Function
GLibvsnprintf
Declaration [src]
gint
g_vsnprintf (
gchar* string,
gulong n,
const gchar* format,
va_list args
)
Description [src]
A safer form of the standard vsprintf() function. The output is guaranteed
to not exceed n characters (including the terminating nul character), so
it is easy to ensure that a buffer overflow cannot occur.
See also g_strdup_vprintf().
In versions of GLib prior to 1.2.3, this function may return -1 if the output was truncated, and the truncated string may not be nul-terminated. In versions prior to 1.3.12, this function returns the length of the output string.
The return value of g_vsnprintf() conforms to the vsnprintf() function
as standardized in ISO C99. Note that this is different from traditional
vsnprintf(), which returns the length of the output string.
The format string may contain positional parameters, as specified in the Single Unix Specification.
This function is not directly available to language bindings.
Parameters
string-
Type:
gchar*The buffer to hold the output.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string. n-
Type:
gulongThe maximum number of bytes to produce (including the terminating nul character).
format-
Type:
const gchar*A standard
printf()format string, but notice string precision pitfalls.The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string. args-
Type:
va_listThe list of arguments to insert in the output.