From b01305511496c759da6580b56a92f44c3ab923ce Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@systemlinux.org>
Date: Fri, 28 Sep 2007 19:14:43 +0200
Subject: [PATCH] attribute.c: Implement pattern matching for com_rmatt().

A straight forward task with the infrastructure already in place.
---
 attribute.c | 77 ++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 53 insertions(+), 24 deletions(-)

diff --git a/attribute.c b/attribute.c
index 7c72638f..560e7582 100644
--- a/attribute.c
+++ b/attribute.c
@@ -332,40 +332,69 @@ int com_addatt(__a_unused int fd, int argc, char * const * const argv)
 	return send_standard_callback_request(argc - 1, argv + 1, com_addatt_callback,
 		NULL);
 }
+struct remove_attribute_action_data {
+	struct para_buffer pb;
+	int num_removed;
+};
+
+static int remove_attribute(struct osl_table *table, struct osl_row *row,
+		const char *name, void *data)
+{
+	struct remove_attribute_action_data *raad = data;
+	int ret = osl_del_row(table, row);
+	if (ret < 0)
+		para_printf(&raad->pb, "%s: %s\n", name, PARA_STRERROR(-ret));
+	else {
+		para_printf(&raad->pb, "removed %s\n", name);
+		raad->num_removed++;
+	}
+	return 1;
+}
 
 static int com_rmatt_callback(const struct osl_object *query,
-		__a_unused struct osl_object *result)
+		struct osl_object *result)
 {
-	char *p = query->data;
-	int ret, atts_removed = 0;
-	while (p < (char *)query->data + query->size) {
-		struct osl_object obj = {
-			.data = p,
-			.size = strlen(p) + 1
-		};
-		struct osl_row *row;
-		ret = osl_get_row(attribute_table, ATTCOL_NAME,
-			&obj, &row);
-		if (ret < 0)
-			return ret;
-		ret = osl_del_row(attribute_table, row);
+	struct remove_attribute_action_data raad = {.num_removed = 0};
+	int ret;
+	struct pattern_match_data pmd = {
+		.table = attribute_table,
+		.patterns = *query,
+		.loop_col_num = ATTCOL_BITNUM,
+		.match_col_num = ATTCOL_NAME,
+		.data = &raad,
+		.action = remove_attribute
+	};
+	ret = for_each_matching_row(&pmd);
+	if (ret < 0)
+		para_printf(&raad.pb, "%s\n", PARA_STRERROR(-ret));
+	if (raad.num_removed) {
+		find_greatest_att_bitnum();
+		ret = reload_current_mood();
 		if (ret < 0)
-			return ret;
-		atts_removed++;
-		p += strlen(p) + 1;
+			para_printf(&raad.pb, "%s\n", PARA_STRERROR(-ret));
 	}
-	find_greatest_att_bitnum();
-	if (!atts_removed)
-		return 1;
-	return reload_current_mood();
+	if (!raad.pb.buf)
+		para_printf(&raad.pb, "no match -- nothing removed\n");
+	result->data = raad.pb.buf;
+	result->size = raad.pb.size;
+	return 1;
 }
 
-int com_rmatt(__a_unused int fd, int argc, char * const * const argv)
+int com_rmatt(int fd, int argc, char * const * const argv)
 {
+	int ret;
+	struct osl_object result;
+
 	if (argc < 2)
 		return -E_ATTR_SYNTAX;
-	return send_standard_callback_request(argc - 1, argv + 1, com_rmatt_callback,
-		NULL);
+	ret = send_standard_callback_request(argc - 1, argv + 1, com_rmatt_callback,
+		&result);
+	if (ret > 0) {
+		send_buffer(fd, (char *)result.data);
+		free(result.data);
+	} else
+		send_va_buffer(fd, "%s\n", PARA_STRERROR(-ret));
+	return ret;
 }
 
 /**
-- 
2.30.2