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/*
SRMM
Copyright 2000-2005 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
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; either version 2
of the License, or (at your option) any later version.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "commonheaders.h"
static unsigned long tcmdlist_hash(const CMDCHAR *data) {
unsigned long hash = 0;
int i, shift = 0;
for(i=0; data[i]; i++) {
hash ^= data[i]<<shift;
if(shift>24) hash ^= (data[i]>>(32-shift))&0x7F;
shift = (shift+5)&0x1F;
}
return hash;
}
TCmdList *tcmdlist_append(TCmdList *list, CMDCHAR *data) {
TCmdList *n;
TCmdList *new_list = malloc(sizeof(TCmdList));
TCmdList *attach_to = NULL;
if (!data) {
free(new_list);
return list;
}
new_list->next = NULL;
#ifdef _UNICODE
new_list->szCmd = _tcsdup(data);
#else
new_list->szCmd = _strdup(data);
#endif
new_list->hash = tcmdlist_hash(data);
for (n=list; n!=NULL; n=n->next) {
attach_to = n;
}
if (attach_to==NULL) {
new_list->prev = NULL;
return new_list;
}
else {
new_list->prev = attach_to;
attach_to->next = new_list;
if (tcmdlist_len(list)>20) {
list = tcmdlist_remove(list, list->szCmd);
}
return list;
}
}
TCmdList *tcmdlist_remove(TCmdList *list, CMDCHAR *data) {
TCmdList *n;
unsigned long hash;
if (!data) return list;
hash = tcmdlist_hash(data);
for (n=list; n!=NULL; n=n->next) {
#ifdef _UNICODE
if (n->hash==hash&&!_tcscmp(n->szCmd, data)) {
#else
if (n->hash==hash&&!strcmp(n->szCmd, data)) {
#endif
if (n->next) n->next->prev = n->prev;
if (n->prev) n->prev->next = n->next;
if (n==list) list = n->next;
free(n->szCmd);
free(n);
return list;
}
}
return list;
}
int tcmdlist_len(TCmdList *list) {
TCmdList *n;
int i = 0;
for (n=list; n!=NULL; n=n->next) {
i++;
}
return i;
}
TCmdList *tcmdlist_last(TCmdList *list) {
TCmdList *n;
for (n=list; n!=NULL; n=n->next) {
if (!n->next)
return n;
}
return NULL;
}
void tcmdlist_free(TCmdList *list) {
TCmdList *n = list, *next;
while (n!=NULL) {
next = n->next;
free(n->szCmd);
free(n);
n = next;
}
}
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