XPCOM string functions

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.