summaryrefslogtreecommitdiffstats
path: root/usr.bin/column/column.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/column/column.c')
-rw-r--r--usr.bin/column/column.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/usr.bin/column/column.c b/usr.bin/column/column.c
new file mode 100644
index 0000000..d3f71c5
--- /dev/null
+++ b/usr.bin/column/column.c
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 1989, 1993, 1994
+ * 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. 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 char copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)column.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void c_columnate __P((void));
+void *emalloc __P((int));
+void input __P((FILE *));
+void maketbl __P((void));
+void print __P((void));
+void r_columnate __P((void));
+void usage __P((void));
+
+int termwidth = 80; /* default terminal width */
+
+int entries; /* number of records */
+int eval; /* exit value */
+int maxlength; /* longest record */
+char **list; /* array of pointers to records */
+char *separator = "\t "; /* field separator for table option */
+
+int
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ struct winsize win;
+ FILE *fp;
+ int ch, tflag, xflag;
+ char *p;
+
+ if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
+ if (p = getenv("COLUMNS"))
+ termwidth = atoi(p);
+ } else
+ termwidth = win.ws_col;
+
+ tflag = xflag = 0;
+ while ((ch = getopt(argc, argv, "c:s:tx")) != EOF)
+ switch(ch) {
+ case 'c':
+ termwidth = atoi(optarg);
+ break;
+ case 's':
+ separator = optarg;
+ break;
+ case 't':
+ tflag = 1;
+ break;
+ case 'x':
+ xflag = 1;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (!*argv)
+ input(stdin);
+ else for (; *argv; ++argv)
+ if (fp = fopen(*argv, "r")) {
+ input(fp);
+ (void)fclose(fp);
+ } else {
+ warn("%s", *argv);
+ eval = 1;
+ }
+
+ if (!entries)
+ exit(eval);
+
+ if (tflag)
+ maketbl();
+ else if (maxlength >= termwidth)
+ print();
+ else if (xflag)
+ c_columnate();
+ else
+ r_columnate();
+ exit(eval);
+}
+
+#define TAB 8
+void
+c_columnate()
+{
+ int chcnt, col, cnt, endcol, numcols;
+ char **lp;
+
+ maxlength = (maxlength + TAB) & ~(TAB - 1);
+ numcols = termwidth / maxlength;
+ endcol = maxlength;
+ for (chcnt = col = 0, lp = list;; ++lp) {
+ chcnt += printf("%s", *lp);
+ if (!--entries)
+ break;
+ if (++col == numcols) {
+ chcnt = col = 0;
+ endcol = maxlength;
+ putchar('\n');
+ } else {
+ while ((cnt = (chcnt + TAB & ~(TAB - 1))) <= endcol) {
+ (void)putchar('\t');
+ chcnt = cnt;
+ }
+ endcol += maxlength;
+ }
+ }
+ if (chcnt)
+ putchar('\n');
+}
+
+void
+r_columnate()
+{
+ int base, chcnt, cnt, col, endcol, numcols, numrows, row;
+
+ maxlength = (maxlength + TAB) & ~(TAB - 1);
+ numcols = termwidth / maxlength;
+ numrows = entries / numcols;
+ if (entries % numcols)
+ ++numrows;
+
+ for (row = 0; row < numrows; ++row) {
+ endcol = maxlength;
+ for (base = row, chcnt = col = 0; col < numcols; ++col) {
+ chcnt += printf("%s", list[base]);
+ if ((base += numrows) >= entries)
+ break;
+ while ((cnt = (chcnt + TAB & ~(TAB - 1))) <= endcol) {
+ (void)putchar('\t');
+ chcnt = cnt;
+ }
+ endcol += maxlength;
+ }
+ putchar('\n');
+ }
+}
+
+void
+print()
+{
+ int cnt;
+ char **lp;
+
+ for (cnt = entries, lp = list; cnt--; ++lp)
+ (void)printf("%s\n", *lp);
+}
+
+typedef struct _tbl {
+ char **list;
+ int cols, *len;
+} TBL;
+#define DEFCOLS 25
+
+void
+maketbl()
+{
+ TBL *t;
+ int coloff, cnt;
+ char *p, **lp;
+ int *lens, maxcols;
+ TBL *tbl;
+ char **cols;
+
+ t = tbl = emalloc(entries * sizeof(TBL));
+ cols = emalloc((maxcols = DEFCOLS) * sizeof(char *));
+ lens = emalloc(maxcols * sizeof(int));
+ for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) {
+ for (coloff = 0, p = *lp; cols[coloff] = strtok(p, separator);
+ p = NULL)
+ if (++coloff == maxcols) {
+ if (!(cols = realloc(cols, (u_int)maxcols +
+ DEFCOLS * sizeof(char *))) ||
+ !(lens = realloc(lens,
+ (u_int)maxcols + DEFCOLS * sizeof(int))))
+ err(1, NULL);
+ memset((char *)lens + maxcols * sizeof(int),
+ 0, DEFCOLS * sizeof(int));
+ maxcols += DEFCOLS;
+ }
+ t->list = emalloc(coloff * sizeof(char *));
+ t->len = emalloc(coloff * sizeof(int));
+ for (t->cols = coloff; --coloff >= 0;) {
+ t->list[coloff] = cols[coloff];
+ t->len[coloff] = strlen(cols[coloff]);
+ if (t->len[coloff] > lens[coloff])
+ lens[coloff] = t->len[coloff];
+ }
+ }
+ for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
+ for (coloff = 0; coloff < t->cols - 1; ++coloff)
+ (void)printf("%s%*s", t->list[coloff],
+ lens[coloff] - t->len[coloff] + 2, " ");
+ (void)printf("%s\n", t->list[coloff]);
+ }
+}
+
+#define DEFNUM 1000
+#define MAXLINELEN (LINE_MAX + 1)
+
+void
+input(fp)
+ FILE *fp;
+{
+ static int maxentry;
+ int len;
+ char *p, buf[MAXLINELEN];
+
+ if (!list)
+ list = emalloc((maxentry = DEFNUM) * sizeof(char *));
+ while (fgets(buf, MAXLINELEN, fp)) {
+ for (p = buf; *p && isspace(*p); ++p);
+ if (!*p)
+ continue;
+ if (!(p = strchr(p, '\n'))) {
+ warnx("line too long");
+ eval = 1;
+ continue;
+ }
+ *p = '\0';
+ len = p - buf;
+ if (maxlength < len)
+ maxlength = len;
+ if (entries == maxentry) {
+ maxentry += DEFNUM;
+ if (!(list = realloc(list,
+ (u_int)maxentry * sizeof(char *))))
+ err(1, NULL);
+ }
+ list[entries++] = strdup(buf);
+ }
+}
+
+void *
+emalloc(size)
+ int size;
+{
+ char *p;
+
+ if (!(p = malloc(size)))
+ err(1, NULL);
+ memset(p, 0, size);
+ return (p);
+}
+
+void
+usage()
+{
+
+ (void)fprintf(stderr,
+ "usage: column [-tx] [-c columns] [file ...]\n");
+ exit(1);
+}
OpenPOWER on IntegriCloud