wineps.drv: Add a heuristic to cope with resolution strings of the form…

dlls/wineps.drv/ppd.c

@@ -516,6 +516,70 @@ static char *PSDRV_PPDGetWord(char *str, char **next)
     return ret;
 }
 
+/************************************************************
+ *           parse_resolution
+ *
+ * Helper to extract x and y resolutions from a resolution entry.
+ * Returns TRUE on successful parsing, otherwise FALSE.
+ *
+ * The ppd spec says that entries can either be:
+ *    "nnndpi"
+ * or
+ *    "nnnxmmmdpi"
+ * in the former case return sz.cx == cx.cy == nnn.
+ *
+ * There are broken ppd files out there (notably from Samsung) that
+ * use the form "nnnmmmdpi", so we have to work harder to spot these.
+ * We use a transition from a zero to a non-zero digit as separator
+ * (and fail if we find more than one of these).  We also don't bother
+ * trying to parse "dpi" in case that's missing.
+ */
+static BOOL parse_resolution(const char *str, SIZE *sz)
+{
+    int tmp[2];
+    int *cur;
+    BOOL had_zero;
+    const char *c;
+
+    if(sscanf(str, "%dx%d", tmp, tmp + 1) == 2)
+    {
+        sz->cx = tmp[0];
+        sz->cy = tmp[1];
+        return TRUE;
+    }
+
+    tmp[0] = 0;
+    tmp[1] = -1;
+    cur = tmp;
+    had_zero = FALSE;
+    for(c = str; isdigit(*c); c++)
+    {
+        if(!had_zero || *c == '0')
+        {
+            *cur *= 10;
+            *cur += *c - '0';
+            if(*c == '0')
+                had_zero = TRUE;
+        }
+        else if(cur != tmp)
+            return FALSE;
+        else
+        {
+            cur++;
+            *cur = *c - '0';
+            had_zero = FALSE;
+        }
+    }
+    if(tmp[0] == 0) return FALSE;
+
+    sz->cx = tmp[0];
+    if(tmp[1] != -1)
+        sz->cy = tmp[1];
+    else
+        sz->cy = sz->cx;
+    return TRUE;
+}
+
 /*******************************************************************************
  *	PSDRV_AddSlot
  *
@@ -605,8 +669,14 @@ PPD *PSDRV_ParsePPD(char *fname)
 
 	else if((!strcmp("*DefaultResolution", tuple.key)) ||
 		(!strcmp("*DefaultJCLResolution", tuple.key))) {
-	    sscanf(tuple.value, "%d", &(ppd->DefaultResolution));
-	    TRACE("DefaultResolution = %d\n", ppd->DefaultResolution);
+            SIZE sz;
+            if(parse_resolution(tuple.value, &sz))
+            {
+                TRACE("DefaultResolution %dx%d\n", sz.cx, sz.cy);
+                ppd->DefaultResolution = sz.cx;
+            }
+            else
+                WARN("failed to parse DefaultResolution %s\n", debugstr_a(tuple.value));
 	}
 
 	else if(!strcmp("*Font", tuple.key)) {