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Utilities`Package`
The FindPackages function.
The functions in this package are for searching and maintaining Mathematica packages. FindPackages will give a list of the packages available, in their context form (e.g., "Utilities`Package`") or in a full path name form (e.g., "/usr/local/Mathematica/Packages/Standard/Utilities/Package.m".) You can specify a list of directories to search. You can also specify a string pattern, or a list of patterns, to be matched. Note that a pattern should not try to match the ".m"; the function handles this.
This loads the package.
In[1]:= <<Utilities`Package`
This gives all packages whose names end in "ca" for each directory in $Path. Directories containing no packages fitting the pattern give empty lists.
In[2]:= FindPackages[$Path, "*ca"]
Out[2]= {{}, {}, {}, {DiscreteMath`Combinatorica`}, {}}
Option for FindPackages.
Here the same search is performed, but full path names are returned.
In[3]:= FindPackages[$Path, "*ca",
FullPath -> True]
Out[3]= {{}, {}, {},
{/usr/local/mathematica/AddOns/StandardPackages/
DiscreteMath/Combinatorica.m},
{}}
The Annotation function.
Mathematica packages contain various annotative comments tagged with keywords. The Annotation function allows you to discover what keywords are present in a package (or list of packages), then retrieve the actual annotation comments containing the keywords. This function recognizes a package name in either context form or as an explicit file name.
This finds the annotative keywords in the Utilities`Package` package.
In[4]:= Annotation["Utilities`Package`"]
Out[4]= 
The string "MathematicaVersion" is a useful keyword; it generally indicates the minimum release of Mathematica required for a particular package.
In[5]:= Annotation["Utilities`Package`",
"Mathematica Version"]
Out[5]= 
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