summaryrefslogtreecommitdiff
path: root/regext.c
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-08-12 21:06:31 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-08-12 21:06:31 +0200
commit0dbf3761f6b98e5c16c9bfa0306ae5d3257d081f (patch)
treeb122da5e29b81eb5489734f477afb645422980d0 /regext.c
Imported Upstream version 5.9.5upstream/5.9.5
Diffstat (limited to 'regext.c')
-rw-r--r--regext.c222
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