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/** \file function.c
Functions for storing and retrieving function information.
*/
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>
#include <unistd.h>
#include <termios.h>
#include <signal.h>
#include "config.h"
#include "wutil.h"
#include "util.h"
#include "function.h"
#include "proc.h"
#include "parser.h"
#include "common.h"
#include "intern.h"
#include "event.h"
#include "reader.h"
#include "parse_util.h"
#include "env.h"
/**
Struct describing a function
*/
typedef struct
{
/** Function definition */
wchar_t *cmd;
/** Function description */
wchar_t *desc;
const wchar_t *definition_file;
int definition_offset;
int is_binding;
int is_autoload;
}
function_data_t;
/**
Table containing all functions
*/
static hash_table_t function;
static int is_autoload = 0;
static int load( const wchar_t *name )
{
int was_autoload = is_autoload;
int res;
function_data_t *data;
data = (function_data_t *)hash_get( &function, name );
if( data && !data->is_autoload )
return 0;
is_autoload = 1;
res = parse_util_load( name,
env_get( L"fish_function_path" ),
&function_remove,
1 );
is_autoload = was_autoload;
return res;
}
static void load_all()
{
}
/**
Free all contents of an entry to the function hash table
*/
static void clear_function_entry( const void *key,
const void *data )
{
function_data_t *d = (function_data_t *)data;
free( (void *)d->cmd );
free( (void *)d->desc );
free( (void *)d );
}
void function_init()
{
hash_init( &function,
&hash_wcs_func,
&hash_wcs_cmp );
}
void function_destroy()
{
hash_foreach( &function, &clear_function_entry );
hash_destroy( &function );
}
void function_add( const wchar_t *name,
const wchar_t *val,
const wchar_t *desc,
array_list_t *events,
int is_binding )
{
int i;
wchar_t *cmd_end;
function_data_t *d;
function_remove( name );
d = malloc( sizeof( function_data_t ) );
d->definition_offset = parse_util_lineno( parser_get_buffer(), current_block->tok_pos );
d->cmd = wcsdup( val );
cmd_end = d->cmd + wcslen(d->cmd)-1;
while( (cmd_end>d->cmd) && wcschr( L"\n\r\t ", *cmd_end ) )
{
*cmd_end-- = 0;
}
d->desc = desc?wcsdup( desc ):0;
d->is_binding = is_binding;
d->definition_file = intern(reader_current_filename());
d->is_autoload = is_autoload;
hash_put( &function, intern(name), d );
for( i=0; i<al_get_count( events ); i++ )
{
event_add_handler( (event_t *)al_get( events, i ) );
}
}
int function_exists( const wchar_t *cmd )
{
function_data_t *data;
if( parser_is_reserved(cmd) )
return 0;
load( cmd );
return (hash_get(&function, cmd) != 0 );
}
void function_remove( const wchar_t *name )
{
void *key;
function_data_t *d;
event_t ev;
hash_remove( &function,
name,
(const void **) &key,
(const void **)&d );
if( !key )
return;
ev.type=EVENT_ANY;
ev.function_name=name;
event_remove( &ev );
clear_function_entry( key, d );
}
const wchar_t *function_get_definition( const wchar_t *argv )
{
function_data_t *data;
load( argv );
data = (function_data_t *)hash_get( &function, argv );
if( data == 0 )
return 0;
return data->cmd;
}
const wchar_t *function_get_desc( const wchar_t *argv )
{
function_data_t *data;
load( argv );
data = (function_data_t *)hash_get( &function, argv );
if( data == 0 )
return 0;
return data->desc;
}
void function_set_desc( const wchar_t *name, const wchar_t *desc )
{
function_data_t *data;
load( name );
data = (function_data_t *)hash_get( &function, name );
if( data == 0 )
return;
data->desc =wcsdup(desc);
}
/**
Helper function for removing hidden functions
*/
static void get_names_internal( const void *key,
const void *val,
void *aux )
{
wchar_t *name = (wchar_t *)key;
function_data_t *f = (function_data_t *)val;
if( name[0] != L'_' && !f->is_binding)
al_push( (array_list_t *)aux, name );
}
void function_get_names( array_list_t *list, int get_hidden )
{
load_all();
if( get_hidden )
hash_get_keys( &function, list );
else
hash_foreach2( &function, &get_names_internal, list );
}
const wchar_t *function_get_definition_file( const wchar_t *argv )
{
function_data_t *data;
load( argv );
data = (function_data_t *)hash_get( &function, argv );
if( data == 0 )
return 0;
return data->definition_file;
}
int function_get_definition_offset( const wchar_t *argv )
{
function_data_t *data;
load( argv );
data = (function_data_t *)hash_get( &function, argv );
if( data == 0 )
return -1;
return data->definition_offset;
}
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