XPCOM string functions 编辑

XPCOM provides these low-level string functions to let you work with strings; however, it's often better to use one of the string classes rather than directly using these functions.

NS_CStringAppendData

The NS_CStringAppendData function appends data to the existing value of a nsACString instance. This is a low-level API.

NS_CStringCloneData

The NS_CStringCloneData function returns a null-terminated, heap allocated copy of the string's internal buffer.

NS_CStringContainerFinish

The NS_CStringContainerFinish function releases any memory allocated by a nsCStringContainer instance.

NS_CStringContainerInit

The NS_CStringContainerInit function initializes a nsCStringContainer instance for use as a nsACString.

NS_CStringContainerInit2

The NS_CStringContainerInit2 function initializes a nsCStringContainer instance for use as a nsACString.

NS_CStringCopy

The NS_CStringCopy function copies the value from one nsACString instance to another. This is a low-level API.

NS_CStringCutData

The NS_CStringCutData function removes a section of the string's internal buffer. This is a low-level API.

NS_CStringGetData

The NS_CStringGetData function gives the caller read access to the string's internal buffer.

NS_CStringGetMutableData

The NS_CStringGetMutableData function gives the caller write access to the string's internal buffer.

NS_CStringInsertData

The NS_CStringInsertData function appends data to the existing value of a nsACString instance. This is a low-level API.

NS_CStringSetData

The NS_CStringSetData function copies data into the string's internal buffer. This is a low-level API.

NS_CStringSetDataRange

The NS_CStringSetDataRange function copies data into a section of the string's internal buffer. This is a low-level API.

NS_CStringToUTF16

The NS_CStringToUTF16 function converts the value of a nsACString instance to UTF-16 and stores the result in a nsAString instance.

NS_StringAppendData

The NS_StringAppendData function appends data to the existing value of a nsAString instance. This is a low-level API.

NS_StringCloneData

The NS_StringCloneData function returns a null-terminated, heap allocated copy of the string's internal buffer.

NS_StringContainerFinish

The NS_StringContainerFinish function releases any memory allocated by a nsStringContainer instance. This is a low-level API.

NS_StringContainerInit

The NS_StringContainerInit function initializes a nsStringContainer instance for use as a nsAString. This is a low-level API.

NS_StringCopy

The NS_StringCopy function copies the value from one nsAString instance to another. This is a low-level API.

NS_StringCutData

The NS_StringCutData function removes a section of the string's internal buffer. This is a low-level API.

NS_StringGetData

The NS_StringGetData function gives the caller access to the string's internal buffer. This is a low-level API.

NS_StringInsertData

The NS_StringInsertData function appends data to the existing value of a nsACString instance. This is a low-level API.

NS_StringSetData

The NS_StringSetData function copies data into the string's internal buffer. This is a low-level API.

NS_StringSetDataRange

The NS_StringSetDataRange function copies data into a section of the string's internal buffer. This is a low-level API.

NS_UTF16ToCString

The NS_UTF16ToCString function converts the value of a nsAString instance from UTF-16 to the specified multi-byte encoding and stores the result in a nsACString instance.