1 | /**************************************************************************
|
---|
2 | *
|
---|
3 | * words.cpp -- Functions for parsing out words from the source text
|
---|
4 | * Copyright (C) 1999 Rodger McNab
|
---|
5 | *
|
---|
6 | * This program is free software; you can redistribute it and/or modify
|
---|
7 | * it under the terms of the GNU General Public License as published by
|
---|
8 | * the Free Software Foundation; either version 2 of the License, or
|
---|
9 | * (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This program is distributed in the hope that it will be useful,
|
---|
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
14 | * GNU General Public License for more details.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU General Public License
|
---|
17 | * along with this program; if not, write to the Free Software
|
---|
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
19 | *
|
---|
20 | **************************************************************************/
|
---|
21 |
|
---|
22 | // need this to avoid bizarre compiler problems under VC++ 6.0
|
---|
23 | #if defined (__WIN32__) && !defined (GSDL_USE_IOS_H)
|
---|
24 | # include <iostream>
|
---|
25 | #endif
|
---|
26 |
|
---|
27 | #include "words.h"
|
---|
28 |
|
---|
29 | int MAXNUMERIC = 4;
|
---|
30 |
|
---|
31 | /* Takes the place of the old INAWORD macro. It determines
|
---|
32 | whether a given place in a UTF-8 encoded Unicode string
|
---|
33 | is part of a word. */
|
---|
34 | int inaword_mgpp (const u_char *here, const u_char *end) {
|
---|
35 | unsigned short c;
|
---|
36 | if (parse_utf8_char(here, end, &c) > 0) return is_unicode_letdig (c);
|
---|
37 | return 0;
|
---|
38 | }
|
---|
39 |
|
---|
40 | /* It determines whether a given place in a UTF-8 encoded Unicode string is a unicode space. */
|
---|
41 | int isaspace_mgpp (const u_char *here, const u_char *end)
|
---|
42 | {
|
---|
43 | unsigned short c;
|
---|
44 | if (parse_utf8_char(here, end, &c) > 0) return is_unicode_space(c);
|
---|
45 | return 0;
|
---|
46 | }
|
---|
47 |
|
---|
48 | /* Return a the UTF-8 encoded Unicode string with begining
|
---|
49 | unicode spaces skippend. */
|
---|
50 | u_char *skipspace_mgpp(u_char *here, u_char *end)
|
---|
51 | {
|
---|
52 | unsigned short c;
|
---|
53 | int length;
|
---|
54 | while(here != end) {
|
---|
55 | length = parse_utf8_char(here, end, &c);
|
---|
56 | if (length == 0 || !is_unicode_space(c)) break;
|
---|
57 | here += length;
|
---|
58 | }
|
---|
59 | return here;
|
---|
60 | }
|
---|
61 |
|
---|
62 | const unsigned char *ParseIndexWord (const unsigned char *textHere,
|
---|
63 | const unsigned char *textEnd,
|
---|
64 | UCArray &word) {
|
---|
65 | word.erase (word.begin(), word.end());
|
---|
66 |
|
---|
67 | register int charlength = 0;
|
---|
68 | register int length = 0;
|
---|
69 | register int numeric = 0;
|
---|
70 | unsigned short c;
|
---|
71 |
|
---|
72 | charlength = parse_utf8_char (textHere, textEnd, &c);
|
---|
73 |
|
---|
74 | while (length+charlength <= MAXSTEMLEN && charlength > 0 &&
|
---|
75 | (is_unicode_letter(c) || (is_unicode_digit(c) &&
|
---|
76 | ++numeric <= MAXNUMERIC))) {
|
---|
77 | while (charlength-- > 0) {
|
---|
78 | word.push_back (*textHere++); ++length;
|
---|
79 | }
|
---|
80 | charlength = parse_utf8_char (textHere, textEnd, &c);
|
---|
81 | }
|
---|
82 |
|
---|
83 | return textHere;
|
---|
84 | }
|
---|
85 |
|
---|
86 | const unsigned char *ParseIndexMGWord (const unsigned char *textHere,
|
---|
87 | const unsigned char *textEnd,
|
---|
88 | unsigned char *mgWord) {
|
---|
89 | register int charlength = 0;
|
---|
90 | register int length = 0;
|
---|
91 | register int numeric = 0;
|
---|
92 | unsigned short c;
|
---|
93 |
|
---|
94 | charlength = parse_utf8_char (textHere, textEnd, &c);
|
---|
95 |
|
---|
96 | while (length+charlength <= MAXSTEMLEN && charlength > 0 &&
|
---|
97 | (is_unicode_letter(c) || (is_unicode_digit(c) &&
|
---|
98 | ++numeric <= MAXNUMERIC))) {
|
---|
99 | while (charlength-- > 0) {
|
---|
100 | mgWord[++length] = *textHere++;
|
---|
101 | }
|
---|
102 | charlength = parse_utf8_char (textHere, textEnd, &c);
|
---|
103 | }
|
---|
104 |
|
---|
105 | mgWord[0] = length;
|
---|
106 |
|
---|
107 | return textHere;
|
---|
108 | }
|
---|
109 |
|
---|
110 | const unsigned char *ParseNonindexWord (const unsigned char *textHere,
|
---|
111 | const unsigned char *textEnd) {
|
---|
112 | register int charlength = 0;
|
---|
113 | unsigned short c;
|
---|
114 |
|
---|
115 | charlength = parse_utf8_char(textHere, textEnd, &c);
|
---|
116 |
|
---|
117 | while (charlength > 0 && !is_unicode_letdig(c)) {
|
---|
118 | textHere += charlength;
|
---|
119 | charlength = parse_utf8_char (textHere, textEnd, &c);
|
---|
120 | }
|
---|
121 |
|
---|
122 | return textHere;
|
---|
123 | }
|
---|