MagickWand  6.9.12-67
Convert, Edit, Or Compose Bitmap Images
 All Data Structures
conjure.c
1 /*
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13 % Interpret Magick Scripting Language. %
14 % %
15 % Software Design %
16 % Cristy %
17 % December 2001 %
18 % %
19 % %
20 % Copyright 1999-2021 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 % https://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. %
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35 %
36 % The conjure program gives you the ability to perform custom image processing
37 % tasks from a script written in the Magick Scripting Language (MSL). MSL is
38 % XML-based and consists of action statements with attributes. Actions include
39 % reading an image, processing an image, getting attributes from an image,
40 % writing an image, and more. An attribute is a key/value pair that modifies
41 % the behavior of an action.
42 %
43 */
44 
45 /*
46  Include declarations.
47 */
48 #include "wand/studio.h"
49 #include "wand/MagickWand.h"
50 #include "wand/mogrify-private.h"
51 
52 /*
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54 % %
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57 + C o n j u r e I m a g e C o m m a n d %
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62 %
63 % ConjureImageCommand() describes the format and characteristics of one or
64 % more image files. It will also report if an image is incomplete or corrupt.
65 % The information displayed includes the scene number, the file name, the
66 % width and height of the image, whether the image is colormapped or not,
67 % the number of colors in the image, the number of bytes in the image, the
68 % format of the image (JPEG, PNM, etc.), and finally the number of seconds
69 % it took to read and process the image.
70 %
71 % The format of the ConjureImageCommand method is:
72 %
73 % MagickBooleanType ConjureImageCommand(ImageInfo *image_info,int argc,
74 % char **argv,char **metadata,ExceptionInfo *exception)
75 %
76 % A description of each parameter follows:
77 %
78 % o image_info: the image info.
79 %
80 % o argc: the number of elements in the argument vector.
81 %
82 % o argv: A text array containing the command line arguments.
83 %
84 % o metadata: any metadata is returned here.
85 %
86 % o exception: return any errors or warnings in this structure.
87 %
88 */
89 
90 static MagickBooleanType ConjureUsage(void)
91 {
92  static const char
93  miscellaneous[] =
94  " -debug events display copious debugging information\n"
95  " -help print program options\n"
96  " -list type print a list of supported option arguments\n"
97  " -log format format of debugging information\n"
98  " -version print version information",
99  settings[] =
100  " -monitor monitor progress\n"
101  " -quiet suppress all warning messages\n"
102  " -regard-warnings pay attention to warning messages\n"
103  " -seed value seed a new sequence of pseudo-random numbers\n"
104  " -verbose print detailed information about the image";
105 
106  ListMagickVersion(stdout);
107  (void) printf("Usage: %s [options ...] file [ [options ...] file ...]\n",
108  GetClientName());
109  (void) printf("\nImage Settings:\n");
110  (void) puts(settings);
111  (void) printf("\nMiscellaneous Options:\n");
112  (void) puts(miscellaneous);
113  (void) printf("\nIn addition, define any key value pairs required by "
114  "your script. For\nexample,\n\n");
115  (void) printf(" conjure -size 100x100 -color blue -foo bar script.msl\n");
116  return(MagickTrue);
117 }
118 
119 WandExport MagickBooleanType ConjureImageCommand(ImageInfo *image_info,
120  int argc,char **argv,char **wand_unused(metadata),ExceptionInfo *exception)
121 {
122 #define DestroyConjure() \
123 { \
124  image=DestroyImageList(image); \
125  for (i=0; i < (ssize_t) argc; i++) \
126  argv[i]=DestroyString(argv[i]); \
127  argv=(char **) RelinquishMagickMemory(argv); \
128 }
129 #define ThrowConjureException(asperity,tag,option) \
130 { \
131  (void) ThrowMagickException(exception,GetMagickModule(),asperity,tag,"`%s'", \
132  option); \
133  DestroyConjure(); \
134  return(MagickFalse); \
135 }
136 #define ThrowConjureInvalidArgumentException(option,argument) \
137 { \
138  (void) ThrowMagickException(exception,GetMagickModule(),OptionError, \
139  "InvalidArgument","`%s': %s",option,argument); \
140  DestroyConjure(); \
141  return(MagickFalse); \
142 }
143 
144  char
145  *option;
146 
147  Image
148  *image;
149 
150  MagickStatusType
151  status;
152 
153  ssize_t
154  i;
155 
156  ssize_t
157  number_images;
158 
159  wand_unreferenced(metadata);
160 
161  /*
162  Set defaults.
163  */
164  assert(image_info != (ImageInfo *) NULL);
165  assert(image_info->signature == MagickCoreSignature);
166  assert(exception != (ExceptionInfo *) NULL);
167  if (IsEventLogging() != MagickFalse)
168  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
169  if (argc < 2)
170  return(ConjureUsage());
171  image=NewImageList();
172  number_images=0;
173  option=(char *) NULL;
174  /*
175  Conjure an image.
176  */
177  ReadCommandlLine(argc,&argv);
178  status=ExpandFilenames(&argc,&argv);
179  if (status == MagickFalse)
180  ThrowConjureException(ResourceLimitError,"MemoryAllocationFailed",
181  GetExceptionMessage(errno));
182  for (i=1; i < (ssize_t) argc; i++)
183  {
184  option=argv[i];
185  if (IsCommandOption(option) != MagickFalse)
186  {
187  if (LocaleCompare("concurrent",option+1) == 0)
188  break;
189  if (LocaleCompare("debug",option+1) == 0)
190  {
191  ssize_t
192  event;
193 
194  if (*option == '+')
195  break;
196  i++;
197  if (i == (ssize_t) argc)
198  ThrowConjureException(OptionError,"MissingArgument",option);
199  event=ParseCommandOption(MagickLogEventOptions,MagickFalse,argv[i]);
200  if (event < 0)
201  ThrowConjureException(OptionError,"UnrecognizedEventType",
202  argv[i]);
203  (void) SetLogEventMask(argv[i]);
204  continue;
205  }
206  if (LocaleCompare("duration",option+1) == 0)
207  {
208  if (*option == '+')
209  break;
210  i++;
211  if (i == (ssize_t) argc)
212  ThrowConjureException(OptionError,"MissingArgument",option);
213  if (IsGeometry(argv[i]) == MagickFalse)
214  ThrowConjureInvalidArgumentException(option,argv[i]);
215  continue;
216  }
217  if ((LocaleCompare("help",option+1) == 0) ||
218  (LocaleCompare("-help",option+1) == 0))
219  {
220  if (*option == '-')
221  {
222  DestroyConjure();
223  return(ConjureUsage());
224  }
225  continue;
226  }
227  if (LocaleCompare("log",option+1) == 0)
228  {
229  if (*option == '-')
230  {
231  i++;
232  if (i == (ssize_t) argc)
233  ThrowConjureException(OptionError,"MissingLogFormat",option);
234  (void) SetLogFormat(argv[i]);
235  }
236  continue;
237  }
238  if (LocaleCompare("monitor",option+1) == 0)
239  continue;
240  if (LocaleCompare("quiet",option+1) == 0)
241  continue;
242  if (LocaleCompare("regard-warnings",option+1) == 0)
243  break;
244  if (LocaleCompare("seed",option+1) == 0)
245  {
246  if (*option == '+')
247  break;
248  i++;
249  if (i == (ssize_t) argc)
250  ThrowConjureException(OptionError,"MissingArgument",option);
251  if (IsGeometry(argv[i]) == MagickFalse)
252  ThrowConjureInvalidArgumentException(option,argv[i]);
253  break;
254  }
255  if (LocaleCompare("verbose",option+1) == 0)
256  {
257  image_info->verbose=(*option == '-') ? MagickTrue : MagickFalse;
258  continue;
259  }
260  if ((LocaleCompare("version",option+1) == 0) ||
261  (LocaleCompare("-version",option+1) == 0))
262  {
263  ListMagickVersion(stdout);
264  return(MagickTrue);
265  }
266  /*
267  Persist key/value pair.
268  */
269  (void) DeleteImageOption(image_info,option+1);
270  status=SetImageOption(image_info,option+1,argv[i+1]);
271  if (status == MagickFalse)
272  ThrowConjureException(ImageError,"UnableToPersistKey",option);
273  i++;
274  continue;
275  }
276  /*
277  Interpret MSL script.
278  */
279  (void) DeleteImageOption(image_info,"filename");
280  status=SetImageOption(image_info,"filename",argv[i]);
281  if (status == MagickFalse)
282  ThrowConjureException(ImageError,"UnableToPersistKey",argv[i]);
283  (void) FormatLocaleString(image_info->filename,MaxTextExtent,"%s",argv[i]);
284  (void) SetImageOption(image_info,"filename",argv[i]);
285  image=ReadImages(image_info,exception);
286  CatchException(exception);
287  if (image != (Image *) NULL)
288  image=DestroyImageList(image);
289  status=image != (Image *) NULL ? MagickTrue : MagickFalse;
290  number_images++;
291  }
292  if (i != (ssize_t) argc)
293  ThrowConjureException(OptionError,"MissingAnImageFilename",argv[i]);
294  if (number_images == 0)
295  ThrowConjureException(OptionError,"MissingAnImageFilename",argv[argc-1]);
296  if (image != (Image *) NULL)
297  image=DestroyImageList(image);
298  for (i=0; i < (ssize_t) argc; i++)
299  argv[i]=DestroyString(argv[i]);
300  argv=(char **) RelinquishMagickMemory(argv);
301  return(status != 0 ? MagickTrue : MagickFalse);
302 }