Struct proj_sys::PROJ_FILE_API

#[repr(C)]
pub struct PROJ_FILE_API {
    pub version: c_int,
    pub open_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, access: PROJ_OPEN_ACCESS, user_data: *mut c_void) -> *mut PROJ_FILE_HANDLE>,
    pub read_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, buffer: *mut c_void, sizeBytes: usize, user_data: *mut c_void) -> usize>,
    pub write_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, buffer: *const c_void, sizeBytes: usize, user_data: *mut c_void) -> usize>,
    pub seek_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, offset: c_longlong, whence: c_int, user_data: *mut c_void) -> c_int>,
    pub tell_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, user_data: *mut c_void) -> c_ulonglong>,
    pub close_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, user_data: *mut c_void)>,
    pub exists_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>,
    pub mkdir_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>,
    pub unlink_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>,
    pub rename_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, oldPath: *const c_char, newPath: *const c_char, user_data: *mut c_void) -> c_int>,
}

File API callbacks

Fields

version: c_int

Version of this structure. Should be set to 1 currently.

open_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, access: PROJ_OPEN_ACCESS, user_data: *mut c_void) -> *mut PROJ_FILE_HANDLE>

Open file. Return NULL if error

read_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, buffer: *mut c_void, sizeBytes: usize, user_data: *mut c_void) -> usize>

Read sizeBytes into buffer from current position and return number of bytes read

write_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, buffer: *const c_void, sizeBytes: usize, user_data: *mut c_void) -> usize>

Write sizeBytes into buffer from current position and return number of bytes written

seek_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, offset: c_longlong, whence: c_int, user_data: *mut c_void) -> c_int>

Seek to offset using whence=SEEK_SET/SEEK_CUR/SEEK_END. Return TRUE in case of success

tell_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, user_data: *mut c_void) -> c_ulonglong>

Return current file position

close_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, arg1: *mut PROJ_FILE_HANDLE, user_data: *mut c_void)>

Close file

exists_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>

Return TRUE if a file exists

mkdir_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>

Return TRUE if directory exists or could be created

unlink_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, filename: *const c_char, user_data: *mut c_void) -> c_int>

Return TRUE if file could be removed

rename_cbk: Option<unsafe extern "C" fn(ctx: *mut PJ_CONTEXT, oldPath: *const c_char, newPath: *const c_char, user_data: *mut c_void) -> c_int>

Return TRUE if file could be renamed

Trait Implementations

impl Clone for PROJ_FILE_API

fn clone(&self) -> PROJ_FILE_API

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PROJ_FILE_API

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for PROJ_FILE_API