/[svn]/linuxsampler/trunk/src/network/lscp.l
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Contents of /linuxsampler/trunk/src/network/lscp.l

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Revision 35 - (show annotations) (download)
Fri Mar 5 13:46:15 2004 UTC (16 years ago) by schoenebeck
File size: 4246 byte(s)
* implemented parser for the LinuxSampler control protocol (LSCP) by using
  flex / bison (where src/network/lscp.l is the input file for lex / flex
  and src/network/lscp.y is the input file for yacc / bison), parser and
  scanner can be regenerated by 'make parser'
* implemented LSCP network server (only single threaded so far), LSCP
  server will be launched if LinuxSampler was started with "--server" flag,
  implemented the following LSCP commands so far: "LOAD INSTRUMENT", "GET
  CHANNEL VOICE_COUNT", "GET CHANNEL STREAM_COUNT", "GET CHANNEL
  BUFFER_FILL", "SET CHANNEL VOLUME" and "RESET CHANNEL"
* disk thread now started within the engine

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck *
6 * *
7 * This program is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
11 * *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
16 * *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the Free Software *
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20 * MA 02111-1307 USA *
21 ***************************************************************************/
22
23 %{
24
25 #include "lscpparser.h"
26 #include "lscpsymbols.h"
27
28 /// handle for a client connection (FIXME: doesn't work for more than one network connections of course)
29 int hSession;
30
31 %}
32
33 %option reentrant
34
35 DIGIT [0-9]
36
37 %%
38
39 " " { return SP; }
40 \n { return LF; }
41 \r { return CR; }
42 ("+"|"-")?{DIGIT}+"."{DIGIT}+ { yylval->Dotnum = atof(yytext); return DOTNUM; }
43 ADD { return ADD; }
44 GET { return GET; }
45 LOAD { return LOAD; }
46 REMOVE { return REMOVE; }
47 SET { return SET; }
48 SUBSCRIBE { return SUBSCRIBE; }
49 UNSUBSCRIBE { return UNSUBSCRIBE; }
50 CHANNEL { return CHANNEL; }
51 NOTIFICATION { return NOTIFICATION; }
52 AVAILABLE_ENGINES { return AVAILABLE_ENGINES; }
53 CHANNELS { return CHANNELS; }
54 INFO { return INFO; }
55 BUFFER_FILL { return BUFFER_FILL; }
56 STREAM_COUNT { return STREAM_COUNT; }
57 VOICE_COUNT { return VOICE_COUNT; }
58 INSTRUMENT { return INSTRUMENT; }
59 ENGINE { return ENGINE; }
60 AUDIO_OUTPUT_CHANNEL { return AUDIO_OUTPUT_CHANNEL; }
61 AUDIO_OUTPUT_TYPE { return AUDIO_OUTPUT_TYPE; }
62 MIDI_INPUT_PORT { return MIDI_INPUT_PORT; }
63 MIDI_INPUT_CHANNEL { return MIDI_INPUT_CHANNEL; }
64 MIDI_INPUT_TYPE { return MIDI_INPUT_TYPE; }
65 VOLUME { return VOLUME; }
66 BYTES { return BYTES; }
67 PERCENTAGE { return PERCENTAGE; }
68 ALSA { return ALSA; }
69 JACK { return JACK; }
70 RESET { return RESET; }
71 QUIT { return QUIT; }
72 0|([1-9]{DIGIT}*) { yylval->Number = atoi(yytext); return NUMBER; }
73 . { yylval->Char = yytext[0]; return CHAR; }
74
75 %%
76
77 /**
78 * We provide our own version of yywrap() so we don't have to link against
79 * the lex library.
80 */
81 int yywrap(yyscan_t yyscanner) {
82 return 1; // continue scanning
83 }

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