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file_io, DiskImage, sharpmz: Replace fd with FILE*

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Replace file descriptor with a file stream in preparation for supporting
zipped files.

The API to miniz requires the use of file streams and since a file
descriptor can easily be extracted from a stream using `fileno` it's
much more convenient to use file streams everywhere.
This commit is contained in:
David Holm
2018-12-31 19:27:59 +01:00
parent 1bc427bc76
commit 0a0341bf81
5 changed files with 41 additions and 56 deletions
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46
file_io.cpp
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@@ -36,10 +36,10 @@ static char full_path[1200];
void FileClose(fileTYPE *file)
{
if (file->fd > 0)
if (file->filp)
{
//printf("closing %d\n", file->fd);
close(file->fd);
//printf("closing %p\n", file->filp);
fclose(file->filp);
if (file->type == 1)
{
if (file->name[0] == '/')
@@ -49,7 +49,7 @@ void FileClose(fileTYPE *file)
file->type = 0;
}
}
file->fd = -1;
file->filp = nullptr;
}
int FileOpenEx(fileTYPE *file, const char *name, int mode, char mute)
@@ -71,11 +71,19 @@ int FileOpenEx(fileTYPE *file, const char *name, int mode, char mute)
char *p = strrchr(full_path, '/');
strcpy(file->name, (mode == -1) ? full_path : p+1);
file->fd = (mode == -1) ? shm_open("/vtrd", O_CREAT | O_RDWR | O_TRUNC, 0777) : open(full_path, mode, 0777);
if (file->fd <= 0)
int fd = (mode == -1) ? shm_open("/vtrd", O_CREAT | O_RDWR | O_TRUNC, 0777) : open(full_path, mode, 0777);
if (fd <= 0)
{
if(!mute) printf("FileOpenEx(open) File:%s, error: %d.\n", full_path, file->fd);
file->fd = -1;
if(!mute) printf("FileOpenEx(open) File:%s, error: %s.\n", full_path, strerror(errno));
return 0;
}
const char *fmode = mode & O_RDWR ? "w+" : "r";
file->filp = fdopen(fd, fmode);
if (!file->filp)
{
if(!mute) printf("FileOpenEx(fdopen) File:%s, error: %s.\n", full_path, strerror(errno));
close(fd);
return 0;
}
@@ -89,7 +97,7 @@ int FileOpenEx(fileTYPE *file, const char *name, int mode, char mute)
else
{
struct stat64 st;
int ret = fstat64(file->fd, &st);
int ret = fstat64(fd, &st);
if (ret < 0)
{
if (!mute) printf("FileOpenEx(fstat) File:%s, error: %d.\n", full_path, ret);
@@ -108,10 +116,10 @@ int FileOpenEx(fileTYPE *file, const char *name, int mode, char mute)
__off64_t FileGetSize(fileTYPE *file)
{
if (file->fd <= 0) return 0;
if (!file->filp) return 0;
struct stat64 st;
int ret = fstat64(file->fd, &st);
int ret = fstat64(fileno(file->filp), &st);
return (ret < 0) ? 0 : st.st_size;
}
@@ -122,11 +130,11 @@ int FileOpen(fileTYPE *file, const char *name, char mute)
int FileNextSector(fileTYPE *file)
{
__off64_t newoff = lseek64(file->fd, file->offset + 512, SEEK_SET);
__off64_t newoff = lseek64(fileno(file->filp), file->offset + 512, SEEK_SET);
if (newoff != file->offset + 512)
{
//printf("Fail to seek to next sector. File: %s.\n", file->name);
lseek64(file->fd, file->offset, SEEK_SET);
lseek64(fileno(file->filp), file->offset, SEEK_SET);
return 0;
}
@@ -136,7 +144,7 @@ int FileNextSector(fileTYPE *file)
int FileSeek(fileTYPE *file, __off64_t offset, int origin)
{
__off64_t newoff = lseek64(file->fd, offset, origin);
__off64_t newoff = lseek64(fileno(file->filp), offset, origin);
if(newoff<0)
{
printf("Fail to seek the file.\n");
@@ -174,7 +182,7 @@ int FileReadEx(fileTYPE *file, void *pBuffer, int nSize)
{
for (int i = 0; i < nSize; i++)
{
int ret = read(file->fd, tmpbuff, 512);
int ret = fread(tmpbuff, 512, 1, file->filp);
if (ret < 0)
{
printf("FileRead error(%d).\n", ret);
@@ -188,7 +196,7 @@ int FileReadEx(fileTYPE *file, void *pBuffer, int nSize)
}
else
{
int ret = read(file->fd, pBuffer, nSize * 512);
int ret = fread(pBuffer, nSize, 512, file->filp);
if (ret < 0)
{
printf("FileRead error(%d).\n", ret);
@@ -208,7 +216,7 @@ int FileWrite(fileTYPE *file, void *pBuffer)
return 0;
}
int ret = write(file->fd, pBuffer, 512);
int ret = fwrite(pBuffer, 512, 1, file->filp);
if (ret < 0)
{
printf("FileWrite error(%d).\n", ret);
@@ -221,7 +229,7 @@ int FileWrite(fileTYPE *file, void *pBuffer)
// Read with offset advancing
int FileReadAdv(fileTYPE *file, void *pBuffer, int length)
{
ssize_t ret = read(file->fd, pBuffer, length);
ssize_t ret = fread(pBuffer, length, 1, file->filp);
if (ret < 0)
{
printf("FileReadAdv error(%d).\n", ret);
@@ -240,7 +248,7 @@ int FileReadSec(fileTYPE *file, void *pBuffer)
// Write with offset advancing
int FileWriteAdv(fileTYPE *file, void *pBuffer, int length)
{
int ret = write(file->fd, pBuffer, length);
int ret = fwrite(pBuffer, length, 1, file->filp);
if (ret < 0)
{
printf("FileWriteAdv error(%d).\n", ret);