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1 README file for PCRE (Perl-compatible regular expression library)
2 -----------------------------------------------------------------
3
4 The latest release of PCRE is always available from
5
6 ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-xxx.tar.gz
7
8 There is a mailing list for discussion about the development of PCRE at
9
10 pcre-dev@exim.org
11
12 Please read the NEWS file if you are upgrading from a previous release.
13 The contents of this README file are:
14
15 The PCRE APIs
16 Documentation for PCRE
17 Contributions by users of PCRE
18 Building PCRE on non-Unix systems
19 Building PCRE on Unix-like systems
20 Retrieving configuration information on Unix-like systems
21 Shared libraries on Unix-like systems
22 Cross-compiling on Unix-like systems
23 Using HP's ANSI C++ compiler (aCC)
24 Making new tarballs
25 Testing PCRE
26 Character tables
27 File manifest
28
29
30 The PCRE APIs
31 -------------
32
33 PCRE is written in C, and it has its own API. The distribution also includes a
34 set of C++ wrapper functions (see the pcrecpp man page for details), courtesy
35 of Google Inc.
36
37 In addition, there is a set of C wrapper functions that are based on the POSIX
38 regular expression API (see the pcreposix man page). These end up in the
39 library called libpcreposix. Note that this just provides a POSIX calling
40 interface to PCRE; the regular expressions themselves still follow Perl syntax
41 and semantics. The POSIX API is restricted, and does not give full access to
42 all of PCRE's facilities.
43
44 The header file for the POSIX-style functions is called pcreposix.h. The
45 official POSIX name is regex.h, but I did not want to risk possible problems
46 with existing files of that name by distributing it that way. To use PCRE with
47 an existing program that uses the POSIX API, pcreposix.h will have to be
48 renamed or pointed at by a link.
49
50 If you are using the POSIX interface to PCRE and there is already a POSIX regex
51 library installed on your system, as well as worrying about the regex.h header
52 file (as mentioned above), you must also take care when linking programs to
53 ensure that they link with PCRE's libpcreposix library. Otherwise they may pick
54 up the POSIX functions of the same name from the other library.
55
56 One way of avoiding this confusion is to compile PCRE with the addition of
57 -Dregcomp=PCREregcomp (and similarly for the other POSIX functions) to the
58 compiler flags (CFLAGS if you are using "configure" -- see below). This has the
59 effect of renaming the functions so that the names no longer clash. Of course,
60 you have to do the same thing for your applications, or write them using the
61 new names.
62
63
64 Documentation for PCRE
65 ----------------------
66
67 If you install PCRE in the normal way on a Unix-like system, you will end up
68 with a set of man pages whose names all start with "pcre". The one that is just
69 called "pcre" lists all the others. In addition to these man pages, the PCRE
70 documentation is supplied in two other forms:
71
72 1. There are files called doc/pcre.txt, doc/pcregrep.txt, and
73 doc/pcretest.txt in the source distribution. The first of these is a
74 concatenation of the text forms of all the section 3 man pages except
75 those that summarize individual functions. The other two are the text
76 forms of the section 1 man pages for the pcregrep and pcretest commands.
77 These text forms are provided for ease of scanning with text editors or
78 similar tools. They are installed in <prefix>/share/doc/pcre, where
79 <prefix> is the installation prefix (defaulting to /usr/local).
80
81 2. A set of files containing all the documentation in HTML form, hyperlinked
82 in various ways, and rooted in a file called index.html, is distributed in
83 doc/html and installed in <prefix>/share/doc/pcre/html.
84
85
86 Contributions by users of PCRE
87 ------------------------------
88
89 You can find contributions from PCRE users in the directory
90
91 ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/Contrib
92
93 There is a README file giving brief descriptions of what they are. Some are
94 complete in themselves; others are pointers to URLs containing relevant files.
95 Some of this material is likely to be well out-of-date. Several of the earlier
96 contributions provided support for compiling PCRE on various flavours of
97 Windows (I myself do not use Windows). Nowadays there is more Windows support
98 in the standard distribution, so these contibutions have been archived.
99
100
101 Building PCRE on non-Unix systems
102 ---------------------------------
103
104 For a non-Unix system, please read the comments in the file NON-UNIX-USE,
105 though if your system supports the use of "configure" and "make" you may be
106 able to build PCRE in the same way as for Unix-like systems.
107
108 PCRE has been compiled on many different operating systems. It should be
109 straightforward to build PCRE on any system that has a Standard C compiler and
110 library, because it uses only Standard C functions.
111
112
113 Building PCRE on Unix-like systems
114 ----------------------------------
115
116 If you are using HP's ANSI C++ compiler (aCC), please see the special note
117 in the section entitled "Using HP's ANSI C++ compiler (aCC)" below.
118
119 The following instructions assume the use of the widely used "configure, make,
120 make install" process. There is also some experimental support for "cmake" in
121 the PCRE distribution, but it is incomplete and not documented. However, if you
122 are a "cmake" user, you might want to try it.
123
124 To build PCRE on a Unix-like system, first run the "configure" command from the
125 PCRE distribution directory, with your current directory set to the directory
126 where you want the files to be created. This command is a standard GNU
127 "autoconf" configuration script, for which generic instructions are supplied in
128 the file INSTALL.
129
130 Most commonly, people build PCRE within its own distribution directory, and in
131 this case, on many systems, just running "./configure" is sufficient. However,
132 the usual methods of changing standard defaults are available. For example:
133
134 CFLAGS='-O2 -Wall' ./configure --prefix=/opt/local
135
136 specifies that the C compiler should be run with the flags '-O2 -Wall' instead
137 of the default, and that "make install" should install PCRE under /opt/local
138 instead of the default /usr/local.
139
140 If you want to build in a different directory, just run "configure" with that
141 directory as current. For example, suppose you have unpacked the PCRE source
142 into /source/pcre/pcre-xxx, but you want to build it in /build/pcre/pcre-xxx:
143
144 cd /build/pcre/pcre-xxx
145 /source/pcre/pcre-xxx/configure
146
147 PCRE is written in C and is normally compiled as a C library. However, it is
148 possible to build it as a C++ library, though the provided building apparatus
149 does not have any features to support this.
150
151 There are some optional features that can be included or omitted from the PCRE
152 library. You can read more about them in the pcrebuild man page.
153
154 . If you want to suppress the building of the C++ wrapper library, you can add
155 --disable-cpp to the "configure" command. Otherwise, when "configure" is run,
156 it will try to find a C++ compiler and C++ header files, and if it succeeds,
157 it will try to build the C++ wrapper.
158
159 . If you want to make use of the support for UTF-8 character strings in PCRE,
160 you must add --enable-utf8 to the "configure" command. Without it, the code
161 for handling UTF-8 is not included in the library. (Even when included, it
162 still has to be enabled by an option at run time.)
163
164 . If, in addition to support for UTF-8 character strings, you want to include
165 support for the \P, \p, and \X sequences that recognize Unicode character
166 properties, you must add --enable-unicode-properties to the "configure"
167 command. This adds about 30K to the size of the library (in the form of a
168 property table); only the basic two-letter properties such as Lu are
169 supported.
170
171 . You can build PCRE to recognize either CR or LF or the sequence CRLF or any
172 of the preceding, or any of the Unicode newline sequences as indicating the
173 end of a line. Whatever you specify at build time is the default; the caller
174 of PCRE can change the selection at run time. The default newline indicator
175 is a single LF character (the Unix standard). You can specify the default
176 newline indicator by adding --enable-newline-is-cr or --enable-newline-is-lf
177 or --enable-newline-is-crlf or --enable-newline-is-anycrlf or
178 --enable-newline-is-any to the "configure" command, respectively.
179
180 If you specify --enable-newline-is-cr or --enable-newline-is-crlf, some of
181 the standard tests will fail, because the lines in the test files end with
182 LF. Even if the files are edited to change the line endings, there are likely
183 to be some failures. With --enable-newline-is-anycrlf or
184 --enable-newline-is-any, many tests should succeed, but there may be some
185 failures.
186
187 . By default, the sequence \R in a pattern matches any Unicode line ending
188 sequence. This is independent of the option specifying what PCRE considers to
189 be the end of a line (see above). However, the caller of PCRE can restrict \R
190 to match only CR, LF, or CRLF. You can make this the default by adding
191 --enable-bsr-anycrlf to the "configure" command (bsr = "backslash R").
192
193 . When called via the POSIX interface, PCRE uses malloc() to get additional
194 storage for processing capturing parentheses if there are more than 10 of
195 them in a pattern. You can increase this threshold by setting, for example,
196
197 --with-posix-malloc-threshold=20
198
199 on the "configure" command.
200
201 . PCRE has a counter that can be set to limit the amount of resources it uses.
202 If the limit is exceeded during a match, the match fails. The default is ten
203 million. You can change the default by setting, for example,
204
205 --with-match-limit=500000
206
207 on the "configure" command. This is just the default; individual calls to
208 pcre_exec() can supply their own value. There is more discussion on the
209 pcreapi man page.
210
211 . There is a separate counter that limits the depth of recursive function calls
212 during a matching process. This also has a default of ten million, which is
213 essentially "unlimited". You can change the default by setting, for example,
214
215 --with-match-limit-recursion=500000
216
217 Recursive function calls use up the runtime stack; running out of stack can
218 cause programs to crash in strange ways. There is a discussion about stack
219 sizes in the pcrestack man page.
220
221 . The default maximum compiled pattern size is around 64K. You can increase
222 this by adding --with-link-size=3 to the "configure" command. You can
223 increase it even more by setting --with-link-size=4, but this is unlikely
224 ever to be necessary. Increasing the internal link size will reduce
225 performance.
226
227 . You can build PCRE so that its internal match() function that is called from
228 pcre_exec() does not call itself recursively. Instead, it uses memory blocks
229 obtained from the heap via the special functions pcre_stack_malloc() and
230 pcre_stack_free() to save data that would otherwise be saved on the stack. To
231 build PCRE like this, use
232
233 --disable-stack-for-recursion
234
235 on the "configure" command. PCRE runs more slowly in this mode, but it may be
236 necessary in environments with limited stack sizes. This applies only to the
237 pcre_exec() function; it does not apply to pcre_dfa_exec(), which does not
238 use deeply nested recursion. There is a discussion about stack sizes in the
239 pcrestack man page.
240
241 . For speed, PCRE uses four tables for manipulating and identifying characters
242 whose code point values are less than 256. By default, it uses a set of
243 tables for ASCII encoding that is part of the distribution. If you specify
244
245 --enable-rebuild-chartables
246
247 a program called dftables is compiled and run in the default C locale when
248 you obey "make". It builds a source file called pcre_chartables.c. If you do
249 not specify this option, pcre_chartables.c is created as a copy of
250 pcre_chartables.c.dist. See "Character tables" below for further information.
251
252 . It is possible to compile PCRE for use on systems that use EBCDIC as their
253 default character code (as opposed to ASCII) by specifying
254
255 --enable-ebcdic
256
257 This automatically implies --enable-rebuild-chartables (see above).
258
259 The "configure" script builds the following files for the basic C library:
260
261 . Makefile is the makefile that builds the library
262 . config.h contains build-time configuration options for the library
263 . pcre.h is the public PCRE header file
264 . pcre-config is a script that shows the settings of "configure" options
265 . libpcre.pc is data for the pkg-config command
266 . libtool is a script that builds shared and/or static libraries
267 . RunTest is a script for running tests on the basic C library
268 . RunGrepTest is a script for running tests on the pcregrep command
269
270 Versions of config.h and pcre.h are distributed in the PCRE tarballs under
271 the names config.h.generic and pcre.h.generic. These are provided for the
272 benefit of those who have to built PCRE without the benefit of "configure". If
273 you use "configure", the .generic versions are not used.
274
275 If a C++ compiler is found, the following files are also built:
276
277 . libpcrecpp.pc is data for the pkg-config command
278 . pcrecpparg.h is a header file for programs that call PCRE via the C++ wrapper
279 . pcre_stringpiece.h is the header for the C++ "stringpiece" functions
280
281 The "configure" script also creates config.status, which is an executable
282 script that can be run to recreate the configuration, and config.log, which
283 contains compiler output from tests that "configure" runs.
284
285 Once "configure" has run, you can run "make". It builds two libraries, called
286 libpcre and libpcreposix, a test program called pcretest, a demonstration
287 program called pcredemo, and the pcregrep command. If a C++ compiler was found
288 on your system, "make" also builds the C++ wrapper library, which is called
289 libpcrecpp, and some test programs called pcrecpp_unittest,
290 pcre_scanner_unittest, and pcre_stringpiece_unittest. Building the C++ wrapper
291 can be disabled by adding --disable-cpp to the "configure" command.
292
293 The command "make check" runs all the appropriate tests. Details of the PCRE
294 tests are given below in a separate section of this document.
295
296 You can use "make install" to install PCRE into live directories on your
297 system. The following are installed (file names are all relative to the
298 <prefix> that is set when "configure" is run):
299
300 Commands (bin):
301 pcretest
302 pcregrep
303 pcre-config
304
305 Libraries (lib):
306 libpcre
307 libpcreposix
308 libpcrecpp (if C++ support is enabled)
309
310 Configuration information (lib/pkgconfig):
311 libpcre.pc
312 libpcrecpp.pc (if C++ support is enabled)
313
314 Header files (include):
315 pcre.h
316 pcreposix.h
317 pcre_scanner.h )
318 pcre_stringpiece.h ) if C++ support is enabled
319 pcrecpp.h )
320 pcrecpparg.h )
321
322 Man pages (share/man/man{1,3}):
323 pcregrep.1
324 pcretest.1
325 pcre.3
326 pcre*.3 (lots more pages, all starting "pcre")
327
328 HTML documentation (share/doc/pcre/html):
329 index.html
330 *.html (lots more pages, hyperlinked from index.html)
331
332 Text file documentation (share/doc/pcre):
333 AUTHORS
334 COPYING
335 ChangeLog
336 LICENCE
337 NEWS
338 README
339 pcre.txt (a concatenation of the man(3) pages)
340 pcretest.txt the pcretest man page
341 pcregrep.txt the pcregrep man page
342
343 Note that the pcredemo program that is built by "configure" is *not* installed
344 anywhere. It is a demonstration for programmers wanting to use PCRE.
345
346 If you want to remove PCRE from your system, you can run "make uninstall".
347 This removes all the files that "make install" installed. However, it does not
348 remove any directories, because these are often shared with other programs.
349
350
351 Retrieving configuration information on Unix-like systems
352 ---------------------------------------------------------
353
354 Running "make install" installs the command pcre-config, which can be used to
355 recall information about the PCRE configuration and installation. For example:
356
357 pcre-config --version
358
359 prints the version number, and
360
361 pcre-config --libs
362
363 outputs information about where the library is installed. This command can be
364 included in makefiles for programs that use PCRE, saving the programmer from
365 having to remember too many details.
366
367 The pkg-config command is another system for saving and retrieving information
368 about installed libraries. Instead of separate commands for each library, a
369 single command is used. For example:
370
371 pkg-config --cflags pcre
372
373 The data is held in *.pc files that are installed in a directory called
374 <prefix>/lib/pkgconfig.
375
376
377 Shared libraries on Unix-like systems
378 -------------------------------------
379
380 The default distribution builds PCRE as shared libraries and static libraries,
381 as long as the operating system supports shared libraries. Shared library
382 support relies on the "libtool" script which is built as part of the
383 "configure" process.
384
385 The libtool script is used to compile and link both shared and static
386 libraries. They are placed in a subdirectory called .libs when they are newly
387 built. The programs pcretest and pcregrep are built to use these uninstalled
388 libraries (by means of wrapper scripts in the case of shared libraries). When
389 you use "make install" to install shared libraries, pcregrep and pcretest are
390 automatically re-built to use the newly installed shared libraries before being
391 installed themselves. However, the versions left in the build directory still
392 use the uninstalled libraries.
393
394 To build PCRE using static libraries only you must use --disable-shared when
395 configuring it. For example:
396
397 ./configure --prefix=/usr/gnu --disable-shared
398
399 Then run "make" in the usual way. Similarly, you can use --disable-static to
400 build only shared libraries.
401
402
403 Cross-compiling on Unix-like systems
404 ------------------------------------
405
406 You can specify CC and CFLAGS in the normal way to the "configure" command, in
407 order to cross-compile PCRE for some other host. However, you should NOT
408 specify --enable-rebuild-chartables, because if you do, the dftables.c source
409 file is compiled and run on the local host, in order to generate the inbuilt
410 character tables (the pcre_chartables.c file). This will probably not work,
411 because dftables.c needs to be compiled with the local compiler, not the cross
412 compiler.
413
414 When --enable-rebuild-chartables is not specified, pcre_chartables.c is created
415 by making a copy of pcre_chartables.c.dist, which is a default set of tables
416 that assumes ASCII code. Cross-compiling with the default tables should not be
417 a problem.
418
419 If you need to modify the character tables when cross-compiling, you should
420 move pcre_chartables.c.dist out of the way, then compile dftables.c by hand and
421 run it on the local host to make a new version of pcre_chartables.c.dist.
422 Then when you cross-compile PCRE this new version of the tables will be used.
423
424
425 Using HP's ANSI C++ compiler (aCC)
426 ----------------------------------
427
428 Unless C++ support is disabled by specifying the "--disable-cpp" option of the
429 "configure" script, you must include the "-AA" option in the CXXFLAGS
430 environment variable in order for the C++ components to compile correctly.
431
432 Also, note that the aCC compiler on PA-RISC platforms may have a defect whereby
433 needed libraries fail to get included when specifying the "-AA" compiler
434 option. If you experience unresolved symbols when linking the C++ programs,
435 use the workaround of specifying the following environment variable prior to
436 running the "configure" script:
437
438 CXXLDFLAGS="-lstd_v2 -lCsup_v2"
439
440
441 Making new tarballs
442 -------------------
443
444 The command "make dist" creates three PCRE tarballs, in tar.gz, tar.bz2, and
445 zip formats. The command "make distcheck" does the same, but then does a trial
446 build of the new distribution to ensure that it works.
447
448 If you have modified any of the man page sources in the doc directory, you
449 should first run the PrepareRelease script before making a distribution. This
450 script creates the .txt and HTML forms of the documentation from the man pages.
451
452
453 Testing PCRE
454 ------------
455
456 To test the basic PCRE library on a Unix system, run the RunTest script that is
457 created by the configuring process. There is also a script called RunGrepTest
458 that tests the options of the pcregrep command. If the C++ wrapper library is
459 built, three test programs called pcrecpp_unittest, pcre_scanner_unittest, and
460 pcre_stringpiece_unittest are also built.
461
462 Both the scripts and all the program tests are run if you obey "make check" or
463 "make test". For other systems, see the instructions in NON-UNIX-USE.
464
465 The RunTest script runs the pcretest test program (which is documented in its
466 own man page) on each of the testinput files in the testdata directory in
467 turn, and compares the output with the contents of the corresponding testoutput
468 files. A file called testtry is used to hold the main output from pcretest
469 (testsavedregex is also used as a working file). To run pcretest on just one of
470 the test files, give its number as an argument to RunTest, for example:
471
472 RunTest 2
473
474 The first test file can also be fed directly into the perltest.pl script to
475 check that Perl gives the same results. The only difference you should see is
476 in the first few lines, where the Perl version is given instead of the PCRE
477 version.
478
479 The second set of tests check pcre_fullinfo(), pcre_info(), pcre_study(),
480 pcre_copy_substring(), pcre_get_substring(), pcre_get_substring_list(), error
481 detection, and run-time flags that are specific to PCRE, as well as the POSIX
482 wrapper API. It also uses the debugging flags to check some of the internals of
483 pcre_compile().
484
485 If you build PCRE with a locale setting that is not the standard C locale, the
486 character tables may be different (see next paragraph). In some cases, this may
487 cause failures in the second set of tests. For example, in a locale where the
488 isprint() function yields TRUE for characters in the range 128-255, the use of
489 [:isascii:] inside a character class defines a different set of characters, and
490 this shows up in this test as a difference in the compiled code, which is being
491 listed for checking. Where the comparison test output contains [\x00-\x7f] the
492 test will contain [\x00-\xff], and similarly in some other cases. This is not a
493 bug in PCRE.
494
495 The third set of tests checks pcre_maketables(), the facility for building a
496 set of character tables for a specific locale and using them instead of the
497 default tables. The tests make use of the "fr_FR" (French) locale. Before
498 running the test, the script checks for the presence of this locale by running
499 the "locale" command. If that command fails, or if it doesn't include "fr_FR"
500 in the list of available locales, the third test cannot be run, and a comment
501 is output to say why. If running this test produces instances of the error
502
503 ** Failed to set locale "fr_FR"
504
505 in the comparison output, it means that locale is not available on your system,
506 despite being listed by "locale". This does not mean that PCRE is broken.
507
508 [If you are trying to run this test on Windows, you may be able to get it to
509 work by changing "fr_FR" to "french" everywhere it occurs.]
510
511 The fourth test checks the UTF-8 support. It is not run automatically unless
512 PCRE is built with UTF-8 support. To do this you must set --enable-utf8 when
513 running "configure". This file can be also fed directly to the perltest script,
514 provided you are running Perl 5.8 or higher. (For Perl 5.6, a small patch,
515 commented in the script, can be be used.)
516
517 The fifth test checks error handling with UTF-8 encoding, and internal UTF-8
518 features of PCRE that are not relevant to Perl.
519
520 The sixth test checks the support for Unicode character properties. It it not
521 run automatically unless PCRE is built with Unicode property support. To to
522 this you must set --enable-unicode-properties when running "configure".
523
524 The seventh, eighth, and ninth tests check the pcre_dfa_exec() alternative
525 matching function, in non-UTF-8 mode, UTF-8 mode, and UTF-8 mode with Unicode
526 property support, respectively. The eighth and ninth tests are not run
527 automatically unless PCRE is build with the relevant support.
528
529
530 Character tables
531 ----------------
532
533 For speed, PCRE uses four tables for manipulating and identifying characters
534 whose code point values are less than 256. The final argument of the
535 pcre_compile() function is a pointer to a block of memory containing the
536 concatenated tables. A call to pcre_maketables() can be used to generate a set
537 of tables in the current locale. If the final argument for pcre_compile() is
538 passed as NULL, a set of default tables that is built into the binary is used.
539
540 The source file called pcre_chartables.c contains the default set of tables. By
541 default, this is created as a copy of pcre_chartables.c.dist, which contains
542 tables for ASCII coding. However, if --enable-rebuild-chartables is specified
543 for ./configure, a different version of pcre_chartables.c is built by the
544 program dftables (compiled from dftables.c), which uses the ANSI C character
545 handling functions such as isalnum(), isalpha(), isupper(), islower(), etc. to
546 build the table sources. This means that the default C locale which is set for
547 your system will control the contents of these default tables. You can change
548 the default tables by editing pcre_chartables.c and then re-building PCRE. If
549 you do this, you should take care to ensure that the file does not get
550 automatically re-generated. The best way to do this is to move
551 pcre_chartables.c.dist out of the way and replace it with your customized
552 tables.
553
554 When the dftables program is run as a result of --enable-rebuild-chartables,
555 it uses the default C locale that is set on your system. It does not pay
556 attention to the LC_xxx environment variables. In other words, it uses the
557 system's default locale rather than whatever the compiling user happens to have
558 set. If you really do want to build a source set of character tables in a
559 locale that is specified by the LC_xxx variables, you can run the dftables
560 program by hand with the -L option. For example:
561
562 ./dftables -L pcre_chartables.c.special
563
564 The first two 256-byte tables provide lower casing and case flipping functions,
565 respectively. The next table consists of three 32-byte bit maps which identify
566 digits, "word" characters, and white space, respectively. These are used when
567 building 32-byte bit maps that represent character classes for code points less
568 than 256.
569
570 The final 256-byte table has bits indicating various character types, as
571 follows:
572
573 1 white space character
574 2 letter
575 4 decimal digit
576 8 hexadecimal digit
577 16 alphanumeric or '_'
578 128 regular expression metacharacter or binary zero
579
580 You should not alter the set of characters that contain the 128 bit, as that
581 will cause PCRE to malfunction.
582
583
584 File manifest
585 -------------
586
587 The distribution should contain the following files:
588
589 (A) Source files of the PCRE library functions and their headers:
590
591 dftables.c auxiliary program for building pcre_chartables.c
592 when --enable-rebuild-chartables is specified
593
594 pcre_chartables.c.dist a default set of character tables that assume ASCII
595 coding; used, unless --enable-rebuild-chartables is
596 specified, by copying to pcre_chartables.c
597
598 pcreposix.c )
599 pcre_compile.c )
600 pcre_config.c )
601 pcre_dfa_exec.c )
602 pcre_exec.c )
603 pcre_fullinfo.c )
604 pcre_get.c ) sources for the functions in the library,
605 pcre_globals.c ) and some internal functions that they use
606 pcre_info.c )
607 pcre_maketables.c )
608 pcre_newline.c )
609 pcre_ord2utf8.c )
610 pcre_refcount.c )
611 pcre_study.c )
612 pcre_tables.c )
613 pcre_try_flipped.c )
614 pcre_ucp_searchfuncs.c )
615 pcre_valid_utf8.c )
616 pcre_version.c )
617 pcre_xclass.c )
618 pcre_printint.src ) debugging function that is #included in pcretest,
619 ) and can also be #included in pcre_compile()
620 pcre.h.in template for pcre.h when built by "configure"
621 pcreposix.h header for the external POSIX wrapper API
622 pcre_internal.h header for internal use
623 ucp.h ) headers concerned with
624 ucpinternal.h ) Unicode property handling
625 ucptable.h ) (this one is the data table)
626
627 config.h.in template for config.h, which is built by "configure"
628
629 pcrecpp.h public header file for the C++ wrapper
630 pcrecpparg.h.in template for another C++ header file
631 pcre_scanner.h public header file for C++ scanner functions
632 pcrecpp.cc )
633 pcre_scanner.cc ) source for the C++ wrapper library
634
635 pcre_stringpiece.h.in template for pcre_stringpiece.h, the header for the
636 C++ stringpiece functions
637 pcre_stringpiece.cc source for the C++ stringpiece functions
638
639 (B) Source files for programs that use PCRE:
640
641 pcredemo.c simple demonstration of coding calls to PCRE
642 pcregrep.c source of a grep utility that uses PCRE
643 pcretest.c comprehensive test program
644
645 (C) Auxiliary files:
646
647 132html script to turn "man" pages into HTML
648 AUTHORS information about the author of PCRE
649 ChangeLog log of changes to the code
650 CleanTxt script to clean nroff output for txt man pages
651 Detrail script to remove trailing spaces
652 HACKING some notes about the internals of PCRE
653 INSTALL generic installation instructions
654 LICENCE conditions for the use of PCRE
655 COPYING the same, using GNU's standard name
656 Makefile.in ) template for Unix Makefile, which is built by
657 ) "configure"
658 Makefile.am ) the automake input that was used to create
659 ) Makefile.in
660 NEWS important changes in this release
661 NON-UNIX-USE notes on building PCRE on non-Unix systems
662 PrepareRelease script to make preparations for "make dist"
663 README this file
664 RunTest a Unix shell script for running tests
665 RunGrepTest a Unix shell script for pcregrep tests
666 aclocal.m4 m4 macros (generated by "aclocal")
667 config.guess ) files used by libtool,
668 config.sub ) used only when building a shared library
669 configure a configuring shell script (built by autoconf)
670 configure.ac ) the autoconf input that was used to build
671 ) "configure" and config.h
672 depcomp ) script to find program dependencies, generated by
673 ) automake
674 doc/*.3 man page sources for the PCRE functions
675 doc/*.1 man page sources for pcregrep and pcretest
676 doc/index.html.src the base HTML page
677 doc/html/* HTML documentation
678 doc/pcre.txt plain text version of the man pages
679 doc/pcretest.txt plain text documentation of test program
680 doc/perltest.txt plain text documentation of Perl test program
681 install-sh a shell script for installing files
682 libpcre.pc.in template for libpcre.pc for pkg-config
683 libpcrecpp.pc.in template for libpcrecpp.pc for pkg-config
684 ltmain.sh file used to build a libtool script
685 missing ) common stub for a few missing GNU programs while
686 ) installing, generated by automake
687 mkinstalldirs script for making install directories
688 perltest.pl Perl test program
689 pcre-config.in source of script which retains PCRE information
690 pcrecpp_unittest.cc )
691 pcre_scanner_unittest.cc ) test programs for the C++ wrapper
692 pcre_stringpiece_unittest.cc )
693 testdata/testinput* test data for main library tests
694 testdata/testoutput* expected test results
695 testdata/grep* input and output for pcregrep tests
696
697 (D) Auxiliary files for cmake support
698
699 CMakeLists.txt
700 config-cmake.h.in
701
702 (E) Auxiliary files for VPASCAL
703
704 makevp.bat
705 makevp_c.txt
706 makevp_l.txt
707 pcregexp.pas
708
709 (F) Auxiliary files for building PCRE "by hand"
710
711 pcre.h.generic ) a version of the public PCRE header file
712 ) for use in non-"configure" environments
713 config.h.generic ) a version of config.h for use in non-"configure"
714 ) environments
715
716 (F) Miscellaneous
717
718 RunTest.bat a script for running tests under Windows
719
720 Philip Hazel
721 Email local part: ph10
722 Email domain: cam.ac.uk
723 Last updated: 17 September 2007

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