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polish: use struct and map

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This commit is contained in:
kuoi 2024-07-05 18:30:55 +10:00
parent 69bf191a83
commit 9e7602de4b
1 changed files with 76 additions and 55 deletions
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131
sortdiamond.cpp
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@ -10,6 +10,15 @@ using namespace std;
const int n_intarr = 5;
bool use_bitscore = true;
// Struct to store the data fields
struct SeqData {
string sseqid;
int qstart;
int qend;
double bit_or_e;
string qseq;
};
// Function to generate reverse complement of a DNA sequence
string revcomp(const string &seq) {
string revseq;
@ -67,8 +76,7 @@ string revcomp(const string &seq) {
return revseq;
}
void readInputFile(const string &filename,
map<string, pair<double, string>> &max_map,
void readInputFile(const string &filename, vector<SeqData> &data_vector,
const int *intnums, const int intmax) {
ifstream infile(filename);
if (!infile) {
@ -84,59 +92,69 @@ void readInputFile(const string &filename,
while (iss >> fields[i] && i < (intmax + 1)) {
i++;
}
// subject seq id
string seqid = fields[intnums[0]];
double bitE = stod(fields[intnums[3]]);
if (use_bitscore) {
// bit score
// Check if the seqid already exists in the map
if (max_map.find(seqid) != max_map.end()) {
// If the new bitscore is greater, update the
// map
if (bitE > max_map[seqid].first) {
max_map[seqid] = make_pair(bitE, line);
}
} else {
// If the seqid does not exist, insert the new
// seqid-bitE pair
max_map[seqid] = make_pair(bitE, line);
}
} else {
// evalue
// Check if the seqid already exists in the map
if (max_map.find(seqid) != max_map.end()) {
// If the new evalue is greater, update the
// map
if (bitE < max_map[seqid].first) {
max_map[seqid] = make_pair(bitE, line);
}
} else {
// If the seqid does not exist, insert the new
// seqid-bitE pair
max_map[seqid] = make_pair(bitE, line);
}
}
// Extract fields
SeqData data;
data.sseqid = fields[intnums[0]];
data.qstart = stoi(fields[intnums[1]]);
data.qend = stoi(fields[intnums[2]]);
data.bit_or_e = stod(fields[intnums[3]]);
data.qseq = fields[intnums[4]];
// Store the data
data_vector.push_back(data);
}
infile.close();
}
void processMap(const map<string, pair<double, string>> &max_map,
vector<pair<string, string>> &result, const int *intnums,
const int intmax) {
for (const auto &entry : max_map) {
istringstream iss(entry.second.second);
vector<string> fields(intmax + 1);
// string fields[intmax + 1];
int i = 0;
while (iss >> fields[i] && i < (intmax + 1)) {
i++;
void processCompare(const vector<SeqData> &data_vector,
map<string, SeqData> &best_map) {
for (const auto &data : data_vector) {
double bitE = data.bit_or_e;
const string &sseqid = data.sseqid;
if (use_bitscore) {
// bit score
// Check if the seqid already exists in the map
if (best_map.find(sseqid) != best_map.end()) {
// If the new bitscore is greater, update the
// map
if (bitE > best_map[sseqid].bit_or_e) {
best_map[sseqid] = data;
}
} else {
// If the seqid does not exist, insert the new
// seqid-bitE pair
best_map[sseqid] = data;
}
} else {
// evalue
// Check if the seqid already exists in the map
if (best_map.find(sseqid) != best_map.end()) {
// If the new evalue is greater, update the
// map
if (bitE < best_map[sseqid].bit_or_e) {
best_map[sseqid] = data;
}
} else {
// If the seqid does not exist, insert the new
// seqid-bitE pair
best_map[sseqid] = data;
}
}
// check if qstart is larger than qend
if (stoi(fields[intnums[1]]) > stoi(fields[intnums[2]])) {
fields[intnums[4]] = revcomp(fields[intnums[4]]);
}
}
void processRevert(const map<string, SeqData> &best_map,
vector<pair<string, string>> &result) {
for (const auto &entry : best_map) {
const SeqData &data = entry.second;
// Check if qstart is larger than qend
string qseq = data.qseq;
if (data.qstart > data.qend) {
qseq = revcomp(qseq);
}
result.push_back(
make_pair(">" + fields[intnums[0]], fields[intnums[4]]));
result.push_back(make_pair(">" + data.sseqid, qseq));
}
sort(result.begin(), result.end());
}
@ -148,7 +166,6 @@ void writeOutputFile(const string &filename,
cerr << "Error opening output file: " << filename << endl;
return;
}
for (const auto &entry : result) {
outfile << entry.first << "\n" << entry.second << "\n";
}
@ -188,12 +205,10 @@ int main(int argc, char *argv[]) {
use_bitscore = true;
} else if (tmpstri == "evalue") {
use_bitscore = false;
} else {
cout << "Unknown argument: " << argv[4] << endl;
}
}
} else if (argc != 3) {
cerr << "Usage: " << argv[0]
<< " <input_file> <output_file> "
@ -208,11 +223,17 @@ int main(int argc, char *argv[]) {
string in_name = argv[1];
string ot_name = argv[2];
map<string, pair<double, string>> max_map;
readInputFile(in_name, max_map, intnums, intmax);
// get useful information from reading input file
vector<SeqData> data_vector;
readInputFile(in_name, data_vector, intnums, intmax);
// calculate best bitscore or evalue
map<string, SeqData> best_map;
processCompare(data_vector, best_map);
// write the result
vector<pair<string, string>> result;
processMap(max_map, result, intnums, intmax);
processRevert(best_map, result);
writeOutputFile(ot_name, result);
}