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string_util: Remove unnecessary std::string instance in TabsToSpaces()
We can just use the variant of std::string's replace() function that can replace an occurrence with N copies of the same character, eliminating the need to allocate a std::string containing a buffer of spaces.
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c994cdc532
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cd46b267f5
2 changed files with 7 additions and 8 deletions
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@ -168,15 +168,14 @@ void SplitString(const std::string& str, const char delim, std::vector<std::stri
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output.pop_back();
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}
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std::string TabsToSpaces(int tab_size, const std::string& in) {
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const std::string spaces(tab_size, ' ');
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std::string out(in);
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std::string TabsToSpaces(int tab_size, std::string in) {
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size_t i = 0;
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while (out.npos != (i = out.find('\t')))
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out.replace(i, 1, spaces);
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return out;
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while ((i = in.find('\t')) != std::string::npos) {
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in.replace(i, 1, tab_size, ' ');
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}
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return in;
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}
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std::string ReplaceAll(std::string result, const std::string& src, const std::string& dest) {
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@ -57,7 +57,7 @@ static bool TryParse(const std::string& str, N* const output) {
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return false;
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}
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std::string TabsToSpaces(int tab_size, const std::string& in);
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std::string TabsToSpaces(int tab_size, std::string in);
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void SplitString(const std::string& str, char delim, std::vector<std::string>& output);
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