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string_util: Implement buffer to UTF-16 string helper function
Needed as most all software keyboard functions use fixed-length UTF16 string buffers.
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2 changed files with 17 additions and 0 deletions
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@ -214,6 +214,15 @@ std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t
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return std::string(buffer, len);
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}
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std::u16string UTF16StringFromFixedZeroTerminatedBuffer(const char16_t* buffer,
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std::size_t max_len) {
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std::size_t len = 0;
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while (len < max_len && buffer[len] != '\0')
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++len;
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return std::u16string(buffer, len);
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}
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const char* TrimSourcePath(const char* path, const char* root) {
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const char* p = path;
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@ -66,6 +66,14 @@ bool ComparePartialString(InIt begin, InIt end, const char* other) {
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*/
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std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t max_len);
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/**
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* Creates a UTF-16 std::u16string from a fixed-size NUL-terminated char buffer. If the buffer isn't
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* NUL-terminated, then the string ends at the greatest multiple of two less then or equal to
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* max_len_bytes.
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*/
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std::u16string UTF16StringFromFixedZeroTerminatedBuffer(const char16_t* buffer,
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std::size_t max_len);
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/**
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* Attempts to trim an arbitrary prefix from `path`, leaving only the part starting at `root`. It's
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* intended to be used to strip a system-specific build directory from the `__FILE__` macro,
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