--- /dev/null
+/*************************************************
+* 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
+ Original API code Copyright (c) 1997-2012 University of Cambridge
+ New API code Copyright (c) 2016-2018 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.
+-----------------------------------------------------------------------------
+*/
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "pcre2_internal.h"
+
+
+/*************************************************
+* Return info about compiled pattern *
+*************************************************/
+
+/*
+Arguments:
+ code points to compiled code
+ what what information is required
+ where where to put the information; if NULL, return length
+
+Returns: 0 when data returned
+ > 0 when length requested
+ < 0 on error or unset value
+*/
+
+PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION
+pcre2_pattern_info(const pcre2_code *code, uint32_t what, void *where)
+{
+const pcre2_real_code *re = (pcre2_real_code *)code;
+
+if (where == NULL) /* Requests field length */
+ {
+ switch(what)
+ {
+ case PCRE2_INFO_ALLOPTIONS:
+ case PCRE2_INFO_ARGOPTIONS:
+ case PCRE2_INFO_BACKREFMAX:
+ case PCRE2_INFO_BSR:
+ case PCRE2_INFO_CAPTURECOUNT:
+ case PCRE2_INFO_DEPTHLIMIT:
+ case PCRE2_INFO_EXTRAOPTIONS:
+ case PCRE2_INFO_FIRSTCODETYPE:
+ case PCRE2_INFO_FIRSTCODEUNIT:
+ case PCRE2_INFO_HASBACKSLASHC:
+ case PCRE2_INFO_HASCRORLF:
+ case PCRE2_INFO_HEAPLIMIT:
+ case PCRE2_INFO_JCHANGED:
+ case PCRE2_INFO_LASTCODETYPE:
+ case PCRE2_INFO_LASTCODEUNIT:
+ case PCRE2_INFO_MATCHEMPTY:
+ case PCRE2_INFO_MATCHLIMIT:
+ case PCRE2_INFO_MAXLOOKBEHIND:
+ case PCRE2_INFO_MINLENGTH:
+ case PCRE2_INFO_NAMEENTRYSIZE:
+ case PCRE2_INFO_NAMECOUNT:
+ case PCRE2_INFO_NEWLINE:
+ return sizeof(uint32_t);
+
+ case PCRE2_INFO_FIRSTBITMAP:
+ return sizeof(const uint8_t *);
+
+ case PCRE2_INFO_JITSIZE:
+ case PCRE2_INFO_SIZE:
+ case PCRE2_INFO_FRAMESIZE:
+ return sizeof(size_t);
+
+ case PCRE2_INFO_NAMETABLE:
+ return sizeof(PCRE2_SPTR);
+ }
+ }
+
+if (re == NULL) return PCRE2_ERROR_NULL;
+
+/* Check that the first field in the block is the magic number. If it is not,
+return with PCRE2_ERROR_BADMAGIC. */
+
+if (re->magic_number != MAGIC_NUMBER) return PCRE2_ERROR_BADMAGIC;
+
+/* Check that this pattern was compiled in the correct bit mode */
+
+if ((re->flags & (PCRE2_CODE_UNIT_WIDTH/8)) == 0) return PCRE2_ERROR_BADMODE;
+
+switch(what)
+ {
+ case PCRE2_INFO_ALLOPTIONS:
+ *((uint32_t *)where) = re->overall_options;
+ break;
+
+ case PCRE2_INFO_ARGOPTIONS:
+ *((uint32_t *)where) = re->compile_options;
+ break;
+
+ case PCRE2_INFO_BACKREFMAX:
+ *((uint32_t *)where) = re->top_backref;
+ break;
+
+ case PCRE2_INFO_BSR:
+ *((uint32_t *)where) = re->bsr_convention;
+ break;
+
+ case PCRE2_INFO_CAPTURECOUNT:
+ *((uint32_t *)where) = re->top_bracket;
+ break;
+
+ case PCRE2_INFO_DEPTHLIMIT:
+ *((uint32_t *)where) = re->limit_depth;
+ if (re->limit_depth == UINT32_MAX) return PCRE2_ERROR_UNSET;
+ break;
+
+ case PCRE2_INFO_EXTRAOPTIONS:
+ *((uint32_t *)where) = re->extra_options;
+ break;
+
+ case PCRE2_INFO_FIRSTCODETYPE:
+ *((uint32_t *)where) = ((re->flags & PCRE2_FIRSTSET) != 0)? 1 :
+ ((re->flags & PCRE2_STARTLINE) != 0)? 2 : 0;
+ break;
+
+ case PCRE2_INFO_FIRSTCODEUNIT:
+ *((uint32_t *)where) = ((re->flags & PCRE2_FIRSTSET) != 0)?
+ re->first_codeunit : 0;
+ break;
+
+ case PCRE2_INFO_FIRSTBITMAP:
+ *((const uint8_t **)where) = ((re->flags & PCRE2_FIRSTMAPSET) != 0)?
+ &(re->start_bitmap[0]) : NULL;
+ break;
+
+ case PCRE2_INFO_FRAMESIZE:
+ *((size_t *)where) = offsetof(heapframe, ovector) +
+ re->top_bracket * 2 * sizeof(PCRE2_SIZE);
+ break;
+
+ case PCRE2_INFO_HASBACKSLASHC:
+ *((uint32_t *)where) = (re->flags & PCRE2_HASBKC) != 0;
+ break;
+
+ case PCRE2_INFO_HASCRORLF:
+ *((uint32_t *)where) = (re->flags & PCRE2_HASCRORLF) != 0;
+ break;
+
+ case PCRE2_INFO_HEAPLIMIT:
+ *((uint32_t *)where) = re->limit_heap;
+ if (re->limit_heap == UINT32_MAX) return PCRE2_ERROR_UNSET;
+ break;
+
+ case PCRE2_INFO_JCHANGED:
+ *((uint32_t *)where) = (re->flags & PCRE2_JCHANGED) != 0;
+ break;
+
+ case PCRE2_INFO_JITSIZE:
+#ifdef SUPPORT_JIT
+ *((size_t *)where) = (re->executable_jit != NULL)?
+ PRIV(jit_get_size)(re->executable_jit) : 0;
+#else
+ *((size_t *)where) = 0;
+#endif
+ break;
+
+ case PCRE2_INFO_LASTCODETYPE:
+ *((uint32_t *)where) = ((re->flags & PCRE2_LASTSET) != 0)? 1 : 0;
+ break;
+
+ case PCRE2_INFO_LASTCODEUNIT:
+ *((uint32_t *)where) = ((re->flags & PCRE2_LASTSET) != 0)?
+ re->last_codeunit : 0;
+ break;
+
+ case PCRE2_INFO_MATCHEMPTY:
+ *((uint32_t *)where) = (re->flags & PCRE2_MATCH_EMPTY) != 0;
+ break;
+
+ case PCRE2_INFO_MATCHLIMIT:
+ *((uint32_t *)where) = re->limit_match;
+ if (re->limit_match == UINT32_MAX) return PCRE2_ERROR_UNSET;
+ break;
+
+ case PCRE2_INFO_MAXLOOKBEHIND:
+ *((uint32_t *)where) = re->max_lookbehind;
+ break;
+
+ case PCRE2_INFO_MINLENGTH:
+ *((uint32_t *)where) = re->minlength;
+ break;
+
+ case PCRE2_INFO_NAMEENTRYSIZE:
+ *((uint32_t *)where) = re->name_entry_size;
+ break;
+
+ case PCRE2_INFO_NAMECOUNT:
+ *((uint32_t *)where) = re->name_count;
+ break;
+
+ case PCRE2_INFO_NAMETABLE:
+ *((PCRE2_SPTR *)where) = (PCRE2_SPTR)((char *)re + sizeof(pcre2_real_code));
+ break;
+
+ case PCRE2_INFO_NEWLINE:
+ *((uint32_t *)where) = re->newline_convention;
+ break;
+
+ case PCRE2_INFO_SIZE:
+ *((size_t *)where) = re->blocksize;
+ break;
+
+ default: return PCRE2_ERROR_BADOPTION;
+ }
+
+return 0;
+}
+
+
+
+/*************************************************
+* Callout enumerator *
+*************************************************/
+
+/*
+Arguments:
+ code points to compiled code
+ callback function called for each callout block
+ callout_data user data passed to the callback
+
+Returns: 0 when successfully completed
+ < 0 on local error
+ != 0 for callback error
+*/
+
+PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION
+pcre2_callout_enumerate(const pcre2_code *code,
+ int (*callback)(pcre2_callout_enumerate_block *, void *), void *callout_data)
+{
+pcre2_real_code *re = (pcre2_real_code *)code;
+pcre2_callout_enumerate_block cb;
+PCRE2_SPTR cc;
+#ifdef SUPPORT_UNICODE
+BOOL utf;
+#endif
+
+if (re == NULL) return PCRE2_ERROR_NULL;
+
+#ifdef SUPPORT_UNICODE
+utf = (re->overall_options & PCRE2_UTF) != 0;
+#endif
+
+/* Check that the first field in the block is the magic number. If it is not,
+return with PCRE2_ERROR_BADMAGIC. */
+
+if (re->magic_number != MAGIC_NUMBER) return PCRE2_ERROR_BADMAGIC;
+
+/* Check that this pattern was compiled in the correct bit mode */
+
+if ((re->flags & (PCRE2_CODE_UNIT_WIDTH/8)) == 0) return PCRE2_ERROR_BADMODE;
+
+cb.version = 0;
+cc = (PCRE2_SPTR)((uint8_t *)re + sizeof(pcre2_real_code))
+ + re->name_count * re->name_entry_size;
+
+while (TRUE)
+ {
+ int rc;
+ switch (*cc)
+ {
+ case OP_END:
+ return 0;
+
+ case OP_CHAR:
+ case OP_CHARI:
+ case OP_NOT:
+ case OP_NOTI:
+ case OP_STAR:
+ case OP_MINSTAR:
+ case OP_PLUS:
+ case OP_MINPLUS:
+ case OP_QUERY:
+ case OP_MINQUERY:
+ case OP_UPTO:
+ case OP_MINUPTO:
+ case OP_EXACT:
+ case OP_POSSTAR:
+ case OP_POSPLUS:
+ case OP_POSQUERY:
+ case OP_POSUPTO:
+ case OP_STARI:
+ case OP_MINSTARI:
+ case OP_PLUSI:
+ case OP_MINPLUSI:
+ case OP_QUERYI:
+ case OP_MINQUERYI:
+ case OP_UPTOI:
+ case OP_MINUPTOI:
+ case OP_EXACTI:
+ case OP_POSSTARI:
+ case OP_POSPLUSI:
+ case OP_POSQUERYI:
+ case OP_POSUPTOI:
+ case OP_NOTSTAR:
+ case OP_NOTMINSTAR:
+ case OP_NOTPLUS:
+ case OP_NOTMINPLUS:
+ case OP_NOTQUERY:
+ case OP_NOTMINQUERY:
+ case OP_NOTUPTO:
+ case OP_NOTMINUPTO:
+ case OP_NOTEXACT:
+ case OP_NOTPOSSTAR:
+ case OP_NOTPOSPLUS:
+ case OP_NOTPOSQUERY:
+ case OP_NOTPOSUPTO:
+ case OP_NOTSTARI:
+ case OP_NOTMINSTARI:
+ case OP_NOTPLUSI:
+ case OP_NOTMINPLUSI:
+ case OP_NOTQUERYI:
+ case OP_NOTMINQUERYI:
+ case OP_NOTUPTOI:
+ case OP_NOTMINUPTOI:
+ case OP_NOTEXACTI:
+ case OP_NOTPOSSTARI:
+ case OP_NOTPOSPLUSI:
+ case OP_NOTPOSQUERYI:
+ case OP_NOTPOSUPTOI:
+ cc += PRIV(OP_lengths)[*cc];
+#ifdef SUPPORT_UNICODE
+ if (utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
+#endif
+ break;
+
+ case OP_TYPESTAR:
+ case OP_TYPEMINSTAR:
+ case OP_TYPEPLUS:
+ case OP_TYPEMINPLUS:
+ case OP_TYPEQUERY:
+ case OP_TYPEMINQUERY:
+ case OP_TYPEUPTO:
+ case OP_TYPEMINUPTO:
+ case OP_TYPEEXACT:
+ case OP_TYPEPOSSTAR:
+ case OP_TYPEPOSPLUS:
+ case OP_TYPEPOSQUERY:
+ case OP_TYPEPOSUPTO:
+ cc += PRIV(OP_lengths)[*cc];
+#ifdef SUPPORT_UNICODE
+ if (cc[-1] == OP_PROP || cc[-1] == OP_NOTPROP) cc += 2;
+#endif
+ break;
+
+#if defined SUPPORT_UNICODE || PCRE2_CODE_UNIT_WIDTH != 8
+ case OP_XCLASS:
+ cc += GET(cc, 1);
+ break;
+#endif
+
+ case OP_MARK:
+ case OP_COMMIT_ARG:
+ case OP_PRUNE_ARG:
+ case OP_SKIP_ARG:
+ case OP_THEN_ARG:
+ cc += PRIV(OP_lengths)[*cc] + cc[1];
+ break;
+
+ case OP_CALLOUT:
+ cb.pattern_position = GET(cc, 1);
+ cb.next_item_length = GET(cc, 1 + LINK_SIZE);
+ cb.callout_number = cc[1 + 2*LINK_SIZE];
+ cb.callout_string_offset = 0;
+ cb.callout_string_length = 0;
+ cb.callout_string = NULL;
+ rc = callback(&cb, callout_data);
+ if (rc != 0) return rc;
+ cc += PRIV(OP_lengths)[*cc];
+ break;
+
+ case OP_CALLOUT_STR:
+ cb.pattern_position = GET(cc, 1);
+ cb.next_item_length = GET(cc, 1 + LINK_SIZE);
+ cb.callout_number = 0;
+ cb.callout_string_offset = GET(cc, 1 + 3*LINK_SIZE);
+ cb.callout_string_length =
+ GET(cc, 1 + 2*LINK_SIZE) - (1 + 4*LINK_SIZE) - 2;
+ cb.callout_string = cc + (1 + 4*LINK_SIZE) + 1;
+ rc = callback(&cb, callout_data);
+ if (rc != 0) return rc;
+ cc += GET(cc, 1 + 2*LINK_SIZE);
+ break;
+
+ default:
+ cc += PRIV(OP_lengths)[*cc];
+ break;
+ }
+ }
+}
+
+/* End of pcre2_pattern_info.c */
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