76 lines
1.5 KiB
Plaintext
76 lines
1.5 KiB
Plaintext
/* Lexical analyzer for dgamelaunch's configuration file. */
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%{
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "y.tab.h"
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#include "dgamelaunch.h"
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unsigned int line = 1, col = 0;
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#define YY_USER_ACTION col += yyleng;
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%}
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NEGNUMBER -[0-9]+
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NUMBER [0-9]+
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VALUE \".*\"
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MALSTRING \"[^\"\n]*\n
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WHITE [\t ]*
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COMMENT ^#.*
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%%
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{NEGNUMBER} {
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fprintf(stderr,"%s:%d: negative value not accepted! Fix it now!\n",
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config, line);
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graceful_exit(1);
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}
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{NUMBER} {
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yylval.i = strtoul(yytext, NULL, 10);
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return TYPE_NUMBER;
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}
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{VALUE} {
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yytext[yyleng - 1] = '\0'; /* Kill the trailing quote */
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yylval.s = strdup(yytext + 1); /* kill leading quote */
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return TYPE_VALUE;
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}
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{MALSTRING} {
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yytext[yyleng - 1] = '\0'; /* remove trailing newline */
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fprintf(stderr, "%s:%d:%d: unterminated string constant: %s\n", config, line, col - yyleng + 1, yytext);
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return TYPE_MALSTRING;
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}
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{WHITE} { }
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{COMMENT} { }
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"=" { return '='; }
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"shed_user" { return TYPE_SUSER; }
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"shed_group" { return TYPE_SGROUP; }
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"shed_uid" { return TYPE_SUID; }
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"shed_gid" { return TYPE_SGID; }
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"maxusers" { return TYPE_MAX; }
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"chroot_path" { return TYPE_PATH_CHROOT; }
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"nethack" { return TYPE_PATH_NETHACK; }
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"dglroot" { return TYPE_PATH_DGLDIR; }
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"spooldir" { return TYPE_PATH_SPOOL; }
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"banner" { return TYPE_PATH_BANNER; }
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"rc_template" { return TYPE_PATH_CANNED; }
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"passwd" { return TYPE_PATH_PASSWD; }
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"lockfile" { return TYPE_PATH_LOCKFILE; }
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\n { line++; col = 0; }
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. {
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fprintf(stderr, "%s:%d:%d unrecognized token \"%s\"\n", config, line, col, yytext);
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}
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%%
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