HaiDownlodManager - simples programa para baixar arquivos
Publicado por Gabriel Duarte Guimarães Costa (última atualização em 08/03/2010)
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Homepage: http://kinuxlinux.org/gabriel_duarte
Um simples programa para baixar arquivos construído usando C/C++, FLTK, libcURL e POSIX Threads.
http://github.com/gabrield/HaiDownloadManager
/* compile with "g++ HaiDownLoader.cpp -lfltk -o HaiDownLoader -pedantic -Wall -lcurl" */ #include <stdio.h> #include <stdlib.h> #include <pthread.h> #include <FL/Fl.H> #include <FL/Fl_Window.H> #include <FL/Fl_Button.H> #include <FL/Fl_Input.H> #include <FL/Fl_Progress.H> #include <FL/Fl_File_Chooser.H> #include <FL/fl_ask.H> #include <FL/filename.H> #include <curl/curl.h> #include <curl/types.h> #include <curl/easy.h> Fl_Progress *pdown = (Fl_Progress*)0; Fl_Input *f2save = (Fl_Input*)0; size_t write_func(void *ptr, size_t size, size_t nmemb, FILE *stream) { return fwrite(ptr, size, nmemb, stream); } size_t read_func(void *ptr, size_t size, size_t nmemb, FILE *stream) { return fread(ptr, size, nmemb, stream); } int progress_func(Fl_Progress *bar, double t, double d, double ultotal, double ulnow) { char prgs[5]; Fl::check(); //if ((d*100.0/t) == 100.0) fl_alert("Download is finished! :D"); bar->value(d*100.0/t); sprintf(prgs, "%2.2f%%", d*100.0/t); bar->copy_label(prgs); bar->redraw(); //printf("%2.2f kb / %2.2f kb (%g %%)\n", d/1024, t/1024, d*100.0/t); return 0; } void perform_curl(const char *url, const char *filename, FILE *outfile) { CURL *curl; CURLcode res; curl = curl_easy_init(); outfile = fopen(filename, "w"); curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_setopt(curl, CURLOPT_WRITEDATA, outfile); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_func); curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_func); curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L); curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_func); curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, pdown); printf("URL = %s\n", url); printf("FILE = %s\n", filename); res = curl_easy_perform(curl); fclose(outfile); fl_alert("Download is finished! :D"); /* always cleanup */ curl_easy_cleanup(curl); return; } void *download_thread(void *ptr) { /*CURL *curl;*/ /*CURLcode res;*/ FILE *outfile; char *url = (char*)ptr; char p2save[256]; int choice = 0; sprintf(p2save, "%s/%s", f2save->value(), fl_filename_name(url)); outfile = fopen(p2save, "r"); if(outfile) { choice = fl_choice("File already exists, do you want to overwrite it?", "No", "Yes", NULL); switch(choice) { case 0: fclose(outfile); break; case 1: fclose(outfile); perform_curl((const char*)url, (const char*)p2save, outfile); break; } } else { perform_curl((const char*)url, (const char*)p2save, outfile); } return NULL; } void save_file(Fl_Widget*, void *f2save) { char *folder; Fl_Input *path = (Fl_Input*)f2save; folder = fl_dir_chooser("Place to save file",NULL, 0); path->value(folder); return; } void download_file(Fl_Widget*, void *url) { pthread_t dthread; pthread_attr_t attr; Fl_Input *turl = (Fl_Input *)url; if(turl->size() == 0 || f2save->size() == 0) { if(turl->size() == 0) { fl_alert("Empty URL!"); } if (f2save->size() == 0) { fl_alert("You must select a directory to save the file!"); } return; } else { /* Initialize and set thread detached attribute */ pthread_attr_init(&attr); pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); pthread_create(&dthread, &attr, download_thread, (void*)turl->value()); pthread_join(dthread, NULL); } return; } void t_exit(Fl_Widget *, void *) { printf("\n"); exit(0); } int main(int argc, char *argv[]) { Fl_Window *mwin; Fl_Input *url; Fl_Button *btf2save, *bt2down; Fl_Group *grp; //Fl::scheme("gtk+"); curl_global_init(CURL_GLOBAL_ALL); mwin = new Fl_Window((Fl::w() - 360)/2, (Fl::h() - 180)/2, 360, 180, "HaiDownLoader"); bt2down = new Fl_Button((mwin->w()-350)/2, 150, 350, 25, "Download"); bt2down->box(FL_GTK_UP_BOX); mwin->begin(); { grp = new Fl_Group(5, 5, 350, 140); grp->box(FL_GTK_ROUND_UP_BOX); { url = new Fl_Input(65, 30, 235, 25, "URL:"); f2save = new Fl_Input(135, 60, 165, 25, "Output Directory:"); btf2save = new Fl_Button(305, 60, 40, 25, "..."); btf2save->box(FL_GTK_UP_BOX); pdown = new Fl_Progress((grp->w()-250)/2, 100, 250, 25, "0%"); pdown->color(FL_GREEN); pdown->minimum(0); pdown->maximum(100); pdown->label("0 %"); } } bt2down->callback(download_file, (void*)url); btf2save->callback(save_file, (void*)f2save); mwin->end(); mwin->callback(t_exit); mwin->show(); return Fl::run(); }
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