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added qse_xli_findpairatindex()

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hyung-hwan 2019-06-14 09:05:12 +00:00
parent 1fd7626b2e
commit f26ce3bf40
1 changed files with 24 additions and 68 deletions
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90
qse/lib/xli/xli.c
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@ -655,8 +655,7 @@ qse_xli_list_t* qse_xli_yieldroot (qse_xli_t* xli)
/* ------------------------------------------------------ */ /* ------------------------------------------------------ */
static qse_size_t count_pairs_by_key ( static qse_size_t count_pairs_by_key (qse_xli_t* xli, const qse_xli_list_t* list, const qse_cstr_t* key)
qse_xli_t* xli, const qse_xli_list_t* list, const qse_cstr_t* key)
{ {
qse_xli_atom_t* p; qse_xli_atom_t* p;
qse_size_t count = 0; qse_size_t count = 0;
@ -677,9 +676,7 @@ static qse_size_t count_pairs_by_key (
return count; return count;
} }
static qse_xli_pair_t* find_pair_by_key_and_alias ( static qse_xli_pair_t* find_pair_by_key_and_alias (qse_xli_t* xli, const qse_xli_list_t* list, const qse_cstr_t* key, const qse_cstr_t* alias)
qse_xli_t* xli, const qse_xli_list_t* list,
const qse_cstr_t* key, const qse_cstr_t* alias)
{ {
qse_xli_atom_t* p; qse_xli_atom_t* p;
@ -703,9 +700,7 @@ static qse_xli_pair_t* find_pair_by_key_and_alias (
return QSE_NULL; return QSE_NULL;
} }
static qse_xli_pair_t* find_pair_by_key_and_index ( static qse_xli_pair_t* find_pair_by_key_and_index (qse_xli_t* xli, const qse_xli_list_t* list, const qse_cstr_t* key, qse_size_t index)
qse_xli_t* xli, const qse_xli_list_t* list,
const qse_cstr_t* key, qse_size_t index)
{ {
qse_xli_atom_t* p; qse_xli_atom_t* p;
qse_size_t count = 0; qse_size_t count = 0;
@ -824,7 +819,7 @@ inval:
return QSE_NULL; return QSE_NULL;
} }
qse_xli_pair_t* qse_xli_findpair (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn) static qse_xli_pair_t* __find_pair (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn, qse_xli_list_t** owning_list, qse_cstr_t* last_key_seg)
{ {
const qse_char_t* ptr; const qse_char_t* ptr;
const qse_xli_list_t* curlist; const qse_xli_list_t* curlist;
@ -865,7 +860,12 @@ qse_xli_pair_t* qse_xli_findpair (qse_xli_t* xli, const qse_xli_list_t* list, co
} }
if (pair == QSE_NULL) goto noent; if (pair == QSE_NULL) goto noent;
if (*ptr == QSE_T('\0')) return pair; /* no more segments */ if (*ptr == QSE_T('\0'))
{
if (last_key_seg) *last_key_seg = seg.key;
if (owning_list) *owning_list = curlist;
return pair; /* no more segments */
}
/* more segments to handle */ /* more segments to handle */
QSE_ASSERT (*ptr == xli->opt.key_splitter); QSE_ASSERT (*ptr == xli->opt.key_splitter);
@ -886,68 +886,24 @@ noent:
return QSE_NULL; return QSE_NULL;
} }
#include <qse/si/sio.h> qse_xli_pair_t* qse_xli_findpair (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn)
{
return __find_pair(xli, list, fqpn, QSE_NULL, QSE_NULL);
}
qse_xli_pair_t* qse_xli_findpairatindex (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn, qse_size_t idx) qse_xli_pair_t* qse_xli_findpairatindex (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn, qse_size_t idx)
{ {
const qse_char_t* ptr; qse_xli_list_t* owning_list;
const qse_xli_list_t* curlist; qse_cstr_t last_key_seg;
fqpn_seg_t seg;
curlist = list? list: &xli->root->list;
ptr = fqpn;
while (1)
{
qse_xli_pair_t* pair; qse_xli_pair_t* pair;
ptr = get_next_fqpn_segment(xli, ptr, &seg); /* find a pair with the given fully qualified name. the last segment is not supposed to contain an index. */
if (ptr == QSE_NULL) return QSE_NULL; pair = __find_pair(xli, list, fqpn, &owning_list, &last_key_seg);
if (!pair) return QSE_NULL;
if (curlist->type != QSE_XLI_LIST) /* use the given index to look for a value at specific position */
{ if (idx > 0) pair = find_pair_by_key_and_index(xli, owning_list, &last_key_seg, idx);
/* check the type of curlist. this check is needed return pair;
* because of the unconditional switching at the bottom of the
* this loop. this implementation strategy has been chosen
* to provide the segment name easily when setting the error. */
goto noent;
}
qse_printf (QSE_T(">>>> key [%js]\n"), seg.key);
switch (seg.idxtype)
{
case FQPN_SEG_IDX_NONE:
pair = find_pair_by_key_and_alias(xli, curlist, &seg.key, QSE_NULL);
break;
case FQPN_SEG_IDX_NUMBER:
pair = find_pair_by_key_and_index(xli, curlist, &seg.key, seg.idx.number);
break;
default: /*case FQPN_SEG_IDX_ALIAS:*/
pair = find_pair_by_key_and_alias(xli, curlist, &seg.key, &seg.idx.alias);
break;
}
if (pair == QSE_NULL) goto noent;
if (*ptr == QSE_T('\0')) return pair; /* no more segments */
/* more segments to handle */
QSE_ASSERT (*ptr == xli->opt.key_splitter);
ptr++; /* skip . */
/* switch to the value regardless of its type.
* check if it is a list in the beginning of the loop
* just after having gotten the next segment alias */
curlist = (qse_xli_list_t*)pair->val;
}
/* this part must never be reached */
qse_xli_seterrnum (xli, QSE_XLI_EINTERN, QSE_NULL);
return QSE_NULL;
noent:
qse_xli_seterrnum (xli, QSE_XLI_ENOENT, &seg.ki);
return QSE_NULL;
} }
qse_xli_pair_t* qse_xli_setpairwithstr (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn, const qse_cstr_t* value, const qse_char_t* strtag) qse_xli_pair_t* qse_xli_setpairwithstr (qse_xli_t* xli, const qse_xli_list_t* list, const qse_char_t* fqpn, const qse_cstr_t* value, const qse_char_t* strtag)