7137597e15
Observe: printf "a\nb\nc\n" > /tmp/foo # Next command results in no output cat /tmp/foo | sort -m # Next command results in proper output cat /tmp/foo | sort -m - # Also works: sort -m /tmp/foo Some const'ification was done to simplify the actual solution of adding "-" explicitly to the file list if we didn't have any file arguments left over. PR: 190099 MFC after: 1 week
129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/* $FreeBSD$ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
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* Copyright (C) 2012 Oleg Moskalenko <mom040267@gmail.com>
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* All rights reserved.
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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
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if !defined(__SORT_FILE_H__)
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#define __SORT_FILE_H__
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#include "coll.h"
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#include "sort.h"
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#define SORT_DEFAULT 0
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#define SORT_QSORT 1
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#define SORT_MERGESORT 2
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#define SORT_HEAPSORT 3
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#define SORT_RADIXSORT 4
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#define DEFAULT_SORT_ALGORITHM SORT_HEAPSORT
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#define DEFAULT_SORT_FUNC heapsort
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/*
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* List of data to be sorted.
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*/
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struct sort_list
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{
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struct sort_list_item **list;
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unsigned long long memsize;
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size_t count;
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size_t size;
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size_t sub_list_pos;
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};
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/*
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* File reader object
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*/
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struct file_reader;
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/*
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* List of files to be sorted
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*/
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struct file_list
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{
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const char * *fns;
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size_t count;
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size_t sz;
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bool tmp;
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};
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/* memory */
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/**/
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extern unsigned long long free_memory;
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extern unsigned long long available_free_memory;
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/* Are we using mmap ? */
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extern bool use_mmap;
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/* temporary file dir */
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extern const char *tmpdir;
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/*
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* Max number of simultaneously open files (including the output file).
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*/
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extern size_t max_open_files;
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/*
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* Compress program
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*/
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extern const char* compress_program;
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/* funcs */
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struct file_reader *file_reader_init(const char *fsrc);
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struct bwstring *file_reader_readline(struct file_reader *fr);
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void file_reader_free(struct file_reader *fr);
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void init_tmp_files(void);
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void clear_tmp_files(void);
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char *new_tmp_file_name(void);
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void tmp_file_atexit(const char *tmp_file);
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void file_list_init(struct file_list *fl, bool tmp);
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void file_list_add(struct file_list *fl, const char *fn, bool allocate);
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void file_list_populate(struct file_list *fl, int argc, char **argv, bool allocate);
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void file_list_clean(struct file_list *fl);
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int check(const char *);
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void merge_files(struct file_list *fl, const char *fn_out);
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FILE *openfile(const char *, const char *);
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void closefile(FILE *, const char *);
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int procfile(const char *fn, struct sort_list *list, struct file_list *fl);
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void sort_list_init(struct sort_list *l);
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void sort_list_add(struct sort_list *l, struct bwstring *str);
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void sort_list_clean(struct sort_list *l);
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void sort_list_dump(struct sort_list *l, const char *fn);
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void sort_list_to_file(struct sort_list *list, const char *outfile);
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#endif /* __SORT_FILE_H__ */
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