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/* eurephia_values.c -- Generic interface for processing key->value pairs
*
* GPLv2 only - Copyright (C) 2008
* David Sommerseth <dazo@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <eurephia_nullsafe.h>
#include <eurephia_context.h>
#include <eurephia_log.h>
void do_free_vals(eurephiaVALUES *vls) {
if( vls->next != NULL ) {
do_free_vals(vls->next);
}
free_nullsafe(vls->key);
free_nullsafe(vls->val);
free_nullsafe(vls);
}
void eFree_values_func(eurephiaCTX *ctx, eurephiaVALUES *vls) {
DEBUG(ctx, 31, "Function call: eFree_values(ctx, vls(%i))",
(vls != NULL ? vls->evid : -1));
if( (vls == NULL) ) {
return;
}
do_free_vals(vls);
}
eurephiaVALUES *eGet_valuestruct(eurephiaVALUES *vls, const char *key)
{
eurephiaVALUES *ptr = NULL;
if( (vls == NULL) || (key == NULL) ) {
return NULL;
}
ptr = vls;
while( ptr != NULL ) {
if( (ptr->key != NULL) && (strcmp(key, ptr->key) == 0) ) {
return ptr;
}
ptr = ptr->next;
}
return NULL;
}
char *eGet_value(eurephiaVALUES *vls, const char *key)
{
eurephiaVALUES *ptr = NULL;
ptr = eGet_valuestruct(vls, key);
return (ptr != NULL ? ptr->val : NULL);
}
eurephiaVALUES *eCreate_value_space(eurephiaCTX *ctx, int evgid)
{
eurephiaVALUES *ptr = NULL;
DEBUG(ctx, 32, "Function call: eCreate_value_space(ctx, %i)", evgid);
ptr = (eurephiaVALUES *) malloc(sizeof(eurephiaVALUES) + 2);
if( ptr == NULL ) {
eurephia_log(ctx, LOG_PANIC, 0, "Could not allocate memory for a new eurephiaVALUE struct");
return NULL;
}
memset(ptr, 0, sizeof(eurephiaVALUES) + 2);
ptr->evgid = evgid;
return ptr;
}
void eAdd_valuestruct(eurephiaCTX *ctx, eurephiaVALUES *vls, eurephiaVALUES *newval) {
eurephiaVALUES *ptr = NULL;
int vid = 0;
DEBUG(ctx, 31, "Function call: eAdd_valuestruct(ctx, vls(%i), '%s', '%s')",
(vls != NULL ? vls->evgid : -1), newval->key, newval->val);
assert(vls != NULL);
if( (vls->key == NULL) && (vls->val == NULL) && (vls->next == NULL) && (vls->evid == 0)) {
// Update header record if it is empty, by copying newval record. Free newval afterwards
vls->key = strdup(newval->key);
vls->val = strdup(newval->val);
vls->evid = 0;
vls->next = NULL;
do_free_vals(newval);
} else {
// Add values to the value chain, loop to the end and append it
ptr = vls;
while( ptr->next != NULL ) {
ptr = ptr->next;
vid = (vid > ptr->evid ? vid : ptr->evid);
}
newval->evid = vid+1; // Increase the value counter
newval->evgid = ptr->evgid;
ptr->next = newval;
}
}
void eAdd_value(eurephiaCTX *ctx, eurephiaVALUES *vls, const char *key, const char *val)
{
eurephiaVALUES *ptr = NULL;
DEBUG(ctx, 31, "Function call: eAdd_value(ctx, vls(%i), '%s', '%s')",
(vls != NULL ? vls->evgid : -1), key, val);
assert(vls != NULL);
// Allocate buffer and save values
ptr = eCreate_value_space(ctx, vls->evid);
if( ptr == NULL ) {
eurephia_log(ctx, LOG_FATAL, 0, "Could not add the new value");
return;
}
ptr->key = strdup_nullsafe(key);
ptr->val = strdup_nullsafe(val);
ptr->evgid = vls->evgid;
// Add value struct to the chain
eAdd_valuestruct(ctx, vls, ptr);
}
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