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#include <stdexcept>
#include "textblob.h"
using namespace std;
bool TextBlob::isInRange(i64 y,i64 x) const {
return y>=0&&y<(i64)lines.size()&&x>=0&&x<(i64)lines[y].size();
}
bool TextBlob::isInRangeP1(i64 y,i64 x) const {
return y>=0&&y<=(i64)lines.size()&&x>=0&&(y==(i64)lines.size()?x==0:x<=(i64)lines[y].size());
}
bool TextBlob::isInRange(i64 y) const {
return y>=0&&y<(i64)lines.size();
}
bool TextBlob::isInRangeP1(i64 y) const {
return y>=0&&y<=(i64)lines.size();
}
void TextBlob::checkInRange(i64 y,i64 x) const {
if(!isInRange(y,x)){
throw out_of_range("Position y="+to_string(y)+" x="+to_string(x)+" not in range of TextBlob");
}
}
void TextBlob::checkInRangeP1(i64 y,i64 x) const {
if(!isInRangeP1(y,x)){
throw out_of_range("Position y="+to_string(y)+" x="+to_string(x)+" not in range of TextBlob");
}
}
void TextBlob::checkInRange(i64 y) const {
if(!isInRange(y)){
throw out_of_range("Position y="+to_string(y)+" not in range of TextBlob");
}
}
void TextBlob::checkInRangeP1(i64 y) const {
if(!isInRangeP1(y)){
throw out_of_range("Position y="+to_string(y)+" not in range of TextBlob");
}
}
void TextBlob::clear(){
lines.clear();
}
i64 TextBlob::read(istream &is){
lines.clear();
string ln;
i64 count=0;
while(getline(is,ln)){
count+=ln.size()+1;
lines.push_back(move(ln));
}
return count;
}
i64 TextBlob::write(ostream &os) const {
i64 count=0;
for(const string &line : lines){
os<<line<<'\n';
count+=line.size()+1;
}
os<<flush;
return count;
}
void TextBlob::setText(const string &text){
lines.clear();
insertString(0,0,text);
}
string TextBlob::fullText() const {
string res;
for(const string &line : lines){
res+=line+'\n';
}
return res;
}
char TextBlob::replace(i64 y,i64 x,char c){
checkInRange(y,x);
char old=lines[y][x];
lines[y][x]=c;
return old;
}
void TextBlob::insert(i64 y,i64 x,char c){
if(lines.size()==0&&y==0&&x==0){
lines.emplace_back();
} else {
checkInRange(y); checkInRangeP1(y,x);
}
if(c=='\n'){
lines.emplace(lines.begin()+(y+1),lines[y],x);
lines[y].erase(x);
} else {
lines[y].insert(x,1,c);
}
}
void TextBlob::insertLine(i64 y,const string &line){
checkInRangeP1(y);
if(line.find('\n')!=string::npos){
throw invalid_argument("Newline in argument to TextBlob::insertLine");
}
lines.insert(lines.begin()+y,line);
}
void TextBlob::insertString(i64 y,i64 x,const string &str){
if(lines.size()==0&&y==0&&x==0){
lines.emplace_back();
} else {
checkInRange(y); checkInRangeP1(y,x);
}
size_t idx=str.find('\n');
if(idx==string::npos){
lines[y].insert(x,str);
return;
}
lines[y].insert(x,str,0,idx);
i64 afterfirstpart=x+idx;
i64 nwholelines=0;
while(true){
size_t idx2=str.find('\n',idx+1);
if(idx2==string::npos)break;
nwholelines++;
lines.emplace(lines.begin()+(y+nwholelines),str,idx+1,idx2-idx-1);
idx=idx2;
}
if(y+nwholelines+1==(i64)lines.size()){
lines.emplace_back(str,idx+1);
} else {
lines.emplace(lines.begin()+(y+nwholelines+1),str,idx+1,string::npos);
lines[y+nwholelines+1].append(lines[y],afterfirstpart,string::npos);
lines[y].erase(afterfirstpart);
}
}
char TextBlob::erase(i64 y,i64 x){
checkInRange(y); checkInRangeP1(y,x);
if(x<(i64)lines[y].size()){
char c=lines[y][x];
lines[y].erase(x,1);
return c;
} else if(y!=(i64)lines.size()-1){
lines[y]+=lines[y+1];
lines.erase(lines.begin()+(y+1));
return '\n';
} else {
return '\n';
}
}
string TextBlob::erase(i64 y,i64 x,i64 nchars){
checkInRange(y); checkInRangeP1(y,x);
if(nchars<=(i64)lines[y].size()-x){
string old(lines[y],x,nchars);
lines[y].erase(x,nchars);
return old;
}
i64 accum=lines[y].size()-x+1;
i64 y2;
for(y2=y+1;y2<(i64)lines.size();y2++){
accum+=lines[y2].size()+1;
if(accum>=nchars)break;
}
if(y2==(i64)lines.size()){
throw out_of_range("Not enough characters present in TextBlob::erase(y,x,nchars)");
}
string old;
old.reserve(nchars);
old.append(lines[y],x,string::npos);
nchars-=old.size();
lines[y].erase(x);
while(true){
if(nchars==0)return old;
old+='\n';
nchars--;
if(nchars==0){
if(y==(i64)lines.size()-1)return old;
lines[y]+=lines[y+1];
lines.erase(lines.begin()+(y+1));
return old;
}
if(nchars<(i64)lines[y+1].size()){
old.append(lines[y+1],0,nchars);
lines[y].append(lines[y+1],nchars,string::npos);
lines.erase(lines.begin()+(y+1));
return old;
}
nchars-=lines[y+1].size();
old+=lines[y+1];
lines.erase(lines.begin()+(y+1));
}
}
string& TextBlob::operator[](i64 y){
checkInRange(y);
return lines[y];
}
const string& TextBlob::operator[](i64 y) const {
checkInRange(y);
return lines[y];
}
string TextBlob::getLine(i64 y) const{
checkInRangeP1(y);
if(y==(i64)lines.size())return {};
else return lines[y];
}
i64 TextBlob::numLines() const {
return lines.size();
}
i64 TextBlob::lineLen(i64 y) const {
checkInRangeP1(y);
if(y==(i64)lines.size())return 0;
return lines[y].size();
}
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