Update doxygen documentation generation to be useful.

2 files changed, 200 insertions, 74 deletions

diff --git a/doxygen.cfg b/doxygen.cfg
index b13671e..90706c2 100644
--- a/doxygen.cfg
+++ b/doxygen.cfg
@@ -1,4 +1,4 @@
-# Doxyfile 1.5.3
+# Doxyfile 1.5.6
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project
@@ -14,11 +14,11 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 
-# This tag specifies the encoding used for all characters in the config file that 
-# follow. The default is UTF-8 which is also the encoding used for all text before 
-# the first occurrence of this tag. Doxygen uses libiconv (or the iconv built into 
-# libc) for the transcoding. See http://www.gnu.org/software/libiconv for the list of 
-# possible encodings.
+# This tag specifies the encoding used for all characters in the config file 
+# that follow. The default is UTF-8 which is also the encoding used for all 
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the 
+# iconv built into libc) for the transcoding. See 
+# http://www.gnu.org/software/libiconv for the list of possible encodings.
 
 DOXYFILE_ENCODING      = UTF-8
 
@@ -31,7 +31,7 @@ PROJECT_NAME           = libplist
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.1.0
+PROJECT_NUMBER         = 0.14.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put. 
@@ -54,10 +54,11 @@ CREATE_SUBDIRS         = NO
 # information to generate all constant output in the proper language. 
 # The default language is English, other supported languages are: 
 # Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional, 
-# Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hungarian, 
-# Italian, Japanese, Japanese-en (Japanese with English messages), Korean, 
-# Korean-en, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, 
-# Serbian, Slovak, Slovene, Spanish, Swedish, and Ukrainian.
+# Croatian, Czech, Danish, Dutch, Farsi, Finnish, French, German, Greek, 
+# Hungarian, Italian, Japanese, Japanese-en (Japanese with English messages), 
+# Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian, Polish, 
+# Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, 
+# and Ukrainian.
 
 OUTPUT_LANGUAGE        = English
 
@@ -113,7 +114,7 @@ FULL_PATH_NAMES        = YES
 # If left blank the directory from which doxygen is run is used as the 
 # path to strip.
 
-STRIP_FROM_PATH        = 
+STRIP_FROM_PATH        = include
 
 # The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
 # the path mentioned in the documentation of a class, which tells 
@@ -195,14 +196,26 @@ ALIASES                =
 OPTIMIZE_OUTPUT_FOR_C  = YES
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
-# sources only. Doxygen will then generate output that is more tailored for Java. 
-# For instance, namespaces will be presented as packages, qualified scopes 
-# will look different, etc.
+# sources only. Doxygen will then generate output that is more tailored for 
+# Java. For instance, namespaces will be presented as packages, qualified 
+# scopes will look different, etc.
 
 OPTIMIZE_OUTPUT_JAVA   = NO
 
-# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want to 
-# include (a tag file for) the STL sources as input, then you should 
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran 
+# sources only. Doxygen will then generate output that is more tailored for 
+# Fortran.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL 
+# sources. Doxygen will then generate output that is tailored for 
+# VHDL.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want 
+# to include (a tag file for) the STL sources as input, then you should 
 # set this tag to YES in order to let doxygen match functions declarations and 
 # definitions whose arguments contain STL classes (e.g. func(std::string); v.s. 
 # func(std::string) {}). This also make the inheritance and collaboration 
@@ -215,6 +228,21 @@ BUILTIN_STL_SUPPORT    = NO
 
 CPP_CLI_SUPPORT        = NO
 
+# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only. 
+# Doxygen will parse them like normal C++ but will assume all classes use public 
+# instead of private inheritance when no explicit protection keyword is present.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate getter 
+# and setter methods for a property. Setting this option to YES (the default) 
+# will make doxygen to replace the get and set methods by a property in the 
+# documentation. This will only work if the methods are indeed getting or 
+# setting a simple type. If this is not the case, or you want to show the 
+# methods anyway, you should set this option to NO.
+
+IDL_PROPERTY_SUPPORT   = YES
+
 # If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
 # tag is set to YES, then doxygen will reuse the documentation of the first 
 # member in the group (if any) for the other members of the group. By default 
@@ -228,7 +256,17 @@ DISTRIBUTE_GROUP_DOC   = NO
 # NO to prevent subgrouping. Alternatively, this can be done per class using 
 # the \nosubgrouping command.
 
-SUBGROUPING            = YES
+SUBGROUPING            = NO
+
+# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum 
+# is documented as struct, union, or enum with the name of the typedef. So 
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct 
+# with name TypeT. When disabled the typedef will appear as a member of a file, 
+# namespace, or class. And the struct will be named TypeS. This can typically 
+# be useful for C code in case the coding convention dictates that all compound 
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+
+TYPEDEF_HIDES_STRUCT   = YES
 
 #---------------------------------------------------------------------------
 # Build related configuration options
@@ -239,7 +277,7 @@ SUBGROUPING            = YES
 # Private class members and static file members will be hidden unless 
 # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
 
-EXTRACT_ALL            = YES
+EXTRACT_ALL            = NO
 
 # If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
 # will be included in the documentation.
@@ -264,10 +302,11 @@ EXTRACT_LOCAL_CLASSES  = YES
 
 EXTRACT_LOCAL_METHODS  = NO
 
-# If this flag is set to YES, the members of anonymous namespaces will be extracted 
-# and appear in the documentation as a namespace called 'anonymous_namespace{file}', 
-# where file will be replaced with the base name of the file that contains the anonymous 
-# namespace. By default anonymous namespace are hidden.
+# If this flag is set to YES, the members of anonymous namespaces will be 
+# extracted and appear in the documentation as a namespace called 
+# 'anonymous_namespace{file}', where file will be replaced with the base 
+# name of the file that contains the anonymous namespace. By default 
+# anonymous namespace are hidden.
 
 EXTRACT_ANON_NSPACES   = NO
 
@@ -346,6 +385,12 @@ SORT_MEMBER_DOCS       = YES
 
 SORT_BRIEF_DOCS        = NO
 
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the 
+# hierarchy of group names into alphabetical order. If set to NO (the default) 
+# the group names will appear in their defined order.
+
+SORT_GROUP_NAMES       = NO
+
 # If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
 # sorted by fully-qualified names, including namespaces. If set to 
 # NO (the default), the class list will be sorted only by class name, 
@@ -407,9 +452,21 @@ SHOW_USED_FILES        = YES
 
 SHOW_DIRECTORIES       = NO
 
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page.
+# This will remove the Files entry from the Quick Index and from the 
+# Folder Tree View (if specified). The default is YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the 
+# Namespaces page.  This will remove the Namespaces entry from the Quick Index
+# and from the Folder Tree View (if specified). The default is YES.
+
+SHOW_NAMESPACES        = YES
+
 # The FILE_VERSION_FILTER tag can be used to specify a program or script that 
-# doxygen should invoke to get the current version for each file (typically from the 
-# version control system). Doxygen will invoke the program by executing (via 
+# doxygen should invoke to get the current version for each file (typically from 
+# the version control system). Doxygen will invoke the program by executing (via 
 # popen()) the command <command> <input-file>, where <command> is the value of 
 # the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file 
 # provided by doxygen. Whatever the program writes to standard output 
@@ -477,12 +534,14 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories 
 # with spaces.
 
-INPUT                  = src
+INPUT                  = src \
+                         include/plist
 
-# This tag can be used to specify the character encoding of the source files that 
-# doxygen parses. Internally doxygen uses the UTF-8 encoding, which is also the default 
-# input encoding. Doxygen uses libiconv (or the iconv built into libc) for the transcoding. 
-# See http://www.gnu.org/software/libiconv for the list of possible encodings.
+# This tag can be used to specify the character encoding of the source files 
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is 
+# also the default input encoding. Doxygen uses libiconv (or the iconv built 
+# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for 
+# the list of possible encodings.
 
 INPUT_ENCODING         = UTF-8
 
@@ -491,7 +550,7 @@ INPUT_ENCODING         = UTF-8
 # and *.h) to filter out the source-files in the directories. If left 
 # blank the following patterns are tested: 
 # *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx 
-# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
 
 FILE_PATTERNS          = 
 
@@ -505,7 +564,7 @@ RECURSIVE              = NO
 # excluded from the INPUT source files. This way you can easily exclude a 
 # subdirectory from a directory tree whose root is specified with the INPUT tag.
 
-EXCLUDE                = src/main.c src/ifuse.c
+EXCLUDE                = dev
 
 # The EXCLUDE_SYMLINKS tag can be used select whether or not files or 
 # directories that are symbolic links (a Unix filesystem feature) are excluded 
@@ -522,9 +581,10 @@ EXCLUDE_SYMLINKS       = NO
 EXCLUDE_PATTERNS       = 
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names 
-# (namespaces, classes, functions, etc.) that should be excluded from the output. 
-# The symbol name can be a fully qualified name, a word, or if the wildcard * is used, 
-# a substring. Examples: ANamespace, AClass, AClass::ANamespace, ANamespace::*Test
+# (namespaces, classes, functions, etc.) that should be excluded from the 
+# output. The symbol name can be a fully qualified name, a word, or if the 
+# wildcard * is used, a substring. Examples: ANamespace, AClass, 
+# AClass::ANamespace, ANamespace::*Test
 
 EXCLUDE_SYMBOLS        = 
 
@@ -586,11 +646,9 @@ FILTER_SOURCE_FILES    = NO
 # If the SOURCE_BROWSER tag is set to YES then a list of source files will 
 # be generated. Documented entities will be cross-referenced with these sources. 
 # Note: To get rid of all source code in the generated output, make sure also 
-# VERBATIM_HEADERS is set to NO. If you have enabled CALL_GRAPH or CALLER_GRAPH 
-# then you must also enable this option. If you don't then doxygen will produce 
-# a warning and turn it on anyway
+# VERBATIM_HEADERS is set to NO.
 
-SOURCE_BROWSER         = YES
+SOURCE_BROWSER         = NO
 
 # Setting the INLINE_SOURCES tag to YES will include the body 
 # of functions and classes directly in the documentation.
@@ -603,13 +661,13 @@ INLINE_SOURCES         = NO
 
 STRIP_CODE_COMMENTS    = YES
 
-# If the REFERENCED_BY_RELATION tag is set to YES (the default) 
+# If the REFERENCED_BY_RELATION tag is set to YES 
 # then for each documented function all documented 
 # functions referencing it will be listed.
 
 REFERENCED_BY_RELATION = YES
 
-# If the REFERENCES_RELATION tag is set to YES (the default) 
+# If the REFERENCES_RELATION tag is set to YES 
 # then for each documented function all documented entities 
 # called/used by that function will be listed.
 
@@ -634,7 +692,7 @@ USE_HTAGS              = NO
 # will generate a verbatim copy of the header file for each class for 
 # which an include is specified. Set to NO to disable this.
 
-VERBATIM_HEADERS       = YES
+VERBATIM_HEADERS       = NO
 
 #---------------------------------------------------------------------------
 # configuration options related to the alphabetical class index
@@ -709,11 +767,36 @@ HTML_ALIGN_MEMBERS     = YES
 
 # If the GENERATE_HTMLHELP tag is set to YES, additional index files 
 # will be generated that can be used as input for tools like the 
-# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) 
+# Microsoft HTML help workshop to generate a compiled HTML help file (.chm) 
 # of the generated HTML documentation.
 
 GENERATE_HTMLHELP      = NO
 
+# If the GENERATE_DOCSET tag is set to YES, additional index files 
+# will be generated that can be used as input for Apple's Xcode 3 
+# integrated development environment, introduced with OSX 10.5 (Leopard). 
+# To create a documentation set, doxygen will generate a Makefile in the 
+# HTML output directory. Running make will produce the docset in that 
+# directory and running "make install" will install the docset in 
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find 
+# it at startup.
+
+GENERATE_DOCSET        = NO
+
+# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the 
+# feed. A documentation feed provides an umbrella under which multiple 
+# documentation sets from a single provider (such as a company or product suite) 
+# can be grouped.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that 
+# should uniquely identify the documentation set bundle. This should be a 
+# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen 
+# will append .docset to the name.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
 # If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML 
 # documentation will contain sections that can be hidden and shown after the 
 # page has loaded. For this to work a browser that supports 
@@ -742,6 +825,12 @@ HHC_LOCATION           =
 
 GENERATE_CHI           = NO
 
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING
+# is used to encode HtmlHelp index (hhk), content (hhc) and project file
+# content.
+
+CHM_INDEX_ENCODING     = 
+
 # If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
 # controls whether a binary table of contents is generated (YES) or a 
 # normal table of contents (NO) in the .chm file.
@@ -764,14 +853,22 @@ DISABLE_INDEX          = NO
 
 ENUM_VALUES_PER_LINE   = 4
 
-# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be
-# generated containing a tree-like index structure (just like the one that 
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information.
+# If the tag value is set to FRAME, a side panel will be generated
+# containing a tree-like index structure (just like the one that 
 # is generated for HTML Help). For this to work a browser that supports 
 # JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, 
 # Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are 
-# probably better off using the HTML help feature.
+# probably better off using the HTML help feature. Other possible values 
+# for this tag are: HIERARCHIES, which will generate the Groups, Directories,
+# and Class Hiererachy pages using a tree view instead of an ordered list;
+# ALL, which combines the behavior of FRAME and HIERARCHIES; and NONE, which
+# disables this behavior completely. For backwards compatibility with previous
+# releases of Doxygen, the values YES and NO are equivalent to FRAME and NONE
+# respectively.
 
-GENERATE_TREEVIEW      = YES
+GENERATE_TREEVIEW      = NO
 
 # If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
 # used to set the initial width (in pixels) of the frame in which the tree 
@@ -779,6 +876,14 @@ GENERATE_TREEVIEW      = YES
 
 TREEVIEW_WIDTH         = 250
 
+# Use this tag to change the font size of Latex formulas included 
+# as images in the HTML documentation. The default is 10. Note that 
+# when you change the font size after a successful doxygen run you need 
+# to manually remove any form_*.png images from the HTML output directory 
+# to force them to be regenerated.
+
+FORMULA_FONTSIZE       = 10
+
 #---------------------------------------------------------------------------
 # configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
@@ -1031,7 +1136,7 @@ EXPAND_ONLY_PREDEF     = NO
 # If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
 # in the INCLUDE_PATH (see below) will be search if a #include is found.
 
-SEARCH_INCLUDES        = YES
+SEARCH_INCLUDES        = NO
 
 # The INCLUDE_PATH tag can be used to specify one or more directories that 
 # contain include files that are not input files but should be processed by 
@@ -1128,10 +1233,11 @@ PERL_PATH              = /usr/bin/perl
 CLASS_DIAGRAMS         = YES
 
 # You can define message sequence charts within doxygen comments using the \msc 
-# command. Doxygen will then run the mscgen tool (see http://www.mcternan.me.uk/mscgen/) to 
-# produce the chart and insert it in the documentation. The MSCGEN_PATH tag allows you to 
-# specify the directory where the mscgen tool resides. If left empty the tool is assumed to 
-# be found in the default search path.
+# command. Doxygen will then run the mscgen tool (see 
+# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the 
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where 
+# the mscgen tool resides. If left empty the tool is assumed to be found in the 
+# default search path.
 
 MSCGEN_PATH            = 
 
@@ -1148,6 +1254,24 @@ HIDE_UNDOC_RELATIONS   = YES
 
 HAVE_DOT               = NO
 
+# By default doxygen will write a font called FreeSans.ttf to the output 
+# directory and reference it in all dot files that doxygen generates. This 
+# font does not include all possible unicode characters however, so when you need 
+# these (or just want a differently looking font) you can specify the font name 
+# using DOT_FONTNAME. You need need to make sure dot is able to find the font, 
+# which can be done by putting it in a standard location or by setting the 
+# DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory 
+# containing the font.
+
+DOT_FONTNAME           = FreeSans
+
+# By default doxygen will tell dot to use the output directory to look for the 
+# FreeSans.ttf font (which doxygen will put there itself). If you specify a 
+# different font using DOT_FONTNAME you can set the path where dot 
+# can find it using this tag.
+
+DOT_FONTPATH           = 
+
 # If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
 # will generate a graph for each documented class showing the direct and 
 # indirect inheritance relations. Setting this tag to YES will force the 
@@ -1192,19 +1316,19 @@ INCLUDE_GRAPH          = YES
 
 INCLUDED_BY_GRAPH      = YES
 
-# If the CALL_GRAPH, SOURCE_BROWSER and HAVE_DOT tags are set to YES then doxygen will 
-# generate a call dependency graph for every global function or class method. 
-# Note that enabling this option will significantly increase the time of a run. 
-# So in most cases it will be better to enable call graphs for selected 
-# functions only using the \callgraph command.
+# If the CALL_GRAPH and HAVE_DOT options are set to YES then 
+# doxygen will generate a call dependency graph for every global function 
+# or class method. Note that enabling this option will significantly increase 
+# the time of a run. So in most cases it will be better to enable call graphs 
+# for selected functions only using the \callgraph command.
 
 CALL_GRAPH             = NO
 
-# If the CALLER_GRAPH, SOURCE_BROWSER and HAVE_DOT tags are set to YES then doxygen will 
-# generate a caller dependency graph for every global function or class method. 
-# Note that enabling this option will significantly increase the time of a run. 
-# So in most cases it will be better to enable caller graphs for selected 
-# functions only using the \callergraph command.
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then 
+# doxygen will generate a caller dependency graph for every global function 
+# or class method. Note that enabling this option will significantly increase 
+# the time of a run. So in most cases it will be better to enable caller 
+# graphs for selected functions only using the \callergraph command.
 
 CALLER_GRAPH           = NO
 
@@ -1237,12 +1361,12 @@ DOT_PATH               =
 
 DOTFILE_DIRS           = 
 
-# The MAX_DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of 
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of 
 # nodes that will be shown in the graph. If the number of nodes in a graph 
 # becomes larger than this value, doxygen will truncate the graph, which is 
-# visualized by representing a node as a red box. Note that doxygen if the number 
-# of direct children of the root node in a graph is already larger than 
-# MAX_DOT_GRAPH_NOTES then the graph will not be shown at all. Also note 
+# visualized by representing a node as a red box. Note that doxygen if the 
+# number of direct children of the root node in a graph is already larger than 
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note 
 # that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
 
 DOT_GRAPH_MAX_NODES    = 50
@@ -1258,10 +1382,10 @@ DOT_GRAPH_MAX_NODES    = 50
 MAX_DOT_GRAPH_DEPTH    = 0
 
 # Set the DOT_TRANSPARENT tag to YES to generate images with a transparent 
-# background. This is disabled by default, which results in a white background. 
-# Warning: Depending on the platform used, enabling this option may lead to 
-# badly anti-aliased labels on the edges of a graph (i.e. they become hard to 
-# read).
+# background. This is enabled by default, which results in a transparent 
+# background. Warning: Depending on the platform used, enabling this option 
+# may lead to badly anti-aliased labels on the edges of a graph (i.e. they 
+# become hard to read).
 
 DOT_TRANSPARENT        = NO
 
diff --git a/include/plist/plist.h b/include/plist/plist.h
index d3f0836..47e5df3 100644
--- a/include/plist/plist.h
+++ b/include/plist/plist.h
@@ -1,6 +1,7 @@
-/*
- * plist.h
- * Main include of libplist
+/**
+ * @file plist/plist.h
+ * @brief Main include of libplist
+ * \internal
  *
  * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
  *
@@ -174,7 +175,7 @@ extern "C"
     /**
      * Return a copy of passed node and it's children
      *
-     * @param plist the plist to copy
+     * @param node the plist to copy
      * @return copied plist
      */
     PLIST_API plist_t plist_copy(plist_t node);
@@ -401,6 +402,7 @@ extern "C"
      * @param node the node
      * @param val a pointer to an unallocated char buffer. This function allocates the memory,
      *            caller is responsible for freeing it.
+     * @param length the length of the buffer
      */
     PLIST_API void plist_get_data_val(plist_t node, char **val, uint64_t * length);