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 #include "tools/sysdb/input.h"
36 #include "tools/sysdb/command.h"
38 #include <string.h>
40 #ifdef YY_INPUT
41 # undef YY_INPUT
42 #endif
43 #define YY_INPUT(buf, result, max_size) \
44 sdb_input_readline(sdb_input, (buf), &(result), (max_size))
46 #define APPEND() \
47 do { \
48 sdb_input->query_len += strlen(yytext); \
49 } while (0)
51 static sdb_input_t *sdb_input;
53 %}
55 %option interactive
56 %option 8bit
57 %option yylineno
58 %option nodefault
59 %option noyywrap
60 %option verbose
61 %option warn
63 %x CSC
65 whitespace ([ \t\n\r\f]+)
66 simple_comment ("--"[^\n\r]*)
68 /*
69 * C style comments
70 */
71 csc_start \/\*
72 csc_inside ([^*/]+|[^*]\/|\*[^/])
73 csc_end \*\/
75 identifier ([A-Za-z_][A-Za-z_0-9$]*)
77 %%
79 {whitespace} { APPEND(); }
80 {simple_comment} { APPEND(); }
82 {csc_start} { APPEND(); BEGIN(CSC); }
83 <CSC>{csc_inside} { APPEND(); }
84 <CSC>{csc_end} { APPEND(); BEGIN(INITIAL); }
85 <CSC><<EOF>> { return -1; }
87 {identifier} { APPEND(); }
89 /*
90 * The following rules are specific to the command line tool.
91 */
93 ";" { APPEND(); sdb_command_exec(sdb_input); }
95 . { APPEND(); }
97 %%
99 void
100 sdb_input_set(sdb_input_t *new_input)
101 {
102 sdb_input = new_input;
103 } /* sdb_input_set */
105 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */