glib-mkenums - C language enum description generation utility


   glib-mkenums [OPTION...] [FILE...]


   glib-mkenums is a small perl-script utility that parses C code to
   extract enum definitions and produces enum descriptions based on text
   templates specified by the user. Most frequently this script is used to
   produce C code that contains enum values as strings so programs can
   provide value name strings for introspection.

   glib-mkenums takes a list of valid C code files as input. The options
   specified control the text that is output, certain substitutions are
   performed on the text templates for keywords enclosed in @ characters.

   Production text substitutions
   Certain keywords enclosed in @ characters will be substituted in the
   emitted text. For the substitution examples of the keywords below, the
   following example enum definition is assumed:

       The name of the enum currently being processed, enum names are
       assumed to be properly namespaced and to use mixed capitalization
       to separate words (e.g. PrefixTheXEnum).

       The enum name with words lowercase and word-separated by
       underscores (e.g. prefix_the_xenum).

       The enum name with words uppercase and word-separated by
       underscores (e.g. PREFIX_THE_XENUM).

       The enum name with words uppercase and word-separated by
       underscores, prefix stripped (e.g. THE_XENUM).

       The prefix of the enum name (e.g. PREFIX).

       The enum value name currently being processed with words uppercase
       and word-separated by underscores, this is the assumed literal
       notation of enum values in the C sources (e.g. PREFIX_THE_XVALUE).

       A nick name for the enum value currently being processed, this is
       usually generated by stripping common prefix words of all the enum
       values of the current enum, the words are lowercase and underscores
       are substituted by a minus (e.g. the-xvalue).

       The integer value for the enum value currently being processed.
       This is calculated by using perl to attempt to evaluate the
       expression as it appears in the C source code. If evaluation fails
       then glib-mkenums will exit with an error status, but this only
       happens if @valuenum@ appears in your value production template.
       (Since: 2.26)

       This is substituted either by "enum" or "flags", depending on
       whether the enum value definitions contained bit-shift operators or
       not (e.g. flags).

       The same as @type@ with the first letter capitalized (e.g. Flags).

       The same as @type@ with all letters uppercased (e.g. FLAGS).

       The name of the input file currently being processed (e.g. foo.h).

       The base name of the input file currently being processed (e.g.
       foo.h). (Since: 2.22)

   Trigraph extensions
   Some C comments are treated specially in the parsed enum definitions,
   such comments start out with the trigraph sequence /*< and end with the
   trigraph sequence >*/. Per enum definition, the options "skip" and
   "flags" can be specified, to indicate this enum definition to be
   skipped, or for it to be treated as a flags definition, or to specify
   the common prefix to be stripped from all values to generate value
   nicknames, respectively. The "underscore_name" option can be used to
   specify the word separation used in the *_get_type() function. For
   instance, /*< underscore_name=gnome_vfs_uri_hide_options >*/.

   Per value definition, the options "skip" and "nick" are supported. The
   former causes the value to be skipped, and the latter can be used to
   specify the otherwise auto-generated nickname. Examples:


   --fhead TEXT
       Put out TEXT prior to processing input files.

   --fprod TEXT
       Put out TEXT everytime a new input file is being processed.

   --ftail TEXT
       Put out TEXT after all input files have been processed.

   --eprod TEXT
       Put out TEXT everytime an enum is encountered in the input files.

   --vhead TEXT
       Put out TEXT before iterating over the set of values of an enum.

   --vprod TEXT
       Put out TEXT for every value of an enum.

   --vtail TEXT
       Put out TEXT after iterating over all values of an enum.

   --comments TEXT
       Template for auto-generated comments, the default (for C code
       generations) is "/* @comment@ */".

   --template FILE
       Read templates from the given file. The templates are enclosed in
       specially-formatted C comments
       where section may be file-header, file-production, file-tail,
       enumeration-production, value-header, value-production, value-tail
       or comment.

   --identifier-prefix PREFIX
       Indicates what portion of the enum name should be intepreted as the
       prefix (eg, the "Gtk" in "GtkDirectionType"). Normally this will be
       figured out automatically, but you may need to override the default
       if your namespace is capitalized oddly.

   --symbol-prefix PREFIX
       Indicates what prefix should be used to correspond to the
       identifier prefix in related C function names (eg, the "gtk" in
       "gtk_direction_type_get_type". Equivalently, this is the lowercase
       version of the prefix component of the enum value names (eg, the
       "GTK" in "GTK_DIR_UP". The default value is the identifier prefix,
       converted to lowercase.

       Print brief help and exit.

       Print version and exit.

       Write output to FILE instead of stdout.




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