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/* 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, 2011 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.
This program 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 3 of the License, or
(at your option) any later version.
This program 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. If not, see <http://www.gnu.org/licenses/>. */
/* 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 prefix for the constants. */
const char * get_constants_prefix () const;
/* Sets the prefix for the constants, if not already set. */
void set_constants_prefix (const char *prefix);
/* 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);
/* 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;
/* Prefix for the constants. */
const char * _constants_prefix;
/* Separates keywords from other attributes. */
const char * _delimiters;
/* 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
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