1 files changed, 38 insertions, 0 deletions
diff --git a/column.h b/column.h
new file mode 100644
index 0000000000..b8719b3976
--- /dev/null
+++ b/column.h
@@ -0,0 +1,38 @@
+#ifndef COLUMN_H
+#define COLUMN_H
+
+#define COL_LAYOUT_MASK   0x000F
+#define COL_ENABLE_MASK   0x0030   /* always, never or auto */
+#define COL_PARSEOPT      0x0040   /* --column is given from cmdline */
+
+#define COL_DISABLED      0x0000   /* must be zero */
+#define COL_ENABLED       0x0010
+#define COL_AUTO          0x0020
+
+#define COL_LAYOUT(c) ((c) & COL_LAYOUT_MASK)
+#define COL_PLAIN             15   /* one column */
+
+#define explicitly_enable_column(c) \
+	(((c) & COL_PARSEOPT) && column_active(c))
+
+struct column_options {
+	int width;
+	int padding;
+	const char *indent;
+	const char *nl;
+};
+
+struct option;
+extern int parseopt_column_callback(const struct option *, const char *, int);
+extern int git_column_config(const char *var, const char *value,
+			     const char *command, unsigned int *colopts);
+extern int finalize_colopts(unsigned int *colopts, int stdout_is_tty);
+static inline int column_active(unsigned int colopts)
+{
+	return (colopts & COL_ENABLE_MASK) == COL_ENABLED;
+}
+
+extern void print_columns(const struct string_list *list, unsigned int colopts,
+			  const struct column_options *opts);
+
+#endif