3 * Copyright (c) 1980, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * @(#)lang.l 8.1 (Berkeley) 6/6/93
44 * Data for returning to previous files from include files.
47 struct incl *in_prev; /* previous includes in effect, if any */
48 YY_BUFFER_STATE in_buf; /* previous lex state */
49 const char *in_fname; /* previous file name */
50 int in_lineno; /* previous line number */
51 int in_ateof; /* token to insert at EOF */
53 static struct incl *inclp;
54 static const char *lastfile;
68 { "devices", DEVICE },
69 { "nodevice", NODEVICE },
70 { "nodevices", NODEVICE },
74 { "machine", ARCH }, /* MACHINE is defined in /sys/param.h */
75 { "makeoption", MAKEOPTIONS },
76 { "makeoptions", MAKEOPTIONS },
77 { "nomakeoption", NOMAKEOPTION },
78 { "nomakeoptions", NOMAKEOPTION },
79 { "maxusers", MAXUSERS },
80 { "profile", PROFILE },
81 { "option", OPTIONS },
82 { "options", OPTIONS },
83 { "nooption", NOOPTION },
84 { "nooptions", NOOPTION },
85 { "include", INCLUDE },
91 static int endinclude(void);
92 int include(const char *, int);
93 int kw_lookup(char *);
94 unsigned int octal(const char *);
95 unsigned int hex(const char *);
96 int yyerror(const char *);
99 ID [A-Za-z_][-A-Za-z_0-9]*
100 PATH [./][-/.%^A-Za-z_0-9]+
107 if ((i = kw_lookup(yytext)) == -1)
109 yylval.str = strdup(yytext);
116 yytext[yyleng-2] = '"';
117 yytext[yyleng-1] = '\0';
118 yylval.str = strdup(yytext + 1);
123 yytext[yyleng-1] = '\0';
124 yylval.str = strdup(yytext + 1);
129 yylval.str = strdup(yytext);
133 yylval.val = octal(yytext);
137 yylval.val = hex(yytext);
141 yylval.val = atoi(yytext);
155 #.* { /* Ignored (comment) */; }
156 [ \t\f]* { /* Ignored (white space) */; }
157 ";" { return SEMICOLON; }
158 "," { return COMMA; }
159 "=" { BEGIN TOEOL; return EQUALS; }
160 "+=" { BEGIN TOEOL; return PLUSEQUALS; }
169 /* otherwise continue scanning */
173 yylval.str = strdup(yytext);
176 . { return yytext[0]; }
181 * Look up a string in the keyword table. Returns a -1 if the
182 * string is not a keyword otherwise it returns the keyword number
186 kw_lookup(char *word)
190 for (kp = key_words; kp->kt_name != 0; kp++)
191 if (eq(word, kp->kt_name))
197 * Number conversion routines
201 octal(const char *str)
205 (void) sscanf(str, "%o", &num);
214 (void) sscanf(str+2, "%x", &num);
219 cfgfile_add(const char *fname)
223 cf = calloc(1, sizeof(*cf));
225 err(EXIT_FAILURE, "calloc");
227 asprintf(&cf->cfg_path, "%s", fname);
228 STAILQ_INSERT_TAIL(&cfgfiles, cf, cfg_next);
232 cfgfile_removeall(void)
236 while (!STAILQ_EMPTY(&cfgfiles)) {
237 cf = STAILQ_FIRST(&cfgfiles);
238 STAILQ_REMOVE_HEAD(&cfgfiles, cfg_next);
239 if (cf->cfg_path != NULL)
246 * Open the named file for inclusion at the current point. Returns 0 on
247 * success (file opened and previous state pushed), nonzero on failure
248 * (fopen failed, complaint made). The `ateof' parameter controls the
249 * token to be inserted at the end of the include file. If ateof == 0,
250 * then nothing is inserted.
253 include(const char *fname, int ateof)
260 fp = fopen(fname, "r");
261 if (fp == NULL && fname[0] != '.' && fname[0] != '/') {
262 asprintf(&fnamebuf, "../../conf/%s", fname);
263 if (fnamebuf != NULL) {
264 fp = fopen(fnamebuf, "r");
269 yyerror("cannot open included file");
272 cfgfile_add(fnamebuf == NULL ? fname : fnamebuf);
273 in = malloc(sizeof(*in));
276 in->in_buf = YY_CURRENT_BUFFER;
277 in->in_fname = yyfile;
278 in->in_lineno = yyline;
279 in->in_ateof = ateof;
281 yy_switch_to_buffer(yy_create_buffer(fp, YY_BUF_SIZE));
288 * Terminate the most recent inclusion.
300 yy_delete_buffer(YY_CURRENT_BUFFER);
302 yy_switch_to_buffer(in->in_buf);
303 yyfile = in->in_fname;
304 yyline = in->in_lineno;
305 ateof = in->in_ateof;