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sort.c
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sort.c
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/*
* SPDX-License-Identifier: ISC
* SPDX-URL: https://spdx.org/licenses/ISC.html
*
* Copyright (C) 2023 Aaron M. D. Jones <[email protected]>
*/
#include <stddef.h>
#include <string.h>
#include "filemap.h"
static int FM_NONNULL(1, 2)
fm_sortby_extoff_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->off < in2->off)
return -1;
if (in1->off > in2->off)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_extlen_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->len < in2->len)
return -1;
if (in1->len > in2->len)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_extcnt_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->inode->extcount < in2->inode->extcount)
return -1;
if (in1->inode->extcount > in2->inode->extcount)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_inofcnt_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->inode->namecount < in2->inode->namecount)
return -1;
if (in1->inode->namecount > in2->inode->namecount)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_inonum_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->inode->inum < in2->inode->inum)
return -1;
if (in1->inode->inum > in2->inode->inum)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_inofsz_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
if (in1->inode->sb.st_size < in2->inode->sb.st_size)
return -1;
if (in1->inode->sb.st_size > in2->inode->sb.st_size)
return 1;
return 0;
}
static int FM_NONNULL(1, 2)
fm_sortby_inofname_cb(const struct fm_extent *const restrict in1, const struct fm_extent *const restrict in2)
{
const int ret = strcmp(in1->inode->names->name, in2->inode->names->name);
if (ret < 0)
return -1;
if (ret > 0)
return 1;
return 0;
}
int FM_NONNULL(1, 2)
fm_sortby_extent_cb(const void *const restrict ptr1, const void *const restrict ptr2)
{
const struct fm_extent *const in1 = ptr1;
const struct fm_extent *const in2 = ptr2;
int ret;
switch (fm_sort_method)
{
case FM_SORTMETH_EXTENT_OFFSET:
{
ret = fm_sortby_extoff_cb(in1, in2);
break;
}
case FM_SORTMETH_EXTENT_LENGTH:
{
ret = fm_sortby_extlen_cb(in1, in2);
break;
}
case FM_SORTMETH_INODE_EXTENT_COUNT:
{
ret = fm_sortby_extcnt_cb(in1, in2);
break;
}
case FM_SORTMETH_INODE_LINK_COUNT:
{
ret = fm_sortby_inofcnt_cb(in1, in2);
break;
}
case FM_SORTMETH_INODE_NUMBER:
{
ret = fm_sortby_inonum_cb(in1, in2);
break;
}
case FM_SORTMETH_FILESIZE:
{
ret = fm_sortby_inofsz_cb(in1, in2);
break;
}
case FM_SORTMETH_FILENAME:
{
ret = fm_sortby_inofname_cb(in1, in2);
break;
}
}
switch (fm_sort_direction)
{
case FM_SORTDIR_ASCENDING:
{
return ret;
}
case FM_SORTDIR_DESCENDING:
{
if (ret < 0)
return 1;
if (ret > 0)
return -1;
return 0;
}
}
return 0;
}
int FM_NONNULL(1, 2)
fm_sortby_filename_cb(const struct fm_name *const restrict in1, const struct fm_name *const restrict in2)
{
const int ret = strcmp(in1->name, in2->name);
if (ret < 0)
return -1;
if (ret > 0)
return 1;
return 0;
}