X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fio%2Ffile.cpp;h=d4b2da3454f0a29e3ba32808256780ba6aa8954d;hp=727542fe1d15baa3fbdcdc6678be9914e82d0ade;hb=3f7aa81d9212811b323d89949adcccda212cbed3;hpb=8f2711fba7a2817840038630d9cf9a2060ecbe8e

diff --git a/source/io/file.cpp b/source/io/file.cpp
index 727542f..d4b2da3 100644
--- a/source/io/file.cpp
+++ b/source/io/file.cpp
@@ -3,9 +3,10 @@
 #include <fcntl.h>
 #include <unistd.h>
 #endif
+#include <msp/strings/format.h>
 #include <msp/core/systemerror.h>
-#include <msp/strings/formatter.h>
 #include "file.h"
+#include "handle_private.h"
 
 using namespace std;
 
@@ -16,7 +17,9 @@ File::File(const string &fn, Mode m, CreateMode cm)
 {
 	if(!(m&M_RDWR))
 		throw invalid_argument("File::File mode");
-	if(cm&~(C_CREATE|C_TRUNCATE))
+	if(cm&~(C_CREATE|C_TRUNCATE|C_EXCLUSIVE))
+		throw invalid_argument("File::File create");
+	if((cm&C_EXCLUSIVE) && (!(cm&C_CREATE) || (cm&C_TRUNCATE)))
 		throw invalid_argument("File::File create");
 
 	mode = m;
@@ -36,16 +39,19 @@ File::File(const string &fn, Mode m, CreateMode cm)
 		case C_NONE:     create_flags = OPEN_EXISTING; break;
 		case C_CREATE:   create_flags = OPEN_ALWAYS; break;
 		case C_TRUNCATE: create_flags = TRUNCATE_EXISTING; break;
-		case C_CREATE+C_TRUNCATE: create_flags = CREATE_ALWAYS; break;
+		case C_OVERWRITE: create_flags = CREATE_ALWAYS; break;
+		case C_NEW:      create_flags = CREATE_NEW; break;
 		}
 	}
 
-	handle = CreateFile(fn.c_str(), flags, 0, 0, create_flags, FILE_ATTRIBUTE_NORMAL, 0);
-	if(handle==INVALID_HANDLE_VALUE)
+	*handle = CreateFile(fn.c_str(), flags, 0, 0, create_flags, FILE_ATTRIBUTE_NORMAL, 0);
+	if(!handle)
 	{
 		int err = GetLastError();
 		if(err==ERROR_FILE_NOT_FOUND)
 			throw file_not_found(fn);
+		else if(err==ERROR_FILE_EXISTS)
+			throw file_already_exists(fn);
 		else
 			throw system_error(format("CreateFile(%s)", fn), err);
 	}
@@ -65,60 +71,42 @@ File::File(const string &fn, Mode m, CreateMode cm)
 			flags |= O_CREAT;
 		if(cm&C_TRUNCATE)
 			flags |= O_TRUNC;
+		if(cm&C_EXCLUSIVE)
+			flags |= O_EXCL;
 	}
 	if(mode&M_APPEND)
 		flags |= O_APPEND;
 	if(mode&M_NONBLOCK)
 		flags |= O_NONBLOCK;
 
-	handle = ::open(fn.c_str(), flags, 0666);
-	if(handle==-1)
+	*handle = ::open(fn.c_str(), flags, 0666);
+	if(!handle)
 	{
 		int err = errno;
 		if(err==ENOENT)
 			throw file_not_found(fn);
+		else if(err==EEXIST)
+			throw file_already_exists(fn);
 		else
 			throw system_error(format("open(%s)", fn), err);
 	}
 #endif
-
-	set_events(P_INPUT);
 }
 
 File::~File()
 {
-	close();
-}
-
-void File::close()
-{
-	if(handle==MSP_IO_INVALID_HANDLE)
-		return;
-
-	set_events(P_NONE);
-
 	signal_flush_required.emit();
-
-#ifdef WIN32
-	CloseHandle(handle);
-#else
-	::close(handle);
-#endif
-
-	handle = MSP_IO_INVALID_HANDLE;
-	signal_closed.emit();
+	sys_close(handle);
 }
 
 void File::set_block(bool b)
 {
-	check_access(M_NONE);
-
 	mode = (mode&~M_NONBLOCK);
 	if(b)
 		mode = (mode|M_NONBLOCK);
 #ifndef WIN32
-	int flags = fcntl(handle, F_GETFD);
-	fcntl(handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
+	int flags = fcntl(*handle, F_GETFD);
+	fcntl(*handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
 #endif
 }
 
@@ -132,21 +120,9 @@ unsigned File::do_write(const char *buf, unsigned size)
 #ifdef WIN32
 	if(mode&M_APPEND)
 		seek(0, S_END);
-	DWORD ret;
-	if(WriteFile(handle, buf, size, &ret, 0)==0)
-		throw system_error("WriteFile");
-#else
-	int ret = ::write(handle, buf, size);
-	if(ret==-1)
-	{
-		if(errno==EAGAIN)
-			return 0;
-		else
-			throw system_error("write");
-	}
 #endif
 
-	return ret;
+	return sys_write(handle, buf, size);
 }
 
 unsigned File::do_read(char *buf, unsigned size)
@@ -156,26 +132,9 @@ unsigned File::do_read(char *buf, unsigned size)
 	if(size==0)
 		return 0;
 
-#ifdef WIN32
-	DWORD ret;
-	if(ReadFile(handle, buf, size, &ret, 0)==0)
-		throw system_error("ReadFile");
-#else
-	int ret = ::read(handle, buf, size);
-	if(ret==-1)
-	{
-		if(errno==EAGAIN)
-			return 0;
-		else
-			throw system_error("read");
-	}
-#endif
-
+	unsigned ret = sys_read(handle, buf, size);
 	if(ret==0)
-	{
-		eof_flag = true;
-		signal_end_of_file.emit();
-	}
+		set_eof();
 
 	return ret;
 }
@@ -185,53 +144,28 @@ void File::sync()
 #ifndef WIN32
 	signal_flush_required.emit();
 
-	fsync(handle);
+	fsync(*handle);
 #endif
 }
 
-int File::seek(int off, SeekType st)
+SeekOffset File::seek(SeekOffset off, SeekType type)
 {
-	check_access(M_NONE);
-
 	signal_flush_required.emit();
-
-	int type = sys_seek_type(st);
-#ifdef WIN32
-	DWORD ret = SetFilePointer(handle, off, 0, type);
-	if(ret==INVALID_SET_FILE_POINTER)
-		throw system_error("SetFilePointer");
-#else
-	int ret = lseek(handle, off, type);
-	if(ret==-1)
-		throw system_error("lseek");
-#endif
-
+	off = sys_seek(handle, off, type);
 	eof_flag = false;
 
-	return ret;
+	return off;
 }
 
-int File::tell() const
+SeekOffset File::tell() const
 {
-	check_access(M_NONE);
-
-#ifdef WIN32
-	DWORD ret = SetFilePointer(handle, 0, 0, FILE_CURRENT);
-	if(ret==INVALID_SET_FILE_POINTER)
-		throw system_error("SetFilePointer");
-#else
-	int ret = lseek(handle, 0, SEEK_CUR);
-	if(ret==-1)
-		throw system_error("lseek");
-#endif
-
-	return ret;
+	return sys_seek(const_cast<Handle &>(handle), 0, S_CUR);
 }
 
-void File::check_access(Mode m) const
+const Handle &File::get_handle(Mode m)
 {
-	if(handle==MSP_IO_INVALID_HANDLE || (m && !(mode&m)))
-		throw invalid_access(m);
+	check_access(m);
+	return handle;
 }
 
 } // namespace IO