--- /dev/null
+/* $Cambridge: exim/src/src/pcre/pcre_printint.src,v 1.1 2006/11/07 16:50:36 ph10 Exp $ */
+
+/*************************************************
+* 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) 1997-2005 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 PCRE private debugging function for printing out the
+internal form of a compiled regular expression, along with some supporting
+local functions. This source file is used in two places:
+
+(1) It is #included by pcre_compile.c when it is compiled in debugging mode
+(DEBUG defined in pcre_internal.h). It is not included in production compiles.
+
+(2) It is always #included by pcretest.c, which can be asked to print out a
+compiled regex for debugging purposes. */
+
+
+static const char *OP_names[] = { OP_NAME_LIST };
+
+
+/*************************************************
+* Print single- or multi-byte character *
+*************************************************/
+
+static int
+print_char(FILE *f, uschar *ptr, BOOL utf8)
+{
+int c = *ptr;
+
+if (!utf8 || (c & 0xc0) != 0xc0)
+ {
+ if (isprint(c)) fprintf(f, "%c", c); else fprintf(f, "\\x%02x", c);
+ return 0;
+ }
+else
+ {
+ int i;
+ int a = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */
+ int s = 6*a;
+ c = (c & _pcre_utf8_table3[a]) << s;
+ for (i = 1; i <= a; i++)
+ {
+ /* This is a check for malformed UTF-8; it should only occur if the sanity
+ check has been turned off. Rather than swallow random bytes, just stop if
+ we hit a bad one. Print it with \X instead of \x as an indication. */
+
+ if ((ptr[i] & 0xc0) != 0x80)
+ {
+ fprintf(f, "\\X{%x}", c);
+ return i - 1;
+ }
+
+ /* The byte is OK */
+
+ s -= 6;
+ c |= (ptr[i] & 0x3f) << s;
+ }
+ if (c < 128) fprintf(f, "\\x%02x", c); else fprintf(f, "\\x{%x}", c);
+ return a;
+ }
+}
+
+
+
+/*************************************************
+* Find Unicode property name *
+*************************************************/
+
+static const char *
+get_ucpname(int ptype, int pvalue)
+{
+#ifdef SUPPORT_UCP
+int i;
+for (i = _pcre_utt_size; i >= 0; i--)
+ {
+ if (ptype == _pcre_utt[i].type && pvalue == _pcre_utt[i].value) break;
+ }
+return (i >= 0)? _pcre_utt[i].name : "??";
+#else
+/* It gets harder and harder to shut off unwanted compiler warnings. */
+ptype = ptype * pvalue;
+return (ptype == pvalue)? "??" : "??";
+#endif
+}
+
+
+
+/*************************************************
+* Print compiled regex *
+*************************************************/
+
+/* Make this function work for a regex with integers either byte order.
+However, we assume that what we are passed is a compiled regex. */
+
+static void
+pcre_printint(pcre *external_re, FILE *f)
+{
+real_pcre *re = (real_pcre *)external_re;
+uschar *codestart, *code;
+BOOL utf8;
+
+unsigned int options = re->options;
+int offset = re->name_table_offset;
+int count = re->name_count;
+int size = re->name_entry_size;
+
+if (re->magic_number != MAGIC_NUMBER)
+ {
+ offset = ((offset << 8) & 0xff00) | ((offset >> 8) & 0xff);
+ count = ((count << 8) & 0xff00) | ((count >> 8) & 0xff);
+ size = ((size << 8) & 0xff00) | ((size >> 8) & 0xff);
+ options = ((options << 24) & 0xff000000) |
+ ((options << 8) & 0x00ff0000) |
+ ((options >> 8) & 0x0000ff00) |
+ ((options >> 24) & 0x000000ff);
+ }
+
+code = codestart = (uschar *)re + offset + count * size;
+utf8 = (options & PCRE_UTF8) != 0;
+
+for(;;)
+ {
+ uschar *ccode;
+ int c;
+ int extra = 0;
+
+ fprintf(f, "%3d ", (int)(code - codestart));
+
+ if (*code >= OP_BRA)
+ {
+ if (*code - OP_BRA > EXTRACT_BASIC_MAX)
+ fprintf(f, "%3d Bra extra\n", GET(code, 1));
+ else
+ fprintf(f, "%3d Bra %d\n", GET(code, 1), *code - OP_BRA);
+ code += _pcre_OP_lengths[OP_BRA];
+ continue;
+ }
+
+ switch(*code)
+ {
+ case OP_END:
+ fprintf(f, " %s\n", OP_names[*code]);
+ fprintf(f, "------------------------------------------------------------------\n");
+ return;
+
+ case OP_OPT:
+ fprintf(f, " %.2x %s", code[1], OP_names[*code]);
+ break;
+
+ case OP_CHAR:
+ fprintf(f, " ");
+ do
+ {
+ code++;
+ code += 1 + print_char(f, code, utf8);
+ }
+ while (*code == OP_CHAR);
+ fprintf(f, "\n");
+ continue;
+
+ case OP_CHARNC:
+ fprintf(f, " NC ");
+ do
+ {
+ code++;
+ code += 1 + print_char(f, code, utf8);
+ }
+ while (*code == OP_CHARNC);
+ fprintf(f, "\n");
+ continue;
+
+ case OP_KETRMAX:
+ case OP_KETRMIN:
+ case OP_ALT:
+ case OP_KET:
+ case OP_ASSERT:
+ case OP_ASSERT_NOT:
+ case OP_ASSERTBACK:
+ case OP_ASSERTBACK_NOT:
+ case OP_ONCE:
+ case OP_COND:
+ case OP_REVERSE:
+ fprintf(f, "%3d %s", GET(code, 1), OP_names[*code]);
+ break;
+
+ case OP_BRANUMBER:
+ printf("%3d %s", GET2(code, 1), OP_names[*code]);
+ break;
+
+ case OP_CREF:
+ if (GET2(code, 1) == CREF_RECURSE)
+ fprintf(f, " Cond recurse");
+ else
+ fprintf(f, "%3d %s", GET2(code,1), OP_names[*code]);
+ break;
+
+ case OP_STAR:
+ case OP_MINSTAR:
+ case OP_PLUS:
+ case OP_MINPLUS:
+ case OP_QUERY:
+ case OP_MINQUERY:
+ case OP_TYPESTAR:
+ case OP_TYPEMINSTAR:
+ case OP_TYPEPLUS:
+ case OP_TYPEMINPLUS:
+ case OP_TYPEQUERY:
+ case OP_TYPEMINQUERY:
+ fprintf(f, " ");
+ if (*code >= OP_TYPESTAR)
+ {
+ fprintf(f, "%s", OP_names[code[1]]);
+ if (code[1] == OP_PROP || code[1] == OP_NOTPROP)
+ {
+ fprintf(f, " %s ", get_ucpname(code[2], code[3]));
+ extra = 2;
+ }
+ }
+ else extra = print_char(f, code+1, utf8);
+ fprintf(f, "%s", OP_names[*code]);
+ break;
+
+ case OP_EXACT:
+ case OP_UPTO:
+ case OP_MINUPTO:
+ fprintf(f, " ");
+ extra = print_char(f, code+3, utf8);
+ fprintf(f, "{");
+ if (*code != OP_EXACT) fprintf(f, ",");
+ fprintf(f, "%d}", GET2(code,1));
+ if (*code == OP_MINUPTO) fprintf(f, "?");
+ break;
+
+ case OP_TYPEEXACT:
+ case OP_TYPEUPTO:
+ case OP_TYPEMINUPTO:
+ fprintf(f, " %s", OP_names[code[3]]);
+ if (code[3] == OP_PROP || code[3] == OP_NOTPROP)
+ {
+ fprintf(f, " %s ", get_ucpname(code[4], code[5]));
+ extra = 2;
+ }
+ fprintf(f, "{");
+ if (*code != OP_TYPEEXACT) fprintf(f, "0,");
+ fprintf(f, "%d}", GET2(code,1));
+ if (*code == OP_TYPEMINUPTO) fprintf(f, "?");
+ break;
+
+ case OP_NOT:
+ if (isprint(c = code[1])) fprintf(f, " [^%c]", c);
+ else fprintf(f, " [^\\x%02x]", c);
+ break;
+
+ case OP_NOTSTAR:
+ case OP_NOTMINSTAR:
+ case OP_NOTPLUS:
+ case OP_NOTMINPLUS:
+ case OP_NOTQUERY:
+ case OP_NOTMINQUERY:
+ if (isprint(c = code[1])) fprintf(f, " [^%c]", c);
+ else fprintf(f, " [^\\x%02x]", c);
+ fprintf(f, "%s", OP_names[*code]);
+ break;
+
+ case OP_NOTEXACT:
+ case OP_NOTUPTO:
+ case OP_NOTMINUPTO:
+ if (isprint(c = code[3])) fprintf(f, " [^%c]{", c);
+ else fprintf(f, " [^\\x%02x]{", c);
+ if (*code != OP_NOTEXACT) fprintf(f, "0,");
+ fprintf(f, "%d}", GET2(code,1));
+ if (*code == OP_NOTMINUPTO) fprintf(f, "?");
+ break;
+
+ case OP_RECURSE:
+ fprintf(f, "%3d %s", GET(code, 1), OP_names[*code]);
+ break;
+
+ case OP_REF:
+ fprintf(f, " \\%d", GET2(code,1));
+ ccode = code + _pcre_OP_lengths[*code];
+ goto CLASS_REF_REPEAT;
+
+ case OP_CALLOUT:
+ fprintf(f, " %s %d %d %d", OP_names[*code], code[1], GET(code,2),
+ GET(code, 2 + LINK_SIZE));
+ break;
+
+ case OP_PROP:
+ case OP_NOTPROP:
+ fprintf(f, " %s %s", OP_names[*code], get_ucpname(code[1], code[2]));
+ break;
+
+ /* OP_XCLASS can only occur in UTF-8 mode. However, there's no harm in
+ having this code always here, and it makes it less messy without all those
+ #ifdefs. */
+
+ case OP_CLASS:
+ case OP_NCLASS:
+ case OP_XCLASS:
+ {
+ int i, min, max;
+ BOOL printmap;
+
+ fprintf(f, " [");
+
+ if (*code == OP_XCLASS)
+ {
+ extra = GET(code, 1);
+ ccode = code + LINK_SIZE + 1;
+ printmap = (*ccode & XCL_MAP) != 0;
+ if ((*ccode++ & XCL_NOT) != 0) fprintf(f, "^");
+ }
+ else
+ {
+ printmap = TRUE;
+ ccode = code + 1;
+ }
+
+ /* Print a bit map */
+
+ if (printmap)
+ {
+ for (i = 0; i < 256; i++)
+ {
+ if ((ccode[i/8] & (1 << (i&7))) != 0)
+ {
+ int j;
+ for (j = i+1; j < 256; j++)
+ if ((ccode[j/8] & (1 << (j&7))) == 0) break;
+ if (i == '-' || i == ']') fprintf(f, "\\");
+ if (isprint(i)) fprintf(f, "%c", i); else fprintf(f, "\\x%02x", i);
+ if (--j > i)
+ {
+ if (j != i + 1) fprintf(f, "-");
+ if (j == '-' || j == ']') fprintf(f, "\\");
+ if (isprint(j)) fprintf(f, "%c", j); else fprintf(f, "\\x%02x", j);
+ }
+ i = j;
+ }
+ }
+ ccode += 32;
+ }
+
+ /* For an XCLASS there is always some additional data */
+
+ if (*code == OP_XCLASS)
+ {
+ int ch;
+ while ((ch = *ccode++) != XCL_END)
+ {
+ if (ch == XCL_PROP)
+ {
+ int ptype = *ccode++;
+ int pvalue = *ccode++;
+ fprintf(f, "\\p{%s}", get_ucpname(ptype, pvalue));
+ }
+ else if (ch == XCL_NOTPROP)
+ {
+ int ptype = *ccode++;
+ int pvalue = *ccode++;
+ fprintf(f, "\\P{%s}", get_ucpname(ptype, pvalue));
+ }
+ else
+ {
+ ccode += 1 + print_char(f, ccode, TRUE);
+ if (ch == XCL_RANGE)
+ {
+ fprintf(f, "-");
+ ccode += 1 + print_char(f, ccode, TRUE);
+ }
+ }
+ }
+ }
+
+ /* Indicate a non-UTF8 class which was created by negation */
+
+ fprintf(f, "]%s", (*code == OP_NCLASS)? " (neg)" : "");
+
+ /* Handle repeats after a class or a back reference */
+
+ CLASS_REF_REPEAT:
+ switch(*ccode)
+ {
+ case OP_CRSTAR:
+ case OP_CRMINSTAR:
+ case OP_CRPLUS:
+ case OP_CRMINPLUS:
+ case OP_CRQUERY:
+ case OP_CRMINQUERY:
+ fprintf(f, "%s", OP_names[*ccode]);
+ extra += _pcre_OP_lengths[*ccode];
+ break;
+
+ case OP_CRRANGE:
+ case OP_CRMINRANGE:
+ min = GET2(ccode,1);
+ max = GET2(ccode,3);
+ if (max == 0) fprintf(f, "{%d,}", min);
+ else fprintf(f, "{%d,%d}", min, max);
+ if (*ccode == OP_CRMINRANGE) fprintf(f, "?");
+ extra += _pcre_OP_lengths[*ccode];
+ break;
+
+ /* Do nothing if it's not a repeat; this code stops picky compilers
+ warning about the lack of a default code path. */
+
+ default:
+ break;
+ }
+ }
+ break;
+
+ /* Anything else is just an item with no data*/
+
+ default:
+ fprintf(f, " %s", OP_names[*code]);
+ break;
+ }
+
+ code += _pcre_OP_lengths[*code] + extra;
+ fprintf(f, "\n");
+ }
+}
+
+/* End of pcre_printint.src */
projects / exim.git / blobdiff