/* Copyright (C) 2015-2020, Dirk Krause SPDX-License-Identifier: BSD-3-Clause */ /* WARNING: This file was generated by the dkct program (see http://dktools.sourceforge.net/ for details). 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 */ /** @file dk4dbitw.c The dk4dbitw module. */ #line 165 "dk4dbitw.ctr" #include "dk4conf.h" #include "dk4strw.h" #include "dk4dbitw.h" #include "dk4maasz.h" #line 175 "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; }