libsmartcols: allow to set data by reference to libscols_column

References: https://github.com/karelzak/util-linux/issues/251
Signed-off-by: Karel Zak <kzak@redhat.com>

4 files changed, 40 insertions, 0 deletions

diff --git a/libsmartcols/docs/libsmartcols-sections.txt b/libsmartcols/docs/libsmartcols-sections.txt
index 30fb30225..f2cb62b79 100644
--- a/libsmartcols/docs/libsmartcols-sections.txt
+++ b/libsmartcols/docs/libsmartcols-sections.txt
@@ -60,9 +60,11 @@ scols_line_get_parent
 scols_line_get_userdata
 scols_line_has_children
 scols_line_next_child
+scols_line_refer_column_data
 scols_line_refer_data
 scols_line_remove_child
 scols_line_set_color
+scols_line_set_column_data
 scols_line_set_data
 scols_line_set_userdata
 scols_new_line
diff --git a/libsmartcols/src/libsmartcols.h.in b/libsmartcols/src/libsmartcols.h.in
index 381a8eb9b..0331f3713 100644
--- a/libsmartcols/src/libsmartcols.h.in
+++ b/libsmartcols/src/libsmartcols.h.in
@@ -170,6 +170,8 @@ extern struct libscols_cell *scols_line_get_column_cell(
 		                        struct libscols_column *cl);
 extern int scols_line_set_data(struct libscols_line *ln, size_t n, const char *data);
 extern int scols_line_refer_data(struct libscols_line *ln, size_t n, char *data);
+extern int scols_line_set_column_data(struct libscols_line *ln, struct libscols_column *cl, const char *data);
+extern int scols_line_refer_column_data(struct libscols_line *ln, struct libscols_column *cl, char *data);
 extern struct libscols_line *scols_copy_line(struct libscols_line *ln);
 
 /* table */
diff --git a/libsmartcols/src/libsmartcols.sym b/libsmartcols/src/libsmartcols.sym
index e3176ba5b..9a060cf73 100644
--- a/libsmartcols/src/libsmartcols.sym
+++ b/libsmartcols/src/libsmartcols.sym
@@ -123,5 +123,7 @@ global:
 
 SMARTCOLS_2.28 {
 global:
+	scols_line_refer_column_data;
+	scols_line_set_column_data;
 	scols_table_enable_nowrap;
 } SMARTCOLS_2.27;
diff --git a/libsmartcols/src/line.c b/libsmartcols/src/line.c
index 12826a961..b80ad675f 100644
--- a/libsmartcols/src/line.c
+++ b/libsmartcols/src/line.c
@@ -386,6 +386,23 @@ int scols_line_set_data(struct libscols_line *ln, size_t n, const char *data)
 }
 
 /**
+ * scols_line_set_column_data:
+ * @ln: a pointer to a struct libscols_cell instance
+ * @cl: column, whose data is to be set
+ * @data: actual data to set
+ *
+ * The same as scols_line_set_data() but cell is referenced by column object.
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_line_set_column_data(struct libscols_line *ln,
+			       struct libscols_column *cl,
+			       const char *data)
+{
+	return scols_line_set_data(ln, cl->seqnum, data);
+}
+
+/**
  * scols_line_refer_data:
  * @ln: a pointer to a struct libscols_cell instance
  * @n: number of the cell which will refer to @data
@@ -403,6 +420,23 @@ int scols_line_refer_data(struct libscols_line *ln, size_t n, char *data)
 }
 
 /**
+ * scols_line_refer_column_data:
+ * @ln: a pointer to a struct libscols_cell instance
+ * @cl: column, whose data is to be set
+ * @data: actual data to refer to
+ *
+ * The same as scols_line_refer_data() but cell is referenced by column object.
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_line_refer_column_data(struct libscols_line *ln,
+			       struct libscols_column *cl,
+			       char *data)
+{
+	return scols_line_refer_data(ln, cl->seqnum, data);
+}
+
+/**
  * scols_copy_line:
  * @ln: a pointer to a struct libscols_cell instance
  *