mirror of
https://github.com/microtherion/VocalEasel.git
synced 2024-12-22 19:23:59 +00:00
436 lines
13 KiB
Plaintext
436 lines
13 KiB
Plaintext
//
|
|
// VLXMLDocument.mm
|
|
// Vocalese
|
|
//
|
|
// Created by Matthias Neeracher on 10/10/06.
|
|
// Copyright 2006 __MyCompanyName__. All rights reserved.
|
|
//
|
|
|
|
#import "VLXMLDocument.h"
|
|
|
|
@interface NSXMLNode (VLConvenience)
|
|
|
|
- (id) nodeForXPath:(NSString *)path error:(NSError **)outError;
|
|
- (NSString *)stringForXPath:(NSString *)path error:(NSError **)outError;
|
|
- (int)intForXPath:(NSString *)path error:(NSError **)outError;
|
|
|
|
@end
|
|
|
|
@implementation NSXMLNode (VLConvenience)
|
|
|
|
- (id) nodeForXPath:(NSString *)path error:(NSError **)outError
|
|
{
|
|
NSArray * nodes = [self nodesForXPath:path error:outError];
|
|
return [nodes count] ? [nodes objectAtIndex:0] : nil;
|
|
}
|
|
|
|
- (NSString *)stringForXPath:(NSString *)path error:(NSError **)outError
|
|
{
|
|
return [[self nodeForXPath:path error:outError] stringValue];
|
|
}
|
|
|
|
- (int)intForXPath:(NSString *)path error:(NSError **)outError
|
|
{
|
|
return [[[self nodeForXPath:path error:outError] stringValue] intValue];
|
|
}
|
|
|
|
@end
|
|
|
|
@implementation VLDocument (XML)
|
|
|
|
- (NSXMLDTD *)partwiseDTD
|
|
{
|
|
NSString * dtdPath = [[NSBundle mainBundle] pathForResource:@"partwise"
|
|
ofType:@"dtd"
|
|
inDirectory:@"DTD"];
|
|
NSXMLDTD * dtd = [[[NSXMLDTD alloc]
|
|
initWithContentsOfURL:[NSURL fileURLWithPath:dtdPath]
|
|
options:0 error:nil]
|
|
autorelease];
|
|
[dtd setPublicID:@"-//Recordare//DTD MusicXML 1.1 Partwise//EN"];
|
|
[dtd setSystemID:@"http://www.musicxml.org/dtds/partwise.dtd"];
|
|
[dtd setName:@"score-partwise"];
|
|
|
|
return dtd;
|
|
}
|
|
|
|
- (NSXMLElement *)scorePartWithID:(NSString *)id name:(NSString *)name
|
|
{
|
|
NSXMLElement * part = [NSXMLNode elementWithName:@"score-part"];
|
|
[part addAttribute: [NSXMLNode attributeWithName:@"id"
|
|
stringValue:id]];
|
|
[part addChild: [NSXMLNode elementWithName:@"part-name"
|
|
stringValue:name]];
|
|
|
|
return part;
|
|
}
|
|
|
|
- (NSXMLElement *)attributesWithProps:(VLProperties)props
|
|
{
|
|
NSXMLElement * attr = [NSXMLNode elementWithName:@"attributes"];
|
|
[attr addChild: [NSXMLNode elementWithName:@"divisions"
|
|
stringValue:[NSString stringWithFormat:@"%d",
|
|
props.fDivisions]]];
|
|
|
|
NSXMLElement * key = [NSXMLNode elementWithName:@"key"];
|
|
[key addChild: [NSXMLNode elementWithName:@"fifths"
|
|
stringValue:[NSString stringWithFormat:@"%d",
|
|
props.fKey]]];
|
|
[key addChild: [NSXMLNode elementWithName:@"mode"
|
|
stringValue:
|
|
props.fMode < 0 ? @"minor" : @"major"]];
|
|
|
|
NSXMLElement * time = [NSXMLNode elementWithName:@"time"];
|
|
[time addChild: [NSXMLNode elementWithName:@"beats"
|
|
stringValue:[NSString stringWithFormat:@"%d",
|
|
props.fTime.fNum]]];
|
|
[time addChild: [NSXMLNode elementWithName:@"beat-type"
|
|
stringValue:[NSString stringWithFormat:@"%d",
|
|
props.fTime.fDenom]]];
|
|
|
|
NSXMLElement * clef = [NSXMLNode elementWithName:@"clef"];
|
|
[clef addChild: [NSXMLNode elementWithName:@"sign"
|
|
stringValue:@"G"]];
|
|
[clef addChild: [NSXMLNode elementWithName:@"line"
|
|
stringValue:@"2"]];
|
|
|
|
|
|
[attr addChild: key];
|
|
[attr addChild: time];
|
|
[attr addChild: clef];
|
|
|
|
return attr;
|
|
}
|
|
|
|
const char * sSteps = "C DbD EbE F GbG AbA BbB ";
|
|
|
|
- (NSXMLElement *)noteWithPitch:(int)pitch duration:(int)units useSharps:(BOOL)useSharps
|
|
{
|
|
NSXMLElement * note = [NSXMLNode elementWithName:@"note"];
|
|
if (pitch == VLNote::kNoPitch) {
|
|
[note addChild: [NSXMLNode elementWithName:@"rest"]];
|
|
} else {
|
|
NSXMLElement * p = [NSXMLNode elementWithName:@"pitch"];
|
|
int octave = pitch/12 - 1;
|
|
pitch = 2*(pitch % 12);
|
|
char step = sSteps[pitch];
|
|
int alt = sSteps[pitch+1] == 'b';
|
|
if (alt)
|
|
if (useSharps) {
|
|
--step; // Db -> C#
|
|
alt = 1;
|
|
} else {
|
|
alt = -1;
|
|
}
|
|
[p addChild:
|
|
[NSXMLNode elementWithName:@"step"
|
|
stringValue: [NSString stringWithFormat:@"%c",
|
|
step]]];
|
|
if (alt)
|
|
[p addChild:
|
|
[NSXMLNode elementWithName:@"alter"
|
|
stringValue: [NSString stringWithFormat:@"%d",
|
|
alt]]];
|
|
[p addChild:
|
|
[NSXMLNode elementWithName:@"octave"
|
|
stringValue: [NSString stringWithFormat:@"%d",
|
|
octave]]];
|
|
[note addChild:p];
|
|
}
|
|
[note addChild: [NSXMLNode elementWithName:@"duration"
|
|
stringValue: [NSString stringWithFormat:@"%d",
|
|
units]]];
|
|
[note addChild: [NSXMLNode elementWithName:@"voice"
|
|
stringValue: @"1"]];
|
|
|
|
return note;
|
|
}
|
|
|
|
- (void)addNotes:(VLNoteList *)notes toMeasure:(NSXMLElement *)meas
|
|
{
|
|
VLFraction resolution(1, song->fProperties.front().fDivisions*4);
|
|
bool useSharps = song->fProperties.front().fKey > 0;
|
|
for (VLNoteList::const_iterator note = notes->begin();
|
|
note != notes->end();
|
|
++note
|
|
) {
|
|
VLFraction u = note->fDuration / resolution;
|
|
int units = (u.fNum+u.fDenom/2)/u.fDenom;
|
|
[meas addChild:[self noteWithPitch:note->fPitch duration:units useSharps:useSharps]];
|
|
}
|
|
}
|
|
|
|
- (void)addChords:(VLChordList *)chords toMeasure:(NSXMLElement *)meas
|
|
{
|
|
VLFraction resolution(1, song->fProperties.front().fDivisions*4);
|
|
bool useSharps = song->fProperties.front().fKey > 0;
|
|
for (VLChordList::const_iterator chord = chords->begin();
|
|
chord != chords->end();
|
|
++chord
|
|
) {
|
|
VLFraction u = chord->fDuration / resolution;
|
|
int units = (u.fNum+u.fDenom/2)/u.fDenom;
|
|
NSXMLElement* ch = nil;
|
|
if (chord->fPitch == VLNote::kNoPitch) {
|
|
[meas addChild:[self noteWithPitch:chord->fPitch duration:units useSharps:useSharps]];
|
|
continue;
|
|
}
|
|
if (chord->fRootPitch != VLNote::kNoPitch) {
|
|
[meas addChild:[self noteWithPitch:chord->fRootPitch
|
|
duration:units useSharps:useSharps]];
|
|
ch = [NSXMLNode elementWithName:@"chord"];
|
|
}
|
|
for (int step=0; step<32; ++step)
|
|
if ((1 << step) > chord->fSteps) {
|
|
break;
|
|
} else if (chord->fSteps & (1 << step)) {
|
|
NSXMLElement * note =
|
|
[self noteWithPitch:chord->fPitch+step
|
|
duration:units useSharps:useSharps];
|
|
[note insertChild:ch atIndex:0];
|
|
[meas addChild: note];
|
|
ch = [NSXMLNode elementWithName:@"chord"];
|
|
}
|
|
}
|
|
}
|
|
|
|
- (NSXMLElement *) identificationElement
|
|
{
|
|
NSXMLElement * identification = [NSXMLNode elementWithName:@"identification"];
|
|
NSXMLElement * composer = [NSXMLNode elementWithName:@"creator"
|
|
stringValue:songComposer];
|
|
[composer addAttribute: [NSXMLNode attributeWithName:@"type"
|
|
stringValue:@"composer"]];
|
|
[identification addChild:composer];
|
|
NSXMLElement * poet = [NSXMLNode elementWithName:@"creator"
|
|
stringValue:songLyricist];
|
|
[poet addAttribute: [NSXMLNode attributeWithName:@"type"
|
|
stringValue:@"poet"]];
|
|
[identification addChild:poet];
|
|
|
|
NSXMLElement * encoding = [NSXMLNode elementWithName:@"encoding"];
|
|
[encoding addChild:
|
|
[NSXMLNode elementWithName:@"encoding-date"
|
|
stringValue:
|
|
[[NSDate date]
|
|
descriptionWithCalendarFormat:@"%Y-%m-%d"
|
|
timeZone:nil locale:nil]]];
|
|
[encoding addChild:
|
|
[NSXMLNode elementWithName:@"software"
|
|
stringValue: [NSString stringWithFormat:@"VocalEasel %@",
|
|
[[NSBundle mainBundle]
|
|
objectForInfoDictionaryKey:@"CFBundleVersion"]]]];
|
|
[identification addChild:encoding];
|
|
|
|
return identification;
|
|
}
|
|
|
|
- (NSData *)XMLDataWithError:(NSError **)outError
|
|
{
|
|
NSXMLElement * work = [NSXMLNode elementWithName:@"work"];
|
|
[work addChild: [NSXMLNode elementWithName:@"work-title"
|
|
stringValue:songTitle]];
|
|
|
|
NSXMLElement * identification = [self identificationElement];
|
|
|
|
NSXMLElement * partList = [NSXMLNode elementWithName:@"part-list"];
|
|
[partList addChild: [self scorePartWithID:@"HARM" name:@"Chords"]];
|
|
[partList addChild: [self scorePartWithID:@"MELO" name:@"Melody"]];
|
|
|
|
NSXMLElement * chords = [NSXMLNode elementWithName:@"part"];
|
|
[chords addAttribute: [NSXMLNode attributeWithName:@"id"
|
|
stringValue:@"HARM"]];
|
|
|
|
NSXMLElement * melody = [NSXMLNode elementWithName:@"part"];
|
|
[melody addAttribute: [NSXMLNode attributeWithName:@"id"
|
|
stringValue:@"MELO"]];
|
|
|
|
for (int measure = 0; measure < song->CountMeasures(); ++measure) {
|
|
NSXMLElement * melMeas = [NSXMLNode elementWithName:@"measure"];
|
|
[melMeas addAttribute:
|
|
[NSXMLNode attributeWithName:@"number"
|
|
stringValue:[NSString stringWithFormat:@"%d",
|
|
measure+1]]];
|
|
if (!measure)
|
|
[melMeas addChild:
|
|
[self attributesWithProps:song->fProperties.front()]];
|
|
|
|
NSXMLElement * harMeas = [melMeas copy];
|
|
|
|
[self addNotes:&song->fMeasures[measure].fMelody toMeasure:melMeas];
|
|
[self addChords:&song->fMeasures[measure].fChords toMeasure:harMeas];
|
|
|
|
[melody addChild:melMeas];
|
|
[chords addChild:harMeas];
|
|
}
|
|
|
|
NSXMLElement * score =
|
|
[NSXMLNode
|
|
elementWithName:@"score-partwise"
|
|
children:[NSArray arrayWithObjects: work, identification,
|
|
partList, chords, melody, nil]
|
|
attributes:[NSArray arrayWithObject:
|
|
[NSXMLNode attributeWithName:@"version"
|
|
stringValue:@"1.1"]]];
|
|
NSXMLDocument * doc = [[[NSXMLDocument alloc]
|
|
initWithRootElement:score]
|
|
autorelease];
|
|
[doc setVersion:@"1.0"];
|
|
[doc setCharacterEncoding:@"UTF-8"];
|
|
[doc setDTD:[self partwiseDTD]];
|
|
[[doc DTD] setChildren: nil];
|
|
|
|
return [doc XMLDataWithOptions:NSXMLNodePrettyPrint|NSXMLNodeCompactEmptyElement];
|
|
}
|
|
|
|
- (BOOL)readPropsFromAttributes:(NSXMLElement*)attr error:(NSError **)outError
|
|
{
|
|
VLProperties & prop = song->fProperties.front();
|
|
|
|
prop.fDivisions = [attr intForXPath:@"./divisions" error:outError];
|
|
prop.fKey = [attr intForXPath:@"./key/fifths" error:outError];
|
|
prop.fMode = [[attr stringForXPath:@"./key/mode" error:outError]
|
|
isEqual:@"minor"] ? -1 : 1;
|
|
prop.fTime.fNum = [attr intForXPath:@"./time/beats" error:outError];
|
|
prop.fTime.fDenom = [attr intForXPath:@"./time/beat-type" error:outError];
|
|
|
|
return YES;
|
|
}
|
|
|
|
int8_t sStepToPitch[] = {
|
|
9, 11, 0, 2, 4, 5, 7
|
|
};
|
|
|
|
- (VLNote) readNote:(NSXMLElement*)note withUnit:(VLFraction)unit
|
|
{
|
|
NSError * outError;
|
|
VLNote n;
|
|
|
|
n.fTied = 0;
|
|
|
|
if ([[note elementsForName:@"rest"] count]) {
|
|
n.fPitch = VLNote::kNoPitch;
|
|
} else {
|
|
n.fPitch = ([note intForXPath:@"./pitch/octave" error:&outError]+1)*12;
|
|
n.fPitch +=
|
|
sStepToPitch[[[note stringForXPath:@"./pitch/step" error:&outError]
|
|
characterAtIndex:0] - 'A'];
|
|
if (NSXMLElement * alter = [note nodeForXPath:@"./pitch/alter" error:&outError])
|
|
n.fPitch += [[alter stringValue] intValue];
|
|
}
|
|
n.fDuration = VLFraction([note intForXPath:@"./duration" error:&outError])*unit;
|
|
|
|
return n;
|
|
}
|
|
|
|
- (void) readMelody:(NSArray *)measures error:(NSError **)outError
|
|
{
|
|
NSEnumerator * e = [measures objectEnumerator];
|
|
|
|
for (NSXMLElement * measure; measure = [e nextObject]; ) {
|
|
VLProperties & prop = song->fProperties.front();
|
|
VLFraction unit(1, 4*prop.fDivisions);
|
|
VLFraction at(0);
|
|
int m = [[[measure attributeForName:@"number"]
|
|
stringValue] intValue]-1;
|
|
|
|
if (m >= song->CountMeasures())
|
|
song->fMeasures.resize(m);
|
|
|
|
NSEnumerator * n = [[measure elementsForName:@"note"] objectEnumerator];
|
|
|
|
for (NSXMLElement * note; note = [n nextObject]; ) {
|
|
VLNote n = [self readNote:note withUnit:unit];
|
|
if (n.fPitch != VLNote::kNoPitch)
|
|
song->AddNote(n, m, at);
|
|
at += n.fDuration;
|
|
}
|
|
}
|
|
}
|
|
|
|
- (void) readChords:(NSArray *)measures error:(NSError **)outError
|
|
{
|
|
NSEnumerator * e = [measures objectEnumerator];
|
|
|
|
for (NSXMLElement * measure; measure = [e nextObject]; ) {
|
|
VLProperties & prop = song->fProperties.front();
|
|
VLFraction unit(1, 4*prop.fDivisions);
|
|
VLFraction at(0);
|
|
VLFraction dur(0);
|
|
int m = [[[measure attributeForName:@"number"]
|
|
stringValue] intValue]-1;
|
|
VLChord chord;
|
|
|
|
chord.fSteps = 0;
|
|
if (m >= song->CountMeasures())
|
|
song->fMeasures.resize(m);
|
|
|
|
NSEnumerator * n = [[measure elementsForName:@"note"] objectEnumerator];
|
|
|
|
for (NSXMLElement * note; note = [n nextObject]; ) {
|
|
VLNote n = [self readNote:note withUnit:unit];
|
|
if (![[note elementsForName:@"chord"] count]) {
|
|
//
|
|
// Start of new chord
|
|
//
|
|
if (chord.fSteps)
|
|
song->AddChord(chord, m, at);
|
|
at += dur;
|
|
chord.fPitch = n.fPitch;
|
|
chord.fRootPitch= VLNote::kNoPitch;
|
|
chord.fDuration = n.fDuration;
|
|
chord.fSteps = n.fPitch == VLNote::kNoPitch ? 0 : VLChord::kmUnison;
|
|
dur = n.fDuration;
|
|
if (n.fPitch < VLNote::kMiddleC) {
|
|
chord.fPitch = VLNote::kNoPitch;
|
|
chord.fRootPitch= n.fPitch;
|
|
}
|
|
} else if (chord.fPitch == VLNote::kNoPitch) {
|
|
chord.fPitch = n.fPitch;
|
|
} else {
|
|
chord.fSteps |= 1 << (n.fPitch-chord.fPitch);
|
|
}
|
|
}
|
|
if (chord.fSteps)
|
|
song->AddChord(chord, m, at);
|
|
}
|
|
}
|
|
|
|
- (BOOL)readFromXMLData:(NSData *)data error:(NSError **)outError
|
|
{
|
|
NSXMLDocument * doc = [[NSXMLDocument alloc] initWithData:data
|
|
options:0
|
|
error:outError];
|
|
//
|
|
// For now, in gross violation of MusicXML spirit, we're only reading
|
|
// our own input.
|
|
//
|
|
songTitle = [[doc stringForXPath:@".//work-title" error:outError] retain];
|
|
songComposer= [[doc stringForXPath:@".//creator[@type=\"composer\"]"
|
|
error: outError] retain];
|
|
songLyricist= [[doc stringForXPath:@".//creator[@type=\"poet\"]"
|
|
error: outError] retain];
|
|
|
|
NSXMLElement * chords = [doc nodeForXPath:@".//part[@id=\"HARM\"]"
|
|
error:outError];
|
|
NSXMLElement * melody = [doc nodeForXPath:@".//part[@id=\"MELO\"]"
|
|
error:outError];
|
|
|
|
if (!chords || !melody)
|
|
return NO;
|
|
if (![self readPropsFromAttributes:
|
|
[melody nodeForXPath:@".//attributes" error:outError]
|
|
error:outError]
|
|
)
|
|
return NO;
|
|
|
|
[self readMelody:[melody nodesForXPath:@"./measure" error:outError]
|
|
error:outError];
|
|
[self readChords:[chords nodesForXPath:@"./measure" error:outError]
|
|
error:outError];
|
|
|
|
return YES;
|
|
}
|
|
|
|
@end
|