/[pcre]/code/trunk/printint.c
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revision 74 by nigel, Sat Feb 24 21:40:30 2007 UTC revision 75 by nigel, Sat Feb 24 21:40:37 2007 UTC
# Line 9  the file Tech.Notes for some information Line 9  the file Tech.Notes for some information
9    
10  Written by: Philip Hazel <ph10@cam.ac.uk>  Written by: Philip Hazel <ph10@cam.ac.uk>
11    
12             Copyright (c) 1997-2003 University of Cambridge             Copyright (c) 1997-2004 University of Cambridge
13    
14  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
15  Permission is granted to anyone to use this software for any purpose on any  Redistribution and use in source and binary forms, with or without
16  computer system, and to redistribute it freely, subject to the following  modification, are permitted provided that the following conditions are met:
17  restrictions:  
18        * Redistributions of source code must retain the above copyright notice,
19  1. This software is distributed in the hope that it will be useful,        this list of conditions and the following disclaimer.
20     but WITHOUT ANY WARRANTY; without even the implied warranty of  
21     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.      * Redistributions in binary form must reproduce the above copyright
22          notice, this list of conditions and the following disclaimer in the
23  2. The origin of this software must not be misrepresented, either by        documentation and/or other materials provided with the distribution.
24     explicit claim or by omission.  
25        * Neither the name of the University of Cambridge nor the names of its
26  3. Altered versions must be plainly marked as such, and must not be        contributors may be used to endorse or promote products derived from
27     misrepresented as being the original software.        this software without specific prior written permission.
28    
29  4. If PCRE is embedded in any software that is released under the GNU  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
30     General Purpose Licence (GPL), then the terms of that licence shall  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31     supersede any condition above with which it is incompatible.  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
33    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39    POSSIBILITY OF SUCH DAMAGE.
40  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
41  */  */
42    
# Line 76  else Line 84  else
84    c = (c & utf8_t3[a]) << s;    c = (c & utf8_t3[a]) << s;
85    for (i = 1; i <= a; i++)    for (i = 1; i <= a; i++)
86      {      {
87        /* This is a check for malformed UTF-8; it should only occur if the sanity
88        check has been turned off. Rather than swallow random bytes, just stop if
89        we hit a bad one. Print it with \X instead of \x as an indication. */
90    
91        if ((ptr[i] & 0xc0) != 0x80)
92          {
93          fprintf(f, "\\X{%x}", c);
94          return i - 1;
95          }
96    
97        /* The byte is OK */
98    
99      s -= 6;      s -= 6;
100      c |= (ptr[i] & 0x3f) << s;      c |= (ptr[i] & 0x3f) << s;
101      }      }
# Line 88  else Line 108  else
108    
109    
110  /*************************************************  /*************************************************
111    *          Find Unicode property name            *
112    *************************************************/
113    
114    static const char *
115    get_ucpname(int property)
116    {
117    int i;
118    for (i = sizeof(utt)/sizeof(ucp_type_table); i >= 0; i--)
119      {
120      if (property == utt[i].value) break;
121      }
122    return (i >= 0)? utt[i].name : "??";
123    }
124    
125    
126    
127    /*************************************************
128  *         Print compiled regex                   *  *         Print compiled regex                   *
129  *************************************************/  *************************************************/
130    
131    /* Make this function work for a regex with integers either byte order.
132    However, we assume that what we are passed is a compiled regex. */
133    
134  static void  static void
135  print_internals(pcre *external_re, FILE *f)  print_internals(pcre *external_re, FILE *f)
136  {  {
137  real_pcre *re = (real_pcre *)external_re;  real_pcre *re = (real_pcre *)external_re;
138  uschar *codestart =  uschar *codestart, *code;
139    (uschar *)re + sizeof(real_pcre) + re->name_count * re->name_entry_size;  BOOL utf8;
140  uschar *code = codestart;  
141  BOOL utf8 = (re->options & PCRE_UTF8) != 0;  unsigned int options = re->options;
142    int offset = re->name_table_offset;
143    int count = re->name_count;
144    int size = re->name_entry_size;
145    
146    if (re->magic_number != MAGIC_NUMBER)
147      {
148      offset = ((offset << 8) & 0xff00) | ((offset >> 8) & 0xff);
149      count = ((count << 8) & 0xff00) | ((count >> 8) & 0xff);
150      size = ((size << 8) & 0xff00) | ((size >> 8) & 0xff);
151      options = ((options << 24) & 0xff000000) |
152                ((options <<  8) & 0x00ff0000) |
153                ((options >>  8) & 0x0000ff00) |
154                ((options >> 24) & 0x000000ff);
155      }
156    
157    code = codestart = (uschar *)re + offset + count * size;
158    utf8 = (options & PCRE_UTF8) != 0;
159    
160  for(;;)  for(;;)
161    {    {
# Line 129  for(;;) Line 186  for(;;)
186      fprintf(f, " %.2x %s", code[1], OP_names[*code]);      fprintf(f, " %.2x %s", code[1], OP_names[*code]);
187      break;      break;
188    
189      case OP_CHARS:      case OP_CHAR:
190        {        {
191        int charlength = code[1];        fprintf(f, "    ");
192        ccode = code + 2;        do
       extra = charlength;  
       fprintf(f, "%3d ", charlength);  
       while (charlength > 0)  
193          {          {
194          int extrabytes = print_char(f, ccode, utf8);          code++;
195          ccode += 1 + extrabytes;          code += 1 + print_char(f, code, utf8);
         charlength -= 1 + extrabytes;  
196          }          }
197          while (*code == OP_CHAR);
198          fprintf(f, "\n");
199          continue;
200          }
201        break;
202    
203        case OP_CHARNC:
204          {
205          fprintf(f, " NC ");
206          do
207            {
208            code++;
209            code += 1 + print_char(f, code, utf8);
210            }
211          while (*code == OP_CHARNC);
212          fprintf(f, "\n");
213          continue;
214        }        }
215      break;      break;
216    
# Line 182  for(;;) Line 252  for(;;)
252      case OP_TYPEQUERY:      case OP_TYPEQUERY:
253      case OP_TYPEMINQUERY:      case OP_TYPEMINQUERY:
254      fprintf(f, "    ");      fprintf(f, "    ");
255      if (*code >= OP_TYPESTAR) fprintf(f, "%s", OP_names[code[1]]);      if (*code >= OP_TYPESTAR)
256        else extra = print_char(f, code+1, utf8);        {
257          fprintf(f, "%s", OP_names[code[1]]);
258          if (code[1] == OP_PROP || code[1] == OP_NOTPROP)
259            {
260            fprintf(f, " %s ", get_ucpname(code[2]));
261            extra = 1;
262            }
263          }
264        else extra = print_char(f, code+1, utf8);
265      fprintf(f, "%s", OP_names[*code]);      fprintf(f, "%s", OP_names[*code]);
266      break;      break;
267    
# Line 201  for(;;) Line 279  for(;;)
279      case OP_TYPEEXACT:      case OP_TYPEEXACT:
280      case OP_TYPEUPTO:      case OP_TYPEUPTO:
281      case OP_TYPEMINUPTO:      case OP_TYPEMINUPTO:
282      fprintf(f, "    %s{", OP_names[code[3]]);      fprintf(f, "    %s", OP_names[code[3]]);
283        if (code[3] == OP_PROP || code[3] == OP_NOTPROP)
284          {
285          fprintf(f, " %s ", get_ucpname(code[4]));
286          extra = 1;
287          }
288        fprintf(f, "{");
289      if (*code != OP_TYPEEXACT) fprintf(f, "0,");      if (*code != OP_TYPEEXACT) fprintf(f, "0,");
290      fprintf(f, "%d}", GET2(code,1));      fprintf(f, "%d}", GET2(code,1));
291      if (*code == OP_TYPEMINUPTO) fprintf(f, "?");      if (*code == OP_TYPEMINUPTO) fprintf(f, "?");
# Line 243  for(;;) Line 327  for(;;)
327      goto CLASS_REF_REPEAT;      goto CLASS_REF_REPEAT;
328    
329      case OP_CALLOUT:      case OP_CALLOUT:
330      fprintf(f, "    %s %d", OP_names[*code], code[1]);      fprintf(f, "    %s %d %d %d", OP_names[*code], code[1], GET(code,2),
331          GET(code, 2 + LINK_SIZE));
332        break;
333    
334        case OP_PROP:
335        case OP_NOTPROP:
336        fprintf(f, "    %s %s", OP_names[*code], get_ucpname(code[1]));
337      break;      break;
338    
339      /* OP_XCLASS can only occur in UTF-8 mode. However, there's no harm in      /* OP_XCLASS can only occur in UTF-8 mode. However, there's no harm in
# Line 287  for(;;) Line 377  for(;;)
377              if (isprint(i)) fprintf(f, "%c", i); else fprintf(f, "\\x%02x", i);              if (isprint(i)) fprintf(f, "%c", i); else fprintf(f, "\\x%02x", i);
378              if (--j > i)              if (--j > i)
379                {                {
380                fprintf(f, "-");                if (j != i + 1) fprintf(f, "-");
381                if (j == '-' || j == ']') fprintf(f, "\\");                if (j == '-' || j == ']') fprintf(f, "\\");
382                if (isprint(j)) fprintf(f, "%c", j); else fprintf(f, "\\x%02x", j);                if (isprint(j)) fprintf(f, "%c", j); else fprintf(f, "\\x%02x", j);
383                }                }
# Line 304  for(;;) Line 394  for(;;)
394          int ch;          int ch;
395          while ((ch = *ccode++) != XCL_END)          while ((ch = *ccode++) != XCL_END)
396            {            {
397            ccode += 1 + print_char(f, ccode, TRUE);            if (ch == XCL_PROP)
398            if (ch == XCL_RANGE)              {
399                fprintf(f, "\\p{%s}", get_ucpname(*ccode++));
400                }
401              else if (ch == XCL_NOTPROP)
402                {
403                fprintf(f, "\\P{%s}", get_ucpname(*ccode++));
404                }
405              else
406              {              {
             fprintf(f, "-");  
407              ccode += 1 + print_char(f, ccode, TRUE);              ccode += 1 + print_char(f, ccode, TRUE);
408                if (ch == XCL_RANGE)
409                  {
410                  fprintf(f, "-");
411                  ccode += 1 + print_char(f, ccode, TRUE);
412                  }
413              }              }
414            }            }
415          }          }
# Line 329  for(;;) Line 430  for(;;)
430          case OP_CRQUERY:          case OP_CRQUERY:
431          case OP_CRMINQUERY:          case OP_CRMINQUERY:
432          fprintf(f, "%s", OP_names[*ccode]);          fprintf(f, "%s", OP_names[*ccode]);
433          extra = OP_lengths[*ccode];          extra += OP_lengths[*ccode];
434          break;          break;
435    
436          case OP_CRRANGE:          case OP_CRRANGE:
# Line 339  for(;;) Line 440  for(;;)
440          if (max == 0) fprintf(f, "{%d,}", min);          if (max == 0) fprintf(f, "{%d,}", min);
441          else fprintf(f, "{%d,%d}", min, max);          else fprintf(f, "{%d,%d}", min, max);
442          if (*ccode == OP_CRMINRANGE) fprintf(f, "?");          if (*ccode == OP_CRMINRANGE) fprintf(f, "?");
443          extra = OP_lengths[*ccode];          extra += OP_lengths[*ccode];
444          break;          break;
445          }          }
446        }        }
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