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warnings and stream read wchar simplification

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This commit is contained in:
Vitor Santos Costa 2016-08-01 19:17:56 -05:00
parent a82a72fc14
commit 304489c74f
6 changed files with 394 additions and 328 deletions
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26
os/format.c
View File

@ -982,23 +982,22 @@ static Int doformat(volatile Term otail, volatile Term oargs,
goto do_format_control_sequence_error;
t = targs[targ++];
yhandle_t slf = Yap_StartSlots();
Yap_plwrite(t, GLOBAL_Stream + sno, 0,
Handle_vars_f | To_heap_f,
Yap_plwrite(t, GLOBAL_Stream + sno, 0, Handle_vars_f | To_heap_f,
GLOBAL_MaxPriority);
Yap_CloseSlots(slf);
Yap_CloseSlots(slf);
break;
case 'W':
if (targ > tnum - 2 || has_repeats)
goto do_format_control_sequence_error;
targ -= 2;
{
yhandle_t slf = Yap_StartSlots();
if (!Yap_WriteTerm( sno, targs[1], targs[0] PASS_REGS)) {
targ -= 2;
{
yhandle_t slf = Yap_StartSlots();
if (!Yap_WriteTerm(sno, targs[1], targs[0] PASS_REGS)) {
Yap_CloseSlots(slf);
goto do_default_error;
};
Yap_CloseSlots(slf);
goto do_default_error;
};
Yap_CloseSlots(slf);
}
}
break;
case '~':
if (has_repeats)
@ -1200,7 +1199,7 @@ static Int with_output_to(USES_REGS1) {
Term tin = Deref(ARG1);
Functor f;
bool out;
bool mem_stream = false;
bool my_mem_stream;
yhandle_t hdl = Yap_PushHandle(tin);
if (IsVarTerm(tin)) {
Yap_Error(INSTANTIATION_ERROR, tin, "with_output_to/3");
@ -1215,6 +1214,7 @@ static Int with_output_to(USES_REGS1) {
/* needs to change LOCAL_c_output_stream for write */
output_stream = Yap_CheckStream(ARG1, Output_Stream_f, "format/3");
my_mem_stream = false;
f = NIL;
}
if (output_stream == -1) {
return false;
@ -1223,7 +1223,7 @@ static Int with_output_to(USES_REGS1) {
out = Yap_Execute(Deref(ARG2) PASS_REGS);
LOCK(GLOBAL_Stream[output_stream].streamlock);
LOCAL_c_output_stream = old_out;
if (mem_stream) {
if (my_mem_stream) {
Term tat;
Term inp = Yap_GetFromHandle(hdl);
if (out) {

100
os/getw.h
View File

@ -2,9 +2,9 @@
/// compose a wide char from a sequence of getchars
/// this is a slow lane routine, called if no specialised code
/// isavailable.
static int GETW(int sno) {
extern int get_wchar(int sno) {
StreamDesc *st = GLOBAL_Stream + sno;
int ch = GETC();
int ch = st->stream_getc(sno);
if (ch == -1)
return post_process_weof(st);
@ -31,7 +31,7 @@ static int GETW(int sno) {
buf[0] = ch;
int n = 1;
while ((out = mbrtowc(&wch, buf, 1, &(mbstate))) != 1) {
int ch = buf[0] = GETC();
int ch = buf[0] = st->stream_getc(sno);
n++;
if (ch == -1)
return post_process_weof(st);
@ -49,7 +49,7 @@ static int GETW(int sno) {
// if ((ch - 0xc2) > (0xf4-0xc2)) return UTF8PROC_ERROR_INVALIDUTF8;
if (ch < 0xe0) { // 2-byte sequence
// Must have valid continuation character
int c1 = buf[0] = GETC();
int c1 = buf[0] = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
// if (!utf_cont(*str)) return UTF8PROC_ERROR_INVALIDUTF8;
@ -62,22 +62,22 @@ static int GETW(int sno) {
// Check for surrogate chars
// if (ch == 0xed && *str > 0x9f)
// return UTF8PROC_ERROR_INVALIDUTF8;
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
int c2 = GETC();
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
wch = ((ch & 0xf) << 12) | ((c1 & 0x3f) << 6) | (c2 & 0x3f);
return post_process_read_wchar(wch, 3, st);
} else {
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
int c2 = GETC();
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
int c3 = GETC();
int c3 = st->stream_getc(sno);
if (c3 == -1)
return post_process_weof(st);
wch = ((ch & 7) << 18) | ((c1 & 0x3f) << 12) | ((c2 & 0x3f) << 6) |
@ -89,15 +89,15 @@ static int GETW(int sno) {
// little-endian: start with big shot
{
int wch;
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (c1 << 8) + ch;
if (wch >= 0xd800 && wch < 0xdc00) {
int c2 = GETC();
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
int c3 = GETC();
int c3 = st->stream_getc(sno);
if (c3 == -1)
return post_process_weof(st);
wch = wch + (((c3 << 8) + c2) << wch) + SURROGATE_OFFSET;
@ -110,15 +110,15 @@ static int GETW(int sno) {
// little-endian: start with big shot
{
int wch;
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (c1) + (ch << 8);
if (wch >= 0xd800 && wch < 0xdc00) {
int c3 = GETC();
int c3 = st->stream_getc(sno);
if (c3 == -1)
return post_process_weof(st);
int c2 = GETC();
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
wch = (((c3 << 8) + c2) << 10) + wch + SURROGATE_OFFSET;
@ -131,7 +131,7 @@ static int GETW(int sno) {
// little-endian: start with big shot
{
int wch;
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (c1) + (ch << 8);
@ -142,7 +142,7 @@ static int GETW(int sno) {
// little-endian: start with big shot
{
int wch;
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (c1 << 8) + ch;
@ -155,19 +155,19 @@ static int GETW(int sno) {
{
int wch = ch;
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = wch + c1;
}
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (wch << 8) + c1;
}
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch = (wch << 8) + c1;
@ -179,19 +179,19 @@ static int GETW(int sno) {
{
int wch = ch;
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch += c1 << 8;
}
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch += c1 << 16;
}
{
int c1 = GETC();
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
wch += c1 << 24;
@ -204,3 +204,57 @@ static int GETW(int sno) {
return -1;
}
}
extern int get_wchar_UTF8(int sno) {
StreamDesc *st = GLOBAL_Stream + sno;
int ch = st->stream_getc(sno);
if (ch == -1)
return post_process_weof(st);
else {
int wch;
unsigned char buf[8];
if (ch < 0x80) {
return post_process_read_wchar(ch, 1, st);
}
// if ((ch - 0xc2) > (0xf4-0xc2)) return UTF8PROC_ERROR_INVALIDUTF8;
if (ch < 0xe0) { // 2-byte sequence
// Must have valid continuation character
int c1 = buf[0] = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
// if (!utf_cont(*str)) return UTF8PROC_ERROR_INVALIDUTF8;
wch = ((ch & 0x1f) << 6) | (c1 & 0x3f);
return post_process_read_wchar(wch, 2, st);
}
if (ch < 0xf0) { // 3-byte sequence
// if ((str + 1 >= end) || !utf_cont(*str) || !utf_cont(str[1]))
// return UTF8PROC_ERROR_INVALIDUTF8;
// Check for surrogate chars
// if (ch == 0xed && *str > 0x9f)
// return UTF8PROC_ERROR_INVALIDUTF8;
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
wch = ((ch & 0xf) << 12) | ((c1 & 0x3f) << 6) | (c2 & 0x3f);
return post_process_read_wchar(wch, 3, st);
} else {
int c1 = st->stream_getc(sno);
if (c1 == -1)
return post_process_weof(st);
int c2 = st->stream_getc(sno);
if (c2 == -1)
return post_process_weof(st);
int c3 = st->stream_getc(sno);
if (c3 == -1)
return post_process_weof(st);
wch = ((ch & 7) << 18) | ((c1 & 0x3f) << 12) | ((c2 & 0x3f) << 6) |
(c3 & 0x3f);
return post_process_read_wchar(wch, 4, st);
}
}
}

20
os/iopreds.c
View File

@ -97,16 +97,9 @@ static char SccsId[] = "%W% %G%";
#define S_ISDIR(x) (((x)&_S_IFDIR) == _S_IFDIR)
#endif
#endif
#include "iopreds.h"
//#define GETW get_wchar_from_FILE
//#endif
#define GETC() fgetwc(st->file)
#include "getw.h"
#undef GETW
#undef GETC
#define GETW get_wchar
#define GETC() st->stream_getc(sno)
#include "iopreds.h"
#include "getw.h"
static int get_wchar_from_file(int);
@ -254,7 +247,7 @@ static void unix_upd_stream_info(StreamDesc *s) {
void Yap_DefaultStreamOps(StreamDesc *st) {
CACHE_REGS
st->stream_wputc = put_wchar;
st->stream_wgetc = get_wchar;
st->stream_wgetc = get_wchar_UTF8;
st->stream_putc = FilePutc;
st->stream_getc = PlGetc;
if (st->status & (Promptable_Stream_f)) {
@ -664,10 +657,9 @@ int PlGetc(int sno) {
}
// layered version
static int get_wchar__(int sno) { return fgetwc(GLOBAL_Stream[sno].file); }
static int get_wchar_from_file(int sno) {
return post_process_read_wchar(get_wchar__(sno), 1, GLOBAL_Stream + sno);
static inline int get_wchar_from_file(int sno) {
return post_process_read_wchar(fgetwc(GLOBAL_Stream[sno].file), 1,
GLOBAL_Stream + sno);
}
#ifndef MB_LEN_MAX

567
os/readterm.c
View File

@ -1,28 +1,28 @@
/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: iopreds.c *
* Last rev: 5/2/88 *
* mods: *
* comments: Input/Output C implemented predicates *
* *
*************************************************************************/
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: iopreds.c *
* Last rev: 5/2/88 *
* mods: *
* comments: Input/Output C implemented predicates *
* *
*************************************************************************/
#ifdef SCCS
static char SccsId[] = "%W% %G%";
#endif
/*
* This file includes the definition of a miscellania of standard predicates
* for yap refering to: Files and GLOBAL_Streams, Simple Input/Output,
*
*/
* This file includes the definition of a miscellania of standard predicates
* for yap refering to: Files and GLOBAL_Streams, Simple Input/Output,
*
*/
#include "Yap.h"
#include "YapFlags.h"
@ -110,19 +110,19 @@ static void clean_vars(VarEntry *p) {
#ifdef O_QUASIQUOTATIONS
/** '$qq_open'(+QQRange, -Stream) is det.
Opens a quasi-quoted memory range.
Opens a quasi-quoted memory range.
@arg QQRange is a term '$quasi_quotation'(ReadData, Start, Length)
@arg Stream is a UTF-8 encoded string, whose position indication
reflects the location in the real file.
@arg QQRange is a term '$quasi_quotation'(ReadData, Start, Length)
@arg Stream is a UTF-8 encoded string, whose position indication
reflects the location in the real file.
*/
static Int qq_open(USES_REGS1) {
PRED_LD
Term t = Deref(ARG1);
Term t = Deref(ARG1);
if (!IsVarTerm(t) && IsApplTerm(t) && FunctorOfTerm(t) =
FunctorDQuasiQuotation) {
FunctorDQuasiQuotation) {
void *ptr;
char *start;
size_t l int s;
@ -173,26 +173,26 @@ static int parse_quasi_quotations(ReadData _PL_rd ARG_LD) {
} else
return TRUE;
} else if (_PL_rd->quasi_quotations) /* user option, but no quotes */
{
return PL_unify_nil(_PL_rd->quasi_quotations);
} else
{
return PL_unify_nil(_PL_rd->quasi_quotations);
} else
return TRUE;
}
#endif /*O_QUASIQUOTATIONS*/
#define READ_DEFS() \
PAR("comments", list_filler, READ_COMMENTS) \
, PAR("module", isatom, READ_MODULE), PAR("priority", nat, READ_PRIORITY), \
PAR("quasi_quotations", filler, READ_QUASI_QUOTATIONS), \
PAR("term_position", filler, READ_TERM_POSITION), \
PAR("syntax_errors", isatom, READ_SYNTAX_ERRORS), \
PAR("singletons", filler, READ_SINGLETONS), \
PAR("variables", filler, READ_VARIABLES), \
PAR("variable_names", filler, READ_VARIABLE_NAMES), \
PAR("character_escapes", booleanFlag, READ_CHARACTER_ESCAPES), \
PAR("backquoted_string", isatom, READ_BACKQUOTED_STRING), \
PAR("cycles", ok, READ_CYCLES), PAR(NULL, ok, READ_END)
#define READ_DEFS() \
PAR("comments", list_filler, READ_COMMENTS) \
, PAR("module", isatom, READ_MODULE), PAR("priority", nat, READ_PRIORITY), \
PAR("quasi_quotations", filler, READ_QUASI_QUOTATIONS), \
PAR("term_position", filler, READ_TERM_POSITION), \
PAR("syntax_errors", isatom, READ_SYNTAX_ERRORS), \
PAR("singletons", filler, READ_SINGLETONS), \
PAR("variables", filler, READ_VARIABLES), \
PAR("variable_names", filler, READ_VARIABLE_NAMES), \
PAR("character_escapes", booleanFlag, READ_CHARACTER_ESCAPES), \
PAR("backquoted_string", isatom, READ_BACKQUOTED_STRING), \
PAR("cycles", ok, READ_CYCLES), PAR(NULL, ok, READ_END)
#define PAR(x, y, z) z
@ -200,24 +200,24 @@ typedef enum open_enum_choices { READ_DEFS() } read_choices_t;
#undef PAR
#define PAR(x, y, z) \
#define PAR(x, y, z) \
{ x, y, z }
static const param_t read_defs[] = {READ_DEFS()};
#undef PAR
/**
* Syntax Error Handler
*
* @par tokptr: the sequence of tokens
* @par sno: the stream numbet
*
* Implicit arguments:
* +
*/
* Syntax Error Handler
*
* @par tokptr: the sequence of tokens
* @par sno: the stream numbet
*
* Implicit arguments:
* +
*/
static Term syntax_error(TokEntry *errtok, int sno, Term cmod) {
CACHE_REGS
Term info;
Term info;
Term startline, errline, endline;
Term tf[4];
Term *tailp = tf + 3;
@ -264,71 +264,93 @@ static Term syntax_error(TokEntry *errtok, int sno, Term cmod) {
t0[0] = TermNil;
}
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomAtom, 1), 1, t0);
} break;
case QuasiQuotes_tok: {
Term t0[2];
t0[0] = MkAtomTerm(Yap_LookupAtom("<QQ>"));
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomAtom, 1), 1, t0);
} break;
case WQuasiQuotes_tok: {
Term t0[2];
t0[0] = MkAtomTerm(Yap_LookupAtom("<WideQQ>"));
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomAtom, 1), 1, t0);
} break;
}
break;
case QuasiQuotes_tok:
{
Term t0[2];
t0[0] = MkAtomTerm(Yap_LookupAtom("<QQ>"));
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomAtom, 1), 1, t0);
}
break;
case WQuasiQuotes_tok:
{
Term t0[2];
t0[0] = MkAtomTerm(Yap_LookupAtom("<WideQQ>"));
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomAtom, 1), 1, t0);
}
break;
case Number_tok:
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomNumber, 1), 1, &(tok->TokInfo));
break;
case Var_tok: {
Term t[2];
VarEntry *varinfo = (VarEntry *)info;
case Var_tok:
{
Term t[2];
VarEntry *varinfo = (VarEntry *)info;
t[0] = MkIntTerm(0);
t[1] = Yap_CharsToString(varinfo->VarRep, ENC_ISO_LATIN1 PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomGVar, 2), 2, t);
} break;
case String_tok: {
Term t0 = Yap_CharsToTDQ((char *)info, cmod, ENC_ISO_LATIN1 PASS_REGS);
if (!t0) {
return 0;
t[0] = MkIntTerm(0);
t[1] = Yap_CharsToString(varinfo->VarRep, ENC_ISO_LATIN1 PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomGVar, 2), 2, t);
}
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
} break;
case WString_tok: {
Term t0 = Yap_WCharsToTDQ((wchar_t *)info, cmod PASS_REGS);
if (!t0)
return 0;
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
} break;
case BQString_tok: {
Term t0 = Yap_CharsToTBQ((char *)info, cmod, ENC_ISO_LATIN1 PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
} break;
case WBQString_tok: {
Term t0 = Yap_WCharsToTBQ((wchar_t *)info, cmod PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
} break;
case Error_tok: {
ts[0] = MkAtomTerm(AtomError);
} break;
break;
case String_tok:
{
Term t0 = Yap_CharsToTDQ((char *)info, cmod, ENC_ISO_LATIN1 PASS_REGS);
if (!t0) {
return 0;
}
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
}
break;
case WString_tok:
{
Term t0 = Yap_WCharsToTDQ((wchar_t *)info, cmod PASS_REGS);
if (!t0)
return 0;
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
}
break;
case BQString_tok:
{
Term t0 = Yap_CharsToTBQ((char *)info, cmod, ENC_ISO_LATIN1 PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
}
break;
case WBQString_tok:
{
Term t0 = Yap_WCharsToTBQ((wchar_t *)info, cmod PASS_REGS);
ts[0] = Yap_MkApplTerm(Yap_MkFunctor(AtomString, 1), 1, &t0);
}
break;
case Error_tok:
{
ts[0] = MkAtomTerm(AtomError);
}
break;
case eot_tok:
endline = MkIntegerTerm(tok->TokPos);
ts[0] = MkAtomTerm(Yap_LookupAtom("EOT"));
break;
case Ponctuation_tok: {
char s[2];
s[1] = '\0';
if ((info) == 'l') {
s[0] = '(';
} else {
s[0] = (char)info;
case Ponctuation_tok:
{
char s[2];
s[1] = '\0';
if ((info) == 'l') {
s[0] = '(';
} else {
s[0] = (char)info;
}
ts[0] = MkAtomTerm(Yap_LookupAtom(s));
}
ts[0] = MkAtomTerm(Yap_LookupAtom(s));
}
}
if (tok->TokNext) {
tok = tok->TokNext;
if (!tok)
} else {
endline = MkIntegerTerm(tok->TokPos);
tok = NULL;
break;
}
*tailp = MkPairTerm(ts[0], TermNil);
tailp = RepPair(*tailp) + 1;
}
@ -398,7 +420,7 @@ static xarg *setClauseReadEnv(Term opts, FEnv *fe, struct renv *re,
int inp_stream);
static xarg *setReadEnv(Term opts, FEnv *fe, struct renv *re, int inp_stream) {
CACHE_REGS
LOCAL_VarTable = NULL;
LOCAL_VarTable = NULL;
LOCAL_AnonVarTable = NULL;
fe->enc = GLOBAL_Stream[inp_stream].encoding;
xarg *args = Yap_ArgListToVector(opts, read_defs, READ_END);
@ -495,7 +517,7 @@ typedef enum {
Int Yap_FirstLineInParse(void) {
CACHE_REGS
return LOCAL_StartLineCount;
return LOCAL_StartLineCount;
}
#define PUSHFET(X) *HR++ = fe->X
@ -504,7 +526,7 @@ Int Yap_FirstLineInParse(void) {
static void reset_regs(TokEntry *tokstart, FEnv *fe) {
CACHE_REGS
restore_machine_regs();
restore_machine_regs();
/* restart global */
PUSHFET(qq);
@ -531,7 +553,7 @@ static void reset_regs(TokEntry *tokstart, FEnv *fe) {
static Term get_variables(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v;
Term v;
if (fe->vp) {
while (true) {
fe->old_H = HR;
@ -551,7 +573,7 @@ static Term get_variables(FEnv *fe, TokEntry *tokstart) {
static Term get_varnames(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v;
Term v;
if (fe->np) {
while (true) {
fe->old_H = HR;
@ -571,7 +593,7 @@ static Term get_varnames(FEnv *fe, TokEntry *tokstart) {
static Term get_singletons(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v;
Term v;
if (fe->sp) {
while (TRUE) {
fe->old_H = HR;
@ -589,7 +611,7 @@ static Term get_singletons(FEnv *fe, TokEntry *tokstart) {
static void warn_singletons(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v;
Term v;
fe->sp = TermNil;
v = get_singletons(fe, tokstart);
if (v && v != TermNil) {
@ -611,7 +633,7 @@ static void warn_singletons(FEnv *fe, TokEntry *tokstart) {
static Term get_stream_position(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v;
Term v;
if (fe->tp) {
while (true) {
fe->old_H = HR;
@ -629,7 +651,7 @@ static Term get_stream_position(FEnv *fe, TokEntry *tokstart) {
static bool complete_processing(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v1, v2, v3, vc, tp;
Term v1, v2, v3, vc, tp;
if (fe->t && fe->vp)
v1 = get_variables(fe, tokstart);
@ -657,15 +679,15 @@ static bool complete_processing(FEnv *fe, TokEntry *tokstart) {
// trail must be ok by now.]
if (fe->t) {
return (!v1 || Yap_unify(v1, fe->vp)) && (!v2 || Yap_unify(v2, fe->np)) &&
(!v3 || Yap_unify(v3, fe->sp)) && (!tp || Yap_unify(tp, fe->tp)) &&
(!vc || Yap_unify(vc, fe->tcomms));
(!v3 || Yap_unify(v3, fe->sp)) && (!tp || Yap_unify(tp, fe->tp)) &&
(!vc || Yap_unify(vc, fe->tcomms));
}
return true;
}
static bool complete_clause_processing(FEnv *fe, TokEntry *tokstart) {
CACHE_REGS
Term v_vp, v_vnames, v_comments, v_pos;
Term v_vp, v_vnames, v_comments, v_pos;
if (fe->t && fe->vp)
v_vp = get_variables(fe, tokstart);
@ -691,9 +713,9 @@ static bool complete_clause_processing(FEnv *fe, TokEntry *tokstart) {
// trail must be ok by now.]
if (fe->t) {
return (!v_vp || Yap_unify(v_vp, fe->vp)) &&
(!v_vnames || Yap_unify(v_vnames, fe->np)) &&
(!v_pos || Yap_unify(v_pos, fe->tp)) &&
(!v_comments || Yap_unify(v_comments, fe->tcomms));
(!v_vnames || Yap_unify(v_vnames, fe->np)) &&
(!v_pos || Yap_unify(v_pos, fe->tp)) &&
(!v_comments || Yap_unify(v_comments, fe->tcomms));
}
return true;
}
@ -711,8 +733,8 @@ static parser_state_t scan(REnv *re, FEnv *fe, int inp_stream);
static parser_state_t scanEOF(FEnv *fe, int inp_stream) {
CACHE_REGS
// bool store_comments = false;
TokEntry *tokstart = LOCAL_tokptr;
// bool store_comments = false;
TokEntry *tokstart = LOCAL_tokptr;
// check for an user abort
if (tokstart != NULL && tokstart->Tok != Ord(eot_tok)) {
/* we got the end of file from an abort */
@ -752,7 +774,7 @@ static parser_state_t scanEOF(FEnv *fe, int inp_stream) {
static parser_state_t initParser(Term opts, FEnv *fe, REnv *re, int inp_stream,
int nargs) {
CACHE_REGS
LOCAL_ErrorMessage = NULL;
LOCAL_ErrorMessage = NULL;
fe->old_TR = TR;
LOCAL_Error_TYPE = YAP_NO_ERROR;
LOCAL_SourceFileName = GLOBAL_Stream[inp_stream].name;
@ -789,11 +811,11 @@ static parser_state_t initParser(Term opts, FEnv *fe, REnv *re, int inp_stream,
static parser_state_t scan(REnv *re, FEnv *fe, int inp_stream) {
CACHE_REGS
/* preserve value of H after scanning: otherwise we may lose strings
and floats */
LOCAL_tokptr = LOCAL_toktide =
/* preserve value of H after scanning: otherwise we may lose strings
and floats */
LOCAL_tokptr = LOCAL_toktide =
Yap_tokenizer(GLOBAL_Stream + inp_stream, false, &fe->tpos);
Yap_tokenizer(GLOBAL_Stream + inp_stream, false, &fe->tpos);
if (LOCAL_ErrorMessage)
return YAP_SCANNING_ERROR;
if (LOCAL_tokptr->Tok != Ord(eot_tok)) {
@ -814,7 +836,7 @@ static parser_state_t scan(REnv *re, FEnv *fe, int inp_stream) {
static parser_state_t scanError(REnv *re, FEnv *fe, int inp_stream) {
CACHE_REGS
fe->t = 0;
fe->t = 0;
// running out of memory
if (LOCAL_Error_TYPE == RESOURCE_ERROR_TRAIL) {
LOCAL_Error_TYPE = YAP_NO_ERROR;
@ -854,7 +876,7 @@ static parser_state_t scanError(REnv *re, FEnv *fe, int inp_stream) {
static parser_state_t parseError(REnv *re, FEnv *fe, int inp_stream) {
CACHE_REGS
fe->t = 0;
fe->t = 0;
if (LOCAL_Error_TYPE == RESOURCE_ERROR_TRAIL ||
LOCAL_Error_TYPE == RESOURCE_ERROR_AUXILIARY_STACK ||
LOCAL_Error_TYPE == RESOURCE_ERROR_HEAP ||
@ -884,7 +906,7 @@ static parser_state_t parseError(REnv *re, FEnv *fe, int inp_stream) {
static parser_state_t parse(REnv *re, FEnv *fe, int inp_stream) {
CACHE_REGS
TokEntry *tokstart = LOCAL_tokptr;
TokEntry *tokstart = LOCAL_tokptr;
fe->t = Yap_Parse(re->prio, fe->enc, fe->cmod);
fe->toklast = LOCAL_tokptr;
LOCAL_tokptr = tokstart;
@ -939,33 +961,34 @@ Term Yap_read_term(int inp_stream, Term opts, int nargs) {
case YAP_PARSING_ERROR:
state = parseError(&re, &fe, inp_stream);
break;
case YAP_PARSING_FINISHED: {
CACHE_REGS
bool done;
if (fe.reading_clause)
done = complete_clause_processing(&fe, LOCAL_tokptr);
else
done = complete_processing(&fe, LOCAL_tokptr);
if (!done) {
state = YAP_PARSING_ERROR;
fe.t = 0;
break;
}
if (LOCAL_Error_TYPE != YAP_NO_ERROR) {
Yap_Error(LOCAL_Error_TYPE, ARG1, LOCAL_ErrorMessage);
}
case YAP_PARSING_FINISHED:
{
CACHE_REGS
bool done;
if (fe.reading_clause)
done = complete_clause_processing(&fe, LOCAL_tokptr);
else
done = complete_processing(&fe, LOCAL_tokptr);
if (!done) {
state = YAP_PARSING_ERROR;
fe.t = 0;
break;
}
if (LOCAL_Error_TYPE != YAP_NO_ERROR) {
Yap_Error(LOCAL_Error_TYPE, ARG1, LOCAL_ErrorMessage);
}
#if EMACS
first_char = tokstart->TokPos;
first_char = tokstart->TokPos;
#endif /* EMACS */
return fe.t;
}
return fe.t;
}
}
}
return 0;
}
static Int
read_term2(USES_REGS1) { /* '$read'(+Flag,?Term,?Module,?Vars,-Pos,-Err) */
read_term2(USES_REGS1) { /* '$read'(+Flag,?Term,?Module,?Vars,-Pos,-Err) */
Term rc;
yhandle_t h = Yap_PushHandle(ARG1);
if ((rc = Yap_read_term(LOCAL_c_input_stream, ARG2, 2)) == 0)
@ -975,7 +998,7 @@ static Int
}
static Int read_term(
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
int inp_stream;
Term out;
@ -992,14 +1015,14 @@ static Int read_term(
return out != 0L && Yap_unify(tf, out);
}
#define READ_CLAUSE_DEFS() \
PAR("comments", list_filler, READ_CLAUSE_COMMENTS) \
, PAR("module", isatom, READ_CLAUSE_MODULE), \
PAR("variable_names", filler, READ_CLAUSE_VARIABLE_NAMES), \
PAR("variables", filler, READ_CLAUSE_VARIABLES), \
PAR("term_position", filler, READ_CLAUSE_TERM_POSITION), \
PAR("syntax_errors", isatom, READ_CLAUSE_SYNTAX_ERRORS), \
PAR(NULL, ok, READ_CLAUSE_END)
#define READ_CLAUSE_DEFS() \
PAR("comments", list_filler, READ_CLAUSE_COMMENTS) \
, PAR("module", isatom, READ_CLAUSE_MODULE), \
PAR("variable_names", filler, READ_CLAUSE_VARIABLE_NAMES), \
PAR("variables", filler, READ_CLAUSE_VARIABLES), \
PAR("term_position", filler, READ_CLAUSE_TERM_POSITION), \
PAR("syntax_errors", isatom, READ_CLAUSE_SYNTAX_ERRORS), \
PAR(NULL, ok, READ_CLAUSE_END)
#define PAR(x, y, z) z
@ -1009,7 +1032,7 @@ typedef enum read_clause_enum_choices {
#undef PAR
#define PAR(x, y, z) \
#define PAR(x, y, z) \
{ x, y, z }
static const param_t read_clause_defs[] = {READ_CLAUSE_DEFS()};
@ -1019,7 +1042,7 @@ static xarg *setClauseReadEnv(Term opts, FEnv *fe, struct renv *re,
int inp_stream) {
CACHE_REGS
xarg *args = Yap_ArgListToVector(opts, read_clause_defs, READ_CLAUSE_END);
xarg *args = Yap_ArgListToVector(opts, read_clause_defs, READ_CLAUSE_END);
if (args == NULL) {
if (LOCAL_Error_TYPE == DOMAIN_ERROR_GENERIC_ARGUMENT)
LOCAL_Error_TYPE = DOMAIN_ERROR_READ_OPTION;
@ -1077,11 +1100,11 @@ static xarg *setClauseReadEnv(Term opts, FEnv *fe, struct renv *re,
}
/**
* @pred read_clause( +_Stream_, -_Clause_, ?_Opts) is det
*
* @pred read_clause( +_Stream_, -_Clause_, ?_Opts) is det
*
u* Same as read_clause/3, but from the standard input stream.
*
*/
*
*/
static Int read_clause2(USES_REGS1) {
Term rc;
yhandle_t h = Yap_InitSlot(ARG1);
@ -1092,28 +1115,28 @@ static Int read_clause2(USES_REGS1) {
}
/**
* @pred read_clause( +_Stream_, -_Clause_, ?_Opts) is det
*
* This predicate receives a set of options _OPts_ based on read_term/3, but
*specific
* to readin clauses. The following options are considered:
*
* + The `comments` option unifies its argument with the comments in the term,
* represented as strings
* + The `process_comments` option calls a hook, it is current ignored by YAP.
* + The `term_position` unifies its argument with a term describing the
* position of the term.
* + The `syntax_errors` flag controls response to syntactic errors, the
*default is `dec10`.
*
* The next two options are called implicitly:
*
* + The `module` option is initialized to the current source module, by
*default.
* + The `singletons` option is set from the single var flag
*/
* @pred read_clause( +_Stream_, -_Clause_, ?_Opts) is det
*
* This predicate receives a set of options _OPts_ based on read_term/3, but
*specific
* to readin clauses. The following options are considered:
*
* + The `comments` option unifies its argument with the comments in the term,
* represented as strings
* + The `process_comments` option calls a hook, it is current ignored by YAP.
* + The `term_position` unifies its argument with a term describing the
* position of the term.
* + The `syntax_errors` flag controls response to syntactic errors, the
*default is `dec10`.
*
* The next two options are called implicitly:
*
* + The `module` option is initialized to the current source module, by
*default.
* + The `singletons` option is set from the single var flag
*/
static Int read_clause(
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
int inp_stream;
Term out;
Term t3 = Deref(ARG3);
@ -1141,36 +1164,36 @@ static Int read_clause(
}
/**
* @pred source_location( - _File_ , _Line_ )
*
* unify _File_ and _Line_ wuth the position of the last term read, if the term
* comes from a stream created by opening a file-system path with open/3 and
*friends.>position
* It ignores user_input or
* sockets.
*
* @param - _File_
* @param - _Line_
*
* @note SWI-Prolog built-in.
*/
* @pred source_location( - _File_ , _Line_ )
*
* unify _File_ and _Line_ wuth the position of the last term read, if the term
* comes from a stream created by opening a file-system path with open/3 and
*friends.>position
* It ignores user_input or
* sockets.
*
* @param - _File_
* @param - _Line_
*
* @note SWI-Prolog built-in.
*/
static Int source_location(USES_REGS1) {
return Yap_unify(ARG1, MkAtomTerm(LOCAL_SourceFileName)) &&
Yap_unify(ARG2, MkIntegerTerm(LOCAL_SourceFileLineno));
Yap_unify(ARG2, MkIntegerTerm(LOCAL_SourceFileLineno));
}
/**
* @pred read(+ _Stream_, - _Term_ ) is iso
*
* Reads term _T_ from the stream _S_ instead of from the current input
* stream.
*
* @param - _Stream_
* @param - _Term_
*
*/
* @pred read(+ _Stream_, - _Term_ ) is iso
*
* Reads term _T_ from the stream _S_ instead of from the current input
* stream.
*
* @param - _Stream_
* @param - _Term_
*
*/
static Int read2(
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
int inp_stream;
Int out;
@ -1186,24 +1209,24 @@ static Int read2(
/** @pred read(- _T_) is iso
Reads the next term from the current input stream, and unifies it with
_T_. The term must be followed by a dot (`.`) and any blank-character
as previously defined. The syntax of the term must match the current
declarations for operators (see op). If the end-of-stream is reached,
_T_ is unified with the atom `end_of_file`. Further reads from of
the same stream may cause an error failure (see open/3).
Reads the next term from the current input stream, and unifies it with
_T_. The term must be followed by a dot (`.`) and any blank-character
as previously defined. The syntax of the term must match the current
declarations for operators (see op). If the end-of-stream is reached,
_T_ is unified with the atom `end_of_file`. Further reads from of
the same stream may cause an error failure (see open/3).
*/
static Int read1(
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
Term out = Yap_read_term(LOCAL_c_input_stream, TermNil, 1);
return out && Yap_unify(ARG1, out);
}
/** @pred fileerrors
Switches on the file_errors flag so that in certain error conditions
Input/Output predicates will produce an appropriated message and abort.
Switches on the file_errors flag so that in certain error conditions
Input/Output predicates will produce an appropriated message and abort.
*/
static Int fileerrors(USES_REGS1) {
@ -1211,16 +1234,16 @@ static Int fileerrors(USES_REGS1) {
}
/**
@pred nofileerrors
@pred nofileerrors
Switches off the `file_errors` flag, so that the predicates see/1,
tell/1, open/3 and close/1 just fail, instead of producing
an error message and aborting whenever the specified file cannot be
opened or closed.
Switches off the `file_errors` flag, so that the predicates see/1,
tell/1, open/3 and close/1 just fail, instead of producing
an error message and aborting whenever the specified file cannot be
opened or closed.
*/
static Int nofileerrors(
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
USES_REGS1) { /* '$read2'(+Flag,?Term,?Module,?Vars,-Pos,-Err,+Stream) */
return setYapFlag(TermFileerrors, TermFalse);
}
@ -1271,7 +1294,7 @@ static Int style_checker(USES_REGS1) {
X_API Term Yap_StringToTerm(const char *s, size_t len, encoding_t *encp,
int prio, Term *bindings) {
CACHE_REGS
Term bvar = MkVarTerm(), ctl;
Term bvar = MkVarTerm(), ctl;
yhandle_t sl;
if (bindings) {
@ -1294,21 +1317,20 @@ X_API Term Yap_StringToTerm(const char *s, size_t len, encoding_t *encp,
return rval;
}
/**
* @pred read_term_from_atom( +_Atom_ , - _T_ , + _Options_
*
* read a term _T_ stored in constant _Atom_ according to _Options_
*
* @param _Atom_ the source _Atom_
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Originally from SWI-Prolog, in YAP only works with internalised atoms
* Check read_term_from_atomic/3 for the general version. Also, the built-in is
*supposed to
* use YAP's internal encoding, so please avoid the encoding/1 option.
*/
* @pred read_term_from_atom( +_Atom_ , - _T_ , + _Options_
*
* read a term _T_ stored in constant _Atom_ according to _Options_
*
* @param _Atom_ the source _Atom_
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Originally from SWI-Prolog, in YAP only works with internalised atoms
* Check read_term_from_atomic/3 for the general version. Also, the built-in is
*supposed to
* use YAP's internal encoding, so please avoid the encoding/1 option.
*/
static Int read_term_from_atom(USES_REGS1) {
Term t1 = Deref(ARG1), rc;
Atom at;
@ -1347,17 +1369,17 @@ Term Yap_AtomToTerm(Atom a, Term opts) {
}
/**
* @pred read_term_from_string( +_String_ , - _T_ , + _Options_
*
* read a term _T_ stored in constant _String_ according to _Options_
*
* @param _String_ the source _String_
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Idea from SWI-Prolog, in YAP only works with strings
* Check read_term_from_atomic/3 for the general version.
*/
* @pred read_term_from_string( +_String_ , - _T_ , + _Options_
*
* read a term _T_ stored in constant _String_ according to _Options_
*
* @param _String_ the source _String_
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Idea from SWI-Prolog, in YAP only works with strings
* Check read_term_from_atomic/3 for the general version.
*/
static Int read_term_from_string(USES_REGS1) {
Term t1 = Deref(ARG1), rc;
const unsigned char *s;
@ -1384,7 +1406,7 @@ static Int read_term_from_string(USES_REGS1) {
static Int string_to_term(USES_REGS1) {
Term t1 = Deref(ARG1), rc;
const char *s;
const char *s;
size_t len;
if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR, t1, "read_term_from_string/3");
@ -1397,8 +1419,7 @@ static Int string_to_term(USES_REGS1) {
len = strlen_utf8((const unsigned char *)s);
}
encoding_t enc = ENC_ISO_UTF8;
rc = Yap_StringToTerm(s, len, &enc,
1200, &ARG3);
rc = Yap_StringToTerm(s, len, &enc, 1200, &ARG3);
if (!rc)
return false;
return Yap_unify(rc, ARG2);
@ -1411,7 +1432,7 @@ static Int atomic_to_term(USES_REGS1) {
if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR, t1, "read_term_from_string/3");
return (FALSE);
} else if (!IsAtomicTerm(t1)) {
} else if (!IsAtomicTerm(t1)) {
Yap_Error(TYPE_ERROR_ATOMIC, t1, "read_term_from_atomic/3");
return (FALSE);
} else {
@ -1420,8 +1441,7 @@ static Int atomic_to_term(USES_REGS1) {
len = strlen_utf8((unsigned char *)s);
}
encoding_t enc = ENC_ISO_UTF8;
rc = Yap_StringToTerm(s, len, &enc,
1200, &ARG3);
rc = Yap_StringToTerm(s, len, &enc, 1200, &ARG3);
if (!rc)
return false;
return Yap_unify(rc, ARG2);
@ -1429,12 +1449,12 @@ static Int atomic_to_term(USES_REGS1) {
static Int atom_to_term(USES_REGS1) {
Term t1 = Deref(ARG1), rc;
const char *s;
const char *s;
size_t len;
if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR, t1, "read_term_from_string/3");
return (FALSE);
} else if (!IsAtomTerm(t1)) {
} else if (!IsAtomTerm(t1)) {
Yap_Error(TYPE_ERROR_ATOM, t1, "read_term_from_atomic/3");
return (FALSE);
} else {
@ -1443,27 +1463,26 @@ static Int atom_to_term(USES_REGS1) {
len = strlen_utf8((const unsigned char *)s);
}
encoding_t enc = ENC_ISO_UTF8;
rc = Yap_StringToTerm(s, len, &enc,
1200, &ARG3);
rc = Yap_StringToTerm(s, len, &enc, 1200, &ARG3);
if (!rc)
return false;
return Yap_unify(rc, ARG2);
}
/**
* @pred read_term_from_atomic( +_Atomic_ , - _T_ , + _Options_ )
*
* read a term _T_ stored in text _Atomic_ according to _Options_
*
* @param _Atomic_ the source may be an atom, string, list of codes, or list of
*chars.
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Idea originally from SWI-Prolog, but in YAP we separate atomic and
*atom.
* Encoding is fixed in atoms and strings.
*/
* @pred read_term_from_atomic( +_Atomic_ , - _T_ , + _Options_ )
*
* read a term _T_ stored in text _Atomic_ according to _Options_
*
* @param _Atomic_ the source may be an atom, string, list of codes, or list of
*chars.
* @param _T_ the output term _T_, may be any term
* @param _Options_ read_term/3 options.
*
* @notes Idea originally from SWI-Prolog, but in YAP we separate atomic and
*atom.
* Encoding is fixed in atoms and strings.
*/
static Int read_term_from_atomic(USES_REGS1) {
Term t1 = Deref(ARG1), rc;
const unsigned char *s;
@ -1479,11 +1498,11 @@ static Int read_term_from_atomic(USES_REGS1) {
s = UStringOfTerm(t);
len = strlen_utf8((unsigned char *)s);
}
char *ss = (char *)s;
char *ss = (char *)s;
encoding_t enc = ENC_ISO_UTF8;
int sno = Yap_open_buf_read_stream(ss, len, &enc, MEM_BUF_USER);
rc = Yap_read_term(sno, Deref(ARG3), 3);
Yap_CloseStream(sno);
rc = Yap_read_term(sno, Deref(ARG3), 3);
Yap_CloseStream(sno);
if (!rc)
return false;
return Yap_unify(rc, ARG2);
@ -1499,8 +1518,8 @@ void Yap_InitReadTPreds(void) {
Yap_InitCPred("read_term_from_atom", 3, read_term_from_atom, 0);
Yap_InitCPred("read_term_from_atomic", 3, read_term_from_atomic, 0);
Yap_InitCPred("read_term_from_string", 3, read_term_from_string, 0);
Yap_InitCPred("atom_to_term", 3, atom_to_term, 0);
Yap_InitCPred("atomic_to_term", 3, atomic_to_term, 0);
Yap_InitCPred("atom_to_term", 3, atom_to_term, 0);
Yap_InitCPred("atomic_to_term", 3, atomic_to_term, 0);
Yap_InitCPred("string_to_term", 3, string_to_term, 0);
Yap_InitCPred("fileerrors", 0, fileerrors, SyncPredFlag);

7
os/streams.c
View File

@ -248,11 +248,12 @@ has_reposition(int sno,
}
char *Yap_guessFileName(FILE *file, int sno, char *nameb, size_t max) {
size_t maxs = max(255, max);
if (!nameb) {
nameb = malloc(max(256, max));
nameb = malloc(maxs + 1);
}
if (!file) {
strcpy(nameb, "memory buffer");
strncpy(nameb, "memory buffer", maxs);
return nameb;
}
int f = fileno(file);
@ -275,7 +276,7 @@ char *Yap_guessFileName(FILE *file, int sno, char *nameb, size_t max) {
return NULL;
else {
int i;
unsigned char *ptr = nameb;
unsigned char *ptr = (unsigned char *)nameb;
for (i = 0; i < strlen(path); i++)
ptr += put_utf8(ptr, path[i]);
*ptr = '\0';

2
os/sysbits.c
View File

@ -1181,7 +1181,7 @@ const char *Yap_findFile(const char *isource, const char *idef,
YAP_file_type_t ftype, bool expand_root, bool in_lib) {
char *save_buffer = NULL;
const char *root, *source = isource;
const char *root = iroot, *source = isource;
int rc = FAIL_RESTORE;
int try
= 0;