 is returned. end is the
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| 22 | * address of the last character */
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| 23 | int output_utf8_char (unsigned short value,
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| 24 | unsigned char *here,
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| 25 | unsigned char *end);
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| 26 |
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| 27 | /* decompose_str will decompose a unicode string into its canonical
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| 28 | * equivalents. NULL is returned if the input array was not
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| 29 | * large enough to contain the fully decomposed string (the array
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| 30 | * will be in a correct, but partially decomposed state). The input
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| 31 | * must be null-terminated. */
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| 32 | unsigned short *decompose_str (unsigned short *input,
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| 33 | int max_output_len);
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| 34 |
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| 35 | /* tests to see whether 'value' is a valid Unicode letter */
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| 36 | int is_unicode_letter (unsigned short value);
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| 37 |
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| 38 | /* tests to see whether 'value' is a valid Unicode digit */
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| 39 | int is_unicode_digit (unsigned short value);
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| 40 |
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| 41 | /* tests to see whether 'value' is a valid Unicode letter or
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| 42 | * digit */
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| 43 | int is_unicode_letdig (unsigned short value);
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| 44 |
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| 45 | /* tests to see whether 'value' is a valid space
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| 46 | * The test includes both "C" spaces and "Unicode" spaces, i.e.
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| 47 | * form-feed, newline, carriage return, horizontal tab,
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| 48 | * vertical tab, and the Zs, Zl, and Zp Unicode categorizations */
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| 49 | int is_unicode_space (unsigned short value);
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| 50 |
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| 51 | /* returns the length of the unicode string */
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| 52 | int unicode_strlen (const unsigned short *str);
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| 53 |
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| 54 | /* returns the length of the unicode string, up to a maximum */
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| 55 | int unicode_strnlen (const unsigned short *str, int max_length);
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| 56 |
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| 57 | /* returns the upper-case equivalent of value */
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| 58 | unsigned short unicode_toupper (unsigned short value);
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| 59 |
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| 60 | /* returns the lower-case equivalent of value */
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| 61 | unsigned short unicode_tolower (unsigned short value);
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| 62 |
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| 63 | /* returns the simplified Chinese character equivalent of
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| 64 | * another Chinese character */
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| 65 | unsigned short unicode_tosimplified (unsigned short value);
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| 66 |
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| 67 |
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| 68 | /* converts a utf-8 word (string with length stored in the first byte
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| 69 | * to a Unicode array. To handle all situations the output buffer should
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| 70 | * be 256 unsigned shorts long. The output will also have the length as
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| 71 | * the first entry. */
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| 72 | unsigned short *utf8_word_to_unicode (const unsigned char *input,
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| 73 | unsigned short *output,
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| 74 | int max_output_length);
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| 75 |
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| 76 | /* converts a unicode word buffer (with the length stored in the
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| 77 | * entry) to a utf8 encoded word output (with the length stored in
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| 78 | * the first byte. Only 255 bytes (not characters) can be stored
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| 79 | * in the output. */
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| 80 | unsigned char *unicode_to_utf8_word (const unsigned short *input,
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| 81 | unsigned char *output,
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| 82 | int max_output_length);
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| 83 |
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| 84 | #ifdef __cplusplus
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| 85 | }
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| 86 | #endif
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| 87 |
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| 88 | #endif
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