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legacy stdc++: Delete all unused protected streambuf APIs that use IO_FILE directly.

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Unfortunately there are some marked "public" that also use it,
so we can't just move the remainder to an internal file and then
drop libio.h from public consumption.

Delete all the unused portions of the public libio.h while at it.
This commit is contained in:
Augustin Cavalier
2025-03-13 18:22:33 -04:00
parent aa3a5e7698
commit 194f7cff83
3 changed files with 12 additions and 119 deletions
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headers/cpp/streambuf.h
-30
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@@ -288,7 +288,6 @@ struct streambuf : public _IO_FILE { // protected??
const void *&_vtable() { return *(const void**)((_IO_FILE*)this + 1); }
protected:
static streambuf* _list_all; /* List of open streambufs. */
_IO_FILE*& xchain() { return _chain; }
void _un_link();
void _link_in();
char* gptr() const
@@ -302,13 +301,8 @@ struct streambuf : public _IO_FILE { // protected??
{ return _IO_file_flags & _IO_IN_BACKUP ? _IO_save_base : _IO_read_base;}
char* base() const { return _IO_buf_base; }
char* ebuf() const { return _IO_buf_end; }
int blen() const { return _IO_buf_end - _IO_buf_base; }
void xput_char(char c) { *_IO_write_ptr++ = c; }
int xflags() { return _IO_file_flags; }
int xflags(int f) {int fl = _IO_file_flags; _IO_file_flags = f; return fl;}
void xsetflags(int f) { _IO_file_flags |= f; }
void xsetflags(int f, int mask)
{ _IO_file_flags = (_IO_file_flags & ~mask) | (f & mask); }
void gbump(int n)
{ _IO_file_flags & _IO_IN_BACKUP ? (_IO_save_base+=n):(_IO_read_ptr+=n);}
void pbump(int n) { _IO_write_ptr += n; }
@@ -318,26 +312,6 @@ struct streambuf : public _IO_FILE { // protected??
void setg(char* eb, char* g, char *eg) {
if (_IO_file_flags & _IO_IN_BACKUP) _IO_free_backup_area(this);
_IO_read_base = eb; _IO_read_ptr = g; _IO_read_end = eg; }
char *shortbuf() { return _shortbuf; }
int in_backup() { return _flags & _IO_IN_BACKUP; }
// The start of the main get area: FIXME: wrong for write-mode filebuf?
char *Gbase() { return in_backup() ? _IO_save_base : _IO_read_base; }
// The end of the main get area:
char *eGptr() { return in_backup() ? _IO_save_end : _IO_read_end; }
// The start of the backup area:
char *Bbase() { return in_backup() ? _IO_read_base : _IO_save_base; }
char *Bptr() { return _IO_backup_base; }
// The end of the backup area:
char *eBptr() { return in_backup() ? _IO_read_end : _IO_save_end; }
char *Nbase() { return _IO_save_base; }
char *eNptr() { return _IO_save_end; }
int have_backup() { return _IO_save_base != NULL; }
int have_markers() { return _markers != NULL; }
void free_backup_area();
void unsave_markers(); // Make all streammarkers !saving().
int put_mode() { return _flags & _IO_CURRENTLY_PUTTING; }
int switch_to_get_mode();
streambuf(int flags=0);
public:
@@ -446,10 +420,6 @@ class filebuf : public streambuf {
virtual int sync();
protected: // See documentation in filebuf.C.
// virtual int pbackfail(int c);
int is_reading() { return eback() != egptr(); }
char* cur_ptr() { return is_reading() ? gptr() : pptr(); }
/* System's idea of pointer */
char* file_ptr() { return eGptr(); }
// Low-level operations (Usually invoke system calls.)
virtual streamsize sys_read(char* buf, streamsize size);
virtual streampos sys_seek(streamoff, _seek_dir);