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Diffstat (limited to 'doc/html/README.txt')
| -rw-r--r-- | doc/html/README.txt | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/doc/html/README.txt b/doc/html/README.txt index 2a26f9d..ff9a6af 100644 --- a/doc/html/README.txt +++ b/doc/html/README.txt @@ -1,9 +1,11 @@ README file for PCRE2 (Perl-compatible regular expression library) ------------------------------------------------------------------ -PCRE2 is a re-working of the original PCRE library to provide an entirely new -API. The latest release of PCRE2 is always available in three alternative -formats from: +PCRE2 is a re-working of the original PCRE1 library to provide an entirely new +API. Since its initial release in 2015, there has been further development of +the code and it now differs from PCRE1 in more than just the API. There are new +features and the internals have been improved. The latest release of PCRE2 is +always available in three alternative formats from: ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre2-xxx.tar.gz ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre2-xxx.tar.bz2 @@ -39,15 +41,15 @@ The PCRE2 APIs PCRE2 is written in C, and it has its own API. There are three sets of functions, one for the 8-bit library, which processes strings of bytes, one for the 16-bit library, which processes strings of 16-bit values, and one for the -32-bit library, which processes strings of 32-bit values. There are no C++ -wrappers. +32-bit library, which processes strings of 32-bit values. Unlike PCRE1, there +are no C++ wrappers. -In addition, the distribution contains a set of C wrapper functions for the -8-bit library that are based on the POSIX regular expression API (see the -pcre2posix man page). These are built into a library called libpcre2-posix. -Note that this just provides a POSIX calling interface to PCRE2; the regular -expressions themselves still follow Perl syntax and semantics. The POSIX API is -restricted, and does not give full access to all of PCRE2's facilities. +The distribution does contain a set of C wrapper functions for the 8-bit +library that are based on the POSIX regular expression API (see the pcre2posix +man page). These are built into a library called libpcre2-posix. Note that this +just provides a POSIX calling interface to PCRE2; the regular expressions +themselves still follow Perl syntax and semantics. The POSIX API is restricted, +and does not give full access to all of PCRE2's facilities. The header file for the POSIX-style functions is called pcre2posix.h. The official POSIX name is regex.h, but I did not want to risk possible problems @@ -890,4 +892,4 @@ The distribution should contain the files listed below. Philip Hazel Email local part: ph10 Email domain: cam.ac.uk -Last updated: 03 March 2019 +Last updated: 16 April 2019 |