Split number decoding into a separate file (#276)

* Split number decoding into a separate file

* stragglers

* split out numbers header file too

* Big re ordering of functions

* Fix ifdef fan out

---------

Co-authored-by: Laurence Lundblade <lgl@securitytheory.com>
diff --git a/src/decode_private.h b/src/decode_private.h
new file mode 100644
index 0000000..506c668
--- /dev/null
+++ b/src/decode_private.h
@@ -0,0 +1,95 @@
+/*==============================================================================
+ Copyright (c) 2016-2018, The Linux Foundation.
+ Copyright (c) 2018-2024, Laurence Lundblade.
+ Copyright (c) 2021, Arm Limited.
+ All rights reserved.
+
+ Created on 11/14/24 from qcbor_decode.c
+
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of The Linux Foundation nor the names of its
+      contributors, nor the name "Laurence Lundblade" may be used to
+      endorse or promote products derived from this software without
+      specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ =============================================================================*/
+
+#ifndef decode_private_h
+#define decode_private_h
+
+
+QCBORError
+QCBORDecode_Private_GetNextTagContent(QCBORDecodeContext *pMe,
+                                      QCBORItem          *pDecodedItem);
+
+void
+QCBORDecode_Private_ProcessTagItemMulti(QCBORDecodeContext      *pMe,
+                                        QCBORItem               *pItem,
+                                        const uint8_t            uTagRequirement,
+                                        const uint8_t            uQCBORTypes[],
+                                        const uint64_t           uTagNumbers[],
+                                        QCBORTagContentCallBack *pfCB,
+                                        size_t                   uOffset);
+
+
+void
+QCBORDecode_Private_ProcessTagItem(QCBORDecodeContext      *pMe,
+                                   QCBORItem               *pItem,
+                                   const uint8_t            uTagRequirement,
+                                   const uint8_t            uQCBORTypes[],
+                                   const uint64_t           uTagNumber,
+                                   QCBORTagContentCallBack *pfCB,
+                                   size_t                   uOffset);
+
+void
+QCBORDecode_Private_GetItemInMapNoCheckSZ(QCBORDecodeContext *pMe,
+                                  const char         *szLabel,
+                                  const uint8_t       uQcborType,
+                                  QCBORItem          *pItem,
+                                  size_t             *puOffset);
+
+void
+QCBORDecode_Private_GetItemInMapNoCheckN(QCBORDecodeContext *pMe,
+                                 const int64_t       nLabel,
+                                 const uint8_t       uQcborType,
+                                 QCBORItem          *pItem,
+                                 size_t             *puOffset);
+
+static inline void
+QCBORDecode_Private_GetAndTell(QCBORDecodeContext *pMe, QCBORItem *Item, size_t *uOffset)
+{
+#ifndef QCBOR_DISABLE_TAGS
+   if(pMe->uLastError != QCBOR_SUCCESS) {
+      return;
+   }
+
+   *uOffset = QCBORDecode_Tell(pMe);
+#else
+   *uOffset = SIZE_MAX;
+
+#endif /* ! QCBOR_DISABLE_TAGS */
+   pMe->uLastError = (uint8_t)QCBORDecode_Private_GetNextTagContent(pMe, Item);
+}
+
+
+#endif /* decode_private_h */