/* vifm
* Copyright (C) 2012 xaizek.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "functions.h"
#include <stddef.h> /* NULL size_t */
#include <stdio.h> /* snprintf() */
#include <stdlib.h> /* free() */
#include <string.h> /* memset() strcmp() strlen() */
#include "../compat/reallocarray.h"
#include "../utils/str.h"
#include "completion.h"
#include "text_buffer.h"
#include "var.h"
static int add_function(const function_t *func_info);
static function_t * find_function(const char func_name[]);
/* Number of registered functions. */
static size_t function_count;
/* List of registered functions. */
static function_t *functions;
int
function_register(const function_t *func_info)
{
if(function_registered(func_info->name))
{
return 1;
}
if(add_function(func_info) != 0)
{
return 1;
}
return 0;
}
int
function_registered(const char func_name[])
{
return find_function(func_name) != NULL;
}
/* Adds function to the list of functions. Returns non-zero on error. */
static int
add_function(const function_t *func_info)
{
function_t *ptr;
if(func_info->args.min > func_info->args.max)
{
return 1;
}
ptr = reallocarray(functions, function_count + 1, sizeof(function_t));
if(ptr == NULL)
{
return 1;
}
functions = ptr;
functions[function_count++] = *func_info;
return 0;
}
var_t
function_call(const char func_name[], const call_info_t *call_info)
{
function_t *function = find_function(func_name);
if(function == NULL)
{
vle_tb_append_linef(vle_err, "%s: %s", "Unknown function", func_name);
return var_error();
}
if(call_info->argc < function->args.min)
{
vle_tb_append_linef(vle_err, "%s: %s", "Not enough arguments for function",
func_name);
return var_error();
}
if(call_info->argc > function->args.max)
{
vle_tb_append_linef(vle_err, "%s: %s", "Too many arguments for function",
func_name);
return var_error();
}
return function->ptr(call_info);
}
/* Searches for function with specified name. Returns NULL in case of failed
* search. */
static function_t *
find_function(const char func_name[])
{
size_t i;
for(i = 0; i < function_count; i++)
{
if(strcmp(functions[i].name, func_name) == 0)
{
return &functions[i];
}
}
return NULL;
}
void
function_reset_all(void)
{
free(functions);
functions = NULL;
function_count = 0U;
}
void
function_complete_name(const char str[], const char **start)
{
size_t i;
size_t len;
*start = str;
len = strlen(str);
for(i = 0U; i < function_count; ++i)
{
const function_t *const func = &functions[i];
if(starts_withn(func->name, str, len))
{
vle_compl_put_match(format_str("%s(", func->name), func->descr);
}
}
vle_compl_finish_group();
vle_compl_add_last_match(str);
}
void
function_call_info_init(call_info_t *call_info, int interactive)
{
memset(call_info, 0, sizeof(*call_info));
call_info->interactive = interactive;
}
void
function_call_info_add_arg(call_info_t *call_info, var_t var)
{
var_t *ptr;
ptr = reallocarray(call_info->argv, call_info->argc + 1, sizeof(var_t));
if(ptr == NULL)
{
return;
}
ptr[call_info->argc++] = var;
call_info->argv = ptr;
}
void
function_call_info_free(call_info_t *call_info)
{
size_t i;
for(i = 0; i < call_info->argc; i++)
{
var_free(call_info->argv[i]);
}
free(call_info->argv);
call_info->argv = NULL;
call_info->argc = 0;
}
/* vim: set tabstop=2 softtabstop=2 shiftwidth=2 noexpandtab cinoptions-=(0 : */
/* vim: set cinoptions+=t0 filetype=c : */
Before first commit, do not forget to setup your git environment:
git config --global user.name "your_name_here"
git config --global user.email "your@email_here"
Clone this repository using HTTP(S):
git clone https://code.reversed.top/user/xaizek/vifm
Clone this repository using ssh (do not forget to upload a key first):
git clone ssh://rocketgit@code.reversed.top/user/xaizek/vifm
You are allowed to anonymously push to this repository.
This means that your pushed commits will automatically be transformed into a
pull request:
... clone the repository ...
... make some changes and some commits ...
git push origin master