granicus.if.org Git - imagemagick/blob - MagickCore/vms.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                            V   V  M   M  SSSSS                              %
   7 %                            V   V  MM MM  SS                                 %
   8 %                            V   V  M M M   SSS                               %
   9 %                             V V   M   M     SS                              %
  10 %                              V    M   M  SSSSS                              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                         MagickCore VMS Utility Methods                      %
  14 %                                                                             %
  15 %                               Software Design                               %
  16 %                                 John Cristy                                 %
  17 %                                October 1994                                 %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %  The directory methods are strongly based on similar methods written
  37 %  by Rich Salz.
  38 %
  39 */
  40 \f
  41 #if defined(vms)
  42 /*
  43   Include declarations.
  44 */
  45 #include "MagickCore/studio.h"
  46 #include "MagickCore/string_.h"
  47 #include "MagickCore/memory_.h"
  48 #include "MagickCore/vms.h"
  49 \f
  50 #if !defined(_AXP_) && (!defined(__VMS_VER) || (__VMS_VER < 70000000))
  51 /*
  52 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  53 %                                                                             %
  54 %                                                                             %
  55 %                                                                             %
  56 %   c l o s e d i r                                                           %
  57 %                                                                             %
  58 %                                                                             %
  59 %                                                                             %
  60 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  61 %
  62 %  closedir() closes the named directory stream and frees the DIR structure.
  63 %
  64 %  The format of the closedir method is:
  65 %
  66 %
  67 %  A description of each parameter follows:
  68 %
  69 %    o entry: Specifies a pointer to a DIR structure.
  70 %
  71 %
  72 */
  73 void closedir(DIR *directory)
  74 {
  75   if (image->debug != MagickFalse)
  76     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
  77   assert(directory != (DIR *) NULL);
  78   directory->pattern=DestroyString(directory->pattern);
  79   directory=DestroyString(directory);
  80 }
  81 \f
  82 /*
  83 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  84 %                                                                             %
  85 %                                                                             %
  86 %                                                                             %
  87 %   o p e n d i r                                                             %
  88 %                                                                             %
  89 %                                                                             %
  90 %                                                                             %
  91 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  92 %
  93 %  opendir() opens the directory named by filename and associates a directory
  94 %  stream with it.
  95 %
  96 %  The format of the opendir method is:
  97 %
  98 %      opendir(entry)
  99 %
 100 %  A description of each parameter follows:
 101 %
 102 %    o entry: Specifies a pointer to a DIR structure.
 103 %
 104 %
 105 */
 106 DIR *opendir(char *name)
 107 {
 108   DIR
 109     *directory;
 110
 111   /*
 112     Allocate memory for handle and the pattern.
 113   */
 114   directory=(DIR *) AcquireMagickMemory(sizeof(DIR));
 115   if (directory == (DIR *) NULL)
 116     {
 117       errno=ENOMEM;
 118       return((DIR *) NULL);
 119     }
 120   if (strcmp(".",name) == 0)
 121     name="";
 122   directory->pattern=(char *) AcquireQuantumMemory(strlen(name)+sizeof("*.*")+
 123     1UL,sizeof(*directory->pattern));
 124   if (directory->pattern == (char *) NULL)
 125     {
 126       directory=DestroyString(directory);
 127       errno=ENOMEM;
 128       return(NULL);
 129     }
 130   /*
 131     Initialize descriptor.
 132   */
 133   (void) FormatLocaleString(directory->pattern,MaxTextExtent,"%s*.*",name);
 134   directory->context=0;
 135   directory->pat.dsc$a_pointer=directory->pattern;
 136   directory->pat.dsc$w_length=strlen(directory->pattern);
 137   directory->pat.dsc$b_dtype=DSC$K_DTYPE_T;
 138   directory->pat.dsc$b_class=DSC$K_CLASS_S;
 139   return(directory);
 140 }
 141 \f
 142 /*
 143 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 144 %                                                                             %
 145 %                                                                             %
 146 %                                                                             %
 147 %   r e a d d i r                                                             %
 148 %                                                                             %
 149 %                                                                             %
 150 %                                                                             %
 151 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 152 %
 153 %  readdir() returns a pointer to a structure representing the directory entry
 154 %  at the current position in the directory stream to which entry refers.
 155 %
 156 %  The format of the readdir
 157 %
 158 %      readdir(entry)
 159 %
 160 %  A description of each parameter follows:
 161 %
 162 %    o entry: Specifies a pointer to a DIR structure.
 163 %
 164 %
 165 */
 166 struct dirent *readdir(DIR *directory)
 167 {
 168   char
 169     buffer[sizeof(directory->entry.d_name)];
 170
 171   int
 172     status;
 173
 174   register char
 175     *p;
 176
 177   register int
 178     i;
 179
 180   struct dsc$descriptor_s
 181     result;
 182
 183   /*
 184     Initialize the result descriptor.
 185   */
 186   result.dsc$a_pointer=buffer;
 187   result.dsc$w_length=sizeof(buffer)-2;
 188   result.dsc$b_dtype=DSC$K_DTYPE_T;
 189   result.dsc$b_class=DSC$K_CLASS_S;
 190   status=lib$find_file(&directory->pat,&result,&directory->context);
 191   if ((status == RMS$_NMF) || (directory->context == 0L))
 192     return((struct dirent *) NULL);
 193   /*
 194     Lowercase all filenames.
 195   */
 196   buffer[sizeof(buffer)-1]='\0';
 197   for (p=buffer; *p; p++)
 198     if (isupper((unsigned char) *p))
 199       *p=tolower(*p);
 200   /*
 201     Skip any directory component and just copy the name.
 202   */
 203   p=buffer;
 204   while (isspace((unsigned char) *p) == 0)
 205     p++;
 206   *p='\0';
 207   p=strchr(buffer,']');
 208   if (p)
 209     (void) CopyMagickString(directory->entry.d_name,p+1,MaxTextExtent);
 210   else
 211     (void) CopyMagickString(directory->entry.d_name,buffer,MaxTextExtent);
 212   directory->entry.d_namlen=strlen(directory->entry.d_name);
 213   return(&directory->entry);
 214 }
 215 #endif /* !defined(_AXP_) && (!defined(__VMS_VER) || (__VMS_VER < 70000000)) */
 216 \f
 217 /*
 218 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 219 %                                                                             %
 220 %                                                                             %
 221 %                                                                             %
 222 %   I s M a g i c k C o n f l i c t                                           %
 223 %                                                                             %
 224 %                                                                             %
 225 %                                                                             %
 226 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 227 %
 228 %  VMSIsMagickConflict() returns true if the image format conflicts with a
 229 %  logical drive (.e.g. SYS$SCRATCH:).
 230 %
 231 %  Contributed by Forrest Cahoon (forrest@wiredaemons.com)
 232 %
 233 %  The format of the VMSIsMagickConflict method is:
 234 %
 235 %      MagickBooleanType VMSIsMagickConflict(const char *magick)
 236 %
 237 %  A description of each parameter follows:
 238 %
 239 %    o magick: Specifies the image format.
 240 %
 241 %
 242 */
 243 MagickExport MagickBooleanType VMSIsMagickConflict(const char *magick)
 244 {
 245   ile3
 246     item_list[2];
 247
 248   int
 249     device_class,
 250     status;
 251
 252   struct dsc$descriptor_s
 253     device;
 254
 255   assert(magick != (char *) NULL);
 256   device.dsc$w_length=strlen(magick);
 257   device.dsc$a_pointer=(char *) magick;
 258   device.dsc$b_class=DSC$K_CLASS_S;
 259   device.dsc$b_dtype=DSC$K_DTYPE_T;
 260   item_list[0].ile3$w_length=sizeof(device_class);
 261   item_list[0].ile3$w_code=DVI$_DEVCLASS;
 262   item_list[0].ile3$ps_bufaddr=&device_class;
 263   item_list[0].ile3$ps_retlen_addr=NULL;
 264   (void) ResetMagickMemory(&item_list[1],0,sizeof(item_list[1]));
 265   status=sys$getdviw(0,0,&device,&item_list,0,0,0,0);
 266   if ((status == SS$_NONLOCAL) ||
 267       ((status & 0x01) && (device_class & (DC$_DISK | DC$_TAPE))))
 268     return(MagickTrue);
 269   return(MagickFalse);
 270 }
 271 #endif /* defined(vms) */