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/* |
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* SubParsing.c |
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* SSARender2 |
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* |
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* Created by Alexander Strange on 7/25/07. |
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* Copyright 2007 __MyCompanyName__. All rights reserved. |
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* |
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*/ |
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|
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#import "SubParsing.h" |
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#import "SubUtilities.h" |
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#import "SubContext.h" |
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#import "Codecprintf.h" |
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|
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%%machine SSAfile; |
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%%write data; |
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|
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@implementation SubRenderSpan |
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+(SubRenderSpan*)startingSpanForDiv:(SubRenderDiv*)div delegate:(SubRenderer*)delegate |
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{ |
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SubRenderSpan *span = [[SubRenderSpan alloc] init]; |
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span->offset = 0; |
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span->ex = [delegate spanExtraFromRenderDiv:div]; |
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span->delegate = delegate; |
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return [span autorelease]; |
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} |
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|
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-(SubRenderSpan*)cloneWithDelegate:(SubRenderer*)delegate_ |
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{ |
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SubRenderSpan *span = [[SubRenderSpan alloc] init]; |
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span->offset = offset; |
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span->ex = [delegate_ cloneSpanExtra:self]; |
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span->delegate = delegate_; |
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return [span autorelease]; |
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} |
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|
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-(void)dealloc |
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{ |
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[delegate releaseSpanExtra:ex]; |
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[super dealloc]; |
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} |
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|
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-(void)finalize {[delegate releaseSpanExtra:ex]; [super finalize];} |
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@end |
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|
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@implementation SubRenderDiv |
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-(NSString*)description |
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{ |
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int i, sc = [spans count]; |
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NSMutableString *tmp = [NSMutableString stringWithFormat:@"div \"%@\" with %d spans:", text, sc]; |
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for (i = 0; i < sc; i++) {[tmp appendFormat:@" %d",((SubRenderSpan*)[spans objectAtIndex:i])->offset];} |
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[tmp appendFormat:@" %d", [text length]]; |
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return tmp; |
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} |
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|
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-(SubRenderDiv*)init |
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{ |
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if (self = [super init]) { |
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text = nil; |
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styleLine = nil; |
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marginL = marginR = marginV = layer = 0; |
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spans = nil; |
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|
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posX = posY = 0; |
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alignH = kSubAlignmentMiddle; alignV = kSubAlignmentBottom; |
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|
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is_shape = positioned = NO; |
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render_complexity = 0; |
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} |
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|
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return self; |
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} |
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|
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-(SubRenderDiv*)nextDivWithDelegate:(SubRenderer*)delegate |
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{ |
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SubRenderDiv *div = [[[SubRenderDiv alloc] init] autorelease]; |
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|
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div->text = [[NSMutableString string] retain]; |
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div->styleLine = [styleLine retain]; |
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div->marginL = marginL; |
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div->marginR = marginR; |
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div->marginV = marginV; |
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div->layer = layer; |
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|
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div->spans = [[NSMutableArray arrayWithObject:[[spans objectAtIndex:[spans count]-1] cloneWithDelegate:delegate]] retain]; |
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|
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div->posX = posX; |
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div->posY = posY; |
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div->alignH = alignH; |
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div->alignV = alignV; |
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div->wrapStyle = wrapStyle; |
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|
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div->is_shape = NO; |
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div->positioned = positioned; |
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div->render_complexity = render_complexity; |
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|
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return div; |
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} |
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|
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-(void)dealloc |
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{ |
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[text release]; |
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[styleLine release]; |
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[spans release]; |
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[super dealloc]; |
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} |
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@end |
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|
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extern BOOL IsScriptASS(NSDictionary *headers); |
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|
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static NSArray *SplitByFormat(NSString *format, NSArray *lines) |
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{ |
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NSArray *formarray = STSplitStringIgnoringWhitespace(format,@","); |
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int i, numlines = [lines count], numfields = [formarray count]; |
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NSMutableArray *ar = [NSMutableArray arrayWithCapacity:numlines]; |
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|
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for (i = 0; i < numlines; i++) { |
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NSString *s = [lines objectAtIndex:i]; |
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NSArray *splitline = STSplitStringWithCount(s, @",", numfields); |
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|
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if ([splitline count] != numfields) continue; |
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[ar addObject:[NSDictionary dictionaryWithObjects:splitline |
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forKeys:formarray]]; |
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} |
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return ar; |
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} |
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|
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void SubParseSSAFile(const unichar *ssa, size_t len, NSDictionary **headers, NSArray **styles, NSArray **subs) |
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{ |
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const unichar *p = ssa, *pe = ssa + len, *strbegin = p; |
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int cs=0; |
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|
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NSMutableDictionary *hd = [NSMutableDictionary dictionary]; |
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NSMutableArray *stylearr = [NSMutableArray array], *eventarr = [NSMutableArray array], *cur_array=NULL; |
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NSCharacterSet *wcs = [NSCharacterSet whitespaceCharacterSet]; |
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NSString *str=NULL, *styleformat=NULL, *eventformat=NULL; |
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|
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#define send() [NSString stringWithCharacters:strbegin length:p-strbegin] |
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|
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%%{ |
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alphtype unsigned short; |
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|
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action sstart {strbegin = p;} |
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action setheaderval {[hd setObject:send() forKey:str];} |
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action savestr {str = send();} |
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action csvlineend {[cur_array addObject:[send() stringByTrimmingCharactersInSet:wcs]];} |
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action setupevents { |
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cur_array=eventarr; |
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eventformat = IsScriptASS(hd) ? |
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@"Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text": |
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@"Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text"; |
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} |
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|
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nl = ("\n" | "\r" | "\r\n"); |
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str = any*; |
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ws = space | 0xa0; |
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bom = 0xfeff; |
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|
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hline = ((";" str) | (([^;] str) >sstart %savestr :> (":" ws* str >sstart %setheaderval)?))? :> nl; |
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header = "[Script Info]" nl hline*; |
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format = "Format:" ws* %sstart str %savestr :> nl; |
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action assformat {styleformat = @"Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding";} |
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action ssaformat {styleformat = @"Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding";} |
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stylename = ("[" [Vv] "4 Styles]") %ssaformat | ("[" [Vv] "4+ Styles]") %assformat; |
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sline = (("Style:" ws* %sstart str %csvlineend) | str) :> nl; |
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styles = stylename % {cur_array=stylearr;} nl :> (format %{styleformat=str;})? <: (sline*); |
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event_txt = (("Dialogue:" ws* %sstart str %csvlineend) | str); |
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event = event_txt :> nl; |
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lines = "[Events]" %setupevents nl :> (format %{eventformat=str;})? <: (event*); |
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main := bom? header styles lines?; |
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}%% |
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%%write init; |
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%%write exec; |
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%%write eof; |
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*headers = hd; |
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if (styles) *styles = SplitByFormat(styleformat, stylearr); |
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if (subs) *subs = SplitByFormat(eventformat, eventarr); |
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} |
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|
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%%machine SSAtag; |
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%%write data; |
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static NSMutableString *FilterSlashEscapes(NSMutableString *s) |
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{ |
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[s replaceOccurrencesOfString:@"\\n" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [s length])]; |
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unichar nbsp = 0xA0; |
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[s replaceOccurrencesOfString:@"\\h" withString:[NSString stringWithCharacters:  length:1] options:0 range: NSMakeRange(0,[s length])]; |
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return s; |
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} |
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static int compare_layer(const void *a, const void *b) |
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{ |
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const SubRenderDiv *divA = a, *divB = b; |
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if (divA->layer < divB->layer) return -1; |
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else if (divA->layer > divB->layer) return 1; |
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return 0; |
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} |
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|
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NSArray *SubParsePacket(NSString *packet, SubContext *context, SubRenderer *delegate, unichar *linebuf) |
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{ |
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packet = STStandardizeStringNewlines(packet); |
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NSArray *lines = (context->scriptType == kSubTypeSRT) ? [NSArray arrayWithObject:[packet substringToIndex:[packet length]-1]] : [packet componentsSeparatedByString:@"\n"]; |
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size_t line_count = [lines count]; |
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NSMutableArray *divs = [NSMutableArray arrayWithCapacity:line_count]; |
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int i; |
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|
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for (i = 0; i < line_count; i++) { |
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NSString *inputText = [lines objectAtIndex:(context->collisions == kSubCollisionsReverse) ? (line_count - i - 1) : i]; |
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SubRenderDiv *div = [[[SubRenderDiv alloc] init] autorelease]; |
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|
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div->text = [[NSMutableString string] retain]; |
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div->spans = [[NSMutableArray array] retain]; |
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|
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if (context->scriptType == kSubTypeSRT) { |
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div->styleLine = [context->defaultStyle retain]; |
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div->marginL = div->styleLine->marginL; |
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div->marginR = div->styleLine->marginR; |
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div->marginV = div->styleLine->marginV; |
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div->layer = 0; |
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div->wrapStyle = kSubLineWrapTopWider; |
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} else { |
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NSArray *fields = STSplitStringWithCount(inputText, @",", 9); |
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if ([fields count] < 9) continue; |
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div->layer = [[fields objectAtIndex:1] intValue]; |
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div->styleLine = [[context styleForName:[fields objectAtIndex:2]] retain]; |
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div->marginL = [[fields objectAtIndex:4] intValue]; |
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div->marginR = [[fields objectAtIndex:5] intValue]; |
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div->marginV = [[fields objectAtIndex:6] intValue]; |
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inputText = [fields objectAtIndex:8]; |
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if ([inputText length] == 0) continue; |
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|
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if (div->marginL == 0) div->marginL = div->styleLine->marginL; |
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if (div->marginR == 0) div->marginR = div->styleLine->marginR; |
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if (div->marginV == 0) div->marginV = div->styleLine->marginV; |
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|
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div->wrapStyle = context->wrapStyle; |
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} |
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|
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div->alignH = div->styleLine->alignH; |
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div->alignV = div->styleLine->alignV; |
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|
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size_t linelen = [inputText length]; |
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[inputText getCharacters:linebuf]; |
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linebuf[linelen] = 0; |
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|
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#undef send |
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#define send() [NSString stringWithCharacters:outputbegin length:p-outputbegin] |
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#define psend() [NSString stringWithCharacters:parambegin length:p-parambegin] |
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#define tag(tagt, p) [delegate spanChangedTag:tag_##tagt span:current_span div:div param:&(p)] |
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|
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{ |
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unichar *p = linebuf, *pe = linebuf + linelen, *outputbegin = p, *parambegin=p, *last_cmd_start=p; |
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const unichar *pb = p; |
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int cs = 0; |
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SubRenderSpan *current_span = [SubRenderSpan startingSpanForDiv:div delegate:delegate]; |
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unsigned chars_deleted = 0; int intnum = 0; float floatnum = 0; |
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NSString *strval=NULL; |
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unsigned curX, curY; |
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BOOL reached_end = NO, startNewLayout = NO; |
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|
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%%{ |
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action bold {tag(b, intnum);} |
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action italic {tag(i, intnum);} |
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action underline {tag(u, intnum);} |
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action strikeout {tag(s, intnum);} |
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action outlinesize {tag(bord, floatnum);} |
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action shadowdist {tag(shad, floatnum);} |
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action bluredge {tag(be, intnum);} |
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action fontname {tag(fn, strval);} |
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action fontsize {tag(fs, floatnum);} |
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action scalex {tag(fscx, floatnum);} |
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action scaley {tag(fscy, floatnum);} |
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action tracking {tag(fsp, floatnum);} |
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action frz {tag(frz, floatnum);} |
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action frx {tag(frx, floatnum);} |
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action fry {tag(fry, floatnum);} |
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action primaryc {tag(1c, intnum);} |
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action secondaryc {tag(2c, intnum);} |
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action outlinec {tag(3c, intnum);} |
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action shadowc {tag(4c, intnum);} |
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| 295 |
action alpha {tag(alpha, intnum);} |
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action primarya {tag(1a, intnum);} |
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action secondarya {tag(2a, intnum);} |
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action outlinea {tag(3a, intnum);} |
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action shadowa {tag(4a, intnum);} |
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action stylerevert {tag(r, strval);} |
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|
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action paramset {parambegin=p;} |
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action setintnum {intnum = [psend() intValue];} |
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action sethexnum {intnum = strtoul([psend() UTF8String], NULL, 16);} |
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action setfloatnum {floatnum = [psend() floatValue];} |
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action setstringval {strval = psend();} |
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action setxypos {curX=curY=-1; sscanf([psend() UTF8String], "(%d,%d)", &curX, &curY);} |
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| 308 |
|
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action ssaalign { |
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if (outputbegin == pb) ParseASSAlignment(SSA2ASSAlignment(intnum), &div->alignH, &div->alignV); |
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} |
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|
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action align { |
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if (outputbegin == pb) ParseASSAlignment(intnum, &div->alignH, &div->alignV); |
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} |
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| 316 |
|
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action wrapstyle { |
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| 318 |
if (!startNewLayout) { |
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startNewLayout = YES; |
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| 320 |
|
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| 321 |
if ([div->text length] > 0) {[divs addObject:div]; div = [div nextDivWithDelegate:delegate];} |
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| 322 |
} |
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| 323 |
|
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div->wrapStyle = intnum; |
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| 325 |
} |
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| 326 |
|
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| 327 |
action position { |
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| 328 |
if (!startNewLayout) { |
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| 329 |
startNewLayout = YES; |
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| 330 |
|
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| 331 |
if ([div->text length] > 0) {[divs addObject:div]; div = [div nextDivWithDelegate:delegate];} |
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| 332 |
} |
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| 333 |
|
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| 334 |
div->posX = curX; |
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| 335 |
div->posY = curY; |
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| 336 |
div->positioned = YES; |
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| 337 |
} |
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| 338 |
|
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| 339 |
intnum = ("-"? [0-9]+) >paramset %setintnum; |
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| 340 |
flag = [01] >paramset %setintnum; |
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| 341 |
floatnum = ([0-9]+ ("." [0-9]*)?) >paramset %setfloatnum; |
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| 342 |
string = ([^\\}]*) >paramset %setstringval; |
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| 343 |
color = ("H"|"&"){,2} (xdigit+) >paramset %sethexnum "&"?; |
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| 344 |
parens = "(" [^)]* ")"; |
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| 345 |
xypos = ("(" "-"? [0-9]+ "," "-"? [0-9]+ ")") >paramset %setxypos; |
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| 346 |
|
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| 347 |
cmd = "\\" ( |
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| 348 |
"b" intnum %bold |
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| 349 |
|"i" flag %italic |
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| 350 |
|"u" flag %underline |
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| 351 |
|"s" flag %strikeout |
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| 352 |
|"bord" floatnum %outlinesize |
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| 353 |
|"shad" floatnum %shadowdist |
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| 354 |
|"be" flag %bluredge |
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| 355 |
|"fn" string %fontname |
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| 356 |
|"fs" floatnum %fontsize |
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| 357 |
|"fscx" floatnum %scalex |
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| 358 |
|"fscy" floatnum %scaley |
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| 359 |
|"fsp" floatnum %tracking |
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| 360 |
|("fr" "z"? floatnum %frz) |
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| 361 |
|"frx" floatnum %frx |
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| 362 |
|"fry" floatnum %fry |
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| 363 |
|"fe" intnum |
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| 364 |
|("1"? "c" color %primaryc) |
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| 365 |
|"2c" color %secondaryc |
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| 366 |
|"3c" color %outlinec |
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| 367 |
|"4c" color %shadowc |
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| 368 |
|"alpha" color %alpha |
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| 369 |
|"1a" color %primarya |
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| 370 |
|"2a" color %secondarya |
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| 371 |
|"3a" color %outlinea |
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| 372 |
|"4a" color %shadowa |
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| 373 |
|"a" intnum %ssaalign |
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| 374 |
|"an" intnum %align |
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| 375 |
|([kK] [fo]? intnum) |
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| 376 |
|"q" intnum %wrapstyle |
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| 377 |
|"r" string %stylerevert |
|---|
| 378 |
|"pos" xypos %position |
|---|
| 379 |
|"t" parens |
|---|
| 380 |
|"org" parens |
|---|
| 381 |
|("fad" "e"? parens) |
|---|
| 382 |
|"clip" parens |
|---|
| 383 |
|"p" floatnum |
|---|
| 384 |
|"pbo" floatnum |
|---|
| 385 |
); |
|---|
| 386 |
|
|---|
| 387 |
cmd_list = "{" (cmd* | any*) :> "}"; |
|---|
| 388 |
|
|---|
| 389 |
action backslash_handler { |
|---|
| 390 |
[div->text appendString:send()]; |
|---|
| 391 |
unichar c = *(p+1), o=c; |
|---|
| 392 |
|
|---|
| 393 |
if (c) { |
|---|
| 394 |
switch (c) { |
|---|
| 395 |
case 'N': case 'n': |
|---|
| 396 |
o = '\n'; |
|---|
| 397 |
break; |
|---|
| 398 |
case 'h': |
|---|
| 399 |
o = 0xA0; //non-breaking space |
|---|
| 400 |
break; |
|---|
| 401 |
default: |
|---|
| 402 |
o = c; |
|---|
| 403 |
} |
|---|
| 404 |
} |
|---|
| 405 |
|
|---|
| 406 |
[div->text appendFormat:@"%C",o]; |
|---|
| 407 |
|
|---|
| 408 |
chars_deleted++; |
|---|
| 409 |
|
|---|
| 410 |
outputbegin = p+2; |
|---|
| 411 |
} |
|---|
| 412 |
|
|---|
| 413 |
action enter_tag { |
|---|
| 414 |
if (p > outputbegin) [div->text appendString:send()]; |
|---|
| 415 |
|
|---|
| 416 |
if (p != pb) { |
|---|
| 417 |
[div->spans addObject:current_span]; |
|---|
| 418 |
current_span = [current_span cloneWithDelegate:delegate]; |
|---|
| 419 |
} |
|---|
| 420 |
|
|---|
| 421 |
last_cmd_start = p; |
|---|
| 422 |
if (p == pe) reached_end = YES; |
|---|
| 423 |
} |
|---|
| 424 |
|
|---|
| 425 |
action exit_tag { |
|---|
| 426 |
p++; |
|---|
| 427 |
chars_deleted += (p - last_cmd_start); |
|---|
| 428 |
|
|---|
| 429 |
current_span->offset = (p - pb) - chars_deleted; |
|---|
| 430 |
outputbegin = p; |
|---|
| 431 |
|
|---|
| 432 |
if (startNewLayout) { |
|---|
| 433 |
startNewLayout = NO; |
|---|
| 434 |
chars_deleted = outputbegin - pb; |
|---|
| 435 |
} |
|---|
| 436 |
|
|---|
| 437 |
p--; |
|---|
| 438 |
} |
|---|
| 439 |
|
|---|
| 440 |
special = ("\\" any) >backslash_handler | cmd_list >enter_tag @exit_tag; |
|---|
| 441 |
sub_text_char = [^\\{]; |
|---|
| 442 |
sub_text = sub_text_char*; |
|---|
| 443 |
|
|---|
| 444 |
main := ((sub_text | special)* "\\"?) %/enter_tag; |
|---|
| 445 |
}%% |
|---|
| 446 |
|
|---|
| 447 |
%%write init; |
|---|
| 448 |
%%write exec; |
|---|
| 449 |
%%write eof; |
|---|
| 450 |
|
|---|
| 451 |
if (!reached_end) Codecprintf(NULL, "parse error: %s\n", [inputText UTF8String]); |
|---|
| 452 |
if (linebuf[linelen-1] == '\\') [div->text appendString:@"\\"]; |
|---|
| 453 |
[divs addObject:div]; |
|---|
| 454 |
} |
|---|
| 455 |
|
|---|
| 456 |
} |
|---|
| 457 |
|
|---|
| 458 |
STSortMutableArrayStably(divs, compare_layer); |
|---|
| 459 |
return divs; |
|---|
| 460 |
} |
|---|
