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This commit is contained in:
aozhiwei 2023-02-06 14:31:11 +08:00
parent bcca9bb6eb
commit 1083101984
2 changed files with 0 additions and 115 deletions
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92
a8/csvreader.cc
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#include <assert.h>
#include <a8/a8.h>
#include <a8/stringlist.h>
#include <a8/csvreader.h>
namespace a8
{
CsvReader::CsvReader()
{
}
bool CsvReader::Load(const std::string& filename)
{
columns_.clear();
values_.clear();
currline_ = 0;
bool ret = stringlist_.LoadFromFile(filename.c_str());
if(ret){
if(NextLine()){
for(unsigned int i = 0;i < values_.size(); i++){
columns_.insert(std::pair<std::string, int>(values_[i], i));
}
}
}
return ret;
}
bool CsvReader::NextLine()
{
if(currline_ >= stringlist_.Count()){
return false;
}
values_.clear();
std::string tmp_str = stringlist_.String(currline_);
const char *p = tmp_str.c_str();
const char *pv = p;
// printf("%s\n", p);
while(*p && p){
if(*p == ','){
if(p > pv){
values_.push_back(std::string(pv, p - pv));
// printf("%s\n", std::string(pv, p - pv).c_str());
}else{
values_.push_back("");
}
pv = p + 1;
}
p++;
}
if(p && *p == ','){
values_.push_back("");
}else if(p > pv){
values_.push_back(std::string(pv, p - pv));
}
if(columns_.size() - values_.size() == 1){
values_.push_back("");
}
if(columns_.size() > 0){
assert(values_.size() >= columns_.size());
}
currline_++;
return true;
}
a8::XValue CsvReader::GetValue(const char* name)
{
std::map<std::string, int>::iterator itr = columns_.find(name);
if(itr != columns_.end()){
std::string decoestring = values_[itr->second];
a8::ReplaceString(decoestring, "\\n", "\n");
a8::ReplaceString(decoestring, "，", ",");
return a8::XValue(decoestring);
}else{
assert(false);
return a8::XValue("");
}
}
a8::XValue CsvReader::GetValue(const std::string& name)
{
return GetValue(name.c_str());
}
bool CsvReader::KeyExists(const std::string& name)
{
auto itr = columns_.find(name);
return itr != columns_.end();
}
}

23
a8/csvreader.h
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#pragma once
namespace a8
{
class CsvReader
{
public:
CsvReader();
bool Load(const std::string& filename);
bool NextLine();
a8::XValue GetValue(const char* name);
a8::XValue GetValue(const std::string& name);
bool KeyExists(const std::string& name);
private:
std::map<std::string, int> columns_;
std::vector<std::string> values_;
int currline_ = 0;
a8::StringList stringlist_;
};
}