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string_util: Make use of std::string_view and add bounds checking

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Makes use of std::string_view in StringFromFixedZeroTerminatedBuffer and add bounds checking
This commit is contained in:
Morph 2021-10-14 13:11:08 -04:00
parent 3ffff78a27
commit 0d6057b2fa
2 changed files with 5 additions and 5 deletions
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8
src/common/string_util.cpp
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@ -180,12 +180,12 @@ std::wstring UTF8ToUTF16W(const std::string& input) {
#endif #endif
std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t max_len) { std::string StringFromFixedZeroTerminatedBuffer(std::string_view buffer, std::size_t max_len) {
std::size_t len = 0; std::size_t len = 0;
while (len < max_len && buffer[len] != '\0') while (len < buffer.length() && len < max_len && buffer[len] != '\0') {
++len; ++len;
}
return std::string(buffer, len); return std::string(buffer.begin(), buffer.begin() + len);
} }
std::u16string UTF16StringFromFixedZeroTerminatedBuffer(std::u16string_view buffer, std::u16string UTF16StringFromFixedZeroTerminatedBuffer(std::u16string_view buffer,

2
src/common/string_util.h
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@ -63,7 +63,7 @@ template <typename InIt>
* Creates a std::string from a fixed-size NUL-terminated char buffer. If the buffer isn't * Creates a std::string from a fixed-size NUL-terminated char buffer. If the buffer isn't
* NUL-terminated then the string ends at max_len characters. * NUL-terminated then the string ends at max_len characters.
*/ */
[[nodiscard]] std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, [[nodiscard]] std::string StringFromFixedZeroTerminatedBuffer(std::string_view buffer,
std::size_t max_len); std::size_t max_len);
/** /**