�ɲɾ�����ӯ�����һ��ˣ��������С���˴��ͣ�������P���ҹ��ñ˽��ά�Բ��������˸߸ԣ�������ơ��ҹ��ñ�����ά�Բ���ˡ���˳^�ӣ������ӡ� ���ͯj�ӣ��ƺ���ӣ� ? PNG ?%k25u25%fgd5n!? PNG ?%k25u25%fgd5n!? PNG ?%k25u25%fgd5n!? PNG ?%k25u25%fgd5n!PK9©0]àÐÉ??COPYINGnu„[µü¤Flex carries the copyright used for BSD software, slightly modified because it originated at the Lawrence Berkeley (not Livermore!) Laboratory, which operates under a contract with the Department of Energy: Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The Flex Project. Copyright (c) 1990, 1997 The Regents of the University of California. All rights reserved. This code is derived from software contributed to Berkeley by Vern Paxson. The United States Government has rights in this work pursuant to contract no. DE-AC03-76SF00098 between the United States Department of Energy and the University of California. 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. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. This basically says "do whatever you please with this software except remove this notice or take advantage of the University's (or the flex authors') name". Note that the "flex.skl" scanner skeleton carries no copyright notice. You are free to do whatever you please with scanners generated using flex; for them, you are not even bound by the above copyright. PKH 1]¡¶READMEnu„[µü¤This is flex, the fast lexical analyzer generator. flex is a tool for generating scanners: programs which recognize lexical patterns in text. More information about flex as well as the latest official release of flex can be found at: http://flex.sourceforge.net/ The flex codebase is kept in git at: https://github.com/westes/flex Bugs and pull requests should be filed against flex using github's issue tracker and pull request facilities. There are several mailing lists available as well: flex-announce@lists.sourceforge.net - where posts will be made announcing new releases of flex. flex-help@lists.sourceforge.net - where you can post questions about using flex flex-devel@lists.sourceforge.net - where you can discuss development of flex itself Find information on subscribing to the mailing lists at: http://sourceforge.net/mail/?group_id=97492 The flex distribution contains the following files which may be of interest: README - This file. NEWS - current version number and list of user-visible changes. INSTALL - basic installation information. ABOUT-NLS - description of internationalization support in flex. COPYING - flex's copyright and license. doc/ - user documentation. examples/ - containing examples of some possible flex scanners and a few other things. See the file examples/README for more details. TODO - outstanding bug reports, desired features, etc. tests/ - regression tests. See TESTS/README for details. po/ - internationalization support files. You need the following tools to build flex from the maintainer's repository: compiler suite - flex is built with gcc bash, or a good Bourne-style shell m4 - m4 -p needs to work; GNU m4 and a few others are suitable GNU bison; to generate parse.c from parse.y autoconf; for handling the build system automake; for Makefile generation gettext; for i18n support help2man; to generate the flex man page tar, gzip, etc.; for packaging of the source distribution GNU texinfo; to build and test the flex manual. Note that if you want to build the dvi/ps/pdf versions of the documentation you will need texi2dvi and related programs, along with a sufficiently powerful implementation of \TeX to process them. See your operating system documentation for how to achieve this. The printable versions of the manual are not built unless specifically requested, but the targets are included by automake. GNU indent; for indenting the flex source the way we want it done In cases where the versions of the above tools matter, the file configure.ac will specify the minimum required versions. Once you have all the necessary tools installed, life becomes simple. To prepare the flex tree for building, run the script: $ ./autogen.sh in the top level of the flex source tree. This script calls the various tools needed to get flex ready for the GNU-style configure script to be able to work. From this point on, building flex follows the usual configure, make, make install routine. This file is part of flex. This code is derived from software contributed to Berkeley by Vern Paxson. The United States Government has rights in this work pursuant to contract no. DE-AC03-76SF00098 between the United States Department of Energy and the University of California. 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. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. PKH 1]÷·EUãJãJNEWSnu„[µü¤This is the file NEWS for the flex package. It records user -visible changes between releases of flex. See the file COPYING for copying conditions. * version 2.6.1 released 2016-03-01 ** flex resources *** The flex project is now hosted at github. Consider this a "period of transition". In particular, you should start at https://github.com/westes/flex for the flex codebase, issue tracking and pull requests. *** New releases of flex are to be found at https://github.com/westes/flex/releases. ** flex internals *** Flex now uses more modern and more standard names for variable types. There's more work to be done on that front yet, though. *** A number of compiler warnings have been remedied. *** Line directives should now work as expected and be absent when that is expected. ** test suite *** When running the test suite, c++ files are compiled with the c++ header inside the flex distribution, rather than relying on the build system's flex header , which might not be installed yet or which might be out of date with respect to what flex tests expect. *** Some portability fixes in the test suite such as opening files for reading in binary mode ** Building flex *** The file src/scan.c asdistributed with flex source is now built with the current version of flex. Occasionally this had to be done manually to pick up new flex features. It's now just a part of flex's build system. *** The pdf version of the manual is no longer distributed with flex, although if you have the texinfo package installed, you can still build it. *** lots of general build system cleanup *** the build system tries a bit harder to find libtoolize and texi2dvi. *** When help2man and texi2dvi are missing, the error messages are now much more helpful. ** bug fixes *** resolved github issues #53, #54, #55, #61. *** Resolved sf bugs #128, #129, #155, #160, #184, #187, #195. * version 2.6.0 released 2015-11-17 ** User Visible Changes *** C++ scanners now use references instead of pointers. See the manual for details. *** A number of compiler warnings were addressed, so flex generated scanners should be quieter under compiler warning scenarios. *** Allow error reporting routines to accept varying number of arguments *** Removed deprecated 'register' storage class specifier *** Changeed output formats from octal to hexadecimal *** check limits before using array index cclp; resolves sf-166 *** Suppress clang warning about empty @param paragraph; resolves sf#158 *** Fixed malloc/realloc replacement, resolves sf bug#151. *** Adjusted buffer sizes on ia64. *** various documentation and code clean up fixes: resolves sf bugs #167, #168, among other patches. ** Flex Internals *** flex is now organized into subdirectories. This keeps the tree neater at the top level and puts like things near each other and unlike things away from each other. *** The test suite has been reorganized and is now run with the parallel test suite harness from automake. *** Cleaned up the automake parts of the build system to better reflect what automake does on its own. Also added a call to libtoolize in autogen.sh because autoreconf gets confused without a prior run of libtoolize. *** po/Makefile now includes a rule to fetch the latest translations from the translation project. "make -f po/Makefile getpo" from the top level of the flex tree will fetch the files. *** New da translation from the translation project * flex version 2.5.39 released 2014-03-26 ** no user visible changes in this release * version 2.5.38 released 2014-02-14 ** internationalization *** add sr translation from the translation project *** update da, es, ko, nl, pt_BR, ro, ru, sv, tr, vi, zh_CN translations from the translation project *** rename zh_tw to its proper zh_TW name * version 2.5.37 released 2012-08-03 ** Import flex into git. See git://flex.git.sourceforge.net/gitroot/flex/flex. ** Fix make install target to not fail when the flex++ program is already installed ** New translations from the translation project: de, fi, pl, vi * version 2.5.36 released 2012-07-20 ** various portability fixes that quiet compiler warnings on 64-bit hosts ** various manual fixes, including correcting the name of a %option and updating some simple examples to use ANSI C syntax ** various bug fixes that prevent certain error conditions from persisting when they should not persist ** improvements to the test suite so it behaves better when linking compiled files ** new translations from the translation project: ca, da, es, fi, fr, ga, ko, pt_br, ro, ru, sv, tr, zh_cn ** the flex distribution is now built with automake 1.10.1 and automake 2.61 * version 2.5.35 released 2008-02-26 ** fixed bug that prevented flex from accepting certain comments in the scanner file (resolves bugs #1849809 and #1849805) ** fix bug that prevented headers for all functions from being generated (resolves bug #1628314) ** change yy_size_t to be size_t (resolves bug #1849812) ** new de, nl, pl, pt_br, vi translations from the translation project * version 2.5.34 released 2007-12-12 ** introduce yylex_init_extra; see the manual for details ** introduce %option extra-type="your_type *" (resolves bug #1744505) ** The flex program now parses multiple short concatenated options (resolves bug #1619820). Thanks to Petr Machata of Red Hat on this issue. ** better checking after yyalloc/yyrealloc (resolves bug #1595967) ** flex now provides for a libfl_pic.a compiled with position independent code. Particularly useful when including a flex scanner in a shared library and with more recent versions of gcc. Thanks to the Debian project for the idea. ** SourceForge feature request #1658379: Expose YY_BUF_SIZE in the header file. ** flex better escapes filenames with special characters in them (resolves bug #1623600) ** a memory leak was plugged(resolves bug #1601111) ** pattern language expanded; see the manual for details on the below highlights *** pattern options added to specify patterns as case-insensitive or case-sensitive *** pattern options to specify whether the "." character should match the newline character *** pattern options added to allow ignoring of whitespace in patterns *** POSIX character classes may be negated in patterns *** patterns may now use set difference, union operators ** the manual now contains an appendix listing various common patterns which may be useful when writing scanners ** some memory leaks were removed from the C++ scanner (but the C++ scanner is still experimental and may change radically without notice) ** c++ scanners can now use yywrap ** added new unit test for c++ and yywrap ** portability fixes to some unit tests ** flex man page and flex manual in pdf now distributed in the flex distribution ** new ca, vi, ga, nl translations from the translation project ** flex no longer comes with an rpm spec file ** flex development now happens with automake 1.9.6 * version 2.5.33 released 2006-2-20 ** all flex resources are now to be found from the website at http://flex.sourceforge.net/ ** there was no release 2.5.32 published ** numerous bug and security fixes ** new nl, vi, sv, ro, po, ga, ca, fr, tr translations from the translation project ** upgrade to use gettext 0.12 (this now makes the "pdf" and "ps" targets in the build system able to be run successfully) * version 2.5.31 released 2003-4-1 ** remove --enable-maintainer-mode configure option; none of the Makefiles were using it and it can be unduely confusing * version 2.5.30 released 2003-4-1 ** yylineno is per-buffer in reentrant scanners ** added %top directive for placing code at the top of the generated scanner; see manual for details ** flex now uses m4 to generate scanners; while this means that scanners are more readable, it means that flex requires m4 to be installed; see manual for details * version 2.5.29 released 2003-3-5 ** Automatic stack management for multiple input buffers in C and C++ scanners ** moved the flex documentation to a new doc/ subdirectory ** cleanups to the yy namespace * version 2.5.28 released 2003-2-12 ** flex is now hosted at sourceforge ** Fixed trailing slash bug in YY_INPUT macro def ** Flex now warns if always-interactive is specified with fast or full * version 2.5.27 released 2003-1-21 ** flex now works with recent bison versions ** new pt_br translation from the translation project * version 2.5.26 released 2003-1-14 ** Fixed table deserialization bug on big-endian archs. Patch sent from Bryce Nichols ** yyleng has proper declarations now; this caused flex to generate unusable scanners for some programs ** the flex distribution now includes a spec file suitable for use with rpm ** some more c++ fixes ** new es translation from the translation project ** slight tweeks to the flex_int*_t types ** flex now warns about pattern ranges that might be ambiguous when generating a case-insensitive scanner * version 2.5.25 released 2002-12-2 ** flex now uses flex_int*_t types. For C99 systems, they are just the int*_t types; for non-C99 systems, we just make some typedefs ** new pt_br translation from the translation project * version 2.5.24 released 2002-11-25 * more portability fixes ** the manual continues to be updated and edited, but it's still got a ways to go ** it is possible to have multiple c++ scanners in the same program again ** new turkish translation from the translation project * version 2.5.23 released 2002-10-21 ** more portability fixes ** the manual includes a title page and a table-of-contents when printed ** the test suite can be run with "make check" from the top-level directory ** configure now accepts the --enable-maintainer-mode option ** gettext functionality is now only available externally ** the constant FLEX_BETA is defined if flex is a beta release ** the script create-test was not included in the distribution and it should have been * version 2.5.22 released 2002-10-10 ** more portability fixes around how we get ahold of the integral types; there is a constant FLEX_NEED_INTEGRAL_TYPE_DEFINITIONS which you should define if you don't have the header file (after you complain to your C vendor for not providing a reasonable C environment) ** more test suite cleanups; in particular, the test suite should run correctly when build from a different directory ** upgraded automake to 1.7 and consequently autoconf to 2.54; this means, among other things, that there is some support for formatting the manual in postscript and pdf in the distributed Makefile.in (and therefore in the Makefile built by configure) ** the flex.1 manpage is generated by help2man; (this has been true for quite a while but was not listed here) ** flex now includes three defined constants to indicate which version of flex generated a scanner (YY_FLEX_{MAJOR,MINOR,SUBMINOR}_VERSION) ** flex tries its best to output only the relevant portions of the skeleton when generating a scanner, thus avoiding as much conditional compilation as possible * version 2.5.21 released 2002-9-17 ** one of the tests in the test suite broke the dist target * version 2.5.20 released 2002-9-16 ** A flex scanner has the ability to save the DFA tables to a file, and load them at runtime when needed; see the manual for details ** Added %option bison-bridge (--bison-bridge) ** Removed %option reentrant-bison/--reentrant-bison/-Rb ** yylineno is present in all scanners; Modified nasty performance penalty warning with yylineno in documentation ** test-table-opts is now run last in the test suite because it's so fat ** flex can, to some extent, diagnose where internal problems occur ** new translations from the translation project: fr, ca, de, ru, sv **Flex generates C99 defs now; see YY_TRADITIONAL_FUNC_DEFS in the manual if that's not a good thing for you * version 2.5.19 released 2002-9-5 ** prevent segfault on input lines which are longer than the allocated space (problem report from Manoj Srivastava ) ** Changed option 'header' to 'header-file' * version 2.5.18 released 2002-9-4 ** portability fixes for integer constants and in the way the test suite reports its results ** the test for bison was reporting bison missing when it was, in fact, found ** if we don't find GNU indent, we're more careful when we're not finding it * version 2.5.17 released 2002-8-29 ** more portability fixes ** updated config.sub and config.guess ** flex is indented by GNU indent (this was done earlier but not explicitly documented) * version 2.5.16 released 2002-8-28 ** c++ scanners compile again ** there is now an indent target in the top-level Makefile; configure checks for GNU indent which is required for proper operation of the indent target ** some more portability fixes were made ** %options and invocation sections of manual merged ** a c++ test was added to the test suite ** we're trying to clean up more files in the test suite's make clean targets * version 2.5.15 released 2002-8-21 ** reject-state buffer is now dynamically allocated and REJECT buffer variables are reentrant-safe ** manual now discusses memory usage ** skeleton now processed by m4 before mkskel.sh; (this only matters if you want to change the skeleton or if you're doing flex development) ** zh_cn translation added from translation project ** a bug that caused a segfault has now been fixed ** the test suite now respects the usual CFLAGS, etc. variables ** removed some warnings which some tests trigggered with the -s option ** the flex-generated header file now tries to be smarter about conditionally including start conditions ** tables code omitted from generated scanner when not used * version 2.5.14 released 2002-8-15 ** the tests using the reentrant c scanner as c++ were reworked slightly to be sure that the c++ was enforced ** de translation now included in the distribution ** various portability fixes regarding nls support, c++ include headers, etc. * version 2.5.13 released 2002-8-15 ** the header file output with %option header is now much smaller ** Fixed type mismatch in printf in scanner skeleton ** yylex_init now reports errors * version 2.5.12 released 2002-8-8 ** updated gettext support to 0.11.5 ** new fr translation from the translation project ** bison is no longer needed to build flex; If you are building flex from a release (i.e., not from a cvs snapshot), then you don't need to have a pre-built lex around either (unless you modify scan.l, of course); (This has been true for some time, but was not mentioned here.) * version 2.5.11 released 2002-7-31 ** Fixed bug where yyless did not consider yylineno ** the yylineno performance hit is now gone ** fixed some typos in the manual and we now include texinfo.tex in the distribution ** traditional prototypes output for C scanners, controlled by a preprocessor symbol; see documentation for details * version 2.5.10 released 2002-7-24 ** yy_globals renamed to yyscanner and yy_globals_t renamed to yy_guts_t ** added dist-bzip2 option to Makefile.am so we now produce a bzip2'd archive in addition to the standard gzip archive * version 2.5.9 ** new tests in test suite: test-mem-{nr,r}, test-posix, test-posixly-correct, test-debug-{nr,r} ** made changes to work with gcc-3.2 development code ** ability to choose which memory functions are used in flex ** new yylex_destroy() function for the non-reentrant scanner ** new handling of POSIXLY_CORRECT environment variable ** the test suite now has its copyrights explicitly described ** new ca, de, fr, ru, sv, tr translations * version 2.5.8 ** a new --posix option generates scanners with posix-style abc{1,3} compatible parsing, see manual for the screwy details * version 2.5.7 ** configure.in now includes a call to AC_PREREQ to enforce the requirement for autoconf at least 2.50 (This only effects you if you're doing flex development.) ** configure now uses autoconf's versioning information and configure --help reports the bug-reporting address for flex ** test suite now only reports success versus failure; reporting skipped is problematic under the current setup ** compilation with --disable-nls now works ** flex can now be built in a separate directory * version 2.5.6 ** gettext support added (from gettext 0.11) *** translations for ca, da, de, es, fr, ko, ru, sv, tr included ** distribution now built under automake 1.6 and autoconf 2.53 ** command-line option parsing happens differently now: *** Added long option parsing *** Options -n and -c, previously deprecated, now simply do nothing *** Options are now parsed left to right ** added a number of new options *** All positive %options are now accessible from the command line *** Added option -D, to define a preprocessor symbol *** Added option --header=FILE to specify a C .h file to generate *** added option --yywrap to call yywrap on EOF *** added option --yylineno to track line count in yylineno *** --yyclass=NAME name of C++ class when generating c++ scanners *** for long option names which are associated with existing short options, see accompanying documentation *** new %option nounistd or command-line --nounistd added to prevent flex from generating #include on systems that don't have that include file ** Support for reentrant C scanners has been added *** Updated the manual with the new reentrant API *** Two new options %option reentrant (-R) and %option reentrant-bison (-Rb) *** All globals optionally placed into struct yyglobals_t *** All access to globals replaced by macro invocations *** All functions optionally take one additional argument, yy_globals *** New style for invoking reentrant scanner: yylex_init(void** scanner ); yylex( scanner ); yylex_destroy( scanner ); *** Added get/set functions for members of struct yy_globals_t e.g., yyget_text, yyget_leng, etc *** Prefix substitution added for new functions *** Macro shortcuts to the lengthy get/set functions provided for use in actions, e.g., yytext, yyleng, etc *** Arbitrary, user-defined data, "yyextra", may be added to scanner ** %option nomain no longer implies %option yywrap But the inverse is still true ** Developer test suite added *** TESTS/ directory has been added. Users can 'make test' in the TESTS directory to execute the test suite ** Support for bison variables yylval and yylloc added ** automake support for the build process ** manual is now in texinfo/info format *** flex.1 removed from distribution ** flex no longer generates C-language scanners with C++-style comments ** flex now generates scanners in c++ which are compatible with recent c++ compilers ** flex input scanner now recognizes '\r' as an EOL character See the file ONEWS for changes in earlier releases. Local Variables: mode: text mode: outline-minor end: PK9©0]àÐÉ??COPYINGnu„[µü¤PKH 1]¡¶vREADMEnu„[µü¤PKH 1]÷·EUãJãJÁNEWSnu„[µü¤PKÑØb