128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/**
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* @file NCDPlaceholderDb.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <misc/balloc.h>
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#include <misc/strdup.h>
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#include <base/BLog.h>
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#include <ncd/make_name_indices.h>
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#include "NCDPlaceholderDb.h"
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#include <generated/blog_channel_NCDPlaceholderDb.h>
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int NCDPlaceholderDb_Init (NCDPlaceholderDb *o, NCDStringIndex *string_index)
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{
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ASSERT(string_index)
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o->count = 0;
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o->capacity = 1;
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o->string_index = string_index;
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if (!(o->arr = BAllocArray(o->capacity, sizeof(o->arr[0])))) {
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BLog(BLOG_ERROR, "NCDPlaceholderDb_Init failed");
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return 0;
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}
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return 1;
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}
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void NCDPlaceholderDb_Free (NCDPlaceholderDb *o)
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{
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for (size_t i = 0; i < o->count; i++) {
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BFree(o->arr[i].varnames);
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}
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BFree(o->arr);
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}
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int NCDPlaceholderDb_AddVariable (NCDPlaceholderDb *o, const char *varname, int *out_plid)
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{
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ASSERT(varname)
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ASSERT(out_plid)
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ASSERT(o->count <= o->capacity)
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ASSERT(o->capacity > 0)
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if (o->count == o->capacity) {
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if (o->capacity > SIZE_MAX / 2) {
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BLog(BLOG_ERROR, "too many placeholder entries (cannot resize)");
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return 0;
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}
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size_t newcap = 2 * o->capacity;
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struct NCDPlaceholderDb__entry *newarr = BAllocArray(newcap, sizeof(newarr[0]));
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if (!newarr) {
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BLog(BLOG_ERROR, "BAllocArray failed");
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return 0;
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}
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memcpy(newarr, o->arr, o->count * sizeof(newarr[0]));
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BFree(o->arr);
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o->arr = newarr;
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o->capacity = newcap;
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}
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ASSERT(o->count < o->capacity)
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if (o->count > INT_MAX) {
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BLog(BLOG_ERROR, "too many placeholder entries (cannot fit integer)");
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return 0;
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}
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NCD_string_id_t *varnames;
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size_t num_names;
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if (!ncd_make_name_indices(o->string_index, varname, &varnames, &num_names)) {
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BLog(BLOG_ERROR, "ncd_make_name_indices failed");
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return 0;
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}
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*out_plid = o->count;
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o->arr[o->count].varnames = varnames;
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o->arr[o->count].num_names = num_names;
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o->count++;
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return 1;
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}
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void NCDPlaceholderDb_GetVariable (NCDPlaceholderDb *o, int plid, const NCD_string_id_t **out_varnames, size_t *out_num_names)
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{
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ASSERT(plid >= 0)
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ASSERT(plid < o->count)
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ASSERT(out_varnames)
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ASSERT(out_num_names)
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*out_varnames = o->arr[plid].varnames;
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*out_num_names = o->arr[plid].num_names;
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}
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