Imported Upstream version 5.9.5upstream/5.9.5

1 files changed, 222 insertions, 0 deletions

diff --git a/regext.c b/regext.c
new file mode 100644
index 0000000..b1b957b
--- /dev/null
+++ b/regext.c
@@ -0,0 +1,222 @@
+/**********************************************************************
+  regext.c -  Oniguruma (regular expression library)
+**********************************************************************/
+/*-
+ * Copyright (c) 2002-2008  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#include "regint.h"
+
+static void
+conv_ext0be32(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = '\0';
+    *conv++ = '\0';
+    *conv++ = '\0';
+    *conv++ = *s++;
+  }
+}
+
+static void
+conv_ext0le32(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = *s++;
+    *conv++ = '\0';
+    *conv++ = '\0';
+    *conv++ = '\0';
+  }
+}
+
+static void
+conv_ext0be(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = '\0';
+    *conv++ = *s++;
+  }
+}
+
+static void
+conv_ext0le(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = *s++;
+    *conv++ = '\0';
+  }
+}
+
+static void
+conv_swap4bytes(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = s[3];
+    *conv++ = s[2];
+    *conv++ = s[1];
+    *conv++ = s[0];
+    s += 4;
+  }
+}
+
+static void
+conv_swap2bytes(const UChar* s, const UChar* end, UChar* conv)
+{
+  while (s < end) {
+    *conv++ = s[1];
+    *conv++ = s[0];
+    s += 2;
+  }
+}
+
+static int
+conv_encoding(OnigEncoding from, OnigEncoding to, const UChar* s, const UChar* end,
+              UChar** conv, UChar** conv_end)
+{
+  int len = end - s;
+
+  if (to == ONIG_ENCODING_UTF16_BE) {
+    if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
+      *conv = (UChar* )xmalloc(len * 2);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + (len * 2);
+      conv_ext0be(s, end, *conv);
+      return 0;
+    }
+    else if (from == ONIG_ENCODING_UTF16_LE) {
+    swap16:
+      *conv = (UChar* )xmalloc(len);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + len;
+      conv_swap2bytes(s, end, *conv);
+      return 0;
+    }
+  }
+  else if (to == ONIG_ENCODING_UTF16_LE) {
+    if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
+      *conv = (UChar* )xmalloc(len * 2);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + (len * 2);
+      conv_ext0le(s, end, *conv);
+      return 0;
+    }
+    else if (from == ONIG_ENCODING_UTF16_BE) {
+      goto swap16;
+    }
+  }
+  if (to == ONIG_ENCODING_UTF32_BE) {
+    if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
+      *conv = (UChar* )xmalloc(len * 4);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + (len * 4);
+      conv_ext0be32(s, end, *conv);
+      return 0;
+    }
+    else if (from == ONIG_ENCODING_UTF32_LE) {
+    swap32:
+      *conv = (UChar* )xmalloc(len);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + len;
+      conv_swap4bytes(s, end, *conv);
+      return 0;
+    }
+  }
+  else if (to == ONIG_ENCODING_UTF32_LE) {
+    if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
+      *conv = (UChar* )xmalloc(len * 4);
+      CHECK_NULL_RETURN_MEMERR(*conv);
+      *conv_end = *conv + (len * 4);
+      conv_ext0le32(s, end, *conv);
+      return 0;
+    }
+    else if (from == ONIG_ENCODING_UTF32_BE) {
+      goto swap32;
+    }
+  }
+
+  return ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION;
+}
+
+extern int
+onig_new_deluxe(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
+                OnigCompileInfo* ci, OnigErrorInfo* einfo)
+{
+  int r;
+  UChar *cpat, *cpat_end;
+
+  if (IS_NOT_NULL(einfo)) einfo->par = (UChar* )NULL;
+
+  if (ci->pattern_enc != ci->target_enc) {
+    r = conv_encoding(ci->pattern_enc, ci->target_enc, pattern, pattern_end,
+                      &cpat, &cpat_end);
+    if (r) return r;
+  }
+  else {
+    cpat     = (UChar* )pattern;
+    cpat_end = (UChar* )pattern_end;
+  }
+
+  *reg = (regex_t* )xmalloc(sizeof(regex_t));
+  if (IS_NULL(*reg)) {
+    r = ONIGERR_MEMORY;
+    goto err2;
+  }
+
+  r = onig_reg_init(*reg, ci->option, ci->case_fold_flag, ci->target_enc,
+		    ci->syntax);
+  if (r) goto err;
+
+  r = onig_compile(*reg, cpat, cpat_end, einfo);
+  if (r) {
+  err:
+    onig_free(*reg);
+    *reg = NULL;
+  }
+
+ err2:
+  if (cpat != pattern) xfree(cpat);
+
+  return r;
+}
+
+#ifdef USE_RECOMPILE_API
+extern int
+onig_recompile_deluxe(regex_t* reg, const UChar* pattern, const UChar* pattern_end,
+                      OnigCompileInfo* ci, OnigErrorInfo* einfo)
+{
+  int r;
+  regex_t *new_reg;
+
+  r = onig_new_deluxe(&new_reg, pattern, pattern_end, ci, einfo);
+  if (r) return r;
+  if (ONIG_STATE(reg) == ONIG_STATE_NORMAL) {
+    onig_transfer(reg, new_reg);
+  }
+  else {
+    onig_chain_link_add(reg, new_reg);
+  }
+  return 0;
+}
+#endif