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qse/ase/awk/extio.c

959 lines
21 KiB
C
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/*
* $Id: extio.c,v 1.8 2007/10/28 06:12:37 bacon Exp $
*
* {License}
*/
#include <ase/awk/awk_i.h>
enum
{
MASK_READ = 0x0100,
MASK_WRITE = 0x0200,
MASK_RDWR = 0x0400,
MASK_CLEAR = 0x00FF
};
static int in_type_map[] =
{
/* the order should match the order of the
* ASE_AWK_IN_XXX values in tree.h */
ASE_AWK_EXTIO_PIPE,
ASE_AWK_EXTIO_COPROC,
ASE_AWK_EXTIO_FILE,
ASE_AWK_EXTIO_CONSOLE
};
static int in_mode_map[] =
{
/* the order should match the order of the
* ASE_AWK_IN_XXX values in tree.h */
ASE_AWK_EXTIO_PIPE_READ,
0,
ASE_AWK_EXTIO_FILE_READ,
ASE_AWK_EXTIO_CONSOLE_READ
};
static int in_mask_map[] =
{
MASK_READ,
MASK_RDWR,
MASK_READ,
MASK_READ
};
static int out_type_map[] =
{
/* the order should match the order of the
* ASE_AWK_OUT_XXX values in tree.h */
ASE_AWK_EXTIO_PIPE,
ASE_AWK_EXTIO_COPROC,
ASE_AWK_EXTIO_FILE,
ASE_AWK_EXTIO_FILE,
ASE_AWK_EXTIO_CONSOLE
};
static int out_mode_map[] =
{
/* the order should match the order of the
* ASE_AWK_OUT_XXX values in tree.h */
ASE_AWK_EXTIO_PIPE_WRITE,
0,
ASE_AWK_EXTIO_FILE_WRITE,
ASE_AWK_EXTIO_FILE_APPEND,
ASE_AWK_EXTIO_CONSOLE_WRITE
};
static int out_mask_map[] =
{
MASK_WRITE,
MASK_RDWR,
MASK_WRITE,
MASK_WRITE,
MASK_WRITE
};
int ase_awk_readextio (
ase_awk_run_t* run, int in_type,
const ase_char_t* name, ase_str_t* buf)
{
ase_awk_extio_t* p = run->extio.chain;
ase_awk_io_t handler;
int extio_type, extio_mode, extio_mask, n, ret;
ase_awk_val_t* rs;
ase_char_t* rs_ptr;
ase_size_t rs_len;
ase_size_t line_len = 0;
ase_char_t c = ASE_T('\0'), pc;
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_type_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mode_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mask_map));
/* translate the in_type into the relevant extio type and mode */
extio_type = in_type_map[in_type];
extio_mode = in_mode_map[in_type];
extio_mask = in_mask_map[in_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name,name) == 0) break;
p = p->next;
}
if (p == ASE_NULL)
{
p = (ase_awk_extio_t*) ASE_AWK_MALLOC (
run->awk, ASE_SIZEOF(ase_awk_extio_t));
if (p == ASE_NULL)
{
ase_awk_setrunerror (
run, ASE_AWK_ENOMEM, 0, ASE_NULL, 0);
return -1;
}
p->name = ase_strdup (name, &run->awk->prmfns.mmgr);
if (p->name == ASE_NULL)
{
ASE_AWK_FREE (run->awk, p);
ase_awk_setrunerror (
run, ASE_AWK_ENOMEM, 0, ASE_NULL, 0);
return -1;
}
p->run = run;
p->type = (extio_type | extio_mask);
p->mode = extio_mode;
p->handle = ASE_NULL;
p->next = ASE_NULL;
p->custom_data = run->extio.custom_data;
p->in.buf[0] = ASE_T('\0');
p->in.pos = 0;
p->in.len = 0;
p->in.eof = ase_false;
p->in.eos = ase_false;
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_OPEN, p, ASE_NULL, 0);
if (n <= -1)
{
ASE_AWK_FREE (run->awk, p->name);
ASE_AWK_FREE (run->awk, p);
if (run->errnum == ASE_AWK_ENOERR)
{
/* if the error number has not been
* set by the user handler */
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
}
return -1;
}
/* chain it */
p->next = run->extio.chain;
run->extio.chain = p;
/* usually, n == 0 indicates that it has reached the end
* of the input. the user io handler can return 0 for the
* open request if it doesn't have any files to open. One
* advantage of doing this would be that you can skip the
* entire pattern-block matching and exeuction. */
if (n == 0)
{
p->in.eos = ase_true;
return 0;
}
}
if (p->in.eos)
{
/* no more streams. */
return 0;
}
/* ready to read a line */
ase_str_clear (buf);
/* get the record separator */
rs = ase_awk_getglobal (run, ASE_AWK_GLOBAL_RS);
ase_awk_refupval (run, rs);
if (rs->type == ASE_AWK_VAL_NIL)
{
rs_ptr = ASE_NULL;
rs_len = 0;
}
else if (rs->type == ASE_AWK_VAL_STR)
{
rs_ptr = ((ase_awk_val_str_t*)rs)->buf;
rs_len = ((ase_awk_val_str_t*)rs)->len;
}
else
{
rs_ptr = ase_awk_valtostr (
run, rs, ASE_AWK_VALTOSTR_CLEAR, ASE_NULL, &rs_len);
if (rs_ptr == ASE_NULL)
{
ase_awk_refdownval (run, rs);
return -1;
}
}
ret = 1;
/* call the io handler */
while (1)
{
if (p->in.pos >= p->in.len)
{
ase_ssize_t n;
if (p->in.eof)
{
if (ASE_STR_LEN(buf) == 0) ret = 0;
break;
}
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_READ,
p, p->in.buf, ASE_COUNTOF(p->in.buf));
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
{
/* if the error number has not been
* set by the user handler */
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
}
ret = -1;
break;
}
if (n == 0)
{
p->in.eof = ase_true;
if (ASE_STR_LEN(buf) == 0) ret = 0;
else if (rs_len >= 2)
{
/* when RS is multiple characters, it needs to check
* for the match at the end of the input stream as
* the buffer has been appened with the last character
* after the previous matchrex has failed */
const ase_char_t* match_ptr;
ase_size_t match_len;
ASE_ASSERT (run->global.rs != ASE_NULL);
n = ase_awk_matchrex (
run->awk, run->global.rs,
((run->global.ignorecase)? ASE_AWK_REX_IGNORECASE: 0),
ASE_STR_BUF(buf), ASE_STR_LEN(buf),
&match_ptr, &match_len, &run->errnum);
if (n == -1)
{
ret = -1;
break;
}
if (n == 1)
{
/* the match should be found at the end of
* the current buffer */
ASE_ASSERT (
ASE_STR_BUF(buf) + ASE_STR_LEN(buf) ==
match_ptr + match_len);
ASE_STR_LEN(buf) -= match_len;
break;
}
}
break;
}
p->in.len = n;
p->in.pos = 0;
}
pc = c;
c = p->in.buf[p->in.pos++];
if (rs_ptr == ASE_NULL)
{
/* separate by a new line */
if (c == ASE_T('\n'))
{
if (pc == ASE_T('\r') &&
ASE_STR_LEN(buf) > 0)
{
ASE_STR_LEN(buf) -= 1;
}
break;
}
}
else if (rs_len == 0)
{
/* separate by a blank line */
if (c == ASE_T('\n'))
{
if (pc == ASE_T('\r') &&
ASE_STR_LEN(buf) > 0)
{
ASE_STR_LEN(buf) -= 1;
}
}
if (line_len == 0 && c == ASE_T('\n'))
{
if (ASE_STR_LEN(buf) <= 0)
{
/* if the record is empty when a blank
* line is encountered, the line
* terminator should not be added to
* the record */
continue;
}
/* when a blank line is encountered,
* it needs to snip off the line
* terminator of the previous line */
ASE_STR_LEN(buf) -= 1;
break;
}
}
else if (rs_len == 1)
{
if (c == rs_ptr[0]) break;
}
else
{
const ase_char_t* match_ptr;
ase_size_t match_len;
ASE_ASSERT (run->global.rs != ASE_NULL);
n = ase_awk_matchrex (
run->awk, run->global.rs,
((run->global.ignorecase)? ASE_AWK_REX_IGNORECASE: 0),
ASE_STR_BUF(buf), ASE_STR_LEN(buf),
&match_ptr, &match_len, &run->errnum);
if (n == -1)
{
ret = -1;
p->in.pos--; /* unread the character in c */
break;
}
if (n == 1)
{
/* the match should be found at the end of
* the current buffer */
ASE_ASSERT (
ASE_STR_BUF(buf) + ASE_STR_LEN(buf) ==
match_ptr + match_len);
ASE_STR_LEN(buf) -= match_len;
p->in.pos--; /* unread the character in c */
break;
}
}
if (ase_str_ccat (buf, c) == (ase_size_t)-1)
{
ase_awk_setrunerror (
run, ASE_AWK_ENOMEM, 0, ASE_NULL, 0);
ret = -1;
break;
}
/* TODO: handle different line terminator like \r\n */
if (c == ASE_T('\n')) line_len = 0;
else line_len = line_len + 1;
}
if (rs_ptr != ASE_NULL &&
rs->type != ASE_AWK_VAL_STR) ASE_AWK_FREE (run->awk, rs_ptr);
ase_awk_refdownval (run, rs);
return ret;
}
int ase_awk_writeextio_val (
ase_awk_run_t* run, int out_type,
const ase_char_t* name, ase_awk_val_t* v)
{
ase_char_t* str;
ase_size_t len;
int n;
if (v->type == ASE_AWK_VAL_STR)
{
str = ((ase_awk_val_str_t*)v)->buf;
len = ((ase_awk_val_str_t*)v)->len;
}
else
{
str = ase_awk_valtostr (
run, v,
ASE_AWK_VALTOSTR_CLEAR | ASE_AWK_VALTOSTR_PRINT,
ASE_NULL, &len);
if (str == ASE_NULL) return -1;
}
n = ase_awk_writeextio_str (run, out_type, name, str, len);
if (v->type != ASE_AWK_VAL_STR) ASE_AWK_FREE (run->awk, str);
return n;
}
int ase_awk_writeextio_str (
ase_awk_run_t* run, int out_type,
const ase_char_t* name, ase_char_t* str, ase_size_t len)
{
ase_awk_extio_t* p = run->extio.chain;
ase_awk_io_t handler;
int extio_type, extio_mode, extio_mask, n;
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_type_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mode_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mask_map));
/* translate the out_type into the relevant extio type and mode */
extio_type = out_type_map[out_type];
extio_mode = out_mode_map[out_type];
extio_mask = out_mask_map[out_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
/* look for the corresponding extio for name */
while (p != ASE_NULL)
{
/* the file "1.tmp", in the following code snippets,
* would be opened by the first print statement, but not by
* the second print statement. this is because
* both ASE_AWK_OUT_FILE and ASE_AWK_OUT_FILE_APPEND are
* translated to ASE_AWK_EXTIO_FILE and it is used to
* keep track of file handles..
*
* print "1111" >> "1.tmp"
* print "1111" > "1.tmp"
*/
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name, name) == 0) break;
p = p->next;
}
/* if there is not corresponding extio for name, create one */
if (p == ASE_NULL)
{
p = (ase_awk_extio_t*) ASE_AWK_MALLOC (
run->awk, ASE_SIZEOF(ase_awk_extio_t));
if (p == ASE_NULL)
{
ase_awk_setrunerror (
run, ASE_AWK_ENOMEM, 0, ASE_NULL, 0);
return -1;
}
p->name = ase_strdup (name, &run->awk->prmfns.mmgr);
if (p->name == ASE_NULL)
{
ASE_AWK_FREE (run->awk, p);
ase_awk_setrunerror (
run, ASE_AWK_ENOMEM, 0, ASE_NULL, 0);
return -1;
}
p->run = run;
p->type = (extio_type | extio_mask);
p->mode = extio_mode;
p->handle = ASE_NULL;
p->next = ASE_NULL;
p->custom_data = run->extio.custom_data;
p->out.eof = ase_false;
p->out.eos = ase_false;
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_OPEN, p, ASE_NULL, 0);
if (n <= -1)
{
ASE_AWK_FREE (run->awk, p->name);
ASE_AWK_FREE (run->awk, p);
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
/* chain it */
p->next = run->extio.chain;
run->extio.chain = p;
/* usually, n == 0 indicates that it has reached the end
* of the input. the user io handler can return 0 for the
* open request if it doesn't have any files to open. One
* advantage of doing this would be that you can skip the
* entire pattern-block matching and exeuction. */
if (n == 0)
{
p->out.eos = ase_true;
return 0;
}
}
if (p->out.eos)
{
/* no more streams */
return 0;
}
if (p->out.eof)
{
/* it has reached the end of the stream but this function
* has been recalled */
return 0;
}
while (len > 0)
{
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_WRITE, p, str, len);
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
if (n == 0)
{
p->out.eof = ase_true;
return 0;
}
len -= n;
str += n;
}
return 1;
}
int ase_awk_flushextio (
ase_awk_run_t* run, int out_type, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain;
ase_awk_io_t handler;
int extio_type, /*extio_mode,*/ extio_mask, n;
ase_bool_t ok = ase_false;
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_type_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mode_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mask_map));
/* translate the out_type into the relevant extio type and mode */
extio_type = out_type_map[out_type];
/*extio_mode = out_mode_map[out_type];*/
extio_mask = out_mask_map[out_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
/* look for the corresponding extio for name */
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
(name == ASE_NULL || ase_strcmp(p->name,name) == 0))
{
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_FLUSH, p, ASE_NULL, 0);
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
ok = ase_true;
}
p = p->next;
}
if (ok) return 0;
/* there is no corresponding extio for name */
ase_awk_setrunerrnum (run, ASE_AWK_EIONONE);
return -1;
}
int ase_awk_nextextio_read (
ase_awk_run_t* run, int in_type, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain;
ase_awk_io_t handler;
int extio_type, /*extio_mode,*/ extio_mask, n;
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_type_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mode_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mask_map));
/* translate the in_type into the relevant extio type and mode */
extio_type = in_type_map[in_type];
/*extio_mode = in_mode_map[in_type];*/
extio_mask = in_mask_map[in_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name,name) == 0) break;
p = p->next;
}
if (p == ASE_NULL)
{
/* something is totally wrong */
ASE_ASSERT (
!"should never happen - cannot find the relevant extio entry");
ase_awk_setrunerror (run, ASE_AWK_EINTERN, 0, ASE_NULL, 0);
return -1;
}
if (p->in.eos)
{
/* no more streams. */
return 0;
}
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_NEXT, p, ASE_NULL, 0);
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
if (n == 0)
{
/* the next stream cannot be opened.
* set the eos flags so that the next call to nextextio_read
* will return 0 without executing the handler */
p->in.eos = ase_true;
}
else
{
/* as the next stream has been opened successfully,
* the eof flag should be cleared if set */
p->in.eof = ase_false;
/* also the previous input buffer must be reset */
p->in.pos = 0;
p->in.len = 0;
}
return n;
}
int ase_awk_nextextio_write (
ase_awk_run_t* run, int out_type, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain;
ase_awk_io_t handler;
int extio_type, /*extio_mode,*/ extio_mask, n;
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_type_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mode_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mask_map));
/* translate the out_type into the relevant extio type and mode */
extio_type = out_type_map[out_type];
/*extio_mode = out_mode_map[out_type];*/
extio_mask = out_mask_map[out_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name,name) == 0) break;
p = p->next;
}
if (p == ASE_NULL)
{
/* something is totally wrong */
ASE_ASSERT (!"should never happen - cannot find the relevant extio entry");
ase_awk_setrunerror (run, ASE_AWK_EINTERN, 0, ASE_NULL, 0);
return -1;
}
if (p->out.eos)
{
/* no more streams. */
return 0;
}
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_NEXT, p, ASE_NULL, 0);
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
if (n == 0)
{
/* the next stream cannot be opened.
* set the eos flags so that the next call to nextextio_write
* will return 0 without executing the handler */
p->out.eos = ase_true;
}
else
{
/* as the next stream has been opened successfully,
* the eof flag should be cleared if set */
p->out.eof = ase_false;
}
return n;
}
int ase_awk_closeextio_read (
ase_awk_run_t* run, int in_type, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain, * px = ASE_NULL;
ase_awk_io_t handler;
int extio_type, /*extio_mode,*/ extio_mask;
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_type_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mode_map));
ASE_ASSERT (in_type >= 0 && in_type <= ASE_COUNTOF(in_mask_map));
/* translate the in_type into the relevant extio type and mode */
extio_type = in_type_map[in_type];
/*extio_mode = in_mode_map[in_type];*/
extio_mask = in_mask_map[in_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerrnum (run, ASE_AWK_EIOUSER);
return -1;
}
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name, name) == 0)
{
ase_awk_io_t handler;
handler = run->extio.handler[p->type & MASK_CLEAR];
if (handler != ASE_NULL)
{
if (handler (ASE_AWK_IO_CLOSE, p, ASE_NULL, 0) <= -1)
{
/* this is not a run-time error.*/
ase_awk_setrunerror (run, ASE_AWK_EIOIMPL, 0, ASE_NULL, 0);
return -1;
}
}
if (px != ASE_NULL) px->next = p->next;
else run->extio.chain = p->next;
ASE_AWK_FREE (run->awk, p->name);
ASE_AWK_FREE (run->awk, p);
return 0;
}
px = p;
p = p->next;
}
/* the name given is not found */
ase_awk_setrunerrnum (run, ASE_AWK_EIONONE);
return -1;
}
int ase_awk_closeextio_write (
ase_awk_run_t* run, int out_type, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain, * px = ASE_NULL;
ase_awk_io_t handler;
int extio_type, /*extio_mode,*/ extio_mask;
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_type_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mode_map));
ASE_ASSERT (out_type >= 0 && out_type <= ASE_COUNTOF(out_mask_map));
/* translate the out_type into the relevant extio type and mode */
extio_type = out_type_map[out_type];
/*extio_mode = out_mode_map[out_type];*/
extio_mask = out_mask_map[out_type];
handler = run->extio.handler[extio_type];
if (handler == ASE_NULL)
{
/* no io handler provided */
ase_awk_setrunerror (run, ASE_AWK_EIOUSER, 0, ASE_NULL, 0);
return -1;
}
while (p != ASE_NULL)
{
if (p->type == (extio_type | extio_mask) &&
ase_strcmp (p->name, name) == 0)
{
ase_awk_io_t handler;
handler = run->extio.handler[p->type & MASK_CLEAR];
if (handler != ASE_NULL)
{
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
if (handler (ASE_AWK_IO_CLOSE, p, ASE_NULL, 0) <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
}
if (px != ASE_NULL) px->next = p->next;
else run->extio.chain = p->next;
ASE_AWK_FREE (run->awk, p->name);
ASE_AWK_FREE (run->awk, p);
return 0;
}
px = p;
p = p->next;
}
ase_awk_setrunerrnum (run, ASE_AWK_EIONONE);
return -1;
}
int ase_awk_closeextio (ase_awk_run_t* run, const ase_char_t* name)
{
ase_awk_extio_t* p = run->extio.chain, * px = ASE_NULL;
while (p != ASE_NULL)
{
/* it handles the first that matches the given name
* regardless of the extio type */
if (ase_strcmp (p->name, name) == 0)
{
ase_awk_io_t handler;
handler = run->extio.handler[p->type & MASK_CLEAR];
if (handler != ASE_NULL)
{
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
if (handler (ASE_AWK_IO_CLOSE, p, ASE_NULL, 0) <= -1)
{
/* this is not a run-time error.*/
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
return -1;
}
}
if (px != ASE_NULL) px->next = p->next;
else run->extio.chain = p->next;
ASE_AWK_FREE (run->awk, p->name);
ASE_AWK_FREE (run->awk, p);
return 0;
}
px = p;
p = p->next;
}
ase_awk_setrunerrnum (run, ASE_AWK_EIONONE);
return -1;
}
void ase_awk_clearextio (ase_awk_run_t* run)
{
ase_awk_extio_t* next;
ase_awk_io_t handler;
int n;
while (run->extio.chain != ASE_NULL)
{
handler = run->extio.handler[
run->extio.chain->type & MASK_CLEAR];
next = run->extio.chain->next;
if (handler != ASE_NULL)
{
ase_awk_setrunerrnum (run, ASE_AWK_ENOERR);
n = handler (ASE_AWK_IO_CLOSE, run->extio.chain, ASE_NULL, 0);
if (n <= -1)
{
if (run->errnum == ASE_AWK_ENOERR)
ase_awk_setrunerrnum (run, ASE_AWK_EIOIMPL);
/* TODO: some warnings need to be shown??? */
}
}
ASE_AWK_FREE (run->awk, run->extio.chain->name);
ASE_AWK_FREE (run->awk, run->extio.chain);
run->extio.chain = next;
}
}
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