From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Subject: [PATCH 04/12] utf8.c: add utf8_strnwidth() with the ability to skip ansi sequences Date: Sat, 16 Mar 2013 09:24:35 +0700 Message-ID: <1363400683-14813-5-git-send-email-pclouds@gmail.com> References: <1363400683-14813-1-git-send-email-pclouds@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Junio C Hamano , =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Sat Mar 16 03:25:49 2013 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UGgoe-0002QR-PG for gcvg-git-2@plane.gmane.org; Sat, 16 Mar 2013 03:25:49 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932150Ab3CPCZS convert rfc822-to-quoted-printable (ORCPT ); Fri, 15 Mar 2013 22:25:18 -0400 Received: from mail-pb0-f50.google.com ([209.85.160.50]:37525 "EHLO mail-pb0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755031Ab3CPCZR (ORCPT ); Fri, 15 Mar 2013 22:25:17 -0400 Received: by mail-pb0-f50.google.com with SMTP id up1so4521076pbc.9 for ; Fri, 15 Mar 2013 19:25:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references:mime-version:content-type:content-transfer-encoding; bh=FAmjmXAptSd+1e2IK74W1oZ1YEeBa+KB9oyT+1DvsG4=; b=tRgqwRUVmSWD5VrDwdOeyd6KGUxJ3I2jCvlL8MGNqnzuh0lWM0Sulke5gyeoysqU63 IVPOzm2R8DO6rw8W3OC6ID/vPoHDhSgPw/NEB5B4RUL5ZT2K87offKr0r8xMjVDm87QG u16rz1Be/bCxHvdFrT2MvGz+ium2PkP6IaQC9SK5eLnuKWCPm7kimXrpCfn3LXYWdl24 9o1e03xDYEdEQjdz2RXhkHR5Xsz6ULp5NmIS6QLhxrllUTdP5h50gOXF8b9XX1Cbqp3x 1Y0gyA5geHrITtuOEgnVzE9pKFrVaSGDVfO5Mdr624Kss3b+Iz8K5rCHC6l7xiOtFn4K wZnA== X-Received: by 10.68.213.7 with SMTP id no7mr21016527pbc.48.1363400716661; Fri, 15 Mar 2013 19:25:16 -0700 (PDT) Received: from lanh ([115.74.58.84]) by mx.google.com with ESMTPS id iv3sm11490693pbc.40.2013.03.15.19.25.13 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 15 Mar 2013 19:25:15 -0700 (PDT) Received: by lanh (sSMTP sendmail emulation); Sat, 16 Mar 2013 09:25:11 +0700 X-Mailer: git-send-email 1.8.2.83.gc99314b In-Reply-To: <1363400683-14813-1-git-send-email-pclouds@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Signed-off-by: Nguy=E1=BB=85n Th=C3=A1i Ng=E1=BB=8Dc Duy --- utf8.c | 20 ++++++++++++++------ utf8.h | 1 + 2 files changed, 15 insertions(+), 6 deletions(-) diff --git a/utf8.c b/utf8.c index 82c2ddf..38322a1 100644 --- a/utf8.c +++ b/utf8.c @@ -266,18 +266,26 @@ int utf8_width(const char **start, size_t *remain= der_p) * string, assuming that the string is utf8. Returns strlen() instead * if the string does not look like a valid utf8 string. */ -int utf8_strwidth(const char *string) +int utf8_strnwidth(const char *string, int len, int skip_ansi) { int width =3D 0; const char *orig =3D string; =20 - while (1) { - if (!string) - return strlen(orig); - if (!*string) - return width; + if (len =3D=3D -1) + len =3D strlen(string); + while (string && string < orig + len) { + int skip; + while (skip_ansi && + (skip =3D display_mode_esc_sequence_len(string))) + string +=3D skip; width +=3D utf8_width(&string, NULL); } + return string ? width : len; +} + +int utf8_strwidth(const char *string) +{ + return utf8_strnwidth(string, -1, 0); } =20 int is_utf8(const char *text) diff --git a/utf8.h b/utf8.h index 501b2bd..a556932 100644 --- a/utf8.h +++ b/utf8.h @@ -4,6 +4,7 @@ typedef unsigned int ucs_char_t; /* assuming 32bit int */ =20 int utf8_width(const char **start, size_t *remainder_p); +int utf8_strnwidth(const char *string, int len, int skip_ansi); int utf8_strwidth(const char *string); int is_utf8(const char *text); int is_encoding_utf8(const char *name); --=20 1.8.2.83.gc99314b