Changeset 15598 for gsdl/trunk/lib/dbclass.cpp

Timestamp:

2008-05-20T15:00:37+12:00 (16 years ago)

Author:

mdewsnip

Message:

(Adding new DB support) Moved some non-GDBM-specific code out of gdbmclass and into dbclass.

File:

• gsdl/trunk/lib/dbclass.cpp (modified) (1 diff)

gsdl/trunk/lib/dbclass.cpp

@@ -25 +25 @@
 
 #include "dbclass.h"
+#include "OIDtools.h"
 
 
 dbclass::~dbclass() {}
+
+
+// replaces the .fc, .lc, .pr, .rt, .ns and .ps syntax (first child, 
+// last child, parent, root, next sibling, previous sibling) 
+// it expects child, parent, etc. to exist if syntax has been used
+// so you should test before using
+text_t dbclass::translate_OID (const text_t &inOID, infodbclass &info)
+{
+  if (inOID.size() < 4) return inOID;
+  if (findchar (inOID.begin(), inOID.end(), '.') == inOID.end()) return inOID;
+
+  text_t OID = inOID;
+  text_tarray tailarray;
+  text_t tail = substr (OID.end()-3, OID.end());
+  if (tail == ".rt") {
+    get_top (inOID, OID);
+    return OID;
+  }
+  while (tail == ".fc" || tail == ".lc" || tail == ".pr" || 
+     tail == ".ns" || tail == ".ps") {
+    tailarray.push_back(tail);
+    OID.erase (OID.end()-3, OID.end());
+    tail = substr (OID.end()-3, OID.end());
+    if (tail == ".rt") {
+      get_top (inOID, OID);
+      return OID;
+    }
+  }
+
+  if (tailarray.empty()) return inOID;
+  text_tarray::const_iterator begin = tailarray.begin();
+  text_tarray::const_iterator here = tailarray.end() - 1;
+
+  while (here >= begin) {
+
+    if (*here == ".fc")
+      get_first_child (OID, info);
+    else if (*here == ".lc")
+      get_last_child (OID, info);
+    else if (*here == ".pr")
+      OID = get_parent (OID);
+    else if (*here == ".ns")
+      get_next_sibling (OID, info);
+    else if (*here == ".ps")
+      get_previous_sibling (OID, info);
+    
+    if (here == begin)
+      break;
+    --here;
+  }
+
+  return OID;
+}
+
+
+void dbclass::get_first_child (text_t &OID, infodbclass &info)
+{
+  text_t firstchild;
+  if (getinfo (OID, info)) {
+    text_t &contains = info["contains"];
+    if (!contains.empty()) {
+      text_t parent = OID;
+      getdelimitstr (contains.begin(), contains.end(), ';', firstchild);
+      if (firstchild.empty()) OID = contains;
+      else OID = firstchild;
+      if (*(OID.begin()) == '"') translate_parent (OID, parent);
+    }
+  }
+}
+
+
+void dbclass::get_last_child (text_t &OID, infodbclass &info)
+{
+  text_tarray children;
+  if (getinfo (OID, info)) {
+    text_t &contains = info["contains"];
+    if (!contains.empty()) {
+      text_t parent = OID;
+      splitchar (contains.begin(), contains.end(), ';', children);
+      OID = children.back();
+      if (*(OID.begin()) == '"') translate_parent (OID, parent);
+    }
+  }
+}
+
+  
+void dbclass::get_next_sibling (text_t &OID, infodbclass &info)
+{
+  text_tarray siblings;
+  text_t parent = get_parent (OID);
+         
+  if (getinfo (parent, info)) {
+    text_t &contains = info["contains"];
+    if (!contains.empty()) {
+      splitchar (contains.begin(), contains.end(), ';', siblings);
+      text_tarray::const_iterator here = siblings.begin();
+      text_tarray::const_iterator end = siblings.end();
+      text_t shrunk_OID = OID;
+      shrink_parent (shrunk_OID);
+      while (here != end) {
+    if (*here == shrunk_OID && (here+1 != end)) {
+      OID = *(here+1);
+      if (*(OID.begin()) == '"') translate_parent (OID, parent);
+      break;
+    }
+    ++here;
+      }
+    }
+  }
+}
+
+
+void dbclass::get_previous_sibling (text_t &OID, infodbclass &info)
+{
+  text_tarray siblings;
+  text_t parent = get_parent (OID);
+
+  if (getinfo (parent, info)) {
+    text_t &contains = info["contains"];
+    if (!contains.empty()) {
+      splitchar (contains.begin(), contains.end(), ';', siblings);
+      text_tarray::const_iterator here = siblings.begin();
+      text_tarray::const_iterator end = siblings.end();
+      text_t shrunk_OID = OID;
+      shrink_parent (shrunk_OID);
+      while (here != end) {
+    if (*here == shrunk_OID && (here != siblings.begin())) {
+      OID = *(here-1);
+      if (*(OID.begin()) == '"') translate_parent (OID, parent);
+      break;
+    }
+    ++here;
+      }
+    }
+  }
+}