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Current Path: /usr/src/contrib/xz/src/common

usr / src / contrib / xz / src / common /

📁 ..
📄 mythread.h(11.77 KB)
📄 sysdefs.h(4.8 KB)
📄 tuklib_common.h(1.86 KB)
📄 tuklib_config.h(121 B)
📄 tuklib_cpucores.c(2.3 KB)
📄 tuklib_cpucores.h(606 B)
📄 tuklib_exit.c(1.51 KB)
📄 tuklib_exit.h(706 B)
📄 tuklib_gettext.h(1.04 KB)
📄 tuklib_integer.h(16.67 KB)
📄 tuklib_mbstr.h(2.81 KB)
📄 tuklib_mbstr_fw.c(745 B)
📄 tuklib_mbstr_width.c(1.48 KB)
📄 tuklib_open_stdxxx.c(1.43 KB)
📄 tuklib_open_stdxxx.h(647 B)
📄 tuklib_physmem.c(5.65 KB)
📄 tuklib_physmem.h(763 B)
📄 tuklib_progname.c(1.11 KB)
📄 tuklib_progname.h(817 B)

Editing: tuklib_mbstr_width.c

///////////////////////////////////////////////////////////////////////////////
//
/// \file       tuklib_mbstr_width.c
/// \brief      Calculate width of a multibyte string
//
//  Author:     Lasse Collin
//
//  This file has been put into the public domain.
//  You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////

#include "tuklib_mbstr.h"
#include <string.h>

#if defined(HAVE_MBRTOWC) && defined(HAVE_WCWIDTH)
#	include <wchar.h>
#endif

extern size_t
tuklib_mbstr_width(const char *str, size_t *bytes)
{
	const size_t len = strlen(str);
	if (bytes != NULL)
		*bytes = len;

#if !(defined(HAVE_MBRTOWC) && defined(HAVE_WCWIDTH))
	// In single-byte mode, the width of the string is the same
	// as its length.
	return len;

#else
	mbstate_t state;
	memset(&state, 0, sizeof(state));

size_t width = 0;
	size_t i = 0;

// Convert one multibyte character at a time to wchar_t
	// and get its width using wcwidth().
	while (i < len) {
		wchar_t wc;
		const size_t ret = mbrtowc(&wc, str + i, len - i, &state);
		if (ret < 1 || ret > len)
			return (size_t)-1;

i += ret;

const int wc_width = wcwidth(wc);
		if (wc_width < 0)
			return (size_t)-1;

width += (size_t)wc_width;
	}

// Require that the string ends in the initial shift state.
	// This way the caller can be combine the string with other
	// strings without needing to worry about the shift states.
	if (!mbsinit(&state))
		return (size_t)-1;

return width;
#endif
}

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Editing: tuklib_mbstr_width.c

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