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|
unit preamble;
{$X+}
{ Interpret preamble paragraph, compose PMX preamble }
interface uses globals;
function thisCase: boolean;
procedure preambleDefaults;
procedure interpretCommands;
procedure doPreamble;
procedure doPMXpreamble;
procedure respace;
procedure restyle;
function startString(voice: voice_index0): string;
procedure augmentPreamble(control_para: boolean);
function omitLine(line: paragraph_index): boolean;
procedure nonMusic;
procedure setOnly(line: string);
function isCommand(command: string): boolean;
const known = true;
implementation uses control, mtxline, strings, files, status, utility;
const blank = ' ';
colon = ':';
semicolon = ';';
comma = ',';
known_styles: integer = 12;
max_styles = 24;
warn_redefine: boolean = false;
type command_type =
( none, title, composer, pmx, tex, options, msize, bars, shortnote,
style, sharps, flats, meter, space, pages, systems, width, height,
enable, disable, range, name, indent,
poet, part, only, octave, start );
line_type = ( unknown, colon_line, command_line, comment_line,
plain_line );
style_index = 1..max_styles;
style_index0 = 0..max_styles;
const c1 = title; cn = start;
commands: array[command_type] of string[16] =
( 'NONE', 'TITLE', 'COMPOSER', 'PMX', 'TEX', 'OPTIONS',
'SIZE', 'BARS/LINE', 'SHORT',
'STYLE', 'SHARPS', 'FLATS', 'METER', 'SPACE', 'PAGES', 'SYSTEMS', 'WIDTH',
'HEIGHT', 'ENABLE', 'DISABLE', 'RANGE',
'NAME', 'INDENT', 'POET', 'PART', 'ONLY', 'OCTAVE', 'START');
cline: array[command_type] of string =
( '', '', '', '', '', '', '', '', '1/4', (* short *)
'', '0', '', 'C', '', '1', '1', (* systems *)
'190mm', '260mm', '', '', '', '', '', '', '', '', '', '' );
redefined: array[command_type] of boolean =
( false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false );
(** Known styles *)
known_style: array[style_index] of string = (
'SATB: Voices S,A T,B; Choral; Clefs G F',
'SATB4: Voices S A T B; Choral; Clefs G G G8 F',
'SINGER: Voices Voice; Vocal; Clefs G',
'PIANO: Voices RH LH; Continuo; Clefs G F',
'ORGAN: Voices RH LH Ped; Continuo; Clefs G F F',
'SOLO: Voices V; Clefs G',
'DUET: Voices V1 Vc; Clefs G F',
'TRIO: Voices V1 Va Vc; Clefs G C F',
'QUARTET: Voices V1 V2 Va Vc; Clefs G G C F',
'QUINTET: Voices V1 V2 Va Vc1 Vc2; Clefs G G C F F',
'SEXTET: Voices V1 V2 Va1 Va2 Vc1 Vc2; Clefs G G C C F F',
'SEPTET: Voices V1 V2 Va1 Va2 Vc1 Vc2 Cb; Clefs G G C C F F F',
'', '', '', '', '', '', '', '', '', '', '', '');
var old_known_styles: style_index;
style_used: array[style_index] of boolean;
omit_line: array[paragraph_index] of boolean;
orig_style_line: array[style_index] of style_index0;
orig_range_line: integer;
var nclefs, n_pages, n_systems, n_sharps, ngroups: integer;
part_line, title_line, composer_line, pmx_line, options_line,
start_line, voices, clefs: string;
group_start, group_stop: array[1..maxgroups] of integer;
instr_name: array[stave_index] of string[40];
style_supplied: boolean;
{ ------------------ Styles ------------------ }
function voiceCount(s: string): voice_index0;
var i, l: integer;
begin l:=length(s); for i:=1 to l do if s[i]=comma then s[i]:=blank;
voiceCount:=wordCount(s);
end;
function findStyle(s: string): style_index0;
var i: style_index0;
begin
i:=0; s:=s+colon; findStyle:=0;
while i<known_styles do
begin inc(i);
if startsWithIgnoreCase(known_style[i],s) then
begin findStyle:=i; exit; end;
end;
end;
procedure addStyle (S: string);
var sn: style_index0;
begin
sn:=findStyle(NextWord(S,colon,dummy));
if sn>0 then known_style[sn] := S
else if known_styles < max_styles then
begin inc(known_styles);
known_style[known_styles] := S;
end
else error('Can''t add another style - table full',print);
end;
procedure readStyles;
var eofstyle: boolean;
S: string;
l: style_index0;
begin if styleFileFound then eofstyle:=true else eofstyle := eof(stylefile);
l:=0;
while not eofstyle do
begin readln(stylefile,S); if S<>'' then
begin addStyle(S); inc(l); orig_style_line[known_styles]:=l; end;
eofstyle := eof(stylefile);
end;
end;
procedure applyStyle(s, stylename: string;
first_inst, first_stave: stave_index);
var clef, subline, subcommand: string;
i, last_inst, last_stave: stave_index0;
continuo, toosoon, vocal: boolean;
begin last_inst:=first_inst-1;
toosoon := false; continuo:=false; vocal := false;
subline:=GetNextWord(s,blank,colon);
while s<>'' do
begin subline:=GetNextWord(s,semicolon,dummy);
i:=curtail(subline,semicolon);
subcommand:=GetNextWord(subline,blank,dummy);
if equalsIgnoreCase(subcommand,'VOICES') then
begin voices:=voices+' '+subline;
last_stave := first_stave + wordCount(subline) - 1;
last_inst := first_inst + voiceCount(subline) - 1;
end
else if equalsIgnoreCase(subcommand,'CLEFS')
then
begin clef:=subline; clefs:=clefs+' '+clef; end
else if equalsIgnoreCase(subcommand,'VOCAL') then
if last_inst<first_inst then toosoon:=true
else begin some_vocal := true; vocal := true;
for i:=first_inst to last_inst do setVocal(i,true);
end
else if equalsIgnoreCase(subcommand,'CHORAL') or
equalsIgnoreCase(subcommand,'GROUP') then
if last_inst<first_inst then toosoon:=true
else begin
if equalsIgnoreCase(subcommand,'CHORAL') then
begin some_vocal := true; vocal := true;
for i:=first_inst to last_inst do setVocal(i,true);
end;
if ngroups=maxgroups then error('Too many groups',print)
else begin inc(ngroups);
group_start[ngroups] := first_stave;
group_stop[ngroups] := last_stave;
end
end
else if equalsIgnoreCase(subcommand,'CONTINUO') then continuo := true
else error('Subcommand ' + subcommand + ' in STYLE unknown',print);
if toosoon then
error('You must first give VOICES before specifying ' + subcommand,
print);
end;
if vocal and continuo then error(
'A continuo instrument may not be vocal',print);
if wordCount(clef)<>last_stave-first_stave+1 then error(
'Number of clefs does not match number of voices',print);
if (first_stave=last_stave) or continuo
then instr_name[first_stave]:=stylename
else for i:=first_stave to last_stave do instr_name[i]:='';
if continuo then
begin inc(ninstr); stave[ninstr] := first_stave;
for i:=first_stave to last_stave do instr[i]:=ninstr;
end
else for i:=first_stave to last_stave do
begin inc(ninstr); stave[ninstr] := i; instr[i] := ninstr;
end;
end;
procedure applyStyles;
var n1, n2, sn: integer;
s: string;
begin voices:=''; clefs:=''; ninstr:=0;
while cline[style]<>'' do
begin n1:=voiceCount(voices)+1;
n2:=wordCount(voices)+1;
s:=GetNextWord(cline[style],blank,comma);
curtail(s,comma);
sn:=findStyle(s); if sn=0 then error ('Style ' + s +' unknown',print);
line_no := orig_style_line[sn]; applyStyle(known_style[sn],s,n1,n2);
style_used[sn] := true;
end;
end;
{ ------------------------------------------------------------- }
procedure wipeCommands;
var c: command_type;
begin for c:=c1 to cn do cline[c]:='';
end;
function omitLine(line: paragraph_index): boolean;
begin omitLine := (line>0) and omit_line[line]
end;
procedure setName;
var i: integer;
begin if not redefined[name] then exit;
setFeature('instrumentNames',true);
for i:=1 to ninstr do
instr_name[i] := getNextWord(cline[name],blank,dummy);
end;
procedure setIndent;
begin if redefined[indent] then fracindent := cline[indent];
end;
procedure setInitOctave;
begin if redefined[octave] then initOctaves(cline[octave]);
end;
procedure setVoices(var line: string);
var k: integer;
s, w: string;
procedure checkLabel(w: string);
var j: voice_index;
begin
for j:=1 to nvoices do if w=voice_label[j] then
begin warning('Voice label '+w+' not unique',print); exit;
end;
if length(w)>2 then exit;
if pos1(w[1],'CLU')>0 then
if length(w)>1 then if pos1(w[2],'123456789')=0 then exit
else
else
else if pos1(w[1],'123456789')=0 then exit;
error('Voice label '+w+' conflicts with reserved label',print);
end;
begin nvoices:=0; nstaves:=0;
repeat s:=GetNextWord(line,blank,dummy);
if length(s)>0 then
begin inc(nstaves); k:=0;
first_on_stave[nstaves] := nvoices + 1;
repeat
w:=GetNextWord(s,blank,comma); curtail(w, comma);
if w<>'' then
begin
inc(k); if k<=2 then
begin inc(nvoices); checkLabel(w);
voice_label[nvoices]:=w;
if instr_name[nstaves]='' then instr_name[nstaves]:=w;
setStavePos(nvoices,nstaves,k);
end
end;
until w='';
if k>2 then error('More than two voices per stave: ' + s,print);
if k=2 then instr_name[nstaves]:='\mtxTwoInstruments{'
+ voice_label[nvoices-1] + '}{'+ voice_label[nvoices] + '}';
number_on_stave[nstaves] := k;
end
until length(line)=0;
for k:=1 to nvoices do selected[k]:=true;
end;
procedure setClefs(line: string);
var s: string;
begin
nclefs:=0;
repeat
s:=getnextword(line,blank,dummy);
if s<>'' then
begin inc(nclefs);
if length(s)=1 then clef[nclefs]:=s[1] else clef[nclefs]:=s[2];
end;
until s='';
end;
procedure setDimension(line: string; lno: command_type);
var l, n, p: integer;
begin
if line = '' then exit;
l := length(line);
n := 0;
p := 0;
repeat n := n+1;
if line[n]='.' then p:=p+1;
until (n>l) or not ((line[n]='.') or (line[n]>='0') and (line[n]<='9'));
if (n=p) or (p>1) or
not ((line[n]='i') or (line[n]='m') or (line[n]='p')) then
error('Dimension must be a number followed by in, mm or pt',print);
cline[lno] := 'w' + substr(line,1,n);
end;
procedure setSize(line: string);
var i: stave_index0;
word: string;
begin i:=0;
while i<ninstr do
begin word:=GetNextWord(line,blank,dummy);
if word='' then break;
inc(i); getNum(word,musicsize);
stave_size[i] := musicsize;
end;
if not (musicsize in [16,20]) then
for i:=1 to ninstr do
if stave_size[i] = unspec then stave_size[i] := musicsize;
if musicsize<16 then musicsize:=16
else if musicsize>20 then musicsize:=20;
end;
function findCommand(var command: string): command_type;
var j: command_type;
begin curtail(command,':');
if equalsIgnoreCase(command,'STYLE') then style_supplied := true;
for j:=c1 to cn do if equalsIgnoreCase(command,commands[j]) then
begin findCommand:=j; exit; end;
findCommand:=none;
end;
function isCommand(command: string): boolean;
begin isCommand:=findCommand(command)<>none end;
function mustAppend(command: command_type): boolean;
begin mustAppend := command=tex end;
procedure doEnable(var line: string; choice: boolean);
var word: string;
begin
repeat word:=GetNextWord(line,blank,dummy);
if word<>'' then if not setFeature(word,choice) then
Error('No such feature: '+word,not print)
until word=''
end;
procedure setRange(line: string);
var v,p: integer;
vl: string;
begin
line_no := orig_range_line;
for v:=1 to nvoices do
begin vl := voice_label[v];
p:=pos(vl+'=',line);
if p>0 then
begin
if length(line)<p+6 then
error('At least five characters must follow "'+vl+'="',
print);
defineRange(v,substr(line,p+1+length(vl),5));
end
else begin
warning('No range defined for voice '+vl,print);
defineRange(v,'');
end
end;
end;
{ TODO: This procedure should test for assertions in a comment
or be removed }
function isAssertion(var line: string): boolean;
begin
isAssertion := false
end;
function doCommand(line: string): line_type;
var command: string;
last_command: command_type;
starts_with_note: boolean;
begin
if (line[1]=comment) and not isAssertion(line) then
begin doCommand:=comment_line; exit; end;
starts_with_note := maybeMusicLine(line);
command:=GetNextWord(line,blank,colon);
if endsWith(command,colon) then
begin last_command:=findCommand(command);
doCommand:=command_line;
if last_command = enable then doEnable(line,true)
else if last_command = disable then doEnable(line,false)
else if last_command = range then orig_range_line := line_no;
if last_command<>none then
begin
if mustAppend(last_command) and redefined[last_command] then
begin
if length(cline[last_command])+length(line)>254 then
error('Total length of preamble command '+commands[last_command]+
' must not exceed 255',not print);
cline[last_command]:=cline[last_command]+#10+line
end
else
begin cline[last_command]:=line;
if warn_redefine and redefined[last_command] then
warning('You have redefined preamble command '+command,print);
end;
if last_command=start then start_line:=line;
redefined[last_command]:=true;
end
else begin doCommand:=colon_line; addStyle(command+colon+' '+line);
orig_style_line[known_styles] := line_no;
end
end
else if starts_with_note then doCommand:=plain_line
else doCommand:=unknown;
end;
procedure setOnly(line: string);
var num, num1, num2, l: integer;
s: string;
begin if line='' then exit;
if startsWithIgnoreCase(line,'only') then GetNextWord(line,colon,dummy);
for l:=1 to lines_in_paragraph do omit_line[l]:=true;
repeat s:=GetNextWord(line,blank,comma); if s='' then exit;
curtail(s, comma);
if pos1('-',s)=0 then
begin getNum(s,num);
if (num>0) and (num<=lines_in_paragraph) then omit_line[num]:=false
else warning('Invalid line number in Only: is skipped',print);
end else
begin getTwoNums(s,num1,num2);
if (num1>0) and (num2<=lines_in_paragraph) then
for num:=num1 to num2 do omit_line[num]:=false
else warning('Invalid line range in Only: is skipped',print);
end;
until false;
end;
procedure interpretCommands;
var i, num, den, nbars: integer;
begin
title_line := cline[title];
part_line := cline[part];
if (cline[poet]<>'') or (cline[composer]<>'') then
composer_line:='\mtxComposerLine{'+cline[poet]+'}{'+cline[composer]+'}'
else composer_line:='';
pmx_line := cline[pmx];
options_line := GetNextWord(cline[options],blank,dummy);
for i:=1 to known_styles do style_used[i] := false;
applyStyles; setVoices(voices);
for i:=old_known_styles+1 to known_styles do
if not style_used[i] then
begin warning('The following style was supplied but not used',not print);
writeln(known_style[i]);
end;
setClefs(clefs);
if not redefined[meter] then warning(
'You have not defined Meter, assuming "'+cline[meter]+'" ',not print);
getMeter(cline[meter],meternum, meterdenom, pmnum, pmdenom);
setDefaultDuration(meterdenom);
if (meternum=0) and
not (redefined[pages] or redefined[systems] or redefined[bars])
then begin cline[bars] := '1'; redefined[bars]:=true; end;
if redefined[pages] or redefined[systems] then
begin if redefined[bars] then
warning('BARS/LINE ignored since you specified PAGES or SYSTEMS',print);
if redefined[systems] then getNum(cline[systems],n_systems)
else warning('PAGES specified but not SYSTEMS',not print);
if redefined[pages] then getNum(cline[pages],n_pages)
else warning('SYSTEMS specified but not PAGES',not print);
end
else if redefined[bars] then
begin getNum(cline[bars],nbars); if nbars>0 then
begin n_pages:=0; n_systems:=nbars end;
end;
getNum(cline[sharps],n_sharps);
setSpace(cline[space]);
setSize(cline[msize]);
getTwoNums(cline[shortnote],num, den); if den=0 then den:=1;
short_note := (num*64) div den;
if cline[flats]<>'' then
begin getNum(cline[flats],n_sharps); n_sharps:=-n_sharps; end;
setName; setIndent; setInitOctave; setOnly(cline[only]);
setRange(cline[range]);
setDimension(cline[width],width);
setDimension(cline[height],height);
if options_line <>'' then begin
warning('"Options" is cryptic and obsolescent.', not print);
writeln(' Use "Enable" and "Disable" instead.')
end;
for i:=1 to length(options_line) do processOption(options_line[i]);
end;
procedure preambleDefaults;
var i: integer;
begin
xmtrnum0:=0; fracindent:='0'; musicsize:=20; start_line:='';
some_vocal:=false; ngroups:=0;
style_supplied := false;
for i:=1 to maxvoices do setVocal(i,false);
for i:=1 to maxstaves do stave_size[i]:=unspec;
for i:=0 to maxstaves do nspace[i]:=unspec;
begin nspace[i]:=unspec; stave_size[i]:=unspec; end;
n_pages:=1; n_systems:=1;
readStyles; old_known_styles := known_styles;
for i:=1 to lines_in_paragraph do omit_line[i]:=false;
end;
procedure preambleGuess(maybe_voices: voice_index);
begin
case maybe_voices of
1: cline[style] := 'Solo';
2: cline[style] := 'Duet';
3: cline[style] := 'Trio';
4: cline[style] := 'Quartet';
5: cline[style] := 'Quintet';
6: cline[style] := 'Sextet';
7: cline[style] := 'Septet';
else begin error('I cannot guess a style',not print); exit; end;
end;
writeln('I guess this piece is a ',cline[style],
' for strings in C major.');
writeln(' Why not provide a STYLE in the setup paragraph to make sure?');
end;
{ ------------------------------------------------------------------ }
procedure nonMusic;
var i: paragraph_index;
begin for i:=1 to para_len do doCommand(P[i]);
setOnly(cline[only]); wipeCommands;
end;
function thisCase: boolean;
begin thisCase:=true;
if not startsWithIgnoreCase(P[1],'case:') then exit;
thisCase:=(choice<>' ') and (pos1(choice,P[1])>0); P[1]:='%';
end;
procedure augmentPreamble(control_para: boolean);
var i: paragraph_index;
l: line_type;
s: array[line_type] of integer;
begin
if not thisCase then exit;
for l:=unknown to plain_line do s[l]:=0;
for i:=1 to para_len do
begin line_no:=orig_line_no[i]; l:=doCommand(P[i]);
inc(s[l]);
if (l=comment_line) and (P[i,2]=comment)
then begin predelete(P[i],2); putLine(P[i]); end;
if not control_para and (l=unknown) then
error('Unidentifiable line',print);
end;
if not control_para and (s[command_line]>0) and (s[plain_line]>0)
then error('Mixture of preamble commands and music',not print);
end;
procedure doPreamble;
var i: paragraph_index;
maybe_voices: voice_index0;
begin maybe_voices:=0;
if not style_supplied then
begin {augmentPreamble(not known);}
if not style_supplied then warning('No STYLE supplied',not print);
for i:=1 to para_len do if maybeMusicLine(P[i]) then
inc(maybe_voices);
if maybe_voices>0 then preambleGuess(maybe_voices)
else error('No voices found',not print);
end
end;
procedure respace;
var i, j: stave_index;
begin
for i:=ninstr downto 2 do
begin j:=ninstr-i+1;
if nspace[j]<>unspec then TeXtype2('\mtxInterInstrument{'+toString(i-1)+
'}{'+toString(nspace[j])+'}');
end;
if nspace[ninstr]<>unspec then TeXtype2('\mtxStaffBottom{'+
toString(nspace[ninstr])+'}');
must_respace:=false;
end;
procedure restyle;
begin
must_restyle:=false;
end;
function clefno ( cl: char ): integer;
begin
case cl of
'G','0','t','8': clefno:=0;
's','1': clefno:=1;
'm','2': clefno:=2;
'a','3': clefno:=3;
'n','4': clefno:=4;
'r','5': clefno:=5;
'F','b','6': clefno:=6;
'C': clefno:=3;
else
begin warning('Unknown clef code "' + cl + '" - replaced by treble',print);
clefno:=0;
end;
end
end;
procedure doTenorClefs;
var i: voice_index;
c: char;
begin for i:=1 to nclefs do
begin
c:=clef[i]; if (c='8') or (c='t') then
putLine('\\mtxTenorClef{' + toString(PMXinstr(i)) + '}\' );
end;
end;
procedure insertTeX;
begin
if redefined[tex] then TeXtype2(cline[tex]);
end;
procedure doPMXpreamble;
const clefcode: string[8]='0123456';
var i, j: integer;
clefs: string;
function pmxMeter: string;
var denom, num: integer;
begin if meternum=0 then
begin num := beatsPerLine; {* denom := 0; *}
old_meter_word := meterChange(num,meterdenom,true);
end
else begin num := meternum; {* denom := pmdenom; *} end;
{ CMO: unconditonally assign value of pmdenom to denom }
denom := pmdenom;
pmxMeter := toString(num) + ' ' + toString(PMXmeterdenom(meterdenom)) +
' ' + toString(pmnum) + ' ' + toString(denom);
end;
function sizecode(k: integer): string;
begin sizecode:='\mtxNormalSize';
case k of
13: if musicsize=20 then sizecode:='\mtxTinySize' else sizecode:='\mtxSmallSize';
16: if musicsize=20 then sizecode:='\mtxSmallSize';
20: if musicsize=16 then sizecode:='\mtxLargeSize';
24: if musicsize=20 then sizecode:='\mtxLargeSize' else sizecode:='\mtxHugeSize';
29: sizecode:='\mtxHugeSize';
else error('Valid sizes are 13, 16, 20, 24, 29',print);
end;
end;
begin
if composer_line <> '' then putline(composer_line);
if title_line <> '' then putline('\mtxTitleLine{'+title_line+'}');
putLine('---');
if instrumentNames and not redefined[indent] then fracindent:='0.12';
write(outfile, nstaves);
write(outfile, ' ', -ninstr);
stave[ninstr+1]:=nstaves+1;
for j:=ninstr downto 1 do write(outfile, ' ', stave[j+1] - stave[j]);
writeln(outfile, ' ', pmxMeter, ' ',xmtrnum0:8:5, ' ',n_sharps,
' ', n_pages, ' ',n_systems, ' ',musicsize, ' ',fracindent);
for i:=1 to ninstr do if not instrumentNames then putLine('')
else putLine('\mtxInstrName{'+instr_name[ninstr+1-i]+'}');
clefs:='';
for i:=nclefs downto 1 do clefs:=clefs+clefcode[1+clefno(clef[i])];
putLine(clefs);
if texdir='' then texdir := './';
putLine(texdir);
pmx_preamble_done:=true; insertTeX; respace;
for j:=1 to ngroups do
writeln(outfile,'\\mtxGroup{'+toString(j)+'}{'
+toString(ninstr+1-group_start[j])+'}{'
+toString(ninstr+1-group_stop[j])+'}\');
for j:=1 to ninstr do
if (stave_size[j]<>unspec) then
putLine(
'\\mtxSetSize{'+toString(ninstr+1-j)+'}{'+sizecode(stave_size[j])+'}\');
if part_line <> '' then
begin putLine('Ti'); putLine(part_line); end;
if composer_line <> '' then
begin putLine('Tc'); putLine('\mtxPoetComposer'); end;
if title_line <> '' then
begin write(outfile,'Tt');
if nspace[0] <> unspec then write(outfile,toString(nspace[0]));
writeln(outfile);
putLine('\mtxTitle');
end;
if pmx_line <> '' then putLine(pmx_line);
doTenorClefs;
if cline[width] <> '' then putLine(cline[width]);
wipeCommands;
end;
function startString(voice: voice_index0): string;
var s, w: string;
j: voice_index;
begin s:=start_line;
for j:=1 to voice do w:=getNextWord(s,dummy,';');
curtail(w,';'); if w<>'' then startString:=w+' ' else startString:=w;
end;
end.
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