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amended the reference handling in Awk.cpp.

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added str::index() and str::rindex().
enhanded qse_awk_rtx_valtobool().
removed QSE_AWK_NCMPONSTR from QSE_AWK_CLASSIC.
added QSE_AWK_NCMPONSTR to QSE_AWK_MODERN.
This commit is contained in:
hyung-hwan 2013-04-16 15:30:37 +00:00
parent 23d316a659
commit 3d813a1bf1
6 changed files with 190 additions and 54 deletions
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9
qse/include/qse/awk/awk.h
View File

@ -234,8 +234,9 @@ struct qse_awk_val_ref_t
QSE_AWK_VAL_REF_POS /**< positional variable */
} id;
/* if id is QSE_AWK_VAL_REF_POS, adr holds an index of the
* positional variable. Otherwise, adr points to the value
/* if id is QSE_AWK_VAL_REF_POS, adr holds the index of a
* positional variable. If id is QSE_AWK_VAL_REF_GBL, adr hold
* the index of a global variable. Otherwise, adr points to the value
* directly. */
qse_awk_val_t** adr;
};
@ -1124,11 +1125,11 @@ enum qse_awk_trait_t
QSE_AWK_CLASSIC =
QSE_AWK_IMPLICIT | QSE_AWK_RIO |
QSE_AWK_NEWLINE | QSE_AWK_BLANKCONCAT | QSE_AWK_PABLOCK |
QSE_AWK_STRIPSTRSPC | QSE_AWK_NCMPONSTR | QSE_AWK_STRICTNAMING,
QSE_AWK_STRIPSTRSPC | QSE_AWK_STRICTNAMING,
QSE_AWK_MODERN =
QSE_AWK_CLASSIC | QSE_AWK_FLEXMAP |
QSE_AWK_RWPIPE | QSE_AWK_TOLERANT | QSE_AWK_NEXTOFILE
QSE_AWK_RWPIPE | QSE_AWK_TOLERANT | QSE_AWK_NEXTOFILE | QSE_AWK_NCMPONSTR
};
typedef enum qse_awk_trait_t qse_awk_trait_t;

50
qse/lib/awk/Awk.cpp
View File

@ -1392,30 +1392,42 @@ int Awk::dispatch_function (Run* run, const fnc_info_t* fi)
{
qse_awk_val_ref_t* ref = (qse_awk_val_ref_t*)v;
if (ref->id == qse_awk_val_ref_t::QSE_AWK_VAL_REF_POS)
switch (ref->id)
{
qse_size_t idx = (qse_size_t)ref->adr;
case qse_awk_val_ref_t::QSE_AWK_VAL_REF_POS:
{
qse_size_t idx = (qse_size_t)ref->adr;
if (idx == 0)
{
xx = args[i].setStr (run,
QSE_STR_PTR(&run->rtx->inrec.line),
QSE_STR_LEN(&run->rtx->inrec.line));
if (idx == 0)
{
xx = args[i].setStr (run,
QSE_STR_PTR(&run->rtx->inrec.line),
QSE_STR_LEN(&run->rtx->inrec.line));
}
else if (idx <= run->rtx->inrec.nflds)
{
xx = args[i].setStr (run,
run->rtx->inrec.flds[idx-1].ptr,
run->rtx->inrec.flds[idx-1].len);
}
else
{
xx = args[i].setStr (run, QSE_T(""), 0);
}
break;
}
else if (idx <= run->rtx->inrec.nflds)
case qse_awk_val_ref_t::QSE_AWK_VAL_REF_GBL:
{
xx = args[i].setStr (run,
run->rtx->inrec.flds[idx-1].ptr,
run->rtx->inrec.flds[idx-1].len);
qse_size_t idx = (qse_size_t)ref->adr;
qse_awk_val_t* val = (qse_awk_val_t*)RTX_STACK_GBL (run->rtx, idx);
xx = args[i].setVal (run, val);
break;
}
else
{
xx = args[i].setStr (run, QSE_T(""), 0);
}
}
else
{
xx = args[i].setVal (run, *(ref->adr));
default:
xx = args[i].setVal (run, *(ref->adr));
break;
}
has_ref_arg = true;
}

110
qse/lib/awk/mod-str.c
View File

@ -76,6 +76,106 @@ static int fnc_rtrim (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
return trim (rtx, QSE_STRTRMX_RIGHT);
}
static int index_or_rindex (qse_awk_rtx_t* rtx, int rindex)
{
/* this is similar to the built-in index() function but doesn't
* care about IGNORECASE. */
qse_size_t nargs;
qse_awk_val_t* a0, * a1;
qse_char_t* str0, * str1, * ptr;
qse_size_t len0, len1;
qse_long_t idx, boundary = 1;
nargs = qse_awk_rtx_getnargs (rtx);
a0 = qse_awk_rtx_getarg (rtx, 0);
a1 = qse_awk_rtx_getarg (rtx, 1);
/*
str::index ("abc", "d", 3);
str::rindex ("abcdefabcdx", "cd", 8);
*/
if (nargs >= 3)
{
qse_awk_val_t* a2;
int n;
a2 = qse_awk_rtx_getarg (rtx, 2);
n = qse_awk_rtx_valtolong (rtx, a2, &boundary);
if (n <= -1) return -1;
}
if (a0->type == QSE_AWK_VAL_STR)
{
str0 = ((qse_awk_val_str_t*)a0)->val.ptr;
len0 = ((qse_awk_val_str_t*)a0)->val.len;
}
else
{
str0 = qse_awk_rtx_valtostrdup (rtx, a0, &len0);
if (str0 == QSE_NULL) return -1;
}
if (a1->type == QSE_AWK_VAL_STR)
{
str1 = ((qse_awk_val_str_t*)a1)->val.ptr;
len1 = ((qse_awk_val_str_t*)a1)->val.len;
}
else
{
str1 = qse_awk_rtx_valtostrdup (rtx, a1, &len1);
if (str1 == QSE_NULL)
{
if (a0->type != QSE_AWK_VAL_STR)
qse_awk_rtx_freemem (rtx, str0);
return -1;
}
}
if (nargs < 3)
{
boundary = rindex? len0: 1;
}
else
{
if (boundary == 0) boundary = 1;
else if (boundary < 0) boundary = len0 + boundary + 1;
}
if (rindex)
{
/* 'boundary' acts as an end position */
ptr = (boundary > len0 || boundary <= 0)?
QSE_NULL: qse_strxnrstr (&str0[0], boundary, str1, len1);
}
else
{
/* 'boundary' acts as a start position */
ptr = (boundary > len0 || boundary <= 0)?
QSE_NULL: qse_strxnstr (&str0[boundary-1], len0-boundary+1, str1, len1);
}
idx = (ptr == QSE_NULL)? 0: ((qse_long_t)(ptr-str0) + 1);
if (a0->type != QSE_AWK_VAL_STR) qse_awk_rtx_freemem (rtx, str0);
if (a1->type != QSE_AWK_VAL_STR) qse_awk_rtx_freemem (rtx, str1);
a0 = qse_awk_rtx_makeintval (rtx, idx);
if (a0 == QSE_NULL) return -1;
qse_awk_rtx_setretval (rtx, a0);
return 0;
}
static int fnc_index (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
{
return index_or_rindex (rtx, 0);
}
static int fnc_rindex (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
{
return index_or_rindex (rtx, 1);
}
typedef struct fnctab_t fnctab_t;
struct fnctab_t
{
@ -86,10 +186,12 @@ struct fnctab_t
static fnctab_t fnctab[] =
{
/* keep this table sorted for binary search in query(). */
{ QSE_T("ltrim"), { { 1, 1, QSE_NULL }, fnc_ltrim, 0 } },
{ QSE_T("normspace"), { { 1, 1, QSE_NULL }, fnc_normspace, 0 } },
{ QSE_T("rtrim"), { { 1, 1, QSE_NULL }, fnc_rtrim, 0 } },
{ QSE_T("trim"), { { 1, 1, QSE_NULL }, fnc_trim, 0 } }
{ QSE_T("index"), { { 2, 3, QSE_NULL }, fnc_index, 0 } },
{ QSE_T("ltrim"), { { 1, 1, QSE_NULL }, fnc_ltrim, 0 } },
{ QSE_T("normspace"), { { 1, 1, QSE_NULL }, fnc_normspace, 0 } },
{ QSE_T("rindex"), { { 2, 3, QSE_NULL }, fnc_rindex, 0 } },
{ QSE_T("rtrim"), { { 1, 1, QSE_NULL }, fnc_rtrim, 0 } },
{ QSE_T("trim"), { { 1, 1, QSE_NULL }, fnc_trim, 0 } }
};
static int query (qse_awk_mod_t* mod, qse_awk_t* awk, const qse_char_t* name, qse_awk_mod_sym_t* sym)

60
qse/lib/awk/val.c
View File

@ -913,37 +913,47 @@ void qse_awk_rtx_freevalchunk (qse_awk_rtx_t* rtx, qse_awk_val_chunk_t* chunk)
static int val_ref_to_bool (
qse_awk_rtx_t* rtx, const qse_awk_val_ref_t* ref)
{
if (ref->id == QSE_AWK_VAL_REF_POS)
switch (ref->id)
{
qse_size_t idx;
case QSE_AWK_VAL_REF_POS:
{
qse_size_t idx;
idx = (qse_size_t)ref->adr;
if (idx == 0)
{
return QSE_STR_LEN(&rtx->inrec.line) > 0;
idx = (qse_size_t)ref->adr;
if (idx == 0)
{
return QSE_STR_LEN(&rtx->inrec.line) > 0;
}
else if (idx <= rtx->inrec.nflds)
{
return rtx->inrec.flds[idx-1].len > 0;
}
else
{
/* the index is greater than the number of records.
* it's an empty string. so false */
return 0;
}
}
else if (idx <= rtx->inrec.nflds)
case QSE_AWK_VAL_REF_GBL:
{
return rtx->inrec.flds[idx-1].len > 0;
qse_size_t idx;
idx = (qse_size_t)ref->adr;
return qse_awk_rtx_valtobool (rtx, RTX_STACK_GBL (rtx, idx));
}
else
{
/* the index is greater than the number of records.
* it's an empty string. so false */
return 0;
}
}
else
{
qse_awk_val_t** xref = (qse_awk_val_t**)ref->adr;
/* A reference value is not able to point to another
* refernce value for the way values are represented
* in QSEAWK */
QSE_ASSERT ((*xref)->type != QSE_AWK_VAL_REF);
default:
{
qse_awk_val_t** xref = (qse_awk_val_t**)ref->adr;
/* make a recursive call back to the caller */
return qse_awk_rtx_valtobool (rtx, *xref);
/* A reference value is not able to point to another
* refernce value for the way values are represented
* in QSEAWK */
QSE_ASSERT ((*xref)->type != QSE_AWK_VAL_REF);
/* make a recursive call back to the caller */
return qse_awk_rtx_valtobool (rtx, *xref);
}
}
}
@ -1680,7 +1690,7 @@ qse_long_t qse_awk_rtx_hashval (qse_awk_rtx_t* rtx, qse_awk_val_t* v)
int qse_awk_rtx_setrefval (qse_awk_rtx_t* rtx, qse_awk_val_ref_t* ref, qse_awk_val_t* val)
{
if (val->type == QSE_AWK_VAL_REX)
if (val->type == QSE_AWK_VAL_REX || val->type == QSE_AWK_VAL_REF)
{
/* though it is possible that an intrinsic function handler
* can accept a regular expression withtout evaluation when 'x'

8
qse/regress/awk/cou-019.awk
View File

@ -1 +1,7 @@
FNR == 1, FNR == 5 { print FILENAME ": " $0; }
function basename (str) {
ridx = str::rindex (str, "/");
if (ridx == 0) return str;
else return substr (str, ridx + 1);
}
FNR == 1, FNR == 5 { print basename(FILENAME) ": " $0; }

7
qse/regress/awk/cou-020.awk
View File

@ -1 +1,6 @@
FNR <= 5 { print FILENAME ": " $0; }
function basename (str) {
ridx = str::rindex (str, "/");
if (ridx == 0) return str;
else return substr (str, ridx + 1);
}
FNR <= 5 { print basename(FILENAME) ": " $0; }