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migrated index_or_rindex() to fnc.c and exported some functions to shared by index(), str::index(), str::rindex()

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hyung-hwan
2014-05-28 08:40:51 +00:00
parent 9ec0981157
commit 7774a8a8fe
3 changed files with 96 additions and 92 deletions
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94
qse/lib/awk/fnc.c
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@ -22,7 +22,6 @@
static int fnc_close (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi);
static int fnc_fflush (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi);
static int fnc_index (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi);
static int fnc_sin (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi);
static int fnc_cos (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi);
@ -57,7 +56,7 @@ static qse_awk_fnc_t sysfnctab[] =
{ {QSE_T("fflush"), 6}, 0, { {0, 1, QSE_NULL}, fnc_fflush, QSE_AWK_RIO }, QSE_NULL},
/* string functions */
{ {QSE_T("index"), 5}, 0, { {2, 3, QSE_NULL}, fnc_index, 0 }, QSE_NULL},
{ {QSE_T("index"), 5}, 0, { {2, 3, QSE_NULL}, qse_awk_fnc_index, 0 }, QSE_NULL},
{ {QSE_T("substr"), 6}, 0, { {2, 3, QSE_NULL}, qse_awk_fnc_substr, 0 }, QSE_NULL},
{ {QSE_T("length"), 6}, 1, { {0, 1, QSE_NULL}, qse_awk_fnc_length, 0 }, QSE_NULL},
{ {QSE_T("split"), 5}, 0, { {2, 3, QSE_T("vrx")}, qse_awk_fnc_split, 0 }, QSE_NULL},
@ -405,8 +404,90 @@ static int fnc_fflush (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
return 0;
}
static int fnc_index (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
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_awk_int_t idx, boundary = 1;
nargs = qse_awk_rtx_getnargs (rtx);
a0 = qse_awk_rtx_getarg (rtx, 0);
a1 = qse_awk_rtx_getarg (rtx, 1);
/*
index ("abc", "d", 3);
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_valtoint (rtx, a2, &boundary);
if (n <= -1) return -1;
}
str0 = qse_awk_rtx_getvalstr (rtx, a0, &len0);
if (str0 == QSE_NULL) return -1;
str1 = qse_awk_rtx_getvalstr (rtx, a1, &len1);
if (str1 == QSE_NULL)
{
if (a0->type != QSE_AWK_VAL_STR)
qse_awk_rtx_freevalstr (rtx, a0, 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 (boundary > len0 || boundary <= 0)
{
ptr = QSE_NULL;
}
else if (rindex)
{
/* 'boundary' acts as an end position */
ptr = rtx->gbl.ignorecase?
qse_strxnrcasestr (&str0[0], boundary, str1, len1):
qse_strxnrstr (&str0[0], boundary, str1, len1);
}
else
{
/* 'boundary' acts as an start position */
ptr = rtx->gbl.ignorecase?
qse_strxncasestr (&str0[boundary-1], len0-boundary+1, str1, len1):
qse_strxnstr (&str0[boundary-1], len0-boundary+1, str1, len1);
}
idx = (ptr == QSE_NULL)? 0: ((qse_awk_int_t)(ptr-str0) + 1);
qse_awk_rtx_freevalstr (rtx, a1, str1);
qse_awk_rtx_freevalstr (rtx, a0, str0);
a0 = qse_awk_rtx_makeintval (rtx, idx);
if (a0 == QSE_NULL) return -1;
qse_awk_rtx_setretval (rtx, a0);
return 0;
}
int qse_awk_fnc_index (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
{
/*
qse_size_t nargs;
qse_awk_val_t* a0, * a1, * v;
qse_char_t* str0, * str1, * ptr;
@ -457,6 +538,13 @@ static int fnc_index (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
qse_awk_rtx_setretval (rtx, v);
return 0;
*/
return index_or_rindex (rtx, 0);
}
int qse_awk_fnc_rindex (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)
{
return index_or_rindex (rtx, 1);
}
int qse_awk_fnc_length (qse_awk_rtx_t* rtx, const qse_awk_fnc_info_t* fi)