From 583f5d53e6ec09f57efdb4f74fbf8be794883e41 Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Thu, 9 Jul 1998 14:02:15 +0000 Subject: [PATCH] (Vclipboard_coding_system): New variable. (set_clipboard_data, set_clipboard_data): New parameter Raw determines whether CRLF <-> NL translation needs to be done. All callers changed. (Fw16_set_clipboard_data): Encode the text using Vclipboard_coding_system, if necessary. (Fw16_get_clipboard_data): Decode the text using Vclipboard_coding_system, if necessary. (syms_of_win16select): DEFVAR Vclipboard_coding_system and staticpro it. --- src/w16select.c | 166 +++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 137 insertions(+), 29 deletions(-) diff --git a/src/w16select.c b/src/w16select.c index a181c8466b6..769835e1562 100644 --- a/src/w16select.c +++ b/src/w16select.c @@ -37,6 +37,9 @@ Boston, MA 02111-1307, USA. */ #include "dispextern.h" /* frame.h seems to want this */ #include "frame.h" /* Need this to get the X window of selected_frame */ #include "blockinput.h" +#include "buffer.h" +#include "charset.h" +#include "coding.h" /* If ever some function outside this file will need to call any clipboard-related function, the following prototypes and constants @@ -57,14 +60,18 @@ Boston, MA 02111-1307, USA. */ unsigned identify_winoldap_version (void); unsigned open_clipboard (void); unsigned empty_clipboard (void); -unsigned set_clipboard_data (unsigned, void *, unsigned); +unsigned set_clipboard_data (unsigned, void *, unsigned, int); unsigned get_clipboard_data_size (unsigned); -unsigned get_clipboard_data (unsigned, void *, unsigned); +unsigned get_clipboard_data (unsigned, void *, unsigned, int); unsigned close_clipboard (void); unsigned clipboard_compact (unsigned); Lisp_Object QCLIPBOARD, QPRIMARY; +/* Coding system for communicating with other Windows programs via the + clipboard. */ +static Lisp_Object Vclipboard_coding_system; + /* The segment address and the size of the buffer in low memory used to move data between us and WinOldAp module. */ @@ -216,10 +223,11 @@ free_xfer_buf () /* Copy data into the clipboard, return non-zero if successfull. */ unsigned -set_clipboard_data (Format, Data, Size) +set_clipboard_data (Format, Data, Size, Raw) unsigned Format; void *Data; unsigned Size; + int Raw; { __dpmi_regs regs; unsigned truelen; @@ -233,11 +241,15 @@ set_clipboard_data (Format, Data, Size) standard CF_TEXT clipboard format uses CRLF line endings, while Emacs uses just LF internally). */ truelen = Size; - /* avoid using strchr because it recomputes the length everytime */ - while ((dp = memchr (dp, '\n', Size - (dp - dstart))) != 0) + + if (!Raw) { - truelen++; - dp++; + /* avoid using strchr because it recomputes the length everytime */ + while ((dp = memchr (dp, '\n', Size - (dp - dstart))) != 0) + { + truelen++; + dp++; + } } if (clipboard_compact (truelen) < truelen) @@ -246,15 +258,20 @@ set_clipboard_data (Format, Data, Size) if ((xbuf_addr = alloc_xfer_buf (truelen)) == 0) return 0; - /* Move the buffer into the low memory, convert LF into CR-LF pairs. */ - dp = Data; - buf_offset = xbuf_addr; - _farsetsel (_dos_ds); - while (Size--) + /* Move the buffer into the low memory, convert LF into CR-LF if needed. */ + if (Raw) + dosmemput (Data, truelen, __tb); + else { - if (*dp == '\n') - _farnspokeb (buf_offset++, '\r'); - _farnspokeb (buf_offset++, *dp++); + dp = Data; + buf_offset = xbuf_addr; + _farsetsel (_dos_ds); + while (Size--) + { + if (*dp == '\n') + _farnspokeb (buf_offset++, '\r'); + _farnspokeb (buf_offset++, *dp++); + } } /* Calls Int 2Fh/AX=1703h with: @@ -299,10 +316,11 @@ get_clipboard_data_size (Format) Warning: this doesn't check whether DATA has enough space to hold SIZE bytes. */ unsigned -get_clipboard_data (Format, Data, Size) +get_clipboard_data (Format, Data, Size, Raw) unsigned Format; void *Data; unsigned Size; + int Raw; { __dpmi_regs regs; unsigned datalen = 0; @@ -331,13 +349,14 @@ get_clipboard_data (Format, Data, Size) __dpmi_int(0x2f, ®s); if (regs.x.ax != 0) { - /* Copy data from low memory, remove CR characters if before LF. */ + /* Copy data from low memory, remove CR + characters before LF if needed. */ _farsetsel (_dos_ds); while (Size--) { register unsigned char c = _farnspeekb (xbuf_addr++); - if ((*dp++ = c) == '\r' && _farnspeekb (xbuf_addr) == '\n') + if ((*dp++ = c) == '\r' && !Raw && _farnspeekb (xbuf_addr) == '\n') { dp--; *dp++ = '\n'; @@ -401,7 +420,10 @@ DEFUN ("w16-set-clipboard-data", Fw16_set_clipboard_data, Sw16_set_clipboard_dat { int ok = 1, ok1 = 1; int nbytes; - unsigned char *src; + unsigned char *src, *dst = NULL; + int charsets[MAX_CHARSET + 1]; + int num; + int no_crlf_conversion; CHECK_STRING (string, 0); @@ -414,14 +436,50 @@ DEFUN ("w16-set-clipboard-data", Fw16_set_clipboard_data, Sw16_set_clipboard_dat BLOCK_INPUT; - nbytes = XSTRING (string)->size + 1; + nbytes = STRING_BYTES (XSTRING (string)) + 1; src = XSTRING (string)->data; - + + /* Since we are now handling multilingual text, we must consider + encoding text for the clipboard. */ + + bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); + num = ((nbytes <= 2 /* Check the possibility of short cut. */ + || NILP (buffer_defaults.enable_multibyte_characters)) + ? 0 + : find_charset_in_str (src, nbytes, charsets, Qnil, 1)); + + if (!num || (num == 1 && charsets[CHARSET_ASCII])) + { + /* No multibyte character in OBJ. We need not encode it, but we + will have to convert it to DOS CR-LF style. */ + no_crlf_conversion = 0; + } + else + { + /* We must encode contents of STRING according to what + clipboard-coding-system specifies. */ + int bufsize; + struct coding_system coding; + unsigned char *htext2; + + setup_coding_system + (Fcheck_coding_system (Vclipboard_coding_system), &coding); + coding.mode |= CODING_MODE_LAST_BLOCK; + Vlast_coding_system_used = coding.symbol; + bufsize = encoding_buffer_size (&coding, nbytes); + dst = (unsigned char *) xmalloc (bufsize); + encode_coding (&coding, src, dst, nbytes, bufsize); + no_crlf_conversion = 1; + } + if (!open_clipboard ()) goto error; - ok = empty_clipboard () && (ok1 = set_clipboard_data (CF_TEXT, src, nbytes)); - + ok = empty_clipboard () + && (ok1 = set_clipboard_data (CF_TEXT, src, nbytes, no_crlf_conversion)); + + if (!no_crlf_conversion) + Vlast_coding_system_used = Qraw_text; close_clipboard (); if (ok) goto unblock; @@ -431,6 +489,8 @@ DEFUN ("w16-set-clipboard-data", Fw16_set_clipboard_data, Sw16_set_clipboard_dat ok = 0; unblock: + if (dst) + xfree (dst); UNBLOCK_INPUT; /* Notify user if the text is too large to fit into DOS memory. @@ -457,10 +517,9 @@ DEFUN ("w16-get-clipboard-data", Fw16_get_clipboard_data, Sw16_get_clipboard_dat unsigned data_size, truelen; unsigned char *htext; Lisp_Object ret = Qnil; - - if (!NILP (frame)) - CHECK_LIVE_FRAME (frame, 0); - + int no_crlf_conversion; + int require_encoding = 0; + if (NILP (frame)) frame = Fselected_frame (); @@ -480,10 +539,51 @@ DEFUN ("w16-get-clipboard-data", Fw16_get_clipboard_data, Sw16_get_clipboard_dat /* need to know final size after '\r' chars are removed because we can't change the string size manually, and doing an extra copy is silly */ - if ((truelen = get_clipboard_data (CF_TEXT, htext, data_size)) == 0) + if ((truelen = get_clipboard_data (CF_TEXT, htext, data_size, 0)) == 0) goto closeclip; - ret = make_string (htext, truelen); + /* Do we need to decode it? */ + if (! NILP (buffer_defaults.enable_multibyte_characters)) + { + /* If the clipboard data contains any 8-bit Latin-1 code, we + need to decode it. */ + int i; + + for (i = 0; i < truelen; i++) + { + if (htext[i] >= 0x80) + { + require_encoding = 1; + break; + } + } + } + if (require_encoding) + { + int bufsize; + unsigned char *buf; + struct coding_system coding; + + setup_coding_system + (Fcheck_coding_system (Vclipboard_coding_system), &coding); + coding.mode |= CODING_MODE_LAST_BLOCK; + truelen = get_clipboard_data (CF_TEXT, htext, data_size, 1); + bufsize = decoding_buffer_size (&coding, truelen); + buf = (unsigned char *) xmalloc (bufsize); + decode_coding (&coding, htext, buf, truelen, bufsize); + truelen = (coding.fake_multibyte + ? multibyte_chars_in_text (buf, coding.produced) + : coding.produced_char); + ret = make_string_from_bytes ((char *) buf, truelen, coding.produced); + xfree (buf); + Vlast_coding_system_used = coding.symbol; + } + else + { + ret = make_unibyte_string ((char *) htext, truelen); + Vlast_coding_system_used = Qraw_text; + } + xfree (htext); closeclip: @@ -549,6 +649,14 @@ syms_of_win16select () defsubr (&Sw16_get_clipboard_data); defsubr (&Sx_selection_exists_p); + DEFVAR_LISP ("clipboard-coding-system", &Vclipboard_coding_system, + "Coding system for communicating with other X clients.\n\ +When sending or receiving text via cut_buffer, selection, and clipboard,\n\ +the text is encoded or decoded by this coding system.\n\ +A default value is `iso-latin-1-dos'"); + Vclipboard_coding_system=intern ("iso-latin-1-dos"); + staticpro(&Vclipboard_coding_system); + QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); } -- 2.39.2