/* vifm
* Copyright (C) 2013 xaizek.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "hist.h"
#include <stddef.h> /* NULL */
#include <stdlib.h> /* calloc() free() */
#include <string.h> /* memmove() */
#include <time.h> /* time_t */
#include "../compat/reallocarray.h"
#include "macros.h"
static int move_to_first_position(hist_t *hist, const char item[],
time_t timestamp);
static int insert_at_first_position(hist_t *hist, const char item[],
time_t timestamp);
int
hist_init(hist_t *hist, int capacity)
{
if(capacity < 0)
{
capacity = 0;
}
hist->size = 0;
hist->capacity = 0;
hist->items = calloc(capacity, sizeof(*hist->items));
if(hist->items == NULL)
{
return 1;
}
hist->capacity = capacity;
return 0;
}
void
hist_reset(hist_t *hist)
{
int i;
for(i = 0; i < hist->size; ++i)
{
free(hist->items[i].text);
}
free(hist->items);
hist->items = NULL;
hist->size = 0;
hist->capacity = 0;
}
int
hist_is_empty(const hist_t *hist)
{
return (hist->size == 0);
}
void
hist_resize(hist_t *hist, int new_capacity)
{
if(new_capacity <= 0)
{
hist_reset(hist);
return;
}
/* Free truncated elements, if any. */
int i;
for(i = new_capacity; i < hist->size; ++i)
{
free(hist->items[i].text);
}
hist->items = reallocarray(hist->items, new_capacity, sizeof(*hist->items));
hist->size = MIN(hist->size, new_capacity);
hist->capacity = new_capacity;
}
int
hist_add(hist_t *hist, const char item[], time_t timestamp)
{
if(hist->capacity > 0 && item[0] != '\0')
{
if(move_to_first_position(hist, item, timestamp) != 0)
{
return insert_at_first_position(hist, item, timestamp);
}
}
return 0;
}
/* Moves item to the first position. Returns zero on success or non-zero when
* item wasn't found in the history. */
static int
move_to_first_position(hist_t *hist, const char item[], time_t timestamp)
{
if(hist->size > 0 && strcmp(hist->items[0].text, item) == 0)
{
return 0;
}
int i;
for(i = 1; i < hist->size; ++i)
{
if(strcmp(hist->items[i].text, item) == 0)
{
hist_item_t item = hist->items[i];
item.timestamp = timestamp;
memmove(hist->items + 1, hist->items, sizeof(*hist->items)*i);
hist->items[0] = item;
return 0;
}
}
return 1;
}
/* Inserts item at the first position. Returns zero on success or non-zero on
* failure. */
static int
insert_at_first_position(hist_t *hist, const char item[], time_t timestamp)
{
char *const item_copy = strdup(item);
if(item_copy == NULL)
{
return 1;
}
if(hist->size == hist->capacity)
{
free(hist->items[hist->size - 1].text);
}
else
{
++hist->size;
}
memmove(hist->items + 1, hist->items,
sizeof(*hist->items)*(hist->size - 1));
hist->items[0].text = item_copy;
hist->items[0].timestamp = timestamp;
return 0;
}
/* vim: set tabstop=2 softtabstop=2 shiftwidth=2 noexpandtab cinoptions-=(0 : */
/* vim: set cinoptions+=t0 filetype=c : */
Before first commit, do not forget to setup your git environment:
git config --global user.name "your_name_here"
git config --global user.email "your@email_here"
Clone this repository using HTTP(S):
git clone https://code.reversed.top/user/xaizek/vifm
Clone this repository using ssh (do not forget to upload a key first):
git clone ssh://rocketgit@code.reversed.top/user/xaizek/vifm
You are allowed to anonymously push to this repository.
This means that your pushed commits will automatically be transformed into a
pull request:
... clone the repository ...
... make some changes and some commits ...
git push origin master