/* $OpenBSD: paste.c,v 1.21 2015/10/09 01:37:08 deraadt Exp $ */ /* * Copyright (c) 1989 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Adam S. Moskowitz of Menlo Consulting. * * 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. */ #include #include #include #include #include #include #include #include #include char *delim; int delimcnt; int tr(char *); void usage(void); void parallel(char **); void sequential(char **); int main(int argc, char *argv[]) { extern char *optarg; extern int optind; int ch, seq; if (pledge("stdio rpath", NULL) == -1) err(1, "pledge"); seq = 0; while ((ch = getopt(argc, argv, "d:s")) != -1) { switch (ch) { case 'd': delimcnt = tr(delim = optarg); break; case 's': seq = 1; break; case '?': default: usage(); } } argc -= optind; argv += optind; if (!delim) { delimcnt = 1; delim = "\t"; } if (seq) sequential(argv); else parallel(argv); exit(0); } struct list { SIMPLEQ_ENTRY(list) entries; FILE *fp; int cnt; char *name; }; void parallel(char **argv) { SIMPLEQ_HEAD(, list) head = SIMPLEQ_HEAD_INITIALIZER(head); struct list *lp; int cnt; char ch, *p; int opencnt, output; char *buf, *lbuf; size_t len; for (cnt = 0; (p = *argv); ++argv, ++cnt) { if (!(lp = malloc(sizeof(struct list)))) err(1, "malloc"); if (p[0] == '-' && !p[1]) lp->fp = stdin; else if (!(lp->fp = fopen(p, "r"))) err(1, "%s", p); lp->cnt = cnt; lp->name = p; SIMPLEQ_INSERT_TAIL(&head, lp, entries); } for (opencnt = cnt; opencnt;) { output = 0; SIMPLEQ_FOREACH(lp, &head, entries) { lbuf = NULL; if (!lp->fp) { if (output && lp->cnt && (ch = delim[(lp->cnt - 1) % delimcnt])) putchar(ch); continue; } if (!(buf = fgetln(lp->fp, &len))) { if (!--opencnt) break; if (lp->fp != stdin) (void)fclose(lp->fp); lp->fp = NULL; if (output && lp->cnt && (ch = delim[(lp->cnt - 1) % delimcnt])) putchar(ch); continue; } if (buf[len - 1] == '\n') buf[len - 1] = '\0'; else { if ((lbuf = malloc(len + 1)) == NULL) err(1, "malloc"); memcpy(lbuf, buf, len); lbuf[len] = '\0'; buf = lbuf; } /* * make sure that we don't print any delimiters * unless there's a non-empty file. */ if (!output) { output = 1; for (cnt = 0; cnt < lp->cnt; ++cnt) if ((ch = delim[cnt % delimcnt])) putchar(ch); } else if ((ch = delim[(lp->cnt - 1) % delimcnt])) putchar(ch); (void)printf("%s", buf); if (lbuf) free(lbuf); } if (output) putchar('\n'); } } void sequential(char **argv) { FILE *fp; int cnt; char ch, *p, *dp; char *buf, *lbuf; size_t len; for (; (p = *argv); ++argv) { lbuf = NULL; if (p[0] == '-' && !p[1]) fp = stdin; else if (!(fp = fopen(p, "r"))) { warn("%s", p); continue; } if ((buf = fgetln(fp, &len))) { for (cnt = 0, dp = delim;;) { if (buf[len - 1] == '\n') buf[len - 1] = '\0'; else { if ((lbuf = malloc(len + 1)) == NULL) err(1, "malloc"); memcpy(lbuf, buf, len); lbuf[len] = '\0'; buf = lbuf; } (void)printf("%s", buf); if (!(buf = fgetln(fp, &len))) break; if ((ch = *dp++)) putchar(ch); if (++cnt == delimcnt) { dp = delim; cnt = 0; } } putchar('\n'); } if (fp != stdin) (void)fclose(fp); if (lbuf) free(lbuf); } } int tr(char *arg) { int cnt; char ch, *p; for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) { if (ch == '\\') { switch (ch = *p++) { case 'n': *arg = '\n'; break; case 't': *arg = '\t'; break; case '0': *arg = '\0'; break; default: *arg = ch; break; } } else *arg = ch; } if (!cnt) errx(1, "no delimiters specified"); return (cnt); } void usage(void) { extern char *__progname; (void)fprintf(stderr, "usage: %s [-s] [-d list] file ...\n", __progname); exit(1); }