1 files changed, 90 insertions, 0 deletions

diff --git a/miscutils/less.c b/miscutils/less.c
index 223c2558d..a5ce14c91 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -145,6 +145,10 @@
 
 #include <sched.h>  /* sched_yield() */
 
+#if ENABLE_PLATFORM_MINGW32
+#include <conio.h>
+#endif
+
 #include "libbb.h"
 #include "common_bufsiz.h"
 #if ENABLE_FEATURE_LESS_REGEXP
@@ -236,7 +240,9 @@ struct globals {
         smallint winsize_err;
 #endif
         smallint terminated;
+#if !ENABLE_PLATFORM_MINGW32
         struct termios term_orig, term_less;
+#endif
         char kbd_input[KEYCODE_BUFFER_SIZE];
 };
 #define G (*ptr_to_globals)
@@ -298,7 +304,9 @@ struct globals {
 static void set_tty_cooked(void)
 {
         fflush_all();
+#if !ENABLE_PLATFORM_MINGW32
         tcsetattr(kbd_fd, TCSANOW, &term_orig);
+#endif
 }
 
 /* Move the cursor to a position (x,y), where (0,0) is the
@@ -330,7 +338,11 @@ static void less_exit(int code)
         set_tty_cooked();
         if (!(G.kbd_fd_orig_flags & O_NONBLOCK))
                 ndelay_off(kbd_fd);
+#if !ENABLE_PLATFORM_MINGW32
         clear_line();
+#else
+        printf(ESC"[?1049l");
+#endif
         if (code < 0)
                 kill_myself_with_sig(- code); /* does not return */
         exit(code);
@@ -575,6 +587,11 @@ static void read_lines(void)
                                 last_line_pos = 0;
                                 break;
                         }
+#if ENABLE_PLATFORM_MINGW32
+                        if (c == '\r') {
+                                continue;
+                        }
+#endif
                         /* NUL is substituted by '\n'! */
                         if (c == '\0') c = '\n';
                         *p++ = c;
@@ -671,7 +688,12 @@ static void update_num_lines(void)
         /* only do this for regular files */
         if (num_lines == REOPEN_AND_COUNT || num_lines == REOPEN_STDIN) {
                 count = 0;
+#if !ENABLE_PLATFORM_MINGW32
                 fd = open("/proc/self/fd/0", O_RDONLY);
+#else
+                /* don't even try to access /proc on WIN32 */
+                fd = -1;
+#endif
                 if (fd < 0 && num_lines == REOPEN_AND_COUNT) {
                         /* "filename" is valid only if REOPEN_AND_COUNT */
                         fd = open(filename, O_RDONLY);
@@ -854,7 +876,12 @@ static void print_found(const char *line)
                         match_status = 1;
         }
 
+#if !ENABLE_PLATFORM_MINGW32
         printf("%s%s\n", growline ? growline : "", str);
+#else
+        /* skip newline, we use explicit positioning on WIN32 */
+        printf("%s%s", growline ? growline : "", str);
+#endif
         free(growline);
 }
 #else
@@ -890,7 +917,12 @@ static void print_ascii(const char *str)
                 *p = '\0';
                 print_hilite(buf);
         }
+#if !ENABLE_PLATFORM_MINGW32
         puts(str);
+#else
+        /* skip newline, we use explicit positioning on WIN32 */
+        printf("%s", str);
+#endif
 }
 
 /* Print the buffer */
@@ -900,6 +932,10 @@ static void buffer_print(void)
 
         move_cursor(0, 0);
         for (i = 0; i <= max_displayed_line; i++) {
+#if ENABLE_PLATFORM_MINGW32
+                /* make sure we're on the right line */
+                move_cursor(i+1, 0);
+#endif
                 printf(CLEAR_2_EOL);
                 if (option_mask32 & FLAG_N)
                         print_lineno(buffer[i]);
@@ -1087,9 +1123,13 @@ static void reinitialize(void)
         if (G.winsize_err)
                 printf(ESC"[999;999H" ESC"[6n");
 #endif
+#if ENABLE_PLATFORM_MINGW32
+        printf(ESC"[?1049h");
+#endif
         buffer_fill_and_print();
 }
 
+#if !ENABLE_PLATFORM_MINGW32
 static int64_t getch_nowait(void)
 {
         int rd;
@@ -1151,6 +1191,46 @@ static int64_t getch_nowait(void)
         set_tty_cooked();
         return key64;
 }
+#else
+static int64_t getch_nowait(void)
+{
+        int64_t c;
+
+retry:
+        c = _getch();
+        if (c == 0 || c == 0xe0) {
+                switch (_getch()) {
+                case 0x48:
+                        c = KEYCODE_UP;
+                        break;
+                case 0x50:
+                        c = KEYCODE_DOWN;
+                        break;
+                case 0x49:
+                        c = KEYCODE_PAGEUP;
+                        break;
+                case 0x51:
+                        c = KEYCODE_PAGEDOWN;
+                        break;
+                case 0x47:
+                        c = KEYCODE_HOME;
+                        break;
+                case 0x4f:
+                        c = KEYCODE_END;
+                        break;
+                default:
+                        goto retry;
+                }
+        }
+
+        /* Position cursor if line input is done */
+        if (less_gets_pos >= 0)
+                move_cursor(max_displayed_line + 2, less_gets_pos + 1);
+        fflush_all();
+
+        return c;
+}
+#endif
 
 /* Grab a character from input without requiring the return key.
  * May return KEYCODE_xxx values.
@@ -1791,10 +1871,12 @@ static void keypress_process(int keypress)
                 number_process(keypress);
 }
 
+#if !ENABLE_PLATFORM_MINGW32
 static void sig_catcher(int sig)
 {
         less_exit(- sig);
 }
+#endif
 
 #if ENABLE_FEATURE_LESS_WINCH
 static void sigwinch_handler(int sig UNUSED_PARAM)
@@ -1806,7 +1888,9 @@ static void sigwinch_handler(int sig UNUSED_PARAM)
 int less_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int less_main(int argc, char **argv)
 {
+#if !ENABLE_PLATFORM_MINGW32
         char *tty_name;
+#endif
         int tty_fd;
 
         INIT_G();
@@ -1865,6 +1949,7 @@ int less_main(int argc, char **argv)
         if (option_mask32 & FLAG_TILDE)
                 empty_line_marker = "";
 
+#if !ENABLE_PLATFORM_MINGW32
         /* Some versions of less can survive w/o controlling tty,
          * try to do the same. This also allows to specify an alternative
          * tty via "less 1<>TTY".
@@ -1890,8 +1975,13 @@ int less_main(int argc, char **argv)
         }
         G.kbd_fd_orig_flags = ndelay_on(tty_fd);
         kbd_fd = tty_fd; /* save in a global */
+#else
+        kbd_fd = tty_fd = 0;
+#endif
 
+#if !ENABLE_PLATFORM_MINGW32
         get_termios_and_make_raw(tty_fd, &term_less, &term_orig, TERMIOS_RAW_CRNL_INPUT);
+#endif
 
         IF_FEATURE_LESS_ASK_TERMINAL(G.winsize_err =) get_terminal_width_height(tty_fd, &width, &max_displayed_line);
         /* 20: two tabstops + 4 */