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godot/core/os/dir_access.cpp
Juan Linietsky 0b806ee0fc GODOT IS OPEN SOURCE
2014-02-09 22:10:30 -03:00

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/*************************************************************************/
/* dir_access.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "dir_access.h"
#include "os/file_access.h"
#include "os/memory.h"
#include "os/os.h"
#include "globals.h"
String DirAccess::_get_root_path() const {
switch(_access_type) {
case ACCESS_RESOURCES: return Globals::get_singleton()->get_resource_path();
case ACCESS_USERDATA: return OS::get_singleton()->get_data_dir();
default: return "";
}
return "";
}
String DirAccess::_get_root_string() const {
switch(_access_type) {
case ACCESS_RESOURCES: return "res://";
case ACCESS_USERDATA: return "user://";
default: return "";
}
return "";
}
static Error _erase_recursive(DirAccess *da) {
List<String> dirs;
List<String> files;
da->list_dir_begin();
String n = da->get_next();
while(n!=String()) {
if (n!="." && n!="..") {
if (da->current_is_dir())
dirs.push_back(n);
else
files.push_back(n);
}
n=da->get_next();
}
da->list_dir_end();
for(List<String>::Element *E=dirs.front();E;E=E->next()) {
Error err = da->change_dir(E->get());
if (err==OK) {
err = _erase_recursive(da);
if (err) {
print_line("err recurso "+E->get());
return err;
}
err = da->change_dir("..");
if (err) {
print_line("no go back "+E->get());
return err;
}
err = da->remove(da->get_current_dir().plus_file(E->get()));
if (err) {
print_line("no remove dir"+E->get());
return err;
}
} else {
print_line("no change to "+E->get());
return err;
}
}
for(List<String>::Element *E=files.front();E;E=E->next()) {
Error err = da->remove(da->get_current_dir().plus_file(E->get()));
if (err) {
print_line("no remove file"+E->get());
return err;
}
}
return OK;
}
Error DirAccess::erase_contents_recursive() {
return _erase_recursive(this);
}
Error DirAccess::make_dir_recursive(String p_dir) {
if (p_dir.length() < 1) {
return OK;
};
Globals* g = Globals::get_singleton();
String cur = normalize_path(g->globalize_path(get_current_dir()));
if (cur[cur.length()-1] != '/') {
cur = cur + "/";
};
String dir = normalize_path(g->globalize_path(p_dir));
if (dir.length() < 1) {
return OK;
};
if (dir[dir.length()-1] != '/') {
dir = dir + "/";
};
ERR_FAIL_COND_V(dir.find(cur) != 0, FAILED);
String rel = dir.substr(cur.length(), (dir.length() - cur.length()));
int pos = 0;
while (pos < rel.length()) {
int n = rel.find("/", pos);
if (n < 0) {
n = rel.length();
};
pos = n + 1;
if (pos > 1) {
Error err = make_dir(rel.substr(0, pos -1));
if (err != OK && err != ERR_ALREADY_EXISTS) {
ERR_FAIL_V(err);
};
};
};
return OK;
};
String DirAccess::normalize_path(const String &p_path) {
static const int max_depth = 64;
int pos_stack[max_depth];
int curr = 0;
int pos = 0;
String cur_dir;
do {
if (curr >= max_depth) {
ERR_PRINT("Directory depth too deep.");
return "";
};
int start = pos;
int next = p_path.find("/", pos);
if (next < 0) {
next = p_path.length() - 1;
};
pos = next + 1;
cur_dir = p_path.substr(start, next - start);
if (cur_dir == "" || cur_dir == ".") {
continue;
};
if (cur_dir == "..") {
if (curr > 0) { // pop a dir
curr -= 2;
};
continue;
};
pos_stack[curr++] = start;
pos_stack[curr++] = next;
} while (pos < p_path.length());
String path;
if (p_path[0] == '/') {
path = "/";
};
int i=0;
while (i < curr) {
int start = pos_stack[i++];
while ( ((i+1)<curr) && (pos_stack[i] == pos_stack[i+1]) ) {
++i;
};
path = path + p_path.substr(start, (pos_stack[i++] - start) + 1);
};
return path;
};
String DirAccess::get_next(bool* p_is_dir) {
String next=get_next();
if (p_is_dir)
*p_is_dir=current_is_dir();
return next;
}
String DirAccess::fix_path(String p_path) const {
switch(_access_type) {
case ACCESS_RESOURCES: {
if (Globals::get_singleton()) {
if (p_path.begins_with("res://")) {
String resource_path = Globals::get_singleton()->get_resource_path();
if (resource_path != "") {
return p_path.replace("res:/",resource_path);
};
return p_path.replace("res://", "");
}
}
} break;
case ACCESS_USERDATA: {
if (p_path.begins_with("user://")) {
String data_dir=OS::get_singleton()->get_data_dir();
if (data_dir != "") {
return p_path.replace("user:/",data_dir);
};
return p_path.replace("user://", "");
}
} break;
case ACCESS_FILESYSTEM: {
return p_path;
} break;
}
return p_path;
}
DirAccess::CreateFunc DirAccess::create_func[ACCESS_MAX]={0,0,0};
DirAccess *DirAccess::create_for_path(const String& p_path) {
DirAccess *da=NULL;
if (p_path.begins_with("res://")) {
da=create(ACCESS_RESOURCES);
} else if (p_path.begins_with("user://")) {
da=create(ACCESS_USERDATA);
} else {
da=create(ACCESS_FILESYSTEM);
}
return da;
}
DirAccess *DirAccess::open(const String& p_path,Error *r_error) {
DirAccess *da=create_for_path(p_path);
ERR_FAIL_COND_V(!da,NULL);
Error err = da->change_dir(p_path);
if (r_error)
*r_error=err;
if (err!=OK) {
memdelete(da);
return NULL;
}
return da;
}
DirAccess *DirAccess::create(AccessType p_access) {
DirAccess * da = create_func[p_access]?create_func[p_access]():NULL;
if (da) {
da->_access_type=p_access;
}
return da;
};
String DirAccess::get_full_path(const String& p_path,AccessType p_access) {
DirAccess *d=DirAccess::create(p_access);
if (!d)
return p_path;
d->change_dir(p_path);
String full=d->get_current_dir();
memdelete(d);
return full;
}
Error DirAccess::copy(String p_from,String p_to) {
//printf("copy %s -> %s\n",p_from.ascii().get_data(),p_to.ascii().get_data());
Error err;
FileAccess *fsrc = FileAccess::open(p_from, FileAccess::READ,&err);
if (err) {
ERR_FAIL_COND_V( err, err );
}
FileAccess *fdst = FileAccess::open(p_to, FileAccess::WRITE,&err );
if (err) {
fsrc->close();
memdelete( fsrc );
ERR_FAIL_COND_V( err, err );
}
fsrc->seek_end(0);
int size = fsrc->get_pos();
fsrc->seek(0);
err = OK;
while(size--) {
if (fsrc->get_error()!=OK) {
err= fsrc->get_error();
break;
}
if (fdst->get_error()!=OK) {
err= fdst->get_error();
break;
}
fdst->store_8( fsrc->get_8() );
}
memdelete(fsrc);
memdelete(fdst);
return err;
}
DirAccess::DirAccess(){
_access_type=ACCESS_FILESYSTEM;
}
DirAccess::~DirAccess() {
}
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