added pcre16 project

git-svn-id: http://svn.miranda-ng.org/main/trunk@10019 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 130 insertions, 0 deletions

diff --git a/plugins/Pcre16/src/pcre16_utf16_utils.c b/plugins/Pcre16/src/pcre16_utf16_utils.c
new file mode 100644
index 0000000000..49ced0c0b1
--- /dev/null
+++ b/plugins/Pcre16/src/pcre16_utf16_utils.c
@@ -0,0 +1,130 @@
+/*************************************************
+*      Perl-Compatible Regular Expressions       *
+*************************************************/
+
+/* PCRE is a library of functions to support regular expressions whose syntax
+and semantics are as close as possible to those of the Perl 5 language.
+
+                       Written by Philip Hazel
+           Copyright (c) 1997-2012 University of Cambridge
+
+-----------------------------------------------------------------------------
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+
+    * 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 of Cambridge 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+-----------------------------------------------------------------------------
+*/
+
+
+/* This module contains a function for converting any UTF-16 character
+strings to host byte order. */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Generate code with 16 bit character support. */
+#define COMPILE_PCRE16
+
+#include "pcre_internal.h"
+
+/*************************************************
+*  Convert any UTF-16 string to host byte order  *
+*************************************************/
+
+/* This function takes an UTF-16 string and converts
+it to host byte order. The length can be explicitly set,
+or automatically detected for zero terminated strings.
+BOMs can be kept or discarded during the conversion.
+Conversion can be done in place (output == input).
+
+Arguments:
+  output     the output buffer, its size must be greater
+             or equal than the input string
+  input      any UTF-16 string
+  length     the number of 16-bit units in the input string
+             can be less than zero for zero terminated strings
+  host_byte_order
+             A non-zero value means the input is in host byte
+             order, which can be dynamically changed by BOMs later.
+             Initially it contains the starting byte order and returns
+             with the last byte order so it can be used for stream
+             processing. It can be NULL, which set the host byte
+             order mode by default.
+  keep_boms  for a non-zero value, the BOM (0xfeff) characters
+             are copied as well
+
+Returns:     the number of 16-bit units placed into the output buffer,
+             including the zero-terminator
+*/
+
+int
+pcre16_utf16_to_host_byte_order(PCRE_UCHAR16 *output, PCRE_SPTR16 input,
+  int length, int *host_byte_order, int keep_boms)
+{
+#ifdef SUPPORT_UTF
+/* This function converts any UTF-16 string to host byte order and optionally
+removes any Byte Order Marks (BOMS). Returns with the remainig length. */
+int host_bo = host_byte_order != NULL ? *host_byte_order : 1;
+pcre_uchar *optr = (pcre_uchar *)output;
+const pcre_uchar *iptr = (const pcre_uchar *)input;
+const pcre_uchar *end;
+/* The c variable must be unsigned. */
+register pcre_uchar c;
+
+if (length < 0)
+  length = STRLEN_UC(iptr) + 1;
+end = iptr + length;
+
+while (iptr < end)
+  {
+  c = *iptr++;
+  if (c == 0xfeff || c == 0xfffe)
+    {
+    /* Detecting the byte order of the machine is unnecessary, it is
+    enough to know that the UTF-16 string has the same byte order or not. */
+    host_bo = c == 0xfeff;
+    if (keep_boms != 0)
+      *optr++ = 0xfeff;
+    else
+      length--;
+    }
+  else
+    *optr++ = host_bo ? c : ((c >> 8) | (c << 8)); /* Flip bytes if needed. */
+  }
+if (host_byte_order != NULL)
+  *host_byte_order = host_bo;
+
+#else /* Not SUPPORT_UTF */
+(void)(output);  /* Keep picky compilers happy */
+(void)(input);
+(void)(keep_boms);
+(void)(host_byte_order);
+#endif /* SUPPORT_UTF */
+return length;
+}
+
+/* End of pcre16_utf16_utils.c */