From 4a36ce8554cf078dee9d708ebbb8dcee32d237d2 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Tue, 9 Jan 2007 14:08:40 +0000 Subject: [PATCH] New modules 'unistr/u8-chr', 'unistr/u16-chr', 'unistr/u32-chr'. --- lib/unistr/u16-chr.c | 60 +++++++++++++++++++++++++++++++++ lib/unistr/u32-chr.c | 34 +++++++++++++++++++ lib/unistr/u8-chr.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++ modules/unistr/u16-chr | 24 +++++++++++++ modules/unistr/u32-chr | 23 +++++++++++++ modules/unistr/u8-chr | 24 +++++++++++++ 6 files changed, 256 insertions(+) create mode 100644 lib/unistr/u16-chr.c create mode 100644 lib/unistr/u32-chr.c create mode 100644 lib/unistr/u8-chr.c create mode 100644 modules/unistr/u16-chr create mode 100644 modules/unistr/u32-chr create mode 100644 modules/unistr/u8-chr diff --git a/lib/unistr/u16-chr.c b/lib/unistr/u16-chr.c new file mode 100644 index 000000000..6ca1458b6 --- /dev/null +++ b/lib/unistr/u16-chr.c @@ -0,0 +1,60 @@ +/* Search character in piece of UTF-16 string. + Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include + +/* Specification. */ +#include "unistr.h" + +#include "ucs4-utf16.h" + +uint16_t * +u16_chr (const uint16_t *s, size_t n, ucs4_t uc) +{ + uint16_t c[2]; + + if (uc < 0x10000) + { + uint16_t c0 = uc; + + for (; n > 0; s++, n--) + { + if (*s == c0) + return (uint16_t *) s; + } + } + else + switch (u16_uctomb_aux (c, uc, 2)) + { + case 2: + if (n > 1) + { + uint16_t c0 = c[0]; + uint16_t c1 = c[1]; + + for (n--; n > 0; s++, n--) + { + if (*s == c0 && s[1] == c1) + return (uint16_t *) s; + } + } + break; + } + return NULL; +} diff --git a/lib/unistr/u32-chr.c b/lib/unistr/u32-chr.c new file mode 100644 index 000000000..1d6b195ee --- /dev/null +++ b/lib/unistr/u32-chr.c @@ -0,0 +1,34 @@ +/* Search character in piece of UTF-32 string. + Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include + +/* Specification. */ +#include "unistr.h" + +uint32_t * +u32_chr (const uint32_t *s, size_t n, ucs4_t uc) +{ + for (; n > 0; s++, n--) + { + if (*s == uc) + return (uint32_t *) s; + } + return NULL; +} diff --git a/lib/unistr/u8-chr.c b/lib/unistr/u8-chr.c new file mode 100644 index 000000000..c94ce6666 --- /dev/null +++ b/lib/unistr/u8-chr.c @@ -0,0 +1,91 @@ +/* Search character in piece of UTF-8 string. + Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include + +/* Specification. */ +#include "unistr.h" + +#include "ucs4-utf8.h" + +uint8_t * +u8_chr (const uint8_t *s, size_t n, ucs4_t uc) +{ + uint8_t c[6]; + + if (uc < 0x80) + { + uint8_t c0 = uc; + + for (; n > 0; s++, n--) + { + if (*s == c0) + return (uint8_t *) s; + } + } + else + switch (u8_uctomb_aux (c, uc, 6)) + { + case 2: + if (n > 1) + { + uint8_t c0 = c[0]; + uint8_t c1 = c[1]; + + for (n--; n > 0; s++, n--) + { + if (*s == c0 && s[1] == c1) + return (uint8_t *) s; + } + } + break; + + case 3: + if (n > 2) + { + uint8_t c0 = c[0]; + uint8_t c1 = c[1]; + uint8_t c2 = c[2]; + + for (n -= 2; n > 0; s++, n--) + { + if (*s == c0 && s[1] == c1 && s[2] == c2) + return (uint8_t *) s; + } + } + break; + + case 4: + if (n > 3) + { + uint8_t c0 = c[0]; + uint8_t c1 = c[1]; + uint8_t c2 = c[2]; + uint8_t c3 = c[3]; + + for (n -= 3; n > 0; s++, n--) + { + if (*s == c0 && s[1] == c1 && s[2] == c2 && s[3] == c3) + return (uint8_t *) s; + } + } + break; + } + return NULL; +} diff --git a/modules/unistr/u16-chr b/modules/unistr/u16-chr new file mode 100644 index 000000000..d4e9fe368 --- /dev/null +++ b/modules/unistr/u16-chr @@ -0,0 +1,24 @@ +Description: +Search character in piece of UTF-16 string. + +Files: +lib/unistr/u16-chr.c + +Depends-on: +unistr/base +ucs4-utf16 + +configure.ac: + +Makefile.am: +lib_SOURCES += unistr/u16-chr.c + +Include: +"unistr.h" + +License: +LGPL + +Maintainer: +Bruno Haible + diff --git a/modules/unistr/u32-chr b/modules/unistr/u32-chr new file mode 100644 index 000000000..101c1b722 --- /dev/null +++ b/modules/unistr/u32-chr @@ -0,0 +1,23 @@ +Description: +Search character in piece of UTF-32 string. + +Files: +lib/unistr/u32-chr.c + +Depends-on: +unistr/base + +configure.ac: + +Makefile.am: +lib_SOURCES += unistr/u32-chr.c + +Include: +"unistr.h" + +License: +LGPL + +Maintainer: +Bruno Haible + diff --git a/modules/unistr/u8-chr b/modules/unistr/u8-chr new file mode 100644 index 000000000..09f2799ea --- /dev/null +++ b/modules/unistr/u8-chr @@ -0,0 +1,24 @@ +Description: +Search character in piece of UTF-8 string. + +Files: +lib/unistr/u8-chr.c + +Depends-on: +unistr/base +ucs4-utf8 + +configure.ac: + +Makefile.am: +lib_SOURCES += unistr/u8-chr.c + +Include: +"unistr.h" + +License: +LGPL + +Maintainer: +Bruno Haible + -- 2.11.0