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AK: Add StringView::to_int()
This is a shameless copy-paste of String::to_int(). We should find some way to share this code between String and StringView instead of having two duplicate copies like this.
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@ -92,6 +92,7 @@ public:
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static String repeated(char, int count);
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bool matches(const StringView& pattern, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
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// FIXME: These should be shared between String and StringView somehow!
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int to_int(bool& ok) const;
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unsigned to_uint(bool& ok) const;
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@ -66,6 +66,34 @@ StringView StringView::substring_view_starting_after_substring(const StringView&
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return { remaining_characters, remaining_length };
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}
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int StringView::to_int(bool& ok) const
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{
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bool negative = false;
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int value = 0;
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int i = 0;
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if (is_empty()) {
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ok = false;
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return 0;
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}
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if (characters_without_null_termination()[0] == '-') {
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i++;
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negative = true;
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}
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for (; i < length(); i++) {
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if (characters_without_null_termination()[i] < '0' || characters_without_null_termination()[i] > '9') {
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ok = false;
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return 0;
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}
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value = value * 10;
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value += characters_without_null_termination()[i] - '0';
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}
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ok = true;
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return negative ? -value : value;
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}
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unsigned StringView::to_uint(bool& ok) const
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{
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unsigned value = 0;
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@ -41,7 +41,10 @@ public:
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StringView substring_view(int start, int length) const;
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Vector<StringView> split_view(char) const;
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// FIXME: These should be shared between String and StringView somehow!
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unsigned to_uint(bool& ok) const;
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int to_int(bool& ok) const;
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// Create a new substring view of this string view, starting either at the beginning of
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// the given substring view, or after its end, and continuing until the end of this string
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