libsmartcols: commit missing file

Signed-off-by: Karel Zak <kzak@redhat.com>

libsmartcols/samples/wrapnl.c

@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2010-2014 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <getopt.h>
+
+#include "c.h"
+#include "nls.h"
+#include "strutils.h"
+#include "xalloc.h"
+#include "randutils.h"
+
+#include "libsmartcols.h"
+
+static int opt_random;
+
+enum { COL_NAME, COL_DATA, COL_LIKE };
+
+/* add columns to the @tb */
+static void setup_columns(struct libscols_table *tb)
+{
+	if (!scols_table_new_column(tb, "NAME", 0, SCOLS_FL_TREE))
+		goto fail;
+	if (!scols_table_new_column(tb, "DATA", 0, SCOLS_FL_WRAPNL))
+		goto fail;
+	if (!scols_table_new_column(tb, "LIKE", 0, SCOLS_FL_RIGHT))
+		goto fail;
+	return;
+fail:
+	scols_unref_table(tb);
+	err(EXIT_FAILURE, "failed to create output columns");
+}
+
+static char *gen_text(const char *prefix, const char *sub_prefix, char *buf, size_t sz, int nl)
+{
+	int x = snprintf(buf, sz,  "%s-%s-", prefix, sub_prefix);
+	int next_nl = -1;
+
+	for ( ; (size_t)x < sz - 1; x++) {
+		buf[x] = next_nl == 0 ? '\n' : *prefix;
+
+		if (nl)
+			next_nl--;
+		if (nl && next_nl < 0)
+			next_nl = opt_random ?
+					(size_t) rand_get_number(1, sz / 2) :
+					sz / 3;
+	}
+
+	buf[x++] = 'x';
+	buf[x] = '\0';
+	return buf;
+}
+
+static struct libscols_line * add_line(	struct libscols_table *tb,
+					struct libscols_line *parent,
+					const char *prefix)
+{
+	char buf[BUFSIZ];
+	struct libscols_line *ln = scols_table_new_line(tb, parent);
+	if (!ln)
+		err(EXIT_FAILURE, "failed to create output line");
+
+static int x = 0;
+
+	if (scols_line_set_data(ln, COL_NAME, gen_text(prefix, "N", buf, 15, 0)))
+		goto fail;
+	if (scols_line_set_data(ln, COL_DATA, gen_text(prefix, "F", buf, x % 2 ? 40 : 5, x % 2 ? 1 : 0)))
+		goto fail;
+	if (scols_line_set_data(ln, COL_LIKE, "1"))
+		goto fail;
+
+x++;
+
+	return ln;
+fail:
+	scols_unref_table(tb);
+	err(EXIT_FAILURE, "failed to create output line");
+}
+
+int main(int argc, char *argv[])
+{
+	struct libscols_table *tb;
+	struct libscols_line *ln, *xln;
+	int c;
+
+	static const struct option longopts[] = {
+		{ "random",	0, 0, 'r' },
+		{ NULL, 0, 0, 0 },
+	};
+
+	setlocale(LC_ALL, "");	/* just to have enable UTF8 chars */
+
+	while((c = getopt_long(argc, argv, "r", longopts, NULL)) != -1) {
+		switch(c) {
+		case 'r':
+			opt_random = 1;
+			break;
+		default:
+			err(EXIT_FAILURE, "%s [-r|--random]\n", program_invocation_short_name);
+		}
+	}
+
+	if (opt_random)
+		xsrand();
+
+	scols_init_debug(0);
+
+	tb = scols_new_table();
+	if (!tb)
+		err(EXIT_FAILURE, "failed to create output table");
+
+	scols_table_enable_colors(tb, isatty(STDOUT_FILENO));
+	setup_columns(tb);
+
+	ln = add_line(tb, NULL, "A");
+	add_line(tb, ln, "aa");
+	add_line(tb, ln, "ab");
+
+	ln = add_line(tb, NULL, "B");
+	xln = add_line(tb, ln, "ba");
+	add_line(tb, xln, "baa");
+	add_line(tb, xln, "bab");
+	add_line(tb, ln, "bb");
+
+	scols_print_table(tb);
+	scols_unref_table(tb);
+	return EXIT_SUCCESS;
+}