Class AbstractStringDataType
- java.lang.Object
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- ghidra.program.model.data.AbstractDataType
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- ghidra.program.model.data.DataTypeImpl
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- ghidra.program.model.data.BuiltIn
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- ghidra.program.model.data.AbstractStringDataType
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- All Implemented Interfaces:
BuiltInDataType
,DataType
,DataTypeWithCharset
,Dynamic
,ExtensionPoint
- Direct Known Subclasses:
PascalString255DataType
,PascalStringDataType
,PascalUnicodeDataType
,StringDataType
,StringUTF8DataType
,TerminatedStringDataType
,TerminatedUnicode32DataType
,TerminatedUnicodeDataType
,Unicode32DataType
,UnicodeDataType
public abstract class AbstractStringDataType extends BuiltIn implements Dynamic, DataTypeWithCharset
Common base class for all Ghidra stringDataType
s.See
StringDataType
for information about string variations and configuration details.Sub-classes generally only need to implement a constructor that calls the mega-constructor
AbstractStringDataType.AbstractStringDataType(lots,of,params)
and theDataType.clone(DataTypeManager)
method.
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Field Summary
Fields Modifier and Type Field Description static SettingsDefinition[]
COMMON_STRING_SETTINGS_DEFS
static SettingsDefinition[]
COMMON_WITH_CHARSET_STRING_SETTINGS_DEFS
static java.lang.String
DEFAULT_ABBREV_PREFIX
static java.lang.String
DEFAULT_LABEL
static java.lang.String
DEFAULT_LABEL_PREFIX
static java.lang.String
DEFAULT_UNICODE_ABBREV_PREFIX
static java.lang.String
DEFAULT_UNICODE_LABEL
static java.lang.String
DEFAULT_UNICODE_LABEL_PREFIX
static java.lang.String
USE_CHARSET_DEF_DEFAULT
A symbolic name to signal that the null value being passed for the charset name param indicates that the default charset (ie.-
Fields inherited from class ghidra.program.model.data.DataTypeImpl
defaultSettings
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Fields inherited from class ghidra.program.model.data.AbstractDataType
categoryPath, dataMgr, name
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Fields inherited from interface ghidra.program.model.data.DataType
CONFLICT_SUFFIX, DEFAULT, NO_LAST_CHANGE_TIME, NO_SOURCE_SYNC_TIME, VOID
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Constructor Summary
Constructors Modifier Constructor Description protected
AbstractStringDataType(java.lang.String name, java.lang.String mnemonic, java.lang.String defaultLabel, java.lang.String defaultLabelPrefix, java.lang.String defaultAbbrevLabelPrefix, java.lang.String description, java.lang.String charsetName, DataType replacementDataType, StringLayoutEnum stringLayout, DataTypeManager dtm)
Protected constructor used by derived types to provide all their datatype details.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
canSpecifyLength()
Determine if the length may be specified for an instanceof this datatype (e.g.,Data
,Array
,DataTypeComponent
, etc.).byte[]
encodeRepresentation(java.lang.String repr, MemBuffer buf, Settings settings, int length)
Encode bytes according to the display format for this type.byte[]
encodeValue(java.lang.Object value, MemBuffer buf, Settings settings, int length)
Encode bytes from an Object appropriate for this DataType.protected SettingsDefinition[]
getBuiltInSettingsDefinitions()
Gets a list of all the settingsDefinitions used by this datatype.java.lang.String
getCharsetName(Settings settings)
Get the character set for a specific data type and settingsjava.lang.String
getDefaultAbbreviatedLabelPrefix()
Returns the prefix to use for this datatype when an abbreviated prefix is desired.java.lang.String
getDefaultLabelPrefix()
Returns the appropriate string to use as the default label prefix in the absence of any data.java.lang.String
getDefaultLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options)
Returns the appropriate string to use as the default label prefix.java.lang.String
getDefaultOffcutLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options, int offcutLength)
Returns the appropriate string to use as the default label prefix.java.lang.String
getDescription()
Get a String briefly describing this DataType.int
getLength()
Get the length (number of 8-bit bytes) of this DataType.int
getLength(MemBuffer buf, int maxLength)
Compute the length for this data-type which corresponds to the specified memory location.java.lang.String
getMnemonic(Settings settings)
Get the mnemonic for this DataType.DataType
getReplacementBaseType()
Returns a suitable replacement base data-type for pointers and arrays when exporting to C codejava.lang.String
getRepresentation(MemBuffer buf, Settings settings, int length)
Get bytes from memory in a printable format for this type.StringDataInstance
getStringDataInstance(MemBuffer buf, Settings settings, int length)
Creates a newStringDataInstance
using the bytes in the supplied MemBuffer and options provided by this DataType.StringLayoutEnum
getStringLayout()
java.lang.Object
getValue(MemBuffer buf, Settings settings, int length)
Get the data in the form of the appropriate Object for this DataType.java.lang.Class<?>
getValueClass(Settings settings)
Get the Class of the value to be returned by this datatype.boolean
isEncodable()
Check if this type supports encoding (patching)-
Methods inherited from class ghidra.program.model.data.BuiltIn
addParent, copy, dataTypeDeleted, dataTypeNameChanged, dataTypeReplaced, dataTypeSizeChanged, dependsOn, getCTypeDeclaration, getCTypeDeclaration, getCTypeDeclaration, getCTypeDeclaration, getDecompilerDisplayName, getLastChangeTime, getSettingsDefinitions, getUniversalID, isEquivalent, removeParent, setCategoryPath, setName, setNameAndCategory
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Methods inherited from class ghidra.program.model.data.DataTypeImpl
equals, getAlignment, getDefaultSettings, getLastChangeTimeInSourceArchive, getParents, getPathName, getSourceArchive, hashCode, notifyAlignmentChanged, notifyDeleted, notifyNameChanged, notifyParents, notifyReplaced, notifySizeChanged, replaceWith, setDefaultSettings, setDescription, setLastChangeTime, setLastChangeTimeInSourceArchive, setSourceArchive
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Methods inherited from class ghidra.program.model.data.AbstractDataType
dataTypeAlignmentChanged, getCategoryPath, getDataOrganization, getDataTypeManager, getDataTypePath, getDisplayName, getDocs, getName, hasLanguageDependantLength, isDeleted, isNotYetDefined, isZeroLength, toString
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface ghidra.program.model.data.BuiltInDataType
getCTypeDeclaration
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Methods inherited from interface ghidra.program.model.data.DataType
addParent, clone, copy, dataTypeAlignmentChanged, dataTypeDeleted, dataTypeNameChanged, dataTypeReplaced, dataTypeSizeChanged, dependsOn, getAlignment, getCategoryPath, getDataOrganization, getDataTypeManager, getDataTypePath, getDefaultSettings, getDisplayName, getDocs, getLastChangeTime, getLastChangeTimeInSourceArchive, getName, getParents, getPathName, getSettingsDefinitions, getSourceArchive, getUniversalID, hasLanguageDependantLength, isDeleted, isEquivalent, isNotYetDefined, isZeroLength, removeParent, replaceWith, setCategoryPath, setDefaultSettings, setDescription, setLastChangeTime, setLastChangeTimeInSourceArchive, setName, setNameAndCategory, setSourceArchive
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Methods inherited from interface ghidra.program.model.data.DataTypeWithCharset
encodeCharacterRepresentation, encodeCharacterValue
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Field Detail
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COMMON_STRING_SETTINGS_DEFS
public static final SettingsDefinition[] COMMON_STRING_SETTINGS_DEFS
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COMMON_WITH_CHARSET_STRING_SETTINGS_DEFS
public static final SettingsDefinition[] COMMON_WITH_CHARSET_STRING_SETTINGS_DEFS
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DEFAULT_UNICODE_LABEL
public static final java.lang.String DEFAULT_UNICODE_LABEL
- See Also:
- Constant Field Values
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DEFAULT_UNICODE_LABEL_PREFIX
public static final java.lang.String DEFAULT_UNICODE_LABEL_PREFIX
- See Also:
- Constant Field Values
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DEFAULT_UNICODE_ABBREV_PREFIX
public static final java.lang.String DEFAULT_UNICODE_ABBREV_PREFIX
- See Also:
- Constant Field Values
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DEFAULT_LABEL
public static final java.lang.String DEFAULT_LABEL
- See Also:
- Constant Field Values
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DEFAULT_LABEL_PREFIX
public static final java.lang.String DEFAULT_LABEL_PREFIX
- See Also:
- Constant Field Values
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DEFAULT_ABBREV_PREFIX
public static final java.lang.String DEFAULT_ABBREV_PREFIX
- See Also:
- Constant Field Values
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USE_CHARSET_DEF_DEFAULT
public static final java.lang.String USE_CHARSET_DEF_DEFAULT
A symbolic name to signal that the null value being passed for the charset name param indicates that the default charset (ie. ASCII) should be used.
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Constructor Detail
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AbstractStringDataType
protected AbstractStringDataType(java.lang.String name, java.lang.String mnemonic, java.lang.String defaultLabel, java.lang.String defaultLabelPrefix, java.lang.String defaultAbbrevLabelPrefix, java.lang.String description, java.lang.String charsetName, DataType replacementDataType, StringLayoutEnum stringLayout, DataTypeManager dtm)
Protected constructor used by derived types to provide all their datatype details.- Parameters:
name
- Name of this datatypemnemonic
- Mnemonic of this datatypedefaultLabel
- Label string for this datatype. SeedefaultLabel
.defaultLabelPrefix
- Label prefix string for this datatype. SeedefaultLabelPrefix
.defaultAbbrevLabelPrefix
- Abbreviated label prefix for this datatype. SeedefaultAbbrevLabelPrefix
.description
- Description of this datatype.charsetName
- Charset name for this string datatype. If null the settings of the data instance will be queried for acharset
.replacementDataType
- ReplacementDataType
.stringLayout
-stringLayout
controls how the string is laid out in memory.dtm
-DataTypeManager
for this datatype, null ok.
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Method Detail
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getMnemonic
public java.lang.String getMnemonic(Settings settings)
Description copied from interface:DataType
Get the mnemonic for this DataType.- Specified by:
getMnemonic
in interfaceDataType
- Overrides:
getMnemonic
in classAbstractDataType
- Parameters:
settings
- settings which may influence the result or null- Returns:
- the mnemonic for this DataType.
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getDefaultLabelPrefix
public java.lang.String getDefaultLabelPrefix()
Description copied from interface:DataType
Returns the appropriate string to use as the default label prefix in the absence of any data.- Specified by:
getDefaultLabelPrefix
in interfaceDataType
- Overrides:
getDefaultLabelPrefix
in classAbstractDataType
- Returns:
- the default label prefix or null if none specified.
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getDefaultAbbreviatedLabelPrefix
public java.lang.String getDefaultAbbreviatedLabelPrefix()
Description copied from interface:DataType
Returns the prefix to use for this datatype when an abbreviated prefix is desired.For example, some datatypes will built a large default label, at which is is more desirable to have a shortened prefix.
- Specified by:
getDefaultAbbreviatedLabelPrefix
in interfaceDataType
- Overrides:
getDefaultAbbreviatedLabelPrefix
in classAbstractDataType
- Returns:
- the prefix to use for this datatype when an abbreviated prefix is desired. May return null.
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getDescription
public java.lang.String getDescription()
Description copied from interface:DataType
Get a String briefly describing this DataType.- Specified by:
getDescription
in interfaceDataType
- Returns:
- a one-liner describing this DataType.
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getBuiltInSettingsDefinitions
protected SettingsDefinition[] getBuiltInSettingsDefinitions()
Description copied from class:BuiltIn
Gets a list of all the settingsDefinitions used by this datatype.- Overrides:
getBuiltInSettingsDefinitions
in classBuiltIn
- Returns:
- a list of the settingsDefinitions used by this datatype.
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getStringDataInstance
public StringDataInstance getStringDataInstance(MemBuffer buf, Settings settings, int length)
Creates a newStringDataInstance
using the bytes in the supplied MemBuffer and options provided by this DataType.- Parameters:
buf
- the data.settings
- the settings to use for the representation.length
- the number of bytes to represent.- Returns:
- a new
StringDataInstance
, never null.
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getStringLayout
public StringLayoutEnum getStringLayout()
- Returns:
StringLayoutEnum
settinEnum stringLayoutype.
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getCharsetName
public java.lang.String getCharsetName(Settings settings)
Description copied from interface:DataTypeWithCharset
Get the character set for a specific data type and settings- Specified by:
getCharsetName
in interfaceDataTypeWithCharset
- Parameters:
settings
- data instance settings- Returns:
- Charset for this datatype and settings
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getLength
public int getLength()
Description copied from interface:DataType
Get the length (number of 8-bit bytes) of this DataType.NOTE: No datatype should ever return 0, even if
DataType.isZeroLength()
, and onlyDynamic
datatypes should return -1. IfDataType.isZeroLength()
is true a length of 1 should be returned. Where a zero-length datatype can be handled (e.g.,Composite
) theDataType.isZeroLength()
method should be used.
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canSpecifyLength
public boolean canSpecifyLength()
Description copied from interface:Dynamic
Determine if the length may be specified for an instanceof this datatype (e.g.,Data
,Array
,DataTypeComponent
, etc.).- Specified by:
canSpecifyLength
in interfaceDynamic
- Returns:
- true if a user-specified length can be used, else false
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getLength
public int getLength(MemBuffer buf, int maxLength)
Description copied from interface:Dynamic
Compute the length for this data-type which corresponds to the specified memory location.- Specified by:
getLength
in interfaceDynamic
- Parameters:
buf
- memory locationmaxLength
- maximum number of bytes to consume in computing length, or -1 for unspecified.- Returns:
- data length or -1 if it could not be determined. Returned length may exceed maxLength if data-type does not supported constrained lengths.
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getValueClass
public java.lang.Class<?> getValueClass(Settings settings)
Description copied from interface:DataType
Get the Class of the value to be returned by this datatype.- Specified by:
getValueClass
in interfaceDataType
- Overrides:
getValueClass
in classDataTypeImpl
- Parameters:
settings
- the relevant settings to use or null for default.- Returns:
- Class of the value to be returned by this datatype or null if it can vary or is unspecified. Types which correspond to a string or char array will return the String class.
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isEncodable
public boolean isEncodable()
Description copied from interface:DataType
Check if this type supports encoding (patching)If unsupported,
DataType.encodeValue(Object, MemBuffer, Settings, int)
andDataType.encodeRepresentation(String, MemBuffer, Settings, int)
will always throw an exception. Actions which rely on eitherencode
method should not be displayed if the applicable datatype is not encodable.- Specified by:
isEncodable
in interfaceDataType
- Overrides:
isEncodable
in classAbstractDataType
- Returns:
- true if encoding is supported
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getValue
public java.lang.Object getValue(MemBuffer buf, Settings settings, int length)
Description copied from interface:DataType
Get the data in the form of the appropriate Object for this DataType.For instance if the datatype is an AddressDT, return an Address object. a Byte, return a Scalar* (maybe this should be a Byte) a Float, return a Float
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encodeValue
public byte[] encodeValue(java.lang.Object value, MemBuffer buf, Settings settings, int length) throws DataTypeEncodeException
Description copied from interface:DataType
Encode bytes from an Object appropriate for this DataType.Converts the given object to the byte encoding and returns it. When appropriate, this should seek the nearest encoding to the specified value, since the object may come from a user script. For example, a floating-point value may be rounded. Invalid values should be rejected with a
DataTypeEncodeException
.- Specified by:
encodeValue
in interfaceDataType
- Overrides:
encodeValue
in classAbstractDataType
- Parameters:
value
- the desired value.buf
- a buffer representing the eventual destination of the bytes.settings
- the settings to use.length
- the expected length of the result, usually the length of the data unit, or -1 to let the type choose the length. It may be ignored, e.g., for fixed-length types.- Returns:
- the encoded value.
- Throws:
DataTypeEncodeException
- if the value cannot be encoded for any reason, e.g., incorrect type, not enough space, buffer overflow, unsupported (seeDataType.isEncodable()
).
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getRepresentation
public java.lang.String getRepresentation(MemBuffer buf, Settings settings, int length)
Description copied from interface:DataType
Get bytes from memory in a printable format for this type.- Specified by:
getRepresentation
in interfaceDataType
- Parameters:
buf
- the data.settings
- the settings to use for the representation.length
- the number of bytes to represent.- Returns:
- the representation of the data in this format, never null.
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encodeRepresentation
public byte[] encodeRepresentation(java.lang.String repr, MemBuffer buf, Settings settings, int length) throws DataTypeEncodeException
Description copied from interface:DataType
Encode bytes according to the display format for this type.Converts the given representation to the byte encoding and returns it. When appropriate, this should seek the nearest encoding to the specified value, since the representation is likely coming from user input. For example, a floating-point value may be rounded. Invalid representations should be rejected with a
DataTypeEncodeException
.- Specified by:
encodeRepresentation
in interfaceDataType
- Overrides:
encodeRepresentation
in classAbstractDataType
- Parameters:
repr
- the representation of the desired value, as inDataType.getRepresentation(MemBuffer, Settings, int)
. The supported formats depend on the specific datatype and its settings.buf
- a buffer representing the eventual destination of the bytes.settings
- the settings to use for the representation.length
- the expected length of the result, usually the length of the data unit, or -1 to let the type choose the length. It may be ignored, e.g., for fixed-length types.- Returns:
- the encoded value.
- Throws:
DataTypeEncodeException
- if the value cannot be encoded for any reason, e.g., incorrect format, not enough space, buffer overflow, unsupported (seeDataType.isEncodable()
).
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getDefaultLabelPrefix
public java.lang.String getDefaultLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options)
Description copied from interface:DataType
Returns the appropriate string to use as the default label prefix.- Specified by:
getDefaultLabelPrefix
in interfaceDataType
- Overrides:
getDefaultLabelPrefix
in classAbstractDataType
- Parameters:
buf
- memory buffer containing the bytes.settings
- the Settings objectlen
- the length of the data.options
- options for how to format the default label prefix.- Returns:
- the default label prefix or null if none specified.
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getDefaultOffcutLabelPrefix
public java.lang.String getDefaultOffcutLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options, int offcutLength)
Description copied from interface:DataType
Returns the appropriate string to use as the default label prefix.This takes into account the fact that there exists a reference to the data that references
offcutLength
bytes into this type- Specified by:
getDefaultOffcutLabelPrefix
in interfaceDataType
- Overrides:
getDefaultOffcutLabelPrefix
in classAbstractDataType
- Parameters:
buf
- memory buffer containing the bytes.settings
- the Settings objectlen
- the length of the data.options
- options for how to format the default label prefix.offcutLength
- offset into datatype- Returns:
- the default label prefix.
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getReplacementBaseType
public DataType getReplacementBaseType()
Description copied from interface:Dynamic
Returns a suitable replacement base data-type for pointers and arrays when exporting to C code- Specified by:
getReplacementBaseType
in interfaceDynamic
- Returns:
- suitable base data-type for this Dynamic data-type
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