From patchwork Fri Feb 5 18:10:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parav Pandit X-Patchwork-Id: 377444 Return-Path: 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 ; 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 ; Fri, 5 Feb 2021 18:14:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233756AbhBEQcQ (ORCPT ); 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 ); 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 ; 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 To: , , , , , CC: Parav Pandit 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 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: 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 --- 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); +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_map *map, uint8_t val) } return NULL; } + +unsigned int get_str_char_count(const char *str, int match) +{ + unsigned int count = 0; + const char *pos = str; + + while ((pos = strchr(pos, match))) { + count++; + pos++; + } + return count; +} + +int str_split_by_char(char *str, char **before, char **after, int match) +{ + char *slash; + + slash = strrchr(str, match); + if (!slash) + return -EINVAL; + *slash = '\0'; + *before = str; + *after = slash + 1; + return 0; +} + +struct indent_mem *alloc_indent_mem(void) +{ + struct indent_mem *mem = malloc(sizeof(*mem)); + + if (!mem) + return NULL; + strcpy(mem->indent_str, ""); + mem->indent_level = 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 += INDENT_STR_STEP; + memset(mem->indent_str, ' ', sizeof(mem->indent_str)); + mem->indent_str[mem->indent_level] = '\0'; +} + +void dec_indent(struct indent_mem *mem) +{ + if (mem->indent_level - INDENT_STR_STEP < 0) + return; + mem->indent_level -= INDENT_STR_STEP; + mem->indent_str[mem->indent_level] = '\0'; +} + +void print_indent(struct indent_mem *mem) +{ + if (mem->indent_level) + printf("%s", mem->indent_str); +}