mirror of
https://github.com/uroni/urbackup_backend.git
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853 lines
19 KiB
C++
853 lines
19 KiB
C++
#include "sqlgen.h"
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#include "../stringtools.h"
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#include <regex>
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#include <iostream>
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enum CPPFileTokenType
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{
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CPPFileTokenType_Code,
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CPPFileTokenType_Comment
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};
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struct CPPToken
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{
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CPPToken(const std::string& data, CPPFileTokenType type)
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: data(data), type(type)
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{
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}
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std::string data;
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CPPFileTokenType type;
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};
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enum TokenizeState
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{
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TokenizeState_None,
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TokenizeState_CommentMultiline,
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TokenizeState_CommentSingleline
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};
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std::vector<CPPToken> tokenizeFile(std::string &cppfile)
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{
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std::regex find_comments("(/\\*(\\S|\\s)*?\\*/)|(//.*)", std::regex::ECMAScript);
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auto comments_begin=std::regex_iterator<std::string::iterator>(cppfile.begin(), cppfile.end(), find_comments);
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auto comments_end=std::regex_iterator<std::string::iterator>();
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std::vector<CPPToken> tokens;
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size_t lastPos=0;
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for(auto i=comments_begin;i!=comments_end;++i)
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{
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auto m=*i;
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size_t pos=m.position(0);
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if(lastPos<pos)
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{
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tokens.push_back(CPPToken(cppfile.substr(lastPos, pos-lastPos), CPPFileTokenType_Code));
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lastPos=pos;
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}
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tokens.push_back(CPPToken(m.str(), CPPFileTokenType_Comment));
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lastPos+=m.length();
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}
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if(lastPos<cppfile.size())
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{
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tokens.push_back(CPPToken(cppfile.substr(lastPos), CPPFileTokenType_Code));
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}
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return tokens;
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}
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struct AnnotatedCode
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{
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AnnotatedCode(std::map<std::string, std::string> annotations, std::string code)
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: annotations(annotations), code(code)
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{
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}
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AnnotatedCode(std::string code)
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: code(code)
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{
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}
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std::map<std::string, std::string> annotations;
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std::string code;
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};
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std::string cleanup_annotation(const std::string& annotation)
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{
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int state=0;
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std::string ret;
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for(size_t i=0;i<annotation.size();++i)
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{
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if(state==0)
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{
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if(annotation[i]=='\n' || annotation[i]=='\r')
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{
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state=1;
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}
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}
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else if(state==1)
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{
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if(annotation[i]!=' ' && annotation[i]!='*' && annotation[i]!='\n' && annotation[i]!='\t' )
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{
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state=0;
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}
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}
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if(annotation[i]=='\n')
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{
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ret+=" ";
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}
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if(state==0)
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{
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ret+=annotation[i];
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}
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}
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return ret;
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};
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std::string extractFirstFunction(const std::string& data)
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{
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int c=0;
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bool was_in_function=false;
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for(size_t i=0;i<data.size();++i)
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{
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if(data[i]=='{') ++c;
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if(data[i]=='}') --c;
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if(c>0)
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{
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was_in_function=true;
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}
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if(c==0 && was_in_function)
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{
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return data.substr(0, i+1);
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}
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}
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return std::string();
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}
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std::vector<AnnotatedCode> getAnnotatedCode(const std::vector<CPPToken>& tokens)
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{
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std::vector<AnnotatedCode> ret;
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for(size_t i=0;i<tokens.size();++i)
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{
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if(tokens[i].type==CPPFileTokenType_Comment)
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{
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std::map<std::string, std::string> annotations;
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std::regex find_annotations("@([^ \\r\\n]*)[ ]*(((?!@)(?!\\*/)(\\S|\\s))*)", std::regex::ECMAScript);
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for(auto it=std::regex_iterator<std::string::const_iterator>(tokens[i].data.begin(), tokens[i].data.end(), find_annotations);
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it!=std::regex_iterator<std::string::const_iterator>();++it)
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{
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auto m=*it;
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std::string annotation_text=m[2].str();
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annotations[m[1].str()]=trim(cleanup_annotation(annotation_text));
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}
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ret.push_back(AnnotatedCode(tokens[i].data));
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if(!annotations.empty())
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{
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if(i+1<tokens.size() && tokens[i+1].type==CPPFileTokenType_Code)
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{
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std::string next_code=tokens[i+1].data;
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std::string first_function=extractFirstFunction(next_code);
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if(!first_function.empty())
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{
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ret.push_back(AnnotatedCode(annotations, first_function));
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ret.push_back(AnnotatedCode(next_code.substr(first_function.size())));
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++i;
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}
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else
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{
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ret.push_back(AnnotatedCode(annotations, ""));
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}
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}
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}
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}
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else
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{
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ret.push_back(AnnotatedCode(tokens[i].data));
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}
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}
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return ret;
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}
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struct ReturnType
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{
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ReturnType(std::string type, std::string name)
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: type(type), name(name)
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{
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}
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std::string type;
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std::string name;
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};
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std::vector<ReturnType> parseReturnTypes(std::string return_str)
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{
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std::vector<std::string> toks;
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Tokenize(return_str, toks, ",");
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std::vector<ReturnType> ret;
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for(size_t i=0;i<toks.size();++i)
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{
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toks[i]=trim(toks[i]);
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ret.push_back(ReturnType(getuntil(" ", toks[i]), getafter(" ", toks[i])));
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}
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return ret;
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}
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std::string parseSqlString(std::string sql, std::vector<ReturnType>& types)
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{
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std::regex find_var(":([^ (]*)\\(([^)]*?)\\)",std::regex::ECMAScript);
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size_t lastPos=0;
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std::string retSql;
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for(auto it=std::regex_iterator<std::string::const_iterator>(sql.begin(), sql.end(), find_var);
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it!=std::regex_iterator<std::string::const_iterator>();++it)
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{
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auto m=*it;
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if(m.position()>lastPos)
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{
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retSql+=sql.substr(lastPos, m.position()-lastPos);
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lastPos=m.position()+m[0].length();
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}
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retSql+="?";
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types.push_back(ReturnType(m[2].str(), m[1].str()));
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}
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if(lastPos<sql.size())
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{
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retSql+=sql.substr(lastPos);
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}
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return retSql;
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}
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struct SStructure
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{
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bool use_exist;
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std::string code;
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};
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struct GeneratedData
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{
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std::string createQueriesCode;
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std::string destroyQueriesCode;
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std::string funcdecls;
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std::map<std::string, SStructure> structures;
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std::string variables;
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};
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void generateStructure(std::string name, std::vector<ReturnType> return_types, GeneratedData& gen_data, bool use_exists)
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{
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if(gen_data.structures.find(name)!=gen_data.structures.end() && (!use_exists || gen_data.structures[name].use_exist ) )
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{
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return;
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}
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std::string code;
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code+="\tstruct "+name+"\r\n";
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code+="\t{\r\n";
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if(use_exists)
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{
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code+="\t\tbool exists;\r\n";
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}
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for(size_t i=0;i<return_types.size();++i)
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{
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std::string type=return_types[i].type;
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if(type=="string")
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type="std::wstring";
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code+="\t\t"+type+" "+return_types[i].name+";\r\n";
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}
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code+="\t};\r\n";
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SStructure s = {use_exists, code};
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gen_data.structures[name] = s;
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}
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std::string generateConditional(ReturnType rtype, GeneratedData& gen_data)
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{
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std::string cond_name;
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if(!rtype.type.empty())
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{
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cond_name+=(char)toupper(rtype.type[0]);
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cond_name+=rtype.type.substr(1);
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}
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cond_name="Cond"+cond_name;
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if(gen_data.structures.find(cond_name)!=gen_data.structures.end())
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{
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return cond_name;
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}
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std::string code;
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code+="\tstruct "+cond_name+"\r\n";
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code+="\t{\r\n";
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code+="\t\tbool exists;\r\n";
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std::string type=rtype.type;
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if(type=="string")
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type="std::wstring";
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code+="\t\t"+type+" value;\r\n";
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code+="\t};\r\n";
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SStructure s = {true, code};
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gen_data.structures[cond_name] = s;
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return cond_name;
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}
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enum StatementType
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{
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StatementType_Select,
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StatementType_Delete,
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StatementType_Insert,
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StatementType_Update,
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StatementType_None
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};
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AnnotatedCode generateSqlFunction(IDatabase* db, AnnotatedCode input, GeneratedData& gen_data)
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{
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std::string sql=input.annotations["sql"];
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std::string func=input.annotations["func"];
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std::string return_type=getuntil(" ", func);
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std::string funcsig=getafter(" ", func);
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std::string struct_name=return_type;
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std::string query_name=funcsig;
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std::string func_s_name=funcsig;
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std::string classname;
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if(query_name.find("::")!=std::string::npos)
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{
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classname=getuntil("::", query_name);
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query_name=getafter("::", query_name);
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func_s_name=query_name;
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}
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query_name="q_"+query_name;
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bool return_vector=false;
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if(return_type.find("vector")==0)
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{
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return_type="std::"+return_type;
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}
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if(return_type.find("std::vector")==0)
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{
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struct_name=getbetween("<", ">", return_type);
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if(struct_name=="string")
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{
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return_type="std::vector<std::wstring>";
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}
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return_vector=true;
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}
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StatementType stmt_type=StatementType_None;
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if(strlower(sql).find("select")!=std::string::npos)
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{
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stmt_type=StatementType_Select;
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}
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if(strlower(sql).find("delete")!=std::string::npos)
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{
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stmt_type=StatementType_Delete;
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}
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if(strlower(sql).find("insert")!=std::string::npos)
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{
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stmt_type=StatementType_Insert;
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}
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std::string return_vals=input.annotations["return"];
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std::vector<ReturnType> return_types=parseReturnTypes(return_vals);
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bool use_struct=false;
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bool use_cond=false;
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bool use_exists=false;
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bool use_raw=false;
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if(return_types.size()>1)
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{
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use_struct=true;
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}
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if(return_vector)
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{
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if(return_types.size()>1)
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{
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generateStructure(struct_name, return_types, gen_data, false);
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}
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}
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else if(strlower(return_type)!="void")
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{
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if(return_types.size()==1)
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{
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if(return_types[0].type.find("_raw")!=std::string::npos)
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{
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return_types[0].type=greplace("_raw", "", return_types[0].type);
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use_raw=true;
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struct_name=return_types[0].type;
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}
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else
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{
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use_cond=true;
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use_exists=true;
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struct_name=generateConditional(return_types[0], gen_data);
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}
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}
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else
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{
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generateStructure(struct_name, return_types, gen_data, true);
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use_exists=true;
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}
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}
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std::vector<ReturnType> params;
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std::string parsedSql=parseSqlString(sql, params);
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IQuery *q=db->Prepare("EXPLAIN "+parsedSql, true);
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if(q==NULL)
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{
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std::cout << "ERROR preparing statement: " << parsedSql << std::endl;
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return AnnotatedCode(input.annotations, "");
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}
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else
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{
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q->Read();
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}
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std::string return_outer=return_type;
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if(return_vector)
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{
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return_outer="std::vector<";
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if(use_struct)
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{
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return_outer+=(classname.empty()?"":classname+"::")+struct_name;
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}
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else
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{
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if(return_types[0].type=="string")
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{
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return_outer+="std::wstring";
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}
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else
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{
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return_outer+=return_types[0].type;
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}
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}
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return_outer+=">";
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}
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else if(use_cond)
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{
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return_outer=(classname.empty()?"":classname+"::")+struct_name;
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return_type=struct_name;
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}
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else if(struct_name!="string" && struct_name!="void" && struct_name!="int")
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{
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return_outer=(classname.empty()?"":classname+"::")+struct_name;
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return_type=struct_name;
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}
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if(return_outer=="string")
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return_outer="std::wstring";
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if(return_type=="string")
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return_type="std::wstring";
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std::string funcdecl=return_type+" "+func_s_name+"(";
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std::string code="\r\n"+return_outer+" "+funcsig+"(";
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for(size_t i=0;i<params.size();++i)
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{
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bool found=false;
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for(size_t j=0;j<i;++j)
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{
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if(params[j].name==params[i].name)
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{
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found=true;
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break;
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}
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}
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if(found)
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{
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continue;
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}
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if(i>0)
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{
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code+=", ";
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funcdecl+=", ";
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}
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std::string type=params[i].type;
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if(type=="string" || type=="std::wstring" )
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{
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type="const std::wstring&";
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}
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else if(type=="blob")
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{
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type="const std::string&";
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}
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code+=type+" "+params[i].name;
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funcdecl+=type+" "+params[i].name;
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}
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if(params.empty())
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{
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code+="void";
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funcdecl+="void";
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}
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code+=")\r\n{\r\n";
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funcdecl+=");";
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gen_data.funcdecls+="\t"+funcdecl+"\r\n";
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gen_data.variables+="\tIQuery* "+query_name+";\r\n";
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gen_data.createQueriesCode+="\t"+query_name+"="+"db->Prepare(\""+parsedSql+"\", false);\r\n";
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gen_data.destroyQueriesCode+="\tdb->destroyQuery("+query_name+");\r\n";
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for(size_t i=0;i<params.size();++i)
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{
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if(params[i].type=="blob")
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{
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code+="\t"+query_name+"->Bind("+params[i].name+".c_str(), (_u32)"+params[i].name+".size());\r\n";
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}
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else
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{
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code+="\t"+query_name+"->Bind("+params[i].name+");\r\n";
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}
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}
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if(stmt_type==StatementType_Select)
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{
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code+="\tdb_results res="+query_name+"->Read();\r\n";
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}
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else if(stmt_type==StatementType_Delete || stmt_type==StatementType_Insert)
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{
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code+="\t"+query_name+"->Write();\r\n";
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}
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if(!params.empty())
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{
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code+="\t"+query_name+"->Reset();\r\n";
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}
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if(return_vector)
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{
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code+="\tstd::vector<";
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if(use_struct)
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{
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code+=(classname.empty()?"":classname+"::")+struct_name;
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}
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else
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{
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if(return_types[0].type=="string")
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{
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code+="std::wstring";
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}
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else
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{
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code+=return_types[0].type;
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}
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}
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code+="> ret;\r\n";
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code+="\tret.resize(res.size());\r\n";
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code+="\tfor(size_t i=0;i<res.size();++i)\r\n";
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code+="\t{\r\n";
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if(use_struct)
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{
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if(gen_data.structures[struct_name].use_exist)
|
|
{
|
|
code+="\t\tret[i].exists=true;\r\n";
|
|
}
|
|
for(size_t i=0;i<return_types.size();++i)
|
|
{
|
|
if(return_types[i].type=="int")
|
|
{
|
|
code+="\t\tret[i]."+return_types[i].name+"=watoi(res[i][L\""+return_types[i].name+"\"]);\r\n";
|
|
}
|
|
else if(return_types[i].type=="int64")
|
|
{
|
|
code+="\t\tret[i]."+return_types[i].name+"=watoi64(res[i][L\""+return_types[i].name+"\"]);\r\n";
|
|
}
|
|
else
|
|
{
|
|
code+="\t\tret[i]."+return_types[i].name+"=res[i][L\""+return_types[i].name+"\"];\r\n";
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(return_types[0].type=="int")
|
|
{
|
|
code+="\t\tret[i]=watoi(res[i][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else if(return_types[0].type=="int64")
|
|
{
|
|
code+="\t\tret[i]=watoi64(res[i][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else
|
|
{
|
|
code+="\t\tret[i]=res[i][L\""+return_types[0].name+"\"];\r\n";
|
|
}
|
|
}
|
|
code+="\t}\r\n";
|
|
code+="\treturn ret;\r\n";
|
|
}
|
|
else if(!return_types.empty() && !use_raw)
|
|
{
|
|
code+="\t"+struct_name+" ret = { ";
|
|
if(!use_cond)
|
|
{
|
|
code+="false, ";
|
|
for(size_t i=0;i<return_types.size();++i)
|
|
{
|
|
if(return_types[i].type=="int" || return_types[i].type=="int64")
|
|
{
|
|
code+="0";
|
|
}
|
|
else
|
|
{
|
|
code+="L\"\"";
|
|
}
|
|
if(i+1<return_types.size())
|
|
{
|
|
code+=", ";
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
code+="false, ";
|
|
if(return_types[0].type=="int" || return_types[0].type=="int64")
|
|
{
|
|
code+="0";
|
|
}
|
|
else
|
|
{
|
|
code+="L\"\"";
|
|
}
|
|
}
|
|
code+=" };\r\n";
|
|
code+="\tif(!res.empty())\r\n";
|
|
code+="\t{\r\n";
|
|
if(use_exists)
|
|
{
|
|
code+="\t\tret.exists=true;\r\n";
|
|
}
|
|
if(!use_cond)
|
|
{
|
|
for(size_t i=0;i<return_types.size();++i)
|
|
{
|
|
if(return_types[i].type=="int")
|
|
{
|
|
code+="\t\tret."+return_types[i].name+"=watoi(res[0][L\""+return_types[i].name+"\"]);\r\n";
|
|
}
|
|
else if(return_types[i].type=="int64")
|
|
{
|
|
code+="\t\tret."+return_types[i].name+"=watoi64(res[0][L\""+return_types[i].name+"\"]);\r\n";
|
|
}
|
|
else
|
|
{
|
|
code+="\t\tret."+return_types[i].name+"=res[0][L\""+return_types[i].name+"\"];\r\n";
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(return_types[0].type=="int")
|
|
{
|
|
code+="\t\tret.value=watoi(res[0][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else if(return_types[0].type=="int64")
|
|
{
|
|
code+="\t\tret.value=watoi64(res[0][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else
|
|
{
|
|
code+="\t\tret.value=res[0][L\""+return_types[0].name+"\"];\r\n";
|
|
}
|
|
}
|
|
code+="\t}\r\n";
|
|
code+="\treturn ret;\r\n";
|
|
}
|
|
else if(return_types.size()==1)
|
|
{
|
|
code+="\tassert(!res.empty());\r\n";
|
|
if(return_types[0].type=="int")
|
|
{
|
|
code+="\treturn watoi(res[0][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else if(return_types[0].type=="int64")
|
|
{
|
|
code+="\treturn watoi64(res[0][L\""+return_types[0].name+"\"]);\r\n";
|
|
}
|
|
else
|
|
{
|
|
code+="\treturn res[0][L\""+return_types[0].name+"\"];\r\n";
|
|
}
|
|
}
|
|
code+="}";
|
|
return AnnotatedCode(input.annotations, code);
|
|
}
|
|
|
|
void setup1(IDatabase* db, std::vector<AnnotatedCode>& annotated_code)
|
|
{
|
|
for(size_t i=0;i<annotated_code.size();++i)
|
|
{
|
|
AnnotatedCode& curr=annotated_code[i];
|
|
if(!curr.annotations.empty())
|
|
{
|
|
if(curr.annotations.find("-SQLGenTempSetup")!=curr.annotations.end())
|
|
{
|
|
std::map<std::string, std::string>::iterator sql_it=curr.annotations.find("sql");
|
|
if(sql_it!=curr.annotations.end())
|
|
{
|
|
db->Write(sql_it->second);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void generateCode1(IDatabase* db, std::vector<AnnotatedCode>& annotated_code, GeneratedData& generated_data)
|
|
{
|
|
for(size_t i=0;i<annotated_code.size();++i)
|
|
{
|
|
AnnotatedCode& curr=annotated_code[i];
|
|
if(!curr.annotations.empty())
|
|
{
|
|
if(curr.annotations.find("-SQLGenAccess")!=curr.annotations.end())
|
|
{
|
|
annotated_code[i]=generateSqlFunction(db, curr, generated_data);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string replaceFunctionContent(std::string new_content, std::string data)
|
|
{
|
|
int c=0;
|
|
std::string ret;
|
|
for(size_t i=0;i<data.size();++i)
|
|
{
|
|
if(data[i]=='{')
|
|
++c;
|
|
else if(data[i]=='}')
|
|
--c;
|
|
|
|
if(c>0)
|
|
{
|
|
if(!new_content.empty())
|
|
ret+="{";
|
|
ret+=new_content;
|
|
new_content.clear();
|
|
}
|
|
else
|
|
{
|
|
ret+=data[i];
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
std::string generateSetupFunction(std::string data, GeneratedData& generated_data)
|
|
{
|
|
return replaceFunctionContent("\r\n"+generated_data.createQueriesCode, data);
|
|
}
|
|
|
|
std::string generateDestructionFunction(std::string data, GeneratedData& generated_data)
|
|
{
|
|
return replaceFunctionContent("\r\n"+generated_data.destroyQueriesCode, data);
|
|
}
|
|
|
|
void generateCode2(std::vector<AnnotatedCode>& annotated_code, GeneratedData& generated_data)
|
|
{
|
|
for(size_t i=0;i<annotated_code.size();++i)
|
|
{
|
|
AnnotatedCode& curr=annotated_code[i];
|
|
if(!curr.annotations.empty())
|
|
{
|
|
if(curr.annotations.find("-SQLGenSetup")!=curr.annotations.end())
|
|
{
|
|
annotated_code[i]=generateSetupFunction(curr.code, generated_data);
|
|
}
|
|
else if(curr.annotations.find("-SQLGenDestruction")!=curr.annotations.end())
|
|
{
|
|
annotated_code[i]=generateDestructionFunction(curr.code, generated_data);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string getCode(const std::vector<AnnotatedCode>& annotated_code)
|
|
{
|
|
std::string code;
|
|
for(size_t i=0;i<annotated_code.size();++i)
|
|
{
|
|
const AnnotatedCode& curr=annotated_code[i];
|
|
code+=curr.code;
|
|
}
|
|
return code;
|
|
}
|
|
|
|
std::string setbetween(std::string s1, std::string s2, std::string toset, std::string data)
|
|
{
|
|
size_t start_pos=data.find(s1);
|
|
if(start_pos==std::string::npos)
|
|
return std::string();
|
|
|
|
size_t end_pos=data.find(s2, start_pos);
|
|
if(end_pos==std::string::npos)
|
|
return std::string();
|
|
|
|
return data.substr(0, start_pos+s1.size())+"\r\n"+toset+data.substr(end_pos, data.size()-end_pos);
|
|
}
|
|
|
|
std::string getStructureCode(const GeneratedData& generated_data)
|
|
{
|
|
std::string code;
|
|
for(auto iter=generated_data.structures.begin();
|
|
iter!=generated_data.structures.end();
|
|
++iter)
|
|
{
|
|
code+=iter->second.code;
|
|
}
|
|
return code;
|
|
}
|
|
|
|
std::string placeData(std::string headerfile, GeneratedData generated_data)
|
|
{
|
|
std::string t_headerfile=setbetween("//@-SQLGenFunctionsBegin", "//@-SQLGenFunctionsEnd", getStructureCode(generated_data)+"\r\n\r\n"+generated_data.funcdecls+"\t", headerfile);
|
|
|
|
if(t_headerfile.empty())
|
|
{
|
|
std::cout << "ERROR: Cannot find \"//@-SQLGenFunctionsBegin\" or \"//@-SQLGenFunctionsEnd\" in Header-file" << std::endl;
|
|
return headerfile;
|
|
}
|
|
|
|
t_headerfile=setbetween("//@-SQLGenVariablesBegin", "//@-SQLGenVariablesEnd", generated_data.variables+"\t", t_headerfile);
|
|
|
|
if(t_headerfile.empty())
|
|
{
|
|
std::cout << "ERROR: Cannot find \"//@-SQLGenVariablesBegin\" or \"//@-SQLGenVariablesEnd\" in Header-file" << std::endl;
|
|
return headerfile;
|
|
}
|
|
|
|
return t_headerfile;
|
|
}
|
|
|
|
void sqlgen(IDatabase* db, std::string &cppfile, std::string &headerfile)
|
|
{
|
|
std::vector<CPPToken> tokens=tokenizeFile(cppfile);
|
|
std::vector<AnnotatedCode> annotated_code=getAnnotatedCode(tokens);
|
|
GeneratedData generated_data;
|
|
setup1(db, annotated_code);
|
|
generateCode1(db, annotated_code, generated_data);
|
|
generateCode2(annotated_code, generated_data);
|
|
cppfile=getCode(annotated_code);
|
|
headerfile=placeData(headerfile, generated_data);
|
|
} |