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 function appends data to the existing value of a nsACString instance. This is a low-level API.NS_CStringCloneData function returns a null-terminated, heap allocated copy of the string's internal buffer.NS_CStringContainerFinish function releases any memory allocated by a nsCStringContainer instance.NS_CStringContainerInit function initializes a nsCStringContainer instance for use as a nsACString.NS_CStringContainerInit2 function initializes a nsCStringContainer instance for use as a nsACString.NS_CStringCopy function copies the value from one nsACString instance to another. This is a low-level API.NS_CStringCutData function removes a section of the string's internal buffer. This is a low-level API.NS_CStringGetData function gives the caller read access to the string's internal buffer.NS_CStringGetMutableData function gives the caller write access to the string's internal buffer.NS_CStringInsertData function appends data to the existing value of a nsACString instance. This is a low-level API.NS_CStringSetData function copies data into the string's internal buffer. This is a low-level API.NS_CStringSetDataRange function copies data into a section of the string's internal buffer. This is a low-level API.NS_CStringToUTF16 function converts the value of a nsACString instance to UTF-16 and stores the result in a nsAString instance.NS_StringAppendData function appends data to the existing value of a nsAString instance. This is a low-level API.NS_StringCloneData function returns a null-terminated, heap allocated copy of the string's internal buffer.NS_StringContainerFinish function releases any memory allocated by a nsStringContainer instance. This is a low-level API.NS_StringContainerInit function initializes a nsStringContainer instance for use as a nsAString. This is a low-level API.NS_StringCopy function copies the value from one nsAString instance to another. This is a low-level API.NS_StringCutData function removes a section of the string's internal buffer. This is a low-level API.NS_StringGetData function gives the caller access to the string's internal buffer. This is a low-level API.NS_StringInsertData function appends data to the existing value of a nsACString instance. This is a low-level API.NS_StringSetData function copies data into the string's internal buffer. This is a low-level API.NS_StringSetDataRange function copies data into a section of the string's internal buffer. This is a low-level API.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.