4 * Lexical scanning of configuration files, used by parsers.
12 Copyright (C) 2000-2005 Kern Sibbald
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
34 /* Lex get_char() return values */
41 /* Tokens returned by get_token() */
45 #define T_IDENTIFIER 104
46 #define T_UNQUOTED_STRING 105
47 #define T_QUOTED_STRING 106
48 #define T_BOB 108 /* begin block */
49 #define T_EOB 109 /* end of block */
55 * The following will be returned only if
56 * the appropriate expect flag has been set
58 #define T_SKIP_EOL 113 /* scan through EOLs */
59 #define T_PINT32 114 /* positive integer */
60 #define T_PINT32_RANGE 115 /* positive integer range */
61 #define T_INT32 116 /* integer */
62 #define T_INT64 117 /* 64 bit integer */
63 #define T_NAME 118 /* name max 128 chars */
64 #define T_STRING 119 /* string */
66 #define T_ALL 0 /* no expectations */
80 /* Lex scan options */
81 #define LOPT_NO_IDENT 0x1 /* No Identifiers -- use string */
82 #define LOPT_STRING 0x2 /* Force scan for string */
85 typedef struct s_lex_context {
86 struct s_lex_context *next; /* pointer to next lexical context */
87 int options; /* scan options */
88 char *fname; /* filename */
89 FILE *fd; /* file descriptor */
90 char line[MAXSTRING]; /* input line */
91 char str[MAXSTRING]; /* string being scanned */
92 int str_len; /* length of string */
93 int line_no; /* file line number */
94 int col_no; /* char position on line */
95 int begin_line_no; /* line no of beginning of string */
96 enum lex_state state; /* lex_state variable */
97 int ch; /* last char/L_VAL returned by get_char */
100 uint32_t pint32_val2;
103 void (*scan_error)(const char *file, int line, struct s_lex_context *lc, const char *msg, ...);
104 void *caller_ctx; /* caller private data */
107 typedef void (LEX_ERROR_HANDLER)(const char *file, int line, LEX *lc, const char *msg, ...);
109 /* Lexical scanning errors in parsing conf files */
110 #define scan_err0(lc, msg) lc->scan_error(__FILE__, __LINE__, lc, msg)
111 #define scan_err1(lc, msg, a1) lc->scan_error(__FILE__, __LINE__, lc, msg, a1)
112 #define scan_err2(lc, msg, a1, a2) lc->scan_error(__FILE__, __LINE__, lc, msg, a1, a2)
113 #define scan_err3(lc, msg, a1, a2, a3) lc->scan_error(__FILE__, __LINE__, lc, msg, a1, a2, a3)
114 #define scan_err4(lc, msg, a1, a2, a3, a4) lc->scan_error(__FILE__, __LINE__, lc, msg, a1, a2, a3, a4)
115 #define scan_err5(lc, msg, a1, a2, a3, a4, a5) lc->scan_error(__FILE__, __LINE__, lc, msg, a1, a2, a3, a4, a5)
116 #define scan_err6(lc, msg, a1, a2, a3, a4, a5, a6) lc->scan_error(__FILE__, __LINE__, lc, msg, a1, a2, a3, a4, a5, a6)
118 void scan_to_eol(LEX *lc);
119 int scan_to_next_not_eol(LEX * lc);