applications/recenter/recenterCmd.cpp

/*
  File autogenerated by gengetopt version 2.22.6
  generated with the following command:
  gengetopt --file-name=recenterCmd --unamed-opts 

  The developers of gengetopt consider the fixed text that goes in all
  gengetopt output files to be in the public domain:
  we make no copyright claims on it.
*/

/* If we use autoconf.  */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifndef FIX_UNUSED
#define FIX_UNUSED(X) (void) (X) /* avoid warnings for unused params */
#endif

#ifdef WIN32
#include "utils/wingetopt.h"
#else
#include <getopt.h>
#endif

#include "recenterCmd.h"

const char *gengetopt_args_info_purpose = "Moves all integrable objects in an OpenMD file so that the center of mass is at\nthe origin.";

const char *gengetopt_args_info_usage = "Usage: recenter [OPTIONS]... [FILES]...";

const char *gengetopt_args_info_versiontext = "";

const char *gengetopt_args_info_description = "";

const char *gengetopt_args_info_help[] = {
  "  -h, --help           Print help and exit",
  "  -V, --version        Print version and exit",
  "  -o, --output=STRING  Output file name",
    0
};

typedef enum {ARG_NO
  , ARG_STRING
} cmdline_parser_arg_type;

static
void clear_given (struct gengetopt_args_info *args_info);
static
void clear_args (struct gengetopt_args_info *args_info);

static int
cmdline_parser_internal (int argc, char **argv, struct gengetopt_args_info *args_info,
                        struct cmdline_parser_params *params, const char *additional_error);

static int
cmdline_parser_required2 (struct gengetopt_args_info *args_info, const char *prog_name, const char *additional_error);

static char *
gengetopt_strdup (const char *s);

static
void clear_given (struct gengetopt_args_info *args_info)
{
  args_info->help_given = 0 ;
  args_info->version_given = 0 ;
  args_info->output_given = 0 ;
}

static
void clear_args (struct gengetopt_args_info *args_info)
{
  FIX_UNUSED (args_info);
  args_info->output_arg = NULL;
  args_info->output_orig = NULL;
  
}

static
void init_args_info(struct gengetopt_args_info *args_info)
{


  args_info->help_help = gengetopt_args_info_help[0] ;
  args_info->version_help = gengetopt_args_info_help[1] ;
  args_info->output_help = gengetopt_args_info_help[2] ;
  
}

void
cmdline_parser_print_version (void)
{
  printf ("%s %s\n",
     (strlen(CMDLINE_PARSER_PACKAGE_NAME) ? CMDLINE_PARSER_PACKAGE_NAME : CMDLINE_PARSER_PACKAGE),
     CMDLINE_PARSER_VERSION);

  if (strlen(gengetopt_args_info_versiontext) > 0)
    printf("\n%s\n", gengetopt_args_info_versiontext);
}

static void print_help_common(void) {
  cmdline_parser_print_version ();

  if (strlen(gengetopt_args_info_purpose) > 0)
    printf("\n%s\n", gengetopt_args_info_purpose);

  if (strlen(gengetopt_args_info_usage) > 0)
    printf("\n%s\n", gengetopt_args_info_usage);

  printf("\n");

  if (strlen(gengetopt_args_info_description) > 0)
    printf("%s\n\n", gengetopt_args_info_description);
}

void
cmdline_parser_print_help (void)
{
  int i = 0;
  print_help_common();
  while (gengetopt_args_info_help[i])
    printf("%s\n", gengetopt_args_info_help[i++]);
}

void
cmdline_parser_init (struct gengetopt_args_info *args_info)
{
  clear_given (args_info);
  clear_args (args_info);
  init_args_info (args_info);

  args_info->inputs = 0;
  args_info->inputs_num = 0;
}

void
cmdline_parser_params_init(struct cmdline_parser_params *params)
{
  if (params)
    { 
      params->override = 0;
      params->initialize = 1;
      params->check_required = 1;
      params->check_ambiguity = 0;
      params->print_errors = 1;
    }
}

struct cmdline_parser_params *
cmdline_parser_params_create(void)
{
  struct cmdline_parser_params *params = 
    (struct cmdline_parser_params *)malloc(sizeof(struct cmdline_parser_params));
  cmdline_parser_params_init(params);  
  return params;
}

static void
free_string_field (char **s)
{
  if (*s)
    {
      free (*s);
      *s = 0;
    }
}


static void
cmdline_parser_release (struct gengetopt_args_info *args_info)
{
  unsigned int i;
  free_string_field (&(args_info->output_arg));
  free_string_field (&(args_info->output_orig));
  
  
  for (i = 0; i < args_info->inputs_num; ++i)
    free (args_info->inputs [i]);

  if (args_info->inputs_num)
    free (args_info->inputs);

  clear_given (args_info);
}


static void
write_into_file(FILE *outfile, const char *opt, const char *arg, const char *values[])
{
  FIX_UNUSED (values);
  if (arg) {
    fprintf(outfile, "%s=\"%s\"\n", opt, arg);
  } else {
    fprintf(outfile, "%s\n", opt);
  }
}


int
cmdline_parser_dump(FILE *outfile, struct gengetopt_args_info *args_info)
{
  int i = 0;

  if (!outfile)
    {
      fprintf (stderr, "%s: cannot dump options to stream\n", CMDLINE_PARSER_PACKAGE);
      return EXIT_FAILURE;
    }

  if (args_info->help_given)
    write_into_file(outfile, "help", 0, 0 );
  if (args_info->version_given)
    write_into_file(outfile, "version", 0, 0 );
  if (args_info->output_given)
    write_into_file(outfile, "output", args_info->output_orig, 0);
  

  i = EXIT_SUCCESS;
  return i;
}

int
cmdline_parser_file_save(const char *filename, struct gengetopt_args_info *args_info)
{
  FILE *outfile;
  int i = 0;

  outfile = fopen(filename, "w");

  if (!outfile)
    {
      fprintf (stderr, "%s: cannot open file for writing: %s\n", CMDLINE_PARSER_PACKAGE, filename);
      return EXIT_FAILURE;
    }

  i = cmdline_parser_dump(outfile, args_info);
  fclose (outfile);

  return i;
}

void
cmdline_parser_free (struct gengetopt_args_info *args_info)
{
  cmdline_parser_release (args_info);
}

/** @brief replacement of strdup, which is not standard */
char *
gengetopt_strdup (const char *s)
{
  char *result = 0;
  if (!s)
    return result;

  result = (char*)malloc(strlen(s) + 1);
  if (result == (char*)0)
    return (char*)0;
  strcpy(result, s);
  return result;
}

int
cmdline_parser (int argc, char **argv, struct gengetopt_args_info *args_info)
{
  return cmdline_parser2 (argc, argv, args_info, 0, 1, 1);
}

int
cmdline_parser_ext (int argc, char **argv, struct gengetopt_args_info *args_info,
                   struct cmdline_parser_params *params)
{
  int result;
  result = cmdline_parser_internal (argc, argv, args_info, params, 0);

  if (result == EXIT_FAILURE)
    {
      cmdline_parser_free (args_info);
      exit (EXIT_FAILURE);
    }
  
  return result;
}

int
cmdline_parser2 (int argc, char **argv, struct gengetopt_args_info *args_info, int override, int initialize, int check_required)
{
  int result;
  struct cmdline_parser_params params;
  
  params.override = override;
  params.initialize = initialize;
  params.check_required = check_required;
  params.check_ambiguity = 0;
  params.print_errors = 1;

  result = cmdline_parser_internal (argc, argv, args_info, &params, 0);

  if (result == EXIT_FAILURE)
    {
      cmdline_parser_free (args_info);
      exit (EXIT_FAILURE);
    }
  
  return result;
}

int
cmdline_parser_required (struct gengetopt_args_info *args_info, const char *prog_name)
{
  int result = EXIT_SUCCESS;

  if (cmdline_parser_required2(args_info, prog_name, 0) > 0)
    result = EXIT_FAILURE;

  if (result == EXIT_FAILURE)
    {
      cmdline_parser_free (args_info);
      exit (EXIT_FAILURE);
    }
  
  return result;
}

int
cmdline_parser_required2 (struct gengetopt_args_info *args_info, const char *prog_name, const char *additional_error)
{
  int error_occurred = 0;
  FIX_UNUSED (additional_error);

  /* checks for required options */
  if (! args_info->output_given)
    {
      fprintf (stderr, "%s: '--output' ('-o') option required%s\n", prog_name, (additional_error ? additional_error : ""));
      error_occurred = 1;
    }
  
  
  /* checks for dependences among options */

  return error_occurred;
}


static char *package_name = 0;

/**
 * @brief updates an option
 * @param field the generic pointer to the field to update
 * @param orig_field the pointer to the orig field
 * @param field_given the pointer to the number of occurrence of this option
 * @param prev_given the pointer to the number of occurrence already seen
 * @param value the argument for this option (if null no arg was specified)
 * @param possible_values the possible values for this option (if specified)
 * @param default_value the default value (in case the option only accepts fixed values)
 * @param arg_type the type of this option
 * @param check_ambiguity @see cmdline_parser_params.check_ambiguity
 * @param override @see cmdline_parser_params.override
 * @param no_free whether to free a possible previous value
 * @param multiple_option whether this is a multiple option
 * @param long_opt the corresponding long option
 * @param short_opt the corresponding short option (or '-' if none)
 * @param additional_error possible further error specification
 */
static
int update_arg(void *field, char **orig_field,
               unsigned int *field_given, unsigned int *prev_given, 
               char *value, const char *possible_values[],
               const char *default_value,
               cmdline_parser_arg_type arg_type,
               int check_ambiguity, int override,
               int no_free, int multiple_option,
               const char *long_opt, char short_opt,
               const char *additional_error)
{
  char *stop_char = 0;
  const char *val = value;
  int found;
  char **string_field;
  FIX_UNUSED (field);

  stop_char = 0;
  found = 0;

  if (!multiple_option && prev_given && (*prev_given || (check_ambiguity && *field_given)))
    {
      if (short_opt != '-')
        fprintf (stderr, "%s: `--%s' (`-%c') option given more than once%s\n", 
               package_name, long_opt, short_opt,
               (additional_error ? additional_error : ""));
      else
        fprintf (stderr, "%s: `--%s' option given more than once%s\n", 
               package_name, long_opt,
               (additional_error ? additional_error : ""));
      return 1; /* failure */
    }

  FIX_UNUSED (default_value);
    
  if (field_given && *field_given && ! override)
    return 0;
  if (prev_given)
    (*prev_given)++;
  if (field_given)
    (*field_given)++;
  if (possible_values)
    val = possible_values[found];

  switch(arg_type) {
  case ARG_STRING:
    if (val) {
      string_field = (char **)field;
      if (!no_free && *string_field)
        free (*string_field); /* free previous string */
      *string_field = gengetopt_strdup (val);
    }
    break;
  default:
    break;
  };


  /* store the original value */
  switch(arg_type) {
  case ARG_NO:
    break;
  default:
    if (value && orig_field) {
      if (no_free) {
        *orig_field = value;
      } else {
        if (*orig_field)
          free (*orig_field); /* free previous string */
        *orig_field = gengetopt_strdup (value);
      }
    }
  };

  return 0; /* OK */
}


int
cmdline_parser_internal (
  int argc, char **argv, struct gengetopt_args_info *args_info,
                        struct cmdline_parser_params *params, const char *additional_error)
{
  int c;        /* Character of the parsed option.  */

  int error_occurred = 0;
  struct gengetopt_args_info local_args_info;
  
  int override;
  int initialize;
  int check_required;
  int check_ambiguity;
  
  package_name = argv[0];
  
  override = params->override;
  initialize = params->initialize;
  check_required = params->check_required;
  check_ambiguity = params->check_ambiguity;

  if (initialize)
    cmdline_parser_init (args_info);

  cmdline_parser_init (&local_args_info);

  optarg = 0;
  optind = 0;
  opterr = params->print_errors;
  optopt = '?';

  while (1)
    {
      int option_index = 0;

      static struct option long_options[] = {
        { "help",       0, NULL, 'h' },
        { "version",    0, NULL, 'V' },
        { "output",     1, NULL, 'o' },
        { 0,  0, 0, 0 }
      };

      c = getopt_long (argc, argv, "hVo:", long_options, &option_index);

      if (c == -1) break;       /* Exit from `while (1)' loop.  */

      switch (c)
        {
        case 'h':       /* Print help and exit.  */
          cmdline_parser_print_help ();
          cmdline_parser_free (&local_args_info);
          exit (EXIT_SUCCESS);

        case 'V':       /* Print version and exit.  */
          cmdline_parser_print_version ();
          cmdline_parser_free (&local_args_info);
          exit (EXIT_SUCCESS);

        case 'o':       /* Output file name.  */
        
        
          if (update_arg( (void *)&(args_info->output_arg), 
               &(args_info->output_orig), &(args_info->output_given),
              &(local_args_info.output_given), optarg, 0, 0, ARG_STRING,
              check_ambiguity, override, 0, 0,
              "output", 'o',
              additional_error))
            goto failure;
        
          break;

        case 0: /* Long option with no short option */
        case '?':       /* Invalid option.  */
          /* `getopt_long' already printed an error message.  */
          goto failure;

        default:        /* bug: option not considered.  */
          fprintf (stderr, "%s: option unknown: %c%s\n", CMDLINE_PARSER_PACKAGE, c, (additional_error ? additional_error : ""));
          abort ();
        } /* switch */
    } /* while */


  if (check_required)
    {
      error_occurred += cmdline_parser_required2 (args_info, argv[0], additional_error);
    }

  cmdline_parser_release (&local_args_info);

  if ( error_occurred )
    return (EXIT_FAILURE);

  if (optind < argc)
    {
      int i = 0 ;
      int found_prog_name = 0;
      /* whether program name, i.e., argv[0], is in the remaining args
         (this may happen with some implementations of getopt,
          but surely not with the one included by gengetopt) */

      i = optind;
      while (i < argc)
        if (argv[i++] == argv[0]) {
          found_prog_name = 1;
          break;
        }
      i = 0;

      args_info->inputs_num = argc - optind - found_prog_name;
      args_info->inputs =
        (char **)(malloc ((args_info->inputs_num)*sizeof(char *))) ;
      while (optind < argc)
        if (argv[optind++] != argv[0])
          args_info->inputs[ i++ ] = gengetopt_strdup (argv[optind-1]) ;
    }

  return 0;

failure:
  
  cmdline_parser_release (&local_args_info);
  return (EXIT_FAILURE);
}
Revision:	2073
Committed:	Sat Mar 7 23:52:07 2015 UTC (10 years, 1 month ago) by gezelter
File size:	14281 byte(s)
Log Message:	added a skipToken function to StringTokenizer, and used this to remove some silly warnings on compilation.
#	Content
1	/*
2	File autogenerated by gengetopt version 2.22.6
3	generated with the following command:
4	gengetopt --file-name=recenterCmd --unamed-opts
5
6	The developers of gengetopt consider the fixed text that goes in all
7	gengetopt output files to be in the public domain:
8	we make no copyright claims on it.
9	*/
10
11	/* If we use autoconf. */
12	#ifdef HAVE_CONFIG_H
13	#include "config.h"
14	#endif
15
16	#include <stdio.h>
17	#include <stdlib.h>
18	#include <string.h>
19
20	#ifndef FIX_UNUSED
21	#define FIX_UNUSED(X) (void) (X) /* avoid warnings for unused params */
22	#endif
23
24	#ifdef WIN32
25	#include "utils/wingetopt.h"
26	#else
27	#include <getopt.h>
28	#endif
29
30	#include "recenterCmd.h"
31
32	const char *gengetopt_args_info_purpose = "Moves all integrable objects in an OpenMD file so that the center of mass is at\nthe origin.";
33
34	const char *gengetopt_args_info_usage = "Usage: recenter [OPTIONS]... [FILES]...";
35
36	const char *gengetopt_args_info_versiontext = "";
37
38	const char *gengetopt_args_info_description = "";
39
40	const char *gengetopt_args_info_help[] = {
41	" -h, --help Print help and exit",
42	" -V, --version Print version and exit",
43	" -o, --output=STRING Output file name",
44	0
45	};
46
47	typedef enum {ARG_NO
48	, ARG_STRING
49	} cmdline_parser_arg_type;
50
51	static
52	void clear_given (struct gengetopt_args_info *args_info);
53	static
54	void clear_args (struct gengetopt_args_info *args_info);
55
56	static int
57	cmdline_parser_internal (int argc, char *argv, struct gengetopt_args_info args_info,
58	struct cmdline_parser_params params, const char additional_error);
59
60	static int
61	cmdline_parser_required2 (struct gengetopt_args_info args_info, const char prog_name, const char *additional_error);
62
63	static char *
64	gengetopt_strdup (const char *s);
65
66	static
67	void clear_given (struct gengetopt_args_info *args_info)
68	{
69	args_info->help_given = 0 ;
70	args_info->version_given = 0 ;
71	args_info->output_given = 0 ;
72	}
73
74	static
75	void clear_args (struct gengetopt_args_info *args_info)
76	{
77	FIX_UNUSED (args_info);
78	args_info->output_arg = NULL;
79	args_info->output_orig = NULL;
80
81	}
82
83	static
84	void init_args_info(struct gengetopt_args_info *args_info)
85	{
86
87
88	args_info->help_help = gengetopt_args_info_help[0] ;
89	args_info->version_help = gengetopt_args_info_help[1] ;
90	args_info->output_help = gengetopt_args_info_help[2] ;
91
92	}
93
94	void
95	cmdline_parser_print_version (void)
96	{
97	printf ("%s %s\n",
98	(strlen(CMDLINE_PARSER_PACKAGE_NAME) ? CMDLINE_PARSER_PACKAGE_NAME : CMDLINE_PARSER_PACKAGE),
99	CMDLINE_PARSER_VERSION);
100
101	if (strlen(gengetopt_args_info_versiontext) > 0)
102	printf("\n%s\n", gengetopt_args_info_versiontext);
103	}
104
105	static void print_help_common(void) {
106	cmdline_parser_print_version ();
107
108	if (strlen(gengetopt_args_info_purpose) > 0)
109	printf("\n%s\n", gengetopt_args_info_purpose);
110
111	if (strlen(gengetopt_args_info_usage) > 0)
112	printf("\n%s\n", gengetopt_args_info_usage);
113
114	printf("\n");
115
116	if (strlen(gengetopt_args_info_description) > 0)
117	printf("%s\n\n", gengetopt_args_info_description);
118	}
119
120	void
121	cmdline_parser_print_help (void)
122	{
123	int i = 0;
124	print_help_common();
125	while (gengetopt_args_info_help[i])
126	printf("%s\n", gengetopt_args_info_help[i++]);
127	}
128
129	void
130	cmdline_parser_init (struct gengetopt_args_info *args_info)
131	{
132	clear_given (args_info);
133	clear_args (args_info);
134	init_args_info (args_info);
135
136	args_info->inputs = 0;
137	args_info->inputs_num = 0;
138	}
139
140	void
141	cmdline_parser_params_init(struct cmdline_parser_params *params)
142	{
143	if (params)
144	{
145	params->override = 0;
146	params->initialize = 1;
147	params->check_required = 1;
148	params->check_ambiguity = 0;
149	params->print_errors = 1;
150	}
151	}
152
153	struct cmdline_parser_params *
154	cmdline_parser_params_create(void)
155	{
156	struct cmdline_parser_params *params =
157	(struct cmdline_parser_params *)malloc(sizeof(struct cmdline_parser_params));
158	cmdline_parser_params_init(params);
159	return params;
160	}
161
162	static void
163	free_string_field (char **s)
164	{
165	if (*s)
166	{
167	free (*s);
168	*s = 0;
169	}
170	}
171
172
173	static void
174	cmdline_parser_release (struct gengetopt_args_info *args_info)
175	{
176	unsigned int i;
177	free_string_field (&(args_info->output_arg));
178	free_string_field (&(args_info->output_orig));
179
180
181	for (i = 0; i < args_info->inputs_num; ++i)
182	free (args_info->inputs [i]);
183
184	if (args_info->inputs_num)
185	free (args_info->inputs);
186
187	clear_given (args_info);
188	}
189
190
191	static void
192	write_into_file(FILE outfile, const char opt, const char arg, const char values[])
193	{
194	FIX_UNUSED (values);
195	if (arg) {
196	fprintf(outfile, "%s=\"%s\"\n", opt, arg);
197	} else {
198	fprintf(outfile, "%s\n", opt);
199	}
200	}
201
202
203	int
204	cmdline_parser_dump(FILE outfile, struct gengetopt_args_info args_info)
205	{
206	int i = 0;
207
208	if (!outfile)
209	{
210	fprintf (stderr, "%s: cannot dump options to stream\n", CMDLINE_PARSER_PACKAGE);
211	return EXIT_FAILURE;
212	}
213
214	if (args_info->help_given)
215	write_into_file(outfile, "help", 0, 0 );
216	if (args_info->version_given)
217	write_into_file(outfile, "version", 0, 0 );
218	if (args_info->output_given)
219	write_into_file(outfile, "output", args_info->output_orig, 0);
220
221
222	i = EXIT_SUCCESS;
223	return i;
224	}
225
226	int
227	cmdline_parser_file_save(const char filename, struct gengetopt_args_info args_info)
228	{
229	FILE *outfile;
230	int i = 0;
231
232	outfile = fopen(filename, "w");
233
234	if (!outfile)
235	{
236	fprintf (stderr, "%s: cannot open file for writing: %s\n", CMDLINE_PARSER_PACKAGE, filename);
237	return EXIT_FAILURE;
238	}
239
240	i = cmdline_parser_dump(outfile, args_info);
241	fclose (outfile);
242
243	return i;
244	}
245
246	void
247	cmdline_parser_free (struct gengetopt_args_info *args_info)
248	{
249	cmdline_parser_release (args_info);
250	}
251
252	/** @brief replacement of strdup, which is not standard */
253	char *
254	gengetopt_strdup (const char *s)
255	{
256	char *result = 0;
257	if (!s)
258	return result;
259
260	result = (char*)malloc(strlen(s) + 1);
261	if (result == (char*)0)
262	return (char*)0;
263	strcpy(result, s);
264	return result;
265	}
266
267	int
268	cmdline_parser (int argc, char *argv, struct gengetopt_args_info args_info)
269	{
270	return cmdline_parser2 (argc, argv, args_info, 0, 1, 1);
271	}
272
273	int
274	cmdline_parser_ext (int argc, char *argv, struct gengetopt_args_info args_info,
275	struct cmdline_parser_params *params)
276	{
277	int result;
278	result = cmdline_parser_internal (argc, argv, args_info, params, 0);
279
280	if (result == EXIT_FAILURE)
281	{
282	cmdline_parser_free (args_info);
283	exit (EXIT_FAILURE);
284	}
285
286	return result;
287	}
288
289	int
290	cmdline_parser2 (int argc, char *argv, struct gengetopt_args_info args_info, int override, int initialize, int check_required)
291	{
292	int result;
293	struct cmdline_parser_params params;
294
295	params.override = override;
296	params.initialize = initialize;
297	params.check_required = check_required;
298	params.check_ambiguity = 0;
299	params.print_errors = 1;
300
301	result = cmdline_parser_internal (argc, argv, args_info, &params, 0);
302
303	if (result == EXIT_FAILURE)
304	{
305	cmdline_parser_free (args_info);
306	exit (EXIT_FAILURE);
307	}
308
309	return result;
310	}
311
312	int
313	cmdline_parser_required (struct gengetopt_args_info args_info, const char prog_name)
314	{
315	int result = EXIT_SUCCESS;
316
317	if (cmdline_parser_required2(args_info, prog_name, 0) > 0)
318	result = EXIT_FAILURE;
319
320	if (result == EXIT_FAILURE)
321	{
322	cmdline_parser_free (args_info);
323	exit (EXIT_FAILURE);
324	}
325
326	return result;
327	}
328
329	int
330	cmdline_parser_required2 (struct gengetopt_args_info args_info, const char prog_name, const char *additional_error)
331	{
332	int error_occurred = 0;
333	FIX_UNUSED (additional_error);
334
335	/* checks for required options */
336	if (! args_info->output_given)
337	{
338	fprintf (stderr, "%s: '--output' ('-o') option required%s\n", prog_name, (additional_error ? additional_error : ""));
339	error_occurred = 1;
340	}
341
342
343	/* checks for dependences among options */
344
345	return error_occurred;
346	}
347
348
349	static char *package_name = 0;
350
351	/**
352	* @brief updates an option
353	* @param field the generic pointer to the field to update
354	* @param orig_field the pointer to the orig field
355	* @param field_given the pointer to the number of occurrence of this option
356	* @param prev_given the pointer to the number of occurrence already seen
357	* @param value the argument for this option (if null no arg was specified)
358	* @param possible_values the possible values for this option (if specified)
359	* @param default_value the default value (in case the option only accepts fixed values)
360	* @param arg_type the type of this option
361	* @param check_ambiguity @see cmdline_parser_params.check_ambiguity
362	* @param override @see cmdline_parser_params.override
363	* @param no_free whether to free a possible previous value
364	* @param multiple_option whether this is a multiple option
365	* @param long_opt the corresponding long option
366	* @param short_opt the corresponding short option (or '-' if none)
367	* @param additional_error possible further error specification
368	*/
369	static
370	int update_arg(void field, char *orig_field,
371	unsigned int field_given, unsigned int prev_given,
372	char value, const char possible_values[],
373	const char *default_value,
374	cmdline_parser_arg_type arg_type,
375	int check_ambiguity, int override,
376	int no_free, int multiple_option,
377	const char *long_opt, char short_opt,
378	const char *additional_error)
379	{
380	char *stop_char = 0;
381	const char *val = value;
382	int found;
383	char **string_field;
384	FIX_UNUSED (field);
385
386	stop_char = 0;
387	found = 0;
388
389	if (!multiple_option && prev_given && (prev_given \|\| (check_ambiguity && field_given)))
390	{
391	if (short_opt != '-')
392	fprintf (stderr, "%s: `--%s' (`-%c') option given more than once%s\n",
393	package_name, long_opt, short_opt,
394	(additional_error ? additional_error : ""));
395	else
396	fprintf (stderr, "%s: `--%s' option given more than once%s\n",
397	package_name, long_opt,
398	(additional_error ? additional_error : ""));
399	return 1; /* failure */
400	}
401
402	FIX_UNUSED (default_value);
403
404	if (field_given && *field_given && ! override)
405	return 0;
406	if (prev_given)
407	(*prev_given)++;
408	if (field_given)
409	(*field_given)++;
410	if (possible_values)
411	val = possible_values[found];
412
413	switch(arg_type) {
414	case ARG_STRING:
415	if (val) {
416	string_field = (char **)field;
417	if (!no_free && *string_field)
418	free (string_field); / free previous string */
419	*string_field = gengetopt_strdup (val);
420	}
421	break;
422	default:
423	break;
424	};
425
426
427	/* store the original value */
428	switch(arg_type) {
429	case ARG_NO:
430	break;
431	default:
432	if (value && orig_field) {
433	if (no_free) {
434	*orig_field = value;
435	} else {
436	if (*orig_field)
437	free (orig_field); / free previous string */
438	*orig_field = gengetopt_strdup (value);
439	}
440	}
441	};
442
443	return 0; /* OK */
444	}
445
446
447	int
448	cmdline_parser_internal (
449	int argc, char *argv, struct gengetopt_args_info args_info,
450	struct cmdline_parser_params params, const char additional_error)
451	{
452	int c; /* Character of the parsed option. */
453
454	int error_occurred = 0;
455	struct gengetopt_args_info local_args_info;
456
457	int override;
458	int initialize;
459	int check_required;
460	int check_ambiguity;
461
462	package_name = argv[0];
463
464	override = params->override;
465	initialize = params->initialize;
466	check_required = params->check_required;
467	check_ambiguity = params->check_ambiguity;
468
469	if (initialize)
470	cmdline_parser_init (args_info);
471
472	cmdline_parser_init (&local_args_info);
473
474	optarg = 0;
475	optind = 0;
476	opterr = params->print_errors;
477	optopt = '?';
478
479	while (1)
480	{
481	int option_index = 0;
482
483	static struct option long_options[] = {
484	{ "help", 0, NULL, 'h' },
485	{ "version", 0, NULL, 'V' },
486	{ "output", 1, NULL, 'o' },
487	{ 0, 0, 0, 0 }
488	};
489
490	c = getopt_long (argc, argv, "hVo:", long_options, &option_index);
491
492	if (c == -1) break; /* Exit from `while (1)' loop. */
493
494	switch (c)
495	{
496	case 'h': /* Print help and exit. */
497	cmdline_parser_print_help ();
498	cmdline_parser_free (&local_args_info);
499	exit (EXIT_SUCCESS);
500
501	case 'V': /* Print version and exit. */
502	cmdline_parser_print_version ();
503	cmdline_parser_free (&local_args_info);
504	exit (EXIT_SUCCESS);
505
506	case 'o': /* Output file name. */
507
508
509	if (update_arg( (void *)&(args_info->output_arg),
510	&(args_info->output_orig), &(args_info->output_given),
511	&(local_args_info.output_given), optarg, 0, 0, ARG_STRING,
512	check_ambiguity, override, 0, 0,
513	"output", 'o',
514	additional_error))
515	goto failure;
516
517	break;
518
519	case 0: /* Long option with no short option */
520	case '?': /* Invalid option. */
521	/* `getopt_long' already printed an error message. */
522	goto failure;
523
524	default: /* bug: option not considered. */
525	fprintf (stderr, "%s: option unknown: %c%s\n", CMDLINE_PARSER_PACKAGE, c, (additional_error ? additional_error : ""));
526	abort ();
527	} /* switch */
528	} /* while */
529
530
531
532	if (check_required)
533	{
534	error_occurred += cmdline_parser_required2 (args_info, argv[0], additional_error);
535	}
536
537	cmdline_parser_release (&local_args_info);
538
539	if ( error_occurred )
540	return (EXIT_FAILURE);
541
542	if (optind < argc)
543	{
544	int i = 0 ;
545	int found_prog_name = 0;
546	/* whether program name, i.e., argv[0], is in the remaining args
547	(this may happen with some implementations of getopt,
548	but surely not with the one included by gengetopt) */
549
550	i = optind;
551	while (i < argc)
552	if (argv[i++] == argv[0]) {
553	found_prog_name = 1;
554	break;
555	}
556	i = 0;
557
558	args_info->inputs_num = argc - optind - found_prog_name;
559	args_info->inputs =
560	(char *)(malloc ((args_info->inputs_num)sizeof(char *))) ;
561	while (optind < argc)
562	if (argv[optind++] != argv[0])
563	args_info->inputs[ i++ ] = gengetopt_strdup (argv[optind-1]) ;
564	}
565
566	return 0;
567
568	failure:
569
570	cmdline_parser_release (&local_args_info);
571	return (EXIT_FAILURE);
572	}