201 lines
7.5 KiB
C
201 lines
7.5 KiB
C
/* $NetBSD: sort.h,v 1.32 2010/06/05 17:44:51 dholland Exp $ */
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/*-
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* Copyright (c) 2000-2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Ben Harris and Jaromir Dolecek.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Peter McIlroy.
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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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)sort.h 8.1 (Berkeley) 6/6/93
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*/
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#include <sys/param.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define NBINS 256
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/* values for masks, weights, and other flags. */
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/* R and F get used to index weight_tables[] */
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#define R 1 /* Field is reversed */
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#define F 2 /* weight lower and upper case the same */
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#define I 4 /* mask out non-printable characters */
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#define D 8 /* sort alphanumeric characters only */
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#define N 16 /* Field is a number */
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#define BI 32 /* ignore blanks in icol */
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#define BT 64 /* ignore blanks in tcol */
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/* masks for delimiters: blanks, fields, and termination. */
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#define BLANK 1 /* ' ', '\t'; '\n' if -R is invoked */
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#define FLD_D 2 /* ' ', '\t' default; from -t otherwise */
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#define REC_D_F 4 /* '\n' default; from -R otherwise */
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#define FCLOSE(file) { \
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if (EOF == fclose(file)) \
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err(2, "%p", file); \
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}
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#define EWRITE(ptr, size, n, f) { \
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if (!fwrite(ptr, size, n, f)) \
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err(2, NULL); \
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}
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/* Records are limited to MAXBUFSIZE (8MB) and less if you want to sort
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* in a sane way.
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* Anyone who wants to sort data records longer than 2GB definitely needs a
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* different program! */
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typedef unsigned int length_t;
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/* A record is a key/line pair starting at rec.data. It has a total length
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* and an offset to the start of the line half of the pair.
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*/
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typedef struct recheader {
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length_t length; /* total length of key and line */
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length_t offset; /* to line */
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int keylen; /* length of key */
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u_char data[]; /* key then line */
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} RECHEADER;
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/* This is the column as seen by struct field. It is used by enterfield.
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* They are matched with corresponding coldescs during initialization.
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*/
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struct column {
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struct coldesc *p;
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int num;
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int indent;
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};
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/* a coldesc has a number and pointers to the beginning and end of the
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* corresponding column in the current line. This is determined in enterkey.
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*/
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typedef struct coldesc {
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u_char *start;
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u_char *end;
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int num;
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} COLDESC;
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/* A field has an initial and final column; an omitted final column
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* implies the end of the line. Flags regulate omission of blanks and
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* numerical sorts; mask determines which characters are ignored (from -i, -d);
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* weights determines the sort weights of a character (from -f, -r).
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*
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* The first field contain the global flags etc.
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* The list terminates when icol = 0.
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*/
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struct field {
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struct column icol;
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struct column tcol;
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u_int flags;
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u_char *mask;
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u_char *weights;
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};
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struct filelist {
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const char * const * names;
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};
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typedef int (*get_func_t)(FILE *, RECHEADER *, u_char *, struct field *);
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typedef void (*put_func_t)(const RECHEADER *, FILE *);
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extern u_char ascii[NBINS], Rascii[NBINS], Ftable[NBINS], RFtable[NBINS];
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extern u_char *const weight_tables[4]; /* ascii, Rascii, Ftable, RFtable */
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extern u_char d_mask[NBINS];
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extern int SINGL_FLD, SEP_FLAG, UNIQUE, REVERSE;
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extern int posix_sort;
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extern int REC_D;
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extern const char *tmpdir;
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extern struct coldesc *clist;
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extern int ncols;
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#define DEBUG(ch) (debug_flags & (1 << ((ch) & 31)))
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extern unsigned int debug_flags;
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RECHEADER *allocrec(RECHEADER *, size_t);
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void append(RECHEADER **, int, FILE *, void (*)(const RECHEADER *, FILE *));
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void concat(FILE *, FILE *);
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length_t enterkey(RECHEADER *, const u_char *, u_char *, size_t, struct field *);
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void fixit(int *, char **, const char *);
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void fldreset(struct field *);
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FILE *ftmp(void);
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void fmerge(struct filelist *, int, FILE *, struct field *);
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void save_for_merge(FILE *, get_func_t, struct field *);
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void merge_sort(FILE *, put_func_t, struct field *);
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void fsort(struct filelist *, int, FILE *, struct field *);
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int geteasy(FILE *, RECHEADER *, u_char *, struct field *);
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int makekey(FILE *, RECHEADER *, u_char *, struct field *);
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int makeline(FILE *, RECHEADER *, u_char *, struct field *);
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void makeline_copydown(RECHEADER *);
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int optval(int, int);
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void order(struct filelist *, struct field *);
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void putline(const RECHEADER *, FILE *);
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void putrec(const RECHEADER *, FILE *);
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void putkeydump(const RECHEADER *, FILE *);
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void rd_append(int, int, int, FILE *, u_char *, u_char *);
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void radix_sort(RECHEADER **, RECHEADER **, int);
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int setfield(const char *, struct field *, int);
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void settables(void);
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