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Diffstat (limited to 'text_cmds/paste/paste.c')
| -rw-r--r-- | text_cmds/paste/paste.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/text_cmds/paste/paste.c b/text_cmds/paste/paste.c new file mode 100644 index 0000000..20af451 --- /dev/null +++ b/text_cmds/paste/paste.c @@ -0,0 +1,280 @@ +/* + * Copyright (c) 1989, 1993 + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)paste.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/paste/paste.c,v 1.14 2004/06/25 01:48:43 tjr Exp $"); + +#include <sys/types.h> + +#include <err.h> +#include <errno.h> +#include <limits.h> +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wchar.h> +#include <sysexits.h> + +wchar_t *delim; +int delimcnt; + +int parallel(char **); +int sequential(char **); +int tr(wchar_t *); +static void usage(void); + +wchar_t tab[] = L"\t"; + +int +main(int argc, char *argv[]) +{ + int ch, rval, seq; + wchar_t *warg; + const char *arg; + size_t len; + + setlocale(LC_CTYPE, ""); + + seq = 0; + while ((ch = getopt(argc, argv, "d:s")) != -1) + switch(ch) { + case 'd': + arg = optarg; + len = mbsrtowcs(NULL, &arg, 0, NULL); + if (len == (size_t)-1) + err(1, "delimiters"); + warg = malloc((len + 1) * sizeof(*warg)); + if (warg == NULL) + err(1, NULL); + arg = optarg; + len = mbsrtowcs(warg, &arg, len + 1, NULL); + if (len == (size_t)-1) + err(1, "delimiters"); + delimcnt = tr(delim = warg); + break; + case 's': + seq = 1; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + if (*argv == NULL) + usage(); + if (!delim) { + delimcnt = 1; + delim = tab; + } + + if (seq) + rval = sequential(argv); + else + rval = parallel(argv); + exit(rval); +} + +typedef struct _list { + struct _list *next; + FILE *fp; + int cnt; + char *name; +} LIST; + +int +parallel(char **argv) +{ + LIST *lp; + int cnt; + wint_t ich; + wchar_t ch; + char *p; + LIST *head, *tmp; + int opencnt, output; + + for (cnt = 0, head = NULL; (p = *argv); ++argv, ++cnt) { + if ((lp = malloc(sizeof(LIST))) == NULL) + err(1, NULL); + if (p[0] == '-' && !p[1]) + lp->fp = stdin; + else if (!(lp->fp = fopen(p, "r"))) + err(1, "%s", p); + lp->next = NULL; + lp->cnt = cnt; + lp->name = p; + if (!head) + head = tmp = lp; + else { + tmp->next = lp; + tmp = lp; + } + } + + for (opencnt = cnt; opencnt;) { + for (output = 0, lp = head; lp; lp = lp->next) { + if (!lp->fp) { + if (output && lp->cnt && + (ch = delim[(lp->cnt - 1) % delimcnt])) + putwchar(ch); + continue; + } + if ((ich = getwc(lp->fp)) == WEOF) { + if (!--opencnt) + break; + lp->fp = NULL; + if (output && lp->cnt && + (ch = delim[(lp->cnt - 1) % delimcnt])) + putwchar(ch); + continue; + } + /* + * 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])) + putwchar(ch); + } else if ((ch = delim[(lp->cnt - 1) % delimcnt])) + putwchar(ch); + if (ich == '\n') + continue; + do { + putwchar(ich); + } while ((ich = getwc(lp->fp)) != WEOF && ich != '\n'); + if (ferror(lp->fp)) { + errx(EX_IOERR, "Error reading %s", lp->name); + } + } + if (output) + putwchar('\n'); + } + + return (0); +} + +int +sequential(char **argv) +{ + FILE *fp; + int cnt, failed, needdelim; + wint_t ch; + char *p; + + failed = 0; + for (; (p = *argv); ++argv) { + if (p[0] == '-' && !p[1]) + fp = stdin; + else if (!(fp = fopen(p, "r"))) { + warn("%s", p); + failed = 1; + continue; + } + cnt = needdelim = 0; + while ((ch = getwc(fp)) != WEOF) { + if (needdelim) { + needdelim = 0; + if (delim[cnt] != '\0') + putwchar(delim[cnt]); + if (++cnt == delimcnt) + cnt = 0; + } + if (ch != '\n') + putwchar(ch); + else + needdelim = 1; + } + if (needdelim) + putwchar('\n'); + if (fp != stdin) + (void)fclose(fp); + } + + return (failed != 0); +} + +int +tr(wchar_t *arg) +{ + int cnt; + wchar_t 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); +} + +static void +usage(void) +{ + (void)fprintf(stderr, "usage: paste [-s] [-d delimiters] file ...\n"); + exit(1); +} |