1 /*
2 * SysDB - src/tools/sysdb/scanner.l
3 * Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 %{
30 /*
31 * This is a simplified version of frontend/scanner.l. The only purpose is to
32 * find queries (terminated by semicolon).
33 */
35 #if HAVE_CONFIG_H
36 # include "config.h"
37 #endif /* HAVE_CONFIG_H */
39 #include "tools/sysdb/input.h"
41 #include <string.h>
43 #ifdef YY_INPUT
44 # undef YY_INPUT
45 #endif
46 #define YY_INPUT(buf, result, max_size) \
47 sdb_input_readline((buf), &(result), (max_size))
49 #define APPEND() \
50 do { \
51 sysdb_input->query_len += strlen(yytext); \
52 } while (0)
54 %}
56 %option interactive
57 %option 8bit
58 %option yylineno
59 %option nodefault
60 %option noyywrap
61 %option verbose
62 %option warn
64 %x CSC
66 whitespace ([ \t\n\r\f]+)
67 simple_comment ("--"[^\n\r]*)
69 /*
70 * C style comments
71 */
72 csc_start \/\*
73 csc_inside ([^*/]+|[^*]\/|\*[^/])
74 csc_end \*\/
76 identifier ([A-Za-z_][A-Za-z_0-9$]*)
78 %%
80 {whitespace} { APPEND(); }
81 {simple_comment} { APPEND(); }
83 {csc_start} { APPEND(); BEGIN(CSC); }
84 <CSC>{csc_inside} { APPEND(); }
85 <CSC>{csc_end} { APPEND(); BEGIN(INITIAL); }
86 <CSC><<EOF>> { return -1; }
88 {identifier} { APPEND(); }
90 /*
91 * The following rules are specific to the command line tool.
92 */
94 ";" { APPEND(); sdb_input_exec_query(); }
96 . { APPEND(); }
98 %%
100 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */