/*-------------------------------------------------------------------------*
* PL_SET_STREAM_LINE_COLUMN_3 *
* *
*-------------------------------------------------------------------------*/
Bool
Pl_Set_Stream_Line_Column_3(WamWord sora_word, WamWord line_word,
WamWord col_word)
{
int stm;
StmInf *pstm;
PlLong line_count, line_pos;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
if (!pstm->prop.reposition)
Pl_Err_Permission(pl_permission_operation_reposition,
pl_permission_type_stream, sora_word);
if (!pstm->prop.text)
Pl_Err_Permission(pl_permission_operation_reposition,
pl_permission_type_binary_stream, sora_word);
line_count = Pl_Rd_Integer_Check(line_word) - 1;
line_pos = Pl_Rd_Integer_Check(col_word) - 1;
return line_count >= 0 && line_pos >= 0 &&
Pl_Stream_Set_Position_LC(pstm, line_count, line_pos) == 0;
}
/*-------------------------------------------------------------------------*
* PL_SET_STREAM_TYPE_2 *
* *
*-------------------------------------------------------------------------*/
void
Pl_Set_Stream_Type_2(WamWord sora_word, WamWord is_text_word)
{
int stm;
StmInf *pstm;
int text;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
text = Pl_Rd_Integer_Check(is_text_word);
if ((unsigned) text == pstm->prop.text)
return;
if (pstm->char_count)
Pl_Err_Permission(pl_permission_operation_modify,
pl_permission_type_stream, sora_word);
pstm->prop.text = text;
#if defined(_WIN32) || defined(__CYGWIN__)
{
FILE *f;
f = Pl_Stdio_Desc_Of_Stream(stm);
if (f == NULL)
return;
setmode(fileno(f), (text) ? O_TEXT : O_BINARY);
}
#endif
}
/*-------------------------------------------------------------------------*
* PL_CLOSE_INPUT_TERM_STREAM_1 *
* *
*-------------------------------------------------------------------------*/
void
Pl_Close_Input_Term_Stream_1(WamWord sora_word)
{
int stm;
StmInf *pstm;
StrSInf *str_stream;
int type;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
type = pstm->prop.other;
if (type < 1 || type > 3)
Pl_Err_Domain(pl_domain_term_stream_or_alias, sora_word);
if (pstm->prop.output)
Pl_Err_Permission(pl_permission_operation_close,
pl_permission_type_stream, sora_word);
if (type != TERM_STREAM_ATOM)
{
str_stream = (StrSInf *) (pstm->file);
Free(str_stream->buff);
}
Pl_Delete_Str_Stream(stm);
}
/*-------------------------------------------------------------------------*
* PL_SEEK_4 *
* *
*-------------------------------------------------------------------------*/
Bool
Pl_Seek_4(WamWord sora_word, WamWord whence_word, WamWord offset_word,
WamWord new_loc_word)
{
int stm;
StmInf *pstm;
int whence;
PlLong offset;
int atom;
PlLong p[4];
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
if (!pstm->prop.reposition)
Pl_Err_Permission(pl_permission_operation_reposition,
pl_permission_type_stream, sora_word);
if (pstm->prop.text)
Pl_Err_Permission(pl_permission_operation_reposition,
pl_permission_type_text_stream, sora_word);
atom = Pl_Rd_Atom_Check(whence_word);
if (atom == pl_atom_bof)
whence = SEEK_SET;
else if (atom == pl_atom_current)
whence = SEEK_CUR;
else if (atom == pl_atom_eof)
whence = SEEK_END;
else
Pl_Err_Domain(pl_domain_stream_seek_method, whence_word);
offset = Pl_Rd_Integer_Check(offset_word);
Pl_Check_For_Un_Integer(new_loc_word);
if (Pl_Stream_Set_Position(pstm, whence, offset, offset, 0, 0) != 0)
return FALSE;
Pl_Stream_Get_Position(pstm, &offset, p + 1, p + 2, p + 3);
return Pl_Get_Integer(offset, new_loc_word);
}
/*-------------------------------------------------------------------------*
* PL_SET_STREAM_EOF_ACTION_2 *
* *
*-------------------------------------------------------------------------*/
void
Pl_Set_Stream_Eof_Action_2(WamWord sora_word, WamWord action_word)
{
int stm;
StmInf *pstm;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
if (pstm->prop.output)
Pl_Err_Permission(pl_permission_operation_modify,
pl_permission_type_stream, sora_word);
pstm->prop.eof_action = Pl_Rd_Integer_Check(action_word);
}
/*-------------------------------------------------------------------------*
* PL_LINE_POSITION_2 *
* *
*-------------------------------------------------------------------------*/
Bool
Pl_Line_Position_2(WamWord sora_word, WamWord count_word)
{
int stm;
StmInf *pstm;
PlLong offset, char_count, line_count, line_pos;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
if (!pstm->prop.text)
Pl_Err_Permission(pl_permission_operation_access,
pl_permission_type_binary_stream, sora_word);
Pl_Stream_Get_Position(pstm, &offset, &char_count, &line_count, &line_pos);
return Pl_Un_Integer_Check(line_pos, count_word);
}
/*-------------------------------------------------------------------------*
* PL_CLOSE_OUTPUT_TERM_STREAM_2 *
* *
*-------------------------------------------------------------------------*/
Bool
Pl_Close_Output_Term_Stream_2(WamWord sora_word, WamWord sink_term_word)
{
int stm;
StmInf *pstm;
int type;
char *str;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
type = pstm->prop.other;
if (type < 1 || type > 3)
Pl_Err_Domain(pl_domain_term_stream_or_alias, sora_word);
if (pstm->prop.input)
Pl_Err_Permission(pl_permission_operation_close,
pl_permission_type_stream, sora_word);
str = Pl_Term_Write_Str_Stream(stm);
switch (SYS_VAR_OPTION_MASK)
{
case TERM_STREAM_ATOM:
if (!Pl_Un_String_Check(str, sink_term_word))
return FALSE;
break;
case TERM_STREAM_CHARS:
if (!Pl_Un_Chars_Check(str, sink_term_word))
return FALSE;
break;
case TERM_STREAM_CODES:
if (!Pl_Un_Codes_Check(str, sink_term_word))
return FALSE;
break;
}
Pl_Delete_Str_Stream(stm);
return TRUE;
}
/*-------------------------------------------------------------------------*
* PL_SET_STREAM_POSITION_2 *
* *
*-------------------------------------------------------------------------*/
Bool
Pl_Set_Stream_Position_2(WamWord sora_word, WamWord position_word)
{
WamWord word, tag_mask;
WamWord p_word[4];
int p[4];
int i;
int stm;
StmInf *pstm;
stm = Pl_Get_Stream_Or_Alias(sora_word, STREAM_CHECK_EXIST);
pstm = pl_stm_tbl[stm];
if (!pstm->prop.reposition)
Pl_Err_Permission(pl_permission_operation_reposition,
pl_permission_type_stream, sora_word);
DEREF(position_word, word, tag_mask);
if (tag_mask == TAG_REF_MASK)
Pl_Err_Instantiation();
if (!Pl_Get_Structure(pl_atom_stream_position, 4, position_word))
dom_error:
Pl_Err_Domain(pl_domain_stream_position, position_word);
for (i = 0; i < 4; i++)
{
p_word[i] = Pl_Unify_Variable();
DEREF(p_word[i], word, tag_mask);
if (tag_mask == TAG_REF_MASK)
Pl_Err_Instantiation();
if (tag_mask != TAG_INT_MASK)
goto dom_error;
p[i] = UnTag_INT(word);
}
return Pl_Stream_Set_Position(pstm, SEEK_SET, p[0], p[1], p[2], p[3]) == 0;
}
/*-------------------------------------------------------------------------*
* PL_SR_OPEN_FILE_2 *
* *
*-------------------------------------------------------------------------*/
void
Pl_SR_Open_File_2(WamWord file_name_word, WamWord from_stream_word)
{
SRInf *sr = cur_sr;
int atom_file_name;
int stm;
SRFile *file;
Bool from_stream = Pl_Rd_Boolean(from_stream_word);
Bool master_file = (sr->file_top == NULL);
StmInf *pstm, *pstm_tmp;
if (sr->next_to_reread == NULL)
{
if (from_stream)
{
stm = Pl_Get_Stream_Or_Alias(file_name_word, STREAM_CHECK_INPUT);
Pl_Check_Stream_Type(stm, TRUE, TRUE);
atom_file_name = pl_stm_tbl[stm]->atom_file_name;
}
else
{
atom_file_name = Pl_Rd_Atom(file_name_word);
if (strcmp(pl_atom_tbl[atom_file_name].name, "user") == 0)
#if 0
stm = pl_stm_input;
#else
{
stm = Pl_Add_Stream(0, (long) 0, pl_stm_tbl[pl_stm_input]->prop,
NULL, NULL, NULL, NULL, NULL, NULL, NULL);
*pl_stm_tbl[stm] = *pl_stm_tbl[pl_stm_input];
}
#endif
else
{
stm = Pl_Add_Stream_For_Stdio_File(pl_atom_tbl[atom_file_name].name,
STREAM_MODE_READ, TRUE);
if (stm < 0)
{
if (errno == ENOENT || errno == ENOTDIR)
Pl_Err_Existence(pl_existence_source_sink,
file_name_word);
else
Pl_Err_Permission(pl_permission_operation_open,
pl_permission_type_source_sink,
file_name_word);
}
}
}
pstm = pl_stm_tbl[stm];
file = (SRFile *) Malloc(sizeof(SRFile));
file->atom_file_name = atom_file_name;
file->stm = stm;
file->reposition = pstm->prop.reposition;
if (!file->reposition)
{
file->tmp_path = Pl_M_Tempnam(NULL, NULL);
file->tmp_stm = Pl_Add_Stream_For_Stdio_File(file->tmp_path,
STREAM_MODE_WRITE, TRUE);
if (file->tmp_stm < 0)
Pl_Fatal_Error("cannot create tmp file %s in %s:%d", file->tmp_path,
__FILE__, __LINE__);
/* try to be similar to original file */
pstm_tmp = pl_stm_tbl[file->tmp_stm];
pstm_tmp->atom_file_name = atom_file_name;
pstm_tmp->prop.eof_action = pstm->prop.eof_action;
if (pstm_tmp->prop.buffering != pstm->prop.buffering)
{
pstm_tmp->prop.buffering = pstm->prop.buffering;
Pl_Stdio_Set_Buffering((FILE *) pstm_tmp->file,
pstm_tmp->prop.buffering);
}
Pl_Add_Mirror_To_Stream(stm, file->tmp_stm);
}
else
{
file->tmp_path = NULL;
file->tmp_stm = -1;
}
file->next = NULL;
if (sr->file_first == NULL)
sr->file_first = file;
else
sr->file_last->next = file;
sr->file_last = file;
}
/*-------------------------------------------------------------------------*
* PL_OPEN_3 *
* *
*-------------------------------------------------------------------------*/
void
Pl_Open_3(WamWord source_sink_word, WamWord mode_word, WamWord stm_word)
{
WamWord word, tag_mask;
int atom;
int mode;
Bool text;
StmProp prop;
char *path;
int atom_file_name;
int stm;
FILE *f;
int mask = SYS_VAR_OPTION_MASK;
Bool reposition;
DEREF(source_sink_word, word, tag_mask);
if (tag_mask == TAG_REF_MASK)
Pl_Err_Instantiation();
if (tag_mask != TAG_ATM_MASK)
Pl_Err_Domain(pl_domain_source_sink, source_sink_word);
atom_file_name = UnTag_ATM(word);
path = pl_atom_tbl[atom_file_name].name;
if ((path = Pl_M_Absolute_Path_Name(path)) == NULL)
Pl_Err_Existence(pl_existence_source_sink, source_sink_word);
text = mask & 1;
mask >>= 1;
atom = Pl_Rd_Atom_Check(mode_word);
if (atom == pl_atom_read)
mode = STREAM_MODE_READ;
else if (atom == pl_atom_write)
mode = STREAM_MODE_WRITE;
else if (atom == pl_atom_append)
mode = STREAM_MODE_APPEND;
else
Pl_Err_Domain(pl_domain_io_mode, mode_word);
stm = Pl_Add_Stream_For_Stdio_File(path, mode, text);
if (stm < 0)
{
if (errno == ENOENT || errno == ENOTDIR)
Pl_Err_Existence(pl_existence_source_sink, source_sink_word);
else
Pl_Err_Permission(pl_permission_operation_open,
pl_permission_type_source_sink, source_sink_word);
}
prop = pl_stm_tbl[stm]->prop;
f = (FILE *) pl_stm_tbl[stm]->file;
/* change properties wrt to specified ones */
if ((mask & 2) != 0) /* reposition specified */
{
reposition = mask & 1;
if (reposition && !prop.reposition)
{
fclose(f);
word = Pl_Put_Structure(pl_atom_reposition, 1);
Pl_Unify_Atom(pl_atom_true);
Pl_Err_Permission(pl_permission_operation_open,
pl_permission_type_source_sink, word);
}
prop.reposition = reposition;
}
mask >>= 2;
if ((mask & 4) != 0) /* eof_action specified */
prop.eof_action = mask & 3;
mask >>= 3;
if ((mask & 4) != 0) /* buffering specified */
if (prop.buffering != (unsigned) (mask & 3)) /* cast for MSVC warning */
{
prop.buffering = mask & 3;
Pl_Stdio_Set_Buffering(f, prop.buffering);
}
mask >>= 3;
pl_stm_tbl[stm]->atom_file_name = atom_file_name;
pl_stm_tbl[stm]->prop = prop;
Pl_Get_Integer(stm, stm_word);
}
