From patchwork Tue Oct 5 20:15:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Kozlyuk X-Patchwork-Id: 100549 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 32281A0C45; Tue, 5 Oct 2021 22:15:59 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 1D6E741297; Tue, 5 Oct 2021 22:15:54 +0200 (CEST) Received: from mail-lf1-f41.google.com (mail-lf1-f41.google.com [209.85.167.41]) by mails.dpdk.org (Postfix) with ESMTP id D2BCD4014F for ; Tue, 5 Oct 2021 22:15:52 +0200 (CEST) Received: by mail-lf1-f41.google.com with SMTP id i4so922155lfv.4 for ; Tue, 05 Oct 2021 13:15:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=u0zBhMPg2UZxqNoTpQSZS/GYKyQB7o4+MX6FZQGLcQU=; b=ErDtTNH8y1OFhT4UyiiD5HU5g2XgnCT2ajcZ3ZnTPClFy576ccTI4rgf2TgjkXzVSr UgpwdRQSMy3jvW10vLn51s3hkB9uWspCAM9n2p0aPMYwa+/2bjgclqqhuJtriapjn3Jk 9VJZ5uTYFJs8Pjj62UtlRFW59nHrHlkQk6nyqgNjBdT60HHJ/G/84mkMGPb+g6PdHf/q wHbYjwfsvwZhIK533qdxt0o8v1R8HCQsTvi8Wryte+0xZv2mrS0c21KWclYybMMqZd0d /j7F+APxoCdDHE+bBjC6vfpHVD4tEycL+PQUp6CHc3UlP2iugDmfOApCjpjeinnqs9Xi iiaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=u0zBhMPg2UZxqNoTpQSZS/GYKyQB7o4+MX6FZQGLcQU=; b=IsHHyl3z9tVY2AOcZ5eHBeKkXhxr56WqZo2q0bWHWOGyHWP5X/FQh6d4/+YrszZCzN YZbcN4gOzmjxcMwkqsuxv3/ryPAl2T2TsHcV+ikk8p0ZpfS/ZEpPgPl0ijMqwsEvIY2b +MICFJHOkAMhiKpxEngWpz/f41/X+ay3etAm7WSmpfE0OWGrCQhsTTnDnGZGl2a3Fr7g JPbFJSgQWbM0gy79gyfmAB8kH+kZOyjMySTnKHIAqMHfzXZxdYhuCqZkDlHKuW7zCijm HSxJ6Lyf2scxKsP+NFjfzxhGFxUAoerUY04GnR3am0//mCVyY3K0Dy28wtEr9s7jMF/p wvlw== X-Gm-Message-State: AOAM533EQdGw648He6UdBY/wNbDLmitrHMLH3BtlBZcKef9+aipt6xqH DaeVzH+3dD5AT3lzHxVWM103+GY0Q7I= X-Google-Smtp-Source: ABdhPJxl8GRB8CXvkcBoU18gETK+YX1uKzFqaPGvRngFZdaxLmhJzy8EY//YT+rIB4O3HRFbsEwrZQ== X-Received: by 2002:a05:6512:3054:: with SMTP id b20mr5643907lfb.316.1633464952276; Tue, 05 Oct 2021 13:15:52 -0700 (PDT) Received: from sovereign.. 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[37.110.65.23]) by smtp.gmail.com with ESMTPSA id a11sm2059979lfo.5.2021.10.05.13.15.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 13:15:52 -0700 (PDT) From: Dmitry Kozlyuk To: dev@dpdk.org Cc: Dmitry Kozlyuk , David Marchand , Olivier Matz , Ray Kinsella Date: Tue, 5 Oct 2021 23:15:44 +0300 Message-Id: <20211005201545.179902-2-dmitry.kozliuk@gmail.com> X-Mailer: git-send-email 2.29.3 In-Reply-To: <20211005201545.179902-1-dmitry.kozliuk@gmail.com> References: <20211005005516.132377-1-dmitry.kozliuk@gmail.com> <20211005201545.179902-1-dmitry.kozliuk@gmail.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v4 1/2] cmdline: make struct cmdline opaque X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Remove the definition of `struct cmdline` from public header. Deprecation notice: https://mails.dpdk.org/archives/dev/2020-September/183310.html Signed-off-by: Dmitry Kozlyuk Acked-by: David Marchand Acked-by: Olivier Matz --- doc/guides/rel_notes/deprecation.rst | 4 ---- doc/guides/rel_notes/release_21_11.rst | 2 ++ lib/cmdline/cmdline.h | 19 ------------------- lib/cmdline/cmdline_private.h | 8 +++++++- 4 files changed, 9 insertions(+), 24 deletions(-) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 76a4abfd6b..a404276fa2 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -275,10 +275,6 @@ Deprecation Notices * metrics: The function ``rte_metrics_init`` will have a non-void return in order to notify errors instead of calling ``rte_exit``. -* cmdline: ``cmdline`` structure will be made opaque to hide platform-specific - content. On Linux and FreeBSD, supported prior to DPDK 20.11, - original structure will be kept until DPDK 21.11. - * security: The functions ``rte_security_set_pkt_metadata`` and ``rte_security_get_userdata`` will be made inline functions and additional flags will be added in structure ``rte_security_ctx`` in DPDK 21.11. diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst index b55900936d..18377e5813 100644 --- a/doc/guides/rel_notes/release_21_11.rst +++ b/doc/guides/rel_notes/release_21_11.rst @@ -101,6 +101,8 @@ API Changes Also, make sure to start the actual text at the margin. ======================================================= +* cmdline: Made ``cmdline`` structure definition hidden on Linux and FreeBSD. + ABI Changes ----------- diff --git a/lib/cmdline/cmdline.h b/lib/cmdline/cmdline.h index c29762ddae..96674dfda2 100644 --- a/lib/cmdline/cmdline.h +++ b/lib/cmdline/cmdline.h @@ -7,10 +7,6 @@ #ifndef _CMDLINE_H_ #define _CMDLINE_H_ -#ifndef RTE_EXEC_ENV_WINDOWS -#include -#endif - #include #include @@ -27,23 +23,8 @@ extern "C" { #endif -#ifndef RTE_EXEC_ENV_WINDOWS - -struct cmdline { - int s_in; - int s_out; - cmdline_parse_ctx_t *ctx; - struct rdline rdl; - char prompt[RDLINE_PROMPT_SIZE]; - struct termios oldterm; -}; - -#else - struct cmdline; -#endif /* RTE_EXEC_ENV_WINDOWS */ - struct cmdline *cmdline_new(cmdline_parse_ctx_t *ctx, const char *prompt, int s_in, int s_out); void cmdline_set_prompt(struct cmdline *cl, const char *prompt); void cmdline_free(struct cmdline *cl); diff --git a/lib/cmdline/cmdline_private.h b/lib/cmdline/cmdline_private.h index a87c45275c..2e93674c66 100644 --- a/lib/cmdline/cmdline_private.h +++ b/lib/cmdline/cmdline_private.h @@ -11,6 +11,8 @@ #include #ifdef RTE_EXEC_ENV_WINDOWS #include +#else +#include #endif #include @@ -22,6 +24,7 @@ struct terminal { int is_console_input; int is_console_output; }; +#endif struct cmdline { int s_in; @@ -29,11 +32,14 @@ struct cmdline { cmdline_parse_ctx_t *ctx; struct rdline rdl; char prompt[RDLINE_PROMPT_SIZE]; +#ifdef RTE_EXEC_ENV_WINDOWS struct terminal oldterm; char repeated_char; WORD repeat_count; -}; +#else + struct termios oldterm; #endif +}; /* Disable buffering and echoing, save previous settings to oldterm. */ void terminal_adjust(struct cmdline *cl); From patchwork Tue Oct 5 20:15:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Kozlyuk X-Patchwork-Id: 100550 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 5600DA0C45; Tue, 5 Oct 2021 22:16:05 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 345A84139D; Tue, 5 Oct 2021 22:15:55 +0200 (CEST) Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) by mails.dpdk.org (Postfix) with ESMTP id AE22141262 for ; Tue, 5 Oct 2021 22:15:53 +0200 (CEST) Received: by mail-lf1-f52.google.com with SMTP id i4so922254lfv.4 for ; Tue, 05 Oct 2021 13:15:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=djI0UJmqk0VueJAchKjP+2UbIXAnR6kbAcRuiZPTkU4=; b=YbaWaIFmkXxLCQUlHscUM7ZcE6cqgnvKG54kEN9A/i1qs3ehnSb9DIENmhlEoMakJr Ws1h1h7UHymM5yZsiLIJ2mORhHHJW4gS8VHatqjceNnj3ghyEUhBbfUxGZZZKHcFWhbA ETtBTknTdbuZFKk56pDYoKJ4YgE/eWGSr/XzQjVX1FXlD2MlsjoGXRV91IC7Dn5OxoZ8 q1nxtY6tjpeKF9WVydaASq+rXUm/fOB9yWELLezgEbteBq8cLoQvOJhRv39myoBguMvY KZYs+zY603JNEN75JYH8GSomYFK7kgJr1WgeSWlbXs7RJuUBWFQ9cSZVLruwWTcttaXB WDag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=djI0UJmqk0VueJAchKjP+2UbIXAnR6kbAcRuiZPTkU4=; b=J5YmPtV9iO36fORf993aMw64b/Tuz+igd8XfiM6ilIu2QUMBMFyB3Cu2Iwgt0HUfB2 hZEu5+meGROkLBcpygShnOVtJKfu/jNaEUo7QAJrUYE9phnMyM3fMSiFITrIQJJauDYN cAAJXrgvPBuI1QswgJ7SZfTGjK7eh6J+D2uckjGrjoxAar0P+CzYZpdiNCP9+XU20pRb J74TWpnWzUjHsu3vHVT6gm4vmk4BZDUW6TMEanBu6vokrhidaxUM8257mIHqL4Lbl/AP o0n9/yVqL7U/jdVbYBhvK+EdPCfP7T6zPYtm3Gwrc5oqBqdh4sl/UaUtiiwKJ6ZNOCop tVBw== X-Gm-Message-State: AOAM531z+/NE5KR/fPKmoKSn69pdExI0esSAuHJimrSVMitcM8wvPZ4i lkMpKT4Kz5awklic0rzrZtHvrdWpCqs= X-Google-Smtp-Source: ABdhPJwaUcuaCndyzglYbdq/CniMhhFzwxjrpj1+QkuQcosQ2u2El8snhgR7v1cY9w+SuCx6edKAzA== X-Received: by 2002:a05:6512:238b:: with SMTP id c11mr5378064lfv.321.1633464952944; Tue, 05 Oct 2021 13:15:52 -0700 (PDT) Received: from sovereign.. 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[37.110.65.23]) by smtp.gmail.com with ESMTPSA id a11sm2059979lfo.5.2021.10.05.13.15.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 13:15:52 -0700 (PDT) From: Dmitry Kozlyuk To: dev@dpdk.org Cc: Dmitry Kozlyuk , Ali Alnubani , Gregory Etelson , David Marchand , Olivier Matz , Ray Kinsella Date: Tue, 5 Oct 2021 23:15:45 +0300 Message-Id: <20211005201545.179902-3-dmitry.kozliuk@gmail.com> X-Mailer: git-send-email 2.29.3 In-Reply-To: <20211005201545.179902-1-dmitry.kozliuk@gmail.com> References: <20211005005516.132377-1-dmitry.kozliuk@gmail.com> <20211005201545.179902-1-dmitry.kozliuk@gmail.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v4 2/2] cmdline: make struct rdline opaque X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hide struct rdline definition and some RDLINE_* constants in order to be able to change internal buffer sizes transparently to the user. Add new functions: * rdline_new(): allocate and initialize struct rdline. This function replaces rdline_init() and takes an extra parameter: opaque user data for the callbacks. * rdline_free(): deallocate struct rdline. * rdline_get_history_buffer_size(): for use in tests. * rdline_get_opaque(): to obtain user data in callback functions. Remove rdline_init() function from library headers and export list, because using it requires the knowledge of sizeof(struct rdline). Signed-off-by: Dmitry Kozlyuk --- app/test-cmdline/commands.c | 2 +- app/test/test_cmdline_lib.c | 22 ++++--- doc/guides/rel_notes/release_21_11.rst | 3 + lib/cmdline/cmdline.c | 3 +- lib/cmdline/cmdline_private.h | 49 +++++++++++++++ lib/cmdline/cmdline_rdline.c | 43 ++++++++++++- lib/cmdline/cmdline_rdline.h | 87 ++++++++++---------------- lib/cmdline/version.map | 8 ++- 8 files changed, 148 insertions(+), 69 deletions(-) diff --git a/app/test-cmdline/commands.c b/app/test-cmdline/commands.c index d732976f08..a13e1d1afd 100644 --- a/app/test-cmdline/commands.c +++ b/app/test-cmdline/commands.c @@ -297,7 +297,7 @@ cmd_get_history_bufsize_parsed(__rte_unused void *parsed_result, struct rdline *rdl = cmdline_get_rdline(cl); cmdline_printf(cl, "History buffer size: %zu\n", - sizeof(rdl->history_buf)); + rdline_get_history_buffer_size(rdl)); } cmdline_parse_token_string_t cmd_get_history_bufsize_tok = diff --git a/app/test/test_cmdline_lib.c b/app/test/test_cmdline_lib.c index d5a09b4541..24bc03fccb 100644 --- a/app/test/test_cmdline_lib.c +++ b/app/test/test_cmdline_lib.c @@ -83,18 +83,19 @@ test_cmdline_parse_fns(void) static int test_cmdline_rdline_fns(void) { - struct rdline rdl; + struct rdline *rdl = NULL; rdline_write_char_t *wc = &cmdline_write_char; rdline_validate_t *v = &valid_buffer; rdline_complete_t *c = &complete_buffer; - if (rdline_init(NULL, wc, v, c) >= 0) + rdl = rdline_new(NULL, v, c, NULL); + if (rdl != NULL) goto error; - if (rdline_init(&rdl, NULL, v, c) >= 0) + rdl = rdline_new(wc, NULL, c, NULL); + if (rdl != NULL) goto error; - if (rdline_init(&rdl, wc, NULL, c) >= 0) - goto error; - if (rdline_init(&rdl, wc, v, NULL) >= 0) + rdl = rdline_new(wc, v, NULL, NULL); + if (rdl != NULL) goto error; if (rdline_char_in(NULL, 0) >= 0) goto error; @@ -102,25 +103,30 @@ test_cmdline_rdline_fns(void) goto error; if (rdline_add_history(NULL, "history") >= 0) goto error; - if (rdline_add_history(&rdl, NULL) >= 0) + if (rdline_add_history(rdl, NULL) >= 0) goto error; if (rdline_get_history_item(NULL, 0) != NULL) goto error; /* void functions */ + rdline_get_history_buffer_size(NULL); + rdline_get_opaque(NULL); rdline_newline(NULL, "prompt"); - rdline_newline(&rdl, NULL); + rdline_newline(rdl, NULL); rdline_stop(NULL); rdline_quit(NULL); rdline_restart(NULL); rdline_redisplay(NULL); rdline_reset(NULL); rdline_clear_history(NULL); + rdline_free(NULL); + rdline_free(rdl); return 0; error: printf("Error: function accepted null parameter!\n"); + rdline_free(rdl); return -1; } diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst index 18377e5813..af11f4a656 100644 --- a/doc/guides/rel_notes/release_21_11.rst +++ b/doc/guides/rel_notes/release_21_11.rst @@ -103,6 +103,9 @@ API Changes * cmdline: Made ``cmdline`` structure definition hidden on Linux and FreeBSD. +* cmdline: Made ``rdline`` structure definition hidden. Functions are added + to dynamically allocate and free it, and to access user data in callbacks. + ABI Changes ----------- diff --git a/lib/cmdline/cmdline.c b/lib/cmdline/cmdline.c index a176d15130..8f1854cb0b 100644 --- a/lib/cmdline/cmdline.c +++ b/lib/cmdline/cmdline.c @@ -85,13 +85,12 @@ cmdline_new(cmdline_parse_ctx_t *ctx, const char *prompt, int s_in, int s_out) cl->ctx = ctx; ret = rdline_init(&cl->rdl, cmdline_write_char, cmdline_valid_buffer, - cmdline_complete_buffer); + cmdline_complete_buffer, cl); if (ret != 0) { free(cl); return NULL; } - cl->rdl.opaque = cl; cmdline_set_prompt(cl, prompt); rdline_newline(&cl->rdl, cl->prompt); diff --git a/lib/cmdline/cmdline_private.h b/lib/cmdline/cmdline_private.h index 2e93674c66..c2e906d8de 100644 --- a/lib/cmdline/cmdline_private.h +++ b/lib/cmdline/cmdline_private.h @@ -17,6 +17,49 @@ #include +#define RDLINE_BUF_SIZE 512 +#define RDLINE_PROMPT_SIZE 32 +#define RDLINE_VT100_BUF_SIZE 8 +#define RDLINE_HISTORY_BUF_SIZE BUFSIZ +#define RDLINE_HISTORY_MAX_LINE 64 + +enum rdline_status { + RDLINE_INIT, + RDLINE_RUNNING, + RDLINE_EXITED +}; + +struct rdline { + enum rdline_status status; + /* rdline bufs */ + struct cirbuf left; + struct cirbuf right; + char left_buf[RDLINE_BUF_SIZE+2]; /* reserve 2 chars for the \n\0 */ + char right_buf[RDLINE_BUF_SIZE]; + + char prompt[RDLINE_PROMPT_SIZE]; + unsigned int prompt_size; + + char kill_buf[RDLINE_BUF_SIZE]; + unsigned int kill_size; + + /* history */ + struct cirbuf history; + char history_buf[RDLINE_HISTORY_BUF_SIZE]; + int history_cur_line; + + /* callbacks and func pointers */ + rdline_write_char_t *write_char; + rdline_validate_t *validate; + rdline_complete_t *complete; + + /* vt100 parser */ + struct cmdline_vt100 vt100; + + /* opaque pointer */ + void *opaque; +}; + #ifdef RTE_EXEC_ENV_WINDOWS struct terminal { DWORD input_mode; @@ -57,4 +100,10 @@ ssize_t cmdline_read_char(struct cmdline *cl, char *c); __rte_format_printf(2, 0) int cmdline_vdprintf(int fd, const char *format, va_list op); +int rdline_init(struct rdline *rdl, + rdline_write_char_t *write_char, + rdline_validate_t *validate, + rdline_complete_t *complete, + void *opaque); + #endif diff --git a/lib/cmdline/cmdline_rdline.c b/lib/cmdline/cmdline_rdline.c index 2cb53e38f2..d92b1cda53 100644 --- a/lib/cmdline/cmdline_rdline.c +++ b/lib/cmdline/cmdline_rdline.c @@ -13,6 +13,7 @@ #include #include "cmdline_cirbuf.h" +#include "cmdline_private.h" #include "cmdline_rdline.h" static void rdline_puts(struct rdline *rdl, const char *buf); @@ -37,9 +38,10 @@ isblank2(char c) int rdline_init(struct rdline *rdl, - rdline_write_char_t *write_char, - rdline_validate_t *validate, - rdline_complete_t *complete) + rdline_write_char_t *write_char, + rdline_validate_t *validate, + rdline_complete_t *complete, + void *opaque) { if (!rdl || !write_char || !validate || !complete) return -EINVAL; @@ -47,10 +49,33 @@ rdline_init(struct rdline *rdl, rdl->validate = validate; rdl->complete = complete; rdl->write_char = write_char; + rdl->opaque = opaque; rdl->status = RDLINE_INIT; return cirbuf_init(&rdl->history, rdl->history_buf, 0, RDLINE_HISTORY_BUF_SIZE); } +struct rdline * +rdline_new(rdline_write_char_t *write_char, + rdline_validate_t *validate, + rdline_complete_t *complete, + void *opaque) +{ + struct rdline *rdl; + + rdl = malloc(sizeof(*rdl)); + if (rdline_init(rdl, write_char, validate, complete, opaque) < 0) { + free(rdl); + rdl = NULL; + } + return rdl; +} + +void +rdline_free(struct rdline *rdl) +{ + free(rdl); +} + void rdline_newline(struct rdline *rdl, const char *prompt) { @@ -564,6 +589,18 @@ rdline_get_history_item(struct rdline * rdl, unsigned int idx) return NULL; } +size_t +rdline_get_history_buffer_size(struct rdline *rdl) +{ + return sizeof(rdl->history_buf); +} + +void * +rdline_get_opaque(struct rdline *rdl) +{ + return rdl != NULL ? rdl->opaque : NULL; +} + int rdline_add_history(struct rdline * rdl, const char * buf) { diff --git a/lib/cmdline/cmdline_rdline.h b/lib/cmdline/cmdline_rdline.h index d2170293de..af66b70495 100644 --- a/lib/cmdline/cmdline_rdline.h +++ b/lib/cmdline/cmdline_rdline.h @@ -10,9 +10,7 @@ /** * This file is a small equivalent to the GNU readline library, but it * was originally designed for small systems, like Atmel AVR - * microcontrollers (8 bits). Indeed, we don't use any malloc that is - * sometimes not implemented (or just not recommended) on such - * systems. + * microcontrollers (8 bits). It only uses malloc() on object creation. * * Obviously, it does not support as many things as the GNU readline, * but at least it supports some interesting features like a kill @@ -31,6 +29,7 @@ */ #include +#include #include #include @@ -38,19 +37,6 @@ extern "C" { #endif -/* configuration */ -#define RDLINE_BUF_SIZE 512 -#define RDLINE_PROMPT_SIZE 32 -#define RDLINE_VT100_BUF_SIZE 8 -#define RDLINE_HISTORY_BUF_SIZE BUFSIZ -#define RDLINE_HISTORY_MAX_LINE 64 - -enum rdline_status { - RDLINE_INIT, - RDLINE_RUNNING, - RDLINE_EXITED -}; - struct rdline; typedef int (rdline_write_char_t)(struct rdline *rdl, char); @@ -60,52 +46,33 @@ typedef int (rdline_complete_t)(struct rdline *rdl, const char *buf, char *dstbuf, unsigned int dstsize, int *state); -struct rdline { - enum rdline_status status; - /* rdline bufs */ - struct cirbuf left; - struct cirbuf right; - char left_buf[RDLINE_BUF_SIZE+2]; /* reserve 2 chars for the \n\0 */ - char right_buf[RDLINE_BUF_SIZE]; - - char prompt[RDLINE_PROMPT_SIZE]; - unsigned int prompt_size; - - char kill_buf[RDLINE_BUF_SIZE]; - unsigned int kill_size; - - /* history */ - struct cirbuf history; - char history_buf[RDLINE_HISTORY_BUF_SIZE]; - int history_cur_line; - - /* callbacks and func pointers */ - rdline_write_char_t *write_char; - rdline_validate_t *validate; - rdline_complete_t *complete; - - /* vt100 parser */ - struct cmdline_vt100 vt100; - - /* opaque pointer */ - void *opaque; -}; - /** - * Init fields for a struct rdline. Call this only once at the beginning - * of your program. - * \param rdl A pointer to an uninitialized struct rdline + * Allocate and initialize a new rdline instance. + * + * \param rdl Receives a pointer to the allocated structure. * \param write_char The function used by the function to write a character * \param validate A pointer to the function to execute when the * user validates the buffer. * \param complete A pointer to the function to execute when the * user completes the buffer. + * \param opaque User data for use in the callbacks. + * + * \return 0 on success, negative errno-style code in failure. */ -int rdline_init(struct rdline *rdl, - rdline_write_char_t *write_char, - rdline_validate_t *validate, - rdline_complete_t *complete); +__rte_experimental +struct rdline *rdline_new(rdline_write_char_t *write_char, + rdline_validate_t *validate, + rdline_complete_t *complete, + void *opaque); +/** + * Free an rdline instance. + * + * \param rdl A pointer to an initialized struct rdline. + * If NULL, this function is a no-op. + */ +__rte_experimental +void rdline_free(struct rdline *rdl); /** * Init the current buffer, and display a prompt. @@ -194,6 +161,18 @@ void rdline_clear_history(struct rdline *rdl); */ char *rdline_get_history_item(struct rdline *rdl, unsigned int i); +/** + * Get maximum history buffer size. + */ +__rte_experimental +size_t rdline_get_history_buffer_size(struct rdline *rdl); + +/** + * Get the opaque pointer supplied on struct rdline creation. + */ +__rte_experimental +void *rdline_get_opaque(struct rdline *rdl); + #ifdef __cplusplus } #endif diff --git a/lib/cmdline/version.map b/lib/cmdline/version.map index 980adb4f23..b9bbb87510 100644 --- a/lib/cmdline/version.map +++ b/lib/cmdline/version.map @@ -57,7 +57,6 @@ DPDK_22 { rdline_clear_history; rdline_get_buffer; rdline_get_history_item; - rdline_init; rdline_newline; rdline_quit; rdline_redisplay; @@ -73,7 +72,14 @@ DPDK_22 { EXPERIMENTAL { global: + # added in 20.11 cmdline_get_rdline; + # added in 21.11 + rdline_new; + rdline_free; + rdline_get_history_buffer_size; + rdline_get_opaque; + local: *; };