PROGRAM 3 /*******************************************************/ /* program name: program3.c */ /* brief description: directory browser */ /* name: anthony f. ortiz */ /* assignment #: 3 */ /* class: cs3560-01 */ /* quarter: spring 97 */ /* date completed: may 22, 1997 */ /* date due: may 22, 1997 */ /* version of compiler: csuh compiler */ /*******************************************************/ /*****************************************************************************/ /* this program gets and displays the files in the current directory. the */ /* user can perform any one of the following actions: quit the program, */ /* move cursor up to view a file, move cursor down to view a file, page */ /* up through list of files, page down through list of files, go to parent */ /* directory, or go to selected sub-directory. */ /*****************************************************************************/ /*****************************************************************************/ /* note: the last three permissions are the set-user id bit, the set-group */ /* id bit, and the sticky bit. */ /*****************************************************************************/ /* header files */ #include#include #include #include #include #include #include #include #include #include /* file variable */ struct file { char file_name [15]; char user [15]; char group [15]; char permissions [12]; char mod_time [30]; } files [500]; int i; /* cursor position (x, y) */ short int x = 1; short int y = 7; /* part of array to print */ int min = 0; int max = 15; /* program procedures */ void print_name (); void print_instructions (); void print_pathname (); void get_files (char adirectory []); void print_firstscreen (); void do_action (char action); void move_up (); void move_down (); void page_up (); void page_down (); void goto_parentdir (); void goto_selecteddir (); void clear_screen (); void clear_screen2 (); void initialize_files (); /******************/ /* main program */ /******************/ void main () { char action; initialize_files (); print_name (); print_instructions (); print_pathname (); get_files ("."); print_firstscreen (); do { action = getch (); do_action (action); } while (action != 'q'); endwin (); } /***********************/ /* initialize files. */ /***********************/ void initialize_files () { int j, k; for (j = 0; j < 500; j++) { strcpy (files [j].file_name, "error") ; strcpy (files [j].user, "error"); strcpy (files [j].group, "error"); strcpy (files [j].permissions, "error"); strcpy (files [j].mod_time, "error "); } } /*****************************/ /* print the program name. */ /*****************************/ void print_name () { initscr (); crmode (); noecho (); nonl (); clear (); mvaddstr (1, 1,"-----------------------------------"); refresh (); mvaddstr (1,36,"-----------------------------------"); refresh (); mvaddstr (2, 1, "directory browser"); refresh (); mvaddstr (3,1, "-----------------------------------"); refresh (); mvaddstr (3,36,"-----------------------------------"); refresh (); } /**********************************/ /* print the help instructions. */ /**********************************/ void print_instructions () { mvaddstr (4, 1,"q-quit, w-cursor up, z-cursor down, e-page up, "); refresh (); mvaddstr (4, 48, "x-page down, a-first page"); refresh (); mvaddstr (5,1 ,"r-go to parent directory, -go to selected subdirectory"); refresh (); mvaddstr (6, 1,"-----------------------------------"); refresh (); mvaddstr (6,36,"-----------------------------------"); } /**************************/ /* print the path name. */ /**************************/ void print_pathname () { mvaddstr (22, 1,"-----------------------------------"); refresh (); mvaddstr (22,36,"-----------------------------------"); refresh (); mvaddstr (23, 1, "pathname: "); refresh (); move (23, 15); printw ("%c", system ("pwd")); refresh (); mvaddstr (24,1, "-----------------------------------"); refresh (); mvaddstr (24, 36,"-----------------------------------"); refresh (); } /*********************************************/ /* get the files in the current directory. */ /*********************************************/ void get_files (char adirectory []) { DIR * dp; struct dirent * dirp; struct stat buf; i = 0; if ((dp = opendir (adirectory)) == NULL) { mvaddstr (7, 1, "can't open this directory "); refresh (); } else { while ((dirp = readdir (dp)) != NULL) { strcpy (files [i].file_name, dirp ->d_name); if (lstat (files [i].file_name, &buf) < 0) { /* initialize_files will take care of message. */ } else { strcpy (files [i].user, getpwuid (buf.st_uid) -> pw_name); strcpy (files [i].group, getgrgid (buf.st_gid) -> gr_name); if (S_IRUSR & buf.st_mode) files [i].permissions [0] = 'r'; else files [i].permissions [0] = '-'; if (S_IWUSR & buf.st_mode) files [i].permissions [1] = 'w'; else files [i].permissions [1] = '-'; if (S_IXUSR & buf.st_mode) files [i].permissions [2] = 'x'; else files [i].permissions [2] = '-'; if (S_IRGRP & buf.st_mode) files [i].permissions [3] = 'r'; else files [i].permissions [3] = '-'; if (S_IWGRP & buf.st_mode) files [i].permissions [4] = 'w'; else files [i].permissions [4] = '-'; if (S_IXGRP & buf.st_mode) files [i].permissions [5] = 'x'; else files [i].permissions [5] = '-'; if (S_IROTH & buf.st_mode) files [i].permissions [6] = 'r'; else files [i].permissions [6] = '-'; if (S_IWOTH & buf.st_mode) files [i].permissions [7] = 'w'; else files [i].permissions [7] = '-'; if (S_IXOTH & buf.st_mode) files [i].permissions [8] = 'x'; else files [i].permissions [8] = '-'; if (S_ISVTX & buf.st_mode) files [i].permissions [9] = 's'; else files [i].permissions [9] = '-'; if (S_ISUID & buf.st_mode) files [i].permissions [10] = 's'; else files [i].permissions [10] = '-'; if (S_ISGID & buf.st_mode) files [i].permissions [11] = 's'; else files [i].permissions [11] = '-'; strcpy (files [i].mod_time, ctime(&buf.st_ctime)); files [i].mod_time [20] = '\0'; } i = i + 1; } } closedir (dp); } /*************************/ /* print first screen. */ /*************************/ void print_firstscreen () { int j; int k = 0; for (j = min; j < max; j++) { if (j >= i || j < 0) break; move (7 + k, 1); printw ("%s", files [j].file_name); refresh (); move (7 + k, 16); printw ("%s", files [j].user); refresh (); move (7 + k, 31); printw ("%s", files [j].group); refresh (); move (7 + k, 46); printw ("%s", files [j].permissions); refresh (); move (7 + k, 58); printw ("%s", files [j].mod_time); refresh (); k = k + 1; } move (y, x); refresh (); } /*************************************/ /* do one of the keyboard actions. */ /*************************************/ void do_action (char action) { switch (action) { case 'q': break; case 'w': move_up (); break; case 'z': move_down (); break; case 'e': page_up (); break; case 'x': page_down (); break; case 'a': x = 1; y = 7; min = 0; max = 15; clear_screen (); print_firstscreen (); break; case 'r': goto_parentdir (); break; case 13: goto_selecteddir (); break; } } /*********************/ /* move cursor up. */ /*********************/ void move_down () { if (y < 21) { y++; move (y, x); refresh (); } else if (y >= 21) { y = 7; x = 1; min = min + 15; max = max + 15; clear_screen (); print_firstscreen (); } } /***********************/ /* move cursor down. */ /***********************/ void move_up () { if (y > 7) { y--; move (y, x); refresh (); } else if (y == 7) { y = 21; x = 1; min = min - 15; max = max - 15; clear_screen (); print_firstscreen (); } } /**************/ /* page up. */ /**************/ void page_down () { x = 1; y = 7; min = min + 15; max = max + 15; clear_screen (); print_firstscreen (); } /****************/ /* page down. */ /****************/ void page_up () { x = 1; y = 7; min = min - 15; max = max - 15; clear_screen (); print_firstscreen (); } /****************************/ /* goto parent directory. */ /****************************/ void goto_parentdir () { i = 0; x = 1; y = 7; min = 0; max = 15; chdir (".."); get_files ("."); clear_screen (); clear_screen2 (); print_pathname (); print_firstscreen (); } /******************************/ /* goto selected directory. */ /******************************/ void goto_selecteddir () { short int y2 = y; int min2 = min; DIR * dp; struct dirent * dirp; if (chdir (files [min + y - 7].file_name) < 0) { clear_screen (); mvaddstr (7, 1, "can't open directory"); refresh (); } else { i = 0; x = 1; y = 7; min = 0; max = 15; get_files ("."); clear_screen (); clear_screen2 (); print_pathname (); print_firstscreen (); } } /*********************************/ /* clear screen (main window). */ /*********************************/ void clear_screen () { int k; for (k = 0; k < 15; k++) { mvaddstr (7 + k, 1, " "); mvaddstr (7 + k, 41, " "); refresh (); } } /*******************************************/ /* clear screen (bottom part of window). */ /*******************************************/ void clear_screen2 () { int k; for (k = 0; k < 1; k++) { mvaddstr (23, 1, " "); mvaddstr (23, 41, " "); refresh (); } } /* outfile: prog3.out */ ---------------------------------------------------------------------- directory browser ---------------------------------------------------------------------- q-quit, w-cursor up, z-cursor down, e-page up, x-page down, a-first page r-go to parent directory, -go to selected subdirectory ---------------------------------------------------------------------- pathname: /students/w99/cs3590-01/cs218-01 . cs218-01 student rwx---------Fri Mar 12 14:56:14 .. root other rwxr-xr-x---Thu Jan 7 19:49:53 .dt cs218-01 student rwxr-xr-x---Thu Jan 7 20:34:16 .fm cs218-01 student rwx---------Thu Jan 7 20:48:23 .solregis cs218-01 student rwx---------Thu Jan 7 21:00:50 .wastebasket cs218-01 student rwx---------Thu Jan 7 21:02:41 .OWfontpath cs218-01 student rw----------Thu Jan 7 17:45:38 .Xauthority cs218-01 student rw----------Thu Jan 7 17:45:38 .Xdefaults.X11Rcs218-01 student rwx---------Thu Jan 7 17:45:38 .Xdefaults.opencs218-01 student rwx---------Thu Jan 7 17:45:38 .cshrc cs218-01 student rwx---------Thu Jan 7 17:45:39 .desksetdefaultcs218-01 student rw----------Thu Jan 7 17:45:39 .dtprofile cs218-01 student rwx---------Thu Jan 7 17:45:39 .emacs cs218-01 student rwx---------Thu Jan 7 17:45:39
BACK TO CS3560 PAGE.