mirror of https://github.com/AxioDL/metaforce.git
43 lines
1.7 KiB
C++
43 lines
1.7 KiB
C++
#pragma once
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#include <algorithm>
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#include <cctype>
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#include <string>
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namespace metaforce {
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class CInputStream;
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class CStringExtras {
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public:
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// Checks if the provided views into string data can be considered equal or not based on
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// whether or not all their characters are equal to one another in a character insensitive manner.
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//
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// NOTE: This differs slightly from the actual version of this function within the game executable
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// in order to better accomodate string views and potentially non-null-terminated string data.
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//
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// In the game executable, the function essentially behaves like strcasecmp in that it returns
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// an int indicating whether or not the first argument is less than, equal to,
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// or greater than the second argument. Given no usages in the code depend on the less than or
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// greater than cases, but rather just care about whether or not the strings are equal to one
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// another, this is a safe change to make.
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//
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static bool CompareCaseInsensitive(std::string_view a, std::string_view b) {
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return std::equal(a.begin(), a.end(), b.begin(), b.end(),
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[](char lhs, char rhs) { return std::tolower(lhs) == std::tolower(rhs); });
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}
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static int IndexOfSubstring(std::string_view haystack, std::string_view needle) {
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std::string str(haystack);
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std::transform(str.begin(), str.end(), str.begin(),
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[](char c) { return std::tolower(static_cast<unsigned char>(c)); });
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const std::string::size_type s = str.find(needle);
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if (s == std::string::npos) {
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return -1;
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}
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return s;
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}
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static std::string ReadString(CInputStream& in);
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};
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} // namespace metaforce
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