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LibC: Implement mbsnrtowcs
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parent
552ae77f0d
commit
89afd4d063
2 changed files with 63 additions and 5 deletions
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@ -534,7 +534,7 @@ size_t wcsnrtombs(char* dest, const wchar_t** src, size_t nwc, size_t len, mbsta
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return written;
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}
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size_t mbsrtowcs(wchar_t* dst, const char** src, size_t len, mbstate_t* ps)
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size_t mbsnrtowcs(wchar_t* dst, const char** src, size_t nms, size_t len, mbstate_t* ps)
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{
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static mbstate_t _anonymous_state = {};
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@ -543,8 +543,21 @@ size_t mbsrtowcs(wchar_t* dst, const char** src, size_t len, mbstate_t* ps)
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size_t written = 0;
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while (written < len || !dst) {
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// End of source buffer, no incomplete character.
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// src continues to point to the next byte.
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if (nms == 0) {
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return written;
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}
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// Convert next multibyte to wchar.
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size_t ret = mbrtowc(dst, *src, MB_LEN_MAX, ps);
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size_t ret = mbrtowc(dst, *src, nms, ps);
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// Multibyte sequence is incomplete.
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if (ret == -2ul) {
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// Point just past the last processed byte.
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*src += nms;
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return written;
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}
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// Multibyte sequence is invalid.
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if (ret == -1ul) {
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@ -559,6 +572,7 @@ size_t mbsrtowcs(wchar_t* dst, const char** src, size_t len, mbstate_t* ps)
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}
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*src += ret;
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nms -= ret;
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written += 1;
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if (dst)
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dst += 1;
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@ -588,9 +602,14 @@ size_t wcsrtombs(char* dest, const wchar_t** src, size_t len, mbstate_t* ps)
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return wcsnrtombs(dest, src, SIZE_MAX, len, ps);
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}
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size_t mbsnrtowcs(wchar_t*, const char**, size_t, size_t, mbstate_t*)
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size_t mbsrtowcs(wchar_t* dst, const char** src, size_t len, mbstate_t* ps)
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{
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dbgln("FIXME: Implement mbsnrtowcs()");
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TODO();
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static mbstate_t anonymous_state = {};
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if (ps == nullptr)
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ps = &anonymous_state;
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// SIZE_MAX is as close as we are going to get to "unlimited".
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return mbsnrtowcs(dst, src, SIZE_MAX, len, ps);
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}
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}
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