1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/// _
/// __ ___ _ _ __ | |_ __ ___ __
/// \ \/ / | | | '_ \| __/ _` \ \/ /
/// > <| |_| | | | | || (_| |> <
/// /_/\_\\__, |_| |_|\__\__,_/_/\_\
/// |___/
///
/// Copyright (c) 1997 - Ognjen 'xolatile' Milan Robovic
///
/// xolatile@chud.cyou - xyntax - Tiny, unsafe and somewhat insane unity header for generic syntax definition.
///
/// This program is free software, free as in freedom and as in free beer, you can redistribute it and/or modify it under the terms of the GNU
/// General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version if you wish...
///
/// This program is distributed in the hope that it will be useful, but it is probably not, and without any warranty, without even the implied
/// warranty of merchantability or fitness for a particular purpose, because it is pointless. Please see the GNU (Geenoo) General Public License
/// for more details, if you dare, it is a lot of text that nobody wants to read...
typedef struct {
natural count;
natural limit;
boolean * enrange;
boolean * derange;
character * * begin;
character * * end;
character * escape;
natural * colour;
natural * effect;
} syntax_structure;
static syntax_structure * syntax_initialize (natural limit) {
syntax_structure * syntax = allocate (sizeof (* syntax));
syntax->limit = limit;
if (limit != 0) {
syntax->enrange = allocate (syntax->limit * sizeof (* syntax->enrange));
syntax->derange = allocate (syntax->limit * sizeof (* syntax->derange));
syntax->begin = allocate (syntax->limit * sizeof (* syntax->begin));
syntax->end = allocate (syntax->limit * sizeof (* syntax->end));
syntax->escape = allocate (syntax->limit * sizeof (* syntax->escape));
syntax->colour = allocate (syntax->limit * sizeof (* syntax->colour));
syntax->effect = allocate (syntax->limit * sizeof (* syntax->effect));
}
return (syntax);
}
static syntax_structure * syntax_deinitialize (syntax_structure * syntax) {
for (natural index = 0; index < syntax->count; ++index) {
syntax->begin [index] = deallocate (syntax->begin [index]);
syntax->end [index] = deallocate (syntax->end [index]);
}
syntax->enrange = deallocate (syntax->enrange);
syntax->derange = deallocate (syntax->derange);
syntax->begin = deallocate (syntax->begin);
syntax->end = deallocate (syntax->end);
syntax->escape = deallocate (syntax->escape);
syntax->colour = deallocate (syntax->colour);
syntax->effect = deallocate (syntax->effect);
return (deallocate (syntax));
}
static natural syntax_define (syntax_structure * syntax, boolean enrange, boolean derange, character * begin, character * end, character escape,
natural colour, natural effect) {
++syntax->count;
natural current = syntax->count - 1;
fatal_failure (begin == null, "syntax_define: Begin string is null pointer.");
fatal_failure (end == null, "syntax_define: End string is null pointer.");
fatal_failure (syntax->count >= syntax->limit, "syntax_define: Reached the hardcoded limit.");
if (syntax->limit == 0) {
syntax->enrange = reallocate (syntax->enrange, syntax->count * sizeof (* syntax->enrange));
syntax->derange = reallocate (syntax->derange, syntax->count * sizeof (* syntax->derange));
syntax->begin = reallocate (syntax->begin, syntax->count * sizeof (* syntax->begin));
syntax->end = reallocate (syntax->end, syntax->count * sizeof (* syntax->end));
syntax->escape = reallocate (syntax->escape, syntax->count * sizeof (* syntax->escape));
syntax->colour = reallocate (syntax->colour, syntax->count * sizeof (* syntax->colour));
syntax->effect = reallocate (syntax->effect, syntax->count * sizeof (* syntax->effect));
}
syntax->begin [current] = allocate ((string_length (begin) + 1) * sizeof (* * syntax->begin));
syntax->end [current] = allocate ((string_length (end) + 1) * sizeof (* * syntax->end));
syntax->enrange [current] = enrange;
syntax->derange [current] = derange;
syntax->escape [current] = escape;
syntax->colour [current] = colour;
syntax->effect [current] = effect;
string_copy (syntax->begin [current], begin);
string_copy (syntax->end [current], end);
return (current);
}
static natural syntax_select (syntax_structure * syntax, character * string, natural * length) {
natural offset = 0;
natural subset = 0;
natural select = 0;
natural_64 begin_length = 0;
natural_64 end_length = 0;
for (; select != syntax->count; ++select) {
begin_length = string_length (syntax->begin [select]);
if (! syntax->enrange [select]) {
if (! syntax->derange [select]) {
if (string_compare_limit (string, syntax->begin [select], begin_length)) {
break;
}
} else {
if ((string_compare_limit (string, syntax->begin [select], begin_length))
&& (character_compare_array (string [offset + begin_length], syntax->end [select]))) {
break;
}
}
} else {
for (subset = 0; subset != begin_length; ++subset) {
if (string [offset] == syntax->begin [select] [subset]) {
goto selected;
}
}
}
}
selected:
if (select >= syntax->count) {
* length = 1;
return (syntax->count);
}
end_length = string_length (syntax->end [select]);
for (offset = 1; string [offset - 1] != character_null; ++offset) {
if (string [offset] == syntax->escape [select]) {
++offset;
continue;
}
if (syntax->derange [select]) {
subset = 0;
if (end_length == 0) {
break;
} do {
if (string [offset] == syntax->end [select] [subset]) {
* length = offset;
goto finished;
}
} while (++subset != end_length);
} else {
if (end_length != 0) {
if (string_compare_limit (& string [offset], syntax->end [select], end_length)) {
* length = offset + end_length;
return (select);
}
} else {
* length = 1;
return (select);
}
}
}
finished:
return (select);
}
|
