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registry.c
/*
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% RRRR EEEEE GGG IIIII SSSSS TTTTT RRRR Y Y %
% R R E G I SS T R R Y Y %
% RRRR EEE G GGG I SSS T RRRR Y %
% R R E G G I SS T R R Y %
% R R EEEEE GGG IIIII SSSSS T R R Y %
% %
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% MagickCore Registry Methods %
% %
% Software Design %
% Cristy %
% March 2000 %
% %
% %
% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
%
*/
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/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/list.h"
#include "MagickCore/memory_.h"
#include "MagickCore/memory-private.h"
#include "MagickCore/registry.h"
#include "MagickCore/registry-private.h"
#include "MagickCore/splay-tree.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/timer-private.h"
#include "MagickCore/utility.h"
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/*
Typedef declarations.
*/
typedef struct _RegistryInfo
{
RegistryType
type;
void
*value;
size_t
signature;
} RegistryInfo;
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/*
Static declarations.
*/
static SplayTreeInfo
*registry = (SplayTreeInfo *) NULL;
static SemaphoreInfo
*registry_semaphore = (SemaphoreInfo *) NULL;
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/*
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% D e f i n e I m a g e R e g i s t r y %
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% DefineImageRegistry() associates a key/value pair with the image registry.
%
% The format of the DefineImageRegistry method is:
%
% MagickBooleanType DefineImageRegistry(const RegistryType type,
% const char *option,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o type: the type.
%
% o option: the option.
%
% o exception: the exception.
%
*/
MagickExport MagickBooleanType DefineImageRegistry(const RegistryType type,
const char *option,ExceptionInfo *exception)
{
char
key[MagickPathExtent],
value[MagickPathExtent];
char
*p;
assert(option != (const char *) NULL);
(void) CopyMagickString(key,option,MagickPathExtent);
for (p=key; *p != '\0'; p++)
if (*p == '=')
break;
*value='\0';
if (*p == '=')
(void) CopyMagickString(value,p+1,MagickPathExtent);
*p='\0';
return(SetImageRegistry(type,key,value,exception));
}
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/*
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% D e l e t e I m a g e R e g i s t r y %
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% DeleteImageRegistry() deletes a key from the image registry.
%
% The format of the DeleteImageRegistry method is:
%
% MagickBooleanType DeleteImageRegistry(const char *key)
%
% A description of each parameter follows:
%
% o key: the registry.
%
*/
MagickExport MagickBooleanType DeleteImageRegistry(const char *key)
{
assert(key != (const char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",key);
if (registry == (void *) NULL)
return(MagickFalse);
return(DeleteNodeFromSplayTree(registry,key));
}
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/*
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% G e t I m a g e R e g i s t r y %
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% GetImageRegistry() returns a value associated with an image registry key.
%
% The format of the GetImageRegistry method is:
%
% void *GetImageRegistry(const RegistryType type,const char *key,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o type: the type.
%
% o key: the key.
%
% o exception: the exception.
%
*/
MagickExport void *GetImageRegistry(const RegistryType type,const char *key,
ExceptionInfo *exception)
{
void
*value;
RegistryInfo
*registry_info;
assert(key != (const char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",key);
if (registry == (void *) NULL)
return((void *) NULL);
registry_info=(RegistryInfo *) GetValueFromSplayTree(registry,key);
if (registry_info == (void *) NULL)
return((void *) NULL);
value=(void *) NULL;
switch (type)
{
case ImageRegistryType:
{
if (type == registry_info->type)
value=(void *) CloneImageList((Image *) registry_info->value,exception);
break;
}
case ImageInfoRegistryType:
{
if (type == registry_info->type)
value=(void *) CloneImageInfo((ImageInfo *) registry_info->value);
break;
}
case StringRegistryType:
{
switch (registry_info->type)
{
case ImageRegistryType:
{
value=(Image *) ConstantString(((Image *)
registry_info->value)->filename);
break;
}
case ImageInfoRegistryType:
{
value=(Image *) ConstantString(((ImageInfo *)
registry_info->value)->filename);
break;
}
case StringRegistryType:
{
value=(void *) ConstantString((char *) registry_info->value);
break;
}
default:
break;
}
break;
}
default:
break;
}
return(value);
}
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/*
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% G e t N e x t I m a g e R e g i s t r y %
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% GetNextImageRegistry() gets the next image registry value.
%
% The format of the GetNextImageRegistry method is:
%
% char *GetNextImageRegistry(void)
%
*/
MagickExport char *GetNextImageRegistry(void)
{
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
if (registry == (void *) NULL)
return((char *) NULL);
return((char *) GetNextKeyInSplayTree(registry));
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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+ R e g i s t r y C o m p o n e n t G e n e s i s %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% RegistryComponentGenesis() instantiates the registry component.
%
% The format of the RegistryComponentGenesis method is:
%
% MagickBooleanType RegistryComponentGenesis(void)
%
*/
MagickPrivate MagickBooleanType RegistryComponentGenesis(void)
{
if (registry_semaphore == (SemaphoreInfo *) NULL)
registry_semaphore=AcquireSemaphoreInfo();
return(MagickTrue);
}
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/*
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% R e g i s t r y C o m p o n e n t T e r m i n u s %
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% RegistryComponentTerminus() destroys the registry component.
%
% The format of the DestroyDefines method is:
%
% void RegistryComponentTerminus(void)
%
*/
MagickPrivate void RegistryComponentTerminus(void)
{
if (registry_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&registry_semaphore);
LockSemaphoreInfo(registry_semaphore);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
if (registry != (void *) NULL)
registry=DestroySplayTree(registry);
UnlockSemaphoreInfo(registry_semaphore);
RelinquishSemaphoreInfo(&registry_semaphore);
}
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/*
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% R e m o v e I m a g e R e g i s t r y %
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% RemoveImageRegistry() removes a key from the image registry and returns its
% value.
%
% The format of the RemoveImageRegistry method is:
%
% void *RemoveImageRegistry(const char *key)
%
% A description of each parameter follows:
%
% o key: the registry.
%
*/
MagickExport void *RemoveImageRegistry(const char *key)
{
assert(key != (const char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",key);
if (registry == (void *) NULL)
return((void *) NULL);
return(RemoveNodeFromSplayTree(registry,key));
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% R e s e t I m a g e R e g i s t r y I t e r a t o r %
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% %
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% ResetImageRegistryIterator() resets the registry iterator. Use it in
% conjunction with GetNextImageRegistry() to iterate over all the values
% in the image registry.
%
% The format of the ResetImageRegistryIterator method is:
%
% ResetImageRegistryIterator(void)
%
*/
MagickExport void ResetImageRegistryIterator(void)
{
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
if (registry == (void *) NULL)
return;
ResetSplayTreeIterator(registry);
}
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
% S e t I m a g e R e g i s t r y %
% %
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SetImageRegistry() associates a value with an image registry key.
%
% The format of the SetImageRegistry method is:
%
% MagickBooleanType SetImageRegistry(const RegistryType type,
% const char *key,const void *value,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o type: the type.
%
% o key: the key.
%
% o value: the value.
%
% o exception: the exception.
%
*/
static void *DestroyRegistryNode(void *registry_info)
{
RegistryInfo
*p;
p=(RegistryInfo *) registry_info;
switch (p->type)
{
case StringRegistryType:
default:
{
p->value=RelinquishMagickMemory(p->value);
break;
}
case ImageRegistryType:
{
p->value=(void *) DestroyImageList((Image *) p->value);
break;
}
case ImageInfoRegistryType:
{
p->value=(void *) DestroyImageInfo((ImageInfo *) p->value);
break;
}
}
return(RelinquishMagickMemory(p));
}
MagickExport MagickBooleanType SetImageRegistry(const RegistryType type,
const char *key,const void *value,ExceptionInfo *exception)
{
RegistryInfo
*registry_info;
void
*clone_value;
assert(key != (const char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",key);
if (value == (const void *) NULL)
return(MagickFalse);
clone_value=(void *) NULL;
switch (type)
{
case StringRegistryType:
default:
{
const char
*string;
string=(const char *) value;
if (LocaleCompare(key,"date:precision") == 0)
SetMagickDatePrecision((size_t) StringToInteger(string));
clone_value=(void *) ConstantString(string);
break;
}
case ImageRegistryType:
{
const Image
*image;
image=(const Image *) value;
if ((image == (const Image *) NULL) ||
(image->signature != MagickCoreSignature))
{
(void) ThrowMagickException(exception,GetMagickModule(),RegistryError,
"UnableToSetRegistry","%s",key);
return(MagickFalse);
}
clone_value=(void *) CloneImageList(image,exception);
break;
}
case ImageInfoRegistryType:
{
const ImageInfo
*image_info;
image_info=(const ImageInfo *) value;
if ((image_info == (const ImageInfo *) NULL) ||
(image_info->signature != MagickCoreSignature))
{
(void) ThrowMagickException(exception,GetMagickModule(),RegistryError,
"UnableToSetRegistry","%s",key);
return(MagickFalse);
}
clone_value=(void *) CloneImageInfo(image_info);
break;
}
}
if (clone_value == (void *) NULL)
return(MagickFalse);
registry_info=(RegistryInfo *) AcquireCriticalMemory(sizeof(*registry_info));
(void) memset(registry_info,0,sizeof(*registry_info));
registry_info->type=type;
registry_info->value=clone_value;
registry_info->signature=MagickCoreSignature;
if (registry == (SplayTreeInfo *) NULL)
{
if (registry_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&registry_semaphore);
LockSemaphoreInfo(registry_semaphore);
if (registry == (SplayTreeInfo *) NULL)
registry=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
DestroyRegistryNode);
UnlockSemaphoreInfo(registry_semaphore);
}
return(AddValueToSplayTree(registry,ConstantString(key),registry_info));
}
SemaphoreInfo
Definition semaphore.c:61
_ExceptionInfo
Definition exception.h:102
_ImageInfo
Definition image.h:359
_Image
Definition image.h:132
_RegistryInfo
Definition registry.c:62
_SplayTreeInfo
Definition splay-tree.c:84