7 #include "widestring.h"
9 static iconv_t ucs4_iconv, ucs4_reverse_iconv;
10 static bool iconv_initialized = false;
12 void ensure_iconv_initialized()
14 if (iconv_initialized) {
17 #if __BYTE_ORDER == __LITTLE_ENDIAN
18 ucs4_iconv = iconv_open("ucs-4le", "utf-8");
19 ucs4_reverse_iconv = iconv_open("utf-8", "ucs-4le");
21 ucs4_iconv = iconv_open("ucs-4be", "utf-8");
22 ucs4_reverse_iconv = iconv_open("utf-8", "ucs-4be");
25 iconv_initialized = true;
28 widestring::widestring()
32 widestring::widestring(const char *from)
37 widestring::widestring(const std::string &from)
42 widestring::widestring(const std::wstring &from)
47 void widestring::operator= (const char *from)
49 ensure_iconv_initialized();
51 unsigned bytes = std::strlen(from);
52 char *from_buf = strdup(from);
53 wchar_t *to_buf = new wchar_t[bytes + 1];
55 char *inptr = from_buf, *outptr = reinterpret_cast<char *> (to_buf);
57 size_t in_left = bytes;
58 size_t out_left = bytes * sizeof(wchar_t);
60 size_t ret = iconv(ucs4_iconv, NULL, NULL, &outptr, &out_left);
61 if (ret == (size_t)(-1)) {
62 throw std::runtime_error("Error in iconv during initialization");
65 ret = iconv(ucs4_iconv, &inptr, &in_left, &outptr, &out_left);
66 if (ret == (size_t)(-1)) {
68 throw std::runtime_error("Error in iconv during conversion");
71 erase(begin(), end());
72 std::copy(to_buf, reinterpret_cast<wchar_t *> (outptr), std::back_inserter(*this));
78 std::string widestring::to_utf8() const
80 ensure_iconv_initialized();
82 wchar_t *from_buf = wcsdup(c_str());
83 size_t out_max_size = size() * 6;
84 char *to_buf = new char[out_max_size];
86 char *inptr = reinterpret_cast<char *>(from_buf), *outptr = to_buf;
88 size_t in_left = size() * sizeof(wchar_t);
89 size_t out_left = out_max_size;
91 size_t ret = iconv(ucs4_reverse_iconv, NULL, NULL, &outptr, &out_left);
92 if (ret == (size_t)(-1)) {
93 throw std::runtime_error("Error in iconv during initialization");
96 ret = iconv(ucs4_reverse_iconv, &inptr, &in_left, &outptr, &out_left);
97 if (ret == (size_t)(-1)) {
99 throw std::runtime_error("Error in iconv during conversion");
102 std::string utf8(to_buf, outptr);