Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder | |
61507e3c | 3 | * Copyright (C) 2004, 2007 Richard Kettlewell |
460b9539 | 4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <string.h> | |
25 | #include <stddef.h> | |
26 | ||
27 | #include "mem.h" | |
28 | #include "vector.h" | |
29 | #include "table.h" | |
30 | #include "words.h" | |
31 | #include "utf8.h" | |
61507e3c RK |
32 | #include "log.h" |
33 | #include "charset.h" | |
460b9539 | 34 | |
61507e3c | 35 | #include "unidata.h" |
e5a5a138 | 36 | #include "unicode.h" |
460b9539 | 37 | |
38 | const char *casefold(const char *ptr) { | |
e5a5a138 | 39 | return utf8_casefold_canon(ptr, strlen(ptr), 0); |
460b9539 | 40 | } |
41 | ||
14523635 | 42 | static enum unicode_General_Category cat(uint32_t c) { |
61507e3c | 43 | if(c < UNICODE_NCHARS) { |
e5a5a138 | 44 | const struct unidata *const ud = &unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS]; |
14523635 | 45 | return ud->general_category; |
61507e3c | 46 | } else |
14523635 | 47 | return unicode_General_Category_Cn; |
460b9539 | 48 | } |
49 | ||
50 | /* XXX this is a bit kludgy */ | |
51 | ||
52 | char **words(const char *s, int *nvecp) { | |
53 | struct vector v; | |
54 | struct dynstr d; | |
55 | const char *start; | |
56 | uint32_t c; | |
57 | int in_word = 0; | |
58 | ||
59 | vector_init(&v); | |
60 | while(*s) { | |
61 | start = s; | |
62 | PARSE_UTF8(s, c, return 0); | |
63 | /* special cases first */ | |
64 | switch(c) { | |
65 | case '/': | |
66 | case '.': | |
67 | case '+': | |
68 | case '&': | |
69 | case ':': | |
70 | case '_': | |
71 | case '-': | |
72 | goto separator; | |
73 | } | |
74 | /* do the rest on category */ | |
75 | switch(cat(c)) { | |
14523635 RK |
76 | case unicode_General_Category_Ll: |
77 | case unicode_General_Category_Lm: | |
78 | case unicode_General_Category_Lo: | |
79 | case unicode_General_Category_Lt: | |
80 | case unicode_General_Category_Lu: | |
81 | case unicode_General_Category_Nd: | |
82 | case unicode_General_Category_Nl: | |
83 | case unicode_General_Category_No: | |
84 | case unicode_General_Category_Sc: | |
85 | case unicode_General_Category_Sk: | |
86 | case unicode_General_Category_Sm: | |
87 | case unicode_General_Category_So: | |
460b9539 | 88 | /* letters, digits and symbols are considered to be part of |
89 | * words */ | |
90 | if(!in_word) { | |
91 | dynstr_init(&d); | |
92 | in_word = 1; | |
93 | } | |
94 | dynstr_append_bytes(&d, start, s - start); | |
95 | break; | |
96 | ||
14523635 RK |
97 | case unicode_General_Category_Cc: |
98 | case unicode_General_Category_Cf: | |
99 | case unicode_General_Category_Co: | |
100 | case unicode_General_Category_Cs: | |
101 | case unicode_General_Category_Zl: | |
102 | case unicode_General_Category_Zp: | |
103 | case unicode_General_Category_Zs: | |
104 | case unicode_General_Category_Pe: | |
105 | case unicode_General_Category_Ps: | |
460b9539 | 106 | separator: |
107 | if(in_word) { | |
108 | dynstr_terminate(&d); | |
109 | vector_append(&v, d.vec); | |
110 | in_word = 0; | |
111 | } | |
112 | break; | |
113 | ||
14523635 RK |
114 | case unicode_General_Category_Mc: |
115 | case unicode_General_Category_Me: | |
116 | case unicode_General_Category_Mn: | |
117 | case unicode_General_Category_Pc: | |
118 | case unicode_General_Category_Pd: | |
119 | case unicode_General_Category_Pf: | |
120 | case unicode_General_Category_Pi: | |
121 | case unicode_General_Category_Po: | |
122 | case unicode_General_Category_Cn: | |
460b9539 | 123 | /* control and punctuation is completely ignored */ |
124 | break; | |
125 | ||
126 | } | |
127 | } | |
128 | if(in_word) { | |
129 | /* pick up the final word */ | |
130 | dynstr_terminate(&d); | |
131 | vector_append(&v, d.vec); | |
132 | } | |
133 | vector_terminate(&v); | |
134 | if(nvecp) | |
135 | *nvecp = v.nvec; | |
136 | return v.vec; | |
137 | } | |
138 | ||
139 | /* | |
140 | Local Variables: | |
141 | c-basic-offset:2 | |
142 | comment-column:40 | |
143 | End: | |
144 | */ |