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#define _GNU_SOURCE 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <readline.h>
#include <history.h>
#include <lua.h>
#include "completion.h"
#include "gsl-shell.h"
static char *my_generator (const char *text, int state);
void initialize_readline()
{
rl_completion_entry_function = my_generator;
rl_basic_word_break_characters = " \t\n\"'~><=*+-/;,|[{(";
}
#define WORDS_BUFFER_SIZE 256
#define NODE_LIST_SIZE 8
char *my_generator (const char *text, int state)
{
static int list_index, len;
static const char *text_term;
static char words_buffer[WORDS_BUFFER_SIZE];
static char *node_list[NODE_LIST_SIZE];
static int word_number;
static char *base_word;
char *word;
lua_State *L = globalL;
int k;
if (!state)
{
const char *p, *curr = text;
int node_counter = 0, words_index = 0;
list_index = 0;
word_number = 0;
if (strlen (text) >= WORDS_BUFFER_SIZE)
return NULL;
for (p = strchr (curr, '.'); p; )
{
char *new_word = words_buffer + words_index;
int wlen = p - curr;
if (node_counter >= NODE_LIST_SIZE)
return NULL;
memcpy (new_word, curr, wlen);
new_word[wlen] = 0;
words_index += wlen+1;
node_list[node_counter] = new_word;
node_counter ++;
curr = p+1;
p = strchr (curr, '.');
word_number++;
}
text_term = curr;
len = strlen (text_term);
{
int wlen = curr - text;
base_word = words_buffer + words_index;
if (words_index + wlen + 1 >= WORDS_BUFFER_SIZE)
return NULL;
memcpy (base_word, text, wlen);
base_word[wlen] = 0;
}
}
lua_pushvalue (L, LUA_GLOBALSINDEX);
word = words_buffer;
for (k = 0; k < word_number; k++)
{
if (!lua_istable(L, -1))
goto pop_exit;
lua_getfield(L, -1, word);
lua_remove(L, -2);
word = strchr (word, '0円') + 1;
}
if (!lua_istable(L, -1))
goto pop_exit;
lua_pushnil (L);
for (k = 0; k < list_index; k++)
{
if (lua_next (L, -2) == 0)
goto pop_exit;
lua_pop (L, 1);
}
while (lua_next(L, -2) != 0)
{
const char *key = lua_tostring (L, -2);
list_index ++;
if (key)
{
if (strncmp (key, text_term, len) == 0)
{
char *new_word;
if (lua_istable (L, -1))
rl_completion_append_character = '.';
else
rl_completion_suppress_append = 1;
if (asprintf (&new_word, "%s%s", base_word, key) < 0)
{
lua_pop (L, 2);
goto pop_exit;
}
lua_pop (L, 3);
return new_word;
}
}
lua_pop (L, 1);
}
pop_exit:
lua_pop (L, 1);
return NULL;
}
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