[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | delnote.c -- MIDAS-VII note deletion
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| 4 | Version 16 -- 1988-10-27 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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[b28a12e] | 8 | #include "ram.h"
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[e225e77] | 9 |
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[f40a309] | 10 | #define TO_LFT (TO_BAK + 1)
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| 11 |
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| 12 | /* |
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| 13 |
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| 14 | */
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| 15 |
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| 16 | /*
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| 17 | =============================================================================
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| 18 | delnote() -- delete a note
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| 19 | =============================================================================
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| 20 | */
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[7258c6a] | 21 |
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[f40a309] | 22 | int16_t delnote(void)
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| 23 | {
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[7258c6a] | 24 | register struct n_entry *bp, *cp, *ep;
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| 25 | register int32_t t_left;
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| 26 | register int16_t tnote, grp;
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| 27 | register int16_t runtag, scantag;
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[f40a309] | 28 | int16_t disptag;
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| 29 |
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| 30 | disptag = FALSE; /* nothing changed yet */
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| 31 |
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| 32 | if (NOT recsw) /* must be in record mode */
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| 33 | return(FAILURE);
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| 34 |
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| 35 | /* convert cursor position to note number and time */
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[e225e77] | 36 |
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[f40a309] | 37 | if (pix2mid())
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| 38 | goto notnote;
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| 39 |
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| 40 | ++cflag;
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| 41 | tnote = cnote;
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| 42 | t_left = t_cur - TO_LFT;
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| 43 | cp = (struct n_entry *)frfind(ctime, 0);
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| 44 |
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| 45 | /* |
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| 46 |
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| 47 | */
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| 48 | while (cflag--) { /* handle both naturals and accidentals */
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| 49 |
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| 50 | for (grp = 0; grp < 12; grp++) { /* for each group ... */
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| 51 |
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| 52 | if ((grpstat[grp] EQ 0) OR /* ... enabled and ... */
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| 53 | (grpmode[grp] NE 2)) /* ... in record mode: */
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| 54 | continue;
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| 55 |
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| 56 | runtag = TRUE;
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| 57 | bp = cp; /* start at cursor */
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| 58 |
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| 59 | while (runtag) { /* scan left from cursor until: */
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| 60 |
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| 61 | if ((bp->e_time LT t_left) OR
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| 62 | (bp->e_type EQ EV_SCORE)) { /* left edge */
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| 63 |
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| 64 | /* done -- nothing to delete */
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| 65 |
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| 66 | runtag = FALSE;
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| 67 | continue;
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| 68 | /* |
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| 69 |
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| 70 | */
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| 71 | } else if ((bp->e_type EQ EV_NEND) AND
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| 72 | (bp->e_note EQ tnote) AND
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| 73 | (bp->e_group EQ grp)) { /* note end */
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| 74 |
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| 75 | /* done -- overlap */
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| 76 |
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| 77 | runtag = FALSE;
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| 78 | continue;
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| 79 | /* |
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| 80 |
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| 81 | */
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| 82 |
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| 83 | } else if ((bp->e_type EQ EV_NBEG) AND
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| 84 | (bp->e_note EQ tnote) AND
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| 85 | (bp->e_group EQ grp)) { /* note begin */
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| 86 |
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| 87 | /* possible deletion */
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| 88 |
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| 89 | /* scan right from note begin until: */
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| 90 |
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| 91 | ep = bp->e_fwd;
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| 92 | scantag = TRUE;
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| 93 |
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| 94 | while (scantag) {
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| 95 |
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| 96 | /* note begin -- done -- overlap */
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| 97 |
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| 98 | if ((ep->e_type EQ EV_NBEG) AND
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| 99 | (ep->e_note EQ tnote) AND
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| 100 | (ep->e_group EQ grp)) {
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| 101 |
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| 102 | scantag = FALSE;
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[9519422] | 103 | runtag = FALSE;
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[f40a309] | 104 | continue;
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| 105 | /* |
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| 106 |
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| 107 | */
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| 108 |
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| 109 | } else if ((ep->e_type EQ EV_NEND) AND
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| 110 | (ep->e_note EQ tnote) AND
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| 111 | (ep->e_group EQ grp)) {
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| 112 |
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| 113 | /* note end */
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| 114 |
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| 115 | /* delete note end */
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| 116 |
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| 117 | if (cp EQ ep)
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| 118 | cp = cp->e_bak;
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| 119 |
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| 120 | if (p_ctr EQ ep)
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| 121 | p_ctr = p_ctr->e_bak;
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| 122 |
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| 123 | if (p_bak EQ ep)
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| 124 | p_bak = p_bak->e_bak;
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| 125 |
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| 126 | if (p_fwd EQ ep)
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| 127 | p_fwd = p_fwd->e_bak;
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| 128 |
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| 129 | if (p_cur EQ ep)
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| 130 | p_cur = p_cur->e_bak;
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| 131 |
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| 132 | e_del(e_rmv(ep));
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| 133 | /* |
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| 134 |
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| 135 | */
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| 136 |
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| 137 | /* delete note begin */
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| 138 |
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| 139 | if (cp EQ bp)
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| 140 | cp = cp->e_bak;
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| 141 |
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| 142 | if (p_ctr EQ bp)
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| 143 | p_ctr = p_ctr->e_bak;
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| 144 |
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| 145 | if (p_bak EQ bp)
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| 146 | p_bak = p_bak->e_bak;
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| 147 |
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| 148 | if (p_fwd EQ bp)
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| 149 | p_fwd = p_fwd->e_bak;
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| 150 |
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| 151 | if (p_cur EQ bp)
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| 152 | p_cur = p_cur->e_bak;
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| 153 |
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| 154 | e_del(e_rmv(bp));
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| 155 |
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| 156 | disptag = TRUE;
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| 157 | runtag = FALSE;
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| 158 | scantag = FALSE;
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| 159 | continue;
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| 160 | /* |
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| 161 |
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| 162 | */
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| 163 |
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| 164 | } else if (ep->e_type EQ EV_FINI) {
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| 165 |
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| 166 | /* score end */
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| 167 |
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| 168 | /* delete note begin */
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| 169 |
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| 170 | if (cp EQ bp)
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| 171 | cp = cp->e_bak;
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| 172 |
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| 173 | if (p_ctr EQ bp)
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| 174 | p_ctr = p_ctr->e_bak;
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| 175 |
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| 176 | if (p_bak EQ bp)
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| 177 | p_bak = p_bak->e_bak;
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| 178 |
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| 179 | if (p_fwd EQ bp)
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| 180 | p_fwd = p_fwd->e_bak;
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| 181 |
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| 182 | if (p_cur EQ bp)
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| 183 | p_cur = p_cur->e_bak;
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| 184 |
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| 185 | e_del(e_rmv(bp));
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| 186 |
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| 187 | disptag = TRUE;
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| 188 | runtag = FALSE;
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| 189 | scantag = FALSE;
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| 190 | continue;
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| 191 | }
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| 192 |
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| 193 | /* scan right */
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| 194 |
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| 195 | ep = ep->e_fwd;
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| 196 |
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| 197 | } /* end while (scantag) */
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| 198 |
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| 199 | } /* end if */
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| 200 | /* |
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| 201 |
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| 202 | */
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| 203 |
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| 204 | /* scan left */
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| 205 |
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| 206 | bp = bp->e_bak;
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| 207 |
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| 208 | } /* end while (runtag) */
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| 209 |
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| 210 | } /* end for (grp) */
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| 211 |
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| 212 | /* handle accidentals */
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| 213 |
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| 214 | if (ac_code EQ N_SHARP)
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| 215 | ++tnote; /* treat accidentals as sharps */
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| 216 | else
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| 217 | --tnote; /* treat accidentals as flats */
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| 218 |
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| 219 | } /* end while (cflag) */
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| 220 |
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| 221 |
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| 222 | /* |
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| 223 |
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| 224 | */
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| 225 |
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| 226 | notnote: /* jumped to if pix2mid() returned FAILURE (not on a note) */
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| 227 |
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| 228 | /* check for a bar marker delete operation */
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| 229 |
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| 230 | if (NOT disptag) { /* if no notes were deleted, try for a bar */
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| 231 |
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| 232 | if (ctime < 0L) /* time has to be good */
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| 233 | return(FAILURE);
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| 234 |
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| 235 | /* search current time for a bar marker - delete any found */
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| 236 |
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| 237 | ep = ep_adj(p_cur, 1, ctime);
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| 238 |
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| 239 | while (ctime EQ ep->e_time) {
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| 240 |
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| 241 | bp = ep->e_fwd;
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| 242 |
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| 243 | if (EV_BAR EQ ep->e_type) {
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| 244 |
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| 245 | if (ep EQ p_bak)
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| 246 | p_bak = p_bak->e_bak;
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| 247 |
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| 248 | if (ep EQ p_ctr)
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| 249 | p_ctr = p_ctr->e_bak;
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| 250 |
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| 251 | if (ep EQ p_cur)
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| 252 | p_cur = p_cur->e_bak;
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| 253 |
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| 254 | if (ep EQ p_fwd)
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| 255 | p_fwd = p_fwd->e_bak;
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| 256 |
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| 257 | e_del(e_rmv(ep));
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| 258 | disptag = TRUE;
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| 259 | }
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| 260 |
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[6262b5c] | 261 | ep = bp;
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| 262 | }
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| 263 | }
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| 264 |
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| 265 | if (disptag)
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| 266 | sc_refr(t_cur);
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| 267 |
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| 268 | return(disptag ? SUCCESS : FAILURE);
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| 269 | }
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| 270 |
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