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dis-bench / src /php /php-src /ext /readline /readline.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Thies C. Arntzen <thies@thieso.net> |
+----------------------------------------------------------------------+
*/
/* {{{ includes & prototypes */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "php_readline.h"
#include "readline_cli.h"
#include "readline_arginfo.h"
#if defined(HAVE_LIBREADLINE) || defined(HAVE_LIBEDIT)
#ifndef HAVE_RL_COMPLETION_MATCHES
#define rl_completion_matches completion_matches
#endif
#ifdef HAVE_LIBEDIT
#include <editline/readline.h>
#else
#include <readline/readline.h>
#include <readline/history.h>
#endif
#ifdef HAVE_RL_CALLBACK_READ_CHAR
static zval _prepped_callback;
#endif
static zval _readline_completion;
static zval _readline_array;
PHP_MINIT_FUNCTION(readline);
PHP_MSHUTDOWN_FUNCTION(readline);
PHP_RSHUTDOWN_FUNCTION(readline);
PHP_MINFO_FUNCTION(readline);
/* }}} */
/* {{{ module stuff */
zend_module_entry readline_module_entry = {
STANDARD_MODULE_HEADER,
"readline",
ext_functions,
PHP_MINIT(readline),
PHP_MSHUTDOWN(readline),
NULL,
PHP_RSHUTDOWN(readline),
PHP_MINFO(readline),
PHP_READLINE_VERSION,
STANDARD_MODULE_PROPERTIES
};
#ifdef COMPILE_DL_READLINE
ZEND_GET_MODULE(readline)
#endif
PHP_MINIT_FUNCTION(readline)
{
#ifdef HAVE_LIBREADLINE
/* libedit don't need this call which set the tty in cooked mode */
using_history();
#endif
ZVAL_UNDEF(&_readline_completion);
#ifdef HAVE_RL_CALLBACK_READ_CHAR
ZVAL_UNDEF(&_prepped_callback);
#endif
register_readline_symbols(module_number);
return PHP_MINIT(cli_readline)(INIT_FUNC_ARGS_PASSTHRU);
}
PHP_MSHUTDOWN_FUNCTION(readline)
{
return PHP_MSHUTDOWN(cli_readline)(SHUTDOWN_FUNC_ARGS_PASSTHRU);
}
PHP_RSHUTDOWN_FUNCTION(readline)
{
zval_ptr_dtor(&_readline_completion);
ZVAL_UNDEF(&_readline_completion);
#ifdef HAVE_RL_CALLBACK_READ_CHAR
if (Z_TYPE(_prepped_callback) != IS_UNDEF) {
rl_callback_handler_remove();
zval_ptr_dtor(&_prepped_callback);
ZVAL_UNDEF(&_prepped_callback);
}
#endif
return SUCCESS;
}
PHP_MINFO_FUNCTION(readline)
{
PHP_MINFO(cli_readline)(ZEND_MODULE_INFO_FUNC_ARGS_PASSTHRU);
}
/* }}} */
/* {{{ Reads a line */
PHP_FUNCTION(readline)
{
char *prompt = NULL;
size_t prompt_len;
char *result;
if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "|s!", &prompt, &prompt_len)) {
RETURN_THROWS();
}
result = readline(prompt);
if (! result) {
RETURN_FALSE;
} else {
RETVAL_STRING(result);
free(result);
}
}
/* }}} */
#define SAFE_STRING(s) ((s)?(char*)(s):"")
/* {{{ Gets/sets various internal readline variables. */
PHP_FUNCTION(readline_info)
{
zend_string *what = NULL;
zval *value = NULL;
size_t oldval;
char *oldstr;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!z!", &what, &value) == FAILURE) {
RETURN_THROWS();
}
if (!what) {
array_init(return_value);
add_assoc_string(return_value,"line_buffer",SAFE_STRING(rl_line_buffer));
add_assoc_long(return_value,"point",rl_point);
#ifndef PHP_WIN32
add_assoc_long(return_value,"end",rl_end);
#endif
#ifdef HAVE_LIBREADLINE
add_assoc_long(return_value,"mark",rl_mark);
add_assoc_long(return_value,"done",rl_done);
add_assoc_long(return_value,"pending_input",rl_pending_input);
add_assoc_string(return_value,"prompt",SAFE_STRING(rl_prompt));
add_assoc_string(return_value,"terminal_name",(char *)SAFE_STRING(rl_terminal_name));
add_assoc_str(return_value, "completion_append_character",
rl_completion_append_character == 0
? ZSTR_EMPTY_ALLOC()
: ZSTR_CHAR(rl_completion_append_character));
add_assoc_bool(return_value,"completion_suppress_append",rl_completion_suppress_append);
#endif
#ifdef HAVE_ERASE_EMPTY_LINE
add_assoc_long(return_value,"erase_empty_line",rl_erase_empty_line);
#endif
#ifndef PHP_WIN32
add_assoc_string(return_value,"library_version",(char *)SAFE_STRING(rl_library_version));
#endif
add_assoc_string(return_value,"readline_name",(char *)SAFE_STRING(rl_readline_name));
add_assoc_long(return_value,"attempted_completion_over",rl_attempted_completion_over);
} else {
if (zend_string_equals_literal_ci(what,"line_buffer")) {
oldstr = strdup(rl_line_buffer ? rl_line_buffer : "");
if (value) {
if (!try_convert_to_string(value)) {
RETURN_THROWS();
}
#if !defined(PHP_WIN32) && !defined(HAVE_LIBEDIT)
if (!rl_line_buffer) {
rl_line_buffer = malloc(Z_STRLEN_P(value) + 1);
} else if (strlen(oldstr) < Z_STRLEN_P(value)) {
rl_extend_line_buffer(Z_STRLEN_P(value) + 1);
free(oldstr);
oldstr = strdup(rl_line_buffer ? rl_line_buffer : "");
}
memcpy(rl_line_buffer, Z_STRVAL_P(value), Z_STRLEN_P(value) + 1);
#else
char *tmp = strdup(Z_STRVAL_P(value));
if (tmp) {
if (rl_line_buffer) {
free(rl_line_buffer);
}
rl_line_buffer = tmp;
}
#endif
#if !defined(PHP_WIN32)
rl_end = Z_STRLEN_P(value);
#endif
}
RETVAL_STRING(SAFE_STRING(oldstr));
free(oldstr);
} else if (zend_string_equals_literal_ci(what, "point")) {
RETVAL_LONG(rl_point);
#ifndef PHP_WIN32
} else if (zend_string_equals_literal_ci(what, "end")) {
RETVAL_LONG(rl_end);
#endif
#ifdef HAVE_LIBREADLINE
} else if (zend_string_equals_literal_ci(what, "mark")) {
RETVAL_LONG(rl_mark);
} else if (zend_string_equals_literal_ci(what, "done")) {
oldval = rl_done;
if (value) {
rl_done = zval_get_long(value);
}
RETVAL_LONG(oldval);
} else if (zend_string_equals_literal_ci(what, "pending_input")) {
oldval = rl_pending_input;
if (value) {
if (!try_convert_to_string(value)) {
RETURN_THROWS();
}
rl_pending_input = Z_STRVAL_P(value)[0];
}
RETVAL_LONG(oldval);
} else if (zend_string_equals_literal_ci(what, "prompt")) {
RETVAL_STRING(SAFE_STRING(rl_prompt));
} else if (zend_string_equals_literal_ci(what, "terminal_name")) {
RETVAL_STRING((char *)SAFE_STRING(rl_terminal_name));
} else if (zend_string_equals_literal_ci(what, "completion_suppress_append")) {
oldval = rl_completion_suppress_append;
if (value) {
rl_completion_suppress_append = zend_is_true(value);
}
RETVAL_BOOL(oldval);
} else if (zend_string_equals_literal_ci(what, "completion_append_character")) {
oldval = rl_completion_append_character;
if (value) {
if (!try_convert_to_string(value)) {
RETURN_THROWS();
}
rl_completion_append_character = (int)Z_STRVAL_P(value)[0];
}
RETVAL_INTERNED_STR(
oldval == 0 ? ZSTR_EMPTY_ALLOC() : ZSTR_CHAR(oldval));
#endif
#ifdef HAVE_ERASE_EMPTY_LINE
} else if (zend_string_equals_literal_ci(what, "erase_empty_line")) {
oldval = rl_erase_empty_line;
if (value) {
rl_erase_empty_line = zval_get_long(value);
}
RETVAL_LONG(oldval);
#endif
#ifndef PHP_WIN32
} else if (zend_string_equals_literal_ci(what,"library_version")) {
RETVAL_STRING((char *)SAFE_STRING(rl_library_version));
#endif
} else if (zend_string_equals_literal_ci(what, "readline_name")) {
oldstr = (char*)rl_readline_name;
if (value) {
/* XXX if (rl_readline_name) free(rl_readline_name); */
if (!try_convert_to_string(value)) {
RETURN_THROWS();
}
rl_readline_name = strdup(Z_STRVAL_P(value));
}
RETVAL_STRING(SAFE_STRING(oldstr));
} else if (zend_string_equals_literal_ci(what, "attempted_completion_over")) {
oldval = rl_attempted_completion_over;
if (value) {
rl_attempted_completion_over = zval_get_long(value);
}
RETVAL_LONG(oldval);
}
}
}
/* }}} */
/* {{{ Adds a line to the history */
PHP_FUNCTION(readline_add_history)
{
char *arg;
size_t arg_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &arg, &arg_len) == FAILURE) {
RETURN_THROWS();
}
add_history(arg);
RETURN_TRUE;
}
/* }}} */
/* {{{ Clears the history */
PHP_FUNCTION(readline_clear_history)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
#ifdef HAVE_LIBEDIT
/* clear_history is the only function where rl_initialize
is not call to ensure correct allocation */
using_history();
#endif
clear_history();
RETURN_TRUE;
}
/* }}} */
#ifdef HAVE_HISTORY_LIST
/* {{{ Lists the history */
PHP_FUNCTION(readline_list_history)
{
HIST_ENTRY **history;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
array_init(return_value);
#if defined(HAVE_LIBEDIT) && defined(PHP_WIN32) /* Winedit on Windows */
history = history_list();
if (history) {
int i, n = history_length();
for (i = 0; i < n; i++) {
add_next_index_string(return_value, history[i]->line);
}
}
#elif defined(HAVE_LIBEDIT) /* libedit */
{
HISTORY_STATE *hs;
int i;
using_history();
hs = history_get_history_state();
if (hs && hs->length) {
history = history_list();
if (history) {
for (i = 0; i < hs->length; i++) {
add_next_index_string(return_value, history[i]->line);
}
}
}
free(hs);
}
#else /* readline */
history = history_list();
if (history) {
int i;
for (i = 0; history[i]; i++) {
add_next_index_string(return_value, history[i]->line);
}
}
#endif
}
/* }}} */
#endif
/* {{{ Reads the history */
PHP_FUNCTION(readline_read_history)
{
char *arg = NULL;
size_t arg_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|p!", &arg, &arg_len) == FAILURE) {
RETURN_THROWS();
}
if (arg && php_check_open_basedir(arg)) {
RETURN_FALSE;
}
/* XXX from & to NYI */
if (read_history(arg)) {
/* If filename is NULL, then read from `~/.history' */
RETURN_FALSE;
} else {
RETURN_TRUE;
}
}
/* }}} */
/* {{{ Writes the history */
PHP_FUNCTION(readline_write_history)
{
char *arg = NULL;
size_t arg_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|p!", &arg, &arg_len) == FAILURE) {
RETURN_THROWS();
}
if (arg && php_check_open_basedir(arg)) {
RETURN_FALSE;
}
if (write_history(arg)) {
RETURN_FALSE;
} else {
RETURN_TRUE;
}
}
/* }}} */
/* {{{ Readline completion function? */
static char *_readline_command_generator(const char *text, int state)
{
HashTable *myht = Z_ARRVAL(_readline_array);
zval *entry;
if (!state) {
zend_hash_internal_pointer_reset(myht);
}
while ((entry = zend_hash_get_current_data(myht)) != NULL) {
zend_hash_move_forward(myht);
convert_to_string(entry);
if (strncmp (Z_STRVAL_P(entry), text, strlen(text)) == 0) {
return (strdup(Z_STRVAL_P(entry)));
}
}
return NULL;
}
static void _readline_string_zval(zval *ret, const char *str)
{
if (str) {
ZVAL_STRING(ret, (char*)str);
} else {
ZVAL_NULL(ret);
}
}
char **php_readline_completion_cb(const char *text, int start, int end)
{
zval params[3];
char **matches = NULL;
_readline_string_zval(&params[0], text);
ZVAL_LONG(&params[1], start);
ZVAL_LONG(&params[2], end);
if (call_user_function(NULL, NULL, &_readline_completion, &_readline_array, 3, params) == SUCCESS) {
if (Z_TYPE(_readline_array) == IS_ARRAY) {
SEPARATE_ARRAY(&_readline_array);
if (zend_hash_num_elements(Z_ARRVAL(_readline_array))) {
matches = rl_completion_matches(text,_readline_command_generator);
} else {
/* libedit will read matches[2] */
matches = calloc(3, sizeof(char *));
if (!matches) {
goto out;
}
matches[0] = strdup("");
}
}
}
out:
zval_ptr_dtor(&params[0]);
zval_ptr_dtor(&_readline_array);
return matches;
}
PHP_FUNCTION(readline_completion_function)
{
zend_fcall_info fci;
zend_fcall_info_cache fcc;
if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "f", &fci, &fcc)) {
RETURN_THROWS();
}
zval_ptr_dtor(&_readline_completion);
ZVAL_COPY(&_readline_completion, &fci.function_name);
/* NOTE: The rl_attempted_completion_function variable (and others) are part of the readline library, not php */
rl_attempted_completion_function = php_readline_completion_cb;
if (rl_attempted_completion_function == NULL) {
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#ifdef HAVE_RL_CALLBACK_READ_CHAR
static void php_rl_callback_handler(char *the_line)
{
zval params[1];
zval dummy;
ZVAL_NULL(&dummy);
_readline_string_zval(&params[0], the_line);
call_user_function(NULL, NULL, &_prepped_callback, &dummy, 1, params);
zval_ptr_dtor(&params[0]);
zval_ptr_dtor(&dummy);
}
/* {{{ Initializes the readline callback interface and terminal, prints the prompt and returns immediately */
PHP_FUNCTION(readline_callback_handler_install)
{
char *prompt;
zend_fcall_info fci;
zend_fcall_info_cache fcc;
size_t prompt_len;
if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "sf", &prompt, &prompt_len, &fci, &fcc)) {
RETURN_THROWS();
}
if (Z_TYPE(_prepped_callback) != IS_UNDEF) {
rl_callback_handler_remove();
zval_ptr_dtor(&_prepped_callback);
}
ZVAL_COPY(&_prepped_callback, &fci.function_name);
rl_callback_handler_install(prompt, php_rl_callback_handler);
RETURN_TRUE;
}
/* }}} */
/* {{{ Informs the readline callback interface that a character is ready for input */
PHP_FUNCTION(readline_callback_read_char)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
if (Z_TYPE(_prepped_callback) != IS_UNDEF) {
rl_callback_read_char();
}
}
/* }}} */
/* {{{ Removes a previously installed callback handler and restores terminal settings */
PHP_FUNCTION(readline_callback_handler_remove)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
if (Z_TYPE(_prepped_callback) != IS_UNDEF) {
rl_callback_handler_remove();
zval_ptr_dtor(&_prepped_callback);
ZVAL_UNDEF(&_prepped_callback);
RETURN_TRUE;
}
RETURN_FALSE;
}
/* }}} */
/* {{{ Ask readline to redraw the display */
PHP_FUNCTION(readline_redisplay)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
#ifdef HAVE_LIBEDIT
/* seems libedit doesn't take care of rl_initialize in rl_redisplay
* see bug #72538 */
using_history();
#endif
rl_redisplay();
}
/* }}} */
#endif
#ifdef HAVE_RL_ON_NEW_LINE
/* {{{ Inform readline that the cursor has moved to a new line */
PHP_FUNCTION(readline_on_new_line)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
rl_on_new_line();
}
/* }}} */
#endif
#endif /* HAVE_LIBREADLINE */