| fold.c (98342) | fold.c (102944) |
|---|---|
| 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Kevin Ruddy. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 33 unchanged lines hidden (view full) --- 42 43#ifndef lint 44#if 0 45static char sccsid[] = "@(#)fold.c 8.1 (Berkeley) 6/6/93"; 46#endif 47#endif /* not lint */ 48 49#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Kevin Ruddy. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 33 unchanged lines hidden (view full) --- 42 43#ifndef lint 44#if 0 45static char sccsid[] = "@(#)fold.c 8.1 (Berkeley) 6/6/93"; 46#endif 47#endif /* not lint */ 48 49#include <sys/cdefs.h> |
| 50__FBSDID("$FreeBSD: head/usr.bin/fold/fold.c 98342 2002-06-17 12:11:05Z tjr $"); | 50__FBSDID("$FreeBSD: head/usr.bin/fold/fold.c 102944 2002-09-04 23:29:10Z dwmalone $"); |
| 51 52#include <ctype.h> 53#include <err.h> 54#include <limits.h> 55#include <locale.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> --- 4 unchanged lines hidden (view full) --- 63void fold(int); 64static int newpos(int, int); 65static void usage(void); 66 67int bflag; /* Count bytes, not columns */ 68int sflag; /* Split on word boundaries */ 69 70int | 51 52#include <ctype.h> 53#include <err.h> 54#include <limits.h> 55#include <locale.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> --- 4 unchanged lines hidden (view full) --- 63void fold(int); 64static int newpos(int, int); 65static void usage(void); 66 67int bflag; /* Count bytes, not columns */ 68int sflag; /* Split on word boundaries */ 69 70int |
| 71main(argc, argv) 72 int argc; 73 char **argv; | 71main(int argc, char **argv) |
| 74{ | 72{ |
| 75 register int ch; | 73 int ch; |
| 76 int rval, width; 77 char *p; 78 79 (void) setlocale(LC_CTYPE, ""); 80 81 width = -1; 82 while ((ch = getopt(argc, argv, "0123456789bsw:")) != -1) 83 switch (ch) { --- 34 unchanged lines hidden (view full) --- 118 warn("%s", *argv); 119 rval = 1; 120 } else 121 fold(width); 122 exit(rval); 123} 124 125static void | 74 int rval, width; 75 char *p; 76 77 (void) setlocale(LC_CTYPE, ""); 78 79 width = -1; 80 while ((ch = getopt(argc, argv, "0123456789bsw:")) != -1) 81 switch (ch) { --- 34 unchanged lines hidden (view full) --- 116 warn("%s", *argv); 117 rval = 1; 118 } else 119 fold(width); 120 exit(rval); 121} 122 123static void |
| 126usage() | 124usage(void) |
| 127{ 128 (void)fprintf(stderr, "usage: fold [-bs] [-w width] [file ...]\n"); 129 exit(1); 130} 131 132/* 133 * Fold the contents of standard input to fit within WIDTH columns (or bytes) 134 * and write to standard output. 135 * 136 * If sflag is set, split the line at the last space character on the line. 137 * This flag necessitates storing the line in a buffer until the current 138 * column > width, or a newline or EOF is read. 139 * 140 * The buffer can grow larger than WIDTH due to backspaces and carriage 141 * returns embedded in the input stream. 142 */ 143void | 125{ 126 (void)fprintf(stderr, "usage: fold [-bs] [-w width] [file ...]\n"); 127 exit(1); 128} 129 130/* 131 * Fold the contents of standard input to fit within WIDTH columns (or bytes) 132 * and write to standard output. 133 * 134 * If sflag is set, split the line at the last space character on the line. 135 * This flag necessitates storing the line in a buffer until the current 136 * column > width, or a newline or EOF is read. 137 * 138 * The buffer can grow larger than WIDTH due to backspaces and carriage 139 * returns embedded in the input stream. 140 */ 141void |
| 144fold(width) 145 register int width; | 142fold(int width) |
| 146{ 147 static char *buf; 148 static int buf_max; 149 int ch, col, i, indx, space; 150 151 col = indx = 0; 152 while ((ch = getchar()) != EOF) { 153 if (ch == '\n') { --- 37 unchanged lines hidden (view full) --- 191 if (indx != 0) 192 fwrite(buf, 1, indx, stdout); 193} 194 195/* 196 * Update the current column position for a character. 197 */ 198static int | 143{ 144 static char *buf; 145 static int buf_max; 146 int ch, col, i, indx, space; 147 148 col = indx = 0; 149 while ((ch = getchar()) != EOF) { 150 if (ch == '\n') { --- 37 unchanged lines hidden (view full) --- 188 if (indx != 0) 189 fwrite(buf, 1, indx, stdout); 190} 191 192/* 193 * Update the current column position for a character. 194 */ 195static int |
| 199newpos(col, ch) 200 int col, ch; | 196newpos(int col, int ch) |
| 201{ 202 203 if (bflag) 204 ++col; 205 else 206 switch (ch) { 207 case '\b': 208 if (col > 0) --- 16 unchanged lines hidden --- | 197{ 198 199 if (bflag) 200 ++col; 201 else 202 switch (ch) { 203 case '\b': 204 if (col > 0) --- 16 unchanged lines hidden --- |