gd_put_carray_slice man page

gd_put_carray, gd_put_carray_slice, gd_put_constant — write CONST or CARRAY data to a dirfile database

Synopsis

#include <getdata.h>

int gd_put_carray_slice(DIRFILE *dirfile, const char *field_code, unsigned int start, size_t len, gd_type_t data_type, const void *data_in);

int gd_put_carray(DIRFILE *dirfile, const char *field_code, gd_type_t data_type, const void *data_in);

int gd_put_constant(DIRFILE *dirfile, const char *field_code, gd_type_t data_type, const void *data_in);

Description

The gd_put_carray_slice() function writes data to a dirfile(5) database specified by dirfile into the CARRAY scalar array field_code. The data in the field is converted from the data type specified by data_type, and read from in the user-supplied buffer data_in. The location of the first element of the field into which data is stored is given by start, and the number of elements stored is given by len.

The gd_put_carray() function behaves similarly, except the whole scalar array is written, as if gd_put_carray_slice() were called with start equal zero and len equal to the value returned by gd_carray_len(3). The gd_put_constant() function is equivalent to calling gd_put_carray_slice() with start equal to zero and len equal to one. None of these interfaces can write to field representations.

The argument data_in must point to a valid memory location containing all the data to be written. The number of elements which will be stored by gd_put_carray() may be obtained by calling gd_carray_len(3). Unlike gd_putdata(3), writing data past the end of the field is not permitted. To add data to a CARRAY, first increase its length by calling gd_alter_carray(3), or another equivalent function.

The data_type argument should be one of the following symbols, which indicates the type of the data pointed to by data_in:

GD_UINT8
unsigned 8-bit integer
GD_INT8
signed (two's complement) 8-bit integer
GD_UINT16
unsigned 16-bit integer
GD_INT16
signed (two's complement) 16-bit integer
GD_UINT32
unsigned 32-bit integer
GD_INT32
signed (two's complement) 32-bit integer
GD_UINT64
unsigned 64-bit integer
GD_INT64
signed (two's complement) 64-bit integer
GD_FLOAT32
IEEE-754 standard 32-bit single precision floating point number
GD_FLOAT64
IEEE-754 standard 64-bit double precision floating point number
GD_COMPLEX64
C99-conformant 64-bit single precision complex number
GD_COMPLEX128
C99-conformant 128-bit double precision complex number

The type of the input data need not be the same as the storage type of the field. Type conversion will be performed as necessary to return the requested type. The dirfile argument must point to a valid DIRFILE object previously created by a call to gd_open(3).

Return Value

On success, gd_put_carray(), gd_put_carray_slice() and gd_put_constant() return zero. On error, they return -1 and set the dirfile error to a non-zero value. Possible error values are:

GD_E_ACCMODE
The specified dirfile was opened read-only.
GD_E_ALLOC
The library was unable to allocate memory.
GD_E_BAD_CODE
The field specified by field_code was not found in the database.
GD_E_BAD_DIRFILE
An invalid dirfile was supplied.
GD_E_BAD_FIELD_TYPE
The supplied field_code was not a CONST nor a CARRAY. The caller should use gd_putdata(3), gd_put_constant(3), or gd_put_string(3) instead.
GD_E_BAD_TYPE
An invalid data_type was specified.
GD_E_BOUNDS
A request for data beyond the end of the field was made.
GD_E_INTERNAL_ERROR
An internal error occurred in the library while trying to perform the task. This indicates a bug in the library. Please report the incident to the maintainer.
GD_E_PROTECTED
The fragment containing the constant was protected from change.

The dirfile error may be retrieved by calling gd_error(3). A descriptive error string for the last error encountered may be obtained from a call to gd_error_string(3).

See Also

dirfile(5), gd_carray_len(3), gd_carrays(3), gd_error(3), gd_error_string(3), gd_get_carray_slice(3), gd_open(3), gd_put_constant(3)

Referenced By

gd_alter_bit(3), gd_alter_entry(3), gd_get_carray_slice(3), gd_putdata(3), gd_put_string(3).

4 July 2012 Version 0.8.0 GETDATA