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abcparse.c
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/*
* Generic ABC parser.
*
* Copyright (C) 1998-2014 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., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "abcparse.h"
/* interface */
static void *(*alloc_f)(int size);
static void (*free_f)(void *);
static void (*level_f)(int level);
static int client_sz;
static int keep_comment;
/* global values */
char *deco_tb[128]; /* decoration names */
int severity; /* error severity */
extern int quiet;
static int abc_vers; /* abc version */
static short abc_state; /* parse state */
static short ulen; /* unit note length set by M: or L: */
static short meter; /* upper value of time sig for n-plets */
static unsigned char microscale; /* current microtone scale */
static signed char vover; /* voice overlay (1: single bar, -1: multi-bar */
static char lyric_started; /* lyric started */
static char *gchord; /* guitar chord */
static struct deco dc; /* decorations */
static struct abcsym *deco_start; /* 1st note of the line for d: / s: */
static struct abcsym *deco_cont; /* current symbol when d: / s: continuation */
static unsigned short *p_micro; /* ptr to the microtone table of the tune */
#define VOICE_NAME_SZ 64 /* max size of a voice name */
static char *file; /* remaining abc file */
static int linenum; /* current source line number */
static int colnum; /* current source column number */
static char *abc_line; /* line being parsed */
static struct abcsym *last_sym; /* last symbol for errors */
static short nvoice; /* number of voices (0..n-1) */
static struct { /* voice table and current pointer */
char id[VOICE_ID_SZ]; /* voice ID */
struct abcsym *last_note; /* last note or rest */
short ulen; /* unit note length */
unsigned char microscale; /* microtone scale */
unsigned char mvoice; /* main voice when voice overlay */
} voice_tb[MAXVOICE], *curvoice;
/* char table for note line parsing */
#define CHAR_BAD 0
#define CHAR_IGN 1
#define CHAR_NOTE 2
#define CHAR_REST 3
#define CHAR_ACC 4
#define CHAR_GR_ST 5
#define CHAR_DECO 6
#define CHAR_GCHORD 7
#define CHAR_BSLASH 8
#define CHAR_OBRA 9
#define CHAR_BAR 10
#define CHAR_OPAR 11
#define CHAR_VOV 12
#define CHAR_SPAC 13
#define CHAR_MINUS 14
#define CHAR_CPAR 15
#define CHAR_BRHY 16
#define CHAR_DECOS 17
#define CHAR_SLASH 18
#define CHAR_GR_EN 19
#define CHAR_LINEBREAK 20
static char char_tb[256] = {
0, 0, 0, 0, 0, 0, 0, 0, /* 00 - 07 */
0, CHAR_SPAC, CHAR_LINEBREAK, 0, 0, 0, 0, 0, /* 08 - 0f */
0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 17 */
0, 0, 0, 0, 0, 0, 0, 0, /* 18 - 1f */
CHAR_SPAC, CHAR_DECOS, CHAR_GCHORD, CHAR_BAD, /* (sp) ! " # */
CHAR_BAD, CHAR_BAD, CHAR_VOV, CHAR_BAD, /* $ % & ' */
CHAR_OPAR, CHAR_CPAR, CHAR_BAD, CHAR_DECOS, /* ( ) * + */
CHAR_BAD, CHAR_MINUS, CHAR_DECO, CHAR_SLASH, /* , - . / */
CHAR_BAD, CHAR_BAD, CHAR_BAD, CHAR_BAD, /* 0 1 2 3 */
CHAR_BAD, CHAR_BAD, CHAR_BAD, CHAR_BAD, /* 4 5 6 7 */
CHAR_BAD, CHAR_BAD, CHAR_BAR, CHAR_BAD, /* 8 9 : ; */
CHAR_BRHY, CHAR_ACC, CHAR_BRHY, CHAR_BAD, /* < = > ? */
CHAR_BAD, CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, /* @ A B C */
CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, /* D E F G */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* H I J K */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* L M N O */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* P Q R S */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* T U V W */
CHAR_REST, CHAR_DECO, CHAR_REST, CHAR_OBRA, /* X Y Z [ */
CHAR_BSLASH, CHAR_BAR, CHAR_ACC, CHAR_ACC, /* \ ] ^ _ */
CHAR_IGN, CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, /* ` a b c */
CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, CHAR_NOTE, /* d e f g */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* h i j k */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* l m n o */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* p q r s */
CHAR_DECO, CHAR_DECO, CHAR_DECO, CHAR_DECO, /* t u v w */
CHAR_REST, CHAR_REST, CHAR_REST, CHAR_GR_ST, /* x y z { */
CHAR_BAR, CHAR_GR_EN, CHAR_DECO, CHAR_BAD, /* | } ~ (del) */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* a0 - af */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* b0 - bf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* c0 - cf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* d0 - df */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* e0 - ef */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* f0 - ff */
};
static const char all_notes[] = "CDEFGABcdefgab";
static char *get_line(void);
static char *parse_len(char *p,
int *p_len);
static char *parse_basic_note(char *p,
int *pitch,
int *length,
int *accidental,
int *stemless);
static int parse_info(struct abctune *t,
char *p,
char *comment);
static char *parse_gchord(char *p);
static int parse_line(struct abctune *t,
char *p);
static char *parse_note(struct abctune *t,
char *p,
int flags);
static void syntax(char *msg, char *q);
static void vover_new(void);
/* -- abcMIDI like errors -- */
static void print_error(char *s, int col)
{
if (col >= 0)
fprintf(stderr, "Error in line %d.%d: %s\n", linenum, col, s);
else
fprintf(stderr, "Error in line %d: %s\n", linenum, s);
}
/* -- delete an ABC symbol -- */
void abc_delete(struct abcsym *as)
{
switch (as->type) {
case ABC_T_INFO:
switch (as->text[0]) {
case 'Q':
if (as->u.tempo.str1)
free_f(as->u.tempo.str1);
if (as->u.tempo.value)
free_f(as->u.tempo.value);
if (as->u.tempo.str2)
free_f(as->u.tempo.str2);
break;
case 'V':
if (as->u.voice.fname)
free_f(as->u.voice.fname);
if (as->u.voice.nname)
free_f(as->u.voice.nname);
break;
}
break;
}
if (as->text)
free_f(as->text);
if (as->comment)
free_f(as->comment);
if (as->prev)
as->prev->next = as->next;
if (as->next)
as->next->prev = as->prev;
if (as->tune->first_sym == as)
as->tune->first_sym = as->next;
if (as->tune->last_sym == as)
as->tune->last_sym = as->prev;
free_f(as);
}
/* -- free the memory areas of all tunes -- */
void abc_free(struct abctune *t)
{
struct abctune *tn;
struct abcsym *s, *sn;
if (!free_f)
return;
for (;;) {
if (!t)
break;
s = t->first_sym;
/* free the associated symbols */
for (;;) {
sn = s->next;
abc_delete(s);
if ((s = sn) == NULL)
break;
}
/* free the tune */
tn = t->next;
free_f(t);
t = tn;
}
}
/* -- initialize the parser -- */
void abc_init(void *alloc_f_api(int size),
void free_f_api(void *ptr),
void level_f_api(int level),
int client_sz_api,
int keep_comment_api)
{
if (alloc_f) {
fprintf(stderr, "abc_init already initialized\n");
return;
}
alloc_f = alloc_f_api;
free_f = free_f_api;
level_f = level_f_api;
client_sz = client_sz_api;
keep_comment = keep_comment_api;
}
/* -- insert an ABC description -- */
void abc_insert(char *file_api,
struct abcsym *s)
{
struct abctune *t;
char *p;
/* initialize */
file = file_api;
if (level_f)
level_f(abc_state != ABC_S_GLOBAL);
abc_state = ABC_S_TUNE;
linenum = 0;
t = s->tune;
t->last_sym = s;
/* scan till end of description */
for (;;) {
if ((p = get_line()) == NULL)
break; /* done */
if (*p == '\0')
break; /* blank line --> done */
/*fixme-insert: don't accept X:*/
/* parse the music line */
if (parse_line(t, p))
break;
}
}
/* -- new symbol -- */
struct abcsym *abc_new(struct abctune *t,
char *text,
char *comment)
{
struct abcsym *s;
s = alloc_f(sizeof *s + client_sz);
memset(s, 0, sizeof *s + client_sz);
s->tune = t;
if (text) {
s->text = alloc_f(strlen(text) + 1);
strcpy(s->text, text);
}
if (comment) {
s->comment = alloc_f(strlen(comment) + 1);
strcpy(s->comment, comment);
}
if (!t->last_sym) {
t->first_sym = s;
} else {
if ((s->next = t->last_sym->next) != NULL)
s->next->prev = s;
t->last_sym->next = s;
s->prev = t->last_sym;
}
last_sym = t->last_sym = s;
s->state = abc_state;
s->linenum = linenum;
s->colnum = colnum;
return s;
}
/* get the ABC version */
static void get_vers(char *p)
{
int i, j,k;
i = j = k = 0;
if (sscanf(p, "%d.%d.%d", &i, &j, &k) != 3)
if (sscanf(p, "%d.%d", &i, &j) != 2)
sscanf(p, "%d", &i);
abc_vers = (i << 16) + (j << 8) + k;
}
/* -- parse an ABC file -- */
struct abctune *abc_parse(char *file_api)
{
struct abctune *first_tune = NULL;
struct abctune *t, *last_tune;
/* saved global variables */
int g_abc_vers, g_ulen, g_microscale;
char *p;
char g_char_tb[128];
/* initialize */
file = file_api;
t = NULL;
abc_state = ABC_S_GLOBAL;
if (level_f)
level_f(0);
linenum = 0;
last_tune = NULL;
g_abc_vers = g_ulen = g_microscale = 0; /* (have gcc happy) */
/* scan till end of file */
for (;;) {
if ((p = get_line()) == NULL) {
if (abc_state == ABC_S_HEAD) {
syntax("Unexpected EOF in header definition",
p);
severity = 1;
}
if (t)
t->abc_vers = abc_vers;
if (abc_state != ABC_S_GLOBAL) {
abc_vers = g_abc_vers;
ulen = g_ulen;
microscale = g_microscale;
memcpy(char_tb, g_char_tb, sizeof g_char_tb);
}
break; /* done */
}
/* start a new tune if not done */
if (!t) {
if (*p == '\0')
continue;
t = alloc_f(sizeof *t);
memset(t, 0 , sizeof *t);
if (!last_tune)
first_tune = t;
else
last_tune->next = t;
last_tune = t;
p_micro = t->micro_tb;
meter = 0;
}
/* parse the music line */
switch (parse_line(t, p)) {
case 2: /* start of tune */
g_abc_vers = abc_vers;
g_ulen = ulen;
g_microscale = microscale;
memcpy(g_char_tb, char_tb, sizeof g_char_tb);
break;
case 1: /* end of tune */
t->abc_vers = abc_vers;
abc_state = ABC_S_GLOBAL;
t = NULL;
abc_vers = g_abc_vers;
ulen = g_ulen;
microscale = g_microscale;
memcpy(char_tb, g_char_tb, sizeof g_char_tb);
if (level_f)
level_f(0);
if (dc.n > 0)
syntax("Decoration without symbol", 0);
dc.n = dc.h = dc.s = 0;
break;
}
}
return first_tune;
}
/* -- cut off after % and remove trailing blanks -- */
static char *decomment_line(char *p)
{
char *q, c, *comment = NULL;
q = p;
for (;;) {
c = *p;
if (c == '\0')
break;
if (c == '\\') {
p++;
if (*p == '\0')
return 0;
p++;
continue;
}
if (c == '%') {
if (keep_comment) {
comment = p + 1;
break;
}
break;
}
if (c == '"') {
for (;;) {
p++;
if (*p == '\0')
break;
if (*p == '"' && p[-1] != '\\') {
p++;
break;
}
}
} else {
p++;
}
}
/* remove the trailing blanks */
while (p > q) {
c = *--p;
if (!isspace((unsigned char) c)) {
p[1] = '\0';
break;
}
}
return comment;
}
/* -- treat the broken rhythm '>' and '<' -- */
static void broken_rhythm(struct note *note,
int num) /* >0: do dot, <0: do half */
{
int l, m, n;
num *= 2;
if (num > 0) {
if (num == 6)
num = 8;
n = num * 2 - 1;
for (m = 0; m <= note->nhd; m++)
note->lens[m] = (note->lens[m] * n) / num;
} else {
n = -num;
if (n == 6)
n = 8;
for (m = 0; m <= note->nhd; m++)
note->lens[m] /= n;
}
l = note->lens[0];
for (m = 1; m <= note->nhd; m++)
if (note->lens[m] < l)
l = note->lens[m];
}
/* -- check for the '!' as end of line (ABC2Win) -- */
static int check_nl(char *p)
{
while (*p != '\0') {
switch (*p++) {
case '!':
return 0;
case '|':
case '[':
case ':':
case ']':
case ' ':
case '\t':
return 1;
}
}
return 1;
}
/* -- parse extra K: or V: definitions (clef, octave and microscale -- */
static char *parse_extra(char *p,
char **p_name,
char **p_middle,
char **p_lines,
char **p_scale,
char **p_octave)
{
for (;;) {
if (strncmp(p, "clef=", 5) == 0
|| strncmp(p, "bass", 4) == 0
|| strncmp(p, "treble", 6) == 0
|| strncmp(p, "alto", 4) == 0
|| strncmp(p, "tenor", 5) == 0
|| strncmp(p, "perc", 4) == 0) {
if (*p_name)
syntax("Double clef name", p);
*p_name = p;
} else if (strncmp(p, "microscale=", 11) == 0) {
int i;
i = atoi(p + 11);
if (i < 4 || i > 256)
syntax("Invalid value in microscale=", p);
else
microscale = i;
} else if (strncmp(p, "middle=", 7) == 0
|| strncmp(p, "m=", 2) == 0) {
if (*p_middle)
syntax("Double clef middle", p);
*p_middle = p + (p[1] == '=' ? 2 : 7);
} else if (strncmp(p, "octave=", 7) == 0) {
if (*p_octave)
syntax("Double octave=", p);
*p_octave = p + 7;
} else if (strncmp(p, "stafflines=", 11) == 0) {
if (*p_lines)
syntax("Double stafflines", p);
*p_lines = p + 11;
} else if (strncmp(p, "staffscale=", 11) == 0) {
if (*p_scale)
syntax("Double staffscale", p);
*p_scale = p + 11;
} else if (strncmp(p, "transpose=", 10) == 0
|| strncmp(p, "t=", 2) == 0) {
; /* ignored */
} else {
break;
}
while (!isspace((unsigned char) *p) && *p != '\0')
p++;
while (isspace((unsigned char) *p))
p++;
if (*p == '\0')
break;
}
return p;
}
/* -- parse a decoration 'xxx<decosep>' -- */
static char *get_deco(char *p,
unsigned char *p_deco)
{
char *q, sep, **t;
unsigned i, l;
*p_deco = 0;
q = p;
sep = q[-1];
if (char_tb[(unsigned char) sep] == CHAR_DECOS) {
if (sep == '+') {
if (*p == '+' && p[1] == '+')
p++; /* special case "+++" */
}
} else {
sep = '\0'; /* Barfly U: */
}
while (*p != sep) {
if (*p == '\0') {
syntax("Decoration not terminated", q);
return p;
}
p++;
}
l = p - q;
if (*p == sep)
p++;
for (i = 1, t = &deco_tb[1];
*t && i < 128;
i++, t++) {
if (strlen(*t) == l
&& strncmp(*t, q, l) == 0) {
*p_deco = i + 128;
return p;
}
}
/* new decoration */
if (i < 128) {
if (level_f && abc_state != ABC_S_GLOBAL)
level_f(0);
*t = alloc_f(l + 1);
if (level_f && abc_state != ABC_S_GLOBAL)
level_f(1);
memcpy(*t, q, l);
(*t)[l] = '\0';
*p_deco = i + 128;
} else {
syntax("Too many decoration types", q);
}
return p;
}
/* -- parse a list of accidentals (K:) -- */
static char *parse_acc(char *p,
struct abcsym *s)
{
int pit, len, acc, nostem;
unsigned nacc;
if (s->u.key.empty == 2)
syntax("cannot have 'none' and a list of accidentals", p);
nacc = 0;
for (;;) {
if (nacc >= sizeof s->u.key.pits) {
syntax("Too many accidentals", p);
break;
}
p = parse_basic_note(p, &pit, &len, &acc, &nostem);
s->u.key.pits[nacc] = pit;
s->u.key.accs[nacc++] = acc;
while (isspace((unsigned char) *p))
p++;
if (*p == '\0')
break;
if (*p != '^' && *p != '_' && *p != '=')
break;
}
s->u.key.microscale = microscale;
if (s->u.key.empty != 2)
s->u.key.nacc = nacc;
return p;
}
/* -- parse a clef (K: or V:) -- */
static void parse_clef(struct abcsym *s,
char *name,
char *middle,
char *lines,
char *scale)
{
int clef = -1;
int transpose = 0;
int clef_line = 2;
char *warn = NULL;
char str[80];
str[0] = '\0';
if (name && strncmp(name, "clef=", 5) == 0) {
name += 5;
switch (*name) {
case '\"':
name = get_str(str, name, sizeof str);
s->u.clef.name = alloc_f(strlen(str) + 1);
strcpy(s->u.clef.name, str);
clef = TREBLE;
break;
case 'g':
warn = name;
transpose = -7;
case 'G':
clef = TREBLE;
break;
case 'f':
warn = name;
transpose = -14;
clef = BASS;
clef_line = 4;
break;
case 'F':
if (name[1] == ',') /* abc2.1.1 clef=F == clef=F, */
transpose = -7;
clef = BASS;
clef_line = 4;
break;
case 'c':
warn = name;
transpose = -7;
case 'C':
clef = ALTO;
clef_line = 3;
break;
case 'P':
clef = PERC;
break;
}
if (clef >= 0) {
name++;
if (*name == ',' || *name== '\'')
warn = name;
while (*name == ',') {
transpose += 7;
name++;
}
while (*name == '\'') {
transpose -= 7;
name++;
}
}
}
if (name && clef < 0) {
if (!strncmp(name, "bass", 4)) {
clef = BASS;
clef_line = 4;
s->u.clef.check_pitch = 1;
name += 4;
} else if (!strncmp(name, "treble", 6)) {
clef = TREBLE;
name += 6;
} else if (!strncmp(name, "alto", 4)
|| !strncmp(name, "tenor", 5)) {
clef = ALTO;
clef_line = *name == 'a' ? 3 : 4;
s->u.clef.check_pitch = 1;
if (*name == 'a')
name += 4;
else
name += 5;
} else if (!strncmp(name, "perc", 4)) {
clef = PERC;
name += 4;
} else if (strncmp(name, "none", 4) == 0) {
clef = TREBLE;
s->u.clef.invis = 1;
s->flags |= ABC_F_INVIS;
name += 4;
} else {
syntax("Unknown clef", name);
}
}
if (clef >= 0) {
switch (*name) {
case '1':
case '2':
case '3':
case '4':
case '5':
clef_line = *name++ - '0';
break;
}
if (name[1] == '8') {
switch (*name) {
case '^':
transpose -= 7;
case '+':
s->u.clef.octave = 1;
break;
case '_':
transpose += 7;
case '-':
s->u.clef.octave = -1;
break;
}
}
}
if (middle) {
int pit, len, acc, nostem, l;
static const char line_tb[7] =
{ALTO, TREBLE, ALTO, BASS, ALTO, BASS, ALTO};
warn = middle;
/* 'middle=<note pitch>' */
parse_basic_note(middle, &pit, &len, &acc, &nostem);
if (clef < 0)
clef = line_tb[(pit + 7) % 7];
switch (clef) {
default:
l = 20 + 4;
break;
case ALTO:
l = 16 + 4;
break;
case BASS:
l = 12 + 4;
break;
}
clef_line = (l - pit + 28) % 7;
if (clef_line & 1) {
syntax("Bad 'middle' value for the clef", middle);
pit++;
}
clef_line = clef_line / 2 + 1;
transpose = l - (clef_line - 1) * 2 - pit;
s->u.clef.check_pitch = 0;
}
s->u.clef.type = clef;
s->u.clef.line = clef_line;
s->u.clef.transpose = transpose;
s->u.clef.stafflines = -1;
s->u.clef.staffscale = 0;
if (lines) {
int l;
l = atoi(lines);
if ((unsigned) l < 10)
s->u.clef.stafflines = l;
else
syntax("Bad value of stafflines", lines);
}
if (scale) {
float sc;
sc = atof(scale);
if (sc >= 0.5 && sc <= 3)
s->u.clef.staffscale = sc;
else
syntax("Bad value of staffscale", scale);
}
if (warn) {
int sev_sav;
sev_sav = severity;
syntax("Warning: Deprecated or non-standard item", warn);
severity = sev_sav;
}
}
/* get the octave= value */
static int parse_octave(char *p)
{
int oct;
if (p) {
oct = 1;
if (*p == '-') {
oct = -1;
p++;
}
if (*p >= '0' && *p <= '4')
return oct * (*p - '0');
syntax("Bad octave value", p);
}
return NO_OCTAVE;
}
/* -- parse a 'K:' -- */
static void parse_key(char *p,
struct abcsym *s)
{
int sf, mode, key_end;
char *clef_name, *clef_middle, *clef_lines, *clef_scale;
char *p_octave;
if (*p == '\0') {
s->u.key.empty = 2;
return;
}
sf = 0;
mode = MAJOR;
key_end = 0;
switch (*p++) {
case 'F': sf = -1; break;
case 'B': sf++;
case 'E': sf++;
case 'A': sf++;
case 'D': sf++;
case 'G': sf++;
case 'C': break;
case 'H':
if (*p == 'P') {
mode = BAGPIPE;
p++;
} else if (*p == 'p') {
mode = BAGPIPE + 1;
sf = 2;
p++;
} else {
syntax("Unknown bagpipe-like key", p);
}
break;
case 'n':
if (strncmp(p, "one", 3) == 0) {
s->u.key.empty = 2;
p += 3;
while (isspace((unsigned char) *p))
p++;
if (*p == '\0')
return;
key_end = 1;
break;
}
// fall thru
default:
p--;
key_end = 1;
break;
}
if (!key_end) {
if (*p == '#') {
sf += 7;
p++;
} else if (*p == 'b') {
sf -= 7;
p++;
}
while (isspace((unsigned char) *p))
p++;
switch (*p) {
case 'a':
case 'A':
if (strncasecmp(p, "aeo", 3) == 0) {
sf -= 3;
mode = 5;
break;
}
goto unk;
case 'd':
case 'D':
if (strncasecmp(p, "dor", 3) == 0) {
sf -= 2;
mode = 1;
break;
}
goto unk;
case 'i':
case 'I':
if (strncasecmp(p, "ion", 3) == 0) {
mode = 0;
break;
}
goto unk;
case 'l':
case 'L':
if (strncasecmp(p, "loc", 3) == 0) {
sf -= 5;
mode = 6;
break;
}
if (strncasecmp(p, "lyd", 3) == 0) {
sf += 1;
mode = 3;
break;
}
goto unk;
case 'm':
case 'M':
if (strncasecmp(p, "maj", 3) == 0)
break;
if (strncasecmp(p, "mix", 3) == 0) {
sf -= 1;
mode = 4;
break;
}
if (strncasecmp(p, "min", 3) == 0
|| !isalpha((unsigned char) p[1])) { /* 'm' alone */
sf -= 3;
mode = MINOR;
break;
}
goto unk;
case 'p':
case 'P':
if (strncasecmp(p, "phr", 3) == 0) {
sf -= 4;
mode = 2;
break;
}
goto unk;
default:
unk:
key_end = 1;
break;
}
if (!key_end) {
while (isalpha((unsigned char) *p))
p++;
while (isspace((unsigned char) *p))
p++;
}
// [exp] accidentals
if (strncmp(p, "exp ", 4) == 0) {
p += 4;
while (isspace((unsigned char) *p))
p++;
if (*p == '\0')
syntax("no accidental after 'exp'", p);
s->u.key.exp = 1;
}
if (s->u.key.exp && strncmp(p, "none", 4) == 0) {
sf = 0;
p += 4;
while (isspace((unsigned char) *p))
p++;
} else switch (*p) {
case '^':