circuitpython/py/builtinhelp.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
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* SPDX-FileCopyrightText: Copyright (c) 2013-2016 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include "genhdr/mpversion.h"
#include "py/builtin.h"
Merge tag 'v1.9.1' Fixes for stmhal USB mass storage, lwIP bindings and VFS regressions This release provides an important fix for the USB mass storage device in the stmhal port by implementing the SCSI SYNCHRONIZE_CACHE command, which is now require by some Operating Systems. There are also fixes for the lwIP bindings to improve non-blocking sockets and error codes. The VFS has some regressions fixed including the ability to statvfs the root. All changes are listed below. py core: - modbuiltins: add core-provided version of input() function - objstr: catch case of negative "maxsplit" arg to str.rsplit() - persistentcode: allow to compile with complex numbers disabled - objstr: allow to compile with obj-repr D, and unicode disabled - modsys: allow to compile with obj-repr D and PY_ATTRTUPLE disabled - provide mp_decode_uint_skip() to help reduce stack usage - makeqstrdefs.py: make script run correctly with Python 2.6 - objstringio: if created from immutable object, follow copy on write policy extmod: - modlwip: connect: for non-blocking mode, return EINPROGRESS - modlwip: fix error codes for duplicate calls to connect() - modlwip: accept: fix error code for non-blocking mode - vfs: allow to statvfs the root directory - vfs: allow "buffering" and "encoding" args to VFS's open() - modframebuf: fix signed/unsigned comparison pendantic warning lib: - libm: use isfinite instead of finitef, for C99 compatibility - utils/interrupt_char: remove support for KBD_EXCEPTION disabled tests: - basics/string_rsplit: add tests for negative "maxsplit" argument - float: convert "sys.exit()" to "raise SystemExit" - float/builtin_float_minmax: PEP8 fixes - basics: convert "sys.exit()" to "raise SystemExit" - convert remaining "sys.exit()" to "raise SystemExit" unix port: - convert to use core-provided version of built-in import() - Makefile: replace references to make with $(MAKE) windows port: - convert to use core-provided version of built-in import() qemu-arm port: - Makefile: adjust object-file lists to get correct dependencies - enable micropython.mem_*() functions to allow more tests stmhal port: - boards: enable DAC for NUCLEO_F767ZI board - add support for NUCLEO_F446RE board - pass USB handler as parameter to allow more than one USB handler - usb: use local USB handler variable in Start-of-Frame handler - usb: make state for USB device private to top-level USB driver - usbdev: for MSC implement SCSI SYNCHRONIZE_CACHE command - convert from using stmhal's input() to core provided version cc3200 port: - convert from using stmhal's input() to core provided version teensy port: - convert from using stmhal's input() to core provided version esp8266 port: - Makefile: replace references to make with $(MAKE) - Makefile: add clean-modules target - convert from using stmhal's input() to core provided version zephyr port: - modusocket: getaddrinfo: Fix mp_obj_len() usage - define MICROPY_PY_SYS_PLATFORM (to "zephyr") - machine_pin: use native Zephyr types for Zephyr API calls docs: - machine.Pin: remove out_value() method - machine.Pin: add on() and off() methods - esp8266: consistently replace Pin.high/low methods with .on/off - esp8266/quickref: polish Pin.on()/off() examples - network: move confusingly-named cc3200 Server class to its reference - uos: deconditionalize, remove minor port-specific details - uos: move cc3200 port legacy VFS mounting functions to its ref doc - machine: sort machine classes in logical order, not alphabetically - network: first step to describe standard network class interface examples: - embedding: use core-provided KeyboardInterrupt object
2017-06-20 13:56:05 -04:00
#include "py/mpconfig.h"
#include "py/objmodule.h"
#if MICROPY_PY_BUILTINS_HELP
const char mp_help_default_text[] =
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"Welcome to MicroPython!\n"
"\n"
"For online docs please visit http://docs.micropython.org/\n"
"\n"
"Control commands:\n"
" CTRL-A -- on a blank line, enter raw REPL mode\n"
" CTRL-B -- on a blank line, enter normal REPL mode\n"
" CTRL-C -- interrupt a running program\n"
" CTRL-D -- on a blank line, exit or do a soft reset\n"
" CTRL-E -- on a blank line, enter paste mode\n"
"\n"
"For further help on a specific object, type help(obj)\n"
;
STATIC void mp_help_print_info_about_object(mp_obj_t name_o, mp_obj_t value) {
mp_print_str(MP_PYTHON_PRINTER, " ");
mp_obj_print(name_o, PRINT_STR);
mp_print_str(MP_PYTHON_PRINTER, " -- ");
mp_obj_print(value, PRINT_STR);
mp_print_str(MP_PYTHON_PRINTER, "\n");
}
#if MICROPY_PY_BUILTINS_HELP_MODULES
STATIC void mp_help_add_from_map(mp_obj_t list, const mp_map_t *map) {
for (size_t i = 0; i < map->alloc; i++) {
if (mp_map_slot_is_filled(map, i)) {
mp_obj_list_append(list, map->table[i].key);
}
}
}
#if MICROPY_MODULE_FROZEN
STATIC void mp_help_add_from_names(mp_obj_t list, const char *name) {
while (*name) {
size_t l = strlen(name);
// name should end in '.py' and we strip it off
mp_obj_list_append(list, mp_obj_new_str(name, l - 3));
name += l + 1;
}
}
#endif
// These externs were originally declared inside mp_help_print_modules(),
// but they triggered -Wnested-externs, so they were moved outside.
#if MICROPY_MODULE_FROZEN_STR
extern const char mp_frozen_str_names[];
#endif
#if MICROPY_MODULE_FROZEN_MPY
extern const char mp_frozen_mpy_names[];
#endif
STATIC void mp_help_print_modules(void) {
mp_obj_t list = mp_obj_new_list(0, NULL);
mp_help_add_from_map(list, &mp_builtin_module_map);
#if MICROPY_MODULE_FROZEN_STR
mp_help_add_from_names(list, mp_frozen_str_names);
#endif
#if MICROPY_MODULE_FROZEN_MPY
mp_help_add_from_names(list, mp_frozen_mpy_names);
#endif
// sort the list so it's printed in alphabetical order
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mp_obj_list_sort(1, &list, (mp_map_t *)&mp_const_empty_map);
// print the list of modules in a column-first order
#define NUM_COLUMNS (4)
#define COLUMN_WIDTH (18)
size_t len;
mp_obj_t *items;
mp_obj_list_get(list, &len, &items);
unsigned int num_rows = (len + NUM_COLUMNS - 1) / NUM_COLUMNS;
for (unsigned int i = 0; i < num_rows; ++i) {
unsigned int j = i;
for (;;) {
int l = mp_print_str(MP_PYTHON_PRINTER, mp_obj_str_get_str(items[j]));
j += num_rows;
if (j >= len) {
break;
}
int gap = COLUMN_WIDTH - l;
while (gap < 1) {
gap += COLUMN_WIDTH;
}
while (gap--) {
mp_print_str(MP_PYTHON_PRINTER, " ");
}
}
mp_print_str(MP_PYTHON_PRINTER, "\n");
}
#if MICROPY_ENABLE_EXTERNAL_IMPORT
// let the user know there may be other modules available from the filesystem
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const compressed_string_t *compressed = translate("Plus any modules on the filesystem\n");
char decompressed[decompress_length(compressed)];
decompress(compressed, decompressed);
mp_print_str(MP_PYTHON_PRINTER, decompressed);
#endif
}
#endif
STATIC void mp_help_print_obj(const mp_obj_t obj) {
#if MICROPY_PY_BUILTINS_HELP_MODULES
if (obj == MP_OBJ_NEW_QSTR(MP_QSTR_modules)) {
mp_help_print_modules();
return;
}
#endif
mp_obj_type_t *type = mp_obj_get_type(obj);
// try to print something sensible about the given object
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const compressed_string_t *compressed = translate("object ");
char decompressed_object[decompress_length(compressed)];
decompress(compressed, decompressed_object);
mp_print_str(MP_PYTHON_PRINTER, decompressed_object);
mp_obj_print(obj, PRINT_STR);
compressed = translate(" is of type %q\n");
char decompressed_typestring[decompress_length(compressed)];
decompress(compressed, decompressed_typestring);
mp_printf(MP_PYTHON_PRINTER, decompressed_typestring, type->name);
mp_map_t *map = NULL;
if (type == &mp_type_module) {
map = &mp_obj_module_get_globals(obj)->map;
} else {
if (type == &mp_type_type) {
type = MP_OBJ_TO_PTR(obj);
}
if (type->locals_dict != NULL) {
map = &type->locals_dict->map;
}
}
if (map != NULL) {
for (uint i = 0; i < map->alloc; i++) {
if (map->table[i].key != MP_OBJ_NULL) {
mp_help_print_info_about_object(map->table[i].key, map->table[i].value);
}
}
}
}
STATIC mp_obj_t mp_builtin_help(size_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
// print a general help message. Translate only works on single strings on one line.
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const compressed_string_t *compressed =
translate("Welcome to Adafruit CircuitPython %s!\n\nPlease visit learn.adafruit.com/category/circuitpython for project guides.\n\nTo list built-in modules please do `help(\"modules\")`.\n");
char decompressed[decompress_length(compressed)];
decompress(compressed, decompressed);
mp_printf(MP_PYTHON_PRINTER, decompressed, MICROPY_GIT_TAG);
} else {
// try to print something sensible about the given object
mp_help_print_obj(args[0]);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_help_obj, 0, 1, mp_builtin_help);
#endif // MICROPY_PY_BUILTINS_HELP