/*
* ssa2html
* Created by Alexander Strange on 7/28/07.
*
* A primitive .ssa/.ass to HTML converter.
*
* This file is part of Perian.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#import "SubImport.h"
#import "SubParsing.h"
#import "SubRenderer.h"
@interface SubHTMLExporter : SubRenderer
{
SubContext *sc;
NSMutableString *html;
}
@property (readonly) NSMutableString *html;
@end
@interface SubHTMLSpanExtra : NSObject
{
@public;
NSMutableString *str;
}
@end
@implementation SubHTMLSpanExtra
-(SubHTMLSpanExtra*)init
{
self = [super init];
str = [[NSMutableString alloc] init];
return self;
}
-(SubHTMLSpanExtra*)copyWithZone:(NSZone*)zone
{
return [SubHTMLSpanExtra new];
}
-(void)dealloc
{
[str release];
[super dealloc];
}
@end
@implementation SubHTMLExporter
@synthesize html;
-(SubHTMLExporter*)init
{
if (self = [super init])
{
html = [[NSMutableString alloc] init];
[html appendString:@"\n"];
[html appendString:@"\n"];
[html appendString:@"\n"];
[html appendString:@"\n"];
}
return self;
}
-(void)dealloc
{
[sc release];
[html release];
[super dealloc];
}
-(void)didCompleteHeaderParsing:(SubContext*)sc_
{
sc = [sc_ retain];
[html appendFormat:@"%@\n",[sc->headers objectForKey:@"Title"]];
[html appendString:@"\n"];
[html appendString:@"\n"];
[html appendString:@"\n"];
}
NSString *htmlfilter(NSString *s)
{
NSMutableString *ms = [[s mutableCopy] autorelease];
[ms replaceOccurrencesOfString:@"\n" withString:@"
\n" options:0 range:NSMakeRange(0, [ms length])];
// [ms replaceOccurrencesOfString:[NSString stringWithFormat:@"%C",0x00A0] withString:@" " options:0 range:NSMakeRange(0, [ms length])];
return ms;
}
-(void)didCreateStartingSpan:(SubRenderSpan *)span forDiv:(SubRenderDiv *)div
{
span.extra = [[SubHTMLSpanExtra new] autorelease];
}
-(void)spanChangedTag:(SubSSATagName)tag span:(SubRenderSpan*)span div:(SubRenderDiv*)div param:(void*)p
{
SubHTMLSpanExtra *ex = span.extra;
NSMutableString *sty = ex->str;
int ip;
NSString *sp;
float fp;
#define iv() ip = *(int*)p;
#define sv() sp = *(NSString**)p;
#define fv() fp = *(float*)p;
#define cv() ip = *(int*)p; ip = EndianU32_NtoL(ip) & 0xFFFFFF;
switch (tag) {
case tag_b:
iv();
[sty appendFormat:@"font-weight: %@; ", ip? @"bold" : @"normal"];
break;
case tag_i:
iv();
[sty appendFormat:@"font-style: %@; ", ip? @"italic" : @"normal"];
break;
case tag_u:
iv();
[sty appendFormat:@"text-decoration: %@; ", ip? @"underline" : @"none"];
break;
case tag_s:
iv();
[sty appendFormat:@"text-decoration: %@; ", ip? @"line-through" : @"none"];
break;
case tag_fn:
sv();
[sty appendFormat:@"font-family: %@; ", sp];
break;
case tag_fs:
fv();
//this is wrong, see GetWinFontSizeScale()
[sty appendFormat:@"font-size: %fpt; ", fp * (72./96.)];
break;
case tag_1c:
cv();
[sty appendFormat:@"color: #%0.9X; ", ip];
break;
case tag_4c:
cv();
[sty appendFormat:@"text-shadow: #%0.9X %fpx %fpx 0; ", ip, div->styleLine->shadowDist*2., div->styleLine->shadowDist*2.];
break;
default:
NSLog(@"unimplemented tag type %d",tag);
}
}
-(void)htmlifyDivArray:(NSArray*)divs
{
for (SubRenderDiv *div in divs) {
int j, spancount = [div->spans count], spans = 1, close_div = 0;
if (div->positioned) {
[html appendFormat:@"", div->posY, div->posX];
close_div = 1;
}
[html appendFormat:@"", EscapeCSSIdentifier(div->styleLine->name)];
for (j = 0; j < spancount; j++) {
SubRenderSpan *span = [div->spans objectAtIndex:j];
SubHTMLSpanExtra *ex = span.extra;
NSMutableString *str = ex->str;
if ([str length]) {[html appendFormat:@"",str]; spans++;}
[html appendString:htmlfilter([div->text substringWithRange:NSMakeRange(span->offset, ((j == (spancount-1)) ? [div->text length] : ((SubRenderSpan*)[div->spans objectAtIndex:j+1])->offset) - span->offset)])];
}
while (spans--) [html appendString:@""];
if (close_div) [html appendString:@"
"];
[html appendString:@"\n"];
}
}
-(void)addSub:(SubLine*)sl
{
unichar *ubuf = malloc(sizeof(unichar) * [sl->line length]);
NSArray *divs = SubParsePacket(sl->line, sc, self);
free(ubuf);
NSMutableArray *top = [NSMutableArray array], *bot = [NSMutableArray array], *abs = [NSMutableArray array];
[html appendString:@"\n"];
for (SubRenderDiv *div in divs) {
if (div->positioned)
[abs addObject:div];
else if (div->alignV == kSubAlignmentTop)
[top addObject:div];
else
[bot insertObject:div atIndex:0];
}
if ([top count]) {
[html appendString:@"
\n"];
[self htmlifyDivArray:top];
[html appendString:@"
\n"];
}
if ([bot count]) {
[html appendString:@"
\n"];
[self htmlifyDivArray:bot];
[html appendString:@"
\n"];
}
[self htmlifyDivArray:abs];
[html appendString:@"
\n"];
}
-(void)endOfFile
{
[html appendString:@"\n"];
}
@end
int main(int argc, char *argv[])
{
if (argc != 2)
return 1;
NSAutoreleasePool *outer_pool = [[NSAutoreleasePool alloc] init];
SubContext *sc; SubSerializer *ss = [[SubSerializer alloc] init];
SubHTMLExporter *htm = [[SubHTMLExporter alloc] init];
//start of lameness
//it should only have to call subparsessafile here, or something
NSString *header = SubLoadSSAFromPath([NSString stringWithUTF8String:argv[1]], ss);
ss.finished = YES;
NSDictionary *headers;
NSArray *styles;
SubParseSSAFile(header, &headers, &styles, NULL);
sc = [[SubContext alloc] initWithScriptType:kSubTypeSSA headers:headers styles:styles delegate:htm];
//end(?) of lameness
[htm endOfHead];
[sc release];
while (![ss isEmpty]) {
SubLine *sl = [ss getSerializedPacket];
if ([sl->line length] == 1) continue;
[htm addSub:sl];
}
[htm endOfFile];
puts([htm.html UTF8String]);
[ss release];
[htm release];
[outer_pool release];
return 0;
}