mirror of
https://git.code.sf.net/p/quake/quake2forge
synced 2024-12-12 21:51:58 +00:00
f4fa61bf44
by. Bwahaha.
232 lines
4.8 KiB
C
232 lines
4.8 KiB
C
/*
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Copyright (C) 1997-2001 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include "../linux/glob.h"
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#include "../qcommon/qcommon.h"
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//===============================================================================
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byte *membase;
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int maxhunksize;
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int curhunksize;
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void *Hunk_Begin (int maxsize)
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{
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// reserve a huge chunk of memory, but don't commit any yet
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maxhunksize = maxsize + sizeof(int);
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curhunksize = 0;
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membase = mmap(0, maxhunksize, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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if (membase == NULL || membase == (byte *)-1)
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Sys_Error("unable to virtual allocate %d bytes", maxsize);
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*((int *)membase) = curhunksize;
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return membase + sizeof(int);
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}
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void *Hunk_Alloc (int size)
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{
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byte *buf;
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// round to cacheline
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size = (size+31)&~31;
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if (curhunksize + size > maxhunksize)
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Sys_Error("Hunk_Alloc overflow");
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buf = membase + sizeof(int) + curhunksize;
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curhunksize += size;
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return buf;
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}
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int Hunk_End (void)
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{
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byte *n;
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n = mremap(membase, maxhunksize, curhunksize + sizeof(int), 0);
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if (n != membase)
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Sys_Error("Hunk_End: Could not remap virtual block (%d)", errno);
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*((int *)membase) = curhunksize + sizeof(int);
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return curhunksize;
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}
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void Hunk_Free (void *base)
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{
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byte *m;
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if (base) {
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m = ((byte *)base) - sizeof(int);
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if (munmap(m, *((int *)m)))
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Sys_Error("Hunk_Free: munmap failed (%d)", errno);
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}
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}
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//===============================================================================
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/*
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================
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Sys_Milliseconds
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================
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*/
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int curtime;
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int Sys_Milliseconds (void)
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{
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struct timeval tp;
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struct timezone tzp;
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static int secbase;
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gettimeofday(&tp, &tzp);
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if (!secbase)
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{
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secbase = tp.tv_sec;
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return tp.tv_usec/1000;
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}
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curtime = (tp.tv_sec - secbase)*1000 + tp.tv_usec/1000;
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return curtime;
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}
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void Sys_Mkdir (char *path)
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{
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mkdir (path, 0777);
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}
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char *strlwr (char *s)
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{
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char *str = s;
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while (*s) {
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*s = tolower(*s);
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s++;
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}
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return str;
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}
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//============================================
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static char findbase[MAX_OSPATH];
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static char findpath[MAX_OSPATH];
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static char findpattern[MAX_OSPATH];
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static DIR *fdir;
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static qboolean CompareAttributes(char *path, char *name,
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unsigned musthave, unsigned canthave )
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{
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struct stat st;
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char fn[MAX_OSPATH];
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// . and .. never match
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if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
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return false;
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#if 1
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sprintf(fn, "%s/%s", path, name);
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#else
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return true;
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#endif
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if (stat(fn, &st) == -1)
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return false; // shouldn't happen
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if ( ( st.st_mode & S_IFDIR ) && ( canthave & SFF_SUBDIR ) )
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return false;
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if ( ( musthave & SFF_SUBDIR ) && !( st.st_mode & S_IFDIR ) )
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return false;
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return true;
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}
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char *Sys_FindFirst (char *path, unsigned musthave, unsigned canhave)
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{
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struct dirent *d;
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char *p;
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if (fdir)
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Sys_Error ("Sys_BeginFind without close");
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// COM_FilePath (path, findbase);
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strcpy(findbase, path);
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if ((p = strrchr(findbase, '/')) != NULL) {
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*p = 0;
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strcpy(findpattern, p + 1);
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} else
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strcpy(findpattern, "*");
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if (strcmp(findpattern, "*.*") == 0)
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strcpy(findpattern, "*");
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if ((fdir = opendir(findbase)) == NULL)
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return NULL;
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while ((d = readdir(fdir)) != NULL) {
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if (!*findpattern || glob_match(findpattern, d->d_name)) {
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// if (*findpattern)
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// printf("%s matched %s\n", findpattern, d->d_name);
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if (CompareAttributes(findbase, d->d_name, musthave, canhave)) {
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sprintf (findpath, "%s/%s", findbase, d->d_name);
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return findpath;
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}
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}
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}
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return NULL;
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}
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char *Sys_FindNext (unsigned musthave, unsigned canhave)
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{
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struct dirent *d;
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if (fdir == NULL)
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return NULL;
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while ((d = readdir(fdir)) != NULL) {
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if (!*findpattern || glob_match(findpattern, d->d_name)) {
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// if (*findpattern)
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// printf("%s matched %s\n", findpattern, d->d_name);
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if (CompareAttributes(findbase, d->d_name, musthave, canhave)) {
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sprintf (findpath, "%s/%s", findbase, d->d_name);
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return findpath;
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}
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}
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}
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return NULL;
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}
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void Sys_FindClose (void)
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{
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if (fdir != NULL)
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closedir(fdir);
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fdir = NULL;
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}
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//============================================
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