move account code tools to different file

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@1327 57a11ea4-9604-0410-9ed3-97b8803252fd

src/engine/Account.c

@@ -630,55 +630,12 @@ xaccAccountOrder (Account **aa, Account **ab)
 void 
 xaccAccountAutoCode (Account *acc, int digits)
 {
-  Account *rent;
-  int maxcode = 0;
-  AccountGroup *top = acc->parent;
-  int i;
-
   if (!acc) return;
   if (acc->accountCode) return;   /* no-op if code already assinged */
   if (!(acc->parent)) return; 
 
-  /* count levels to top */
-  rent = acc->parent->parent;
-  while (rent) {
-    digits --;
-    assert (rent->parent);
-    rent = rent->parent->parent;
-  }
-
-  /* if (0>digits)  we could insert a decimal place, but I am too lazy
-   * to write this code.  It doesn't seem important at the moment ... */
-
-  /* find the largest used code */
-  rent = acc->parent->parent;
-  if (rent) {
-     if (rent->accountCode) {
-        maxcode = strtol (rent->accountCode, NULL, BASE);
-     }
-  }
-  for (i=0; i<top->numAcc; i++) {
-     Account *acnt = top->account[i];
-     if (acnt->accountCode) {
-        int code = strtol (acnt->accountCode, NULL, BASE);
-        if (code > maxcode) maxcode = code;
-     }
-  }
-
-  /* right-shift */
-  for (i=1; i<digits; i++) {
-     maxcode /= BASE;
-  }
-  maxcode ++;
-
-  /* left-shift */
-  for (i=1; i<digits; i++) {
-     maxcode *= BASE;
-  }
-
-  /* print */
-  acc->accountCode = ultostr ((unsigned long) maxcode, BASE);
-  top->saved = FALSE;
+  acc->accountCode = xaccGroupGetNextFreeCode (acc->parent, digits);
+  acc->parent->saved = FALSE;
 }
 
 /********************************************************************\

src/engine/Group.c

@@ -456,6 +456,63 @@ xaccRecomputeGroupBalance (AccountGroup *grp)
    }
 }
 
+/********************************************************************\
+\********************************************************************/
+/* account codes will be assigned base-36, with three digits */
+
+#define BASE 36
+
+char *
+xaccGroupGetNextFreeCode (AccountGroup *grp, int digits)
+{
+  Account *acc;
+  int i, maxcode = 0;
+  char * retval;
+
+  if (!grp) return NULL;
+
+  /* count levels to top */
+  acc = grp->parent;
+  while (acc) {
+    digits --;
+    assert (acc->parent);
+    acc = acc->parent->parent;
+  }
+
+  /* if (0>digits)  we could insert a decimal place, but I am too lazy
+   * to write this code.  It doesn't seem important at the moment ... */
+
+  /* find the largest used code */
+  acc = grp->parent;
+  if (acc) {
+     if (acc->accountCode) {
+        maxcode = strtol (acc->accountCode, NULL, BASE);
+     }
+  }
+  for (i=0; i<grp->numAcc; i++) {
+     Account *acnt = grp->account[i];
+     if (acnt->accountCode) {
+        int code = strtol (acnt->accountCode, NULL, BASE);
+        if (code > maxcode) maxcode = code;
+     }
+  }
+
+  /* right-shift */
+  for (i=1; i<digits; i++) {
+     maxcode /= BASE;
+  }
+  maxcode ++;
+
+  /* left-shift */
+  for (i=1; i<digits; i++) {
+     maxcode *= BASE;
+  }
+
+  /* print */
+  retval = ultostr ((unsigned long) maxcode, BASE);
+  return retval;
+}
+
 /********************************************************************\
 \********************************************************************/
 

src/engine/Group.h

@@ -147,6 +147,9 @@ Account * xaccGroupGetAccount (AccountGroup *, int);
 double    xaccGroupGetBalance (AccountGroup *);
 
 /*
+ * The xaccGroupNextFreeCode() method will try to guess a reasonable 
+ *    candidate for the next unused account code in this group.
+ *
  * The xaccGroupAutoCode() method will traverse the group, automatically
  *    inserting account codes into those accounts whose account codes 
  *    are blank.  It uses the algorithm used in xaccAccountAutoCode()
@@ -157,7 +160,8 @@ double    xaccGroupGetBalance (AccountGroup *);
  *    code.
  */
 
-void xaccGroupAutoCode (AccountGroup *grp, int num_digits);
-void xaccGroupDepthAutoCode (AccountGroup *grp);
+char * xaccGroupGetNextFreeCode (AccountGroup *grp, int num_digits);
+void   xaccGroupAutoCode (AccountGroup *grp, int num_digits);
+void   xaccGroupDepthAutoCode (AccountGroup *grp);
 
 #endif /* __XACC_ACCOUNT_GROUP_H__ */