1995-02-17 17:29:50 +00:00
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%x string name charmap
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%{
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/*-
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* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
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* at Electronni Visti IA, Kiev, Ukraine.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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1996-05-30 23:03:00 +00:00
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* $Id: scan.l,v 1.1.1.1 1995/02/17 17:29:50 ache Exp $
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1995-02-17 17:29:50 +00:00
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*/
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#include <err.h>
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#include <unistd.h>
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#include <string.h>
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#include <sysexits.h>
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#include "collate.h"
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1996-05-30 23:03:00 +00:00
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#include "parse.tab.h"
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1995-02-17 17:29:50 +00:00
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int line_no = 1;
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u_char buf[STR_LEN], *ptr;
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FILE *map_fp;
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YY_BUFFER_STATE main_buf, map_buf;
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#ifdef FLEX_DEBUG
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YYSTYPE yylval;
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#endif /* FLEX_DEBUG */
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%}
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%%
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<INITIAL,charmap>[ \t] ;
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\" { ptr = buf; BEGIN(string); }
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\< { ptr = buf; BEGIN(name); }
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^#.*\n line_no++;
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^\n line_no++;
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\\\n line_no++;
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\\t { yylval.ch = '\t'; return CHAR; }
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\\n { yylval.ch = '\n'; return CHAR; }
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\\b { yylval.ch = '\b'; return CHAR; }
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\\f { yylval.ch = '\f'; return CHAR; }
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\\v { yylval.ch = '\v'; return CHAR; }
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\\r { yylval.ch = '\r'; return CHAR; }
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\\a { yylval.ch = '\a'; return CHAR; }
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\\. { yylval.ch = yytext[1]; return CHAR; }
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<INITIAL,charmap>\n { line_no++; return '\n'; }
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[;,{}()] return *yytext;
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substitute return SUBSTITUTE;
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with return WITH;
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order return ORDER;
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charmap BEGIN(charmap);
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;[ \t]*\.\.\.[ \t]*; return RANGE;
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\\[0-7]{3} {
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u_int v;
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sscanf(&yytext[1], "%o", &v);
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yylval.ch = (u_char)v;
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return CHAR;
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}
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\\x[0-9a-z]{2} {
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u_int v;
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sscanf(&yytext[2], "%x", &v);
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yylval.ch = (u_char)v;
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return CHAR;
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}
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[^;,{}() \t\n"<]+ {
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if(yyleng == 1) {
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yylval.ch = *yytext;
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return CHAR;
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}
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if(yyleng > STR_LEN - 1)
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errx(EX_UNAVAILABLE, "chain buffer overflaw near line %u",
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line_no);
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strcpy(yylval.str, yytext);
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return CHAIN;
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}
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<name>\\\> {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '>';
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}
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<string>\\\" {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '"';
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}
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<name>\> {
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*ptr = '\0';
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strcpy(yylval.str, buf);
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BEGIN(INITIAL);
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return NAME;
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}
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<string>\" {
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*ptr = '\0';
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strcpy(yylval.str, buf);
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BEGIN(INITIAL);
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return STRING;
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}
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<name,string>. {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = *yytext;
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}
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<name,string>\\t {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\t';
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}
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<name,string>\\b {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\b';
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}
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<name,string>\\f {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\f';
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}
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<name,string>\\v {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\v';
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}
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<name,string>\\n {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\n';
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}
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<name,string>\\r {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\r';
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}
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<name,string>\\a {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "name/string buffer overflaw near line %u",
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line_no);
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*ptr++ = '\a';
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}
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<name,string><<EOF>> {
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errx(EX_UNAVAILABLE, "unterminated name/string near line %u", line_no);
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}
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<name,string>\\x[0-9a-f]{2} {
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u_int v;
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sscanf(&yytext[2], "%x", &v);
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*ptr++ = (u_char)v;
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}
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<name,string>\\[0-7]{3} {
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u_int v;
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sscanf(&yytext[1], "%o", &v);
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*ptr++ = (u_char)v;
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}
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<charmap>[^ \t\n]+ {
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if((map_fp = fopen(yytext, "r")) == 0)
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err(EX_UNAVAILABLE, "can't open charmap file %s near line %u",
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yytext, line_no);
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map_buf = yy_new_buffer(map_fp, YY_BUF_SIZE);
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main_buf = YY_CURRENT_BUFFER;
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yy_switch_to_buffer(map_buf);
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BEGIN(INITIAL);
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}
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<charmap><<EOF>> {
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errx(EX_UNAVAILABLE, "charmap file name expected near line %u",
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line_no);
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}
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<<EOF>> {
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if(map_fp) {
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yy_switch_to_buffer(main_buf);
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yy_delete_buffer(map_buf);
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fclose(map_fp);
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map_fp = 0;
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}
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else
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yyterminate();
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}
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%%
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#ifdef FLEX_DEBUG
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main()
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{
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while(yylex())
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;
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return 0;
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}
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#endif /* FLEX_DEBUG */
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