1 files changed, 163 insertions, 0 deletions

diff --git a/src/vmware_common.c b/src/vmware_common.c
new file mode 100644
index 0000000..6ef7ca6
--- /dev/null
+++ b/src/vmware_common.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright 2011 VMWare, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Unknown at vmware
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86.h>
+#include "vmware_common.h"
+
+#ifndef HAVE_XORG_SERVER_1_5_0
+#include <xf86_ansic.h>
+#include <xf86_libc.h>
+#endif
+
+static int
+VMWAREParseTopologyElement(ScrnInfoPtr pScrn,
+                           unsigned int output,
+                           const char *elementName,
+                           const char *element,
+                           const char *expectedTerminators,
+                           Bool needTerminator,
+                           unsigned int *outValue)
+{
+   char buf[10] = {0, };
+   size_t i = 0;
+   int retVal = -1;
+   const char *str = element;
+
+   for (i = 0; str[i] >= '0' && str[i] <= '9'; i++);
+   if (i == 0) {
+      xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Output %u: unable to parse %s.\n",
+                 output, elementName);
+      goto exit;
+   }
+
+   strncpy(buf, str, i);
+   *outValue = atoi(buf);
+
+   if (*outValue > (unsigned short)-1) {
+      xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Output %u: %s must be less than %hu.\n",
+                 output, elementName, (unsigned short)-1);
+      goto exit;
+   }
+
+   str += i;
+
+   if (needTerminator || str[0] != '\0') {
+      Bool unexpected = TRUE;
+
+      for (i = 0; i < strlen(expectedTerminators); i++) {
+         if (str[0] == expectedTerminators[i]) {
+            unexpected = FALSE;
+         }
+      }
+
+      if (unexpected) {
+         xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+                    "Output %u: unexpected character '%c' after %s.\n",
+                    output, str[0], elementName);
+         goto exit;
+      } else {
+         str++;
+      }
+   }
+
+   retVal = str - element;
+
+ exit:
+   return retVal;
+}
+
+xXineramaScreenInfo *
+VMWAREParseTopologyString(ScrnInfoPtr pScrn,
+                          const char *topology,
+                          unsigned int *retNumOutputs,
+                          const char info[])
+{
+   xXineramaScreenInfo *extents = NULL;
+   unsigned int numOutputs = 0;
+   const char *str = topology;
+
+   xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Parsing %s topology: Starting...\n",
+              info);
+
+   do {
+      unsigned int x, y, width, height;
+      int i;
+
+      i = VMWAREParseTopologyElement(pScrn, numOutputs, "width", str, "xX", TRUE, &width);
+      if (i == -1) {
+         goto error;
+      }
+      str += i;
+
+      i = VMWAREParseTopologyElement(pScrn, numOutputs, "height", str, "+", TRUE, &height);
+      if (i == -1) {
+         goto error;
+      }
+      str += i;
+
+      i= VMWAREParseTopologyElement(pScrn, numOutputs, "X offset", str, "+", TRUE, &x);
+      if (i == -1) {
+         goto error;
+      }
+      str += i;
+
+      i = VMWAREParseTopologyElement(pScrn, numOutputs, "Y offset", str, ";", FALSE, &y);
+      if (i == -1) {
+         goto error;
+      }
+      str += i;
+
+      xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Output %u: %ux%u+%u+%u\n",
+                 numOutputs, width, height, x, y);
+
+      numOutputs++;
+      extents = realloc(extents, numOutputs * sizeof (xXineramaScreenInfo));
+      extents[numOutputs - 1].x_org = x;
+      extents[numOutputs - 1].y_org = y;
+      extents[numOutputs - 1].width = width;
+      extents[numOutputs - 1].height = height;
+   } while (*str != 0);
+
+   xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Parsing %s topology: Succeeded.\n",
+              info);
+   goto exit;
+
+ error:
+   xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Parsing %s topology: Failed.\n",
+              info);
+
+   free(extents);
+   extents = NULL;
+   numOutputs = 0;
+
+ exit:
+   *retNumOutputs = numOutputs;
+   return extents;
+}