[PATCH 04/12] help: use columnizer

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 help.c |   33 +++++++++++----------------------
 1 files changed, 11 insertions(+), 22 deletions(-)

diff --git a/help.c b/help.c
index 888bf8c..e039c14 100644
--- a/help.c
+++ b/help.c
@@ -3,6 +3,7 @@
 #include "exec_cmd.h"
 #include "levenshtein.h"
 #include "help.h"
+#include "column.h"
 
 void add_cmdname(struct cmdnames *cmds, const char *name, int len)
 {
@@ -71,29 +72,17 @@ void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes)
 
 static void pretty_print_string_list(struct cmdnames *cmds, int longest)
 {
-	int cols = 1, rows;
-	int space = longest + 1; /* min 1 SP between words */
-	int max_cols = term_columns() - 1; /* don't print *on* the edge */
-	int i, j;
-
-	if (space < max_cols)
-		cols = max_cols / space;
-	rows = DIV_ROUND_UP(cmds->cnt, cols);
+	struct columnizer cp;
+	int i;
 
-	for (i = 0; i < rows; i++) {
-		printf("  ");
+	memset(&cp, 0, sizeof(cp));
+	cp.flags |= COLUMNIZER_HOMOGENEOUS | COLUMNIZER_COLUMN_FIRST;
+	cp.space = 1;
+	cp.left_space = 2;
 
-		for (j = 0; j < cols; j++) {
-			int n = j * rows + i;
-			int size = space;
-			if (n >= cmds->cnt)
-				break;
-			if (j == cols-1 || n + rows >= cmds->cnt)
-				size = 1;
-			printf("%-*s", size, cmds->names[n]->name);
-		}
-		putchar('\n');
-	}
+	for (i = 0; i < cmds->cnt; i++)
+		feed_columnizer(&cp, cmds->names[i]->name);
+	feed_columnizer(&cp, NULL);
 }
 
 static int is_executable(const char *name)
-- 
1.7.0.1.370.gd3c5