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Did some research, discovered implementing rewinddir() was as easy as setting a value to zero! Now we don't have to open and close the same folder, but instead just jump back to the beginning.

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This commit is contained in:
toasterbabe 2017-04-29 16:40:07 +01:00
parent 66f56bbba3
commit 055b59f6fb
1 changed files with 28 additions and 4 deletions
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32
src/filesrch.c
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@ -256,6 +256,28 @@ readdir (DIR * dirp)
return (struct dirent *) 0;
}
/*
* rewinddir
*
* Makes the next readdir start from the beginning.
*/
int
rewinddir (DIR * dirp)
{
errno = 0;
/* Check for valid DIR struct. */
if (!dirp)
{
errno = EFAULT;
return -1;
}
dirp->dd_stat = 0;
return 0;
}
/*
* closedir
*
@ -537,12 +559,11 @@ boolean preparefilemenu(boolean samemenu)
}
}
closedir(dirhandle); // I don't know how to go back to the start of the folder without just opening and closing... if there's a way, it doesn't appear to be easily manipulatable
if (!sizedirmenu)
{
if (tempname)
Z_Free(tempname);
closedir(dirhandle);
return false;
}
@ -554,9 +575,12 @@ boolean preparefilemenu(boolean samemenu)
}
if (!(dirmenu = Z_Realloc(dirmenu, sizedirmenu*sizeof(char *), PU_STATIC, NULL)))
{
closedir(dirhandle); // just in case
I_Error("Ran out of memory whilst preparing add-ons menu");
}
dirhandle = opendir(menupath);
rewinddir(dirhandle);
while ((pos+folderpos) < sizedirmenu)
{
@ -635,7 +659,7 @@ boolean preparefilemenu(boolean samemenu)
dirmenu[0] = Z_StrDup("\1\5UP...");
menupath[menupathindex[menudepthleft]] = 0;
sizedirmenu = (numfolders+pos); // crash prevention if things change between openings somehow
sizedirmenu = (numfolders+pos); // just in case things shrink between opening and rewind
if (tempname)
{