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/*
Copyright (C) 2015 Brazil
Copyright (C) 2022 Sutou Kouhei <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include "grn.h"
#include "grn_db.h"
#include "grn_ctx_impl.h"
struct _grn_command_input {
grn_obj *command;
grn_hash *arguments;
};
grn_command_input *
grn_command_input_open(grn_ctx *ctx, grn_obj *command)
{
grn_command_input *input = NULL;
GRN_API_ENTER;
input = GRN_CALLOC(sizeof(grn_command_input));
if (!input) {
ERR(GRN_NO_MEMORY_AVAILABLE,
"[command-input] failed to allocate grn_command_input");
goto exit;
}
input->command = command;
/* TODO: Allocate by self. */
{
uint32_t n;
input->arguments = grn_expr_get_vars(ctx, input->command, &n);
}
exit :
GRN_API_RETURN(input);
}
grn_rc
grn_command_input_close(grn_ctx *ctx, grn_command_input *input)
{
GRN_API_ENTER;
/* TODO: Free input->arguments by self. */
/* grn_expr_clear_vars(ctx, input->command); */
GRN_FREE(input);
GRN_API_RETURN(ctx->rc);
}
grn_obj *
grn_command_input_add(grn_ctx *ctx,
grn_command_input *input,
const char *name,
int name_size,
bool *added)
{
grn_obj *argument = NULL;
/* TODO: Use bool */
int internal_added = false;
GRN_API_ENTER;
uint32_t real_name_size;
if (name_size == -1) {
real_name_size = (uint32_t)strlen(name);
} else {
real_name_size = (uint32_t)name_size;
}
if (input->arguments) {
grn_hash_add(ctx, input->arguments, name, real_name_size, (void **)&argument,
&internal_added);
if (internal_added) {
GRN_TEXT_INIT(argument, 0);
}
}
if (added) {
*added = internal_added;
}
GRN_API_RETURN(argument);
}
grn_obj *
grn_command_input_get(grn_ctx *ctx,
grn_command_input *input,
const char *name,
int name_size)
{
grn_obj *argument = NULL;
GRN_API_ENTER;
uint32_t real_name_size;
if (name_size == -1) {
real_name_size = (uint32_t)strlen(name);
} else {
real_name_size = (uint32_t)name_size;
}
if (input->arguments) {
grn_hash_get(ctx,
input->arguments,
name,
real_name_size,
(void **)&argument);
}
GRN_API_RETURN(argument);
}
grn_obj *
grn_command_input_at(grn_ctx *ctx,
grn_command_input *input,
unsigned int offset)
{
grn_obj *argument = NULL;
GRN_API_ENTER;
if (input->arguments) {
argument = (grn_obj *)grn_hash_get_value_(ctx, input->arguments,
offset + 1, NULL);
}
GRN_API_RETURN(argument);
}
grn_obj *
grn_command_input_get_arguments(grn_ctx *ctx,
grn_command_input *input)
{
GRN_API_ENTER;
GRN_API_RETURN((grn_obj *)(input->arguments));
}
grn_rc
grn_command_register(grn_ctx *ctx,
const char *command_name,
int command_name_size,
grn_command_run_func *run,
grn_expr_var *vars,
unsigned int n_vars,
void *user_data)
{
GRN_API_ENTER;
if (command_name_size == -1) {
command_name_size = (int)strlen(command_name);
}
{
grn_obj *command_object;
command_object = grn_proc_create(ctx,
command_name,
command_name_size,
GRN_PROC_COMMAND,
NULL, NULL, NULL, n_vars, vars);
if (!command_object) {
GRN_PLUGIN_ERROR(ctx, GRN_COMMAND_ERROR,
"[command][%.*s] failed to grn_proc_create()",
command_name_size, command_name);
GRN_API_RETURN(ctx->rc);
}
{
grn_proc *command = (grn_proc *)command_object;
command->callbacks.command.run = run;
command->user_data = user_data;
}
}
GRN_API_RETURN(GRN_SUCCESS);
}
grn_rc
grn_command_run(grn_ctx *ctx,
grn_obj *command,
grn_command_input *input)
{
grn_proc *proc;
GRN_API_ENTER;
proc = (grn_proc *)command;
if (proc->callbacks.command.run) {
proc->callbacks.command.run(ctx, command, input, proc->user_data);
} else {
/* TODO: REMOVE ME. For backward compatibility. */
uint32_t stack_curr = ctx->impl->stack_curr;
grn_proc_call(ctx, command, 0, command);
if (ctx->impl->stack_curr > stack_curr) {
grn_ctx_pop(ctx);
}
}
GRN_API_RETURN(ctx->rc);
}
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