diff options
Diffstat (limited to 'usr.sbin/config/lang.l')
| -rw-r--r-- | usr.sbin/config/lang.l | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/usr.sbin/config/lang.l b/usr.sbin/config/lang.l new file mode 100644 index 0000000..535ffcd --- /dev/null +++ b/usr.sbin/config/lang.l @@ -0,0 +1,215 @@ +%{ +/*- + * Copyright (c) 1980, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)lang.l 8.1 (Berkeley) 6/6/93 + */ + +#include <ctype.h> +#include "y.tab.h" +#include "config.h" + +#define tprintf if (do_trace) printf + +/* + * Key word table + */ + +struct kt { + char *kt_name; + int kt_val; +} key_words[] = { + { "and", AND }, + { "args", ARGS }, + { "at", AT }, +#if MACHINE_I386 + { "bio", BIO }, +#endif MACHINE_I386 + { "config", CONFIG }, + { "controller", CONTROLLER }, + { "cpu", CPU }, + { "csr", CSR }, + { "device", DEVICE }, + { "disk", DISK }, + { "drive", DRIVE }, +#if MACHINE_I386 + { "drq", DRQ }, +#endif MACHINE_I386 + { "dst", DST }, + { "dumps", DUMPS }, + { "flags", FLAGS }, + { "hz", HZ }, + { "ident", IDENT }, + { "interleave", INTERLEAVE }, +#if MACHINE_I386 + { "iomem", IOMEM }, + { "iosiz", IOSIZ }, + { "irq", IRQ }, +#endif MACHINE_I386 + { "machine", MACHINE }, + { "major", MAJOR }, + { "makeoptions", MAKEOPTIONS }, + { "master", MASTER }, + { "maxusers", MAXUSERS }, + { "minor", MINOR }, +#if MACHINE_I386 + { "net", NET }, +#endif MACHINE_I386 + { "nexus", NEXUS }, + { "on", ON }, + { "options", OPTIONS }, +#if MACHINE_I386 + { "port", PORT }, +#endif MACHINE_I386 + { "priority", PRIORITY }, + { "pseudo-device",PSEUDO_DEVICE }, + { "root", ROOT }, +#if MACHINE_HP300 || MACHINE_LUNA68K + { "scode", NEXUS }, +#endif + { "sequential", SEQUENTIAL }, + { "size", SIZE }, + { "slave", SLAVE }, + { "swap", SWAP }, + { "tape", DEVICE }, +#if MACHINE_I386 + { "tty", TTY }, +#endif MACHINE_I386 + { "timezone", TIMEZONE }, + { "trace", TRACE }, + { "vector", VECTOR }, + { 0, 0 }, +}; +%} +WORD [A-Za-z_][-A-Za-z_]* +%% +{WORD} { + int i; + + if ((i = kw_lookup(yytext)) == -1) + { + yylval.str = yytext; + tprintf("id(%s) ", yytext); + return ID; + } + tprintf("(%s) ", yytext); + return i; + } +\"[^"]+\" { + yytext[strlen(yytext)-1] = '\0'; + yylval.str = yytext + 1; + return ID; + } +0[0-7]* { + yylval.val = octal(yytext); + tprintf("#O:%o ", yylval.val); + return NUMBER; + } +0x[0-9a-fA-F]+ { + yylval.val = hex(yytext); + tprintf("#X:%x ", yylval.val); + return NUMBER; + } +[1-9][0-9]* { + yylval.val = atoi(yytext); + tprintf("#D:%d ", yylval.val); + return NUMBER; + } +[0-9]"."[0-9]* { + double atof(); + yylval.val = (int) (60 * atof(yytext) + 0.5); + return FPNUMBER; + } +"-" { + return MINUS; + } +"?" { + yylval.val = -1; + tprintf("? "); + return NUMBER; + } +\n/[ \t] { + yyline++; + tprintf("\n... "); + } +\n { + yyline++; + tprintf("\n"); + return SEMICOLON; + } +#.* { /* Ignored (comment) */; } +[ \t]* { /* Ignored (white space) */; } +";" { return SEMICOLON; } +"," { return COMMA; } +"=" { return EQUALS; } +"@" { return AT; } +. { return yytext[0]; } + +%% +/* + * kw_lookup + * Look up a string in the keyword table. Returns a -1 if the + * string is not a keyword otherwise it returns the keyword number + */ + +kw_lookup(word) +register char *word; +{ + register struct kt *kp; + + for (kp = key_words; kp->kt_name != 0; kp++) + if (eq(word, kp->kt_name)) + return kp->kt_val; + return -1; +} + +/* + * Number conversion routines + */ + +octal(str) +char *str; +{ + int num; + + (void) sscanf(str, "%o", &num); + return num; +} + +hex(str) +char *str; +{ + int num; + + (void) sscanf(str+2, "%x", &num); + return num; +} |
