Annotation of src/usr.bin/sort/sort.h, Revision 1.1
1.1 ! millert 1: /* $OpenBSD$ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to Berkeley by
! 8: * Peter McIlroy.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by the University of
! 21: * California, Berkeley and its contributors.
! 22: * 4. Neither the name of the University nor the names of its contributors
! 23: * may be used to endorse or promote products derived from this software
! 24: * without specific prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: *
! 38: * @(#)sort.h 8.1 (Berkeley) 6/6/93
! 39: */
! 40:
! 41: #include <sys/param.h>
! 42:
! 43: #include <db.h>
! 44: #include <err.h>
! 45: #include <errno.h>
! 46: #include <fcntl.h>
! 47: #include <limits.h>
! 48: #include <stdio.h>
! 49: #include <stdlib.h>
! 50:
! 51: #define NBINS 256
! 52: #define MAXMERGE 16
! 53:
! 54: /* values for masks, weights, and other flags. */
! 55: #define I 1 /* mask out non-printable characters */
! 56: #define D 2 /* sort alphanumeric characters only */
! 57: #define N 4 /* Field is a number */
! 58: #define F 8 /* weight lower and upper case the same */
! 59: #define R 16 /* Field is reversed with respect to the global weight */
! 60: #define BI 32 /* ignore blanks in icol */
! 61: #define BT 64 /* ignore blanks in tcol */
! 62:
! 63: /* masks for delimiters: blanks, fields, and termination. */
! 64: #define BLANK 1 /* ' ', '\t'; '\n' if -T is invoked */
! 65: #define FLD_D 2 /* ' ', '\t' default; from -t otherwise */
! 66: #define REC_D_F 4 /* '\n' default; from -T otherwise */
! 67:
! 68: #define ND 10 /* limit on number of -k options. */
! 69:
! 70: #define min(a, b) ((a) < (b) ? (a) : (b))
! 71: #define max(a, b) ((a) > (b) ? (a) : (b))
! 72:
! 73: #define FCLOSE(file) { \
! 74: if (EOF == fclose(file)) \
! 75: err(2, "fclose"); \
! 76: }
! 77:
! 78: #define EWRITE(ptr, size, n, f) { \
! 79: if (!fwrite(ptr, size, n, f)) \
! 80: err(2, NULL); \
! 81: }
! 82:
! 83: /* length of record is currently limited to 2^16 - 1 */
! 84: typedef u_short length_t;
! 85:
! 86: #define SALIGN(n) ((n+1) & ~1)
! 87:
! 88: /* a record is a key/line pair starting at rec.data. It has a total length
! 89: * and an offset to the start of the line half of the pair.
! 90: */
! 91: typedef struct recheader {
! 92: length_t length;
! 93: length_t offset;
! 94: u_char data[1];
! 95: } RECHEADER;
! 96:
! 97: typedef struct trecheader {
! 98: length_t length;
! 99: length_t offset;
! 100: } TRECHEADER;
! 101:
! 102: /* This is the column as seen by struct field. It is used by enterfield.
! 103: * They are matched with corresponding coldescs during initialization.
! 104: */
! 105: struct column {
! 106: struct coldesc *p;
! 107: int num;
! 108: int indent;
! 109: };
! 110:
! 111: /* a coldesc has a number and pointers to the beginning and end of the
! 112: * corresponding column in the current line. This is determined in enterkey.
! 113: */
! 114: typedef struct coldesc {
! 115: u_char *start;
! 116: u_char *end;
! 117: int num;
! 118: } COLDESC;
! 119:
! 120: /* A field has an initial and final column; an omitted final column
! 121: * implies the end of the line. Flags regulate omission of blanks and
! 122: * numerical sorts; mask determines which characters are ignored (from -i, -d);
! 123: * weights determines the sort weights of a character (from -f, -r).
! 124: */
! 125: struct field {
! 126: struct column icol;
! 127: struct column tcol;
! 128: u_int flags;
! 129: u_char *mask;
! 130: u_char *weights;
! 131: };
! 132:
! 133: union f_handle {
! 134: int top;
! 135: char **names;
! 136: };
! 137: extern int PANIC; /* maximum depth of fsort before fmerge is called */
! 138: extern u_char ascii[NBINS], Rascii[NBINS], Ftable[NBINS], RFtable[NBINS];
! 139: extern u_char alltable[NBINS], dtable[NBINS], itable[NBINS];
! 140: extern u_char d_mask[NBINS];
! 141: extern int SINGL_FLD, SEP_FLAG, UNIQUE;
! 142: extern int REC_D;
! 143: extern char *tmpdir;
! 144:
! 145: #include "extern.h"
![[BACK]](/icons/back.gif){kind=icon}
Return to sort.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / sort