Resource for Source: C/C++/Resource for Source - C-C++.iso/misc_src/knowhow4/fsys.cpp

C/C++ Source or Header | 1995-11-01 | 5.2 KB | 197 lines

#include "fsys.h"
#include <dos.h>
#include <search.h>

#define PATH_LEN 80

int disk(char* drive)
    {
    return strlwr(drive)[0] - 'a';
    }
///////////////////////////////////
int change_directory(int num) // looks, if it is possible to go to this directory
               // if ".." - one level up, if "any name" - down
    {
    if(!chdir(global[num]))   // if we can go there
    return 1;
    return 0;
    }
//////////////////
int sort_function( const void *a, const void *b)
    {
    return( strcmp(*(char**)a, *(char**)b) );
    }
///////////////////
void get_dir(void)
    {
    struct ffblk ffblk;
    int done;
    global_num = 1;
    if(!*global[0])  // nothing from edit line
    {
    delete global[0];
    global[0] = strdup("*.*");
    }

    char drive[MAXDRIVE]; char dir[MAXDIR]; char file[MAXFILE];
    char ext[MAXEXT];
    int flags;
    flags = fnsplit(global[0], drive, dir, file, ext);

    if(flags & DRIVE)
    setdisk(disk(drive));
    if(flags & DIRECTORY)
    chdir(dir);

    delete global[0];
    global[0] = strdup(strcat(file, ext));

    char* mask = strdup(global[0]);  // mask for file list creation

    done = findfirst(mask, &ffblk, 0);
    int i = 0;
    while(!done)
    {
    if(global_num > MAX_GLOBAL - 2)
        break;                                      // global_num == 200
    delete global[global_num];            // if file with given mask
    global[global_num] = strdup(strlwr(ffblk.ff_name));
    done = findnext(&ffblk);
    global_num++;
    i++;
    }
    qsort((void*)(global + 1), i, sizeof(char*), sort_function);


    done = findfirst("*.*", &ffblk, FA_DIREC);

    int j = i;
    i = 1;
    while(!done)
    {
    if(global_num > MAX_GLOBAL - 2)
        break;                                      // global_num == 200
    if(ffblk.ff_attrib & FA_DIREC && strcmp(".", ffblk.ff_name))
        {                      // if directory
        delete global[global_num];
        global[global_num] = strdup(ffblk.ff_name);
        global_num++;
        i++;
        }
    done = findnext(&ffblk);
    }
    if(i > 1)
    qsort((void*)(global + j + 1), i - 1, sizeof(char*), sort_function);
    delete global[global_num];
    global[global_num] = strdup("");
    delete mask;
    }
//////////////////////////////
void new_file()  // return correct file name
    {
    char* a;
    delete global[1];    delete global[2];    global[2] = strdup("");
    if(a = strstr(global[0], ".*"))
    {
    global[1] = strdup("work");
    return;
    }
    if(a = strstr(global[0], "*."))
    {
    global[1] = strdup("work");
    strcat(global[1], a + 1);
    return;
    }
    global[1] = strdup(global[0]);
    }
///////////////////////////////
FileSystem::FileSystem(rect coords)
    : TextMenu(coords, "", "",
           /* HOT */ NULL, /* POS */ 1, /* START */ 1,
           /* ITEMSTRINGS */ NULL,
           /* STATUSPOS */ rect(0, 24, 79, 25),
           /* STATUSTYPE */ 0, /* STATUSSTRINGS */ NULL,
           /* STATUSLIST */ NULL,
           /* res */ FIXED, /* s */ 0, /* b_type */ SHOW_BORDER,
           /* hdr_b_type */ NO_BORDER, 16, /* hdr_pat */ 0)
    {
    reserv = new char[MAXPATH + 10];
    }
/////////////////////////
void FileSystem::show()
    {
    redraw = 2;
    TextMenu::show();
    }
//////////////////////////
void FileSystem::exe(int )
    {
    FILE* tmp_file = fopen(global[0], "a");

    if(!fclose(tmp_file))                     // If file name is legal.
    {
    global_i[0] = AC_OK;
    global_i[1] = 1;
    char work[MAXPATH];
    getcwd(work, MAXPATH);
    strcat(work, "\\");
    strcat(work, global[0]);
    delete global[1];
    global[1] = strdup(work);
    e.what = KEYEVENT;
        strcpy(reserv, global[0]);
    return;
    }
    while(1)
    {
    if(global_i[0] == AC_SELECT
        || (redraw == 2 &&
            e.what == MOUSEEVENT && user_screen().contains(e.where())))
        {
            global_i[0] = AC_SELECT;
            if((strcmp(global[0], reserv) && *global[0] != '\0')
                || redraw)
                {
                mouseHideCursor();
                get_dir();                   // Read the list of files.
                if(*global[1] == '\0')       // Clear disk.
            new_file();
                setItems();                    // assign file list to item list
                start = pos = 1;
                calcConsts();

                TextMenu::show();
                mouseShowCursor();
        moveTo(1);                     // and show them
                }
            redraw = 0;
        }
        strcpy(reserv, global[0]);
    TextMenu::exe((global_i[0] == AC_SELECT
               || global_i[0] == AC_NULL) ? 0 : global_i[0]);
    global_i[1] = global_num;       // global_i[1] reserved for file system

    if((global_i[0] == AC_SELECT && !change_directory(global_num)))  // it is not directory and RETURN pressed
        {
        e.what = KEYEVENT;
        if(e.key != EVENT_TAB)
        e.key = EVENT_RETURN;
        char work[MAXPATH];
        getcwd(work, MAXPATH);
        strcat(work, "\\");
        strcat(work, global[global_i[1]]);
        delete global[global_i[1]];
        global[global_i[1]] = strdup(work);
        global_num = 1;
        global_i[0] = 0;
        return;
        }
        else
            redraw = 1;
    if(global_i[0] != AC_SELECT)
        return;
    }

    }
////////////////////////