/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93"; #endif #endif /* not lint */ #include /* * lam - laminate files * Author: John Kunze, UCB */ #include #include #include #include #include #include #include #include #include #define MAXOFILES 20 #define BIGBUFSIZ 5 * BUFSIZ static struct openfile { /* open file structure */ FILE *fp; /* file pointer */ short eof; /* eof flag */ short pad; /* pad flag for missing columns */ char eol; /* end of line character */ const char *sepstring; /* string to print before each line */ const char *format; /* printf(3) style string spec. */ } input[MAXOFILES]; static int morefiles; /* set by getargs(), changed by gatherline() */ static int nofinalnl; /* normally append \n to each output line */ static char line[BIGBUFSIZ]; static char *linep; static char *gatherline(struct openfile *); static void getargs(char *[]); static char *pad(struct openfile *); static void usage(void); int main(int argc, char *argv[]) { struct openfile *ip; if (argc == 1) usage(); if (caph_limit_stdio() == -1) err(1, "unable to limit stdio"); getargs(argv); if (!morefiles) usage(); /* * Cache NLS data, for strerror, for err(3), before entering capability * mode. */ caph_cache_catpages(); if (caph_enter() < 0) err(1, "unable to enter capability mode"); for (;;) { linep = line; for (ip = input; ip->fp != NULL; ip++) linep = gatherline(ip); if (!morefiles) exit(0); fputs(line, stdout); fputs(ip->sepstring, stdout); if (!nofinalnl) putchar('\n'); } } static void getargs(char *av[]) { struct openfile *ip = input; char *p, *c; static char fmtbuf[BUFSIZ]; char *fmtp = fmtbuf; int P, S, F, T; cap_rights_t rights_ro; cap_rights_init(&rights_ro, CAP_READ, CAP_FSTAT); P = S = F = T = 0; /* capitalized options */ while ((p = *++av) != NULL) { if (*p != '-' || !p[1]) { if (++morefiles >= MAXOFILES) errx(1, "too many input files"); if (*p == '-') ip->fp = stdin; else if ((ip->fp = fopen(p, "r")) == NULL) { err(1, "%s", p); } if (caph_rights_limit(fileno(ip->fp), &rights_ro) < 0) err(1, "unable to limit rights on: %s", p); ip->pad = P; if (!ip->sepstring) ip->sepstring = (S ? (ip-1)->sepstring : ""); if (!ip->format) ip->format = ((P || F) ? (ip-1)->format : "%s"); if (!ip->eol) ip->eol = (T ? (ip-1)->eol : '\n'); ip++; continue; } c = ++p; switch (tolower((unsigned char)*c)) { case 's': if (*++p || (p = *++av)) ip->sepstring = p; else usage(); S = (*c == 'S' ? 1 : 0); break; case 't': if (*++p || (p = *++av)) ip->eol = *p; else usage(); T = (*c == 'T' ? 1 : 0); nofinalnl = 1; break; case 'p': ip->pad = 1; P = (*c == 'P' ? 1 : 0); /* FALLTHROUGH */ case 'f': F = (*c == 'F' ? 1 : 0); if (*++p || (p = *++av)) { fmtp += strlen(fmtp) + 1; if (fmtp >= fmtbuf + sizeof(fmtbuf)) errx(1, "no more format space"); /* restrict format string to only valid width formatters */ if (strspn(p, "-.0123456789") != strlen(p)) errx(1, "invalid format string `%s'", p); if (snprintf(fmtp, fmtbuf + sizeof(fmtbuf) - fmtp, "%%%ss", p) >= fmtbuf + sizeof(fmtbuf) - fmtp) errx(1, "no more format space"); ip->format = fmtp; } else usage(); break; default: usage(); } } ip->fp = NULL; if (!ip->sepstring) ip->sepstring = ""; } static char * pad(struct openfile *ip) { char *lp = linep; strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); lp += strlen(lp); if (ip->pad) { snprintf(lp, line + sizeof(line) - lp, ip->format, ""); lp += strlen(lp); } return (lp); } static char * gatherline(struct openfile *ip) { char s[BUFSIZ]; int c; char *p; char *lp = linep; char *end = s + sizeof(s) - 1; if (ip->eof) return (pad(ip)); for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++) if ((*p = c) == ip->eol) break; *p = '\0'; if (c == EOF) { ip->eof = 1; if (ip->fp == stdin) fclose(stdin); morefiles--; return (pad(ip)); } strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); lp += strlen(lp); snprintf(lp, line + sizeof(line) - lp, ip->format, s); lp += strlen(lp); return (lp); } static void usage(void) { fprintf(stderr, "%s\n%s\n", "usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...", " lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ..."); exit(1); }