From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Sun, 18 Dec 2011 22:34:01 +0100 Subject: [U-Boot] [PATCH 05/15] common/main.c: Fix function readline In-Reply-To: <1324244051-25756-1-git-send-email-pali.rohar@gmail.com> References: <1778406.ezGto4lKnu@pali-elitebook> <1324244051-25756-1-git-send-email-pali.rohar@gmail.com> Message-ID: <1324244051-25756-5-git-send-email-pali.rohar@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de * Ignore ANSI escape codes for moving cursor, which are generated by keyboard Signed-off-by: Pali Roh?r --- common/main.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/common/main.c b/common/main.c index e96c95a..e7b5516 100644 --- a/common/main.c +++ b/common/main.c @@ -958,6 +958,7 @@ int readline_into_buffer (const char *const prompt, char * buffer) int n = 0; /* buffer index */ int plen = 0; /* prompt length */ int col; /* output column cnt */ + int esc = 0; /* ansi escape char */ char c; /* print prompt */ @@ -1024,7 +1025,57 @@ int readline_into_buffer (const char *const prompt, char * buffer) p=delete_char(p_buf, p, &col, &n, plen); continue; + case '\e': /* ANSI escape char */ + esc = 1; + continue; + default: + + /* + * Check for ANSI escape chars + */ + if (esc == 0 && c == '\e') { + esc = 1; + continue; + } else if (esc == 1) { + if (c == '[') { + esc = 2; + continue; + } + if (n < CONFIG_SYS_CBSIZE-2) { + ++n; + *p++ = '\e'; + putc('\e'); + } + esc = 0; + } else if (esc == 2 || esc == 3) { + if (esc == 2 && c == '1') { + esc = 3; + continue; + } + /* Ignore ANSI escape sequences */ + /* generated by keyboard */ + /* \e [ 1 A-D and \e [ A-D */ + if (c >= 'A' && c <= 'D') { + esc = 0; + continue; + } + if (esc == 2 && n < CONFIG_SYS_CBSIZE-3) { + n += 2; + *p++ = '\e'; + *p++ = '['; + puts("\e["); + } else if (esc == 3 && + n < CONFIG_SYS_CBSIZE-4) { + n += 3; + *p++ = '\e'; + *p++ = '['; + *p++ = '1'; + puts("\e[1"); + } + esc = 0; + } + /* * Must be a normal character then */ -- 1.7.5.4