1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 #endif /* not lint */ 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 /* 45 * lam - laminate files 46 * Author: John Kunze, UCB 47 */ 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #define MAXOFILES 20 56 #define BIGBUFSIZ 5 * BUFSIZ 57 58 struct openfile { /* open file structure */ 59 FILE *fp; /* file pointer */ 60 short eof; /* eof flag */ 61 short pad; /* pad flag for missing columns */ 62 char eol; /* end of line character */ 63 const char *sepstring; /* string to print before each line */ 64 const char *format; /* printf(3) style string spec. */ 65 } input[MAXOFILES]; 66 67 int morefiles; /* set by getargs(), changed by gatherline() */ 68 int nofinalnl; /* normally append \n to each output line */ 69 char line[BIGBUFSIZ]; 70 char *linep; 71 72 static char *gatherline(struct openfile *); 73 static void getargs(char *[]); 74 static char *pad(struct openfile *); 75 static void usage(void); 76 77 int 78 main(int argc, char *argv[]) 79 { 80 struct openfile *ip; 81 82 if (argc == 1) 83 usage(); 84 getargs(argv); 85 if (!morefiles) 86 usage(); 87 for (;;) { 88 linep = line; 89 for (ip = input; ip->fp != NULL; ip++) 90 linep = gatherline(ip); 91 if (!morefiles) 92 exit(0); 93 fputs(line, stdout); 94 fputs(ip->sepstring, stdout); 95 if (!nofinalnl) 96 putchar('\n'); 97 } 98 } 99 100 static void 101 getargs(char *av[]) 102 { 103 struct openfile *ip = input; 104 char *p, *c; 105 static char fmtbuf[BUFSIZ]; 106 char *fmtp = fmtbuf; 107 int P, S, F, T; 108 109 P = S = F = T = 0; /* capitalized options */ 110 while ((p = *++av) != NULL) { 111 if (*p != '-' || !p[1]) { 112 if (++morefiles >= MAXOFILES) 113 errx(1, "too many input files"); 114 if (*p == '-') 115 ip->fp = stdin; 116 else if ((ip->fp = fopen(p, "r")) == NULL) { 117 err(1, "%s", p); 118 } 119 ip->pad = P; 120 if (!ip->sepstring) 121 ip->sepstring = (S ? (ip-1)->sepstring : ""); 122 if (!ip->format) 123 ip->format = ((P || F) ? (ip-1)->format : "%s"); 124 if (!ip->eol) 125 ip->eol = (T ? (ip-1)->eol : '\n'); 126 ip++; 127 continue; 128 } 129 c = ++p; 130 switch (tolower((unsigned char)*c)) { 131 case 's': 132 if (*++p || (p = *++av)) 133 ip->sepstring = p; 134 else 135 usage(); 136 S = (*c == 'S' ? 1 : 0); 137 break; 138 case 't': 139 if (*++p || (p = *++av)) 140 ip->eol = *p; 141 else 142 usage(); 143 T = (*c == 'T' ? 1 : 0); 144 nofinalnl = 1; 145 break; 146 case 'p': 147 ip->pad = 1; 148 P = (*c == 'P' ? 1 : 0); 149 /* FALLTHROUGH */ 150 case 'f': 151 F = (*c == 'F' ? 1 : 0); 152 if (*++p || (p = *++av)) { 153 fmtp += strlen(fmtp) + 1; 154 if (fmtp >= fmtbuf + sizeof(fmtbuf)) 155 errx(1, "no more format space"); 156 /* restrict format string to only valid width formatters */ 157 if (strspn(p, "-.0123456789") != strlen(p)) 158 errx(1, "invalid format string `%s'", p); 159 if (snprintf(fmtp, fmtbuf + sizeof(fmtbuf) - fmtp, "%%%ss", p) 160 >= fmtbuf + sizeof(fmtbuf) - fmtp) 161 errx(1, "no more format space"); 162 ip->format = fmtp; 163 } 164 else 165 usage(); 166 break; 167 default: 168 usage(); 169 } 170 } 171 ip->fp = NULL; 172 if (!ip->sepstring) 173 ip->sepstring = ""; 174 } 175 176 static char * 177 pad(struct openfile *ip) 178 { 179 char *lp = linep; 180 181 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); 182 lp += strlen(lp); 183 if (ip->pad) { 184 snprintf(lp, line + sizeof(line) - lp, ip->format, ""); 185 lp += strlen(lp); 186 } 187 return (lp); 188 } 189 190 static char * 191 gatherline(struct openfile *ip) 192 { 193 char s[BUFSIZ]; 194 int c; 195 char *p; 196 char *lp = linep; 197 char *end = s + sizeof(s) - 1; 198 199 if (ip->eof) 200 return (pad(ip)); 201 for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++) 202 if ((*p = c) == ip->eol) 203 break; 204 *p = '\0'; 205 if (c == EOF) { 206 ip->eof = 1; 207 if (ip->fp == stdin) 208 fclose(stdin); 209 morefiles--; 210 return (pad(ip)); 211 } 212 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); 213 lp += strlen(lp); 214 snprintf(lp, line + sizeof(line) - lp, ip->format, s); 215 lp += strlen(lp); 216 return (lp); 217 } 218 219 static void 220 usage(void) 221 { 222 fprintf(stderr, "%s\n%s\n", 223 "usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...", 224 " lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ..."); 225 exit(1); 226 } 227