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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 #endif /* not lint */ 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 47 48 /* 49 * lam - laminate files 50 * Author: John Kunze, UCB 51 */ 52 53 #include <ctype.h> 54 #include <err.h> 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 const char *sepstring; /* string to print before each line */ 68 const 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 76 static char *gatherline(struct openfile *); 77 static void getargs(char *[]); 78 static char *pad(struct openfile *); 79 static void usage(void); 80 81 int 82 main(int argc, char *argv[]) 83 { 84 struct openfile *ip; 85 86 if (argc == 1) 87 usage(); 88 getargs(argv); 89 if (!morefiles) 90 usage(); 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 static void 105 getargs(char *av[]) 106 { 107 struct openfile *ip = input; 108 char *p, *c; 109 static char fmtbuf[BUFSIZ]; 110 char *fmtp = fmtbuf; 111 int P, S, F, T; 112 113 P = S = F = T = 0; /* capitalized options */ 114 while ((p = *++av) != NULL) { 115 if (*p != '-' || !p[1]) { 116 if (++morefiles >= MAXOFILES) 117 errx(1, "too many input files"); 118 if (*p == '-') 119 ip->fp = stdin; 120 else if ((ip->fp = fopen(p, "r")) == NULL) { 121 err(1, "%s", p); 122 } 123 ip->pad = P; 124 if (!ip->sepstring) 125 ip->sepstring = (S ? (ip-1)->sepstring : ""); 126 if (!ip->format) 127 ip->format = ((P || F) ? (ip-1)->format : "%s"); 128 if (!ip->eol) 129 ip->eol = (T ? (ip-1)->eol : '\n'); 130 ip++; 131 continue; 132 } 133 c = ++p; 134 switch (tolower((unsigned char)*c)) { 135 case 's': 136 if (*++p || (p = *++av)) 137 ip->sepstring = p; 138 else 139 usage(); 140 S = (*c == 'S' ? 1 : 0); 141 break; 142 case 't': 143 if (*++p || (p = *++av)) 144 ip->eol = *p; 145 else 146 usage(); 147 T = (*c == 'T' ? 1 : 0); 148 nofinalnl = 1; 149 break; 150 case 'p': 151 ip->pad = 1; 152 P = (*c == 'P' ? 1 : 0); 153 /* FALLTHROUGH */ 154 case 'f': 155 F = (*c == 'F' ? 1 : 0); 156 if (*++p || (p = *++av)) { 157 fmtp += strlen(fmtp) + 1; 158 if (fmtp >= fmtbuf + sizeof(fmtbuf)) 159 errx(1, "no more format space"); 160 /* restrict format string to only valid width formatters */ 161 if (strspn(p, "-.0123456789") != strlen(p)) 162 errx(1, "invalid format string `%s'", p); 163 if (snprintf(fmtp, fmtbuf + sizeof(fmtbuf) - fmtp, "%%%ss", p) 164 >= fmtbuf + sizeof(fmtbuf) - fmtp) 165 errx(1, "no more format space"); 166 ip->format = fmtp; 167 } 168 else 169 usage(); 170 break; 171 default: 172 usage(); 173 } 174 } 175 ip->fp = NULL; 176 if (!ip->sepstring) 177 ip->sepstring = ""; 178 } 179 180 static char * 181 pad(struct openfile *ip) 182 { 183 char *lp = linep; 184 185 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); 186 lp += strlen(lp); 187 if (ip->pad) { 188 snprintf(lp, line + sizeof(line) - lp, ip->format, ""); 189 lp += strlen(lp); 190 } 191 return (lp); 192 } 193 194 static char * 195 gatherline(struct openfile *ip) 196 { 197 char s[BUFSIZ]; 198 int c; 199 char *p; 200 char *lp = linep; 201 char *end = s + sizeof(s) - 1; 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 strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); 217 lp += strlen(lp); 218 snprintf(lp, line + sizeof(line) - lp, ip->format, s); 219 lp += strlen(lp); 220 return (lp); 221 } 222 223 static void 224 usage(void) 225 { 226 fprintf(stderr, "%s\n%s\n", 227 "usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...", 228 " lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ..."); 229 exit(1); 230 } 231