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/**********************************************************************
* This source code is copyright 1999 by Gus Hartmann & Peter Keller *
* It may be distributed under the terms of the GNU General Purpose *
* License, version 2 or above; see the file COPYING for more *
* information. *
* *
* $Id: fgui.c,v 1.17 2002/07/12 07:08:03 hartmann Exp $
* *
**********************************************************************/
#include "sweep.h"
/* percentages of screen space utilized from LINES and COLS */
/* This means I want a window FSWIDTH% of the screen, centered and
* FSHEIGHT% of the height, centered */
#define FSWIDTH 0.80
#define FSHEIGHT 0.80
static struct FileBuf* CreateFileBuf(char *dir);
static void DestroyFileBuf(struct FileBuf *head);
static char *FSelector(void);
static char* Choose(struct FileBuf *fb);
static void Display(WINDOW *fgui, struct FileBuf *fb, int find, int cursor,
int amount);
static int qstrcmp(const void *l, const void *r);
/* make a linked list of filenames given a directory */
struct FileBuf* CreateFileBuf(char *dir)
{
char *path = NULL;
struct FileBuf *head = NULL;
struct FileBuf *tail = NULL;
struct FileBuf *del = NULL;
struct FileBuf *tmp = NULL;
DIR *dent = NULL;
struct dirent *dp = NULL;
struct FileBuf *farray = NULL;
int count = 0;
char **sort = NULL;
chdir(dir);
#if defined(PATH_MAX)
path = xgetcwd(NULL, PATH_MAX);
#elif defined(HAVE_GET_CURRENT_DIR_NAME)
path = get_current_dir_name();
#else /* Now what? No idea! */
#error "Don't know how to proceed on systems without PATH_MAX or get_current_dir_name"
#endif
dent = xopendir(dir);
if ( dent == NULL )
{
return NULL;
}
/* create a linked list of entries, don't use some of the fields for now */
while ((dp = readdir(dent)) != NULL)
{
tmp = xmalloc(sizeof(struct FileBuf) * 1);
tmp->fpath = xmalloc(strlen(dp->d_name) + strlen(path) + 2);
tmp->next = NULL;
/* create the full name for it */
strcpy(tmp->fpath, path);
if (strcmp(path,"/")!=0)
{
strcat(tmp->fpath, "/");
}
strcat(tmp->fpath, dp->d_name);
/* insert it into the list, the right way */
if (head == NULL)
{
head = tmp;
}
else
{
tail->next = tmp;
}
tail = tmp;
}
closedir(dent);
/* ok, take that linked list, and make an array out of it. Then free it */
tmp = head;
while(tmp != NULL)
{
count++;
tmp = tmp->next;
}
farray = (struct FileBuf *)xmalloc(sizeof(struct FileBuf) * count);
/* the first element in the array holds how many there are */
farray[0].numents = count;
farray[0].path = path;
/* stick it into the temporary array for sorting */
sort = (char**)xmalloc(sizeof(char*) * farray[0].numents);
count = 0;
tmp = head;
while(tmp != NULL)
{
/* move the memory over to it */
sort[count] = tmp->fpath;
count++;
tmp = tmp->next;
}
/* sort it nicely */
qsort(sort, farray[0].numents, sizeof(char*), qstrcmp);
/* now copy it out of the tmp array into the fb */
count = 0;
tmp = head;
while(tmp != NULL)
{
/* move the memory over to it */
farray[count].fpath = sort[count];
count++;
tmp = tmp->next;
}
free(sort);
/* free the old list, fpath will be owned by farray now */
tmp = head;
while(tmp != NULL)
{
del = tmp;
tmp = tmp->next;
free(del);
}
return farray;
}
/* a glorified strcmp for qsort */
int qstrcmp(const void *l, const void *r)
{
char *left = NULL;
char *right = NULL;
left = *(char**)l;
right = *(char**)r;
return strcmp(left,right);
}
/* destroy a list of directory names */
void DestroyFileBuf(struct FileBuf *head)
{
int i = 0;
free(head[0].path);
for (i = 0; i < head[0].numents; i++)
{
free(head[i].fpath);
}
free(head);
}
/* allow the user to continue selecting stuff until a file is selected */
char *FSelector(void)
{
char *selection = NULL;
struct stat buf;
struct FileBuf *fb = NULL;
fb = CreateFileBuf(".");
selection = Choose(fb);
stat(selection, &buf);
/* keep going until I get something that isn't a directory */
while(S_ISDIR(buf.st_mode))
{
DestroyFileBuf(fb);
if ( ( fb = CreateFileBuf(selection) ) == NULL )
{
return NULL;
}
free(selection);
selection = Choose(fb);
stat(selection, &buf);
}
DestroyFileBuf(fb);
return selection;
}
/* this is the nasty function that parses the filedesc and spits up a window
for you so you can select something out of it. XXX Must implement "this
is correct" option */
char* Choose(struct FileBuf *fb)
{
WINDOW *gui = NULL, *fgui = NULL;
int nlines, ncols, bx, by;
int xdist, ydist;
chtype in;
int cursor = 1; /* where the cursor starts in relation to the window */
int find = 0; /* the index of the top of the fb display */
/* the area I have to put the window */
xdist = (COLS-INFO_W-2);
ydist = (LINES-6);
/* find out how big, and where the window is, it is also centered */
nlines = (int)(ydist * FSHEIGHT);
ncols = (int)(xdist * FSWIDTH);
bx = xdist/2 - ncols/2;
by = ydist/2 - nlines/2;
/* make border window */
gui = newwin(nlines, ncols, by, bx);
if (gui == NULL)
{
perror("Choose::newwin");
exit(EXIT_FAILURE);
}
wborder(gui,CharSet.VLine,CharSet.VLine,CharSet.HLine,CharSet.HLine,
CharSet.ULCorner,CharSet.URCorner,CharSet.LLCorner,CharSet.LRCorner);
wmove(gui, by, bx);
wrefresh(gui);
/* make the window that will hold the information I want */
fgui = derwin(gui, nlines-2, ncols-2, 1, 1);
/* set it to the head of the list */
werase(fgui);
Display(fgui, fb, find, cursor, nlines-3);
wrefresh(fgui);
/* most of the nlines-3 stuff is because the first line is reserved for
* the path. */
in=getch();
if ( in == KEY_LEFT )
{
/* Find a way to return without catching an error. */
return NULL;
}
while ((in != ' ') && (in != KEY_RIGHT))
{
switch (in)
{
/* move the cursor down */
case 'j': case KEY_DOWN:
if (cursor < (nlines - 3) && cursor < fb[0].numents)
{
cursor++;
}
else if (find != fb[0].numents - (nlines-3) &&
fb[0].numents > nlines-3)
{
find++;
}
break;
/* move the cursor up */
case 'k': case KEY_UP:
if (cursor > 1)
{
cursor--;
}
else if (find > 0)
{
find--;
}
break;
default:
break;
}
werase(fgui);
Display(fgui, fb, find, cursor, nlines-3);
wrefresh(fgui);
in=getch();
}
werase(fgui);
werase(gui);
wrefresh(fgui);
wrefresh(gui);
delwin(fgui);
delwin(gui);
return strdup(fb[find + cursor - 1].fpath);
}
/* draw the part of the FileBuf I have specified in the window */
void Display(WINDOW *fgui, struct FileBuf *fb, int find,
int cursor, int amount)
{
char *p = NULL;
int i;
/* display the path, on the first line */
mvwprintw(fgui, 0, 0, "-->");
mvwprintw(fgui, 0, 3, fb[0].path);
for (i = 0; i < amount && i+find < fb[0].numents; i++)
{
p = fb[find+i].fpath + strlen(fb[find+i].fpath) - 1;
while(*p != '/') p--; p++; /* there will always be a / in it */
mvwprintw(fgui, i+1, 1, p);
}
/* highlight the cursor line */
mvwprintw(fgui, cursor, 0, ">");
}
/* This controls all of the logic for saving a file, when it is done, it
returns the file name to where to save the game. */
char* FSGUI(void)
{
char *file = NULL;
StopTimer();
file = FSelector();
StartTimer();
return file;
}
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