Alien-uv

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libuv/include/uv/win.h  view on Meta::CPAN

      unsigned char last_key_offset;                                          \
      unsigned char last_key_len;                                             \
      WCHAR last_utf16_high_surrogate;                                        \
      INPUT_RECORD last_input_record;                                         \
    } rd;                                                                     \
    struct {                                                                  \
      /* Used for writable TTY handles */                                     \
      /* utf8-to-utf16 conversion state */                                    \
      unsigned int utf8_codepoint;                                            \
      unsigned char utf8_bytes_left;                                          \
      /* eol conversion state */                                              \
      unsigned char previous_eol;                                             \
      /* ansi parser state */                                                 \
      unsigned char ansi_parser_state;                                        \
      unsigned char ansi_csi_argc;                                            \
      unsigned short ansi_csi_argv[4];                                        \
      COORD saved_position;                                                   \
      WORD saved_attributes;                                                  \
    } wr;                                                                     \
  } tty;

#define UV_POLL_PRIVATE_FIELDS                                                \

libuv/src/win/tty.c  view on Meta::CPAN

    tty->tty.rd.last_utf16_high_surrogate = 0;
    memset(&tty->tty.rd.last_input_record, 0, sizeof tty->tty.rd.last_input_record);
  } else {
    /* TTY output specific fields. */
    tty->flags |= UV_HANDLE_WRITABLE;

    /* Init utf8-to-utf16 conversion state. */
    tty->tty.wr.utf8_bytes_left = 0;
    tty->tty.wr.utf8_codepoint = 0;

    /* Initialize eol conversion state */
    tty->tty.wr.previous_eol = 0;

    /* Init ANSI parser state. */
    tty->tty.wr.ansi_parser_state = ANSI_NORMAL;
  }

  return 0;
}


/* Set the default console text attributes based on how the console was

libuv/src/win/tty.c  view on Meta::CPAN

 } while (0)

#define ENSURE_BUFFER_SPACE(wchars_needed)                          \
  if (wchars_needed > ARRAY_SIZE(utf16_buf) - utf16_buf_used) {     \
    FLUSH_TEXT();                                                   \
  }

  /* Cache for fast access */
  unsigned char utf8_bytes_left = handle->tty.wr.utf8_bytes_left;
  unsigned int utf8_codepoint = handle->tty.wr.utf8_codepoint;
  unsigned char previous_eol = handle->tty.wr.previous_eol;
  unsigned char ansi_parser_state = handle->tty.wr.ansi_parser_state;

  /* Store the error here. If we encounter an error, stop trying to do i/o but
   * keep parsing the buffer so we leave the parser in a consistent state. */
  *error = ERROR_SUCCESS;

  utf16_buffer = utf16_buf;

  uv_sem_wait(&uv_tty_output_lock);

libuv/src/win/tty.c  view on Meta::CPAN

      /* We wouldn't mind emitting utf-16 surrogate pairs. Too bad, the windows
       * console doesn't really support UTF-16, so just emit the replacement
       * character. */
      if (utf8_codepoint > 0xffff) {
        utf8_codepoint = UNICODE_REPLACEMENT_CHARACTER;
      }

      if (utf8_codepoint == 0x0a || utf8_codepoint == 0x0d) {
        /* EOL conversion - emit \r\n when we see \n. */

        if (utf8_codepoint == 0x0a && previous_eol != 0x0d) {
          /* \n was not preceded by \r; print \r\n. */
          ENSURE_BUFFER_SPACE(2);
          utf16_buf[utf16_buf_used++] = L'\r';
          utf16_buf[utf16_buf_used++] = L'\n';
        } else if (utf8_codepoint == 0x0d && previous_eol == 0x0a) {
          /* \n was followed by \r; do not print the \r, since the source was
           * either \r\n\r (so the second \r is redundant) or was \n\r (so the
           * \n was processed by the last case and an \r automatically
           * inserted). */
        } else {
          /* \r without \n; print \r as-is. */
          ENSURE_BUFFER_SPACE(1);
          utf16_buf[utf16_buf_used++] = (WCHAR) utf8_codepoint;
        }

        previous_eol = (char) utf8_codepoint;

      } else if (utf8_codepoint <= 0xffff) {
        /* Encode character into utf-16 buffer. */
        ENSURE_BUFFER_SPACE(1);
        utf16_buf[utf16_buf_used++] = (WCHAR) utf8_codepoint;
        previous_eol = 0;
      }
    }
  }

  /* Flush remaining characters */
  FLUSH_TEXT();

  /* Copy cached values back to struct. */
  handle->tty.wr.utf8_bytes_left = utf8_bytes_left;
  handle->tty.wr.utf8_codepoint = utf8_codepoint;
  handle->tty.wr.previous_eol = previous_eol;
  handle->tty.wr.ansi_parser_state = ansi_parser_state;

  uv_sem_post(&uv_tty_output_lock);

  if (*error == STATUS_SUCCESS) {
    return 0;
  } else {
    return -1;
  }