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
188
189
190
191
192
193
194
195
196
|
#define SESSION_FILENAME "session.txt"
#define SESSION_VERSION "\x7fTED0001"
static void session_write_node(Ted *ted, FILE *fp, u16 node_idx) {
Node *node = &ted->nodes[node_idx];
write_u16(fp, node_idx);
bool is_split = !node->tabs;
write_bool(fp, is_split);
if (is_split) {
write_float(fp, node->split_pos);
write_bool(fp, node->split_vertical);
write_u16(fp, node->split_a);
write_u16(fp, node->split_b);
} else {
write_u16(fp, node->active_tab); // active tab
write_u16(fp, (u16)arr_len(node->tabs)); // ntabs
arr_foreach_ptr(node->tabs, u16, tab) {
write_u16(fp, *tab);
}
}
}
static void session_read_node(Ted *ted, FILE *fp) {
u16 node_idx = read_u16(fp);
if (node_idx >= TED_MAX_NODES) {
debug_println("WARNING: Invalid node index (see %s:%d)!\n", __FILE__, __LINE__);
return;
}
ted->nodes_used[node_idx] = true;
Node *node = &ted->nodes[node_idx];
bool is_split = read_bool(fp);
if (is_split) {
node->split_pos = clampf(read_float(fp), 0, 1);
node->split_vertical = read_bool(fp);
node->split_a = clamp_u16(read_u16(fp), 0, TED_MAX_NODES);
node->split_b = clamp_u16(read_u16(fp), 0, TED_MAX_NODES);
} else {
node->active_tab = read_u16(fp);
u16 ntabs = clamp_u16(read_u16(fp), 0, TED_MAX_TABS);
if (node->active_tab >= ntabs)
node->active_tab = 0;
for (u16 i = 0; i < ntabs; ++i) {
u16 buf_idx = read_u16(fp);
if (buf_idx >= TED_MAX_BUFFERS) continue;
arr_add(node->tabs, buf_idx);
}
}
}
static void session_write_buffer(Ted *ted, FILE *fp, u16 buffer_idx) {
write_u16(fp, buffer_idx);
TextBuffer *buffer = &ted->buffers[buffer_idx];
// some info about the buffer that should be restored
if (buffer->filename && !buffer_is_untitled(buffer))
write_cstr(fp, buffer->filename);
else
write_char(fp, 0);
write_double(fp, buffer->scroll_x);
write_double(fp, buffer->scroll_y);
write_bool(fp, buffer->view_only);
buffer_pos_write(buffer->cursor_pos, fp);
write_bool(fp, buffer->selection);
if (buffer->selection)
buffer_pos_write(buffer->selection_pos, fp);
}
static void session_read_buffer(Ted *ted, FILE *fp) {
u16 buffer_idx = read_u16(fp);
if (buffer_idx >= TED_MAX_BUFFERS) {
debug_println("WARNING: Invalid buffer index (see %s:%d)!\n", __FILE__, __LINE__);
return;
}
TextBuffer *buffer = &ted->buffers[buffer_idx];
ted->buffers_used[buffer_idx] = true;
char filename[TED_PATH_MAX] = {0};
read_cstr(fp, filename, sizeof filename);
buffer_create(buffer, ted);
if (!buffer_haserr(buffer)) {
if (*filename) {
if (!buffer_load_file(buffer, filename))
buffer_new_file(buffer, TED_UNTITLED);
} else {
buffer_new_file(buffer, TED_UNTITLED);
}
buffer->scroll_x = read_double(fp);
buffer->scroll_y = read_double(fp);
buffer->view_only = read_bool(fp);
buffer->cursor_pos = buffer_pos_read(buffer, fp);
buffer->selection = read_bool(fp);
if (buffer->selection)
buffer->selection_pos = buffer_pos_read(buffer, fp);
}
}
static void session_write_file(Ted *ted, FILE *fp) {
fwrite(SESSION_VERSION, 1, sizeof SESSION_VERSION, fp);
write_u16(fp, ted->active_node ? (u16)(ted->active_node - ted->nodes) : U16_MAX); // active node idx
write_u16(fp, ted->active_buffer ? (u16)(ted->active_buffer - ted->buffers) : U16_MAX); // active buffer idx
u16 nnodes = 0;
for (u16 i = 0; i < TED_MAX_NODES; ++i)
nnodes += ted->nodes_used[i];
write_u16(fp, nnodes);
for (u16 i = 0; i < TED_MAX_NODES; ++i)
if (ted->nodes_used[i])
session_write_node(ted, fp, i);
u16 nbuffers = 0;
for (u16 i = 0; i < TED_MAX_BUFFERS; ++i)
nbuffers += ted->buffers_used[i];
write_u16(fp, nbuffers);
for (u16 i = 0; i < TED_MAX_BUFFERS; ++i)
if (ted->buffers_used[i])
session_write_buffer(ted, fp, i);
}
static void session_read_file(Ted *ted, FILE *fp) {
char version[sizeof SESSION_VERSION] = {0};
fread(version, 1, sizeof version, fp);
if (memcmp(version, SESSION_VERSION, sizeof version) != 0) {
debug_println("WARNING: Session file has wrong version (see %s:%d)!\n", __FILE__, __LINE__);
return; // wrong version
}
u16 active_node_idx = read_u16(fp);
u16 active_buffer_idx = read_u16(fp);
u16 nnodes = clamp_u16(read_u16(fp), 0, TED_MAX_NODES);
for (u16 i = 0; i < nnodes; ++i) {
session_read_node(ted, fp);
}
u16 nbuffers = clamp_u16(read_u16(fp), 0, TED_MAX_BUFFERS);
for (u16 i = 0; i < nbuffers; ++i) {
session_read_buffer(ted, fp);
}
if (active_node_idx == U16_MAX) {
ted->active_node = NULL;
} else {
active_node_idx = clamp_u16(active_node_idx, 0, TED_MAX_NODES);
if (ted->nodes_used[active_node_idx])
ted->active_node = &ted->nodes[active_node_idx];
}
if (active_buffer_idx == U16_MAX) {
ted->active_buffer = NULL;
} else {
active_buffer_idx = clamp_u16(active_buffer_idx, 0, TED_MAX_BUFFERS);
if (ted->buffers_used[active_buffer_idx])
ted->active_buffer = &ted->buffers[active_buffer_idx];
}
if (nbuffers && !ted->active_buffer) {
// set active buffer to something
for (u16 i = 0; i < TED_MAX_BUFFERS; ++i) {
if (ted->buffers_used[i]) {
ted_switch_to_buffer(ted, &ted->buffers[i]);
break;
}
}
}
}
static void session_write(Ted *ted) {
Settings const *settings = &ted->settings;
if (!settings->restore_session)
return;
// first we write to a prefixed file so in case something goes wrong we still have the old session.
char filename1[TED_PATH_MAX], filename2[TED_PATH_MAX];
strbuf_printf(filename1, "%s/_" SESSION_FILENAME, ted->local_data_dir);
strbuf_printf(filename2, "%s/" SESSION_FILENAME, ted->local_data_dir);
FILE *fp = fopen(filename1, "wb");
if (fp) {
session_write_file(ted, fp);
bool success = !ferror(fp);
success &= fclose(fp) == 0;
if (success)
rename(filename1, filename2); // overwrite old session
}
}
static void session_read(Ted *ted) {
Settings const *settings = &ted->settings;
if (settings->restore_session) {
char filename[TED_PATH_MAX];
strbuf_printf(filename, "%s/" SESSION_FILENAME, ted->local_data_dir);
FILE *fp = fopen(filename, "rb");
if (fp) {
session_read_file(ted, fp);
fclose(fp);
}
}
}
|
