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
176
177
178
179
180
181
182
183
184
185
186
187
|
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: 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
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* Additional permission under GNU GPL version 3 section 7:
*
* If you modify this Program, or any covered work, by linking or
* combining it with OpenSSL (or a modified version of that library),
* containing parts covered by the terms of the OpenSSL License and the
* original SSLeay license, the licensors of this Program grant you
* additional permission to convey the resulting work. Corresponding
* Source for a non-source form of such a combination shall include the
* source code for the parts of OpenSSL used as well as that of the
* covered work.
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include "chat.h"
struct Node {
uint id;
char *str;
enum Color color;
struct Node *prev;
struct Node *next;
};
static struct Node *alloc(uint id, const char *str, enum Color color) {
struct Node *node = malloc(sizeof(*node));
if (!node) err(EX_OSERR, "malloc");
node->id = id;
node->str = strdup(str);
node->color = color;
node->prev = NULL;
node->next = NULL;
if (!node->str) err(EX_OSERR, "strdup");
return node;
}
static struct Node *head;
static struct Node *tail;
static struct Node *detach(struct Node *node) {
if (node->prev) node->prev->next = node->next;
if (node->next) node->next->prev = node->prev;
if (head == node) head = node->next;
if (tail == node) tail = node->prev;
node->prev = NULL;
node->next = NULL;
return node;
}
static struct Node *prepend(struct Node *node) {
node->prev = NULL;
node->next = head;
if (head) head->prev = node;
head = node;
tail = (tail ?: node);
return node;
}
static struct Node *append(struct Node *node) {
node->next = NULL;
node->prev = tail;
if (tail) tail->next = node;
tail = node;
head = (head ?: node);
return node;
}
static struct Node *find(uint id, const char *str) {
for (struct Node *node = head; node; node = node->next) {
if (node->id != id) continue;
if (strcmp(node->str, str)) continue;
return node;
}
return NULL;
}
void completeAdd(uint id, const char *str, enum Color color) {
if (!find(id, str)) append(alloc(id, str, color));
}
void completeTouch(uint id, const char *str, enum Color color) {
struct Node *node = find(id, str);
if (node) node->color = color;
prepend(node ? detach(node) : alloc(id, str, color));
}
enum Color completeColor(uint id, const char *str) {
struct Node *node = find(id, str);
return (node ? node->color : Default);
}
static struct Node *match;
const char *complete(uint id, const char *prefix) {
for (match = (match ? match->next : head); match; match = match->next) {
if (match->id && match->id != id) continue;
if (strncasecmp(match->str, prefix, strlen(prefix))) continue;
return match->str;
}
return NULL;
}
const char *completeSubstr(uint id, const char *substr) {
for (match = (match ? match->next : head); match; match = match->next) {
if (match->id && match->id != id) continue;
if (!strstr(match->str, substr)) continue;
return match->str;
}
return NULL;
}
void completeAccept(void) {
if (match) prepend(detach(match));
match = NULL;
}
void completeReject(void) {
match = NULL;
}
static struct Node *iter;
uint completeID(const char *str) {
for (iter = (iter ? iter->next : head); iter; iter = iter->next) {
if (iter->id && !strcmp(iter->str, str)) return iter->id;
}
return None;
}
void completeReplace(uint id, const char *old, const char *new) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = next) {
next = node->next;
if (id && node->id != id) continue;
if (strcmp(node->str, old)) continue;
free(node->str);
node->str = strdup(new);
prepend(detach(node));
if (!node->str) err(EX_OSERR, "strdup");
}
}
void completeRemove(uint id, const char *str) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = next) {
next = node->next;
if (id && node->id != id) continue;
if (strcmp(node->str, str)) continue;
if (match == node) match = NULL;
if (iter == node) iter = NULL;
detach(node);
free(node->str);
free(node);
}
}
void completeClear(uint id) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = next) {
next = node->next;
if (node->id != id) continue;
if (match == node) match = NULL;
if (iter == node) iter = NULL;
detach(node);
free(node->str);
free(node);
}
}
|