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/*
WARNING: This file was generated by dkct.
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4dbitw.ctr
*/
/*
Copyright (C) 2015-2017, Dirk Krause
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @file dk4dbitw.c The dk4dbitw module.
*/
#line 153 "dk4dbitw.ctr"
#include "dk4conf.h"
#include "dk4strw.h"
#include "dk4dbitw.h"
#include "dk4maasz.h"
#line 163 "dk4dbitw.ctr"
/** Object for database traversal.
*/
typedef struct {
void *obj; /**< Object for string traversal. */
dk4dbi_wc_traverse_fct_t *fct; /**< String traversal function. */
} dk4dbi_wc_traversal_object_t;
int
dk4dbi_wc_del(
dk4_dbi_t *db,
const wchar_t *k,
dk4_er_t *erp
)
{
dk4_er_t er;
size_t ks = 0;
int back = 0;
if ((NULL != db) && (NULL != k)) {
dk4error_init(&er);
ks = dk4ma_size_t_mul(
sizeof(wchar_t),
dk4ma_size_t_add(1, dk4strw_len(k), &er),
&er
);
if (DK4_E_NONE == er.ec) {
back = dk4dbi_delete(db, k, ks, erp);
} else {
dk4error_copy(erp, &er);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
int
dk4dbi_wc_set(
dk4_dbi_t *db,
const wchar_t *k,
const wchar_t *v,
dk4_er_t *erp
)
{
dk4_er_t er;
size_t ks = 0;
size_t vs = 0;
int back = 0;
if ((NULL != db) && (NULL != k)) {
if (NULL != v) {
dk4error_init(&er);
ks = dk4ma_size_t_mul(
sizeof(wchar_t),
dk4ma_size_t_add(1, dk4strw_len(k), &er),
&er
);
vs = dk4ma_size_t_mul(
sizeof(wchar_t),
dk4ma_size_t_add(1, dk4strw_len(v), &er),
&er
);
if (DK4_E_NONE == er.ec) {
back = dk4dbi_set(db, k, ks, v, vs, erp);
} else {
dk4error_copy(erp, &er);
}
} else {
back = dk4dbi_wc_del(db, k, erp);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
int
dk4dbi_wc_get(
dk4_dbi_t *db,
const wchar_t *k,
wchar_t *vbuf,
size_t vsz,
dk4_er_t *erp
)
{
dk4_er_t er;
size_t ks = 0;
size_t ressz = 0;
int back = 0;
if ((NULL != vbuf) && (0 < vsz)) { *vbuf = L'\0'; }
if ((NULL != db) && (NULL != k) && (NULL != vbuf) && (0 < vsz)) {
dk4error_init(&er);
ressz = dk4ma_size_t_mul(sizeof(wchar_t), vsz, &er);
ks = dk4ma_size_t_mul(
sizeof(wchar_t),
dk4ma_size_t_add(1, dk4strw_len(k), &er),
&er
);
if (DK4_E_NONE == er.ec) {
if (0 != dk4dbi_get(db, k, ks, vbuf, &ressz, erp)) {
if (0 == (ressz % sizeof(wchar_t))) {
ressz = ressz / sizeof(wchar_t);
if (0 < ressz) {
if (L'\0' == vbuf[ressz - 1]) {
back = 1;
} else {
if (ressz < vsz) {
vbuf[ressz] = L'\0';
back = 1;
} else {
*vbuf = L'\0';
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
}
} else {
*vbuf = L'\0';
dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND);
}
} else {
*vbuf = L'\0';
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
}
} else {
dk4error_copy(erp, &er);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
/** Function to traverse a simple database.
The function must check the kb, ks, vb and vs arguments
for validity, they are passed as found by the backend
functions (this means pointers may be NULL, sizes may be 0).
@param Object modified during traversal, may be NULL.
@param kb Key data.
@param ks Key size.
@param vb Value data.
@param vs Value size.
@return 1 on success, 0 on error (can continue), -1 on error (abort).
*/
static
int
dk4dbi_wc_internal_traverse(
void *obj,
const void *kb,
size_t ks,
const void *vb,
size_t vs
)
{
dk4dbi_wc_traversal_object_t *myobj; /* Passed from dk4dbi_traverse() */
const wchar_t *pk; /* Key pointer */
const wchar_t *pv; /* Value pointer */
int back = 0;
if ((NULL != obj) && (NULL != kb) && (NULL != vb)) {
if ((0 == (ks % sizeof(wchar_t))) && (0 == (vs % sizeof(wchar_t)))) {
ks = ks / sizeof(wchar_t);
vs = vs / sizeof(wchar_t);
if ((0 < ks) && (0 < vs)) {
pk = (const wchar_t *)kb;
pv = (const wchar_t *)vb;
if (('\0' == pk[ks - 1]) && ('\0' == pv[vs - 1])) {
myobj = (dk4dbi_wc_traversal_object_t *)obj;
back = (*(myobj->fct))(myobj->obj, pk, pv);
}
}
}
}
return back;
}
int
dk4dbi_wc_traverse(
dk4_dbi_t *db,
void *obj,
dk4dbi_wc_traverse_fct_t *fct
)
{
dk4dbi_wc_traversal_object_t myobj; /* Passed to dk4dbi_traverse */
int back = -1;
if ((NULL != db) && (NULL != fct)) {
myobj.obj = obj;
myobj.fct = fct;
back = dk4dbi_traverse(db, &myobj, dk4dbi_wc_internal_traverse);
}
return back;
}
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