/* Validate a null-terminated UTF-8 string. */
static bool validate(const char *str)
{
std::size_t len = 0;
for (; *str != 0; str += len)
{
len = validate_char(str);
if (len == 0)
return false;
}
return true;
}
static int read_char(const char *s, uchar_t &out)
{
const unsigned char *c = (const unsigned char*) s;
assert(validate_char(s));
if (c[0] <= 0x7F)
{
/* 00..7F */
out = c[0];
return 1;
}
else if (c[0] <= 0xDF)
{
/* C2..DF (unless input is invalid) */
out = ((uchar_t)c[0] & 0x1F) << 6 |
((uchar_t)c[1] & 0x3F);
return 2;
}
else if (c[0] <= 0xEF)
{
/* E0..EF */
out = ((uchar_t)c[0] & 0xF) << 12 |
((uchar_t)c[1] & 0x3F) << 6 |
((uchar_t)c[2] & 0x3F);
return 3;
}
else
{
/* F0..F4 (unless input is invalid) */
out = ((uchar_t)c[0] & 0x7) << 18 |
((uchar_t)c[1] & 0x3F) << 12 |
((uchar_t)c[2] & 0x3F) << 6 |
((uchar_t)c[3] & 0x3F);
return 4;
}
}
void task_user_cli( ) {
char c;
char cbuff_storage[CONFIG_CLI_MAX_CHARACTERS];
struct char_buffer cbuff;
cbuffer_init( &cbuff, cbuff_storage, CONFIG_CLI_MAX_CHARACTERS );
//used for parsing out the first token
char first_token[CONFIG_CLI_MAX_CHARACTERS];
//keep track of which track we are
int track = TRACK_UNINITIALIZED;
//Copy of track data
struct track_node track_data[TRACK_MAX];
//for complex prints
struct print_buffer pbuff;
ap_init_buff( &pbuff );
//go to the CLI location, and save it
Printf( COM2, "\x1B[24;20f\x1B[s" );
while( 1 ) {
ap_init_buff( &pbuff );
c = Getc( COM2 );
//catch special characters
switch( c ) {
case CHAR_GRAVE_ACCENT:
CommandOutput( "[CLI] ABORT!" );
Abort( );
break;
case CHAR_BACKSPACE:
if( cbuff.state == CBUFF_EMPTY ) {
break;
} //do nothing if empty
//remove the last character
cbuffer_pop_last( &cbuff );
//move the cursor back one space and delete the character
Printf( COM2, "\x1B[u\x1B[D\x1B[K\x1B[s" );
break;
case CHAR_PERIOD:
TabRight( );
break;
case CHAR_COMMA:
TabLeft( );
break;
case CHAR_NEWLINE:
case CHAR_ENTER:
if( cbuff.state == CBUFF_EMPTY ) {
break;
} //do nothing if empty
//we need to parse, get the first token
if( next_token( &cbuff, first_token ) == 0 ) {
break;
} //we were just spaces
//now check which command the first token matches
if( strcmp( first_token, "tr" ) == 0 ) {
command_tr( &cbuff );
} else if( strcmp( first_token, "q" ) == 0 ) {
command_q( &cbuff );
} else if( strcmp( first_token, "game" ) == 0 ) {
command_game( &cbuff );
} else if( strcmp( first_token, "wh" ) == 0 ) {
command_wh( &cbuff );
} else if( strcmp( first_token, "st" ) == 0 ) {
command_st( &cbuff );
} else if( strcmp( first_token, "sw" ) == 0 ) {
command_sw( &cbuff );
} else if( strcmp( first_token, "swa" ) == 0 ) {
command_swa( &cbuff );
} else if( strcmp( first_token, "rv" ) == 0 ) {
command_rv( &cbuff );
} else if( strcmp( first_token, "add" ) == 0 ) {
command_add( &cbuff, track );
} else if( strcmp( first_token, "echo" ) == 0 ) {
command_echo( &cbuff );
} else if( strcmp( first_token, "delay" ) == 0 ) {
command_delay( &cbuff );
} else if( strcmp( first_token, "beep" ) == 0 ) {
command_beep( &cbuff );
} else if( strcmp( first_token, "looptest" ) == 0 ) {
command_looptest( &cbuff );
} else if( strcmp( first_token, "zombtest" ) == 0 ) {
command_zombtest( &cbuff );
} else if( strcmp( first_token, "track" ) == 0 ) {
command_track( &cbuff, &track, track_data );
} else if( strcmp( first_token, "sos" ) == 0 ) {
command_sos( &cbuff );
} else if( strcmp( first_token, "calibrationout" ) == 0 ) {
command_calibrationout( &cbuff );
} else if( strcmp( first_token, "route" ) == 0 ) {
command_route( &cbuff, track_data );
} else if( strcmp( first_token, "tdir" ) == 0 ) {
command_tdir( &cbuff );
} else if( strcmp( first_token, "resv" ) == 0 ) {
command_resv( &cbuff, track_data );
} else if( strcmp( first_token, "free" ) == 0 ) {
command_free( &cbuff, track_data );
} else {
CommandOutput( "Invalid Command" );
}
//empty the command buffer
cbuffer_empty( &cbuff );
//clear the command line
Printf( COM2, "\x1B[24;20f\x1B[K\x1B[s" );
break;
default:
//if it is not a valid character ignore it
if( !validate_char( &c ) ) {
break;
}
//if we are full, ignore the character
if( cbuff.state == CBUFF_FULL ) {
break;
}
//we have a valid character buffer and print it
cbuffer_push_char( &cbuff, c );
Printf( COM2, "\x1B[u%c\x1B[s", c );
break;
}
//re-initialize the parse
first_token[0] = '\0';
}
}
