/////////////////////////////////////
//
// Identifiers
//
int processChar( StatefulString *ss ) {
int length = isUnicodeSequenceStart( ss, 0 );
if ( length ) {
for ( int i = 0; i < length; i++ ) {
ss_getchar( ss );
}
return length;
} else {
ss_getchar( ss );
return 1;
}
}
int main()
{
RS232_INFO info;
char str[10000];
printf("Enter port [/dev/ttyS0]: ");
fgets(str, sizeof(str), stdin);
if (strchr(str, '\n'))
*strchr(str, '\n') = 0;
if (!str[0])
strcpy(str, "/dev/ttyS0");
info.fd = rs232_open(str, 9600, 'N', 8, 1, 0);
if (info.fd < 0) {
printf("Cannot open ttyS0\n");
return 0;
}
/* turn on debugging, will go to rs232.log */
rs232(CMD_DEBUG, TRUE);
printf("Connected to ttyS0, exit with <ESC>\n");
do {
memset(str, 0, sizeof(str));
str[0] = ss_getchar(0);
if (str[0] == 27)
break;
if (str[0] > 0)
rs232_puts(&info, str);
rs232_gets(&info, str, sizeof(str), "", 10);
printf(str);
fflush(stdout);
} while (1);
ss_getchar(TRUE);
rs232_exit(&info);
return 1;
}
/////////////////////////////////////
//
// Strings
//
Token *parseString( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isStringStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
wchar_t temp;
Token *token;
length = 0;
pos1 = ss->next_position;
wchar_t quote = ss_getchar( ss );
start = ss->next_index; // Exclude the quotes
while (
( temp = ss_getchar( ss ) ) != WEOF &&
!isNewline( temp ) &&
temp != quote
) {
length++;
if ( temp == L'\\' ) {
ss_getchar( ss );
length++;
}
}
pos2 = ss->next_position;
token = token_new( ss_substr( ss, start, length ), length, STRING, pos1, pos2 );
wchar_t *error = malloc( 201 * sizeof( wchar_t ) );
error[ 0 ] = L'\0';
if ( temp == WEOF ) {
swprintf( error, 200, L"Encountered end-of-file while parsing a string. Looks like a `%C` is missing.", quote );
} else if ( isNewline( temp ) ) {
error = L"Encountered a newline while parsing a string. Strings can only contain newlines if they're properly escaped (e.g. `\\[\\n]`)";
}
if ( wcscmp( error, L"" ) != 0 ) {
tokenizer_error( tokenizer, error, token );
} else {
free( error );
}
return token;
}
Token *parseNumber( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isNumberStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
start = ss->next_index;
length = 0;
pos1 = ss->next_position;
TokenType type = NUMBER;
int isFloat = 0;
wchar_t temp;
while (
isNumeric( ss_peek( ss ) ) ||
( ss_peek( ss ) == L'-' && length == 0 ) ||
( ss_peek( ss ) == L'.' && !isFloat )
) {
temp = ss_getchar( ss );
if ( temp == L'.' ) {
isFloat = 1;
}
length++;
}
// Is the number followed by a percentage?
if ( ss_peek( ss ) == L'%' ) {
ss_getchar( ss );
length++;
type = PERCENTAGE;
}
// Is the number followed by a dimension?
else if ( isIdentifierStart( ss, 0 ) ) {
while ( isNameChar( ss_peek( ss ) ) ) {
ss_getchar( ss );
length++;
}
type = DIMENSION;
}
pos2 = ss->next_position;
return token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
}
/////////////////////////////////////
//
// #keyword
//
Token *parseHashkeyword( Tokenizer *tokenizer ) {
assert( isHashkeywordStart( tokenizer->ss_, 0 ) );
StatefulStringPosition *start = malloc( sizeof( StatefulStringPosition ) );
memcpy( start, &( ( tokenizer->ss_ )->next_position ), sizeof( StatefulStringPosition ) );
ss_getchar( tokenizer->ss_ ); // Throw away the `#`
Token *t = parseName( tokenizer );
t->type = HASHKEYWORD;
free( t->start );
t->start = start;
return t;
}
///////////////////////////////////////////////////////////////////////////
//
// Parsing Functions
//
/////////////////////////////////////
//
// Whitespace
//
Token *parseWhitespace( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isWhitespaceStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
start = ss->next_index;
length = 0;
pos1 = ss->next_position;
while ( isWhitespace( ss_peek( ss ) ) ) {
ss_getchar( ss );
length++;
}
pos2 = ss->next_position;
return token_new( ss_substr( ss, start, length ), length, WHITESPACE, pos1, pos2 );
}
Token *parseName( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isNameChar( ss_peek( ss ) ) || isUnicodeSequenceStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
start = ss->next_index;
length = 0;
pos1 = ss->next_position;
while ( isNameChar( ss_peek( ss ) ) || isUnicodeSequenceStart( ss, 0 ) ) {
length += processChar( ss );
}
if ( ss_peek( ss ) == L'(' ) {
ss_getchar( ss );
length++;
}
pos2 = ss->next_position;
return token_new( ss_substr( ss, start, length ), length, NAME, pos1, pos2 );
}
Token *parseComment( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isCommentStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
Token *token;
wchar_t *error = malloc( 201 * sizeof( wchar_t ) );
error[ 0 ] = L'\0';
start = ss->next_index;
pos1 = ss->next_position;
length = 2;
TokenType type = COMMENT;
ss_getchar( ss ); ss_getchar( ss ); // Throw away `/*`
while (
ss_peek( ss ) != WEOF &&
(
ss_peek( ss ) != L'*' ||
ss_peekx( ss, 1 ) != L'/'
)
) {
length++;
if ( ss_getchar( ss ) == L'\\' ) {
ss_getchar( ss );
length++;
}
}
if ( ss_peek( ss ) == WEOF ) {
swprintf( error, 200, L"Encountered end-of-file while parsing a comment. Probably a forgotten `*/`." );
} else {
ss_getchar( ss ); ss_getchar( ss ); // Throw away `*/`
length += 2;
}
// Return the token.
pos2 = ss->next_position;
token = token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
if ( wcscmp( error, L"" ) != 0 ) {
tokenizer_error( tokenizer, error, token );
} else {
free( error );
}
return token;
}
Token *parseSGMLComment( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isCDOStart( ss, 0 ) || isCDCStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
start = ss->next_index;
pos1 = ss->next_position;
length = 4;
TokenType type = SGML_COMMENT_OPEN;
if ( isCDCStart( ss, 0 ) ) {
type = SGML_COMMENT_CLOSE;
length = 3;
}
for ( int i = 0; i<length; i++ ) {
ss_getchar( ss );
}
pos2 = ss->next_position;
return token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
}
/////////////////////////////////////
//
// Operators, et al.
//
Token *parseEverythingElse( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
int start, length;
StatefulStringPosition pos1, pos2;
start = ss->next_index;
pos1 = ss->next_position;
TokenType type = DELIM;
length = 1;
wchar_t temp = ss_getchar( ss );
if (
( temp== L'~' || temp == L'|' || temp == L'*' || temp == L'^' || temp == L'$' ) &&
ss_peek( ss ) == L'='
) {
ss_getchar( ss );
length++;
}
if ( length == 1 ) {
switch ( temp ) {
case L'{':
type = CURLY_BRACE_OPEN;
break;
case L'}':
type = CURLY_BRACE_CLOSE;
break;
case L'[':
type = SQUARE_BRACE_OPEN;
break;
case L']':
type = SQUARE_BRACE_CLOSE;
break;
case L'(':
type = PAREN_OPEN;
break;
case L')':
type = PAREN_CLOSE;
break;
case L':':
type = COLON;
break;
case L';':
type = SEMICOLON;
break;
case L'@':
type = AT;
break;
case L'#':
type = HASH;
break;
case L'%':
type = PERCENT;
break;
case L'.':
type = DOT;
break;
}
} else if ( length == 2 ) {
switch ( temp ) {
case L'~':
type = INCLUDES;
break;
case L'|':
type = DASHMATCH;
break;
case L'^':
type = PREFIXMATCH;
break;
case L'$':
type = SUFFIXMATCH;
break;
case L'*':
type = SUBSTRINGMATCH;
break;
}
}
pos2 = ss->next_position;
return token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
}
/////////////////////////////////////
//
// Url
//
Token *parseUrl( Tokenizer *tokenizer ) {
StatefulString *ss = tokenizer->ss_;
assert( isUrlStart( ss, 0 ) );
int start, length;
StatefulStringPosition pos1, pos2;
Token *token;
wchar_t *error = malloc( 201 * sizeof( wchar_t ) );
error[ 0 ] = L'\0';
start = ss->next_index;
pos1 = ss->next_position;
TokenType type = URL;
// Throw away `url(`
for ( int i = 0; i<4; i++ ) {
ss_getchar( ss );
}
length = 4;
// Throw away leading whitespace
while ( isWhitespaceStart( ss, 0 ) ) {
ss_getchar( ss );
length++;
}
// Process the url
if ( isStringStart( ss, 0 ) ) {
token = parseString( tokenizer );
length += token->length + 2; // +2 for the quotes
if ( token->error != NULL ) {
length -= 1; // Error'd strings don't have a trailing quote
pos2 = ss->next_position;
Token *t = token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
t->error = token->error;
( token->error )->token = t;
free( token );
return t;
} else {
free( token );
}
} else if ( isUrlChar( ss_peek( ss ) ) || isUnicodeSequenceStart( ss, 0 ) ) {
while ( isUrlChar( ss_peek( ss ) ) || isUnicodeSequenceStart( ss, 0 ) ) {
length += processChar( ss );
}
} else {
// ERROR:
if ( ss_peek( ss ) == WEOF ) {
swprintf( error, 200, L"Encountered end-of-file while parsing a URL." );
} else {
swprintf( error, 200, L"Encountered an invalid character (`%C`) while parsing a URL.", ss_peek( ss ) );
}
}
// Throw away trailing whitespace
while ( isWhitespaceStart( ss, 0 ) ) {
ss_getchar( ss );
length++;
}
// Grab the trailing `)`
if ( ss_peek( ss ) == L')' ) {
ss_getchar( ss );
length++;
} else {
// ERROR:
if ( ss_peek( ss ) == WEOF ) {
swprintf( error, 200, L"Encountered end-of-file while parsing a URL. Expected a `)`." );
} else {
swprintf( error, 200, L"Encountered an invalid character (`%C`) while parsing a URL. Expected a `)`. Perhaps a typo?", ss_peek( ss ) );
}
}
// Return the token.
pos2 = ss->next_position;
token = token_new( ss_substr( ss, start, length ), length, type, pos1, pos2 );
if ( wcscmp( error, L"" ) != 0 ) {
tokenizer_error( tokenizer, error, token );
} else {
free( error );
}
return token;
}
int main(int argc, char *argv[])
{
BOOL daemon = FALSE;
INT status, i, ch;
char host_name[HOST_NAME_LENGTH];
char exp_name[NAME_LENGTH];
char *speech_program = SPEECH_PROGRAM;
/* get default from environment */
cm_get_environment(host_name, sizeof(host_name), exp_name, sizeof(exp_name));
#ifdef OS_DARWIN
strlcpy(mtTalkStr, "afplay $MIDASSYS/utils/notify.wav", sizeof(mtTalkStr));
strlcpy(mtUserStr, "afplay $MIDASSYS/utils/notify.wav", sizeof(mtTalkStr));
#endif
/* parse command line parameters */
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-' && argv[i][1] == 'D')
daemon = TRUE;
else if (argv[i][0] == '-') {
if (i + 1 >= argc || argv[i + 1][0] == '-')
goto usage;
if (argv[i][1] == 'e')
strcpy(exp_name, argv[++i]);
else if (argv[i][1] == 'h')
strcpy(host_name, argv[++i]);
else if (argv[i][1] == 'c')
speech_program = argv[++i];
else if (argv[i][1] == 't')
strcpy(mtTalkStr, argv[++i]);
else if (argv[i][1] == 'u')
strcpy(mtUserStr, argv[++i]);
else if (argv[i][1] == 's')
shutupTime = atoi(argv[++i]);
else {
usage:
printf
("usage: mlxspeaker [-h Hostname] [-e Experiment] [-c command] [-D] daemon\n");
printf(" [-t mt_talk] Specify the mt_talk alert command\n");
printf(" [-u mt_user] Specify the mt_user alert command\n");
printf(" [-s shut up time] Specify the min time interval between alert [s]\n");
printf(" The -t & -u switch require a command equivalent to:\n");
printf(" '-t play --volume=0.3 file.wav'\n");
printf(" [-c command] Used to start the speech synthesizer,\n");
printf(" which should read text from it's standard input.\n");
printf(" eg: mlxspeaker -c 'festival --tts -'\n\n");
return 0;
}
}
}
if (daemon) {
printf("Becoming a daemon...\n");
ss_daemon_init(FALSE);
}
/* Handle SIGPIPE signals generated from errors on the pipe */
signal(SIGPIPE, sigpipehandler);
signal(SIGINT, siginthandler);
fp = popen(speech_program, "w");
if (fp == NULL) {
cm_msg(MERROR, "Speaker", "Unable to start \"%s\": %s\n",
speech_program, strerror(errno));
cm_disconnect_experiment();
exit(2);
}
/* now connect to server */
status = cm_connect_experiment(host_name, exp_name, "Speaker", NULL);
if (status != CM_SUCCESS)
return 1;
cm_msg_register(receive_message);
printf("Midas Message Speaker connected to %s. Press \"!\" to exit.\n", host_name[0] ? host_name : "local host");
/* initialize terminal */
ss_getchar(0);
do {
status = cm_yield(1000);
while (ss_kbhit()) {
ch = ss_getchar(0);
if (ch == -1)
ch = getchar();
if (ch == '!')
status = RPC_SHUTDOWN;
}
} while (status != SS_ABORT && status != RPC_SHUTDOWN);
/* reset terminal */
ss_getchar(TRUE);
pclose(fp);
cm_disconnect_experiment();
return 1;
}
