parse.c

/*
 * Parsing functions.
 *
 * This file is part of abcm2ps.
 *
 * Copyright (C) 1998-2008 Jean-François Moine
 * Adapted from abc2ps, Copyright (C) 1996,1997 Michael Methfessel
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>

#include "abcparse.h"
#include "abc2ps.h" 

struct STAFF_S staff_tb[MAXSTAFF];  /* staff table */
int nstaff;                   /* (0..MAXSTAFF-1) */
struct SYMBOL *tsfirst;             /* first symbol in the time sorted list */

struct VOICE_S voice_tb[MAXVOICE];  /* voice table */
static struct VOICE_S *curvoice;    /* current voice while parsing */
struct VOICE_S *first_voice;        /* first voice */
struct SYSTEM *cursys;              /* current system */
static struct SYSTEM *parsys;       /* current system while parsing */

struct FORMAT dfmt;           /* current global format */
unsigned short *micro_tb;     /* ptr to the microtone table of the tune */

static int lyric_nb;                /* current number of lyric lines */
static struct SYMBOL *lyric_start;  /* 1st note of the line for w: */
static struct SYMBOL *lyric_cont;   /* current symbol when w: continuation */

static int over_time;               /* voice overlay start time */
static int over_mxtime;             /* voice overlay max time */
static short over_bar;              /* voice overlay in a measure */
static short over_voice;            /* main voice in voice overlay */
static int staves_found;            /* time of the last %%staves */
static int abc2win;

static int bar_number;              /* (for %%setbarnb) */

float multicol_start;               /* (for multicol) */
static float multicol_max;
static float lmarg, rmarg;

static void get_clef(struct SYMBOL *s);
static void get_key(struct SYMBOL *s);
static void get_meter(struct SYMBOL *s);
static void get_voice(struct SYMBOL *s);
static void get_note(struct SYMBOL *s);
static struct abcsym *process_pscomment(struct abcsym *as);
static void set_tuplet(struct SYMBOL *s);
static void sym_link(struct SYMBOL *s, int type);

/* -- get the weight of a symbol -- */
static int get_weight(struct SYMBOL *s)
{
static signed char w_tb[15] = {     /* !! index = symbol type !! */
      0,
      9,    /* 1- note / rest */
      1,    /* 2- space */
      3,    /* 3- bar (3 or -1) */
      2,    /* 4- clef */
      5,    /* 5- timesig */
      4,    /* 6- keysig */
      0,    /* 7- tempo */
      0,    /* 8- staves */
      9,    /* 9- mrest */
      0,    /* 10- part */
      8,    /* 11- grace */
      0,    /* 12- fmtchg */
      7,    /* 13- tuplet */
      6     /* 14- stbrk */
};

#if 0
      if (s->type == BAR && s->prev != 0 && s->prev->type == BAR)
            return -1;  /* don't separate the bars */
#endif
      return w_tb[s->type];
}

/* -- expand a multi-rest into single rests and measure bars -- */
static void mrest_expand(struct SYMBOL *s)
{
      struct VOICE_S *p_voice;
      struct SYMBOL *s2, *next;
      int nb, dt;

      nb = s->as.u.bar.len;
      dt = s->dur / nb;

      /* change the multi-rest to a single rest */
      s->type = NOTEREST;
      s->as.type = ABC_T_REST;
      s->as.u.note.nhd = 0;
      s->dur = s->as.u.note.lens[0] = dt;
      s->head = H_FULL;
      s->nflags = -2;

      /* add the bar / rest */
      next = s->next;
      p_voice = &voice_tb[s->voice];
      p_voice->last_sym = s;
      p_voice->time = s->time + dt;
      s2 = 0;                       /* (compiler warning) */
      while (--nb > 0) {
            s2 = sym_add(p_voice, BAR);
            s2->as.type = ABC_T_BAR;
            s2->as.u.bar.type = B_SINGLE;
            s2->as.linenum = s->as.linenum;
            s2->as.colnum = s->as.colnum;
            s2 = sym_add(p_voice, NOTEREST);
            s2->as.type = ABC_T_REST;
            s2->as.linenum = s->as.linenum;
            s2->as.colnum = s->as.colnum;
            s2->dur = s2->as.u.note.lens[0] = dt;
            s2->head = H_FULL;
            s2->nflags = -2;
            p_voice->time += dt;
      }
      if ((s2->next = next) != 0)
            next->prev = s2;
}

/* -- sort all symbols by time and vertical sequence -- */
static void sort_all(void)
{
      struct SYMBOL *s, *prev;
      struct VOICE_S *p_voice;
      int fl, voice, time, w, wmin, multi, mrest_time;
      int nv, nb;
      struct SYMBOL *vtb[MAXVOICE];
      signed char w_tb[MAXVOICE];

/*    memset(vtb, 0, sizeof vtb); */
      mrest_time = -1;
      multi = first_voice->next != 0;
      for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
            vtb[p_voice - voice_tb] = s = p_voice->sym;
            if (multi && s != 0 && s->type == MREST && mrest_time < s->time)
                  mrest_time = s->time;
      }
      prev = 0;
      fl = 1;                 /* set start of sequence */
      for (;;) {

            /* search the min time and symbol weight */
            wmin = time = (unsigned) ~0 >> 1;   /* max int */
            nv = nb = 0;
            for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
                  voice = p_voice - voice_tb;
                  s = vtb[voice];
                  if (s == 0 || s->time > time)
                        continue;
                  w = get_weight(s);
                  w_tb[voice] = w;
                  if (s->time < time) {
                        time = s->time;
                        wmin = w;
                  } else if (w < wmin)
                        wmin = w;
                  if (!(s->sflags & S_SECOND)) {
                        nv++;
                        if (s->type == BAR)
                              nb++;
                  }
            }
            if (wmin > 127)
                  break;                  /* done */

            /* align the measure bars */
            if (nb != 0 && nb != nv) {    /* if other symbol than bars */
                  wmin = time = (unsigned) ~0 >> 1;
                  for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
                        voice = p_voice - voice_tb;
                        s = vtb[voice];
                        if (s == 0 || s->time > time
                            || s->type == BAR)
                              continue;
                        w = w_tb[voice];
                        if (s->time < time) {
                              time = s->time;
                              wmin = w;
                        } else if (w < wmin)
                              wmin = w;
                  }
            }

            /* if some multi-rest and many voices, expand */
            if (time == mrest_time) {
                  for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
                        voice = p_voice - voice_tb;
                        s = vtb[voice];
                        w = w_tb[voice];
                        if (s == 0 || s->time != time || w != wmin)
                              continue;
                        if (s->type != MREST) {
                              mrest_time = 0;   /* some note or rest */
                              break;
                        }
                  }
                  if (!mrest_time) {
                        for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
                              voice = p_voice - voice_tb;
                              s = vtb[voice];
                              if (s != 0 && s->type == MREST)
                                    mrest_expand(s);
                        }
                  }
            }

            /* link the vertical sequence */
            for (p_voice = first_voice; p_voice != 0; p_voice = p_voice->next) {
                  voice = p_voice - voice_tb;
                  s = vtb[voice];
                  w = w_tb[voice];
                  if (s == 0 || s->time != time || w != wmin)
                        continue;
                  if (fl) {
                        fl = 0;
                        s->sflags |= S_SEQST;
                  }
                  if ((s->ts_prev = prev) != 0) {
                        prev->ts_next = s;
                        if (s->type == BAR
                            && (s->sflags & S_SECOND)
                            && prev->type != BAR
                            && !(s->as.flags & ABC_F_INVIS))
                              error(1, s,
                                    "Bad measure bar");
                  } else      tsfirst = s;
                  prev = s;
                  vtb[voice] = s->next;
                  if (multi && s->next != 0 && s->next->type == MREST)
                        mrest_time = s->next->time;
            }
            fl = wmin;  /* start a new sequence if some space */
      }

      /* if no bar or format_change at end of tune, add a dummy symbol */
      if (prev != 0 && prev->type != BAR && prev->type != FMTCHG) {
            s = info['T' - 'A'];
            prev->ts_next = s;
            s->ts_prev = prev;
            s->type = FMTCHG;
            s->u = -1;
            s->sflags = S_SEQST;
            s->time = prev->time + prev->dur;
            for (;;) {
                  prev->sflags &= ~S_EOLN;
                  if (prev->sflags & S_SEQST)
                        break;
                  prev = prev->ts_prev;
            }
      }
}

/* -- move the symbols with no space to the next sysmbol -- */
static void voice_compress(void)
{
      struct VOICE_S *p_voice;
      struct SYMBOL *s, *s2, *ns;
      int sflags;

      for (p_voice = first_voice; p_voice; p_voice = p_voice->next) {
            for (s = p_voice->sym; s != 0; s = s->next) {
                  if (s->time >= staves_found)
                        break;
            }
            ns = 0;
            sflags = 0;
            for ( ; s != 0; s = s->next) {
                  switch (s->type) {
                  case TEMPO:
                  case PART:
                  case TUPLET:
                  case FMTCHG:
/*fixme:and STAVES?*/
                        if (ns == 0)
                              ns = s;
                        sflags |= s->sflags;
                        continue;
                  }
                  if (s->as.flags & ABC_F_GRACE) {
                        if (ns == 0)
                              ns = s;
                        while (!(s->as.flags & ABC_F_GR_END))
                              s = s->next;
                        s2 = (struct SYMBOL *) getarena(sizeof *s);
                        memcpy(s2, s, sizeof *s2);
                        s2->as.type = 0;
                        s2->type = GRACE;
                        s2->dur = 0;
                        if ((s2->next = s->next) != 0)
                              s2->next->prev = s2;
                        else  p_voice->last_sym = s2;
                        s2->prev = s;
                        s->next = s2;
                        s = s2;
                  }
                  if (ns == 0)
                        continue;
                  s->extra = ns;
                  s->sflags |= (sflags & S_EOLN);
                  s->prev->next = 0;
                  if ((s->prev = ns->prev) != 0)
                        s->prev->next = s;
                  else  p_voice->sym = s;
                  ns->prev = 0;
                  ns = 0;
                  sflags = 0;
            }
            if (ns != 0) {
                  s = sym_add(p_voice, FMTCHG);
                  s->u = -1;        /* nothing */
                  s->extra = ns;
                  s->prev->next = 0;
                  if ((s->prev = ns->prev) != 0)
                        s->prev->next = s;
                  else  p_voice->sym = s;
                  ns->prev = 0;
            }
      }
}

/* -- duplicate the voices as required -- */
static void voice_dup(void)
{
      struct VOICE_S *p_voice, *p_voice2;
      struct SYMBOL *s, *s2, *g, *g2;
      int voice;

      for (p_voice = first_voice; p_voice; p_voice = p_voice->next) {
            if ((voice = p_voice->clone) < 0)
                  continue;
            p_voice->clone = -1;
            p_voice2 = &voice_tb[voice];
            for (s = p_voice->sym; s != 0; s = s->next) {
                  if (s->time >= staves_found)
                        break;
            }
            for ( ; s != 0; s = s->next) {
                  s2 = (struct SYMBOL *) getarena(sizeof *s2);
                  memcpy(s2, s, sizeof *s2);
                  if (p_voice2->sym != 0) {
                        p_voice2->last_sym->next = s2;
                        s2->prev = p_voice2->last_sym;
                  } else      p_voice2->sym = s2;
                  p_voice2->last_sym = s2;
                  s2->voice = voice;
                  s2->staff = p_voice2->staff;
                  if (p_voice2->second)
                        s2->sflags |= S_SECOND;
                  else  s2->sflags &= ~S_SECOND;
                  if (p_voice2->floating)
                        s2->sflags |= S_FLOATING;
                  else  s2->sflags &= ~S_FLOATING;
                  s2->ly = 0;
                  if (s2->type != GRACE)
                        continue;
                  g = s2->extra;
                  g2 = (struct SYMBOL *) getarena(sizeof *g2);
                  memcpy(g2, g, sizeof *g2);
                  s2->extra = g2;
                  s2 = g2;
                  s2->voice = voice;
                  s2->staff = p_voice2->staff;
                  for (g = g->next; g != 0; g = g->next) {
                        g2 = (struct SYMBOL *) getarena(sizeof *g2);
                        memcpy(g2, g, sizeof *g2);
                        s2->next = g2;
                        g2->prev = s2;
                        s2 = g2;
                        s2->voice = voice;
                        s2->staff = p_voice2->staff;
                  }
            }
      }
}

/* -- create a new staff system -- */
static void system_new(void)
{
      struct SYSTEM *new_sy;
      int staff, voice;

      new_sy = (struct SYSTEM *) getarena(sizeof *new_sy);
      if (parsys == 0) {
            memset(new_sy, 0, sizeof *new_sy);
            for (voice = 0; voice < MAXVOICE; voice++) {
                  new_sy->voice[voice].range = -1;
                  new_sy->voice[voice].clef.line = 2;
                  new_sy->voice[voice].clef.stafflines = 5;
                  new_sy->voice[voice].clef.staffscale = 1;
            }
            cursys = new_sy;
      } else {
            for (voice = 0; voice < MAXVOICE; voice++) {
                  if (parsys->voice[voice].range < 0
                      || parsys->voice[voice].second)
                        continue;
                  staff = parsys->voice[voice].staff;
                  memcpy(&parsys->staff[staff].clef,
                        &parsys->voice[voice].clef,
                        sizeof parsys->staff[staff].clef);
            }
            memcpy(new_sy, parsys, sizeof *new_sy);
            for (voice = 0; voice < MAXVOICE; voice++) {
                  new_sy->voice[voice].range = -1;
                  new_sy->voice[voice].second = 0;
            }
            for (staff = 0; staff < MAXSTAFF; staff++)
                  new_sy->staff[staff].flags = 0;
            parsys->next = new_sy;
      }
      parsys = new_sy;
}

/* -- set the staves -- */
static void staves_init(void)
{
      struct SYSTEM *sy, *new_sy;
      struct SYMBOL *s, *staves;
      int staff, voice;

      sy = cursys;
      for (voice = 0; voice < MAXVOICE; voice++) {
            if (sy->voice[voice].range < 0
                || sy->voice[voice].second)
                  continue;
            staff = sy->voice[voice].staff;
            memcpy(&sy->staff[staff].clef,
                  &sy->voice[voice].clef,
                  sizeof (struct clef_s));
            sy->staff[staff].sep = sy->voice[voice].sep;
            sy->staff[staff].maxsep = sy->voice[voice].maxsep;
      }
      staves = 0;
      for (s = tsfirst; s != 0; s = s->ts_next) {
            switch (s->type) {
            case STAVES:
                  sy = sy->next;
                  for (voice = 0; voice < MAXVOICE; voice++) {
                        if (sy->voice[voice].range < 0
                            || sy->voice[voice].second)
                              continue;
                        staff = sy->voice[voice].staff;
                        memcpy(&sy->staff[staff].clef,
                              &sy->voice[voice].clef,
                              sizeof (struct clef_s));
                        sy->staff[staff].sep = sy->voice[voice].sep;
                        sy->staff[staff].maxsep = sy->voice[voice].maxsep;
                  }
                  staves = s;
                  continue;
            case CLEF:
                  if (s->as.u.clef.type < 0)
                        break;
                  continue;   /* normal clef change */
            case KEYSIG:
            case TIMESIG:
            case TEMPO:
            case PART:
            case FMTCHG:
                  continue;
            default:
                  staves = 0;
                  continue;
            }

            /* #lines or scale of staff found */
            voice = s->voice;
            if (staves == 0) {
                  staves = s; /* create a new staff system */
                  new_sy = (struct SYSTEM *) getarena(sizeof *new_sy);
                  memcpy(new_sy, sy, sizeof *new_sy);
                  new_sy->next = sy->next;
                  sy->next = new_sy;
                  sy = new_sy;
                  s->type = STAVES; /* and set the marker */
            } else {          /* remove the CLEF */
                  if (s->prev != 0)
                        s->prev->next = s->next;
                  else  voice_tb[voice].sym = s->next;
                  if (s->ts_next != 0) {
                        s->ts_next->ts_prev = s->ts_prev;
                        if (s->sflags & S_SEQST)
                              s->ts_next->sflags |= S_SEQST;
                  }
                  if (s->ts_prev != 0)
                        s->ts_prev->ts_next = s->ts_next;
                  else  tsfirst = s->ts_next;
                  if (s->next != 0)
                        s->next->prev = s->prev;
            }
            staff = sy->voice[voice].staff;
            if (s->as.u.clef.stafflines >= 0)
                  sy->voice[voice].clef.stafflines
                        = sy->staff[staff].clef.stafflines
                        = s->as.u.clef.stafflines;
            if (s->as.u.clef.staffscale != 0)
                  sy->voice[voice].clef.staffscale
                        = sy->staff[staff].clef.staffscale
                        = s->as.u.clef.staffscale;
      }
}

/* -- initialize the voices and staves -- */
/* this routine is called starting the generation */
static void system_init(void)
{
      voice_compress();
      voice_dup();
      sort_all();       /* define the time / vertical sequences */
      parsys->nstaff = nstaff;      /* save the number of staves */
      staves_init();
}

/* -- generate a piece of tune -- */
static void generate(void)
{
      int voice;

      system_init();
      if (tsfirst == 0)
            return;                 /* no symbol */
      output_music();

      /* reset the parser */
      for (voice = 0; voice < MAXVOICE; voice++) {
            voice_tb[voice].sym = voice_tb[voice].last_sym = 0;
            voice_tb[voice].time = 0;
            voice_tb[voice].have_ly = 0;
            voice_tb[voice].staff = cursys->voice[voice].staff;
            voice_tb[voice].second = cursys->voice[voice].second;
      }
      if (staves_found > 0)
            staves_found = 0;
}

/* -- output the music and lyrics after tune -- */
static void gen_ly(int eob)
{
      generate();
      if (info['W' - 'A'] != 0) {
            put_words(info['W' - 'A']);
            info['W' - 'A'] = 0;
      }
      if (eob)
            buffer_eob();
}

/* -- change the accidentals and "\\n" in the guitar chords -- */
static void gchord_adjust(struct SYMBOL *s)
{
      char *p, *q;
      int annot, l;

      s->gcf = cfmt.gcf;
      s->anf = cfmt.anf;
      annot = cfmt.freegchord;
      p = s->as.text;
      if (*p == '\0')
            return;
      if (strchr("^_<>@", *p) != 0) {
            annot = 1;        /* annotation */
            p++;
      }
      q = p;
/*fixme: treat 'dim' as 'o', 'halfdim' as '/o', and 'maj' as a triangle*/
      while (*p != '\0') {
            switch (*p) {
            case '#':
            case 'b':
            case '=':
                  if (annot)
                        break;
                  if (p == q) /* 1st char or after a slash */
                        break;
                  switch (*p) {
                  case '#':
                        *p = '\201';
                        break;
                  case 'b':
                        *p = '\202';
                        break;
                  default:
/*                case '=': */
                        *p = '\203';
                        break;
                  }
                  break;
            case '\\':
                  p++;
                  switch (*p) {
                  case '\0':
                        return;
                  case 'n':
                        p[-1] = ';';
                        goto move;
                  case '#':
                        p[-1] = '\201';
                        goto move;
                  case 'b':
                        p[-1] = '\202';
                        goto move;
                  case '=':
                        p[-1] = '\203';
                  move:
                        l = strlen(p);
                        memmove(p, p + 1, l);
                        p--;
                        break;
                  }
                  break;
            case ' ':
                  if (p != q)
                        break;
                  /* fall thru */
            case '/':
                  q = p + 1;
                  break;
            case ';':
                  if (p[-1] == '\\' || p[1] == '\0')
                        break;
                  /* fall thru */
            case '\n':
                  if (p[1] != '\0' && strchr("^_<>@", p[1]) != 0) {
                        annot = 1;
                        p++;
                  } else      annot = cfmt.freegchord;
                  break;
            }
            p++;
      }
}

/* -- parse a lyric (vocal) definition -- */
static char *get_lyric(char *p)
{
      struct SYMBOL *s;
      char word[128], *q;
      int ln;
      struct FONTSPEC *f;

      f = &cfmt.font_tb[cfmt.vof];
      str_font(cfmt.vof);                 /* (for tex_str) */

      if ((s = lyric_cont) == 0) {
            if (lyric_nb >= MAXLY)
                  return "Too many lyric lines";
            ln = lyric_nb++;
            s = lyric_start;
      } else      {
            lyric_cont = 0;
            ln = lyric_nb - 1;
      }

      /* scan the lyric line */
      while (*p != '\0') {
            while (isspace((unsigned char) *p))
                  p++;
            if (*p == '\0')
                  break;
            switch (*p) {
            case '|':
                  while (s != 0
                         && (s->type != BAR
                           || (s->as.flags & ABC_F_INVIS)))
                        s = s->next;
                  if (s == 0)
                        return "Not enough bar lines for lyric line";
                  s = s->next;
                  p++;
                  continue;
            case '-':
                  word[0] = '\x02';
                  word[1] = '\0';
                  p++;
                  break;
            case '_':
                  word[0] = '\x03';
                  word[1] = '\0';
                  p++;
                  break;
            case '*':
                  word[0] = *p++;
                  word[1] = '\0';
                  break;
            case '\\':
                  if (p[1] == '\0') {
                        lyric_cont = s;
                        return 0;
                  }
                  /* fall thru */
            default:
                  q = word;
                  for (;;) {
                        unsigned char c;

                        c = *p;
                        switch (c) {
                        case '\0':
                        case ' ':
                        case '\t':
                        case '_':
                        case '*':
                        case '|':
                              break;
                        case '~':
                              c = ' ';
                              goto addch;
                        case '-':
                              c = '\x02';
                              goto addch;
                        case '\\':
                              if (p[1] == '\0')
                                    break;
                              switch (p[1]) {
                              case '~':
                              case '_':
                              case '*':
                              case '|':
                              case '-':
                              case ' ':
                                    c = *++p;
                                    break;
                              }
                              /* fall thru */
                        default:
                        addch:
                              if (q < &word[sizeof word - 1])
                                    *q++ = c;
                              p++;
                              if (c == '\x02')
                                    break;
                              continue;
                        }
                        break;
                  }
                  *q = '\0';
                  break;
            }

            /* store word in next note */
            while (s != 0 && s->as.type != ABC_T_NOTE)
                  s = s->next;
            if (s == 0)
                  return "Too many words in lyric line";
            if (word[0] != '*') {
                  struct lyl *lyl;
                  float w;

                  if (s->ly == 0) {
                        s->ly = (struct lyrics *) getarena(sizeof (struct lyrics));
                        memset(s->ly, 0, sizeof (struct lyrics));
                  }
                  w = tex_str(word);

                  /* handle the font change at start of text */
                  q = tex_buf;
                  if (*q == '$' && isdigit((unsigned char) q[1])
                      && (unsigned) (q[1] - '0') < FONT_UMAX) {
                        int ft;

                        ft = q[1] - '0';
                        if (ft == 0)
                              ft = cfmt.vof;
                        f = &cfmt.font_tb[ft];
                        str_font(ft);
                        q += 2;
                  }
                  lyl = (struct lyl *) getarena(sizeof *s->ly->lyl[0]
                                        + strlen(q));
                  s->ly->lyl[ln] = lyl;
                  lyl->f = f;
                  lyl->w = w;
                  strcpy(lyl->t, q);

            }
            s = s->next;
      }
      while (s != 0 && s->as.type != ABC_T_NOTE)
            s = s->next;
      if (s != 0)
            return "Not enough words for lyric line";
      return 0;
}

/* -- add a voice in the linked list -- */
static void voice_link(struct VOICE_S *p_voice)
{
      struct VOICE_S *p_voice2;

      p_voice2 = first_voice;
      for (;;) {
            if (p_voice2 == p_voice)
                  return;
            if (p_voice2->next == 0)
                  break;
            p_voice2 = p_voice2->next;
      }
      p_voice2->next = p_voice;
}

/* -- get a voice overlay -- */
static void get_over(struct SYMBOL *s)
{
      struct VOICE_S *p_voice, *p_voice2, *p_voice3;
      int range, voice, voice2, voice3;
static char tx_wrong_dur[] = "Wrong duration in voice overlay";

      /* treat the end of overlay */
      p_voice = curvoice;
      if (s->as.type == ABC_T_BAR
          || s->as.u.v_over.type == V_OVER_E)  {
            over_bar = 0;
            if (over_time < 0) {
                  error(1, s,
                        "Erroneous end of voice overlap");
                  return;
            }
            if (p_voice->time != over_mxtime)
                  error(1, s, tx_wrong_dur);
            curvoice = &voice_tb[over_voice];
            over_voice = -1;
            over_time = -1;
            return;
      }

      /* treat the full overlay start */
      if (s->as.u.v_over.type == V_OVER_S) {
            over_time = p_voice->time;
            return;
      }

      /* (here is treated a new overlay - '&') */
      /* create the extra voice if not done yet */
      voice2 = s->as.u.v_over.voice;
      p_voice2 = &voice_tb[voice2];
      if (parsys->voice[voice2].range < 0) {
            int clone;

            clone = p_voice->clone >= 0;
            p_voice2->name = "&";
            p_voice2->second = 1;
            parsys->voice[voice2].second = 1;
            p_voice2->scale = p_voice->scale;
            range = parsys->voice[p_voice - voice_tb].range;
            for (voice = 0; voice < MAXVOICE; voice++) {
                  if (parsys->voice[voice].range > range)
                        parsys->voice[voice].range += clone + 1;
            }
            parsys->voice[voice2].range = range + 1;
            voice_link(p_voice2);
            if (clone) {
                  for (voice3 = MAXVOICE; --voice3 >= 0; ) {
                        if (parsys->voice[voice3].range < 0)
                              break;
                  }
                  if (voice3 > 0) {
                        p_voice3 = &voice_tb[voice3];
                        p_voice3->name = p_voice2->name;
                        p_voice3->second = 1;
                        parsys->voice[voice3].second = 1;
                        p_voice3->scale = voice_tb[p_voice->clone].scale;
                        parsys->voice[voice3].range = range + 2;
                        voice_link(p_voice3);
                        p_voice2->clone = voice3;
                  } else      error(1, s,
                              "Too many voices for overlay cloning");
            }
      }
      voice = p_voice - voice_tb;
      p_voice2->cstaff = p_voice2->staff = parsys->voice[voice2].staff
                  = parsys->voice[voice].staff;
      if ((voice3 = p_voice2->clone) >= 0) {
            p_voice3 = &voice_tb[voice3];
            p_voice3->cstaff = p_voice3->staff
                        = parsys->voice[voice3].staff
                        = parsys->voice[p_voice->clone].staff;
      }

      if (over_time < 0) {                /* first '&' in a measure */
            int time;

            over_bar = 1;
            over_mxtime = p_voice->time;
            over_voice = p_voice - voice_tb;
            time = p_voice2->time;
            for (s = p_voice->last_sym; /*s != 0*/; s = s->prev) {
                  if (s->type == BAR
                      || s->time <= time) /* (if start of tune) */
                        break;
            }
            over_time = s->time;
      } else {
            if (over_voice < 0) {
                  over_mxtime = p_voice->time;
                  over_voice = p_voice - voice_tb;
            } else if (p_voice->time != over_mxtime)
                  error(1, s, tx_wrong_dur);
      }
      p_voice2->time = over_time;
      curvoice = p_voice2;
}

/* -- get staves definition (%%staves) -- */
static void get_staves(struct SYMBOL *s)
{
      struct VOICE_S *p_voice, *p_voice2;
      struct staff_s *p_staff;
      int i, flags, voice, staff, range, dup_voice, maxtime;

      voice_compress();
      voice_dup();

      /* create a new staff system */
      curvoice = p_voice = first_voice;
      maxtime = p_voice->time;
      flags = p_voice->sym != 0;
      for (p_voice = p_voice->next; p_voice; p_voice = p_voice->next) {
            if (p_voice->time > maxtime)
                  maxtime = p_voice->time;
            if (p_voice->sym != 0)
                  flags = 1;
      }
      for (voice = 0, p_voice = voice_tb;
           voice < MAXVOICE;
           voice++, p_voice++) {
            p_voice->second = 0;
            p_voice->floating = 0;
            p_voice->ignore = 0;
            p_voice->time = maxtime;
      }
      if (flags == 0                      /* if first %%staves */
          || (maxtime == 0 && staves_found < 0)) {
            for (voice = 0; voice < MAXVOICE; voice++)
                  parsys->voice[voice].range = -1;
      } else {                      /* else, have a new staff system */
            parsys->nstaff = nstaff;
            sym_link(s, STAVES);
            s->as.state = ABC_S_HEAD;     /* (output PS sequences immediately) */
            system_new();
      }
      staves_found = maxtime;

      /* initialize the voices */
      dup_voice = MAXVOICE;
      range = 0;
      for (i = 0, p_staff = s->as.u.staves;
           i < MAXVOICE && p_staff->voice >= 0;
           i++, p_staff++) {
            voice = p_staff->voice;
            p_voice = &voice_tb[voice];
            if (parsys->voice[voice].range >= 0) {
                  if (parsys->voice[dup_voice - 1].range >= 0) {
                        error(1, s, "Too many voices for cloning");
                        continue;
                  }
                  voice = --dup_voice;    /* duplicate the voice */
                  p_voice2 = &voice_tb[voice];
                  memcpy(p_voice2, p_voice, sizeof *p_voice2);
                  p_voice2->next = 0;
                  while (p_voice->clone > 0)
                        p_voice = &voice_tb[p_voice->clone];
                  p_voice->clone = voice;
                  p_voice = p_voice2;
                  p_staff->voice = voice;
            }
            parsys->voice[voice].range = range++;
            voice_link(p_voice);
      }

      /* change the behavior from %%staves to %%score */
      if (s->as.text[3] == 't') {         /* if %%staves */
            for (i = 0, p_staff = s->as.u.staves;
                 i < MAXVOICE - 2 && p_staff->voice >= 0;
                 i++, p_staff++) {
                  flags = p_staff->flags;
                  if (!(flags & (OPEN_BRACE | OPEN_BRACE2)))
                        continue;
                  if (p_staff[1].flags != 0)
                        continue;
                  if ((flags & OPEN_PARENTH)
                      || (p_staff[2].flags & OPEN_PARENTH))
                        continue;

                  /* {a b c} --> {a *b c} */
                  if (p_staff[2].flags & (CLOSE_BRACE | CLOSE_BRACE2))
                        p_staff[1].flags |= FL_VOICE;

                  /* {a b c d} --> {(a b) (c d)} */
                  else if (p_staff[2].flags == 0
                         && (p_staff[3].flags & (CLOSE_BRACE | CLOSE_BRACE2))) {
                        p_staff->flags |= OPEN_PARENTH;
                        p_staff[1].flags |= CLOSE_PARENTH;
                        p_staff[2].flags |= OPEN_PARENTH;
                        p_staff[3].flags |= CLOSE_PARENTH;
                  }
            }
      }

      /* set the staff system */
      staff = -1;
      for (i = 0, p_staff = s->as.u.staves;
           i < MAXVOICE && p_staff->voice >= 0;
           i++, p_staff++) {
            flags = p_staff->flags;
            if ((flags & (OPEN_PARENTH | CLOSE_PARENTH))
                        == (OPEN_PARENTH | CLOSE_PARENTH)) {
                  flags &= ~(OPEN_PARENTH | CLOSE_PARENTH);
                  p_staff->flags = flags;
            }
            voice = p_staff->voice;
            p_voice = &voice_tb[voice];
            if (flags & FL_VOICE) {
                  p_voice->floating = 1;
                  p_voice->second = 1;
                  parsys->voice[voice].second = 1;
            } else {
#if MAXSTAFF < MAXVOICE
                  if (staff >= MAXSTAFF - 1) {
                        error(1, s, "Too many staves");
                  } else
#endif
                        staff++;
                  parsys->staff[staff].flags = 0;
            }
            p_voice->staff = p_voice->cstaff
                  = parsys->voice[voice].staff = staff;
            parsys->staff[staff].flags |= flags;
            if (flags & OPEN_PARENTH) {
                  while (i < MAXVOICE) {
                        i++;
                        p_staff++;
                        voice = p_staff->voice;
                        p_voice = &voice_tb[voice];
                        p_voice->second = 1;
                        parsys->voice[voice].second = 1;
                        p_voice->staff = p_voice->cstaff
                              = parsys->voice[voice].staff
                              = staff;
                        if (p_staff->flags & CLOSE_PARENTH)
                              break;
                  }
                  parsys->staff[staff].flags |= p_staff->flags;
            }
      }
      if (staff < 0)
            staff = 0;
      nstaff = staff;
}

/* -- re-initialize all potential voices -- */
static void voice_init(void)
{
      struct VOICE_S *p_voice;
      int i;

      for (i = 0, p_voice = voice_tb;
           i < MAXVOICE;
           i++, p_voice++) {
            p_voice->sym = p_voice->last_sym = 0;
            p_voice->bar_start = 0;
            p_voice->time = 0;
            p_voice->slur_st = 0;
            p_voice->hy_st = 0;
            p_voice->tie = 0;
            p_voice->rtie = 0;
      }
}

/* -- identify info line, store in proper place -- */
static char *state_txt[4] = {
      "global", "header", "tune", "embedded"
};
static void get_info(struct SYMBOL *s,
                 int info_type,
                 struct abctune *t)
{
      INFO *inf;
      char *p;
      int old_lvl;

      /* change global or local */
      inf = s->as.state == ABC_S_GLOBAL ? &default_info : &info;
      old_lvl = lvlarena(s->as.state != ABC_S_GLOBAL);

      switch (info_type) {
      case 'd':
            break;
      case 'I':
            process_pscomment(&s->as);    /* same as pseudo-comment */
            break;
      case 'K':
            get_key(s);
            if (s->as.state != ABC_S_HEAD)
                  break;
            tunenum++;
            PUT2("%% --- %s (%s) ---\n"
                  "%% --- font ",
                  &info['X' - 'A']->as.text[2],
                  &info['T' - 'A']->as.text[2]);
            outft = -1;
            set_font(TITLEFONT);          /* for index */
            outft = -1;
            PUT0("\n");
            if (!epsf)
                  bskip(cfmt.topspace);
            write_heading(t);
            if (!cfmt.printtempo)
                  info['Q' - 'A'] = 0;
            nbar = nbar_rep = cfmt.measurefirst;      /* measure numbering */
            over_voice = -1;
            over_time = -1;
            over_bar = 0;
            reset_gen();
            curvoice = first_voice;       /* switch to the 1st voice */
            break;
      case 'L':
            break;
      case 'M':
            get_meter(s);
            break;
      case 'P':
            if (!cfmt.printparts)
                  break;
            switch (s->as.state) {
            case ABC_S_GLOBAL:
            case ABC_S_HEAD:
                  (*inf)['P' - 'A'] = s;
                  break;
            case ABC_S_TUNE: {
                  struct VOICE_S *p_voice;

                  p_voice = curvoice;
                  curvoice = first_voice;
                  sym_link(s, PART);
                  if (p_voice->time != curvoice->time) {
                        error(1, s, "Misplaced P:");
                        if (p_voice->time > curvoice->time)
                              s->time = curvoice->time = p_voice->time;
                        else  p_voice->time = curvoice->time;
                  }
                  curvoice = p_voice;
                  break;
                }
            default:
                  sym_link(s, PART);
                  break;
            }
            break;
      case 'Q':
            if (curvoice != first_voice)  /* tempo only for first voice */
                  break;
            switch (s->as.state) {
            case ABC_S_GLOBAL:
            case ABC_S_HEAD:
                  (*inf)['Q' - 'A'] = s;
                  break;
            default:
                  if (cfmt.printtempo)
                        sym_link(s, TEMPO);
                  break;
            }
            break;
      case 's':
            break;
      case 'T':
            switch (s->as.state) {
            case ABC_S_GLOBAL:      /* T: without X: */
                  goto newtune;
            case ABC_S_HEAD:
                  goto addinfo;
            default:
                  gen_ly(1);
                  write_title(s);
                  bskip(cfmt.musicspace + 0.2 CM);
                  voice_init();
                  reset_gen();            /* (display the time signature) */
                  curvoice = first_voice;
                  break;
            }
            break;
      case 'U': {
            unsigned char *deco;

            deco = s->as.state == ABC_S_GLOBAL ? deco_glob : deco_tune;
            deco[s->as.u.user.symbol] = deco_intern(s->as.u.user.value);
            break;
          }
      case 'u':
            break;
      case 'V':
            get_voice(s);
            break;
      case 'w':
            if (cfmt.musiconly
                || s->as.state != ABC_S_TUNE)
                  break;
            if (lyric_start == 0)
                  break;
            p = &s->as.text[2];
            while (isspace((unsigned char) *p))
                   p++;
            if ((p = get_lyric(p)) != 0)
                  error(1, s, "%s", p);
            curvoice->have_ly = 1;
            break;
      case 'W':
            if (s->as.state == ABC_S_GLOBAL)
                  break;
            goto addinfo;
      case 'X':
newtune:
            if (!epsf)
                  write_buffer();   /* flush stuff left from %% lines */
            dfmt = cfmt;            /* save the format at start of tune */
            memcpy(&info, &default_info, sizeof info);
            info['X' - 'A'] = s;
            if (info_type == 'T')
                  info['T' - 'A'] = s;
            memcpy(&deco_tune, &deco_glob, sizeof deco_tune);
            break;
      default:
addinfo:
            if (info_type >= 'A' && info_type <= 'Z') {
                  struct SYMBOL *prev;

                  prev = (*inf)[info_type - 'A'];
                  if (prev == 0
                      || (prev->as.state == ABC_S_GLOBAL
                        && s->as.state != ABC_S_GLOBAL)) {
                        (*inf)[info_type - 'A'] = s;
                        break;
                  }
                  while (prev->next != 0)
                        prev = prev->next;
                  prev->next = s;
                  s->prev = prev;
                  break;
            }
            error(1, s, "%s info '%c:' not treated",
                  state_txt[(int) s->as.state], info_type);
            break;
      }
      lvlarena(old_lvl);
}

/* -- set head type, dots, flags for note -- */
void identify_note(struct SYMBOL *s,
               int dur,
               int *p_head,
               int *p_dots,
               int *p_flags)
{
      int head, dots, flags;

      if (dur % 12 != 0)
            error(1, s, "Invalid note duration");
      dur /= 12;              /* see BASE_LEN for values */
      if (dur == 0)
            error(1, s, "Note too short");
      for (flags = 5; dur != 0; dur >>= 1, flags--) {
            if (dur & 1)
                  break;
      }
      dur >>= 1;
      switch (dur) {
      case 0: dots = 0; break;
      case 1: dots = 1; break;
      case 3: dots = 2; break;
      case 7: dots = 3; break;
      default:
            error(1, s, "Note too much dotted");
            dots = 3;
            break;
      }
      flags -= dots;
      if (flags >= 0)
            head = H_FULL;
      else switch (flags) {
      default:
            error(1, s, "Note too long");
            flags = -4;
            /* fall thru */
      case -4:
            head = H_SQUARE;
            break;
      case -3:
            head = cfmt.squarebreve ? H_SQUARE : H_OVAL;
            break;
      case -2:
            head = H_OVAL;
            break;
      case -1:
            head = H_EMPTY;
            break;
      }
      *p_head = head;
      *p_flags = flags;
      *p_dots = dots;
}

/* -- measure bar -- */
static void get_bar(struct SYMBOL *s)
{
      int bar_type;
      struct SYMBOL *s2, *s3;

      if (curvoice->norepbra && s->as.u.bar.repeat_bar)
            s->sflags |= S_NOREPBRA;

      bar_type = s->as.u.bar.type;
      s3 = 0;
      s2 = curvoice->last_sym;
      if (s2 != 0) {

            /* remove the invisible repeat bars when no shift is needed */
            if (bar_type == B_OBRA
                && (curvoice == first_voice
                  || (parsys->staff[curvoice->staff - 1].flags & STOP_BAR)
                  || (s->sflags & S_NOREPBRA))) {
                  if (s2->type == BAR && s2->as.text == 0) {
                        s2->as.text = s->as.text;
                        s2->as.u.bar.repeat_bar = s->as.u.bar.repeat_bar;
                        s2->sflags |= (s->sflags & S_NOREPBRA);
                        return;
                  }
            }

            /* merge back-to-back repeat bars */
            if (bar_type == B_LREP && s->as.text == 0) {
                  if (s2->type == BAR
                      && s2->as.u.bar.type == B_RREP) {
                        s2->as.u.bar.type = B_DREP;
                        return;
                  }
            }

            /* the bar must be before any key signature */
/*fixme:and time signature??*/
            if ((s2->type == KEYSIG /*|| s2->type == TIMESIG*/)
                && (s2->prev == 0 || s2->prev->type != BAR))
                  s3 = s2;
      }

      /* link the bar in the voice */
      if (s3 != 0) {
            s2 = curvoice->last_sym;
            curvoice->last_sym = s3->prev;
            sym_link(s, BAR);
            s->next = s3;
            s3->prev = s;
            curvoice->last_sym = s2;
      } else      sym_link(s, BAR);
      s->staff = curvoice->staff;   /* original staff */

      /* set some flags */
      switch (bar_type) {
      case B_OBRA:
      case B_CBRA:
      case (B_OBRA << 4) + B_CBRA:
            s->as.flags |= ABC_F_INVIS;
            break;
      }
      if ((bar_type & 0xf0) != 0) {
            do {
                  bar_type >>= 4;
            } while ((bar_type & 0xf0) != 0);
            if (bar_type == B_COL)
                  s->sflags |= S_RRBAR;
      }
      if (bar_number != 0
          && curvoice == first_voice) {
            s->u = bar_number;            /* set the new bar number */
            bar_number = 0;
      }
      if (s->as.u.bar.dc.n > 0)
            deco_cnv(&s->as.u.bar.dc, s, 0); /* convert the decorations */
      if (s->as.text != 0 && !s->as.u.bar.repeat_bar)
            gchord_adjust(s);       /* adjust the guitar chords */
}

/* -- activate the tablature from the command line '-T' -- */
static void set_tblt(struct VOICE_S *p_voice)
{
      struct tblt_s *tblt;
      int i;

      for (i = 0; i < ncmdtblt; i++) {
            if (!cmdtblts[i].active)
                  continue;
            if (cmdtblts[i].vn[0] != '\0') {
                  if (strcmp(cmdtblts[i].vn, p_voice->name) != 0
                      && (p_voice->nm == 0
                        || strcmp(cmdtblts[i].vn, p_voice->nm) != 0)
                      && (p_voice->snm == 0
                        || strcmp(cmdtblts[i].vn, p_voice->snm) != 0))
                        continue;
            }
            tblt = tblts[cmdtblts[i].index];
            if (p_voice->tblts[0] == tblt
                || p_voice->tblts[1] == tblt)
                  continue;
            if (p_voice->tblts[0] == 0)
                  p_voice->tblts[0] = tblt;
            else  p_voice->tblts[1] = tblt;
      }
}

/* -- do a tune -- */
void do_tune(struct abctune *t,
           int header_only)
{
      struct abcsym *as;
      struct SYMBOL *s, *s2;
      int i;

      /* initialize */
      nstaff = 0;
      staves_found = -1;
      memset(staff_tb, 0, sizeof staff_tb);
      memset(voice_tb, 0, sizeof voice_tb);
      for (i = 0; i < MAXVOICE; i++) {
            voice_tb[i].clef.line = 2;    /* treble clef on 2nd line */
            voice_tb[i].clef.stafflines = 5;
            voice_tb[i].clef.staffscale = 1;
            voice_tb[i].meter.nmeter = 1;
            voice_tb[i].meter.wmeasure = BASE_LEN;
            voice_tb[i].meter.meter[0].top[0] = '4';
            voice_tb[i].meter.meter[0].bot[0] = '4';
            voice_tb[i].wmeasure = BASE_LEN;
            voice_tb[i].scale = 1;
            voice_tb[i].clone = -1;
      }
      curvoice = first_voice = voice_tb;
      voice_tb[0].name = "1";       /* implicit voice */
      set_tblt(first_voice);
      micro_tb = t->micro_tb;       /* microtone values */

      parsys = 0;
      system_new();                 /* create the 1st staff system */
      parsys->voice[0].range = 0;   /* implicit voice */

      if (cfmt.oneperpage) {
            use_buffer = 0;
            close_page();
      } else      use_buffer = !cfmt.splittune;

      /* set the duration of all notes/rests - this is needed for tuplets */
      if (!header_only) {
            for (as = t->first_sym; as != 0; as = as->next) {
                  switch (as->type) {
                  case ABC_T_EOLN:
                        if (as->u.eoln.type == 2)
                              abc2win = 1;
                        break;
                  case ABC_T_NOTE:
                  case ABC_T_REST:
                        s = (struct SYMBOL *) as;
                        s->dur = s->as.u.note.lens[0];
                        break;
                  }
            }
      }

      /* scan the tune */
      for (as = t->first_sym; as != 0; as = as->next) {
            if (header_only && as->state != ABC_S_GLOBAL)
                  break;
            s = (struct SYMBOL *) as;
            switch (as->type) {
            case ABC_T_INFO: {
                  int info_type;

                  switch (as->text[0]) {
                  case 'X':
                  case 'T':
                  case 'W':
                        if (header_only)
                              continue;
                  }
                  info_type = as->text[0];
                  for (;;) {
                        get_info(s, info_type, t);
                        if (as->next == 0
                            || as->next->type != ABC_T_INFO2)
                              break;
                        as = as->next;
                        s = (struct SYMBOL *) as;
                  }
                  break;
                }
            case ABC_T_PSCOM:
                  as = process_pscomment(as);
                  break;
            case ABC_T_NOTE:
            case ABC_T_REST:
                  if (curvoice->space) {
                        curvoice->space = 0;
                        s->as.flags |= ABC_F_SPACE;
                  }
                  get_note(s);
                  break;
            case ABC_T_BAR:
                  if (over_bar)
                        get_over(s);
                  get_bar(s);
                  break;
            case ABC_T_CLEF:
                  get_clef(s);
                  break;
            case ABC_T_EOLN:
                  if (cfmt.breakoneoln
                      || (s->as.flags & ABC_F_SPACE))
                        curvoice->space = 1;
                  if (curvoice->second)
                        continue;
                  if (cfmt.continueall || cfmt.barsperstaff
                      || as->u.eoln.type == 1)  /* if '\' */
                        continue;
                  if (as->u.eoln.type == 0      /* if normal eoln */
                      && abc2win)
                        continue;
                  if (curvoice->last_sym != 0)
                        curvoice->last_sym->sflags |= S_EOLN;
                  if (!cfmt.alignbars)
                        continue;
                  i = (curvoice - voice_tb) + 1;
                  if (i < cfmt.alignbars) {
                        curvoice = &voice_tb[i];
                        continue;
                  }
                  gen_ly(1);
                  curvoice = &voice_tb[0];
                  continue;
            case ABC_T_MREST: {
                  int dur;

                  dur = curvoice->wmeasure * as->u.bar.len;
                  if (curvoice->second) {
                        curvoice->time += dur;
                        break;
                  }
                  s->dur = dur;
                  sym_link(s, MREST);
                  if (s->as.text != 0)          /* adjust the */
                        gchord_adjust(s); /* guitar chords */
                  if (s->as.u.bar.dc.n > 0)
                        deco_cnv(&s->as.u.bar.dc, s, 0);
                  break;
                }
            case ABC_T_MREP: {
                  int n;

                  if (as->next == 0 || as->next->type != ABC_T_BAR) {
                        error(1, s,
                              "Measure repeat not followed by a bar");
                        break;
                  }
                  if (curvoice->ignore)
                        break;
                  if (curvoice->second) {
                        curvoice->time += curvoice->wmeasure * n;
                        break;
                  }
                  s2 = sym_add(curvoice, NOTEREST);
                  s2->as.type = ABC_T_REST;
                  s2->as.linenum = as->linenum;
                  s2->as.colnum = as->colnum;
                  s2->as.flags |= ABC_F_INVIS;
                  s2->dur = curvoice->wmeasure;
                  curvoice->time += s2->dur;
                  n = as->u.bar.len;
                  if (n == 1) {
                        as->next->u.bar.len = n; /* <n> in the next bar */
                        break;
                  }
                  while (--n > 0) {
                        s2 = sym_add(curvoice, BAR);
                        s2->as.linenum = as->linenum;
                        s2->as.colnum = as->colnum;
                        s2->as.u.bar.type = B_SINGLE;
                        if (n == as->u.bar.len - 1)
                              s2->as.u.bar.len = as->u.bar.len;
                        s2 = sym_add(curvoice, NOTEREST);
                        s2->as.type = ABC_T_REST;
                        s2->as.linenum = as->linenum;
                        s2->as.colnum = as->colnum;
                        s2->as.flags |= ABC_F_INVIS;
                        s2->dur = curvoice->wmeasure;
                        curvoice->time += s2->dur;
                  }
                  break;
                }
            case ABC_T_V_OVER:
                  get_over(s);
                  continue;
            case ABC_T_TUPLET:
                  set_tuplet(s);
                  break;
            default:
                  continue;
            }
            if (s->type == 0)
                  continue;
            if (curvoice->second)
                  s->sflags |= S_SECOND;
            if (curvoice->floating)
                  s->sflags |= S_FLOATING;
      }

      gen_ly(0);
      if (!header_only
          && cfmt.writehistory)
            put_history();
      buffer_eob();
      if (epsf) {
            if (nbuf > 0)
                  write_eps();
      } else      write_buffer();

      if (info['X' - 'A'] != 0) {
            cfmt = dfmt;      /* restore the format at start of tune */
            info['X' - 'A'] = 0;
      }
}

/* -- get a clef definition (in K: or V:) -- */
static void get_clef(struct SYMBOL *s)
{
      struct VOICE_S *p_voice;
      struct SYMBOL *s2;
      int stafflines, voice;
      float staffscale;

      p_voice = curvoice;
      if (s->as.prev->type == ABC_T_INFO) {
            switch (s->as.prev->text[0]) {
            case 'K':
                  if (s->as.prev->state != ABC_S_HEAD)
                        break;
                  if (s->as.u.clef.type >= 0) {
                        for (voice = 0; voice < MAXVOICE; voice++) {
                              stafflines = parsys->voice[voice].clef.stafflines;
                              staffscale = parsys->voice[voice].clef.staffscale;
                              memcpy(&parsys->voice[voice].clef, &s->as.u.clef,
                                     sizeof parsys->voice[voice].clef);
                              parsys->voice[voice].clef.stafflines = stafflines;
                              parsys->voice[voice].clef.staffscale = staffscale;
                              voice_tb[voice].forced_clef = 1;
                        }
                  }
                  if ((stafflines = s->as.u.clef.stafflines) >= 0) {
                        for (voice = 0; voice < MAXVOICE; voice++)
                              parsys->voice[voice].clef.stafflines = stafflines;
                  }
                  if ((staffscale = s->as.u.clef.staffscale) != 0) {
                        for (voice = 0; voice < MAXVOICE; voice++)
                              parsys->voice[voice].clef.staffscale = staffscale;
                  }
                  return;
            case 'V':   /* clef relative to a voice definition (in the header) */
                  p_voice = &voice_tb[(int) s->as.prev->u.voice.voice];
                  break;
            }
      }
      voice = p_voice - voice_tb;

      if (p_voice->last_sym == 0) {       /* first clef */
            if ((stafflines = s->as.u.clef.stafflines) < 0)
                  stafflines = parsys->voice[voice].clef.stafflines;
            if ((staffscale = s->as.u.clef.staffscale) == 0)
                  staffscale = parsys->voice[voice].clef.staffscale;
            if (s->as.u.clef.type >= 0) {
                  memcpy(&parsys->voice[voice].clef,
                         &s->as.u.clef,
                         sizeof parsys->voice[voice].clef);
            }
            parsys->voice[voice].clef.stafflines = stafflines;
            parsys->voice[voice].clef.staffscale = staffscale;
      } else {                      /* clef change */
            if (s->as.u.clef.type < 0) {  /* if stafflines or staffscale only */
                  sym_link(s, CLEF);      /* (will be changed to STAVES) */
                  return;
            }

            /* the clef must appear before a key signature or a bar */
            s2 = curvoice->last_sym;
            if (s2 != 0 && (s2->type == KEYSIG || s2->type == BAR)) {
                  struct SYMBOL *s3;

                  for (s3 = s2; s3->prev != 0; s3 = s3->prev) {
                        switch (s3->prev->type) {
                        case KEYSIG:
                        case BAR:
                              continue;
                        }
                        break;
                  }
                  curvoice->last_sym = s3->prev;
                  sym_link(s, CLEF);
                  s->next = s3;
                  s3->prev = s;
                  curvoice->last_sym = s2;
            } else      sym_link(s, CLEF);
            s->u = 1;   /* small clef */
            if (s->as.u.clef.stafflines >= 0
                || s->as.u.clef.staffscale != 0) {
                  s2 = sym_add(curvoice, CLEF);
                  s2->as.linenum = s->as.linenum;
                  s2->as.colnum = s->as.colnum;
                  s2->as.u.clef.type = -1;
                  s2->as.u.clef.stafflines = s->as.u.clef.stafflines;
                  s2->as.u.clef.staffscale = s->as.u.clef.staffscale;
            }
      }
      if (s->as.u.clef.type >= 0)
            p_voice->forced_clef = 1;           /* don't change */
}

/* -- get a key signature definition (K:) -- */
static void get_key(struct SYMBOL *s)
{
      struct VOICE_S *p_voice;
      struct SYMBOL *s2;
      int i;

      if (s->as.u.key.empty == 1)
            return;                       /* clef only */
      switch (s->as.state) {
      case ABC_S_HEAD:
            for (i = MAXVOICE, p_voice = voice_tb;
                 --i >= 0;
                 p_voice++) {
                  memcpy(&p_voice->key, &s->as.u.key, sizeof p_voice->key);
                  p_voice->sfp = s->as.u.key.sf;
                  if (p_voice->key.bagpipe
                      && p_voice->stem == 0)
                        p_voice->stem = -1;
            }
            break;
      case ABC_S_TUNE:
      case ABC_S_EMBED:
            if (curvoice->last_sym == 0) {

                  /* if first symbol of the first voice, apply to all voices */
                  if (curvoice == first_voice
                      && s->as.state == ABC_S_TUNE) { /* (not embedded) */
                        for (i = MAXVOICE, p_voice = voice_tb;
                             --i >= 0;
                             p_voice++) {
                              memcpy(&p_voice->key, &s->as.u.key,
                                     sizeof p_voice->key);
                              p_voice->sfp = s->as.u.key.sf;
                              if (p_voice->key.bagpipe
                                  && p_voice->stem == 0)
                                    p_voice->stem = -1;
                        }
                  } else {
                        memcpy(&curvoice->key, &s->as.u.key,
                               sizeof curvoice->key);
                        curvoice->sfp = s->as.u.key.sf;
                        if (curvoice->key.bagpipe
                            && curvoice->stem == 0)
                              curvoice->stem = -1;
                  }
                  break;
            }
            if (curvoice->sfp == s->as.u.key.sf /* if same key */
                && s->as.next->type != ABC_T_CLEF)    /* but not explicit clef */
                  break;                        /* ignore */

            /* the key signature must appear before a time signature */
            s2 = curvoice->last_sym;
            if (s2 != 0 && s2->type == TIMESIG) {
                  curvoice->last_sym = s2->prev;
                  sym_link(s, KEYSIG);
                  s->next = s2;
                  s2->prev = s;
                  curvoice->last_sym = s2;
            } else      sym_link(s, KEYSIG);
            s->u = curvoice->sfp;         /* old key signature */
            curvoice->sfp = s->as.u.key.sf;
      }
}

/* -- set meter from M: -- */
static void get_meter(struct SYMBOL *s)
{
      struct VOICE_S *p_voice;
      int i;

      switch (s->as.state) {
      case ABC_S_GLOBAL:
            /*fixme: keep the values and apply to all tunes?? */
            break;
      case ABC_S_HEAD: {
            for (i = MAXVOICE, p_voice = voice_tb;
                 --i >= 0;
                 p_voice++) {
                  memcpy(&p_voice->meter, &s->as.u.meter,
                         sizeof p_voice->meter);
                  p_voice->wmeasure = s->as.u.meter.wmeasure;
            }
            break;
          }
      case ABC_S_TUNE:
      case ABC_S_EMBED:
            curvoice->wmeasure = s->as.u.meter.wmeasure;
            if (curvoice->last_sym == 0) {

                  /* if first symbol of the first voice, apply to all voices */
                  if (curvoice == first_voice
                      && s->as.state == ABC_S_TUNE) { /* (not embedded) */
                        for (i = MAXVOICE, p_voice = voice_tb;
                             --i >= 0;
                             p_voice++) {
                              memcpy(&p_voice->meter, &s->as.u.meter,
                                     sizeof p_voice->meter);
                              p_voice->wmeasure = s->as.u.meter.wmeasure;
                        }
                  } else      memcpy(&curvoice->meter, &s->as.u.meter,
                               sizeof curvoice->meter);
                  reset_gen();      /* (display the time signature) */
                  break;
            }
            if (s->as.u.meter.nmeter == 0)
                  break;            /* M:none */
            sym_link(s, TIMESIG);
            break;
      }
}

/* -- treat a 'V:' -- */
static void get_voice(struct SYMBOL *s)
{
      struct VOICE_S *p_voice;
      int voice;

      voice = s->as.u.voice.voice;
      p_voice = &voice_tb[voice];
      if (parsys->voice[voice].range < 0) {
            if (cfmt.alignbars) {
                  error(1, s, "V: does not work with %%%%alignbars");
            }
            if (staves_found < 0) {
                  if (!s->as.u.voice.merge) {
#if MAXSTAFF < MAXVOICE
                        if (nstaff >= MAXSTAFF - 1) {
                              error(1, s, "Too many staves");
                              return;
                        }
#endif
                        nstaff++;
                  } else {
                        p_voice->second = 1;
                        parsys->voice[voice].second = 1;
                  }
                  p_voice->staff = p_voice->cstaff = nstaff;
                  parsys->voice[voice].staff = nstaff;
                  {
                        int range, i;

                        range = 0;
                        for (i = 0; i < MAXVOICE; i++) {
                              if (parsys->voice[i].range > range)
                                    range = parsys->voice[i].range;
                        }
                        parsys->voice[voice].range = range + 1;
                        voice_link(p_voice);
                  }
            } else {
                  p_voice->ignore = 1;
                  p_voice->staff = p_voice->cstaff = nstaff + 1;
            }
      }

      /* if something has changed, update */
      if (s->as.u.voice.name != 0)
            p_voice->name = s->as.u.voice.name;
      if (s->as.u.voice.fname != 0) {
            p_voice->nm = s->as.u.voice.fname;
            p_voice->new_name = 1;
      }
      if (s->as.u.voice.nname != 0)
            p_voice->snm = s->as.u.voice.nname;
      if (s->as.u.voice.stem != 0)
            p_voice->stem = s->as.u.voice.stem != 2
                  ? s->as.u.voice.stem : 0;
      if (s->as.u.voice.gstem != 0)
            p_voice->gstem = s->as.u.voice.gstem != 2
                  ? s->as.u.voice.gstem : 0;
      if (s->as.u.voice.dyn != 0)
            p_voice->dyn = s->as.u.voice.dyn != 2
                  ? s->as.u.voice.dyn : 0;
      if (s->as.u.voice.lyrics != 0)
            p_voice->ly_pos = s->as.u.voice.lyrics != 2
                  ? s->as.u.voice.lyrics : 0;
      if (s->as.u.voice.scale != 0)
            p_voice->scale = s->as.u.voice.scale;

      set_tblt(p_voice);

      /* if in tune, switch to this voice */
      switch (s->as.state) {
      case ABC_S_TUNE:
      case ABC_S_EMBED:
            curvoice = p_voice;
            break;
      }
}

/* -- note or rest -- */
static void get_note(struct SYMBOL *s)
{
      struct SYMBOL *prev;
      int i, m;

      prev = curvoice->last_sym;
      s->nhd = m = s->as.u.note.nhd;
      if (!(s->as.flags & ABC_F_GRACE))
            s->stem = curvoice->stem;
      else {                  /* grace note - adjust its duration */
            int div;

            s->dur = 0;
            s->stem = curvoice->gstem;
            if (!curvoice->key.bagpipe) {
                  div = 4;
                  if (s->prev == 0) {
                        if (s->as.next == 0
                            || s->as.next->type != ABC_T_NOTE
                            || !(s->as.next->flags & ABC_F_GRACE))
                              div = 2;
                  }
            } else      div = 8;
            for (i = 0; i <= m; i++)
                  s->as.u.note.lens[i] /= div;
      }
      sym_link(s,
             s->as.u.note.lens[0] != 0 ? NOTEREST : SPACE);
      s->nohdix = -1;

      /* convert the decorations */
      if (s->as.u.note.dc.n > 0)
            deco_cnv(&s->as.u.note.dc, s, prev);

      /* change the figure of whole measure rests */
      if (s->as.type == ABC_T_REST) {
            if (s->dur == curvoice->wmeasure) {
                  if (s->dur < BASE_LEN * 2)
                        s->as.u.note.lens[0] = BASE_LEN;
                  else if (s->dur < BASE_LEN * 4)
                        s->as.u.note.lens[0] = BASE_LEN * 2;
                  else  s->as.u.note.lens[0] = BASE_LEN * 4;
            }
      }

      /* sort by pitch the notes of the chord (lowest first) */
      else for (;;) {
            int nx = 0;

            for (i = 1; i <= m; i++) {
                  if (s->as.u.note.pits[i] < s->as.u.note.pits[i-1]) {
                        int k;
#define xch(f) \
      k = s->as.u.note.f[i]; \
      s->as.u.note.f[i] = s->as.u.note.f[i-1]; \
      s->as.u.note.f[i-1] = k
                        xch(pits);
                        xch(lens);
                        xch(accs);
                        xch(sl1);
                        xch(sl2);
                        xch(ti1);
                        xch(decs);
#undef xch
                        nx++;
                  }
            }
            if (nx == 0)
                  break;
      }

      memcpy(s->pits, s->as.u.note.pits, sizeof s->pits);

      /* get the max head type, number of dots and number of flags */
      {
            int head, dots, nflags, l;

            if ((l = s->as.u.note.lens[0]) != 0) {
                  identify_note(s, l, &head, &dots, &nflags);
                  s->head = head;
                  s->dots = dots;
                  if (!(s->sflags & S_TREM)) {
                        s->nflags = nflags;
                        for (i = 1; i <= m; i++) {
                              if (s->as.u.note.lens[i] == l)
                                    continue;
                              identify_note(s, s->as.u.note.lens[i],
                                          &head, &dots, &nflags);
                              if (head > s->head)
                                    s->head = head;
                              if (dots > s->dots)
                                    s->dots = dots;
                              if (nflags > s->nflags)
                                    s->nflags = nflags;
                        }
                        if (s->sflags & S_XSTEM)
                              s->nflags = 0;    /* word start+end */
                  } else {    /* 2nd tremolo note */
                        prev->head = head;
                        if (head >= H_OVAL) {
                              s->as.flags |= ABC_F_STEMLESS;
                              prev->as.flags |= ABC_F_STEMLESS;
                        }
                  }
            }
      }
      if (s->nflags <= -2)
            s->as.flags |= ABC_F_STEMLESS;

      for (i = 0; i <= m; i++) {
            if (s->as.u.note.sl1[i] != 0)
                  s->sflags |= S_SL1;
            if (s->as.u.note.sl2[i] != 0)
                  s->sflags |= S_SL2;
            if (s->as.u.note.ti1[i] != 0)
                  s->sflags |= S_TI1;
      }

      if (s->as.flags & ABC_F_LYRIC_START) {
            lyric_start = s;
            lyric_cont = 0;
            lyric_nb = 0;
      }

      /* adjust the guitar chords */
      if (s->as.text != 0)
            gchord_adjust(s);
}

/* -- treat a postscript definition -- */
static void ps_def(struct SYMBOL *s,
               char *p)
{
      if (s->as.prev != 0)
            s->as.state = s->as.prev->state;
      if (s->as.state == ABC_S_TUNE
          || s->as.state == ABC_S_EMBED) {
            sym_link(s, FMTCHG);
            s->u = PSSEQ;
            s->as.text = p;
            s->as.flags |= ABC_F_INVIS;
            if (s->prev != 0 && (s->prev->sflags & S_EOLN)) {
                  s->sflags |= S_EOLN;
                  s->prev->sflags &= ~S_EOLN;
            }
            return;
      }
      if (file_initialized) {
            PUT1("%s\n", p);
            return;
      }
      interpret_fmt_line("postscript", p, 0);
}

/* -- process a pseudo-comment (%% or I:) -- */
static struct abcsym *process_pscomment(struct abcsym *as)
{
      char w[32], *p;
      float h1;
      struct SYMBOL *s = (struct SYMBOL *) as;

      p = as->text + 2;       /* skip '%%' */
      while (isspace((unsigned char) *p))
            p++;
      if (strncasecmp(p, "fmt ", 4) == 0) {
            p += 4;                 /* skip 'fmt' */
            while (isspace((unsigned char) *p))
                  p++;
      }
      p = get_str(w, p, sizeof w);
      switch (w[0]) {
      case 'b':
            if (strcmp(w, "beginps") == 0) {
                  for (;;) {
                        if (as->next == 0)
                              return as;
                        as = as->next;
                        p = as->text;
                        if (*p == '%' && p[1] == '%') {
                              p += 2;
                              while (isspace((unsigned char) *p))
                                    p++;
                              if (strncasecmp(p, "fmt ", 4) == 0) {
                                    p += 4;
                                    while (isspace((unsigned char) *p))
                                          p++;
                              }
                              if (strncmp(p, "endps", 5) == 0)
                                    return as;
                        }
                        if (*p == '%')
                              continue;   /* skip comment lines */
                        s = (struct SYMBOL *) as;
                        ps_def(s, p);
                  }
                  /* not reached */
            }
            if (strcmp(w, "begintext") == 0) {
                  int job;

                  if (epsf && as->state != ABC_S_HEAD)
                        return as;
                  if ((job = cfmt.textoption) == T_SKIP)
                        return as;
                  if (*p != '\0') {
                        job = get_textopt(p);
                        if (job < 0) {
                              error(1, s,
                                    "Bad argument for begintext: %s", p);
                              job = T_LEFT;
                        }
                  }
                  gen_ly(1);
                  for (;;) {
                        if (as->next == 0)
                              return as;
                        as = as->next;
                        p = as->text;
                        if (*p == '%' && p[1] == '%') {
                              p += 2;
                              while (isspace((unsigned char) *p))
                                    p++;
                              if (strncasecmp(p, "fmt ", 4) == 0) {
                                    p += 4;
                                    while (isspace((unsigned char) *p))
                                          p++;
                              }
                              if (strncmp(p, "endtext", 7) == 0) {
                                    if (job != T_SKIP)
                                          write_text_block(job, as->state);
                                    return as;
                              }
                        }
                        if (job != T_SKIP)
                              add_to_text_block(p, job);
                  }
                  /* not reached */
            }
            break;
      case 'E':
            if (strcmp(w, "EPS") == 0) {
                  float x1, y1, x2, y2;
                  FILE *fp;
                  char fn[BSIZE], line[BSIZE];

                  gen_ly(1);
                  if (cfmt.textoption == T_SKIP)
                        return as;
                  get_str(line, p, BSIZE);
                  if ((fp = open_file(line, "eps", fn)) == 0) {
                        error(1, s, "No such file: %s", line);
                        return as;
                  }

                  /* get the bounding box */
                  while (fgets(line, sizeof line, fp)) {
                        if (strncmp(line, "%%BoundingBox:", 14) == 0) {
                              if (sscanf(&line[14], "%f %f %f %f",
                                       &x1, &y1, &x2, &y2) == 4)
                                    break;
                        }
                  }
                  fclose(fp);
                  if (strncmp(line, "%%BoundingBox:", 14) != 0) {
                        error(1, s,
                              "No bounding box in '%s'", fn);
                        return as;
                  }
                  if (cfmt.textoption == T_CENTER
                      || cfmt.textoption == T_RIGHT) {
                        float lw;

                        lw = ((cfmt.landscape ? cfmt.pageheight : cfmt.pagewidth)
                              - cfmt.leftmargin - cfmt.rightmargin) / cfmt.scale;
                        if (cfmt.textoption == T_CENTER)
                              x1 += (lw - (x2 - x1)) * 0.5;
                        else  x1 += lw - (x2 - x1);
                  }
                  PUT0("\001");     /* include file (must be the first after eob) */
                  bskip(y2 - y1);
                  PUT3("%.2f %.2f%%%s\n", x1, y1, fn);
                  buffer_eob();
                  return as;
            }
            break;
      case 'm':
            if (strcmp(w, "maxsysstaffsep") == 0) {
                  if (as->state != ABC_S_TUNE
                      && as->state != ABC_S_EMBED)
                        break;
                  parsys->voice[curvoice - voice_tb].maxsep = scan_u(p);
                  return as;
            }
            if (strcmp(w, "measrep") == 0)
                  goto irepeat;
            if (strcmp(w, "multicol") == 0) {
                  float bposy;

                  generate();
                  buffer_eob();
                  if (strncmp(p, "start", 5) == 0) {
                        if (!in_page)
                              PUT0("%%\n");     /* initialize the output */
                        bposy = get_bposy();
                        multicol_max = multicol_start = bposy;
                        lmarg = cfmt.leftmargin;
                        rmarg = cfmt.rightmargin;
                  } else if (strncmp(p, "new", 3) == 0) {
                        if (multicol_start == 0)
                              error(1, s,
                                    "%%%%multicol new without start");
                        else {
                              bposy = get_bposy();
                              if (bposy < multicol_start)
                                    abskip(bposy - multicol_start);
                              if (bposy < multicol_max)
                                    multicol_max = bposy;
                              cfmt.leftmargin = lmarg;
                              cfmt.rightmargin = rmarg;
                        }
                  } else if (strncmp(p, "end", 3) == 0) {
                        if (multicol_start == 0)
                              error(1, s,
                                    "%%%%multicol end without start");
                        else {
                              bposy = get_bposy();
                              if (bposy > multicol_max)
                                    abskip(bposy - multicol_max);
                              cfmt.leftmargin = lmarg;
                              cfmt.rightmargin = rmarg;
                              multicol_start = 0;
                              PUT0("%%\n");     /* force write_buffer */
                              buffer_eob();
                        }
                  } else {
                        error(1, s,
                              "Unknown keyword '%s' in %%%%multicol", p);
                  }
                  return as;
            }
            break;
      case 'n':
            if (strcmp(w, "newpage") == 0) {
                  if (epsf)
                        return as;
                  gen_ly(0);
                  write_buffer();
                  use_buffer = 0;
                  if (isdigit((unsigned char) *p))
                        pagenum = atoi(p);
                  close_page();
                  return as;
            }
            break;
      case 'p':
            if (strcmp(w, "postscript") == 0) {
                  ps_def(s, p);
                  return as;
            }
            break;
      case 'r':
            if (strcmp(w, "repbra") == 0) {
                  if (as->state != ABC_S_TUNE
                      && as->state != ABC_S_EMBED)
                        return as;
                  curvoice->norepbra = !atoi(p);
                  return as;
            }
            if (strcmp(w, "repeat") == 0) {
                  int n, k;

irepeat:
                  if (curvoice->last_sym == 0) {
                        error(1, s,
                              "%%%%repeat cannot start a tune");
                        return as;
                  }
                  if (*p == '\0') {
                        n = 1;
                        k = 1;
                  } else {
                        n = atoi(p);
                        if (n < 1
                            || (curvoice->last_sym->type == BAR
                              && n > 2)) {
                              error(1, s,
                                    "Incorrect 1st value in %%%%repeat");
                              return as;
                        }
                        while (*p != '\0' && !isspace((unsigned char) *p))
                              p++;
                        while (isspace((unsigned char) *p))
                              p++;
                        if (*p == '\0')
                              k = 1;
                        else {
                              k = atoi(p);
                              if (k < 1
                                  || (curvoice->last_sym->type == BAR
                                    && n == 2
                                    && k > 1)) {
                                    error(1, s,
                                          "Incorrect 2nd value in %%%%repeat");
                                    return as;
                              }
                        }
                  }
                  s->u = REPEAT;
                  if (curvoice->last_sym->type == BAR)
                        s->doty = n;
                  else  s->doty = -n;
                  sym_link(s, FMTCHG);
                  s->nohdix = k;
                  as->text = 0;
                  return as;
            }
            break;
      case 's':
            if (strcmp(w, "setbarnb") == 0) {
                  if (as->state == ABC_S_TUNE
                      || as->state == ABC_S_EMBED) {
                        bar_number = atoi(p);
                        return as;
                  }
                  strcpy(w, "measurefirst");
                  break;
            }
            if (strcmp(w, "sep") == 0) {
                  float h2, len, lwidth;

                  gen_ly(0);
                  lwidth = (cfmt.landscape ? cfmt.pageheight : cfmt.pagewidth)
                        - cfmt.leftmargin - cfmt.rightmargin;
                  h1 = h2 = len = 0;
                  if (*p != '\0') {
                        h1 = scan_u(p);
                        while (*p != '\0' && !isspace((unsigned char) *p))
                              p++;
                        while (isspace((unsigned char) *p))
                              p++;
                  }
                  if (*p != '\0') {
                        h2 = scan_u(p);
                        while (*p != '\0' && !isspace((unsigned char) *p))
                              p++;
                        while (isspace((unsigned char) *p))
                              p++;
                  }
                  if (*p != '\0')
                        len = scan_u(p);
                  if (h1 < 1)
                        h1 = 0.5 CM;
                  if (h2 < 1)
                        h2 = h1;
                  if (len < 1)
                        len = 3.0 CM;
                  bskip(h1);
                  PUT2("%.1f %.1f sep0\n",
                       len / cfmt.scale,
                       (lwidth - len) * 0.5 / cfmt.scale);
                  bskip(h2);
                  buffer_eob();
                  return as;
            }
            if (strcmp(w, "staff") == 0) {
                  int staff;

                  if (as->state != ABC_S_TUNE
                      && as->state != ABC_S_EMBED)
                        return as;
                  if (*p == '+')
                        staff = curvoice->cstaff + atoi(p + 1);
                  else if (*p == '-')
                        staff = curvoice->cstaff - atoi(p + 1);
                  else  staff = atoi(p) - 1;
                  if ((unsigned) staff > nstaff) {
                        error(1, s, "Bad staff in %%%%staff");
                        return as;
                  }
                  curvoice->floating = 0;
                  curvoice->cstaff = staff;
                  return as;
            }
            if (strcmp(w, "staffbreak") == 0) {
                  if (as->state != ABC_S_TUNE
                      && as->state != ABC_S_EMBED)
                        return as;
                  sym_link(s, STBRK);
                  if (isdigit(*p)) {
                        s->xmx = scan_u(p);
                        if (p[strlen(p) - 1] == 'f')
                              s->doty = 1;
                  } else {
                        s->xmx = 0.5 CM;
                        if (*p == 'f')
                              s->doty = 1;
                  }
                  return as;
            }
            if (strcmp(w, "staves") == 0
                || strcmp(w, "score") == 0) {
                  if (as->state == ABC_S_GLOBAL)
                        return as;
#if 0
                  if (as->state == ABC_S_TUNE
                      || as->state == ABC_S_EMBED) {
                        generate();
                        buffer_eob();
                        voice_init();
                  }
#endif
                  get_staves(s);
                  return as;
            }
            if (strcmp(w, "sysstaffsep") == 0) {
                  if (as->state != ABC_S_TUNE
                      && as->state != ABC_S_EMBED)
                        break;
                  parsys->voice[curvoice - voice_tb].sep = scan_u(p);
                  return as;
            }
            break;
      case 'c':
      case 't':
            if (strcmp(w, "text") == 0 || strcmp(w, "center") == 0) {
                  int job;

                  if (epsf && as->state == ABC_S_GLOBAL)
                        return as;
                  if ((job = cfmt.textoption) == T_SKIP)
                        return as;
                  if (w[0] == 'c')
                        job = T_CENTER;
                  gen_ly(1);
                  add_to_text_block(p, job);
                  write_text_block(job, as->state);
                  return as;
            }
            if (strcmp(w, "tablature") == 0) {
                  struct tblt_s *tblt;
                  int i, j;

                  tblt = tblt_parse(p);
                  if (tblt == 0)
                        return as;

                  switch (as->state) {
                  case ABC_S_TUNE:
                  case ABC_S_EMBED:
                        for (i = 0; i < ncmdtblt; i++) {
                              if (cmdtblts[i].active)
                                    continue;
                              j = cmdtblts[i].index;
                              if (j < 0 || tblts[j] == tblt)
                                    return as;
                        }
                        /* !! 2 tblts per voice !! */
                        if (curvoice->tblts[0] == tblt
                            || curvoice->tblts[1] == tblt)
                              break;
                        if (curvoice->tblts[1] != 0) {
                              error(1, s, "Too many tablatures for voice %s",
                                    curvoice->name);
                              break;
                        }
                        if (curvoice->tblts[0] == 0)
                              curvoice->tblts[0] = tblt;
                        else  curvoice->tblts[1] = tblt;
                        break;
                  }
                  return as;
            }
            break;
      case 'v':
            if (strcmp(w, "vskip") == 0) {
                  gen_ly(0);
                  h1 = scan_u(p);
                  bskip(h1);
                  buffer_eob();
                  return as;
            }
            break;
      }
      if (as->state == ABC_S_TUNE
          || as->state == ABC_S_EMBED) {
            if (strcmp(w, "leftmargin") == 0
                || strcmp(w, "rightmargin") == 0
                || strcmp(w, "scale") == 0) {
                  gen_ly(1);
            }
      }
      interpret_fmt_line(w, p, 0);
      if (cfmt.alignbars && strcmp(w, "alignbars") == 0) {
            int i;

            generate();
            if ((unsigned) cfmt.alignbars > MAXSTAFF) {
                  error(1, s, "Too big value in %%%%alignbars");
                  cfmt.alignbars = MAXSTAFF;
            }
            if (staves_found >= 0)        /* (compatibility) */
                  cfmt.alignbars = nstaff + 1;
            first_voice = curvoice = &voice_tb[0];
            for (i = 0; i < cfmt.alignbars; i++) {
                  parsys->staff[i].flags |= STOP_BAR;
                  voice_tb[i].staff = voice_tb[i].cstaff = i;
                  parsys->voice[i].staff = i;
                  parsys->voice[i].range = i;
            }
            nstaff = i;
      }
      return as;
}

/* -- set the duration of notes/rests in a tuplet -- */
static void set_tuplet(struct SYMBOL *t)
{
      struct abcsym *as, *first;
      struct SYMBOL *s;
      int l, r, lplet, grace;

      r = t->as.u.tuplet.r_plet;
      grace = t->as.flags & ABC_F_GRACE;
      l = 0;
      first = 0;
      for (as = t->as.next; as != 0; as = as->next) {
/*fixme: KO if voice change..*/
            if (as->type != ABC_T_NOTE && as->type != ABC_T_REST)
                  continue;
            if (as->u.note.lens[0] == 0)  /* space ('y') */
                  continue;
            if (grace ^ (as->flags & ABC_F_GRACE))
                  continue;
            if (first == 0)
                  first = as;
            s = (struct SYMBOL *) as;
            l += s->dur;
            if (--r <= 0)
                  break;
      }
      if (as == 0) {
            error(1, t,
                  "End of tune found inside a tuplet");
            return;
      }
      lplet = (l * t->as.u.tuplet.q_plet) / t->as.u.tuplet.p_plet;
      r = t->as.u.tuplet.r_plet;
      for (as = first; as != 0; as = as->next) {
            int olddur;

/*fixme: KO if voice change..*/
            if (as->type != ABC_T_NOTE && as->type != ABC_T_REST)
                  continue;
            if (as->u.note.lens[0] == 0)
                  continue;
            if (grace ^ (as->flags & ABC_F_GRACE))
                  continue;
            s = (struct SYMBOL *) as;
            s->sflags |= S_IN_TUPLET;
            olddur = s->dur;
            s->dur = (olddur * lplet) / l;
            if (--r <= 0) {
                  break;
            }
            l -= olddur;
            lplet -= s->dur;
      }
/*fixme: KO if in a grace sequence*/
      if (grace)
            error(1, t,
                  "Tuplets in grace note sequence not yet treated");
      else {
            sym_link(t, TUPLET);
            t->u = cfmt.tuplets;
      }
}

/* -- add a new symbol in a voice -- */
struct SYMBOL *sym_add(struct VOICE_S *p_voice, int type)
{
      struct SYMBOL *s;
      struct VOICE_S *p_voice2;

      s = (struct SYMBOL *) getarena(sizeof *s);
      memset(s, 0, sizeof *s);
      p_voice2 = curvoice;
      curvoice = p_voice;
      sym_link(s, type);
      if (p_voice->second)
            s->sflags |= S_SECOND;
      if (p_voice->floating)
            s->sflags |= S_FLOATING;
      curvoice = p_voice2;
      return s;
}

/* -- link a ABC symbol into a voice -- */
static void sym_link(struct SYMBOL *s, int type)
{
      struct VOICE_S *p_voice = curvoice;

/*    memset((&s->as) + 1, 0, sizeof (struct SYMBOL) - sizeof (struct abcsym)); */
      if (!p_voice->ignore) {
            if (p_voice->sym != 0) {
                  p_voice->last_sym->next = s;
                  s->prev = p_voice->last_sym;
            } else      p_voice->sym = s;
      }
      p_voice->last_sym = s;

      s->type = type;
      s->voice = p_voice - voice_tb;
      s->staff = p_voice->cstaff;
      s->time = p_voice->time;
      if (s->dur != 0)
            p_voice->time += s->dur;
}