misc/debugstr.c

   1 #include <stdarg.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <ctype.h>
   6
   7 #include "debugstr.h"
   8 #include "debugtools.h"
   9 #include "xmalloc.h"
  10
  11 /* ---------------------------------------------------------------------- */
  12
  13 #define SAVE_STRING_COUNT 50
  14 static void *strings[SAVE_STRING_COUNT];
  15 static int nextstring;
  16
  17 /* ---------------------------------------------------------------------- */
  18
  19 static void *
  20 gimme1 (int n)
  21 {
  22   void *res;
  23   if (strings[nextstring]) free (strings[nextstring]);
  24   res = strings[nextstring] = xmalloc (n);
  25   if (++nextstring == SAVE_STRING_COUNT) nextstring = 0;
  26   return res;
  27 }
  28
  29 /* ---------------------------------------------------------------------- */
  30
  31 LPSTR
  32 debugstr_an (LPCSTR src, int n)
  33 {
  34   LPSTR dst, res;
  35
  36   if (!src) return "(null)";
  37   if (n < 0) n = 0;
  38   dst = res = gimme1 (n * 4 + 10);
  39   *dst++ = '"';
  40   while (n-- > 0 && *src)
  41     {
  42       BYTE c = *src++;
  43       switch (c)
  44         {
  45         case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
  46         case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
  47         case '\t': *dst++ = '\\'; *dst++ = 't'; break;
  48         case '"': *dst++ = '\\'; *dst++ = '"'; break;
  49         case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
  50         default:
  51           if (c >= ' ' && c <= 126)
  52             *dst++ = c;
  53           else
  54             {
  55               *dst++ = '\\';
  56               *dst++ = '0' + ((c >> 6) & 7);
  57               *dst++ = '0' + ((c >> 3) & 7);
  58               *dst++ = '0' + ((c >> 0) & 7);
  59             }
  60         }
  61     }
  62   if (*src)
  63     {
  64       *dst++ = '.';
  65       *dst++ = '.';
  66       *dst++ = '.';
  67     }
  68   *dst++ = '"';
  69   *dst = 0;
  70   return res;
  71 }
  72
  73 /* ---------------------------------------------------------------------- */
  74
  75 LPSTR
  76 debugstr_a (LPCSTR s)
  77 {
  78   return debugstr_an (s, 80);
  79 }
  80
  81 /* ---------------------------------------------------------------------- */
  82
  83 LPSTR
  84 debugstr_wn (LPCWSTR src, int n)
  85 {
  86   LPSTR dst, res;
  87
  88   if (!src) return "(null)";
  89   if (n < 0) n = 0;
  90   dst = res = gimme1 (n * 4 + 10);
  91   *dst++ = '"';
  92   while (n-- > 0 && *src)
  93     {
  94       WORD c = *src++;
  95       switch (c)
  96         {
  97         case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
  98         case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
  99         case '\t': *dst++ = '\\'; *dst++ = 't'; break;
 100         case '"': *dst++ = '\\'; *dst++ = '"'; break;
 101         case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
 102         default:
 103           if (c >= ' ' && c <= 126)
 104             *dst++ = c;
 105           else
 106             {
 107               *dst++ = '\\';
 108               *dst++ = '0' + ((c >> 6) & 7);
 109               *dst++ = '0' + ((c >> 3) & 7);
 110               *dst++ = '0' + ((c >> 0) & 7);
 111             }
 112         }
 113     }
 114   if (*src)
 115     {
 116       *dst++ = '.';
 117       *dst++ = '.';
 118       *dst++ = '.';
 119     }
 120   *dst++ = '"';
 121   *dst = 0;
 122   return res;
 123 }
 124
 125 /* ---------------------------------------------------------------------- */
 126
 127 LPSTR
 128 debugstr_w (LPCWSTR s)
 129 {
 130   return debugstr_wn (s, 80);
 131 }
 132
 133 /* ---------------------------------------------------------------------- */
 134 /* This routine returns a nicely formated name of the resource res
 135    If the resource name is a string, it will return '<res-name>'
 136    If it is a number, it will return #<4-digit-hex-number> */
 137 LPSTR debugres_a( LPCSTR res )
 138 {
 139     char resname[10];
 140     if (HIWORD(res)) return debugstr_a(res);
 141     sprintf(resname, "#%04x", LOWORD(res));
 142     return debugstr_a (resname);
 143 }
 144
 145 LPSTR debugres_w( LPCWSTR res )
 146 {
 147     char resname[10];
 148     if (HIWORD(res)) return debugstr_w(res);
 149     sprintf(resname, "#%04x", LOWORD(res));
 150     return debugstr_a (resname);
 151 }
 152
 153 /* ---------------------------------------------------------------------- */
 154
 155 void debug_dumpstr (LPCSTR s)
 156 {
 157   fputc ('"', stderr);
 158   while (*s)
 159     {
 160       switch (*s)
 161         {
 162         case '\\':
 163         case '"':
 164           fputc ('\\', stderr);
 165           fputc (*s, stderr);
 166           break;
 167         case '\n':
 168           fputc ('\\', stderr);
 169           fputc ('n', stderr);
 170           break;
 171         case '\r':
 172           fputc ('\\', stderr);
 173           fputc ('r', stderr);
 174           break;
 175         case '\t':
 176           fputc ('\\', stderr);
 177           fputc ('t', stderr);
 178           break;
 179         default:
 180           if (*s<' ')
 181             fprintf (stderr, "\\0x%02x", *s);
 182           else
 183             fputc (*s, stderr);
 184         }
 185       s++;
 186     }
 187   fputc ('"', stderr);
 188 }
 189
 190 /* ---------------------------------------------------------------------- */
 191
 192 int dbg_printf(const char *format, ...)
 193 {
 194     int ret;
 195     va_list valist;
 196
 197     va_start(valist, format);
 198     ret = vfprintf(stderr, format, valist);
 199     va_end(valist);
 200     return ret;
 201 }
 202
 203
 204
 205 /*--< Function >---------------------------------------------------------
 206 **
 207 **              debugstr_hex_dump
 208 **
 209 **  Description:
 210 **      This function creates a hex dump, with a readable ascii
 211 **  section, for displaying memory.
 212 **
 213 **  Parameters:
 214 **      1.  ptr             Pointer to memory
 215 **      2.  len             How much to dump.
 216 **
 217 **  Returns:
 218 **    Temporarily allocated buffer, with the hex dump in it.
 219 **  Don't rely on this pointer being around for very long, just
 220 **  long enough to use it in a TRACE statement; e.g.:
 221 **  TRACE("struct dump is \n%s", debugstr_hex_dump(&x, sizeof(x)));
 222 **
 223 **-------------------------------------------------------------------------*/
 224 LPSTR
 225 debugstr_hex_dump (const void *ptr, int len)
 226 {
 227     /* Locals */
 228     char          dumpbuf[59];
 229     char          charbuf[20];
 230     char          tempbuf[8];
 231     const char    *p;
 232     int           i;
 233     unsigned int  nosign;
 234     LPSTR         dst;
 235     LPSTR         outptr;
 236
 237 /* Begin function dbg_hex_dump */
 238
 239     /*-----------------------------------------------------------------------
 240     **  Allocate an output buffer
 241     **      A reasonable value is one line overhand (80 chars), and
 242     **      then one line (80) for every 16 bytes.
 243     **---------------------------------------------------------------------*/
 244     outptr = dst = gimme1 ((len * (80 / 16)) + 80);
 245
 246     /*-----------------------------------------------------------------------
 247     **  Loop throught the input buffer, one character at a time
 248     **---------------------------------------------------------------------*/
 249     for (i = 0, p = ptr; (i < len); i++, p++)
 250     {
 251
 252         /*-------------------------------------------------------------------
 253         **  If we're just starting a line,
 254         **      we need to possibly flush the old line, and then
 255         **      intialize the line buffer.
 256         **-----------------------------------------------------------------*/
 257         if ((i % 16) == 0)
 258         {
 259             if (i)
 260             {
 261                 sprintf(outptr, "  %-43.43s   %-16.16s\n", dumpbuf, charbuf);
 262                 outptr += strlen(outptr);
 263             }
 264             sprintf (dumpbuf, "%04x: ", i);
 265             strcpy (charbuf, "");
 266         }
 267
 268         /*-------------------------------------------------------------------
 269         **  Add the current data byte to the dump section.
 270         **-----------------------------------------------------------------*/
 271         nosign = (unsigned char) *p;
 272         sprintf (tempbuf, "%02X", nosign);
 273
 274         /*-------------------------------------------------------------------
 275         **  If we're two DWORDS through, add a hyphen for readability,
 276         **      if it's a DWORD boundary, add a space for more
 277         **      readability.
 278         **-----------------------------------------------------------------*/
 279         if ((i % 16) == 7)
 280             strcat(tempbuf, " - ");
 281         else if ( (i % 4) == 3)
 282             strcat(tempbuf, " ");
 283         strcat (dumpbuf, tempbuf);
 284
 285         /*-------------------------------------------------------------------
 286         **  Add the current byte to the character display part of the
 287         **      hex dump
 288         **-----------------------------------------------------------------*/
 289         sprintf (tempbuf, "%c", isprint(*p) ? *p : '.');
 290         strcat (charbuf, tempbuf);
 291     }
 292
 293     /*-----------------------------------------------------------------------
 294     **  Flush the last line, if any
 295     **---------------------------------------------------------------------*/
 296     if (i > 0)
 297     {
 298         sprintf(outptr, "  %-43.43s   %-16.16s\n", dumpbuf, charbuf);
 299         outptr += strlen(outptr);
 300     }
 301
 302     return(dst);
 303 } /* End function dbg_hex_dump */
 304
 305
 306