const UNIT *s_end = s + n;
/* Word break property of the last character.
- -1 at the very beginning of the string. */
+ -1 at the very beginning of the string. */
int last_char_prop = -1;
/* Format and Extend characters are ignored; this means, the mostly used
- unit is the complex character (= character with subsequent ignored
- characters).
- Word break property of the last complex character.
- -1 at the very beginning of the string. */
+ unit is the complex character (= character with subsequent ignored
+ characters).
+ Word break property of the last complex character.
+ -1 at the very beginning of the string. */
int last_compchar_prop = -1;
char *last_compchar_ptr = NULL;
/* For recognizing rules involving 3 complex characters:
- Word break property of the second-to-last complex character.
- -1 at the very beginning of the string. */
+ Word break property of the second-to-last complex character.
+ -1 at the very beginning of the string. */
int secondlast_compchar_prop = -1;
/* Don't break inside multibyte characters. */
memset (p, 0, n);
while (s < s_end)
- {
- ucs4_t uc;
- int count = U_MBTOUC_UNSAFE (&uc, s, s_end - s);
- int prop = uc_wordbreak_property (uc);
+ {
+ ucs4_t uc;
+ int count = U_MBTOUC_UNSAFE (&uc, s, s_end - s);
+ int prop = uc_wordbreak_property (uc);
- /* No break at the start of the string. */
- if (last_char_prop >= 0)
- {
- /* No break between CR and LF. */
- if (last_char_prop == WBP_CR && prop == WBP_LF)
- /* *p = 0 */;
- /* Break before and after newlines. */
- else if (last_char_prop >= WBP_NEWLINE
- /* same as:
- last_char_prop == WBP_CR
- || last_char_prop == WBP_LF
- || last_char_prop == WBP_NEWLINE */
- || prop >= WBP_NEWLINE
- /* same as:
- prop == WBP_CR
- || prop == WBP_LF
- || prop == WBP_NEWLINE */)
- *p = 1;
- /* Ignore Format and Extend characters. */
- else if (!(prop == WBP_EXTEND || prop == WBP_FORMAT))
- {
- /* No break in these situations (see UAX #29):
+ /* No break at the start of the string. */
+ if (last_char_prop >= 0)
+ {
+ /* No break between CR and LF. */
+ if (last_char_prop == WBP_CR && prop == WBP_LF)
+ /* *p = 0 */;
+ /* Break before and after newlines. */
+ else if (last_char_prop >= WBP_NEWLINE
+ /* same as:
+ last_char_prop == WBP_CR
+ || last_char_prop == WBP_LF
+ || last_char_prop == WBP_NEWLINE */
+ || prop >= WBP_NEWLINE
+ /* same as:
+ prop == WBP_CR
+ || prop == WBP_LF
+ || prop == WBP_NEWLINE */)
+ *p = 1;
+ /* Ignore Format and Extend characters. */
+ else if (!(prop == WBP_EXTEND || prop == WBP_FORMAT))
+ {
+ /* No break in these situations (see UAX #29):
- secondlast last current
+ secondlast last current
- ALetter (MidLetter | MidNumLet) × ALetter (WB7)
- ALetter × (MidLetter | MidNumLet) ALetter (WB6)
- Numeric (MidNum | MidNumLet) × Numeric (WB11)
- Numeric × (MidNum | MidNumLet) Numeric (WB12)
- ALetter × ALetter (WB5)
- ALetter × Numeric (WB9)
- Numeric × ALetter (WB10)
- Numeric × Numeric (WB8)
- Katakana × Katakana (WB13)
- (ALetter | Numeric | Katakana) × ExtendNumLet (WB13a)
- ExtendNumLet × ExtendNumLet (WB13a)
- ExtendNumLet × (ALetter | Numeric | Katakana) (WB13b)
- */
- /* No break across certain punctuation. Also, disable word
- breaks that were recognized earlier (due to lookahead of
- only one complex character). */
- if ((prop == WBP_ALETTER
- && (last_compchar_prop == WBP_MIDLETTER
- || last_compchar_prop == WBP_MIDNUMLET)
- && secondlast_compchar_prop == WBP_ALETTER)
- || (prop == WBP_NUMERIC
- && (last_compchar_prop == WBP_MIDNUM
- || last_compchar_prop == WBP_MIDNUMLET)
- && secondlast_compchar_prop == WBP_NUMERIC))
- {
- *last_compchar_ptr = 0;
- /* *p = 0; */
- }
- else
- {
- /* Perform a single table lookup. */
- if (uniwbrk_table[last_compchar_prop][prop])
- *p = 1;
- /* else *p = 0; */
- }
- }
- }
+ ALetter (MidLetter | MidNumLet) × ALetter (WB7)
+ ALetter × (MidLetter | MidNumLet) ALetter (WB6)
+ Numeric (MidNum | MidNumLet) × Numeric (WB11)
+ Numeric × (MidNum | MidNumLet) Numeric (WB12)
+ ALetter × ALetter (WB5)
+ ALetter × Numeric (WB9)
+ Numeric × ALetter (WB10)
+ Numeric × Numeric (WB8)
+ Katakana × Katakana (WB13)
+ (ALetter | Numeric | Katakana) × ExtendNumLet (WB13a)
+ ExtendNumLet × ExtendNumLet (WB13a)
+ ExtendNumLet × (ALetter | Numeric | Katakana) (WB13b)
+ */
+ /* No break across certain punctuation. Also, disable word
+ breaks that were recognized earlier (due to lookahead of
+ only one complex character). */
+ if ((prop == WBP_ALETTER
+ && (last_compchar_prop == WBP_MIDLETTER
+ || last_compchar_prop == WBP_MIDNUMLET)
+ && secondlast_compchar_prop == WBP_ALETTER)
+ || (prop == WBP_NUMERIC
+ && (last_compchar_prop == WBP_MIDNUM
+ || last_compchar_prop == WBP_MIDNUMLET)
+ && secondlast_compchar_prop == WBP_NUMERIC))
+ {
+ *last_compchar_ptr = 0;
+ /* *p = 0; */
+ }
+ else
+ {
+ /* Perform a single table lookup. */
+ if (uniwbrk_table[last_compchar_prop][prop])
+ *p = 1;
+ /* else *p = 0; */
+ }
+ }
+ }
- last_char_prop = prop;
- /* Ignore Format and Extend characters, except at the start of the string. */
- if (last_compchar_prop < 0 || !(prop == WBP_EXTEND || prop == WBP_FORMAT))
- {
- secondlast_compchar_prop = last_compchar_prop;
- last_compchar_prop = prop;
- last_compchar_ptr = p;
- }
+ last_char_prop = prop;
+ /* Ignore Format and Extend characters, except at the start of the string. */
+ if (last_compchar_prop < 0 || !(prop == WBP_EXTEND || prop == WBP_FORMAT))
+ {
+ secondlast_compchar_prop = last_compchar_prop;
+ last_compchar_prop = prop;
+ last_compchar_ptr = p;
+ }
- s += count;
- p += count;
- }
+ s += count;
+ p += count;
+ }
}
}
projects / gnulib.git / blobdiff