0ad/source/ps/VFSUtil.cpp
olsner d0f7cb015c - Linux/GCC (as usual :P)
- Ported lockless code to gcc inline assembly
- A few new net messages (gather, attack, add waypoint)
- Support for new messages in network->entity order converter
- Implemented rudimentary JS interface for Interaction
- issueCommand JS API, connected to the network
- Removed Interaction stuff now replaced by JS
- And something in there should probably break VS builds :P

This was SVN commit r2316.
2005-05-18 05:32:09 +00:00

125 lines
2.9 KiB
C++
Executable File

#include "precompiled.h"
#include "VFSUtil.h"
#include "lib/res/vfs.h"
#include "lib/res/vfs_path.h"
#include "CLogger.h"
#define LOG_CATEGORY "vfs"
#include <deque>
using namespace VFSUtil;
// Because I'm lazy, and it saves a few lines of code in other places:
bool VFSUtil::FindFiles (const CStr& dirname, const char* filter, FileList& files)
{
files.clear();
Handle dir = vfs_open_dir(dirname);
if (dir <= 0)
{
LOG(ERROR, LOG_CATEGORY, "Error opening directory '%s' (%lld)", dirname.c_str(), dir);
return false;
}
int err;
vfsDirEnt entry;
while ((err = vfs_next_dirent(dir, &entry, filter)) == 0)
{
files.push_back(dirname+"/"+entry.name);
}
if (err != ERR_DIR_END)
{
LOG(ERROR, LOG_CATEGORY, "Error reading files from directory '%s' (%d)", dirname.c_str(), err);
return false;
}
vfs_close_dir(dir);
return true;
}
// call <cb> for each entry matching <user_filter> (see vfs_next_dirent) in
// directory <start_path>; if <recursive>, entries in subdirectories are
// also returned.
//
// note: EnumDirEntsCB path and ent are only valid during the callback.
int VFSUtil::EnumDirEnts(const CStr start_path, const char* user_filter,
bool recursive, EnumDirEntsCB cb, void* context)
{
// note: currently no need to return subdirectories,
// but enabling it isn't hard (we have to check for / anyway).
char filter_buf[VFS_MAX_PATH];
const char* filter = user_filter;
bool want_dir = true;
if(user_filter)
{
if(user_filter[0] != '/')
want_dir = false;
// we need subdirectories and the caller hasn't already requested them
if(recursive && !want_dir)
{
snprintf(filter_buf, sizeof(filter_buf), "/|%s", user_filter);
filter = filter_buf;
}
}
// note: FIFO queue instead of recursion is much more efficient
// (less stack usage; avoids seeks by reading all entries in a
// directory consecutively)
std::deque<CStr> dir_queue;
dir_queue.push_back(start_path);
// for each directory:
do
{
// get current directory path from queue
// note: can't refer to the queue contents - those are invalidated
// as soon as a directory is pushed onto it.
char path[VFS_MAX_PATH];
path_append(path, dir_queue.front().c_str(), "");
// vfs_open_dir checks this, so ignore failure
const size_t path_len = strlen(path);
dir_queue.pop_front();
Handle hdir = vfs_open_dir(path);
if(hdir <= 0)
{
debug_warn("EnumFiles: vfs_open_dir failed");
continue;
}
// for each entry (file, subdir) in directory:
vfsDirEnt ent;
while(vfs_next_dirent(hdir, &ent, filter) == 0)
{
// build complete path (vfsDirEnt only stores entry name)
strcpy_s(path+path_len, VFS_MAX_PATH-path_len, ent.name);
if(VFS_ENT_IS_DIR(ent))
{
if(recursive)
dir_queue.push_back(path);
if(want_dir)
cb(path, &ent, context);
}
else
cb(path, &ent, context);
}
vfs_close_dir(hdir);
}
while(!dir_queue.empty());
return 0;
}