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Cleanup options.

Browse Source 
Improve usage message.
Improve output of options like --key-positions=1,2,$.
This commit is contained in:
Bruno Haible
2003-04-03 10:16:13 +00:00
parent 7dfd32b736
commit 68f03b3ea7
3 changed files with 152 additions and 121 deletions
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8
ChangeLog
View File

@@ -1,5 +1,13 @@
2002-12-10 Bruno Haible <bruno@clisp.org>
* src/options.h: Reorder enum values.
(Options::short_usage, Options::long_usage): Make static.
* src/options.cc (Options::short_usage); No longer print a monster
usage line.
(Options::print_options): Improve output of options like
--key-positions=1,2,$.
(Options::~Options): Update.
* src/options.h (UPPERLOWER): New enum value.
* src/options.cc (Options::long_usage): Document option --ignore-case.
(Options::~Options): Update.

155
src/options.cc
View File

@@ -61,18 +61,17 @@ static const char *const DEFAULT_WORDLIST_NAME = "wordlist";
/* Default delimiters that separate keywords from their attributes. */
static const char *const DEFAULT_DELIMITERS = ",";
/* Prints program usage to given stream. */
/* Prints program usage to given stream. */
void
Options::short_usage (FILE * stream) const
Options::short_usage (FILE * stream)
{
fprintf (stream, "Usage: %s [-cCdDef[num]F<initializers>GhH<hashname>i<init>Ij<jump>k<keys>K<keyname>lL<language>m<num>nN<function name>oPrs<size>S<switches>tTvW<wordlistname>Z<class name>7] [input-file]\n"
"Try '%s --help' for more information.\n",
program_name, program_name);
fprintf (stream,
"Try '%s --help' for more information.\n", program_name);
}
void
Options::long_usage (FILE * stream) const
Options::long_usage (FILE * stream)
{
fprintf (stream,
"GNU 'gperf' generates perfect hash functions.\n");
@@ -254,11 +253,9 @@ Options::long_usage (FILE * stream) const
void
Options::print_options () const
{
int i;
printf ("/* Command-line: ");
for (i = 0; i < _argument_count; i++)
for (int i = 0; i < _argument_count; i++)
{
const char *arg = _argument_vector[i];
@@ -272,6 +269,20 @@ Options::print_options () const
putchar (*arg);
arg++;
}
else if (*arg == '-')
{
do
{
putchar (*arg);
arg++;
}
while (*arg >= 'A' && *arg <= 'Z' || *arg >= 'a' && *arg <= 'z' || *arg == '-');
if (*arg == '=')
{
putchar (*arg);
arg++;
}
}
}
if (strpbrk (arg, "\t\n !\"#$&'()*;<>?[\\]`{|}~") != NULL)
{
@@ -419,7 +430,7 @@ PositionStringParser::nextPosition ()
/* ------------------------------------------------------------------------- */
/* Sets the default Options. */
/* Sets the default Options. */
Options::Options ()
: _option_word (C),
@@ -442,32 +453,33 @@ Options::Options ()
{
}
/* Dumps option status when debug is set. */
/* Dumps option status when debugging is enabled. */
Options::~Options ()
{
if (_option_word & DEBUG)
{
fprintf (stderr, "\ndumping Options:"
"\nDEBUG is.......: %s"
"\nTYPE is........: %s"
"\nRANDOM is......: %s"
"\nSWITCH is......: %s"
"\nNOLENGTH is....: %s"
"\nLENTABLE is....: %s"
"\nDUP is.........: %s"
"\nCOMP is........: %s"
"\nNOTYPE is......: %s"
"\nGLOBAL is......: %s"
"\nCONST is.......: %s"
"\nUPPERLOWER is..: %s"
"\nKRC is.........: %s"
"\nC is...........: %s"
"\nANSIC is.......: %s"
"\nCPLUSPLUS is...: %s"
"\nSEVENBIT is....: %s"
"\nLENTABLE is....: %s"
"\nCOMP is........: %s"
"\nCONST is.......: %s"
"\nENUM is........: %s"
"\nINCLUDE is.....: %s"
"\nSEVENBIT is....: %s"
"\nUPPERLOWER is..: %s"
"\nGLOBAL is......: %s"
"\nSHAREDLIB is...: %s"
"\nSWITCH is......: %s"
"\nNOTYPE is......: %s"
"\nDUP is.........: %s"
"\nNOLENGTH is....: %s"
"\nRANDOM is......: %s"
"\nDEBUG is.......: %s"
"\nlookup function name = %s"
"\nhash function name = %s"
"\nword list name = %s"
@@ -479,25 +491,26 @@ Options::~Options ()
"\ninitial associated value = %d"
"\ndelimiters = %s"
"\nnumber of switch statements = %d\n",
_option_word & DEBUG ? "enabled" : "disabled",
_option_word & TYPE ? "enabled" : "disabled",
_option_word & RANDOM ? "enabled" : "disabled",
_option_word & SWITCH ? "enabled" : "disabled",
_option_word & NOLENGTH ? "enabled" : "disabled",
_option_word & LENTABLE ? "enabled" : "disabled",
_option_word & DUP ? "enabled" : "disabled",
_option_word & COMP ? "enabled" : "disabled",
_option_word & NOTYPE ? "enabled" : "disabled",
_option_word & GLOBAL ? "enabled" : "disabled",
_option_word & CONST ? "enabled" : "disabled",
_option_word & UPPERLOWER ? "enabled" : "disabled",
_option_word & KRC ? "enabled" : "disabled",
_option_word & C ? "enabled" : "disabled",
_option_word & ANSIC ? "enabled" : "disabled",
_option_word & CPLUSPLUS ? "enabled" : "disabled",
_option_word & SEVENBIT ? "enabled" : "disabled",
_option_word & LENTABLE ? "enabled" : "disabled",
_option_word & COMP ? "enabled" : "disabled",
_option_word & CONST ? "enabled" : "disabled",
_option_word & ENUM ? "enabled" : "disabled",
_option_word & INCLUDE ? "enabled" : "disabled",
_option_word & SEVENBIT ? "enabled" : "disabled",
_option_word & UPPERLOWER ? "enabled" : "disabled",
_option_word & GLOBAL ? "enabled" : "disabled",
_option_word & SHAREDLIB ? "enabled" : "disabled",
_option_word & SWITCH ? "enabled" : "disabled",
_option_word & NOTYPE ? "enabled" : "disabled",
_option_word & DUP ? "enabled" : "disabled",
_option_word & NOLENGTH ? "enabled" : "disabled",
_option_word & RANDOM ? "enabled" : "disabled",
_option_word & DEBUG ? "enabled" : "disabled",
_function_name, _hash_name, _wordlist_name, _slot_name,
_initializer_suffix, _asso_iterations, _jump, _size_multiple,
_initial_asso_value, _delimiters, _total_switches);
@@ -606,7 +619,7 @@ Options::set_delimiters (const char *delimiters)
}
/* Parses the command line Options and sets appropriate flags in option_word. */
/* Parses the command line Options and sets appropriate flags in option_word. */
static const struct option long_options[] =
{
@@ -668,26 +681,26 @@ Options::parse_options (int argc, char *argv[])
{
switch (option_char)
{
case 'a': /* Generated code uses the ANSI prototype format. */
break; /* This is now the default. */
case 'c': /* Generate strncmp rather than strcmp. */
case 'a': /* Generated code uses the ANSI prototype format. */
break; /* This is now the default. */
case 'c': /* Generate strncmp rather than strcmp. */
{
_option_word |= COMP;
break;
}
case 'C': /* Make the generated tables readonly (const). */
case 'C': /* Make the generated tables readonly (const). */
{
_option_word |= CONST;
break;
}
case 'd': /* Enable debugging option. */
case 'd': /* Enable debugging option. */
{
_option_word |= DEBUG;
fprintf (stderr, "Starting program %s, version %s, with debugging on.\n",
program_name, version_string);
break;
}
case 'D': /* Enable duplicate option. */
case 'D': /* Enable duplicate option. */
{
_option_word |= DUP;
break;
@@ -702,31 +715,31 @@ Options::parse_options (int argc, char *argv[])
_option_word |= ENUM;
break;
}
case 'f': /* Generate the hash table "fast". */
case 'f': /* Generate the hash table "fast". */
break; /* Not needed any more. */
case 'F':
{
_initializer_suffix = /*getopt*/optarg;
break;
}
case 'g': /* Use the 'inline' keyword for generated sub-routines, ifdef __GNUC__. */
break; /* This is now the default. */
case 'G': /* Make the keyword table a global variable. */
case 'g': /* Use the 'inline' keyword for generated sub-routines, ifdef __GNUC__. */
break; /* This is now the default. */
case 'G': /* Make the keyword table a global variable. */
{
_option_word |= GLOBAL;
break;
}
case 'h': /* Displays a list of helpful Options to the user. */
case 'h': /* Displays a list of helpful Options to the user. */
{
long_usage (stdout);
exit (0);
}
case 'H': /* Sets the name for the hash function */
case 'H': /* Sets the name for the hash function. */
{
_hash_name = /*getopt*/optarg;
break;
}
case 'i': /* Sets the initial value for the associated values array. */
case 'i': /* Sets the initial value for the associated values array. */
{
if ((_initial_asso_value = atoi (/*getopt*/optarg)) < 0)
fprintf (stderr, "Initial value %d should be non-zero, ignoring and continuing.\n", _initial_asso_value);
@@ -734,12 +747,12 @@ Options::parse_options (int argc, char *argv[])
fprintf (stderr, "warning, -r option superceeds -i, ignoring -i option and continuing\n");
break;
}
case 'I': /* Enable #include statements. */
case 'I': /* Enable #include statements. */
{
_option_word |= INCLUDE;
break;
}
case 'j': /* Sets the jump value, must be odd for later algorithms. */
case 'j': /* Sets the jump value, must be odd for later algorithms. */
{
if ((_jump = atoi (/*getopt*/optarg)) < 0)
{
@@ -751,7 +764,7 @@ Options::parse_options (int argc, char *argv[])
fprintf (stderr, "Jump value %d should be odd, adding 1 and continuing...\n", _jump++);
break;
}
case 'k': /* Sets key positions used for hash function. */
case 'k': /* Sets key positions used for hash function. */
{
_option_word |= POSITIONS;
const int BAD_VALUE = -2;
@@ -809,17 +822,17 @@ Options::parse_options (int argc, char *argv[])
}
break;
}
case 'K': /* Make this the keyname for the keyword component field. */
case 'K': /* Make this the keyname for the keyword component field. */
{
_slot_name = /*getopt*/optarg;
break;
}
case 'l': /* Create length table to avoid extra string compares. */
case 'l': /* Create length table to avoid extra string compares. */
{
_option_word |= LENTABLE;
break;
}
case 'L': /* Deal with different generated languages. */
case 'L': /* Deal with different generated languages. */
{
_language = NULL;
set_language (/*getopt*/optarg);
@@ -834,35 +847,35 @@ Options::parse_options (int argc, char *argv[])
}
break;
}
case 'n': /* Don't include the length when computing hash function. */
case 'n': /* Don't include the length when computing hash function. */
{
_option_word |= NOLENGTH;
break;
}
case 'N': /* Make generated lookup function name be optarg */
case 'N': /* Make generated lookup function name be optarg. */
{
_function_name = /*getopt*/optarg;
break;
}
case 'o': /* Order input by frequency of key set occurrence. */
case 'o': /* Order input by frequency of key set occurrence. */
break; /* Not needed any more. */
case 'O': /* Optimized choice during collision resolution. */
break; /* Not needed any more. */
case 'p': /* Generated lookup function a pointer instead of int. */
break; /* This is now the default. */
case 'p': /* Generated lookup function a pointer instead of int. */
break; /* This is now the default. */
case 'P': /* Optimize for position-independent code. */
{
_option_word |= SHAREDLIB;
break;
}
case 'r': /* Utilize randomness to initialize the associated values table. */
case 'r': /* Utilize randomness to initialize the associated values table. */
{
_option_word |= RANDOM;
if (_initial_asso_value != 0)
fprintf (stderr, "warning, -r option superceeds -i, disabling -i option and continuing\n");
fprintf (stderr, "warning, -r option supersedes -i, disabling -i option and continuing\n");
break;
}
case 's': /* Range of associated values, determines size of final table. */
case 's': /* Range of associated values, determines size of final table. */
{
float numerator;
float denominator = 1;
@@ -904,7 +917,7 @@ Options::parse_options (int argc, char *argv[])
fprintf (stderr, "Size multiple %g is extremely small, did you really mean this?! (try '%s --help' for help)\n", _size_multiple, program_name);
break;
}
case 'S': /* Generate switch statement output, rather than lookup table. */
case 'S': /* Generate switch statement output, rather than lookup table. */
{
_option_word |= SWITCH;
_total_switches = atoi (/*getopt*/optarg);
@@ -916,17 +929,17 @@ Options::parse_options (int argc, char *argv[])
}
break;
}
case 't': /* Enable the TYPE mode, allowing arbitrary user structures. */
case 't': /* Enable the TYPE mode, allowing arbitrary user structures. */
{
_option_word |= TYPE;
break;
}
case 'T': /* Don't print structure definition. */
case 'T': /* Don't print structure definition. */
{
_option_word |= NOTYPE;
break;
}
case 'v': /* Print out the version and quit. */
case 'v': /* Print out the version and quit. */
fprintf (stdout, "GNU gperf %s\n", version_string);
fprintf (stdout, "Copyright (C) %s Free Software Foundation, Inc.\n\
This is free software; see the source for copying conditions. There is NO\n\
@@ -936,22 +949,22 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
fprintf (stdout, "Written by %s and %s.\n",
"Douglas C. Schmidt", "Bruno Haible");
exit (0);
case 'W': /* Sets the name for the hash table array */
case 'W': /* Sets the name for the hash table array. */
{
_wordlist_name = /*getopt*/optarg;
break;
}
case 'Z': /* Set the class name. */
case 'Z': /* Set the class name. */
{
_class_name = /*getopt*/optarg;
break;
}
case '7': /* Assume 7-bit characters. */
case '7': /* Assume 7-bit characters. */
{
_option_word |= SEVENBIT;
break;
}
case CHAR_MAX + 1: /* Set the output file name. */
case CHAR_MAX + 1: /* Set the output file name. */
{
_output_file_name = /*getopt*/optarg;
break;

110
src/options.h
View File

@@ -32,79 +32,89 @@
#include <stdio.h>
#include "positions.h"
/* Enumeration of the possible boolean options. */
/* Enumeration of the possible boolean options. */
enum Option_Type
{
/* Enable debugging (prints diagnostics to stderr). */
DEBUG = 1 << 0,
/* Use the given key positions. */
POSITIONS = 1 << 1,
/* Use all characters in hash function. */
ALLCHARS = 1 << 2,
/* --- Input file interpretation --- */
/* Handle user-defined type structured keyword input. */
TYPE = 1 << 3,
TYPE = 1 << 0,
/* Randomly initialize the associated values table. */
RANDOM = 1 << 4,
/* Ignore case of ASCII characters. */
UPPERLOWER = 1 << 1,
/* Generate switch output to save space. */
SWITCH = 1 << 5,
/* --- Language for the output code --- */
/* Don't include keyword length in hash computations. */
NOLENGTH = 1 << 6,
/* 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,
/* Handle duplicate hash values for keywords. */
DUP = 1 << 8,
/* 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,
/* Optimize for position-independent code. */
SHAREDLIB = 1 << 13,
/* Generate switch output to save space. */
SWITCH = 1 << 14,
/* Don't include user-defined type definition in output -- it's already
defined elsewhere. */
NOTYPE = 1 << 9,
NOTYPE = 1 << 15,
/* Generate strncmp rather than strcmp. */
COMP = 1 << 10,
/* --- Algorithm employed by gperf --- */
/* Make the keyword table a global variable. */
GLOBAL = 1 << 11,
/* Use the given key positions. */
POSITIONS = 1 << 16,
/* Make the generated tables readonly (const). */
CONST = 1 << 12,
/* Use all characters in hash function. */
ALLCHARS = 1 << 17,
/* Generate K&R C code: no prototypes, no const. */
KRC = 1 << 13,
/* Handle duplicate hash values for keywords. */
DUP = 1 << 18,
/* Generate C code: no prototypes, but const (user can #define it away). */
C = 1 << 14,
/* Don't include keyword length in hash computations. */
NOLENGTH = 1 << 19,
/* Generate ISO/ANSI C code: prototypes and const, but no class. */
ANSIC = 1 << 15,
/* Randomly initialize the associated values table. */
RANDOM = 1 << 20,
/* Generate C++ code: prototypes, const, class, inline, enum. */
CPLUSPLUS = 1 << 16,
/* --- Informative output --- */
/* Use enum for constants. */
ENUM = 1 << 17,
/* Generate #include statements. */
INCLUDE = 1 << 18,
/* Assume 7-bit, not 8-bit, characters. */
SEVENBIT = 1 << 19,
/* Optimize for position-independent code. */
SHAREDLIB = 1 << 20,
/* Ignore case of ASCII characters. */
UPPERLOWER = 1 << 21
/* Enable debugging (prints diagnostics to stderr). */
DEBUG = 1 << 21
};
/* Class manager for gperf program Options. */
/* Class manager for gperf program Options. */
class Options
{
@@ -193,10 +203,10 @@ public:
private:
/* Prints program usage to given stream. */
void short_usage (FILE * stream) const;
static void short_usage (FILE * stream);
/* Prints program usage to given stream. */
void long_usage (FILE * stream) const;
static void long_usage (FILE * stream);
/* Records count of command-line arguments. */
int _argument_count;