libsmartcols: add lines

Co-Author: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 170 insertions, 0 deletions

diff --git a/libsmartcols/src/line.c b/libsmartcols/src/line.c
new file mode 100644
index 000000000..589d5a2f6
--- /dev/null
+++ b/libsmartcols/src/line.c
@@ -0,0 +1,170 @@
+/*
+ * line.c - functions for table handling at the line level
+ *
+ * Copyright (C) 2014 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "smartcolsP.h"
+
+struct libscols_line *scols_new_line(void)
+{
+	struct libscols_line *ln;
+
+	ln = calloc(1, sizeof(*ln));
+	if (!ln)
+		return NULL;
+
+	ln->refcount = 1;
+	INIT_LIST_HEAD(&ln->ln_lines);
+	INIT_LIST_HEAD(&ln->ln_children);
+	INIT_LIST_HEAD(&ln->ln_branch);
+	return ln;
+}
+
+void scols_ref_line(struct libscols_line *ln)
+{
+	if (ln)
+		ln->refcount++;
+}
+
+void scols_unref_line(struct libscols_line *ln)
+{
+	if (ln && --ln->refcount <= 0) {
+		size_t i;
+
+		list_del(&ln->ln_lines);
+		list_del(&ln->ln_children);
+
+		for (i = 0; i <= ln->ncells; i++)
+			scols_reset_cell(ln->cells[i]);
+		free(ln->data);
+		free(ln->color);
+		free(ln);
+	}
+}
+
+int scols_line_set_userdata(struct libscols_line *ln, void *data)
+{
+	assert(ln);
+	if (!ln)
+		return -EINVAL;
+	ln->userdata = data;
+	return 0;
+}
+
+void *scols_line_get_userdata(struct libscols_line *ln)
+{
+	assert(ln);
+	return ln ? ln->userdata : NULL;
+}
+
+int scols_line_set_parent(struct libscols_line *ln, struct libscols_line *parent)
+{
+	assert(ln);
+	if (!ln)
+		return -EINVAL;
+	ln->parent = parent;
+	return 0;
+}
+
+struct libscols_line *scols_line_get_parent(struct libscols_line *ln)
+{
+	assert(ln);
+	return ln ? ln->parent : NULL;
+}
+
+/*
+ * The default line color, used when cell color unspecified.
+ */
+int scols_line_set_color(struct libscols_line *ln, const char *color)
+{
+	char *p = NULL;
+
+	assert(ln);
+	if (!ln)
+		return -EINVAL;
+	if (color) {
+		p = strdup(color);
+		if (!p)
+			return -ENOMEM;
+	}
+
+	free(ln->color);
+	ln->color = p;
+	return 0;
+}
+
+const char *scols_line_get_color(struct libscols_line *ln)
+{
+	assert(ln);
+	return ln ? ln->color : NULL;
+}
+
+size_t scols_line_get_datasize(struct libscols_line *ln)
+{
+	assert(ln);
+	return ln ? ln->data_sz : 0;
+}
+
+size_t scols_line_get_ncells(struct libscols_line *ln)
+{
+	assert(ln);
+	return ln ? ln->ncells : 0;
+}
+
+struct libscols_cell *scols_line_get_cell(struct libscols_line *ln,
+					  size_t n)
+{
+	assert(ln);
+
+	if (!ln || n >= ln->ncells)
+		return NULL;
+	return ln->cells[n];
+}
+
+struct libscols_line *scols_copy_line(struct libscols_line *ln)
+{
+	struct libscols_line *ret;
+
+	assert (ln);
+	if (!ln)
+		return NULL;
+
+	ret = scols_new_line();
+	if (!ret)
+		return NULL;
+	if (scols_line_set_color(ret, ln->color))
+		goto err;
+	ret->userdata = ln->userdata;
+	ret->parent   = ln->parent;
+	ret->data_sz  = ln->data_sz;
+	ret->ncells   = ln->ncells;
+
+	if (ln->ncells) {
+		size_t i;
+
+		ret->cells = calloc(ln->ncells, sizeof(struct libscols_cell));
+		if (!ret->cells)
+			goto err;
+
+		for (i = 0; i < ret->ncells; ++i) {
+			if (scols_cell_copy_content(ret->cells[i], ln->cells[i]))
+				goto err;
+		}
+	}
+
+	return ret;
+err:
+	scols_unref_line(ret);
+	return NULL;
+}
+
+