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221
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1 /* mswindows selection processing for XEmacs
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2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not synched with FSF. */
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22
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23 /* Authorship:
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24
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25 Written by Kevin Gallo for FSF Emacs.
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272
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26 Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0.
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221
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27 */
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28
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29
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30 #include <config.h>
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31 #include "lisp.h"
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32
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33 #include "console-msw.h"
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34
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35 DEFUN ("mswindows-set-clipboard", Fmswindows_set_clipboard, 1, 1, 0, /*
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36 Copy STRING to the mswindows clipboard.
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37 */
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38 (string))
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39 {
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40 int rawsize, size, i;
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41 unsigned char *src, *dst, *next;
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42 HGLOBAL h = NULL;
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43
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231
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44 CHECK_STRING (string);
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221
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45
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46 /* Calculate size with LFs converted to CRLFs because
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47 * CF_TEXT format uses CRLF delimited ASCIIZ */
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48 src = XSTRING_DATA (string);
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49 size = rawsize = XSTRING_LENGTH (string) + 1;
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50 for (i=0; i<rawsize; i++)
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51 if (src[i] == '\n')
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52 size++;
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53
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54 if (!OpenClipboard (NULL))
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55 return Qnil;
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56
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57 if (!EmptyClipboard () ||
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58 (h = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, size)) == NULL ||
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59 (dst = (unsigned char *) GlobalLock (h)) == NULL)
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60 {
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61 if (h != NULL) GlobalFree (h);
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62 CloseClipboard ();
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63 return Qnil;
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64 }
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65
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66 /* Convert LFs to CRLFs */
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67 do
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68 {
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69 /* copy next line or remaining bytes including '\0' */
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70 next = memccpy (dst, src, '\n', rawsize);
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71 if (next)
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72 {
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73 /* copied one line ending with '\n' */
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74 int copied = next - dst;
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75 rawsize -= copied;
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76 src += copied;
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77 /* insert '\r' before '\n' */
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78 next[-1] = '\r';
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79 next[0] = '\n';
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80 dst = next+1;
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81 }
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82 }
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83 while (next);
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84
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85 GlobalUnlock (h);
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86
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249
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87 i = (SetClipboardData (CF_TEXT, h) != NULL);
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221
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88
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89 CloseClipboard ();
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90 GlobalFree (h);
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91
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92 return i ? Qt : Qnil;
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93 }
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94
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95 DEFUN ("mswindows-get-clipboard", Fmswindows_get_clipboard, 0, 0, 0, /*
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96 Return the contents of the mswindows clipboard.
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97 */
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98 ())
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99 {
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100 HANDLE h;
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101 unsigned char *src, *dst, *next;
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102 Lisp_Object ret = Qnil;
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103
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104 if (!OpenClipboard (NULL))
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105 return Qnil;
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106
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107 if ((h = GetClipboardData (CF_TEXT)) != NULL &&
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108 (src = (unsigned char *) GlobalLock (h)) != NULL)
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109 {
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110 int i;
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111 int size, rawsize;
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112 size = rawsize = strlen (src);
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113
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114 for (i=0; i<rawsize; i++)
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115 if (src[i] == '\r' && src[i+1] == '\n')
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116 size--;
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117
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118 /* Convert CRLFs to LFs */
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119 ret = make_uninit_string (size);
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120 dst = XSTRING_DATA (ret);
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121 do
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122 {
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123 /* copy next line or remaining bytes excluding '\0' */
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278
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124 next = memccpy (dst, src, '\r', rawsize);
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221
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125 if (next)
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126 {
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127 /* copied one line ending with '\r' */
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128 int copied = next - dst;
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129 rawsize -= copied;
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130 src += copied;
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131 if (*src == '\n')
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132 dst += copied - 1; /* overwrite '\r' */
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133 else
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134 dst += copied;
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135 }
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136 }
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137 while (next);
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138
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139 GlobalUnlock (h);
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140 }
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141
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142 CloseClipboard ();
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143
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144 return ret;
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145 }
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146
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286
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147 DEFUN ("mswindows-selection-exists-p", Fmswindows_selection_exists_p, 0, 0, 0, /*
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288
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148 Whether there is an MS-Windows selection.
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286
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149 */
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150 ())
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151 {
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152 return IsClipboardFormatAvailable (CF_TEXT) ? Qt : Qnil;
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153 }
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154
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155 DEFUN ("mswindows-delete-selection", Fmswindows_delete_selection, 0, 0, 0, /*
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288
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156 Remove the current MS-Windows selection from the clipboard.
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286
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157 */
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158 ())
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159 {
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160 return EmptyClipboard () ? Qt : Qnil;
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161 }
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162
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221
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163
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164 /************************************************************************/
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165 /* initialization */
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166 /************************************************************************/
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167
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168 void
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169 syms_of_select_mswindows (void)
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170 {
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171 DEFSUBR (Fmswindows_set_clipboard);
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172 DEFSUBR (Fmswindows_get_clipboard);
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286
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173 DEFSUBR (Fmswindows_selection_exists_p);
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174 DEFSUBR (Fmswindows_delete_selection);
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221
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175 }
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176
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177 void
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178 vars_of_select_mswindows (void)
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179 {
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180 }
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