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* admin/merge-gnulib (GNULIB_MODULES): * cross/lib/getopt-pfx-core.h (optind): * cross/lib/limits.in.h (BOOL_WIDTH): * cross/lib/math.in.h: * cross/lib/stpncpy.c (__stpncpy): * cross/lib/string.in.h: * lib/getopt-pfx-core.h (optind): * lib/gnulib.mk.in (ANDROID_MIN_SDK): (GL_COND_OBJ_STDIO_READ_CONDITION): (LIBS): (NDK_BUILD_AR): (REPLACE__EXIT): (libgnu_a_SOURCES): * lib/limits.in.h (BOOL_WIDTH): * lib/math.in.h: * lib/stpncpy.c (__stpncpy): * lib/string.in.h: * m4/assert_h.m4 (gl_ASSERT_H): * m4/fdopendir.m4 (gl_FUNC_FDOPENDIR): * m4/getdelim.m4 (gl_FUNC_GETDELIM): * m4/getline.m4 (gl_FUNC_GETLINE): * m4/gnulib-common.m4 (gl_COMMON_BODY): (gl_CONDITIONAL_HEADER): (gl_CHECK_FUNCS_ANDROID): * m4/gnulib-comp.m4 (gl_EARLY): (gl_INIT): (gl_FILE_LIST): * m4/limits-h.m4: * m4/lstat.m4 (gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK): * m4/malloc.m4 (_AC_FUNC_MALLOC_IF): * m4/printf.m4 (gl_PRINTF_SIZES_C99): (gl_PRINTF_INFINITE): (gl_PRINTF_INFINITE_LONG_DOUBLE): (gl_PRINTF_DIRECTIVE_A): (gl_PRINTF_DIRECTIVE_F): (gl_PRINTF_FLAG_ZERO): (gl_SNPRINTF_PRESENCE): (gl_SNPRINTF_DIRECTIVE_N): (gl_VSNPRINTF_ZEROSIZE_C99): * m4/pselect.m4 (gl_FUNC_PSELECT): * m4/readlink.m4 (gl_FUNC_READLINK): * m4/realloc.m4 (_AC_FUNC_REALLOC_IF): * m4/signbit.m4 (gl_SIGNBIT): * m4/stpncpy.m4 (gl_FUNC_STPNCPY): * m4/symlink.m4 (gl_FUNC_SYMLINK): Add gnulib module stpncpy. * src/android.c: Include string.h.
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/* Copyright (C) 1993, 1995-1997, 2002-2003, 2005-2007, 2009-2023 Free Software
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* Foundation, Inc.
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NOTE: The canonical source of this file is maintained with the GNU C Library.
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Bugs can be reported to bug-glibc@gnu.org.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* This is almost copied from strncpy.c, written by Torbjorn Granlund. */
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#include <config.h>
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/* Specification. */
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#include <string.h>
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#ifndef weak_alias
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# define __stpncpy stpncpy
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#endif
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/* Copy no more than N bytes of SRC to DST, returning a pointer past the
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last non-NUL byte written into DST. */
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char *
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(__stpncpy) (char *dest, const char *src, size_t n)
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{
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char c;
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char *s = dest;
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if (n >= 4)
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{
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size_t n4 = n >> 2;
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for (;;)
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{
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c = *src++;
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*dest++ = c;
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if (c == '\0')
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break;
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c = *src++;
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*dest++ = c;
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if (c == '\0')
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break;
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c = *src++;
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*dest++ = c;
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if (c == '\0')
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break;
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c = *src++;
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*dest++ = c;
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if (c == '\0')
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break;
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if (--n4 == 0)
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goto last_chars;
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}
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n -= dest - s;
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goto zero_fill;
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}
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last_chars:
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n &= 3;
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if (n == 0)
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return dest;
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for (;;)
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{
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c = *src++;
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--n;
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*dest++ = c;
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if (c == '\0')
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break;
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if (n == 0)
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return dest;
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}
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zero_fill:
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while (n-- > 0)
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dest[n] = '\0';
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return dest - 1;
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}
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#ifdef weak_alias
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weak_alias (__stpncpy, stpncpy)
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#endif
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