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Diffstat (limited to 'crypto/heimdal/lib/sl/lex.l')
-rw-r--r-- | crypto/heimdal/lib/sl/lex.l | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/sl/lex.l b/crypto/heimdal/lib/sl/lex.l new file mode 100644 index 0000000..3e39479 --- /dev/null +++ b/crypto/heimdal/lib/sl/lex.l @@ -0,0 +1,119 @@ +%{ +/* + * Copyright (c) 1998 - 2001 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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. + */ + +#undef ECHO + +#include "make_cmds.h" +#include "parse.h" + +RCSID("$Id: lex.l,v 1.6 2001/09/16 23:10:10 assar Exp $"); + +static unsigned lineno = 1; +static int getstring(void); + +#define YY_NO_UNPUT + +#undef ECHO + +%} + + +%% +command_table { return TABLE; } +request { return REQUEST; } +unknown { return UNKNOWN; } +unimplemented { return UNIMPLEMENTED; } +end { return END; } +#[^\n]* ; +[ \t] ; +\n { lineno++; } +\" { return getstring(); } +[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return STRING; } +. { return *yytext; } +%% + +#ifndef yywrap /* XXX */ +int +yywrap () +{ + return 1; +} +#endif + +static int +getstring(void) +{ + char x[128]; + int i = 0; + int c; + int backslash = 0; + while((c = input()) != EOF){ + if(backslash) { + if(c == 'n') + c = '\n'; + else if(c == 't') + c = '\t'; + x[i++] = c; + backslash = 0; + continue; + } + if(c == '\n'){ + error_message("unterminated string"); + lineno++; + break; + } + if(c == '\\'){ + backslash++; + continue; + } + if(c == '\"') + break; + x[i++] = c; + } + x[i] = '\0'; + yylval.string = strdup(x); + return STRING; +} + +void +error_message (const char *format, ...) +{ + va_list args; + + va_start (args, format); + fprintf (stderr, "%s:%d: ", filename, lineno); + vfprintf (stderr, format, args); + va_end (args); + numerror++; +} |