Clipboard routines (pdcclip.c) for Plan9 and SDL1 were simple in-memory functions, same as the ones currently used for DOS, DOSVGA, VT, and framebuffer.

Author: Bill-Gray

plan9/pdcclip.c

@@ -1,67 +1 @@
-#include <stdlib.h>
-#include <string.h>
-#include <curspriv.h>
-#include "pdcplan9.h"
-
-
-static char *clip = NULL;
-
-int PDC_getclipboard(char **sp, long *np)
-{
-	long n;
-
-	PDC_LOG(("PDC_getclipboard() - called\n"));
-	if (!clip)
-		return PDC_CLIP_EMPTY;
-
-	n = strlen(clip);
-	if ((*sp = malloc(n + 1)) == NULL)
-		return PDC_CLIP_MEMORY_ERROR;
-
-	memmove(*sp, clip, n);
-	*np = n;
-
-	return PDC_CLIP_SUCCESS;
-}
-
-
-int PDC_setclipboard(const char *s, long n)
-{
-	PDC_LOG(("PDC_setclipboard() - called\n"));
-	if (clip)
-	{
-		free(clip);
-		clip = NULL;
-	}
-	if (s)
-	{
-		if ((clip = malloc(n + 1)) == NULL)
-			return PDC_CLIP_MEMORY_ERROR;
-		memmove(clip, s, n);
-		clip[n] = 0;
-	}
-
-	return PDC_CLIP_SUCCESS;
-}
-
-
-int PDC_freeclipboard(char *s)
-{
-	PDC_LOG(("PDC_freeclipboard() - called\n"));
-	free(s);
-
-	return PDC_CLIP_SUCCESS;
-}
-
-
-int PDC_clearclipboard(void)
-{
-	PDC_LOG(("PDC_clearclipboard() - called\n"));
-	if (clip)
-	{
-		free(clip);
-		clip = NULL;
-	}
-
-	return PDC_CLIP_SUCCESS;
-}
+#include "../common/pdcclip.c"

sdl1/pdcclip.c

@@ -1,131 +1 @@
-/* PDCurses */
-
-#include "pdcsdl.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-/*man-start**************************************************************
-
-clipboard
----------
-
-### Synopsis
-
-    int PDC_getclipboard(char **contents, long *length);
-    int PDC_setclipboard(const char *contents, long length);
-    int PDC_freeclipboard(char *contents);
-    int PDC_clearclipboard(void);
-
-### Description
-
-   PDC_getclipboard() gets the textual contents of the system's
-   clipboard. This function returns the contents of the clipboard in the
-   contents argument. It is the responsibility of the caller to free the
-   memory returned, via PDC_freeclipboard(). The length of the clipboard
-   contents is returned in the length argument.
-
-   PDC_setclipboard copies the supplied text into the system's
-   clipboard, emptying the clipboard prior to the copy.
-
-   PDC_clearclipboard() clears the internal clipboard.
-
-### Return Values
-
-   indicator of success/failure of call.
-   PDC_CLIP_SUCCESS        the call was successful
-   PDC_CLIP_MEMORY_ERROR   unable to allocate sufficient memory for
-                           the clipboard contents
-   PDC_CLIP_EMPTY          the clipboard contains no text
-   PDC_CLIP_ACCESS_ERROR   no clipboard support
-
-### Portability
-                             X/Open  ncurses  NetBSD
-    PDC_getclipboard            -       -       -
-    PDC_setclipboard            -       -       -
-    PDC_freeclipboard           -       -       -
-    PDC_clearclipboard          -       -       -
-
-**man-end****************************************************************/
-
-/* global clipboard contents, should be NULL if none set */
-
-static char *pdc_SDL_clipboard = NULL;
-
-int PDC_getclipboard(char **contents, long *length)
-{
-    int len;
-
-    PDC_LOG(("PDC_getclipboard() - called\n"));
-
-    if (!pdc_SDL_clipboard)
-        return PDC_CLIP_EMPTY;
-
-    len = strlen(pdc_SDL_clipboard);
-    if ((*contents = malloc(len + 1)) == NULL)
-        return PDC_CLIP_MEMORY_ERROR;
-
-    strcpy(*contents, pdc_SDL_clipboard);
-    *length = len;
-
-    return PDC_CLIP_SUCCESS;
-}
-
-int PDC_setclipboard(const char *contents, long length)
-{
-    PDC_LOG(("PDC_setclipboard() - called\n"));
-
-    if (pdc_SDL_clipboard)
-    {
-        free(pdc_SDL_clipboard);
-        pdc_SDL_clipboard = NULL;
-    }
-
-    if (contents)
-    {
-        if ((pdc_SDL_clipboard = malloc(length + 1)) == NULL)
-            return PDC_CLIP_MEMORY_ERROR;
-
-        strcpy(pdc_SDL_clipboard, contents);
-    }
-
-    return PDC_CLIP_SUCCESS;
-}
-
-int PDC_freeclipboard(char *contents)
-{
-    PDC_LOG(("PDC_freeclipboard() - called\n"));
-
-    /* should we also free empty the system clipboard? probably not */
-
-    if (contents)
-    {
-        /* NOTE: We free the memory, but we can not set caller's pointer
-           to NULL, so if caller calls again then will try to access
-           free'd memory.  We 1st overwrite memory with a string so if
-           caller tries to use free memory they won't get what they
-           expect & hopefully notice. */
-
-        /* memset(contents, 0xFD, strlen(contents)); */
-
-        if (strlen(contents) >= strlen("PDCURSES"))
-            strcpy(contents, "PDCURSES");
-
-        free(contents);
-    }
-
-    return PDC_CLIP_SUCCESS;
-}
-
-int PDC_clearclipboard(void)
-{
-    PDC_LOG(("PDC_clearclipboard() - called\n"));
-
-    if (pdc_SDL_clipboard)
-    {
-        free(pdc_SDL_clipboard);
-        pdc_SDL_clipboard = NULL;
-    }
-
-    return PDC_CLIP_SUCCESS;
-}
+#include "../common/pdcclip.c"