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1.6 ! krw 1: /* $OpenBSD: lam.c,v 1.5 2003/04/05 16:24:23 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: lam.c,v 1.2 1994/11/14 20:27:42 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93";
46: #endif
1.6 ! krw 47: static char rcsid[] = "$OpenBSD: lam.c,v 1.5 2003/04/05 16:24:23 deraadt Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: /*
51: * lam - laminate files
52: * Author: John Kunze, UCB
53: */
54:
55: #include <stdio.h>
56: #include <stdlib.h>
57: #include <string.h>
58:
59: #define MAXOFILES 20
60: #define BIGBUFSIZ 5 * BUFSIZ
61:
62: struct openfile { /* open file structure */
63: FILE *fp; /* file pointer */
64: short eof; /* eof flag */
65: short pad; /* pad flag for missing columns */
66: char eol; /* end of line character */
67: char *sepstring; /* string to print before each line */
68: char *format; /* printf(3) style string spec. */
69: } input[MAXOFILES];
70:
71: int morefiles; /* set by getargs(), changed by gatherline() */
72: int nofinalnl; /* normally append \n to each output line */
73: char line[BIGBUFSIZ];
74: char *linep;
75:
1.4 millert 76: void error(char *, char *);
77: char *gatherline(struct openfile *);
78: void getargs(char *[]);
79: char *pad(struct openfile *);
1.1 deraadt 80:
81: int
82: main(argc, argv)
83: int argc;
84: char *argv[];
85: {
1.3 mpech 86: struct openfile *ip;
1.1 deraadt 87:
88: getargs(argv);
89: if (!morefiles)
90: error("lam - laminate files", "");
91: for (;;) {
92: linep = line;
93: for (ip = input; ip->fp != NULL; ip++)
94: linep = gatherline(ip);
95: if (!morefiles)
96: exit(0);
97: fputs(line, stdout);
98: fputs(ip->sepstring, stdout);
99: if (!nofinalnl)
100: putchar('\n');
101: }
102: }
103:
104: void
105: getargs(av)
106: char *av[];
107: {
1.3 mpech 108: struct openfile *ip = input;
109: char *p;
110: char *c;
1.1 deraadt 111: static char fmtbuf[BUFSIZ];
112: char *fmtp = fmtbuf;
113: int P, S, F, T;
114:
115: P = S = F = T = 0; /* capitalized options */
116: while ((p = *++av) != NULL) {
117: if (*p != '-' || !p[1]) {
118: morefiles++;
119: if (*p == '-')
120: ip->fp = stdin;
121: else if ((ip->fp = fopen(p, "r")) == NULL) {
122: perror(p);
123: exit(1);
124: }
125: ip->pad = P;
126: if (!ip->sepstring)
127: ip->sepstring = (S ? (ip-1)->sepstring : "");
128: if (!ip->format)
129: ip->format = ((P || F) ? (ip-1)->format : "%s");
130: if (!ip->eol)
131: ip->eol = (T ? (ip-1)->eol : '\n');
132: ip++;
133: continue;
134: }
135: switch (*(c = ++p) | 040) {
136: case 's':
137: if (*++p || (p = *++av))
138: ip->sepstring = p;
139: else
140: error("Need string after -%s", c);
141: S = (*c == 'S' ? 1 : 0);
142: break;
143: case 't':
144: if (*++p || (p = *++av))
145: ip->eol = *p;
146: else
147: error("Need character after -%s", c);
148: T = (*c == 'T' ? 1 : 0);
149: nofinalnl = 1;
150: break;
151: case 'p':
152: ip->pad = 1;
153: P = (*c == 'P' ? 1 : 0);
154: case 'f':
155: F = (*c == 'F' ? 1 : 0);
156: if (*++p || (p = *++av)) {
157: fmtp += strlen(fmtp) + 1;
1.6 ! krw 158: if (fmtp >= fmtbuf + BUFSIZ)
1.1 deraadt 159: error("No more format space", "");
1.5 deraadt 160: snprintf(fmtp, fmtbuf + BUFSIZ - fmtp,
161: "%%%ss", p);
1.1 deraadt 162: ip->format = fmtp;
163: }
164: else
165: error("Need string after -%s", c);
166: break;
167: default:
168: error("What do you mean by -%s?", c);
169: break;
170: }
171: }
172: ip->fp = NULL;
173: if (!ip->sepstring)
174: ip->sepstring = "";
175: }
176:
177: char *
178: pad(ip)
179: struct openfile *ip;
180: {
1.3 mpech 181: char *p = ip->sepstring;
182: char *lp = linep;
1.1 deraadt 183:
184: while (*p)
185: *lp++ = *p++;
186: if (ip->pad) {
187: sprintf(lp, ip->format, "");
188: lp += strlen(lp);
189: }
190: return (lp);
191: }
192:
193: char *
194: gatherline(ip)
195: struct openfile *ip;
196: {
197: char s[BUFSIZ];
1.3 mpech 198: int c;
199: char *p;
200: char *lp = linep;
1.1 deraadt 201: char *end = s + BUFSIZ;
202:
203: if (ip->eof)
204: return (pad(ip));
205: for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++)
206: if ((*p = c) == ip->eol)
207: break;
208: *p = '\0';
209: if (c == EOF) {
210: ip->eof = 1;
211: if (ip->fp == stdin)
212: fclose(stdin);
213: morefiles--;
214: return (pad(ip));
215: }
216: p = ip->sepstring;
217: while (*p)
218: *lp++ = *p++;
219: sprintf(lp, ip->format, s);
220: lp += strlen(lp);
221: return (lp);
222: }
223:
224: void
225: error(msg, s)
226: char *msg, *s;
227: {
228: fprintf(stderr, "lam: ");
229: fprintf(stderr, msg, s);
230: fprintf(stderr,
231: "\nUsage: lam [ -[fp] min.max ] [ -s sepstring ] [ -t c ] file ...\n");
232: if (strncmp("lam - ", msg, 6) == 0)
233: fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s",
234: "-f min.max field widths for file fragments\n",
235: "-p min.max like -f, but pad missing fragments\n",
236: "-s sepstring fragment separator\n",
237: "-t c input line terminator is c, no \\n after output lines\n",
238: "Capitalized options affect more than one file.\n");
239: exit(1);
240: }