-#ifndef WIN32
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#endif
-#include <msp/core/systemerror.h>
-#include <msp/strings/formatter.h>
#include "file.h"
+#include "handle_private.h"
using namespace std;
{
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;
-#ifdef WIN32
- int flags = 0;
- int create_flags = OPEN_EXISTING;
-
- if(mode&M_READ)
- flags |= GENERIC_READ;
- else if(mode&M_WRITE)
- {
- flags |= GENERIC_WRITE;
-
- switch(static_cast<int>(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;
- }
- }
-
- handle = CreateFile(fn.c_str(), flags, 0, 0, create_flags, FILE_ATTRIBUTE_NORMAL, 0);
- if(handle==INVALID_HANDLE_VALUE)
- {
- int err = GetLastError();
- if(err==ERROR_FILE_NOT_FOUND)
- throw file_not_found(fn);
- else
- throw system_error(format("CreateFile(%s)", fn), err);
- }
-#else
- int flags = 0;
- switch(mode&M_RDWR)
- {
- case M_READ: flags |= O_RDONLY; break;
- case M_WRITE: flags |= O_WRONLY; break;
- case M_RDWR: flags |= O_RDWR; break;
- default:;
- }
-
- if(mode&M_WRITE)
- {
- if(cm&C_CREATE)
- flags |= O_CREAT;
- if(cm&C_TRUNCATE)
- flags |= O_TRUNC;
- }
- if(mode&M_APPEND)
- flags |= O_APPEND;
- if(mode&M_NONBLOCK)
- flags |= O_NONBLOCK;
-
- handle = ::open(fn.c_str(), flags, 0666);
- if(handle==-1)
- {
- int err = errno;
- if(err==ENOENT)
- throw file_not_found(fn);
- else
- throw system_error(format("open(%s)", fn), err);
- }
-#endif
-
- set_events(P_INPUT);
+ platform_init(fn, cm);
}
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));
-#endif
+ mode = b?(mode&~M_NONBLOCK):(mode|M_NONBLOCK);
+ sys_set_blocking(handle, b);
}
unsigned File::do_write(const char *buf, unsigned size)
if(size==0)
return 0;
-#ifdef WIN32
+#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)
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;
}
-void File::sync()
+SeekOffset File::seek(SeekOffset off, SeekType type)
{
-#ifndef WIN32
signal_flush_required.emit();
+ off = sys_seek(handle, off, type);
+ eof_flag = false;
- fsync(handle);
-#endif
+ return off;
}
-unsigned File::seek(int off, SeekType st)
+SeekOffset File::tell() const
{
- check_access(M_NONE);
+ return sys_seek(const_cast<Handle &>(handle), 0, S_CUR);
+}
- signal_flush_required.emit();
+const Handle &File::get_handle(Mode m)
+{
+ check_access(m);
+ return handle;
+}
- 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
- off_t ret = lseek(handle, off, type);
- if(ret==(off_t)-1)
- throw system_error("lseek");
-#endif
- eof_flag = false;
+BufferedFile::BufferedFile(const string &fn, Mode m, File::CreateMode cm):
+ file(fn, m, cm),
+ buffer(file),
+ position(0)
+{
+ mode = m;
+ file.signal_end_of_file.connect(sigc::mem_fun(this, &BufferedFile::set_eof));
+}
+unsigned BufferedFile::do_write(const char *buf, unsigned size)
+{
+ unsigned ret = buffer.write(buf, size);
+ position += ret;
return ret;
}
-unsigned File::tell() const
+unsigned BufferedFile::do_read(char *buf, unsigned size)
{
- 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
- off_t ret = lseek(handle, 0, SEEK_CUR);
- if(ret==(off_t)-1)
- throw system_error("lseek");
-#endif
+ unsigned ret = buffer.read(buf, size);
+ position += ret;
+ return ret;
+}
+
+unsigned BufferedFile::put(char c)
+{
+ unsigned ret = buffer.put(c);
+ position += ret;
+ return ret;
+}
+
+bool BufferedFile::getline(string &line)
+{
+ bool ret = buffer.getline(line);
+ if(ret)
+ position += line.size();
+ return ret;
+}
+int BufferedFile::get()
+{
+ int ret = buffer.get();
+ if(ret>=0)
+ ++position;
return ret;
}
-void File::check_access(Mode m) const
+SeekOffset BufferedFile::seek(SeekOffset offset, SeekType type)
{
- if(handle==MSP_IO_INVALID_HANDLE || (m && !(mode&m)))
- throw invalid_access(m);
+ if(type==S_CUR)
+ {
+ offset += position;
+ type = S_BEG;
+ }
+
+ signal_flush_required.emit();
+ position = file.seek(offset, type);
+ eof_flag = false;
+ return position;
}
} // namespace IO
projects / libs / core.git / blobdiff