ZYM/BH-Bookstore-2023
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设置modify不允许出现重复字段

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ZhuangYumin
2023-12-14 14:16:42 +00:00
parent 9c3643d5a4
commit cc5154c8d3
1 changed files with 15 additions and 0 deletions
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15
backend/src/lexer.cpp
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@ -347,18 +347,33 @@ bool CommandModifyLexer(const std::string &command, std::string &ISBN,
author = ""; author = "";
keyword = ""; keyword = "";
price = -1; price = -1;
bool has_ISBN = false;
bool has_name = false;
bool has_author = false;
bool has_keyword = false;
bool has_price = false;
while (ss >> token) { while (ss >> token) {
if (token[1] == 'I') { if (token[1] == 'I') {
if (has_ISBN) return false;
has_ISBN = true;
// debugPrint("ISBN's token is ", token); // debugPrint("ISBN's token is ", token);
ISBN = token.substr(6); ISBN = token.substr(6);
} else if (token[1] == 'n') { } else if (token[1] == 'n') {
if (has_name) return false;
has_name = true;
name = token.substr(6 + 1, token.size() - 7 - 1); name = token.substr(6 + 1, token.size() - 7 - 1);
} else if (token[1] == 'a') { } else if (token[1] == 'a') {
if (has_author) return false;
has_author = true;
author = token.substr(8 + 1, token.size() - 9 - 1); author = token.substr(8 + 1, token.size() - 9 - 1);
} else if (token[1] == 'k') { } else if (token[1] == 'k') {
if (has_keyword) return false;
has_keyword = true;
keyword = token.substr(9 + 1, token.size() - 10 - 1); keyword = token.substr(9 + 1, token.size() - 10 - 1);
if (keyword.length() > 60) return false; if (keyword.length() > 60) return false;
} else if (token[1] == 'p') { } else if (token[1] == 'p') {
if (has_price) return false;
has_price = true;
price = std::stod(token.substr(7)); price = std::stod(token.substr(7));
} else } else
return false; return false;