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1.9 ! deraadt 1: /* $OpenBSD: vis.c,v 1.8 2003/09/08 00:07:41 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: vis.c,v 1.4 1994/12/20 16:13:03 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1989, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.6 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
1.8 millert 34: static const char copyright[] =
1.1 deraadt 35: "@(#) Copyright (c) 1989, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
1.8 millert 41: static const char sccsid[] = "@(#)vis.c 8.1 (Berkeley) 6/6/93";
1.1 deraadt 42: #endif
1.9 ! deraadt 43: static const char rcsid[] = "$OpenBSD: vis.c,v 1.8 2003/09/08 00:07:41 millert Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
46: #include <stdio.h>
47: #include <string.h>
48: #include <stdlib.h>
49: #include <unistd.h>
50: #include <err.h>
51: #include <vis.h>
52:
1.9 ! deraadt 53: int eflags, fold, foldwidth=80, none, markeol;
! 54:
! 55: #ifdef DEBUG
! 56: int debug;
! 57: #endif
1.1 deraadt 58:
1.5 millert 59: int foldit(char *, int, int);
1.9 ! deraadt 60: void process(FILE *);
1.8 millert 61: __dead void usage(void);
1.1 deraadt 62:
63: int
1.7 deraadt 64: main(int argc, char *argv[])
1.1 deraadt 65: {
66: FILE *fp;
67: int ch;
68:
1.3 millert 69: while ((ch = getopt(argc, argv, "nwctsobfF:ld")) != -1)
1.1 deraadt 70: switch((char)ch) {
71: case 'n':
72: none++;
73: break;
74: case 'w':
75: eflags |= VIS_WHITE;
76: break;
77: case 'c':
78: eflags |= VIS_CSTYLE;
79: break;
80: case 't':
81: eflags |= VIS_TAB;
82: break;
83: case 's':
84: eflags |= VIS_SAFE;
85: break;
86: case 'o':
87: eflags |= VIS_OCTAL;
88: break;
89: case 'b':
90: eflags |= VIS_NOSLASH;
91: break;
92: case 'F':
93: if ((foldwidth = atoi(optarg))<5) {
94: errx(1, "can't fold lines to less than 5 cols");
95: /* NOTREACHED */
96: }
97: /*FALLTHROUGH*/
98: case 'f':
99: fold++; /* fold output lines to 80 cols */
100: break; /* using hidden newline */
101: case 'l':
102: markeol++; /* mark end of line with \$ */
103: break;
104: #ifdef DEBUG
105: case 'd':
106: debug++;
107: break;
108: #endif
109: case '?':
110: default:
1.8 millert 111: usage();
1.1 deraadt 112: }
113: argc -= optind;
114: argv += optind;
115:
116: if (*argv)
117: while (*argv) {
118: if ((fp=fopen(*argv, "r")) != NULL)
1.9 ! deraadt 119: process(fp);
1.1 deraadt 120: else
121: warn("%s", *argv);
122: argv++;
123: }
124: else
1.9 ! deraadt 125: process(stdin);
1.1 deraadt 126: exit(0);
127: }
128:
129: void
1.9 ! deraadt 130: process(FILE *fp)
1.1 deraadt 131: {
132: static int col = 0;
1.4 mpech 133: char *cp = "\0"+1; /* so *(cp-1) starts out != '\n' */
134: int c, rachar;
1.1 deraadt 135: char buff[5];
136:
137: c = getc(fp);
138: while (c != EOF) {
139: rachar = getc(fp);
140: if (none) {
141: cp = buff;
142: *cp++ = c;
143: if (c == '\\')
144: *cp++ = '\\';
145: *cp = '\0';
146: } else if (markeol && c == '\n') {
147: cp = buff;
148: if ((eflags & VIS_NOSLASH) == 0)
149: *cp++ = '\\';
150: *cp++ = '$';
151: *cp++ = '\n';
152: *cp = '\0';
153: } else
154: (void) vis(buff, (char)c, eflags, (char)rachar);
155:
156: cp = buff;
157: if (fold) {
158: #ifdef DEBUG
159: if (debug)
160: printf("<%02d,", col);
161: #endif
162: col = foldit(cp, col, foldwidth);
163: #ifdef DEBUG
164: if (debug)
165: printf("%02d>", col);
166: #endif
167: }
168: do {
169: putchar(*cp);
170: } while (*++cp);
171: c = rachar;
172: }
173: /*
174: * terminate partial line with a hidden newline
175: */
176: if (fold && *(cp-1) != '\n')
177: printf("\\\n");
1.8 millert 178: }
179:
180: __dead void
181: usage(void)
182: {
183: extern char *__progname;
184:
185: fprintf(stderr, "usage: %s [-cbflnostw] [-F [foldwidth]] [file ...]\n",
186: __progname);
187: exit(1);
1.1 deraadt 188: }