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gambas-source-code/main/gbx/gbx_subr_file.c
gambas 1239f45687 Redesign internal file constants. 
[INTERPRETER]
* NEW: Redesign internal file constants.
* BUG: Opening a file for creation in direct mode now implies the write flag.
2020-11-09 17:38:28 +01:00

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/***************************************************************************
gbx_subr_file.c
(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
***************************************************************************/
#include "gb_common.h"
#include "gb_common_buffer.h"
#include "gbx_subr.h"
#include "gb_file.h"
#include "gb_list.h"
#include "gbx_stream.h"
#include "gbx_archive.h"
#include "gbx_api.h"
#include "gbx_local.h"
#include "gbx_regexp.h"
#include "gbx_string.h"
#include "gbx_c_file.h"
#include "gbx_math.h"
#include <sys/file.h>
typedef
struct _stream {
struct _stream *next;
CSTREAM *stream;
}
CSTREAM_NODE;
static void *_default_in = NULL;
static void *_default_out = NULL;
static void *_default_err = NULL;
static GB_ARRAY _result;
static char *_pattern;
static int _len_pattern;
static int _ignore;
static STREAM *_stream;
static void push_stream(void **list, CSTREAM *stream)
{
CSTREAM_NODE *slot;
ALLOC(&slot, sizeof(CSTREAM_NODE));
slot->stream = stream;
//OBJECT_REF(stream);
slot->next = *list;
*list = slot;
}
static CSTREAM *pop_stream(void **list)
{
CSTREAM *stream;
CSTREAM_NODE *slot;
if (!*list)
return NULL;
stream = ((CSTREAM_NODE *)*list)->stream;
slot = *list;
*list = slot->next;
FREE(&slot);
return stream;
}
static STREAM *get_default(intptr_t val)
{
STREAM *stream = NULL;
switch(val)
{
case 0:
if (_default_in)
stream = CSTREAM_TO_STREAM(((CSTREAM_NODE *)_default_in)->stream);
else if (CFILE_in)
stream = CSTREAM_TO_STREAM(CFILE_in);
break;
case 1:
if (_default_out)
stream = CSTREAM_TO_STREAM(((CSTREAM_NODE *)_default_out)->stream);
else if (CFILE_out)
stream = CSTREAM_TO_STREAM(CFILE_out);
break;
case 2:
if (_default_err)
stream = CSTREAM_TO_STREAM(((CSTREAM_NODE *)_default_err)->stream);
else if (CFILE_err)
stream = CSTREAM_TO_STREAM(CFILE_err);
break;
}
if (!stream)
THROW(E_CLOSED);
return stream;
}
static inline STREAM *_get_stream(VALUE *value, bool can_default)
{
STREAM *stream;
VARIANT_undo(value);
if ((can_default) && TYPE_is_integer(value->type) && value->_integer.value >= 0 && value->_integer.value <= 2)
stream = get_default((intptr_t)(value->_integer.value));
else
{
if (TYPE_is_object(value->type) && value->_object.object && OBJECT_class(value->_object.object)->is_stream)
stream = CSTREAM_TO_STREAM(value->_object.object);
else
{
if (VALUE_is_null(value))
THROW(E_NULL);
VALUE_conv_object(value, (TYPE)CLASS_Stream);
stream = NULL;
}
}
return stream;
}
/*#define _get_stream(_value, _can_default) \
STREAM *stream; \
\
VARIANT_undo(_value); \
\
if ((_can_default) && TYPE_is_integer((_value)->type) && (_value)->_integer.value >= 0 && (_value)->_integer.value <= 2) \
stream = get_default((intptr_t)(_value)->_integer.value); \
else \
{ \
if (TYPE_is_object((_value)->type) && (_value)->_object.object && OBJECT_class((_value)->_object.object)->is_stream) \
stream = CSTREAM_TO_STREAM((_value)->_object.object); \
else \
{ \
if (VALUE_is_null(_value)) \
THROW(E_NULL); \
\
VALUE_conv_object((_value), (TYPE)CLASS_Stream); \
stream = NULL; \
} \
}*/
#define get_stream(_value, _can_default) \
({ \
STREAM *_stream = _get_stream(_value, _can_default); \
\
if (STREAM_is_closed(_stream)) \
THROW(E_CLOSED); \
\
_stream; \
})
#define get_stream_for_writing(_value, _can_default) \
({ \
STREAM *_stream = _get_stream(_value, _can_default); \
\
if (STREAM_is_closed_for_writing(_stream)) \
THROW(E_CLOSED); \
\
_stream; \
})
static char *get_path(VALUE *param)
{
char *name;
int len;
SUBR_get_string_len(param, &name, &len);
return STRING_conv_file_name(name, len);
}
void SUBR_open(ushort code)
{
CFILE *file;
STREAM stream;
int mode;
void *addr;
SUBR_ENTER_PARAM(2);
SUBR_check_integer(&PARAM[1]);
mode = PARAM[1]._integer.value ^ GB_ST_BUFFERED;
if (code & 0x3F)
{
if (TYPE_is_pointer(PARAM->type))
addr = (void *)PARAM->_pointer.value;
else
THROW_TYPE(T_POINTER, PARAM->type);
STREAM_open(&stream, (char *)addr, mode | GB_ST_MEMORY);
}
else if (mode & GB_ST_STRING)
{
char *str;
STREAM_open(&stream, NULL, mode);
if (!VALUE_is_null(PARAM))
{
str = SUBR_get_string(PARAM);
if (mode & GB_ST_WRITE)
{
stream.string.buffer = STRING_new(str, STRING_length(str));
}
else
{
stream.string.buffer = str;
STRING_ref(str);
}
stream.string.size = STRING_length(str);
}
}
else
{
STREAM_open(&stream, get_path(PARAM), mode);
}
file = CFILE_create(&stream, mode);
OBJECT_put(RETURN, file);
SUBR_LEAVE();
}
void SUBR_close(void)
{
STREAM *stream;
SUBR_ENTER_PARAM(1);
stream = get_stream(PARAM, FALSE);
if (stream->type == &STREAM_string)
{
char *buffer = stream->string.buffer;
RETURN->type = T_STRING;
RETURN->_string.addr = buffer;
RETURN->_string.start = 0;
RETURN->_string.len = stream->string.size;
STRING_ref(buffer);
STREAM_close(stream);
STRING_free_later(buffer);
//fprintf(stderr, "buffer ref = %d\n", STRING_from_ptr(buffer)->ref);
SUBR_LEAVE();
}
else
{
STREAM_close(stream);
SUBR_LEAVE_VOID();
}
}
void SUBR_flush(void)
{
SUBR_ENTER_PARAM(1);
STREAM_flush(get_stream(PARAM, TRUE));
SUBR_LEAVE_VOID();
}
/*static void print_it(char *addr, long len)
{
STREAM_write(_stream, addr, len);
}*/
void SUBR_print(ushort code)
{
int i;
char *addr;
int len;
SUBR_ENTER();
if (NPARAM < 1)
THROW(E_NEPARAM);
_stream = get_stream_for_writing(PARAM, TRUE);
//PRINT_init(print_it, FALSE);
for (i = 1; i < NPARAM; i++)
{
PARAM++;
//PRINT_value(PARAM);
VALUE_to_string(PARAM, &addr, &len);
if (len == 1 && *addr == '\n')
STREAM_write_eol(_stream);
else
STREAM_write(_stream, addr, len);
}
SUBR_LEAVE_VOID();
}
void SUBR_linput(void)
{
STREAM *stream;
char *addr;
stream = get_stream(&SP[-1], TRUE);
addr = STREAM_line_input(stream, NULL);
SP--;
if (!TYPE_is_integer(SP->type))
RELEASE_OBJECT(SP);
SP->type = T_STRING;
SP->_string.addr = addr;
SP->_string.start = 0;
SP->_string.len = STRING_length(addr);
SP++;
}
void SUBR_input(ushort code)
{
static STREAM *stream = NULL;
char *addr;
SUBR_ENTER();
if (NPARAM == 1)
stream = get_stream(PARAM, TRUE);
if (stream)
addr = STREAM_input(stream);
else
addr = NULL;
if (NPARAM == 1)
{
SP--;
if (!TYPE_is_integer(SP->type))
RELEASE_OBJECT(SP);
}
if (addr)
{
//VALUE_from_string(SP, addr, STRING_length(addr));
SP->type = T_STRING;
SP->_string.addr = addr;
SP->_string.start = 0;
SP->_string.len = STRING_length(addr);
}
else
STRING_void_value(SP);
SP++;
}
void SUBR_eof(ushort code)
{
STREAM *stream;
bool eof;
SUBR_ENTER();
if (NPARAM == 1)
{
stream = get_stream(PARAM, FALSE);
eof = STREAM_eof(stream);
RELEASE_OBJECT(PARAM);
SP--;
}
else
{
stream = get_default(0);
eof = STREAM_eof(stream);
}
SP->type = T_BOOLEAN;
SP->_boolean.value = (-eof);
SP++;
}
void SUBR_lof(ushort code)
{
STREAM *stream;
SUBR_ENTER();
if (NPARAM == 1)
stream = get_stream(PARAM, FALSE);
else
stream = get_default(0);
RETURN->type = T_LONG;
STREAM_lof(stream, &(RETURN->_long.value));
SUBR_LEAVE();
}
void SUBR_seek(ushort code)
{
STREAM *stream;
int64_t pos;
int64_t len;
int whence = SEEK_SET;
SUBR_ENTER();
stream = get_stream(PARAM, FALSE);
if (NPARAM >= 2)
{
VALUE_conv(&PARAM[1], T_LONG);
pos = PARAM[1]._long.value;
if (NPARAM == 3)
{
VALUE_conv_integer(&PARAM[2]);
whence = PARAM[2]._integer.value;
if (whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END)
THROW(E_ARG);
}
else
{
if (pos < 0)
{
STREAM_lof(stream, &len);
pos += len;
}
}
STREAM_seek(stream, pos, (int)whence);
RETURN->type = T_VOID;
}
else
{
RETURN->type = T_LONG;
RETURN->_long.value = STREAM_tell(stream);
}
SUBR_LEAVE();
}
void SUBR_read(ushort code)
{
STREAM *stream;
char *data;
int len = 0;
int eff;
SUBR_ENTER_PARAM(2);
stream = get_stream(PARAM, TRUE);
if (code & 0x3F)
{
VALUE_conv_integer(&PARAM[1]);
len = PARAM[1]._integer.value;
if (len == 0)
{
STRING_void_value(RETURN);
}
else if (len > 0)
{
data = STRING_new_temp(NULL, len);
if ((code & 0x3F) == 2)
STREAM_peek(stream, data, len);
else
STREAM_read(stream, data, len);
RETURN->type = T_STRING;
RETURN->_string.addr = data;
RETURN->_string.start = 0;
RETURN->_string.len = len;
}
else
{
len = (-len);
data = STRING_new(NULL, len);
eff = STREAM_read_max(stream, data, len);
if (eff == 0)
{
STRING_void_value(RETURN);
STRING_free(&data);
}
else
{
if (eff < len)
{
data = STRING_extend(data, eff);
len = eff;
}
STRING_extend_end(data);
RETURN->type = T_STRING;
RETURN->_string.addr = data;
RETURN->_string.start = 0;
RETURN->_string.len = len;
}
}
}
else
{
TYPE type = SUBR_get_type(&PARAM[1]);
STREAM_read_type(stream, type, RETURN);
}
SUBR_LEAVE();
}
void SUBR_write(ushort code)
{
STREAM *stream;
SUBR_ENTER_PARAM(3);
stream = get_stream_for_writing(PARAM, TRUE);
if (code & 0x3F)
{
char *str;
int len;
int lenw;
VALUE_conv_integer(&PARAM[2]);
lenw = PARAM[2]._integer.value;
if (TYPE_is_pointer(PARAM[1].type))
{
if (lenw < 0)
lenw = 0;
len = lenw;
str = (char *)PARAM[1]._pointer.value;
}
else
{
SUBR_get_string_len(&PARAM[1], &str, &len);
if (lenw < 0)
lenw = len;
}
if (lenw > 0)
{
STREAM_write(stream, str, Min(len, lenw));
if (lenw > len)
STREAM_write_zeros(stream, lenw - len);
}
}
else
{
TYPE type;
type = SUBR_get_type(&PARAM[2]);
VALUE_conv(&PARAM[1], type);
STREAM_write_type(stream, type, &PARAM[1]);
}
SUBR_LEAVE_VOID();
}
void SUBR_stat(ushort code)
{
const char *path;
CSTAT *cstat;
FILE_STAT info;
bool follow = FALSE;
SUBR_ENTER();
path = get_path(PARAM);
if (NPARAM == 2)
follow = SUBR_get_boolean(&PARAM[1]);
FILE_stat(path, &info, follow);
cstat = OBJECT_new(CLASS_Stat, NULL, NULL);
OBJECT_UNREF_KEEP(cstat);
cstat->info = info;
cstat->path = STRING_new_zero(path);
RETURN->_object.class = CLASS_Stat;
RETURN->_object.object = cstat;
SUBR_LEAVE();
}
void SUBR_exist(ushort code)
{
bool exist;
const char *path;
bool follow = FALSE;
SUBR_ENTER();
if (!NPARAM)
{
NPARAM++;
PARAM--;
}
path = get_path(PARAM);
if (NPARAM == 2)
follow = SUBR_get_boolean(&PARAM[1]);
exist = FILE_exist_follow(path, follow);
RETURN->type = T_BOOLEAN;
RETURN->_integer.value = exist ? -1 : 0;
SUBR_LEAVE();
}
void SUBR_dir(ushort code)
{
GB_ARRAY array;
const char *path;
char *pattern;
int len_pattern;
char *str;
int attr = 0;
SUBR_ENTER();
path = get_path(PARAM);
if (NPARAM >= 2)
{
pattern = SUBR_get_string(&PARAM[1]);
if (NPARAM == 3)
attr = SUBR_get_integer(&PARAM[2]);
}
else
pattern = NULL;
FILE_dir_first(path, pattern, attr);
GB_ArrayNew(&array, T_STRING, 0);
while (!FILE_dir_next(&pattern, &len_pattern))
{
if (!LOCAL_is_UTF8)
{
if (STRING_conv(&str, pattern, len_pattern, LOCAL_encoding, SC_UTF8, FALSE))
str = STRING_new(pattern, len_pattern);
else
STRING_ref(str);
}
else
str = STRING_new(pattern, len_pattern);
*((char **)GB_ArrayAdd(array)) = str;
}
RETURN->_object.class = OBJECT_class(array);
RETURN->_object.object = array;
SUBR_LEAVE();
}
static void found_file(const char *path)
{
char *str;
int len;
path += _ignore;
len = strlen(path);
if (_pattern && !REGEXP_match(_pattern, _len_pattern, path, len))
return;
if (!LOCAL_is_UTF8)
{
if (STRING_conv(&str, path, len, LOCAL_encoding, SC_UTF8, FALSE))
str = STRING_new(path, len);
else
STRING_ref(str);
}
else
str = STRING_new(path, len);
*((char **)GB_ArrayAdd(_result)) = str;
}
void SUBR_rdir(ushort code)
{
const char *path;
int attr = 0;
bool follow = FALSE;
SUBR_ENTER();
path = get_path(PARAM);
if (NPARAM >= 2)
{
SUBR_get_string_len(&PARAM[1], &_pattern, &_len_pattern);
if (NPARAM >= 3)
{
attr = SUBR_get_integer(&PARAM[2]);
if (NPARAM == 4)
follow = SUBR_get_boolean(&PARAM[3]);
}
}
else
_pattern = NULL;
GB_ArrayNew(&_result, T_STRING, 0);
if (!path || *path == 0)
path = ".";
_ignore = strlen(path);
if (_ignore > 0 && path[_ignore - 1] != '/')
_ignore++;
FILE_recursive_dir(path, found_file, NULL, attr, follow);
RETURN->_object.class = OBJECT_class(_result);
RETURN->_object.object = _result;
SUBR_LEAVE();
}
void SUBR_kill(ushort code)
{
SUBR_ENTER_PARAM(1);
switch(code & 0xFF)
{
case 0:
FILE_unlink(get_path(PARAM));
break;
case 1:
FILE_mkdir(get_path(PARAM));
break;
case 2:
FILE_rmdir(get_path(PARAM));
break;
default:
THROW_ILLEGAL();
}
SUBR_LEAVE_VOID();
}
void SUBR_mkdir(ushort code)
{
SUBR_ENTER_PARAM(1);
switch (code & 0xFF)
{
case 0: // Deprecated Mkdir
SUBR_kill(1);
return;
case 1: // Even
VALUE_conv(PARAM, T_LONG);
PARAM->type = GB_T_BOOLEAN;
PARAM->_boolean.value = (PARAM->_long.value & 1) == 0 ? -1 : 0;
break;
case 2: // Odd
VALUE_conv(PARAM, T_LONG);
PARAM->type = GB_T_BOOLEAN;
PARAM->_boolean.value = (PARAM->_long.value & 1) != 0 ? -1 : 0;
break;
default:
THROW_ILLEGAL();
}
}
void SUBR_rmdir(ushort code)
{
SUBR_ENTER();
int min, max;
switch (code & 0x3F)
{
case 0: // Deprecated RmDir
SUBR_kill(2);
return;
default: // Rand
if (NPARAM == 1)
{
VALUE_conv_integer(PARAM);
min = 0;
max = PARAM->_integer.value;
}
else
{
VALUE_conv_integer(PARAM);
VALUE_conv_integer(&PARAM[1]);
min = PARAM->_integer.value;
max = PARAM[1]._integer.value;
if (max < min)
{
int temp = max;
max = min;
min = temp;
}
}
RETURN->type = T_INTEGER;
RETURN->_integer.value = min + (int)(rnd() * (max + 1 - min));
break;
}
SUBR_LEAVE();
}
void SUBR_move(ushort code)
{
char *path;
char *auth;
FILE_STAT info;
SUBR_ENTER_PARAM(2);
path = get_path(&PARAM[0]);
switch (code & 0xFF)
{
case 0: // Move
FILE_rename(path, get_path(&PARAM[1]));
break;
case 1: // Copy
FILE_copy(path, get_path(&PARAM[1]));
break;
case 2: // Link
/* Parameters are NOT inverted ANYMORE! */
FILE_link(path, get_path(&PARAM[1]));
break;
case 3: // Chmod
auth = SUBR_get_string(&PARAM[1]);
FILE_stat(path, &info, TRUE);
FILE_chmod(path, FILE_mode_from_string(info.mode, auth));
break;
case 4: // Chown
auth = SUBR_get_string(&PARAM[1]);
FILE_chown(path, auth);
break;
case 5: // Chgrp
auth = SUBR_get_string(&PARAM[1]);
FILE_chgrp(path, auth);
break;
case 6: // Move DownTo
FILE_rename_unlink(path, get_path(&PARAM[1]));
break;
default:
THROW_ILLEGAL();
}
SUBR_LEAVE_VOID();
}
void SUBR_link(ushort code)
{
SUBR_ENTER_PARAM(1);
switch (code & 0xFF)
{
case 0: // Deprecated Link
SUBR_move(2);
return;
case 1: // IsNan
VALUE_conv(PARAM, T_FLOAT);
PARAM->type = GB_T_BOOLEAN;
PARAM->_boolean.value = isnan(PARAM->_float.value) ? -1 : 0;
break;
case 2: // IsInf
VALUE_conv(PARAM, T_FLOAT);
PARAM->type = GB_T_INTEGER;
PARAM->_integer.value = isinf(PARAM->_float.value);
break;
default:
THROW_ILLEGAL();
}
}
void SUBR_temp(ushort code)
{
char *temp;
int len;
SUBR_ENTER();
if (NPARAM == 0)
temp = FILE_make_temp(&len, NULL);
else
temp = FILE_make_temp(&len, SUBR_get_string(PARAM));
STRING_new_temp_value(RETURN, temp, len);
SUBR_LEAVE();
}
void SUBR_isdir(void)
{
bool isdir;
const char *path;
SUBR_ENTER_PARAM(1);
path = get_path(PARAM);
isdir = FILE_is_dir(path);
RETURN->type = T_BOOLEAN;
RETURN->_integer.value = isdir ? -1 : 0;
SUBR_LEAVE();
}
void SUBR_access(ushort code)
{
int access;
SUBR_ENTER();
if (NPARAM == 1)
access = GB_ST_READ;
else
{
VALUE_conv_integer(&PARAM[1]);
access = PARAM[1]._integer.value;
}
RETURN->type = T_BOOLEAN;
RETURN->_integer.value = FILE_access(get_path(PARAM), access) ? -1 : 0;
SUBR_LEAVE();
}
void SUBR_lock(ushort code)
{
code &= 0x1F;
if (code == 1)
{
SUBR_ENTER_PARAM(1);
STREAM_close(get_stream(PARAM, FALSE));
SUBR_LEAVE_VOID();
}
else
{
SUBR_ENTER_PARAM((code == 2) ? 2 : 1);
STREAM stream;
CFILE *file;
const char *path = get_path(PARAM);
double wait, timer;
if (FILE_is_relative(path))
THROW(E_BADPATH);
if (code == 2)
{
DATE_timer(&wait, FALSE);
wait += SUBR_get_float(&PARAM[1]);
}
for(;;)
{
STREAM_open(&stream, path, GB_ST_LOCK);
if (!STREAM_lock_all(&stream) && FILE_exist(path))
break;
STREAM_close(&stream);
if (code == 2)
{
DATE_timer(&timer, FALSE);
if (timer < wait)
{
usleep(10000);
continue;
}
}
THROW(E_LOCK);
}
file = CFILE_create(&stream, GB_ST_LOCK);
OBJECT_put(RETURN, file);
SUBR_LEAVE();
}
}
void SUBR_inp_out(ushort code)
{
CSTREAM *stream;
void **where;
SUBR_ENTER_PARAM(1);
switch(code & 0x1F)
{
case 0: where = &_default_in; break;
case 1: where = &_default_out; break;
default: where = &_default_err; break;
}
if (VALUE_is_null(PARAM))
{
stream = pop_stream(where);
if (stream)
OBJECT_UNREF(stream);
return;
}
VALUE_conv_object(PARAM, (TYPE)CLASS_Stream);
stream = PARAM->_object.object;
OBJECT_REF(stream);
push_stream(where, stream);
SUBR_LEAVE_VOID();
}
static void free_list(void **list)
{
CSTREAM *stream;
for(;;)
{
stream = pop_stream(list);
if (!stream)
return;
OBJECT_UNREF(stream);
}
}
void SUBR_exit_inp_out(void)
{
free_list((void **)&_default_in);
free_list((void **)&_default_out);
free_list((void **)&_default_err);
}
void SUBR_dfree(void)
{
SUBR_ENTER_PARAM(1);
RETURN->type = T_LONG;
RETURN->_long.value = FILE_free(get_path(PARAM));
SUBR_LEAVE();
}
void SUBR_debug(ushort code)
{
SUBR_ENTER();
if (NPARAM == 0)
{
STREAM *stream = get_default(2);
const char *s = DEBUG_get_current_position();
STREAM_write(stream, (void *)s, strlen(s));
STREAM_write(stream, ": ", 2);
RETURN->type = T_INTEGER;
RETURN->_integer.value = 2;
}
else if (NPARAM == 1)
{
VALUE_conv_boolean(PARAM);
if (PARAM->_boolean.value == 0)
THROW(E_ASSERT);
}
SUBR_LEAVE();
}
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