1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
290 lines
8.1 KiB
Plaintext
290 lines
8.1 KiB
Plaintext
%x string name charmap defn nchar subs subs2
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%{
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <ctype.h>
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#include <err.h>
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#include <limits.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 "common.h"
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#include "y.tab.h"
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int line_no = 1, save_no, fromsubs;
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u_char buf[BUFSIZE], *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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int yylex(void);
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%}
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%%
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<INITIAL,charmap,nchar,subs,subs2>[ \t]+ ;
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<subs2>\" { ptr = buf; BEGIN(string); }
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<subs>\< { ptr = buf; fromsubs = 1; BEGIN(name); }
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<INITIAL>\< { ptr = buf; fromsubs = 0; BEGIN(name); }
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^#.*\n line_no++;
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^\n line_no++;
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<INITIAL>\\\n line_no++;
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<INITIAL,nchar,subs>\\t { yylval.ch = '\t'; return CHAR; }
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<INITIAL,nchar,subs>\\n { yylval.ch = '\n'; return CHAR; }
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<INITIAL,nchar,subs>\\b { yylval.ch = '\b'; return CHAR; }
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<INITIAL,nchar,subs>\\f { yylval.ch = '\f'; return CHAR; }
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<INITIAL,nchar,subs>\\v { yylval.ch = '\v'; return CHAR; }
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<INITIAL,nchar,subs>\\r { yylval.ch = '\r'; return CHAR; }
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<INITIAL,nchar,subs>\\a { yylval.ch = '\a'; return CHAR; }
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<subs2>\n {
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line_no++;
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BEGIN(INITIAL);
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return '\n';
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}
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<INITIAL,nchar>\n {
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line_no++;
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if (map_fp != NULL) {
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ptr = buf;
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BEGIN(defn);
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}
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return '\n';
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}
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<INITIAL>[;,{}()] return *yytext;
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<INITIAL>substitute { BEGIN(subs); return SUBSTITUTE; }
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<subs>with { BEGIN(subs2); return WITH; }
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<INITIAL>order return ORDER;
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<INITIAL>charmap BEGIN(charmap);
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<INITIAL>;[ \t]*\.\.\.[ \t]*; return RANGE;
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<INITIAL,nchar,subs>\\[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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<INITIAL,nchar,subs>\\x[0-9a-fA-F]{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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<INITIAL,nchar,subs>\\. { yylval.ch = yytext[1]; return CHAR; }
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<INITIAL,nchar,subs>. { yylval.ch = *yytext; return CHAR; }
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<defn>^#.*\n line_no++;
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<defn>[ \t]+ {
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if (ptr == buf)
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errx(EX_UNAVAILABLE, "map expected near line %u of %s",
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line_no, map_name);
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*ptr = '\0';
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strcpy(yylval.str, buf);
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BEGIN(nchar);
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return DEFN;
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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 buffer overflow near line %u, character '/'",
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line_no);
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*ptr++ = '/';
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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 buffer overflow near line %u, character '>'",
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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, "string buffer overflow near line %u, character '\"'",
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line_no);
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*ptr++ = '"';
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}
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<name>\> {
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u_int i;
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if (ptr == buf)
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errx(EX_UNAVAILABLE, "non-empty name expected near line %u",
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line_no);
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*ptr = '\0';
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for (i = 0; i <= UCHAR_MAX; i++) {
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if (strcmp(charmap_table[i], buf) == 0)
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goto findit;
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}
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errx(EX_UNAVAILABLE, "name <%s> not 'charmap'-defined near line %u",
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buf, line_no);
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findit:
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yylval.ch = i;
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if (fromsubs)
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BEGIN(subs);
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else
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BEGIN(INITIAL);
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return CHAR;
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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(subs2);
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return STRING;
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}
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<name,defn>. {
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const char *s = (map_fp != NULL) ? map_name : "input";
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if (!isascii(*yytext) || !isprint(*yytext))
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errx(EX_UNAVAILABLE, "non-ASCII or non-printable character 0x%02x not allowed in the map/name near line %u of %s",
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*yytext, line_no, s);
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "map/name buffer overflow near line %u of %s, character '%c'",
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line_no, s, *yytext);
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*ptr++ = *yytext;
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}
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<string>\\t {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\t'",
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line_no);
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*ptr++ = '\t';
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}
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<string>\\b {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\b'",
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line_no);
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*ptr++ = '\b';
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}
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<string>\\f {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\f'",
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line_no);
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*ptr++ = '\f';
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}
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<string>\\v {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\v'",
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line_no);
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*ptr++ = '\v';
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}
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<string>\\n {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\n'",
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line_no);
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*ptr++ = '\n';
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}
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<string>\\r {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\r'",
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line_no);
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*ptr++ = '\r';
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}
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<string>\\a {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '\\a'",
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line_no);
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*ptr++ = '\a';
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}
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<name,string,defn>\n {
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const char *s = (map_fp != NULL) ? map_name : "input";
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errx(EX_UNAVAILABLE, "unterminated map/name/string near line %u of %s", line_no, s);
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}
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<name,string,nchar><<EOF>> {
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const char *s = (map_fp != NULL) ? map_name : "input";
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errx(EX_UNAVAILABLE, "premature EOF in the name/string/char near line %u of %s", line_no, s);
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}
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<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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<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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<string>\\. {
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if(ptr >= buf + sizeof(buf) - 1)
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errx(EX_UNAVAILABLE, "string buffer overflow near line %u, character '%c'",
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line_no, yytext[1]);
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*ptr++ = yytext[1];
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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, "string buffer overflow near line %u, character '%c'",
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line_no, *yytext);
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*ptr++ = *yytext;
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}
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<charmap>[^ \t\n]+ {
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strcat(map_name, "/");
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strcat(map_name, yytext);
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if((map_fp = fopen(map_name, "r")) == NULL)
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err(EX_UNAVAILABLE, "can't open 'charmap' file %s",
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map_name);
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save_no = line_no;
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line_no = 1;
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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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ptr = buf;
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BEGIN(defn);
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}
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<charmap>\n {
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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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<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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<INITIAL,defn><<EOF>> {
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if(map_fp != NULL) {
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if (ptr != buf)
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errx(EX_UNAVAILABLE, "premature EOF in the map near line %u of %s", line_no, map_name);
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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 = NULL;
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line_no = save_no;
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BEGIN(INITIAL);
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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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