From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <netdev-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH,
	DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,
	URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id F3C0BC433E9
	for <netdev@archiver.kernel.org>; Fri,  5 Feb 2021 18:14:55 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id B293564FDF
	for <netdev@archiver.kernel.org>; Fri,  5 Feb 2021 18:14:55 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S233756AbhBEQcQ (ORCPT <rfc822;netdev@archiver.kernel.org>);
        Fri, 5 Feb 2021 11:32:16 -0500
Received: from hqnvemgate25.nvidia.com ([216.228.121.64]:14111 "EHLO
        hqnvemgate25.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S233522AbhBEQ3K (ORCPT
        <rfc822;netdev@vger.kernel.org>); Fri, 5 Feb 2021 11:29:10 -0500
Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, AES256-SHA)
        id <B601d8a2a0002>; Fri, 05 Feb 2021 10:10:50 -0800
Received: from sw-mtx-036.mtx.labs.mlnx (172.20.145.6) by HQMAIL107.nvidia.com
 (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 5 Feb
 2021 18:10:49 +0000
From:   Parav Pandit <parav@nvidia.com>
To:     <virtualization@lists.linux-foundation.org>,
        <netdev@vger.kernel.org>, <dsahern@gmail.com>,
        <stephen@networkplumber.org>, <mst@redhat.com>,
        <jasowang@redhat.com>
CC:     Parav Pandit <parav@nvidia.com>
Subject: [PATCH iproute2-next v4 2/5] utils: Add helper routines for indent handling
Date:   Fri, 5 Feb 2021 20:10:26 +0200
Message-ID: <20210205181029.365461-3-parav@nvidia.com>
X-Mailer: git-send-email 2.26.2
In-Reply-To: <20210205181029.365461-1-parav@nvidia.com>
References: <20210122112654.9593-3-parav@nvidia.com>
 <20210205181029.365461-1-parav@nvidia.com>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain
X-Originating-IP: [172.20.145.6]
X-ClientProxiedBy: HQMAIL111.nvidia.com (172.20.187.18) To
 HQMAIL107.nvidia.com (172.20.187.13)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
        t=1612548650; bh=HDT133gXudxB52omx1TuwZ9j1XEiBgbv7aS9W5cuFWc=;
        h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To:
         References:MIME-Version:Content-Transfer-Encoding:Content-Type:
         X-Originating-IP:X-ClientProxiedBy;
        b=A37NgJPM6J5lnl9+8X715PpXm084B2FM9VGHuA2AzSFM3+4wRBcIPpsfsvaq9qSvd
         kFc+3zVtrCrjpVOdn0+H4y0862xzlPGQkJ5zQ69/duQYnocWjgmf7ZT5vPBYOx77Tz
         Vo4esNDQ6DnpPIMyYAnMMhxexYCK1j61rlmpVZAGkfVXKHQ0GvjA963+s0pzLDzyOu
         DRh+m9nKsfbCXeYvtWt0JUFs/tH/G6ihhkusfN1x8bQUqKaAezLBMVnC+856wsvpQP
         Wrs2b1Q9Tdlk+HttRX0mowTF60oSjme/OqgyEGNToystHXo5NPRsEsOhUauwW71018
         UR2g8pBJ4iUrg==
Precedence: bulk
List-ID: <netdev.vger.kernel.org>
X-Mailing-List: netdev@vger.kernel.org

Subsequent patch needs to use 2 char indentation for nested objects.
Hence introduce a generic helpers to allocate, deallocate, increment,
decrement and to print indent block.

Signed-off-by: Parav Pandit <parav@nvidia.com>
---
changelog:
v2->v3:
 - patch split from vdpa tool patch
---
 include/utils.h | 16 ++++++++++++
 lib/utils.c     | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+)

diff --git a/include/utils.h b/include/utils.h
index e66090ae..9b76c92a 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -349,4 +349,20 @@ int str_map_lookup_str(const struct str_num_map *map, =
const char *needle);
 const char *str_map_lookup_u16(const struct str_num_map *map, uint16_t val=
);
 const char *str_map_lookup_u8(const struct str_num_map *map, uint8_t val);
=20
+unsigned int get_str_char_count(const char *str, int match);
+int str_split_by_char(char *str, char **before, char **after, int match);
+
+#define INDENT_STR_MAXLEN 32
+
+struct indent_mem {
+	int indent_level;
+	char indent_str[INDENT_STR_MAXLEN + 1];
+};
+
+struct indent_mem *alloc_indent_mem(void);
+void free_indent_mem(struct indent_mem *mem);
+void inc_indent(struct indent_mem *mem);
+void dec_indent(struct indent_mem *mem);
+void print_indent(struct indent_mem *mem);
+
 #endif /* __UTILS_H__ */
diff --git a/lib/utils.c b/lib/utils.c
index af1b553c..cc6d0e34 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -1978,3 +1978,69 @@ const char *str_map_lookup_u8(const struct str_num_m=
ap *map, uint8_t val)
 	}
 	return NULL;
 }
+
+unsigned int get_str_char_count(const char *str, int match)
+{
+	unsigned int count =3D 0;
+	const char *pos =3D str;
+
+	while ((pos =3D strchr(pos, match))) {
+		count++;
+		pos++;
+	}
+	return count;
+}
+
+int str_split_by_char(char *str, char **before, char **after, int match)
+{
+	char *slash;
+
+	slash =3D strrchr(str, match);
+	if (!slash)
+		return -EINVAL;
+	*slash =3D '\0';
+	*before =3D str;
+	*after =3D slash + 1;
+	return 0;
+}
+
+struct indent_mem *alloc_indent_mem(void)
+{
+	struct indent_mem *mem =3D malloc(sizeof(*mem));
+
+	if (!mem)
+		return NULL;
+	strcpy(mem->indent_str, "");
+	mem->indent_level =3D 0;
+	return mem;
+}
+
+void free_indent_mem(struct indent_mem *mem)
+{
+	free(mem);
+}
+
+#define INDENT_STR_STEP 2
+
+void inc_indent(struct indent_mem *mem)
+{
+	if (mem->indent_level + INDENT_STR_STEP > INDENT_STR_MAXLEN)
+		return;
+	mem->indent_level +=3D INDENT_STR_STEP;
+	memset(mem->indent_str, ' ', sizeof(mem->indent_str));
+	mem->indent_str[mem->indent_level] =3D '\0';
+}
+
+void dec_indent(struct indent_mem *mem)
+{
+	if (mem->indent_level - INDENT_STR_STEP < 0)
+		return;
+	mem->indent_level -=3D INDENT_STR_STEP;
+	mem->indent_str[mem->indent_level] =3D '\0';
+}
+
+void print_indent(struct indent_mem *mem)
+{
+	if (mem->indent_level)
+		printf("%s", mem->indent_str);
+}
--=20
2.26.2