commit 3c17f4c11c9f4183b3ed5a3ed8423858a058de8c
Author: Daniel Swanson <popcorn.tomato.dude@gmail.com>
Date:   Mon Jun 14 11:37:09 2021 -0500

    move xml iterator to lttoolbox

diff --git a/lttoolbox/Makefile.am b/lttoolbox/Makefile.am
index 44c38f9..2fd56b0 100644
--- a/lttoolbox/Makefile.am
+++ b/lttoolbox/Makefile.am
@@ -3,13 +3,13 @@ h_sources = alphabet.h att_compiler.h buffer.h compiler.h compression.h  \
             deserialiser.h entry_token.h expander.h fst_processor.h input_file.h lt_locale.h \
             match_exe.h match_node.h match_state.h my_stdio.h node.h \
             pattern_list.h regexp_compiler.h serialiser.h sorted_vector.h state.h string_utils.h \
-            transducer.h trans_exe.h xml_parse_util.h exception.h tmx_compiler.h \
+            transducer.h trans_exe.h xml_parse_util.h xml_walk_util.h exception.h tmx_compiler.h \
             ustring.h
 cc_sources = alphabet.cc att_compiler.cc compiler.cc compression.cc entry_token.cc \
              expander.cc fst_processor.cc input_file.cc lt_locale.cc match_exe.cc \
              match_node.cc match_state.cc node.cc pattern_list.cc \
              regexp_compiler.cc sorted_vector.cc state.cc string_utils.cc transducer.cc \
-             trans_exe.cc xml_parse_util.cc tmx_compiler.cc ustring.cc
+             trans_exe.cc xml_parse_util.cc xml_walk_util.cc tmx_compiler.cc ustring.cc
 
 library_includedir = $(includedir)/$(PACKAGE_NAME)-$(VERSION_API)/$(PACKAGE_NAME)
 library_include_HEADERS = $(h_sources)
diff --git a/lttoolbox/xml_walk_util.cc b/lttoolbox/xml_walk_util.cc
new file mode 100644
index 0000000..8611556
--- /dev/null
+++ b/lttoolbox/xml_walk_util.cc
@@ -0,0 +1,65 @@
+#include <lttoolbox/xml_walk_util.h>
+
+children::children(xmlNode* node_)
+  : node(node_), cur(node->children)
+{
+  while (cur && cur->type != XML_ELEMENT_NODE) {
+    cur = cur->next;
+  }
+}
+
+children::children(const children& it)
+  : node(it.node), cur(it.cur)
+{}
+
+children::~children()
+{} // we don't own the pointers, so we don't delete them
+
+children&
+children::operator++()
+{
+  if (node && cur) {
+    cur = cur->next;
+    while (cur && cur->type != XML_ELEMENT_NODE) {
+      cur = cur->next;
+    }
+  }
+  return *this;
+}
+
+children
+children::begin()
+{
+  return children(node);
+}
+
+children
+children::end()
+{
+  children ret(node);
+  ret.cur = nullptr;
+  return ret;
+}
+
+bool
+children::operator!=(const children& other) const
+{
+  return node != other.node || cur != other.cur;
+}
+
+bool
+children::operator==(const children& other) const
+{
+  return node == other.node && cur == other.cur;
+}
+
+UString
+getattr(xmlNode* node, const char* attr)
+{
+  for (xmlAttr* i = node->properties; i != NULL; i = i->next) {
+    if (!xmlStrcmp(i->name, (const xmlChar*) attr)) {
+      return to_ustring((const char*) i->children->content);
+    }
+  }
+  return ""_u;
+}
diff --git a/lttoolbox/xml_walk_util.h b/lttoolbox/xml_walk_util.h
new file mode 100644
index 0000000..13ca6a4
--- /dev/null
+++ b/lttoolbox/xml_walk_util.h
@@ -0,0 +1,29 @@
+#ifndef _XML_WALK_UTIL_
+#define _XML_WALK_UTIL_
+
+#include <lttoolbox/ustring.h>
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+
+class children
+{
+private:
+  xmlNode* node;
+  xmlNode* cur;
+public:
+  children(xmlNode* node);
+  children(const children& it);
+  ~children();
+
+  children& operator++();
+  children begin();
+  children end();
+  inline xmlNode* operator*() const { return cur; }
+  bool operator!=(const children& other) const;
+  bool operator==(const children& other) const;
+};
+
+UString getattr(xmlNode* node, const char* attr);
+
+#endif