647
+ − 1 /* Selection processing for XEmacs -- common btwn select-x.c and select-gtk.c
+ − 2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ − 3
+ − 4 This file is part of XEmacs.
+ − 5
+ − 6 XEmacs is free software; you can redistribute it and/or modify it
+ − 7 under the terms of the GNU General Public License as published by the
+ − 8 Free Software Foundation; either version 2, or (at your option) any
+ − 9 later version.
+ − 10
+ − 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 14 for more details.
+ − 15
+ − 16 You should have received a copy of the GNU General Public License
+ − 17 along with XEmacs; see the file COPYING. If not, write to
+ − 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 19 Boston, MA 02111-1307, USA. */
+ − 20
+ − 21 /* Synched up with: Not synched with FSF. */
+ − 22
+ − 23 #ifdef PROCESSING_X_CODE
+ − 24 #define XE_ATOM_TYPE Atom
+ − 25 #define XE_ATOM_TO_SYMBOL x_atom_to_symbol
+ − 26 #define XE_SYMBOL_TO_ATOM symbol_to_x_atom
+ − 27 #else
+ − 28 #define XE_ATOM_TYPE GdkAtom
+ − 29 #define XE_ATOM_TO_SYMBOL atom_to_symbol
+ − 30 #define XE_SYMBOL_TO_ATOM symbol_to_gtk_atom
+ − 31 #endif /* PROCESSING_X_CODE */
+ − 32
+ − 33 /* #### These are going to move into Lisp code(!) with the aid of
+ − 34 some new functions I'm working on - ajh */
+ − 35
+ − 36 /* These functions convert from the selection data read from the server into
+ − 37 something that we can use from elisp, and vice versa.
+ − 38
+ − 39 Type: Format: Size: Elisp Type:
+ − 40 ----- ------- ----- -----------
+ − 41 * 8 * String
+ − 42 ATOM 32 1 Symbol
+ − 43 ATOM 32 > 1 Vector of Symbols
+ − 44 * 16 1 Integer
+ − 45 * 16 > 1 Vector of Integers
+ − 46 * 32 1 if <=16 bits: Integer
+ − 47 if > 16 bits: Cons of top16, bot16
+ − 48 * 32 > 1 Vector of the above
+ − 49
3833
+ − 50 NOTE NOTE NOTE:
+ − 51 Format == 32 means that the buffer will be C longs, which need not be
+ − 52 32-bit quantities. See the note in select-x.c (x_get_window_property).
+ − 53
647
+ − 54 When converting a Lisp number to C, it is assumed to be of format 16 if
+ − 55 it is an integer, and of format 32 if it is a cons of two integers.
+ − 56
+ − 57 When converting a vector of numbers from Elisp to C, it is assumed to be
+ − 58 of format 16 if every element in the vector is an integer, and is assumed
+ − 59 to be of format 32 if any element is a cons of two integers.
+ − 60
+ − 61 When converting an object to C, it may be of the form (SYMBOL . <data>)
+ − 62 where SYMBOL is what we should claim that the type is. Format and
+ − 63 representation are as above.
+ − 64
+ − 65 NOTE: Under Mule, when someone shoves us a string without a type, we
3025
+ − 66 set the type to `COMPOUND_TEXT' and automatically convert to Compound
647
+ − 67 Text. If the string has a type, we assume that the user wants the
+ − 68 data sent as-is so we just do "binary" conversion.
+ − 69 */
+ − 70
+ − 71
+ − 72 static Lisp_Object
+ − 73 selection_data_to_lisp_data (struct device *d,
2367
+ − 74 Rawbyte *data,
665
+ − 75 Bytecount size,
647
+ − 76 XE_ATOM_TYPE type,
+ − 77 int format)
+ − 78 {
+ − 79 #ifdef PROCESSING_X_CODE
+ − 80 if (type == DEVICE_XATOM_NULL (d))
+ − 81 return QNULL;
+ − 82
+ − 83 /* Convert any 8-bit data to a string, for compactness. */
+ − 84 else if (format == 8)
+ − 85 return make_ext_string ((Extbyte *) data, size,
+ − 86 type == DEVICE_XATOM_TEXT (d) ||
+ − 87 type == DEVICE_XATOM_COMPOUND_TEXT (d)
+ − 88 ? Qctext : Qbinary);
+ − 89
+ − 90 /* Convert a single atom to a Lisp Symbol.
+ − 91 Convert a set of atoms to a vector of symbols. */
+ − 92 else if (type == XA_ATOM)
+ − 93 #else
+ − 94 if (type == gdk_atom_intern ("NULL", 0))
+ − 95 return QNULL;
+ − 96
+ − 97 /* Convert any 8-bit data to a string, for compactness. */
+ − 98 else if (format == 8)
+ − 99 return make_ext_string ((Extbyte *) data, size,
+ − 100 ((type == gdk_atom_intern ("TEXT", FALSE)) ||
+ − 101 (type == gdk_atom_intern ("COMPOUND_TEXT", FALSE)))
+ − 102 ? Qctext : Qbinary);
+ − 103
+ − 104 /* Convert a single atom to a Lisp Symbol.
+ − 105 Convert a set of atoms to a vector of symbols. */
+ − 106 else if (type == gdk_atom_intern ("ATOM", FALSE))
+ − 107 #endif /* PROCESSING_X_CODE */
+ − 108 {
+ − 109 if (size == sizeof (XE_ATOM_TYPE))
+ − 110 return XE_ATOM_TO_SYMBOL (d, *((XE_ATOM_TYPE *) data));
+ − 111 else
+ − 112 {
665
+ − 113 Elemcount i;
+ − 114 Elemcount len = size / sizeof (XE_ATOM_TYPE);
647
+ − 115 Lisp_Object v = Fmake_vector (make_int (len), Qzero);
+ − 116 for (i = 0; i < len; i++)
+ − 117 Faset (v, make_int (i), XE_ATOM_TO_SYMBOL (d, ((XE_ATOM_TYPE *) data) [i]));
+ − 118 return v;
+ − 119 }
+ − 120 }
+ − 121
+ − 122 /* Convert a single 16 or small 32 bit number to a Lisp Int.
+ − 123 If the number is > 16 bits, convert it to a cons of integers,
+ − 124 16 bits in each half.
+ − 125 */
+ − 126 else if (format == 32 && size == sizeof (long))
+ − 127 return word_to_lisp (((unsigned long *) data) [0]);
+ − 128 else if (format == 16 && size == sizeof (short))
+ − 129 return make_int ((int) (((unsigned short *) data) [0]));
+ − 130
+ − 131 /* Convert any other kind of data to a vector of numbers, represented
+ − 132 as above (as an integer, or a cons of two 16 bit integers).
+ − 133
+ − 134 #### Perhaps we should return the actual type to lisp as well.
+ − 135
+ − 136 (x-get-selection-internal 'PRIMARY 'LINE_NUMBER)
+ − 137 ==> [4 4]
+ − 138
+ − 139 and perhaps it should be
+ − 140
+ − 141 (x-get-selection-internal 'PRIMARY 'LINE_NUMBER)
+ − 142 ==> (SPAN . [4 4])
+ − 143
+ − 144 Right now the fact that the return type was SPAN is discarded before
+ − 145 lisp code gets to see it.
+ − 146 */
+ − 147 else if (format == 16)
+ − 148 {
665
+ − 149 Elemcount i;
647
+ − 150 Lisp_Object v = make_vector (size / 4, Qzero);
+ − 151 for (i = 0; i < size / 4; i++)
+ − 152 {
+ − 153 int j = (int) ((unsigned short *) data) [i];
+ − 154 Faset (v, make_int (i), make_int (j));
+ − 155 }
+ − 156 return v;
+ − 157 }
+ − 158 else
+ − 159 {
665
+ − 160 Elemcount i;
647
+ − 161 Lisp_Object v = make_vector (size / 4, Qzero);
+ − 162 for (i = 0; i < size / 4; i++)
+ − 163 {
+ − 164 unsigned long j = ((unsigned long *) data) [i];
+ − 165 Faset (v, make_int (i), word_to_lisp (j));
+ − 166 }
+ − 167 return v;
+ − 168 }
+ − 169 }
+ − 170
+ − 171
+ − 172 static void
+ − 173 lisp_data_to_selection_data (struct device *d,
+ − 174 Lisp_Object obj,
2367
+ − 175 Rawbyte **data_ret,
647
+ − 176 XE_ATOM_TYPE *type_ret,
665
+ − 177 Bytecount *size_ret,
647
+ − 178 int *format_ret)
+ − 179 {
+ − 180 Lisp_Object type = Qnil;
+ − 181
+ − 182 if (CONSP (obj) && SYMBOLP (XCAR (obj)))
+ − 183 {
+ − 184 type = XCAR (obj);
+ − 185 obj = XCDR (obj);
+ − 186 if (CONSP (obj) && NILP (XCDR (obj)))
+ − 187 obj = XCAR (obj);
+ − 188 }
+ − 189
+ − 190 if (EQ (obj, QNULL) || (EQ (type, QNULL)))
+ − 191 { /* This is not the same as declining */
+ − 192 *format_ret = 32;
+ − 193 *size_ret = 0;
+ − 194 *data_ret = 0;
+ − 195 type = QNULL;
+ − 196 }
+ − 197 else if (STRINGP (obj))
+ − 198 {
+ − 199 const Extbyte *extval;
665
+ − 200 Bytecount extvallen;
647
+ − 201
+ − 202 TO_EXTERNAL_FORMAT (LISP_STRING, obj,
+ − 203 ALLOCA, (extval, extvallen),
+ − 204 (NILP (type) ? Qctext : Qbinary));
+ − 205 *format_ret = 8;
+ − 206 *size_ret = extvallen;
2367
+ − 207 *data_ret = xnew_rawbytes (*size_ret);
647
+ − 208 memcpy (*data_ret, extval, *size_ret);
+ − 209 #ifdef MULE
+ − 210 if (NILP (type)) type = QCOMPOUND_TEXT;
+ − 211 #else
+ − 212 if (NILP (type)) type = QSTRING;
+ − 213 #endif
+ − 214 }
+ − 215 else if (CHARP (obj))
+ − 216 {
867
+ − 217 Ibyte buf[MAX_ICHAR_LEN];
647
+ − 218 Bytecount len;
+ − 219 const Extbyte *extval;
665
+ − 220 Bytecount extvallen;
647
+ − 221
+ − 222 *format_ret = 8;
867
+ − 223 len = set_itext_ichar (buf, XCHAR (obj));
647
+ − 224 TO_EXTERNAL_FORMAT (DATA, (buf, len),
+ − 225 ALLOCA, (extval, extvallen),
+ − 226 Qctext);
+ − 227 *size_ret = extvallen;
2367
+ − 228 *data_ret = xnew_rawbytes (*size_ret);
647
+ − 229 memcpy (*data_ret, extval, *size_ret);
+ − 230 #ifdef MULE
+ − 231 if (NILP (type)) type = QCOMPOUND_TEXT;
+ − 232 #else
+ − 233 if (NILP (type)) type = QSTRING;
+ − 234 #endif
+ − 235 }
+ − 236 else if (SYMBOLP (obj))
+ − 237 {
+ − 238 *format_ret = 32;
+ − 239 *size_ret = 1;
2367
+ − 240 *data_ret = xnew_rawbytes (sizeof (XE_ATOM_TYPE) + 1);
647
+ − 241 (*data_ret) [sizeof (XE_ATOM_TYPE)] = 0;
+ − 242 (*(XE_ATOM_TYPE **) data_ret) [0] = XE_SYMBOL_TO_ATOM (d, obj, 0);
+ − 243 if (NILP (type)) type = QATOM;
+ − 244 }
+ − 245 else if (INTP (obj) &&
+ − 246 XINT (obj) <= 0x7FFF &&
+ − 247 XINT (obj) >= -0x8000)
+ − 248 {
+ − 249 *format_ret = 16;
+ − 250 *size_ret = 1;
2367
+ − 251 *data_ret = xnew_rawbytes (sizeof (short) + 1);
647
+ − 252 (*data_ret) [sizeof (short)] = 0;
+ − 253 (*(short **) data_ret) [0] = (short) XINT (obj);
+ − 254 if (NILP (type)) type = QINTEGER;
+ − 255 }
+ − 256 else if (INTP (obj) || CONSP (obj))
+ − 257 {
+ − 258 *format_ret = 32;
+ − 259 *size_ret = 1;
2367
+ − 260 *data_ret = xnew_rawbytes (sizeof (long) + 1);
647
+ − 261 (*data_ret) [sizeof (long)] = 0;
+ − 262 (*(unsigned long **) data_ret) [0] = lisp_to_word (obj);
+ − 263 if (NILP (type)) type = QINTEGER;
+ − 264 }
+ − 265 else if (VECTORP (obj))
+ − 266 {
+ − 267 /* Lisp Vectors may represent a set of ATOMs;
+ − 268 a set of 16 or 32 bit INTEGERs;
+ − 269 or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...]
+ − 270 */
665
+ − 271 Elemcount i;
647
+ − 272
+ − 273 if (SYMBOLP (XVECTOR_DATA (obj) [0]))
+ − 274 /* This vector is an ATOM set */
+ − 275 {
+ − 276 if (NILP (type)) type = QATOM;
+ − 277 *size_ret = XVECTOR_LENGTH (obj);
+ − 278 *format_ret = 32;
2367
+ − 279 *data_ret = xnew_rawbytes ((*size_ret) * sizeof (XE_ATOM_TYPE));
647
+ − 280 for (i = 0; i < *size_ret; i++)
+ − 281 if (SYMBOLP (XVECTOR_DATA (obj) [i]))
+ − 282 (*(XE_ATOM_TYPE **) data_ret) [i] =
+ − 283 XE_SYMBOL_TO_ATOM (d, XVECTOR_DATA (obj) [i], 0);
+ − 284 else
+ − 285 syntax_error
+ − 286 ("all elements of the vector must be of the same type", obj);
+ − 287 }
+ − 288 #if 0 /* #### MULTIPLE doesn't work yet */
+ − 289 else if (VECTORP (XVECTOR_DATA (obj) [0]))
+ − 290 /* This vector is an ATOM_PAIR set */
+ − 291 {
+ − 292 if (NILP (type)) type = QATOM_PAIR;
+ − 293 *size_ret = XVECTOR_LENGTH (obj);
+ − 294 *format_ret = 32;
2367
+ − 295 *data_ret =
+ − 296 xnew_rawbytes ((*size_ret) * sizeof (XE_ATOM_TYPE) * 2);
647
+ − 297 for (i = 0; i < *size_ret; i++)
+ − 298 if (VECTORP (XVECTOR_DATA (obj) [i]))
+ − 299 {
+ − 300 Lisp_Object pair = XVECTOR_DATA (obj) [i];
+ − 301 if (XVECTOR_LENGTH (pair) != 2)
+ − 302 syntax_error
+ − 303 ("elements of the vector must be vectors of exactly two elements", pair);
+ − 304
+ − 305 (*(XE_ATOM_TYPE **) data_ret) [i * 2] =
+ − 306 XE_SYMBOL_TO_ATOM (d, XVECTOR_DATA (pair) [0], 0);
+ − 307 (*(XE_ATOM_TYPE **) data_ret) [(i * 2) + 1] =
+ − 308 XE_SYMBOL_TO_ATOM (d, XVECTOR_DATA (pair) [1], 0);
+ − 309 }
+ − 310 else
+ − 311 syntax_error
+ − 312 ("all elements of the vector must be of the same type", obj);
+ − 313 }
+ − 314 #endif
+ − 315 else
+ − 316 /* This vector is an INTEGER set, or something like it */
+ − 317 {
+ − 318 *size_ret = XVECTOR_LENGTH (obj);
+ − 319 if (NILP (type)) type = QINTEGER;
+ − 320 *format_ret = 16;
+ − 321 for (i = 0; i < *size_ret; i++)
+ − 322 if (CONSP (XVECTOR_DATA (obj) [i]))
+ − 323 *format_ret = 32;
+ − 324 else if (!INTP (XVECTOR_DATA (obj) [i]))
+ − 325 syntax_error
+ − 326 ("all elements of the vector must be integers or conses of integers", obj);
+ − 327
2367
+ − 328 *data_ret = xnew_rawbytes (*size_ret * (*format_ret/8));
647
+ − 329 for (i = 0; i < *size_ret; i++)
+ − 330 if (*format_ret == 32)
+ − 331 (*((unsigned long **) data_ret)) [i] =
+ − 332 lisp_to_word (XVECTOR_DATA (obj) [i]);
+ − 333 else
+ − 334 (*((unsigned short **) data_ret)) [i] =
+ − 335 (unsigned short) lisp_to_word (XVECTOR_DATA (obj) [i]);
+ − 336 }
+ − 337 }
+ − 338 else
+ − 339 invalid_argument ("unrecognized selection data", obj);
+ − 340
+ − 341 *type_ret = XE_SYMBOL_TO_ATOM (d, type, 0);
+ − 342 }
+ − 343
