Initial copy of ext/ereg from php-src.

Further history before this can be found in the php-src repository: the
PRE_PHP7_EREG_MYSQL_REMOVALS tag indicates the last commit before this
extension was removed.

Author: LawnGnome

CREDITS

@@ -0,0 +1,2 @@
+ereg
+Rasmus Lerdorf, Jim Winstead, Jaakko Hyvätti

config.w32

@@ -0,0 +1,12 @@
+// $Id$
+// vim:ft=javascript
+
+ARG_WITH("ereg", "POSIX extended regular expressions", "yes");
+if (PHP_EREG != "no") {
+
+	EXTENSION("ereg", "ereg.c", PHP_EREG_SHARED, "-Dregexec=php_regexec -Dregerror=php_regerror -Dregfree=php_regfree -Dregcomp=php_regcomp -Iext/ereg/regex /DZEND_ENABLE_STATIC_TSRMLS_CACHE=1");
+	ADD_SOURCES("ext/ereg/regex", "regcomp.c regexec.c regerror.c regfree.c", "ereg");
+	AC_DEFINE('REGEX', 1, 'Bundled regex');
+	AC_DEFINE('HSREGEX', 1, 'Bundled regex');
+	PHP_INSTALL_HEADERS("ext/ereg", "php_ereg.h php_regex.h regex/");
+}

config0.m4

@@ -0,0 +1,57 @@
+dnl $Id$
+dnl config.m4 for extension ereg
+
+dnl
+dnl Check for regex library type
+dnl
+PHP_ARG_WITH(regex,,
+[  --with-regex=TYPE       Regex library type: system, php. [TYPE=php]
+                          WARNING: Do NOT use unless you know what you are doing!], php, no)
+
+case $PHP_REGEX in
+  system)
+    if test "$PHP_SAPI" = "apache" || test "$PHP_SAPI" = "apache2filter" || test "$PHP_SAPI" = "apache2handler"; then
+      REGEX_TYPE=php
+    else
+      REGEX_TYPE=system
+    fi
+    ;;
+  yes | php)
+    REGEX_TYPE=php
+    ;;
+  *)
+    REGEX_TYPE=php
+    AC_MSG_WARN([Invalid regex library type selected. Using default value: php])
+    ;;
+esac
+
+AC_MSG_CHECKING([which regex library to use])
+AC_MSG_RESULT([$REGEX_TYPE])
+
+if test "$REGEX_TYPE" = "php"; then
+  ereg_regex_sources="regex/regcomp.c regex/regexec.c regex/regerror.c regex/regfree.c"
+  ereg_regex_headers="regex/"
+  PHP_EREG_CFLAGS="-Dregexec=php_regexec -Dregerror=php_regerror -Dregfree=php_regfree -Dregcomp=php_regcomp"
+fi
+PHP_EREG_CFLAGS="$PHP_EREG_CFLAGS -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1"
+
+PHP_NEW_EXTENSION(ereg, ereg.c $ereg_regex_sources, no,,$PHP_EREG_CFLAGS)
+PHP_INSTALL_HEADERS([ext/ereg], [php_ereg.h php_regex.h $ereg_regex_headers])
+
+if test "$REGEX_TYPE" = "php"; then
+  AC_DEFINE(HAVE_REGEX_T_RE_MAGIC, 1, [ ])
+  AC_DEFINE(HSREGEX,1,[ ])
+  AC_DEFINE(REGEX,1,[ ])  
+  PHP_ADD_BUILD_DIR([$ext_builddir/regex], 1)
+  PHP_ADD_INCLUDE([$ext_srcdir/regex])
+elif test "$REGEX_TYPE" = "system"; then
+  AC_DEFINE(REGEX,0,[ ])
+  dnl Check if field re_magic exists in struct regex_t
+  AC_CACHE_CHECK([whether field re_magic exists in struct regex_t], ac_cv_regex_t_re_magic, [
+  AC_TRY_COMPILE([#include <sys/types.h>
+#include <regex.h>], [regex_t rt; rt.re_magic;],
+  [ac_cv_regex_t_re_magic=yes], [ac_cv_regex_t_re_magic=no])])
+  if test "$ac_cv_regex_t_re_magic" = "yes"; then
+    AC_DEFINE([HAVE_REGEX_T_RE_MAGIC], [ ], 1)   
+  fi 
+fi