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authorChaosus <chaosus89@gmail.com>2019-04-02 10:07:33 +0300
committerChaosus <chaosus89@gmail.com>2019-04-05 15:15:40 +0300
commit8d12dfa24d70b6a86660baaafb83781d6dea4680 (patch)
tree0c14901fc343acf8a2b935ed5b036270eed96ff0 /drivers
parent29a1202d39b0efb617a8ff4ee9764612f3e0124f (diff)
Fix File opened with READ_WRITE on Windows
To allows use read and write anytime and in any order
Diffstat (limited to 'drivers')
-rw-r--r--drivers/windows/file_access_windows.cpp33
-rw-r--r--drivers/windows/file_access_windows.h1
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/windows/file_access_windows.cpp b/drivers/windows/file_access_windows.cpp
index babb393dcb..c4c5e0d709 100644
--- a/drivers/windows/file_access_windows.cpp
+++ b/drivers/windows/file_access_windows.cpp
@@ -197,12 +197,14 @@ void FileAccessWindows::seek(size_t p_position) {
last_error = OK;
if (fseek(f, p_position, SEEK_SET))
check_errors();
+ prev_op = 0;
}
void FileAccessWindows::seek_end(int64_t p_position) {
ERR_FAIL_COND(!f);
if (fseek(f, p_position, SEEK_END))
check_errors();
+ prev_op = 0;
}
size_t FileAccessWindows::get_position() const {
@@ -234,6 +236,12 @@ bool FileAccessWindows::eof_reached() const {
uint8_t FileAccessWindows::get_8() const {
ERR_FAIL_COND_V(!f, 0);
+ if (flags == READ_WRITE || flags == WRITE_READ) {
+ if (prev_op == WRITE) {
+ fflush(f);
+ }
+ prev_op = READ;
+ }
uint8_t b;
if (fread(&b, 1, 1, f) == 0) {
check_errors();
@@ -246,6 +254,12 @@ uint8_t FileAccessWindows::get_8() const {
int FileAccessWindows::get_buffer(uint8_t *p_dst, int p_length) const {
ERR_FAIL_COND_V(!f, -1);
+ if (flags == READ_WRITE || flags == WRITE_READ) {
+ if (prev_op == WRITE) {
+ fflush(f);
+ }
+ prev_op = READ;
+ }
int read = fread(p_dst, 1, p_length, f);
check_errors();
return read;
@@ -260,16 +274,34 @@ void FileAccessWindows::flush() {
ERR_FAIL_COND(!f);
fflush(f);
+ if (prev_op == WRITE)
+ prev_op = 0;
}
void FileAccessWindows::store_8(uint8_t p_dest) {
ERR_FAIL_COND(!f);
+ if (flags == READ_WRITE || flags == WRITE_READ) {
+ if (prev_op == READ) {
+ if (last_error != ERR_FILE_EOF) {
+ fseek(f, 0, SEEK_CUR);
+ }
+ }
+ prev_op = WRITE;
+ }
fwrite(&p_dest, 1, 1, f);
}
void FileAccessWindows::store_buffer(const uint8_t *p_src, int p_length) {
ERR_FAIL_COND(!f);
+ if (flags == READ_WRITE || flags == WRITE_READ) {
+ if (prev_op == READ) {
+ if (last_error != ERR_FILE_EOF) {
+ fseek(f, 0, SEEK_CUR);
+ }
+ }
+ prev_op = WRITE;
+ }
ERR_FAIL_COND(fwrite(p_src, 1, p_length, f) != p_length);
}
@@ -310,6 +342,7 @@ uint64_t FileAccessWindows::_get_modified_time(const String &p_file) {
FileAccessWindows::FileAccessWindows() :
f(NULL),
flags(0),
+ prev_op(0),
last_error(OK) {
}
FileAccessWindows::~FileAccessWindows() {
diff --git a/drivers/windows/file_access_windows.h b/drivers/windows/file_access_windows.h
index c105eb5265..35b1f0b2d8 100644
--- a/drivers/windows/file_access_windows.h
+++ b/drivers/windows/file_access_windows.h
@@ -47,6 +47,7 @@ class FileAccessWindows : public FileAccess {
FILE *f;
int flags;
void check_errors() const;
+ mutable int prev_op;
mutable Error last_error;
String path;
String path_src;