Module Name:	pkgsrc
Committed By:	wiz
Date:		Wed Aug  3 17:43:13 UTC 2005

Modified Files:
	pkgsrc/devel/pcre: Makefile PLIST distinfo
Removed Files:
	pkgsrc/devel/pcre/patches: patch-aa

Log Message:
Update to 6.2:

Version 6.2 01-Aug-05
---------------------

 1. There was no test for integer overflow of quantifier values. A construction
    such as {1111111111111111} would give undefined results. What is worse, if
    a minimum quantifier for a parenthesized subpattern overflowed and became
    negative, the calculation of the memory size went wrong. This could have
    led to memory overwriting.

 2. Building PCRE using VPATH was broken. Hopefully it is now fixed.

 3. Added "b" to the 2nd argument of fopen() in dftables.c, for non-Unix-like
    operating environments where this matters.

 4. Applied Giuseppe Maxia's patch to add additional features for controlling
    PCRE options from within the C++ wrapper.

 5. Named capturing subpatterns were not being correctly counted when a pattern
    was compiled. This caused two problems: (a) If there were more than 100
    such subpatterns, the calculation of the memory needed for the whole
    compiled pattern went wrong, leading to an overflow error. (b) Numerical
    back references of the form \12, where the number was greater than 9, were
    not recognized as back references, even though there were sufficient
    previous subpatterns.

 6. Two minor patches to pcrecpp.cc in order to allow it to compile on older
    versions of gcc, e.g. 2.95.4.

Version 6.1 21-Jun-05
---------------------

 1. There was one reference to the variable "posix" in pcretest.c that was not
    surrounded by "#if !defined NOPOSIX".

 2. Make it possible to compile pcretest without DFA support, UTF8 support, or
    the cross-check on the old pcre_info() function, for the benefit of the
    cut-down version of PCRE that is currently imported into Exim.

 3. A (silly) pattern starting with (?i)(?-i) caused an internal space
    allocation error. I've done the easy fix, which wastes 2 bytes for sensible
    patterns that start (?i) but I don't think that matters. The use of (?i) is
    just an example; this all applies to the other options as well.

 4. Since libtool seems to echo the compile commands it is issuing, the output
    from "make" can be reduced a bit by putting "@" in front of each libtool
    compile command.

 5. Patch from the folks at Google for configure.in to be a bit more thorough
    in checking for a suitable C++ installation before trying to compile the
    C++ stuff. This should fix a reported problem when a compiler was present,
    but no suitable headers.

 6. The man pages all had just "PCRE" as their title. I have changed them to
    be the relevant file name. I have also arranged that these names are
    retained in the file doc/pcre.txt, which is a concatenation in text format
    of all the man pages except the little individual ones for each function.

 7. The NON-UNIX-USE file had not been updated for the different set of source
    files that come with release 6. I also added a few comments about the C++
    wrapper.

Version 6.0 07-Jun-05
---------------------

 1. Some minor internal re-organization to help with my DFA experiments.

 2. Some missing #ifdef SUPPORT_UCP conditionals in pcretest and printint that
    didn't matter for the library itself when fully configured, but did matter
    when compiling without UCP support, or within Exim, where the ucp files are
    not imported.

 3. Refactoring of the library code to split up the various functions into
    different source modules. The addition of the new DFA matching code (see
    below) to a single monolithic source would have made it really too
    unwieldy, quite apart from causing all the code to be include in a
    statically linked application, when only some functions are used. This is
    relevant even without the DFA addition now that patterns can be compiled in
    one application and matched in another.

    The downside of splitting up is that there have to be some external
    functions and data tables that are used internally in different modules of
    the library but which are not part of the API. These have all had their
    names changed to start with "_pcre_" so that they are unlikely to clash
    with other external names.

 4. Added an alternate matching function, pcre_dfa_exec(), which matches using
    a different (DFA) algorithm. Although it is slower than the original
    function, it does have some advantages for certain types of matching
    problem.

 5. Upgrades to pcretest in order to test the features of pcre_dfa_exec(),
    including restarting after a partial match.

 6. A patch for pcregrep that defines INVALID_FILE_ATTRIBUTES if it is not
    defined when compiling for Windows was sent to me. I have put it into the
    code, though I have no means of testing or verifying it.

 7. Added the pcre_refcount() auxiliary function.

 8. Added the PCRE_FIRSTLINE option. This constrains an unanchored pattern to
    match before or at the first newline in the subject string. In pcretest,
    the /f option on a pattern can be used to set this.

 9. A repeated \w when used in UTF-8 mode with characters greater than 256
    would behave wrongly. This has been present in PCRE since release 4.0.

10. A number of changes to the pcregrep command:

    (a) Refactored how -x works; insert ^(...)$ instead of setting
        PCRE_ANCHORED and checking the length, in preparation for adding
        something similar for -w.

    (b) Added the -w (match as a word) option.

    (c) Refactored the way lines are read and buffered so as to have more
        than one at a time available.

    (d) Implemented a pcregrep test script.

    (e) Added the -M (multiline match) option. This allows patterns to match
        over several lines of the subject. The buffering ensures that at least
        8K, or the rest of the document (whichever is the shorter) is available
        for matching (and similarly the previous 8K for lookbehind assertions).

    (f) Changed the --help output so that it now says

          -w, --word-regex(p)

        instead of two lines, one with "regex" and the other with "regexp"
        because that confused at least one person since the short forms are the
        same. (This required a bit of code, as the output is generated
        automatically from a table. It wasn't just a text change.)

    (g) -- can be used to terminate pcregrep options if the next thing isn't an
        option but starts with a hyphen. Could be a pattern or a path name
        starting with a hyphen, for instance.

    (h) "-" can be given as a file name to represent stdin.

    (i) When file names are being printed, "(standard input)" is used for
        the standard input, for compatibility with GNU grep. Previously
        "<stdin>" was used.

    (j) The option --label=xxx can be used to supply a name to be used for
        stdin when file names are being printed. There is no short form.

    (k) Re-factored the options decoding logic because we are going to add
        two more options that take data. Such options can now be given in four
        different ways, e.g. "-fname", "-f name", "--file=name", "--file name".

    (l) Added the -A, -B, and -C options for requesting that lines of context
        around matches be printed.

    (m) Added the -L option to print the names of files that do not contain
        any matching lines, that is, the complement of -l.

    (n) The return code is 2 if any file cannot be opened, but pcregrep does
        continue to scan other files.

    (o) The -s option was incorrectly implemented. For compatibility with other
        greps, it now suppresses the error message for a non-existent or non-
        accessible file (but not the return code). There is a new option called
        -q that suppresses the output of matching lines, which was what -s was
        previously doing.

    (p) Added --include and --exclude options to specify files for inclusion
        and exclusion when recursing.

11. The Makefile was not using the Autoconf-supported LDFLAGS macro properly.
    Hopefully, it now does.

12. Missing cast in pcre_study().

13. Added an "uninstall" target to the makefile.

14. Replaced "extern" in the function prototypes in Makefile.in with
    "PCRE_DATA_SCOPE", which defaults to 'extern' or 'extern "C"' in the Unix
    world, but is set differently for Windows.

15. Added a second compiling function called pcre_compile2(). The only
    difference is that it has an extra argument, which is a pointer to an
    integer error code. When there is a compile-time failure, this is set
    non-zero, in addition to the error test pointer being set to point to an
    error message. The new argument may be NULL if no error number is required
    (but then you may as well call pcre_compile(), which is now just a
    wrapper). This facility is provided because some applications need a
    numeric error indication, but it has also enabled me to tidy up the way
    compile-time errors are handled in the POSIX wrapper.

16. Added VPATH=.libs to the makefile; this should help when building with one
    prefix path and installing with another. (Or so I'm told by someone who
    knows more about this stuff than I do.)

17. Added a new option, REG_DOTALL, to the POSIX function regcomp(). This
    passes PCRE_DOTALL to the pcre_compile() function, making the "." character
    match everything, including newlines. This is not POSIX-compatible, but
    somebody wanted the feature. From pcretest it can be activated by using
    both the P and the s flags.

18. AC_PROG_LIBTOOL appeared twice in Makefile.in. Removed one.

19. libpcre.pc was being incorrectly installed as executable.

20. A couple of places in pcretest check for end-of-line by looking for '\n';
    it now also looks for '\r' so that it will work unmodified on Windows.

21. Added Google's contributed C++ wrapper to the distribution.

22. Added some untidy missing memory free() calls in pcretest, to keep
    Electric Fence happy when testing.


To generate a diff of this commit:
cvs rdiff -r1.21 -r1.22 pkgsrc/devel/pcre/Makefile
cvs rdiff -r1.5 -r1.6 pkgsrc/devel/pcre/PLIST
cvs rdiff -r1.12 -r1.13 pkgsrc/devel/pcre/distinfo
cvs rdiff -r1.6 -r0 pkgsrc/devel/pcre/patches/patch-aa

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.