GODOT IS OPEN SOURCE

1 files changed, 497 insertions, 0 deletions

diff --git a/core/os/file_access.cpp b/core/os/file_access.cpp
new file mode 100644
index 0000000000..23250a7345
--- /dev/null
+++ b/core/os/file_access.cpp
@@ -0,0 +1,497 @@
+/*************************************************************************/
+/*  file_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 "file_access.h"
+#include "globals.h"
+#include "os/os.h"
+#include "core/io/marshalls.h"
+#include "io/md5.h"
+#include "core/io/file_access_pack.h"
+
+FileAccess::CreateFunc FileAccess::create_func[ACCESS_MAX]={0,0};
+
+
+bool FileAccess::backup_save=false;
+
+FileAccess *FileAccess::create(AccessType p_access){
+
+	ERR_FAIL_COND_V( !create_func, 0 );
+	ERR_FAIL_INDEX_V( p_access,ACCESS_MAX, 0 );
+
+	FileAccess *ret = create_func[p_access]();
+	ret->_set_access_type(p_access);
+	return ret;
+}
+
+bool FileAccess::exists(const String& p_name) {
+
+	if (PackedData::get_singleton()->has_path(p_name))
+		return true;
+
+	FileAccess *f=open(p_name,READ);
+	if (!f)
+		return false;
+	memdelete(f);
+	return true;
+
+
+}
+
+void FileAccess::_set_access_type(AccessType p_access) {
+
+	_access_type = p_access;
+};
+
+FileAccess *FileAccess::create_for_path(const String& p_path) {
+
+	FileAccess *ret=NULL;
+	if (p_path.begins_with("res://")) {
+
+		ret = create(ACCESS_RESOURCES);
+	} else if (p_path.begins_with("user://")) {
+
+		ret = create(ACCESS_USERDATA);
+
+	} else {
+
+		ret = create(ACCESS_FILESYSTEM);
+	}
+
+	return ret;
+
+
+}
+
+Error FileAccess::reopen(const String& p_path, int p_mode_flags) {
+
+	return _open(p_path, p_mode_flags);
+};
+
+
+FileAccess *FileAccess::open(const String& p_path, int p_mode_flags, Error *r_error) {
+
+	//try packed data first
+
+	FileAccess *ret=NULL;
+	if (!(p_mode_flags&WRITE) && PackedData::get_singleton() && !PackedData::get_singleton()->is_disabled()) {
+		ret = PackedData::get_singleton()->try_open_path(p_path);
+        if (ret) {
+			if (r_error)
+				*r_error=OK;
+			return ret;
+		}
+	}
+
+	ret=create_for_path(p_path);
+	Error err = ret->_open(p_path,p_mode_flags);
+
+	if (r_error)
+		*r_error=err;
+	if (err!=OK) {
+
+		memdelete(ret);
+		ret=NULL;
+	}
+
+	return ret;
+}
+
+
+FileAccess::CreateFunc FileAccess::get_create_func(AccessType p_access) {
+
+	return create_func[p_access];
+};
+
+String FileAccess::fix_path(const String& p_path) const {
+	//helper used by file accesses that use a single filesystem
+
+	String r_path = p_path.replace("\\", "/");
+
+	switch(_access_type) {
+
+		case ACCESS_RESOURCES: {
+
+			if (Globals::get_singleton()) {
+				if (r_path.begins_with("res://")) {
+
+					String resource_path = Globals::get_singleton()->get_resource_path();
+					if (resource_path != "") {
+
+						return r_path.replace("res:/",resource_path);
+					};
+					return r_path.replace("res://", "");
+				}
+			}
+
+
+		} break;
+		case ACCESS_USERDATA: {
+
+
+			if (r_path.begins_with("user://")) {
+
+				String data_dir=OS::get_singleton()->get_data_dir();
+				if (data_dir != "") {
+
+					return r_path.replace("user:/",data_dir);
+				};
+				return r_path.replace("user://", "");
+			}
+
+		} break;
+		case ACCESS_FILESYSTEM: {
+
+			return r_path;
+		} break;
+	}
+	
+	return r_path;
+}
+
+/* these are all implemented for ease of porting, then can later be optimized */
+
+uint16_t FileAccess::get_16()const {
+	
+	uint16_t res;
+	uint8_t a,b;
+	
+	a=get_8();
+	b=get_8();
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+	
+	res=b;
+	res<<=8;
+	res|=a;
+	
+	return res;
+}
+uint32_t FileAccess::get_32() const{
+	
+	uint32_t res;
+	uint16_t a,b;
+	
+	a=get_16();
+	b=get_16();
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+	
+	res=b;
+	res<<=16;
+	res|=a;
+	
+	return res;	
+}
+uint64_t FileAccess::get_64()const {
+	
+	uint64_t res;
+	uint32_t a,b;
+	
+	a=get_32();
+	b=get_32();
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+	
+	res=b;
+	res<<=32;
+	res|=a;
+	
+	return res;	
+	
+}
+
+float FileAccess::get_float() const {
+
+	MarshallFloat m;
+	m.i = get_32();
+	return m.f;
+};
+
+real_t FileAccess::get_real() const {
+
+	if (real_is_double)
+		return get_double();
+	else
+		return get_float();
+
+}
+
+double FileAccess::get_double() const {
+
+	MarshallDouble m;
+	m.l = get_64();
+	return m.d;
+};
+
+String FileAccess::get_line() const {
+
+	CharString line;
+
+	CharType c=get_8();
+	
+	while(!eof_reached()) {
+	
+		if (c=='\n' || c=='\0') {
+			line.push_back(0);
+			return String::utf8(line.get_data());
+		} else if (c!='\r')
+			line.push_back(c);
+				
+		c=get_8();
+	}
+	line.push_back(0);
+	return String::utf8(line.get_data());
+}
+
+Vector<String> FileAccess::get_csv_line() const {
+
+	String l;
+	int qc=0;
+	do {
+		l+=get_line();
+		qc=0;
+		for(int i=0;i<l.length();i++) {
+
+			if (l[i]=='"')
+				qc++;
+		}
+
+
+	} while (qc%2);
+
+	Vector<String> strings;
+
+	bool in_quote=false;
+	String current;
+	for(int i=0;i<l.length();i++) {
+
+		CharType c = l[i];
+		CharType s[2]={0,0};
+
+
+		if (!in_quote && c==',') {
+			strings.push_back(current);
+			current=String();
+		} else if (c=='"') {
+			if (l[i+1]=='"') {
+				s[0]='"';
+				current+=s;
+				i++;
+			} else {
+
+				in_quote=!in_quote;
+			}
+		} else {
+			s[0]=c;
+			current+=s;
+		}
+
+	}
+
+	strings.push_back(current);
+
+	return strings;
+}
+
+
+int FileAccess::get_buffer(uint8_t *p_dst,int p_length) const{
+	
+	int i=0;
+	for (i=0; i<p_length && !eof_reached(); i++)
+		p_dst[i]=get_8();
+
+	return i;
+}
+
+void FileAccess::store_16(uint16_t p_dest) {
+	
+	uint8_t a,b;
+	
+	a=p_dest&0xFF;
+	b=p_dest>>8;
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+		
+	store_8(a);
+	store_8(b);
+
+}
+void FileAccess::store_32(uint32_t p_dest) {
+	
+	
+	uint16_t a,b;
+	
+	a=p_dest&0xFFFF;
+	b=p_dest>>16;
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+		
+	store_16(a);
+	store_16(b);
+	
+}
+void FileAccess::store_64(uint64_t p_dest) {
+	
+	uint32_t a,b;
+	
+	a=p_dest&0xFFFFFFFF;
+	b=p_dest>>32;
+	
+	if (endian_swap) {
+		
+		SWAP( a,b );
+	}
+		
+	store_32(a);
+	store_32(b);
+	
+}
+
+void FileAccess::store_real(real_t p_real) {
+
+	if (sizeof(real_t)==4)
+		store_float(p_real);
+	else
+		store_double(p_real);
+
+}
+
+void FileAccess::store_float(float p_dest) {
+
+	MarshallFloat m;
+	m.f = p_dest;
+	store_32(m.i);
+};
+
+void FileAccess::store_double(double p_dest) {
+
+	MarshallDouble m;
+	m.d = p_dest;
+	store_64(m.l);
+};
+
+uint64_t FileAccess::get_modified_time(const String& p_file) {
+
+	FileAccess *fa = create_for_path(p_file);
+	ERR_FAIL_COND_V(!fa,0);
+
+	uint64_t mt = fa->_get_modified_time(p_file);
+	memdelete(fa);
+	return mt;
+}
+
+void FileAccess::store_string(const String& p_string) {
+
+	if (p_string.length()==0)
+		return;
+
+	CharString cs=p_string.utf8();
+	store_buffer((uint8_t*)&cs[0],cs.length());
+
+
+}
+void FileAccess::store_line(const String& p_line) {
+
+	store_string(p_line);
+	store_8('\n');
+}
+
+void FileAccess::store_buffer(const uint8_t *p_src,int p_length) {
+	
+	for (int i=0;i<p_length;i++)
+		store_8(p_src[i]);
+}
+
+Vector<uint8_t> FileAccess::get_file_as_array(const String& p_file) {
+
+	FileAccess *f=FileAccess::open(p_file,READ);
+	ERR_FAIL_COND_V(!f,Vector<uint8_t>());
+	Vector<uint8_t> data;
+	data.resize(f->get_len());
+	f->get_buffer(data.ptr(),data.size());
+	memdelete(f);
+	return data;
+
+
+}
+
+String FileAccess::get_md5(const String& p_file) {
+
+	FileAccess *f=FileAccess::open(p_file,READ);
+	if (!f)
+		return String();
+
+	MD5_CTX md5;
+	MD5Init(&md5);
+
+	unsigned char step[32768];
+
+	while(true) {
+
+		int br = f->get_buffer(step,32768);
+		if (br>0) {
+
+			MD5Update(&md5,step,br);
+		}
+		if (br < 4096)
+			break;
+
+	}
+
+	MD5Final(&md5);
+
+	String ret = String::md5(md5.digest);
+
+
+
+	memdelete(f);
+	return ret;
+
+}
+
+FileAccess::FileAccess() {
+
+	endian_swap=false;
+	real_is_double=false;
+	_access_type=ACCESS_FILESYSTEM;
+};