grn_rc
grn_query_search(grn_ctx *ctx, grn_ii *i, grn_query *q, grn_hash *r, grn_operator op)
{
int p = q->escalation_threshold;
// dump_query(q, q->expr, 0);
// grn_log("escalation_threshold=%d", p);
if (p >= 0 || (-p & 1)) {
q->default_mode = GRN_OP_EXACT;
exec_search(ctx, i, q, q->expr, r, op);
GRN_LOG(ctx, GRN_LOG_INFO, "hits(exact)=%d", *r->n_entries);
}
if ((p >= 0) ? (p >= *r->n_entries) : (-p & 2)) {
q->weight_offset -= q->escalation_decaystep;
q->default_mode = GRN_OP_UNSPLIT;
exec_search(ctx, i, q, q->expr, r, op);
GRN_LOG(ctx, GRN_LOG_INFO, "hits(unsplit)=%d", *r->n_entries);
}
if ((p >= 0) ? (p >= *r->n_entries) : (-p & 4)) {
q->weight_offset -= q->escalation_decaystep;
q->default_mode = GRN_OP_PARTIAL;
exec_search(ctx, i, q, q->expr, r, op);
GRN_LOG(ctx, GRN_LOG_INFO, "hits(partial)=%d", *r->n_entries);
}
return GRN_SUCCESS;
}
static void exec_cmd(Pcs pcs, struct params *params)
{
switch (params->action)
{
case ACTION_QUOTA:
break;
case ACTION_META: /*获取元数据*/
exec_meta(pcs, params);
break;
case ACTION_LIST: /* 列出目录 */
exec_list(pcs, params);
break;
case ACTION_RENAME: /* 重命名文件或目录 */
exec_rename(pcs, params);
break;
case ACTION_MOVE: /* 移动文件或目录 */
exec_move(pcs, params);
break;
case ACTION_COPY: /* 复制文件或目录 */
exec_copy(pcs, params);
break;
case ACTION_MKDIR: /* 创建目录 */
exec_mkdir(pcs, params);
break;
case ACTION_DELETE: /* 删除文件或目录 */
exec_delete(pcs, params);
break;
case ACTION_CAT: /* 直接显示网盘中文本文件的内容 */
exec_cat(pcs, params);
break;
case ACTION_ECHO: /* 直接把文本保存到网盘文件中 */
exec_echo(pcs, params);
break;
case ACTION_SEARCH: /* 搜索网盘文件 */
exec_search(pcs, params);
break;
case ACTION_DOWNLOAD: /* 下载网盘文件或目录 */
exec_download(pcs, params);
break;
case ACTION_UPLOAD: /* 上传文件或目录到网盘中 */
exec_upload(pcs, params);
break;
default:
printf("Unknown command, use `--help` to view help.\n");
break;
}
}
/* hashed command search routine
* ----------------------------------------------------------------------- */
union command exec_hash(char *name, enum hash_id *idptr) {
enum hash_id id;
union command cmd;
/* name contains slashes, its a path */
if(name[str_chr(name, '/')]) {
/* do not hash this... */
id = H_PROGRAM;
cmd.path = name;
/* ...but validate the path */
if(access(cmd.path, X_OK) != 0)
cmd.path = NULL;
}
/* otherwise try to find hashed entry */
else {
struct exechash *entry;
unsigned long hash;
/* hash the name for possible re-use on exechash_create() */
hash = exec_hashstr(name);
/* do we have a cache hit? */
if((entry = exec_search(name, hash))) {
entry->hits++;
id = entry->id;
cmd = entry->cmd;
}
/* if we don't have a cache hit we're gonna search, special builtins first */
else {
id = H_EXEC;
cmd.builtin = builtin_search(name, B_EXEC);
/* then search for functions */
if(cmd.builtin == NULL) {
id = H_SBUILTIN;
cmd.builtin = builtin_search(name, B_SPECIAL);
}
/* then search for functions */
if(cmd.builtin == NULL) {
id = H_FUNCTION;
cmd.fn = /* FIXME */ NULL;
}
/* then search for normal builtins */
if(cmd.fn == NULL) {
id = H_BUILTIN;
cmd.builtin = builtin_search(name, B_DEFAULT);
}
/* then search for external commands */
if(cmd.builtin == NULL) {
id = H_PROGRAM;
cmd.path = exec_path(name);
}
/* if we found something then create a new cache entry */
if(cmd.ptr) {
entry = exec_create(name, hash);
entry->hits++;
entry->id = id;
entry->cmd = cmd;
}
}
}
/* we have a command, set the id */
if(cmd.ptr && idptr)
*idptr = id;
return cmd;
}
static void
exec_search(grn_ctx *ctx, grn_ii *i, grn_query *q, grn_cell *c,
grn_hash *r, grn_operator op)
{
grn_hash *s;
grn_cell *e, *ope = NIL;
int n = *r->n_entries;
grn_operator op0 = GRN_OP_OR, *opp = &op0, op1 = q->default_op;
if (!n && op != GRN_OP_OR) { return; }
if (n) {
s = grn_hash_create(ctx, NULL, r->key_size, r->value_size, r->obj.header.flags);
s->obj.header.impl_flags = 0;
s->obj.header.domain = r->obj.header.domain;
s->obj.range = r->obj.range;
s->obj.max_n_subrecs = r->obj.max_n_subrecs;
s->obj.subrec_size = r->obj.subrec_size;
s->obj.subrec_offset = r->obj.subrec_offset;
s->obj.id = r->obj.id;
s->obj.db = r->obj.db;
s->obj.source = r->obj.source;
s->obj.source_size = r->obj.source_size;
/*
grn_hook_entry entry;
for (entry = 0; entry < N_HOOK_ENTRIES; entry++) {
s->obj.hooks[entry] = NULL;
}
*/
} else {
s = r;
}
while (c != NIL) {
POP(e, c);
switch (e->header.type) {
case GRN_CELL_OP :
if (opp == &op0 && e->u.op.op == GRN_OP_BUT) {
POP(e, c);
} else {
ope = e;
op1 = ope->u.op.op;
}
continue;
case GRN_CELL_STR :
if (ope != NIL) {
q->opt.mode = ope->u.op.mode == -1 ? q->default_mode : ope->u.op.mode;
q->opt.max_interval = q->opt.similarity_threshold = ope->u.op.option;
if (!q->opt.weight_vector) {
q->opt.vector_size = ope->u.op.weight + q->weight_offset;
}
if (ope->u.op.mode == GRN_OP_SIMILAR) {
q->opt.max_interval = q->default_mode;
}
} else {
q->opt.mode = q->default_mode;
q->opt.max_interval = DEFAULT_MAX_INTERVAL;
q->opt.similarity_threshold = DEFAULT_SIMILARITY_THRESHOLD;
if (!q->opt.weight_vector) {
q->opt.vector_size = DEFAULT_WEIGHT + q->weight_offset;
}
}
if (grn_ii_select(ctx, i, e->u.b.value, e->u.b.size, s, *opp, &q->opt)) {
GRN_LOG(ctx, GRN_LOG_ERROR, "grn_inv_select on exec_search failed !");
return;
}
break;
case GRN_CELL_LIST :
exec_search(ctx, i, q, e, s, *opp);
break;
default :
GRN_LOG(ctx, GRN_LOG_NOTICE, "invalid object assigned in query (%d)", e->header.type);
break;
}
opp = &op1;
ope = NIL;
op1 = q->default_op;
}
if (n) {
grn_table_setoperation(ctx, (grn_obj *)r, (grn_obj *)s, (grn_obj *)r, op);
grn_hash_close(ctx, s);
}
}