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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
//! Per-tag-name application that updates `ProcessedTags`
use crate::pipeline::tag_processor::{
parse_alpha, parse_clip_args, parse_color, parse_fade_args, parse_move_args, parse_pos_args,
KaraokeData, KaraokeStyle, ProcessedTags, TransformData,
};
use crate::pipeline::transform::TransformAnimation;
use crate::utils::RenderError;
use super::split::{extract_tag_name_and_args, split_tags_carefully};
#[cfg(feature = "nostd")]
use alloc::string::ToString;
#[cfg(not(feature = "nostd"))]
use std::string::ToString;
/// Process tags within a tag block and update current tags
pub(super) fn process_tag_block(
content: &str,
current: &mut ProcessedTags,
) -> Result<(), RenderError> {
// Parse tags more carefully to handle nested parentheses in \t tags
let parts = split_tags_carefully(content);
for part in &parts {
if part.is_empty() {
continue;
}
let (name, args) = extract_tag_name_and_args(part);
// Process based on tag name
match name {
// Color tags
"c" | "1c" => {
if let Some(color) = parse_color(args) {
current.colors.primary = Some(color);
}
}
"2c" => {
if let Some(color) = parse_color(args) {
current.colors.secondary = Some(color);
}
}
"3c" => {
if let Some(color) = parse_color(args) {
current.colors.outline = Some(color);
}
}
"4c" => {
if let Some(color) = parse_color(args) {
current.colors.shadow = Some(color);
}
}
"alpha" => {
if let Some(alpha) = parse_alpha(args) {
current.colors.alpha = Some(alpha);
}
}
"1a" => {
if let Some(alpha) = parse_alpha(args) {
current.colors.alpha1 = Some(alpha);
}
}
"2a" => {
if let Some(alpha) = parse_alpha(args) {
current.colors.alpha2 = Some(alpha);
}
}
"3a" => {
if let Some(alpha) = parse_alpha(args) {
current.colors.alpha3 = Some(alpha);
}
}
"4a" => {
if let Some(alpha) = parse_alpha(args) {
current.colors.alpha4 = Some(alpha);
}
}
// Font tags
"fn" => {
// Empty \fn resets to style default
if args.is_empty() {
current.font.name = None;
} else {
current.font.name = Some(args.to_string());
}
}
"fs" => {
if let Ok(size) = args.parse::<f32>() {
current.font.size = Some(size);
}
}
"b" => {
current.formatting.bold = Some(args != "0");
}
"i" => {
current.formatting.italic = Some(args != "0");
}
"u" => {
current.formatting.underline = Some(args != "0");
}
"s" => {
current.formatting.strikeout = Some(args != "0");
}
// Font scale and spacing tags
"fscx" => {
if let Ok(scale) = args.parse::<f32>() {
current.font.scale_x = Some(scale);
}
}
"fscy" => {
if let Ok(scale) = args.parse::<f32>() {
current.font.scale_y = Some(scale);
}
}
"fsp" => {
if let Ok(spacing) = args.parse::<f32>() {
current.font.spacing = Some(spacing);
}
}
"blur" => {
if let Ok(radius) = args.parse::<f32>() {
current.formatting.blur = Some(radius);
}
}
"be" => {
if let Ok(radius) = args.parse::<f32>() {
current.formatting.blur_edges = Some(radius);
}
}
"clip" | "iclip" => {
if let Some(mut clip) = parse_clip_args(args) {
clip.inverse = name == "iclip";
current.clip = Some(clip);
}
}
"fax" => {
if let Ok(shear) = args.parse::<f32>() {
current.shear_x = Some(shear);
}
}
"fay" => {
if let Ok(shear) = args.parse::<f32>() {
current.shear_y = Some(shear);
}
}
"org" => {
if let Some((x, y)) = parse_pos_args(args) {
current.origin = Some((x, y));
}
}
// Rotation tags
"frz" | "fr" => {
if let Ok(angle) = args.parse::<f32>() {
current.font.rotation_z = Some(angle);
}
}
"frx" => {
if let Ok(angle) = args.parse::<f32>() {
current.font.rotation_x = Some(angle);
}
}
"fry" => {
if let Ok(angle) = args.parse::<f32>() {
current.font.rotation_y = Some(angle);
}
}
// Border / outline width
"bord" => {
if let Ok(w) = args.parse::<f32>() {
current.formatting.border = Some(w);
}
}
"xbord" => {
if let Ok(w) = args.parse::<f32>() {
current.formatting.border_x = Some(w);
}
}
"ybord" => {
if let Ok(w) = args.parse::<f32>() {
current.formatting.border_y = Some(w);
}
}
// Shadow depth
"shad" => {
if let Ok(d) = args.parse::<f32>() {
current.formatting.shadow = Some(d);
}
}
"xshad" => {
if let Ok(d) = args.parse::<f32>() {
current.formatting.shadow_x = Some(d);
}
}
"yshad" => {
if let Ok(d) = args.parse::<f32>() {
current.formatting.shadow_y = Some(d);
}
}
// Wrap style
"q" => {
if let Ok(wrap) = args.parse::<u8>() {
current.formatting.wrap_style = Some(wrap);
}
}
// \r resets all inline overrides back to the line's style.
"r" => {
*current = ProcessedTags::default();
}
// Alignment tags
"a" | "an" => {
if let Ok(align) = args.parse::<u8>() {
current.formatting.alignment = Some(align);
}
}
// Position tags - these apply to the whole event, not segments
"pos" => {
if let Some((x, y)) = parse_pos_args(args) {
current.position = Some((x, y));
}
}
"move" => {
if let Some(data) = parse_move_args(args) {
current.movement = Some(data);
}
}
// Fade effects
"fad" | "fade" => {
// Import the parse_fade_args function
if let Some(fade) = parse_fade_args(args) {
current.fade = Some(fade);
}
}
// Drawing mode
"p" => {
if let Ok(level) = args.parse::<u8>() {
current.drawing_mode = Some(level);
}
}
// Transform animation
"t" => {
// Transform tags need special handling for nested tags
if let Some(animation) = TransformAnimation::parse(args) {
current.transforms.push(TransformData { animation });
}
}
// Karaoke tags
"k" => {
if let Ok(duration) = args.parse::<u32>() {
current.karaoke = Some(KaraokeData {
duration,
style: KaraokeStyle::Basic,
start_time: None,
});
}
}
"kf" => {
if let Ok(duration) = args.parse::<u32>() {
current.karaoke = Some(KaraokeData {
duration,
style: KaraokeStyle::Fill,
start_time: None,
});
}
}
"ko" => {
if let Ok(duration) = args.parse::<u32>() {
current.karaoke = Some(KaraokeData {
duration,
style: KaraokeStyle::Outline,
start_time: None,
});
}
}
"K" => {
if let Ok(duration) = args.parse::<u32>() {
current.karaoke = Some(KaraokeData {
duration,
style: KaraokeStyle::Sweep,
start_time: None,
});
}
}
_ => {
// Other tags can be added as needed
}
}
}
Ok(())
}