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/*************************************************
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* Perl-Compatible Regular Expressions *
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*************************************************/
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/* PCRE is a library of functions to support regular expressions whose syntax
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and semantics are as close as possible to those of the Perl 5 language.
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Written by Philip Hazel
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Copyright (c) 1997-2005 University of Cambridge
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-----------------------------------------------------------------------------
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the University of Cambridge nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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-----------------------------------------------------------------------------
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*/
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/* This module contains an PCRE private debugging function for printing out the
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internal form of a compiled regular expression, along with some supporting
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local functions. */
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#include "pcre_internal.h"
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static const char *OP_names[] = { OP_NAME_LIST };
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/*************************************************
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* Print single- or multi-byte character *
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*************************************************/
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static int
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print_char(FILE *f, uschar *ptr, BOOL utf8)
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{
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int c = *ptr;
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if (!utf8 || (c & 0xc0) != 0xc0)
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{
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if (isprint(c)) fprintf(f, "%c", c); else fprintf(f, "\\x%02x", c);
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return 0;
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}
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else
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{
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int i;
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int a = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */
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int s = 6*a;
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c = (c & _pcre_utf8_table3[a]) << s;
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for (i = 1; i <= a; i++)
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{
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/* This is a check for malformed UTF-8; it should only occur if the sanity
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check has been turned off. Rather than swallow random bytes, just stop if
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we hit a bad one. Print it with \X instead of \x as an indication. */
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if ((ptr[i] & 0xc0) != 0x80)
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{
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fprintf(f, "\\X{%x}", c);
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return i - 1;
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}
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/* The byte is OK */
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s -= 6;
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c |= (ptr[i] & 0x3f) << s;
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}
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if (c < 128) fprintf(f, "\\x%02x", c); else fprintf(f, "\\x{%x}", c);
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return a;
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}
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}
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/*************************************************
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* Find Unicode property name *
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*************************************************/
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static const char *
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get_ucpname(int property)
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{
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#ifdef SUPPORT_UCP
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int i;
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for (i = _pcre_utt_size; i >= 0; i--)
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{
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if (property == _pcre_utt[i].value) break;
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}
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return (i >= 0)? _pcre_utt[i].name : "??";
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#else
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return "??";
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#endif
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}
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/*************************************************
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* Print compiled regex *
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*************************************************/
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/* Make this function work for a regex with integers either byte order.
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However, we assume that what we are passed is a compiled regex. */
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EXPORT void
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_pcre_printint(pcre *external_re, FILE *f)
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{
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real_pcre *re = (real_pcre *)external_re;
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uschar *codestart, *code;
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BOOL utf8;
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unsigned int options = re->options;
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int offset = re->name_table_offset;
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int count = re->name_count;
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int size = re->name_entry_size;
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if (re->magic_number != MAGIC_NUMBER)
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{
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offset = ((offset << 8) & 0xff00) | ((offset >> 8) & 0xff);
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count = ((count << 8) & 0xff00) | ((count >> 8) & 0xff);
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size = ((size << 8) & 0xff00) | ((size >> 8) & 0xff);
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options = ((options << 24) & 0xff000000) |
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((options << 8) & 0x00ff0000) |
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((options >> 8) & 0x0000ff00) |
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((options >> 24) & 0x000000ff);
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}
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code = codestart = (uschar *)re + offset + count * size;
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utf8 = (options & PCRE_UTF8) != 0;
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for(;;)
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{
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uschar *ccode;
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int c;
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int extra = 0;
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fprintf(f, "%3d ", (int)(code - codestart));
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if (*code >= OP_BRA)
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{
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if (*code - OP_BRA > EXTRACT_BASIC_MAX)
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fprintf(f, "%3d Bra extra\n", GET(code, 1));
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else
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fprintf(f, "%3d Bra %d\n", GET(code, 1), *code - OP_BRA);
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code += _pcre_OP_lengths[OP_BRA];
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continue;
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}
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switch(*code)
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{
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case OP_END:
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fprintf(f, " %s\n", OP_names[*code]);
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fprintf(f, "------------------------------------------------------------------\n");
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return;
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case OP_OPT:
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fprintf(f, " %.2x %s", code[1], OP_names[*code]);
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break;
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case OP_CHAR:
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{
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fprintf(f, " ");
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do
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{
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code++;
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code += 1 + print_char(f, code, utf8);
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}
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while (*code == OP_CHAR);
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fprintf(f, "\n");
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continue;
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}
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break;
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case OP_CHARNC:
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{
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fprintf(f, " NC ");
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do
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{
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code++;
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code += 1 + print_char(f, code, utf8);
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}
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while (*code == OP_CHARNC);
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fprintf(f, "\n");
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continue;
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}
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break;
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case OP_KETRMAX:
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case OP_KETRMIN:
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case OP_ALT:
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case OP_KET:
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case OP_ASSERT:
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case OP_ASSERT_NOT:
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case OP_ASSERTBACK:
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case OP_ASSERTBACK_NOT:
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case OP_ONCE:
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case OP_COND:
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case OP_REVERSE:
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fprintf(f, "%3d %s", GET(code, 1), OP_names[*code]);
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break;
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case OP_BRANUMBER:
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printf("%3d %s", GET2(code, 1), OP_names[*code]);
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break;
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case OP_CREF:
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if (GET2(code, 1) == CREF_RECURSE)
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fprintf(f, " Cond recurse");
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else
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fprintf(f, "%3d %s", GET2(code,1), OP_names[*code]);
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break;
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case OP_STAR:
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case OP_MINSTAR:
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case OP_PLUS:
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case OP_MINPLUS:
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case OP_QUERY:
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case OP_MINQUERY:
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case OP_TYPESTAR:
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case OP_TYPEMINSTAR:
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case OP_TYPEPLUS:
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case OP_TYPEMINPLUS:
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case OP_TYPEQUERY:
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case OP_TYPEMINQUERY:
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fprintf(f, " ");
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if (*code >= OP_TYPESTAR)
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{
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fprintf(f, "%s", OP_names[code[1]]);
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if (code[1] == OP_PROP || code[1] == OP_NOTPROP)
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{
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fprintf(f, " %s ", get_ucpname(code[2]));
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extra = 1;
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}
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}
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else extra = print_char(f, code+1, utf8);
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fprintf(f, "%s", OP_names[*code]);
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break;
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case OP_EXACT:
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case OP_UPTO:
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case OP_MINUPTO:
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fprintf(f, " ");
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extra = print_char(f, code+3, utf8);
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fprintf(f, "{");
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if (*code != OP_EXACT) fprintf(f, ",");
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fprintf(f, "%d}", GET2(code,1));
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if (*code == OP_MINUPTO) fprintf(f, "?");
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break;
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case OP_TYPEEXACT:
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case OP_TYPEUPTO:
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case OP_TYPEMINUPTO:
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fprintf(f, " %s", OP_names[code[3]]);
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if (code[3] == OP_PROP || code[3] == OP_NOTPROP)
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{
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fprintf(f, " %s ", get_ucpname(code[4]));
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extra = 1;
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}
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fprintf(f, "{");
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if (*code != OP_TYPEEXACT) fprintf(f, "0,");
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fprintf(f, "%d}", GET2(code,1));
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if (*code == OP_TYPEMINUPTO) fprintf(f, "?");
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break;
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case OP_NOT:
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if (isprint(c = code[1])) fprintf(f, " [^%c]", c);
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else fprintf(f, " [^\\x%02x]", c);
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break;
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| 288 |
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case OP_NOTSTAR:
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case OP_NOTMINSTAR:
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case OP_NOTPLUS:
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case OP_NOTMINPLUS:
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case OP_NOTQUERY:
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case OP_NOTMINQUERY:
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if (isprint(c = code[1])) fprintf(f, " [^%c]", c);
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else fprintf(f, " [^\\x%02x]", c);
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fprintf(f, "%s", OP_names[*code]);
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break;
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| 299 |
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case OP_NOTEXACT:
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case OP_NOTUPTO:
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case OP_NOTMINUPTO:
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if (isprint(c = code[3])) fprintf(f, " [^%c]{", c);
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else fprintf(f, " [^\\x%02x]{", c);
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if (*code != OP_NOTEXACT) fprintf(f, "0,");
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fprintf(f, "%d}", GET2(code,1));
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if (*code == OP_NOTMINUPTO) fprintf(f, "?");
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break;
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case OP_RECURSE:
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fprintf(f, "%3d %s", GET(code, 1), OP_names[*code]);
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break;
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| 313 |
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case OP_REF:
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fprintf(f, " \\%d", GET2(code,1));
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ccode = code + _pcre_OP_lengths[*code];
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goto CLASS_REF_REPEAT;
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| 318 |
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case OP_CALLOUT:
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fprintf(f, " %s %d %d %d", OP_names[*code], code[1], GET(code,2),
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GET(code, 2 + LINK_SIZE));
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break;
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| 323 |
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| 324 |
case OP_PROP:
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case OP_NOTPROP:
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| 326 |
fprintf(f, " %s %s", OP_names[*code], get_ucpname(code[1]));
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break;
|
| 328 |
|
| 329 |
/* OP_XCLASS can only occur in UTF-8 mode. However, there's no harm in
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| 330 |
having this code always here, and it makes it less messy without all those
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| 331 |
#ifdefs. */
|
| 332 |
|
| 333 |
case OP_CLASS:
|
| 334 |
case OP_NCLASS:
|
| 335 |
case OP_XCLASS:
|
| 336 |
{
|
| 337 |
int i, min, max;
|
| 338 |
BOOL printmap;
|
| 339 |
|
| 340 |
fprintf(f, " [");
|
| 341 |
|
| 342 |
if (*code == OP_XCLASS)
|
| 343 |
{
|
| 344 |
extra = GET(code, 1);
|
| 345 |
ccode = code + LINK_SIZE + 1;
|
| 346 |
printmap = (*ccode & XCL_MAP) != 0;
|
| 347 |
if ((*ccode++ & XCL_NOT) != 0) fprintf(f, "^");
|
| 348 |
}
|
| 349 |
else
|
| 350 |
{
|
| 351 |
printmap = TRUE;
|
| 352 |
ccode = code + 1;
|
| 353 |
}
|
| 354 |
|
| 355 |
/* Print a bit map */
|
| 356 |
|
| 357 |
if (printmap)
|
| 358 |
{
|
| 359 |
for (i = 0; i < 256; i++)
|
| 360 |
{
|
| 361 |
if ((ccode[i/8] & (1 << (i&7))) != 0)
|
| 362 |
{
|
| 363 |
int j;
|
| 364 |
for (j = i+1; j < 256; j++)
|
| 365 |
if ((ccode[j/8] & (1 << (j&7))) == 0) break;
|
| 366 |
if (i == '-' || i == ']') fprintf(f, "\\");
|
| 367 |
if (isprint(i)) fprintf(f, "%c", i); else fprintf(f, "\\x%02x", i);
|
| 368 |
if (--j > i)
|
| 369 |
{
|
| 370 |
if (j != i + 1) fprintf(f, "-");
|
| 371 |
if (j == '-' || j == ']') fprintf(f, "\\");
|
| 372 |
if (isprint(j)) fprintf(f, "%c", j); else fprintf(f, "\\x%02x", j);
|
| 373 |
}
|
| 374 |
i = j;
|
| 375 |
}
|
| 376 |
}
|
| 377 |
ccode += 32;
|
| 378 |
}
|
| 379 |
|
| 380 |
/* For an XCLASS there is always some additional data */
|
| 381 |
|
| 382 |
if (*code == OP_XCLASS)
|
| 383 |
{
|
| 384 |
int ch;
|
| 385 |
while ((ch = *ccode++) != XCL_END)
|
| 386 |
{
|
| 387 |
if (ch == XCL_PROP)
|
| 388 |
{
|
| 389 |
fprintf(f, "\\p{%s}", get_ucpname(*ccode++));
|
| 390 |
}
|
| 391 |
else if (ch == XCL_NOTPROP)
|
| 392 |
{
|
| 393 |
fprintf(f, "\\P{%s}", get_ucpname(*ccode++));
|
| 394 |
}
|
| 395 |
else
|
| 396 |
{
|
| 397 |
ccode += 1 + print_char(f, ccode, TRUE);
|
| 398 |
if (ch == XCL_RANGE)
|
| 399 |
{
|
| 400 |
fprintf(f, "-");
|
| 401 |
ccode += 1 + print_char(f, ccode, TRUE);
|
| 402 |
}
|
| 403 |
}
|
| 404 |
}
|
| 405 |
}
|
| 406 |
|
| 407 |
/* Indicate a non-UTF8 class which was created by negation */
|
| 408 |
|
| 409 |
fprintf(f, "]%s", (*code == OP_NCLASS)? " (neg)" : "");
|
| 410 |
|
| 411 |
/* Handle repeats after a class or a back reference */
|
| 412 |
|
| 413 |
CLASS_REF_REPEAT:
|
| 414 |
switch(*ccode)
|
| 415 |
{
|
| 416 |
case OP_CRSTAR:
|
| 417 |
case OP_CRMINSTAR:
|
| 418 |
case OP_CRPLUS:
|
| 419 |
case OP_CRMINPLUS:
|
| 420 |
case OP_CRQUERY:
|
| 421 |
case OP_CRMINQUERY:
|
| 422 |
fprintf(f, "%s", OP_names[*ccode]);
|
| 423 |
extra += _pcre_OP_lengths[*ccode];
|
| 424 |
break;
|
| 425 |
|
| 426 |
case OP_CRRANGE:
|
| 427 |
case OP_CRMINRANGE:
|
| 428 |
min = GET2(ccode,1);
|
| 429 |
max = GET2(ccode,3);
|
| 430 |
if (max == 0) fprintf(f, "{%d,}", min);
|
| 431 |
else fprintf(f, "{%d,%d}", min, max);
|
| 432 |
if (*ccode == OP_CRMINRANGE) fprintf(f, "?");
|
| 433 |
extra += _pcre_OP_lengths[*ccode];
|
| 434 |
break;
|
| 435 |
}
|
| 436 |
}
|
| 437 |
break;
|
| 438 |
|
| 439 |
/* Anything else is just an item with no data*/
|
| 440 |
|
| 441 |
default:
|
| 442 |
fprintf(f, " %s", OP_names[*code]);
|
| 443 |
break;
|
| 444 |
}
|
| 445 |
|
| 446 |
code += _pcre_OP_lengths[*code] + extra;
|
| 447 |
fprintf(f, "\n");
|
| 448 |
}
|
| 449 |
}
|
| 450 |
|
| 451 |
/* End of pcre_printint.c */
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