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#include "signature.hpp"
#include <cstdio>
#include <cstring>
#include <filesystem>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include <getopt.h>
#include "thread_pool.hpp"
int ctr;
int recursive;
int njobs=1;
double threshold=0.3;
std::vector<std::string> paths;
int parse_arguments(int argc,char **argv)
{
recursive=0;
int help=0;
option longopt[]=
{
{"recursive",no_argument ,&recursive,1},
// {"destdir" ,required_argument,0 ,'D'},
{"jobs" ,required_argument,0 ,'j'},
{"threshold",required_argument,0 ,'d'},
{"help" ,no_argument ,&help ,1},
{0 ,0 ,0 ,0}
};
while(1)
{
int idx=0;
int c=getopt_long(argc,argv,"rhj:d:",longopt,&idx);
if(!~c)break;
switch(c)
{
case 0:
if(longopt[idx].flag)break;
if(std::string("jobs")==longopt[idx].name)
sscanf(optarg,"%d",&njobs);
if(std::string("threshold")==longopt[idx].name)
sscanf(optarg,"%lf",&threshold);
break;
case 'r':
recursive=1;
break;
case 'h':
help=1;
break;
case 'j':
sscanf(optarg,"%d",&njobs);
break;
case 'd':
sscanf(optarg,"%lf",&threshold);
break;
}
}
for(;optind<argc;++optind)
paths.push_back(argv[optind]);
if(help||argc<2)
{
printf(
"Usage: %s [OPTION] PATH...\n"
"Detect potentially duplicate images in PATHs and optionally perform an action on them.\n\n"
" -h, --help Display this help message and exit.\n"
" -r, --recursive Recurse into all directories.\n"
" -j, --jobs Number of concurrent tasks to run at once.\n"
" -d, --threshold Threshold distance below which images will be considered similar.\n"
,argv[0]
);
return 1;
}
if(threshold>1||threshold<0)
{
puts("Invalid threshold value.");
return 2;
}
if(threshold<1e-6)threshold=1e-6;
if(!paths.size())
{
puts("Missing image path.");
return 2;
}
return 0;
}
void build_file_list(std::filesystem::path path,bool recursive,std::vector<std::string>&out)
{
if(recursive)
{
auto dirit=std::filesystem::recursive_directory_iterator(path);
for(auto &p:dirit)
{
FILE* fp=fopen(p.path().c_str(),"r");
char c[8];
fread((void*)c,1,6,fp);
if(!memcmp(c,"\x89PNG\r\n",6)||!memcmp(c,"\xff\xd8\xff",3))
out.push_back(p.path().string());
fclose(fp);
}
}
else
{
auto dirit=std::filesystem::directory_iterator(path);
for(auto &p:dirit)
{
FILE* fp=fopen(p.path().c_str(),"r");
char c[8];
fread((void*)c,1,6,fp);
if(!memcmp(c,"\x89PNG\r\n",6)||!memcmp(c,"\xff\xd8\xff",3))
out.push_back(p.path().string());
fclose(fp);
}
}
}
void compute_signature_vectors(const std::vector<std::string>&files,std::vector<signature>&output)
{
thread_pool tp(njobs);
for(size_t i=0;i<files.size();++i)
{
auto job_func=[&](int thid,size_t id){
fprintf(stderr,"spawned: on thread#%d, file#%lu (%s)\n",thid,id,files[id].c_str());
output[id]=signature::from_file(files[id].c_str());
fprintf(stderr,"done: file#%lu\n",id);
output[id].length();
printf("%d/%lu\r",++ctr,files.size());
fflush(stdout);
};
tp.create_task(job_func,i);
}
tp.wait();
}
void compare_signature_vectors(const std::vector<signature>&vec,std::vector<std::tuple<size_t,size_t,double>>&out)
{
thread_pool tp(njobs);
for(size_t i=0;i<vec.size();++i){if (vec[i].length() < 0) continue;
for(size_t j=i+1;j<vec.size();++j)
{
if (vec[j].length() < 0) continue;
auto job_func=[&](int thid,size_t ida,size_t idb){
fprintf(stderr,"spawned: on thread#%d, file#%lu<->file#%lu\n",thid,ida,idb);
if(true)
{
double d=vec[ida].distance(vec[idb]);
double l=vec[ida].length()+vec[idb].length();
d/=l;
if(d<threshold)out.emplace_back(ida,idb,d);
fprintf(stderr,"done:file#%lu<->file#%lu: %lf\n",ida,idb,d);
}
printf("%d/%lu\r",++ctr,vec.size()*(vec.size()-1)/2);
fflush(stdout);
};
tp.create_task(job_func,i,j);
}}
tp.wait();
}
int main(int argc,char** argv)
{
if(int pr=parse_arguments(argc,argv))return pr-1;
puts("building list of files to compare...");
std::vector<std::string> x;
for(auto&p:paths)
build_file_list(p,recursive,x);
printf("%lu files to compare.\n",x.size());
puts("computing signature vectors...");
std::vector<signature> cvecs;
cvecs.resize(x.size());
compute_signature_vectors(x,cvecs);
/*for(auto &v:cvecs)
{
fprintf(stderr,"%lu:",v.sizeof_vec);
for(size_t i=0;i<v.sizeof_vec;++i)
fprintf(stderr," %d",v.vec[i]);
fprintf(stderr,"\n");
}*/
ctr=0;
puts("\ncomparing signature vectors...");
std::vector<std::tuple<size_t,size_t,double>> r;
compare_signature_vectors(cvecs,r);
puts("");
for(auto &t:r)
printf("%s<->%s: %lf\n",x[std::get<0>(t)].c_str(),x[std::get<1>(t)].c_str(),std::get<2>(t));
printf("%lu similar images.",r.size());
cvecs.clear();
return 0;
}
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