windows: Implement the mp_hal_xxx functions and enable mp-readline

windows/Makefile

@@ -31,10 +31,10 @@ SRC_C = \
 	unix/main.c \
 	unix/file.c \
 	unix/input.c \
-	unix/unix_mphal.c \
 	unix/modos.c \
 	unix/modtime.c \
 	unix/gccollect.c \
+	windows_mphal.c \
 	realpath.c \
 	init.c \
 	sleep.c \
@@ -43,6 +43,9 @@ OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
 
 ifeq ($(MICROPY_USE_READLINE),1)
 CFLAGS_MOD += -DMICROPY_USE_READLINE=1
+SRC_C += lib/mp-readline/readline.c
+else ifeq ($(MICROPY_USE_READLINE),2)
+CFLAGS_MOD += -DMICROPY_USE_READLINE=2
 LDFLAGS_MOD += -lreadline
 # the following is needed for BSD
 #LDFLAGS_MOD += -ltermcap

windows/mpconfigport.h

@@ -26,9 +26,9 @@
 
 // options to control how Micro Python is built
 
-// Linking with GNU readline causes binary to be licensed under GPL
+// Linking with GNU readline (MICROPY_USE_READLINE == 2) causes binary to be licensed under GPL
 #ifndef MICROPY_USE_READLINE
-#define MICROPY_USE_READLINE        (0)
+#define MICROPY_USE_READLINE        (1)
 #endif
 
 #define MICROPY_ALLOC_PATH_MAX      (260) //see minwindef.h for msvc or limits.h for mingw
@@ -43,6 +43,7 @@
 #define MICROPY_MALLOC_USES_ALLOCATED_SIZE (1)
 #define MICROPY_MEM_STATS           (1)
 #define MICROPY_DEBUG_PRINTERS      (1)
+#define MICROPY_USE_READLINE_HISTORY (1)
 #define MICROPY_HELPER_REPL         (1)
 #define MICROPY_HELPER_LEXER_UNIX   (1)
 #define MICROPY_ENABLE_SOURCE_LINE  (1)
@@ -139,6 +140,15 @@ extern const struct _mp_obj_module_t mp_module_time;
     { MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&mp_module_time }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR__os), (mp_obj_t)&mp_module_os }, \
 
+#if MICROPY_USE_READLINE == 1
+#define MICROPY_PORT_ROOT_POINTERS \
+    char *readline_hist[50];
+#endif
+
+#define MP_STATE_PORT               MP_STATE_VM
+
+#define MICROPY_HAL_H               "windows_mphal.h"
+
 // We need to provide a declaration/definition of alloca()
 #include <malloc.h>
 

windows/mpconfigport.mk

@@ -4,7 +4,7 @@
 MICROPY_FORCE_32BIT = 0
 
 # Linking with GNU readline causes binary to be licensed under GPL
-MICROPY_USE_READLINE = 0
+MICROPY_USE_READLINE = 1
 
 # Subset of CPython time module
 MICROPY_PY_TIME = 1

windows/msvc/sources.props

@@ -4,9 +4,10 @@
   <ItemGroup>
     <ClCompile Include="$(PyBaseDir)py\*.c" />
     <ClCompile Include="$(PyBaseDir)extmod\*.c" />
-    <ClCompile Include="$(PyBaseDir)unix\*.c" Exclude="$(PyBaseDir)unix\alloc.c;$(PyBaseDir)unix\modffi.c;$(PyBaseDir)unix\modsocket.c;$(PyBaseDir)unix\modtermios.c;$(PyBaseDir)unix\seg_helpers.c" />
+    <ClCompile Include="$(PyBaseDir)unix\*.c" Exclude="$(PyBaseDir)unix\alloc.c;$(PyBaseDir)unix\modffi.c;$(PyBaseDir)unix\modsocket.c;$(PyBaseDir)unix\modtermios.c;$(PyBaseDir)unix\seg_helpers.c;$(PyBaseDir)unix\unix_mphal.c" />
     <ClCompile Include="$(PyBaseDir)windows\*.c" />
     <ClCompile Include="$(PyBaseDir)windows\msvc\*.c" />
+    <ClCompile Include="$(PyBaseDir)lib\mp-readline\*.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="$(PyBaseDir)py\*.h" />

windows/windows_mphal.c

+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 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 "py/mpstate.h"
+
+#include MICROPY_HAL_H
+#include <windows.h>
+#include <unistd.h>
+
+HANDLE std_in = NULL;
+HANDLE con_out = NULL;
+DWORD orig_mode = 0;
+
+STATIC void assure_stdin_handle() {
+    if (!std_in) {
+        std_in = GetStdHandle(STD_INPUT_HANDLE);
+        assert(std_in != INVALID_HANDLE_VALUE);
+    }
+}
+
+STATIC void assure_conout_handle() {
+    if (!con_out) {
+        con_out = CreateFile("CONOUT$", GENERIC_READ | GENERIC_WRITE,
+                      FILE_SHARE_READ | FILE_SHARE_WRITE,
+                      NULL, OPEN_EXISTING, 0, 0);
+        assert(con_out != INVALID_HANDLE_VALUE);
+    }
+}
+
+void mp_hal_stdio_mode_raw(void) {
+    assure_stdin_handle();
+    GetConsoleMode(std_in, &orig_mode);
+    DWORD mode = orig_mode;
+    mode &= ~ENABLE_ECHO_INPUT;
+    mode &= ~ENABLE_LINE_INPUT;
+    mode &= ~ENABLE_PROCESSED_INPUT;
+    SetConsoleMode(std_in, mode);
+}
+
+void mp_hal_stdio_mode_orig(void) {
+    assure_stdin_handle();
+    SetConsoleMode(std_in, orig_mode);
+}
+
+void mp_hal_set_interrupt_char(char c) {
+    assure_stdin_handle();
+    if (c == CHAR_CTRL_C) {
+        DWORD mode;
+        GetConsoleMode(std_in, &mode);
+        mode |= ENABLE_PROCESSED_INPUT;
+        SetConsoleMode(std_in, mode);
+    } else {
+        DWORD mode;
+        GetConsoleMode(std_in, &mode);
+        mode &= ~ENABLE_PROCESSED_INPUT;
+        SetConsoleMode(std_in, mode);
+    }
+}
+
+void mp_hal_move_cursor_back(uint pos) {
+    assure_conout_handle();
+    CONSOLE_SCREEN_BUFFER_INFO info;
+    GetConsoleScreenBufferInfo(con_out, &info);
+    info.dwCursorPosition.X -= (short)pos;
+    if (info.dwCursorPosition.X < 0) {
+        info.dwCursorPosition.X = 0;
+    }
+    SetConsoleCursorPosition(con_out, info.dwCursorPosition);
+}
+
+void mp_hal_erase_line_from_cursor() {
+    assure_conout_handle();
+    CONSOLE_SCREEN_BUFFER_INFO info;
+    GetConsoleScreenBufferInfo(con_out, &info);
+    const short len = info.dwSize.X - info.dwCursorPosition.X;
+    DWORD written;
+    FillConsoleOutputCharacter(con_out, ' ', len, info.dwCursorPosition, &written);
+    FillConsoleOutputAttribute(con_out, info.wAttributes, len, info.dwCursorPosition, &written);
+}
+
+typedef struct item_t {
+    WORD vkey;
+    const char *seq;
+} item_t;
+
+// map virtual key codes to VT100 escape sequences
+STATIC item_t keyCodeMap[] = {
+    {VK_UP, "[A"},
+    {VK_DOWN, "[B"},
+    {VK_RIGHT, "[C"},
+    {VK_LEFT, "[D"},
+    {VK_HOME, "[H"},
+    {VK_END, "[F"},
+    {VK_DELETE, "[3~"},
+    {0, ""} //sentinel
+};
+
+STATIC const char *cur_esc_seq = NULL;
+
+STATIC int esc_seq_process_vk(int vk) {
+    for (item_t *p = keyCodeMap; p->vkey != 0; ++p) {
+        if (p->vkey == vk) {
+            cur_esc_seq = p->seq;
+            return 27; // ESC, start of escape sequence
+        }
+    }
+    return 0; // nothing found
+}
+
+STATIC int esc_seq_chr() {
+    if (cur_esc_seq) {
+        const char c = *cur_esc_seq++;
+        if (c) {
+            return c;
+        }
+        cur_esc_seq = NULL;
+    }
+    return 0;
+}
+
+int mp_hal_stdin_rx_chr(void) {
+    // currently processing escape seq?
+    const int ret = esc_seq_chr();
+    if (ret) {
+        return ret;
+    }
+
+    // poll until key which we handle is pressed
+    assure_stdin_handle();
+    DWORD num_read;
+    INPUT_RECORD rec;
+    for (;;) {
+      if (!ReadConsoleInput(std_in, &rec, 1, &num_read) || !num_read) {
+          return CHAR_CTRL_C; // EOF, ctrl-D
+      }
+      if (rec.EventType != KEY_EVENT || !rec.Event.KeyEvent.bKeyDown) { // only want key down events
+          continue;
+      }
+      const char c = rec.Event.KeyEvent.uChar.AsciiChar;
+      if (c) { // plain ascii char, return it
+          return c;
+      }
+      const int ret = esc_seq_process_vk(rec.Event.KeyEvent.wVirtualKeyCode);
+      if (ret) {
+          return ret;
+      }
+    }
+}
+
+void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
+    write(1, str, len);
+}
+
+void mp_hal_stdout_tx_strn_cooked(const char *str, mp_uint_t len) {
+    mp_hal_stdout_tx_strn(str, len);
+}
+
+void mp_hal_stdout_tx_str(const char *str) {
+    mp_hal_stdout_tx_strn(str, strlen(str));
+}

windows/windows_mphal.h

+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 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 "unix/unix_mphal.h"
+
+#define MICROPY_HAL_HAS_VT100 (0)
+
+void mp_hal_move_cursor_back(unsigned int pos);
+void mp_hal_erase_line_from_cursor();