/* This may look like C code, but it is really -*- C++ -*- */ /* Handles parsing the Options provided to the user. Copyright (C) 1989-1998, 2000, 2002-2004 Free Software Foundation, Inc. Written by Douglas C. Schmidt <schmidt@ics.uci.edu> and Bruno Haible <bruno@clisp.org>. This file is part of GNU GPERF. GNU GPERF is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU GPERF is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* This module provides a uniform interface to the various options available to a user of the gperf hash function generator. */ #ifndef options_h #define options_h 1 #include <stdio.h> #include "positions.h" /* Enumeration of the possible boolean options. */ enum Option_Type { /* --- Input file interpretation --- */ /* Handle user-defined type structured keyword input. */ TYPE = 1 << 0, /* Ignore case of ASCII characters. */ UPPERLOWER = 1 << 1, /* --- Language for the output code --- */ /* Generate K&R C code: no prototypes, no const. */ KRC = 1 << 2, /* Generate C code: no prototypes, but const (user can #define it away). */ C = 1 << 3, /* Generate ISO/ANSI C code: prototypes and const, but no class. */ ANSIC = 1 << 4, /* Generate C++ code: prototypes, const, class, inline, enum. */ CPLUSPLUS = 1 << 5, /* --- Details in the output code --- */ /* Assume 7-bit, not 8-bit, characters. */ SEVENBIT = 1 << 6, /* Generate a length table for string comparison. */ LENTABLE = 1 << 7, /* Generate strncmp rather than strcmp. */ COMP = 1 << 8, /* Make the generated tables readonly (const). */ CONST = 1 << 9, /* Use enum for constants. */ ENUM = 1 << 10, /* Generate #include statements. */ INCLUDE = 1 << 11, /* Make the keyword table a global variable. */ GLOBAL = 1 << 12, /* Use NULL strings instead of empty strings for empty table entries. */ NULLSTRINGS = 1 << 13, /* Optimize for position-independent code. */ SHAREDLIB = 1 << 14, /* Generate switch output to save space. */ SWITCH = 1 << 15, /* Don't include user-defined type definition in output -- it's already defined elsewhere. */ NOTYPE = 1 << 16, /* --- Algorithm employed by gperf --- */ /* Use the given key positions. */ POSITIONS = 1 << 17, /* Handle duplicate hash values for keywords. */ DUP = 1 << 18, /* Don't include keyword length in hash computations. */ NOLENGTH = 1 << 19, /* Randomly initialize the associated values table. */ RANDOM = 1 << 20, /* --- Informative output --- */ /* Enable debugging (prints diagnostics to stderr). */ DEBUG = 1 << 21 }; /* Class manager for gperf program Options. */ class Options { public: /* Constructor. */ Options (); /* Destructor. */ ~Options (); /* Parses the options given in the command-line arguments. */ void parse_options (int argc, char *argv[]); /* Prints the given options. */ void print_options () const; /* Accessors. */ /* Tests a given boolean option. Returns true if set, false otherwise. */ bool operator[] (Option_Type option) const; /* Sets a given boolean option. */ void set (Option_Type option); /* Returns the input file name. */ const char * get_input_file_name () const; /* Returns the output file name. */ const char * get_output_file_name () const; /* Sets the output language, if not already set. */ void set_language (const char *language); /* Returns the jump value. */ int get_jump () const; /* Returns the initial associated character value. */ int get_initial_asso_value () const; /* Returns the number of iterations for finding good asso_values. */ int get_asso_iterations () const; /* Returns the total number of switch statements to generate. */ int get_total_switches () const; /* Sets the total number of switch statements, if not already set. */ void set_total_switches (int total_switches); /* Returns the factor by which to multiply the generated table's size. */ float get_size_multiple () const; /* Returns the generated function name. */ const char * get_function_name () const; /* Sets the generated function name, if not already set. */ void set_function_name (const char *name); /* Returns the keyword key name. */ const char * get_slot_name () const; /* Sets the keyword key name, if not already set. */ void set_slot_name (const char *name); /* Returns the struct initializer suffix. */ const char * get_initializer_suffix () const; /* Sets the struct initializer suffix, if not already set. */ void set_initializer_suffix (const char *initializers); /* Returns the generated class name. */ const char * get_class_name () const; /* Sets the generated class name, if not already set. */ void set_class_name (const char *name); /* Returns the hash function name. */ const char * get_hash_name () const; /* Sets the hash function name, if not already set. */ void set_hash_name (const char *name); /* Returns the hash table array name. */ const char * get_wordlist_name () const; /* Sets the hash table array name, if not already set. */ void set_wordlist_name (const char *name); /* Returns the length table array name. */ const char * get_lengthtable_name () const; /* Sets the length table array name, if not already set. */ void set_lengthtable_name (const char *name); /* Returns the string pool name. */ const char * get_stringpool_name () const; /* Sets the string pool name, if not already set. */ void set_stringpool_name (const char *name); /* Returns the string used to delimit keywords from other attributes. */ const char * get_delimiters () const; /* Sets the delimiters string, if not already set. */ void set_delimiters (const char *delimiters); const char * get_size_type() const; void set_size_type(const char*); /* Returns key positions. */ const Positions& get_key_positions () const; private: /* Prints program usage to given stream. */ static void short_usage (FILE * stream); /* Prints program usage to given stream. */ static void long_usage (FILE * stream); /* Records count of command-line arguments. */ int _argument_count; /* Stores a pointer to command-line argument vector. */ char ** _argument_vector; /* Holds the boolean options. */ int _option_word; /* Name of input file. */ char * _input_file_name; /* Name of output file. */ char * _output_file_name; /* The output language. */ const char * _language; /* Jump length when trying alternative values. */ int _jump; /* Initial value for asso_values table. */ int _initial_asso_value; /* Number of attempts at finding good asso_values. */ int _asso_iterations; /* Number of switch statements to generate. */ int _total_switches; /* Factor by which to multiply the generated table's size. */ float _size_multiple; /* Names used for generated lookup function. */ const char * _function_name; /* Name used for keyword key. */ const char * _slot_name; /* Suffix for empty struct initializers. */ const char * _initializer_suffix; /* Name used for generated C++ class. */ const char * _class_name; /* Name used for generated hash function. */ const char * _hash_name; /* Name used for hash table array. */ const char * _wordlist_name; /* Name used for length table array. */ const char * _lengthtable_name; /* Name used for the string pool. */ const char * _stringpool_name; /* Separates keywords from other attributes. */ const char * _delimiters; const char * _size_type; /* Contains user-specified key choices. */ Positions _key_positions; }; /* Global option coordinator for the entire program. */ extern Options option; #ifdef __OPTIMIZE__ #define INLINE inline #include "options.icc" #undef INLINE #endif #endif