popt.h

Rsync 3.0.5 source code

 * @return		current argument, NULL if no argument is available
 */
/*@observer@*/ /*@null@*/ /*@unused@*/
const char * poptPeekArg(/*@null@*/poptContext con)
	/*@*/;

/** \ingroup popt
 * Return remaining arguments.
 * @param con		context
 * @return		argument array, NULL terminated
 */
/*@observer@*/ /*@null@*/
const char ** poptGetArgs(/*@null@*/poptContext con)
	/*@modifies con @*/;

/** \ingroup popt
 * Return the option which caused the most recent error.
 * @param con		context
 * @param flags
 * @return		offending option
 */
/*@observer@*/
const char * poptBadOption(/*@null@*/poptContext con, int flags)
	/*@*/;

/** \ingroup popt
 * Destroy context.
 * @param con		context
 * @return		NULL always
 */
/*@null@*/
poptContext poptFreeContext( /*@only@*/ /*@null@*/ poptContext con)
	/*@modifies con @*/;

/** \ingroup popt
 * Add arguments to context.
 * @param con		context
 * @param argv		argument array, NULL terminated
 * @return		0 on success, POPT_ERROR_OPTSTOODEEP on failure
 */
/*@unused@*/
int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv)
	/*@modifies con @*/;

/** \ingroup popt
 * Add alias to context.
 * @todo Pass alias by reference, not value.
 * @deprecated Use poptAddItem instead.
 * @param con		context
 * @param alias		alias to add
 * @param flags		(unused)
 * @return		0 on success
 */
/*@unused@*/
int poptAddAlias(poptContext con, struct poptAlias alias, int flags)
	/*@modifies con @*/;

/** \ingroup popt
 * Add alias/exec item to context.
 * @param con		context
 * @param newItem	alias/exec item to add
 * @param flags		0 for alias, 1 for exec
 * @return		0 on success
 */
int poptAddItem(poptContext con, poptItem newItem, int flags)
	/*@modifies con @*/;

/** \ingroup popt
 * Read configuration file.
 * @param con		context
 * @param fn		file name to read
 * @return		0 on success, POPT_ERROR_ERRNO on failure
 */
int poptReadConfigFile(poptContext con, const char * fn)
	/*@globals errno, fileSystem, internalState @*/
	/*@modifies con->execs, con->numExecs,
		errno, fileSystem, internalState @*/;

/** \ingroup popt
 * Read default configuration from /etc/popt and $HOME/.popt.
 * @param con		context
 * @param useEnv	(unused)
 * @return		0 on success, POPT_ERROR_ERRNO on failure
 */
/*@unused@*/
int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
	/*@globals fileSystem, internalState @*/
	/*@modifies con->execs, con->numExecs,
		fileSystem, internalState @*/;

/** \ingroup popt
 * Duplicate an argument array.
 * @note: The argument array is malloc'd as a single area, so only argv must
 * be free'd.
 *
 * @param argc		no. of arguments
 * @param argv		argument array
 * @retval argcPtr	address of returned no. of arguments
 * @retval argvPtr	address of returned argument array
 * @return		0 on success, POPT_ERROR_NOARG on failure
 */
int poptDupArgv(int argc, /*@null@*/ const char **argv,
		/*@null@*/ /*@out@*/ int * argcPtr,
		/*@null@*/ /*@out@*/ const char *** argvPtr)
	/*@modifies *argcPtr, *argvPtr @*/;

/** \ingroup popt
 * Parse a string into an argument array.
 * The parse allows ', ", and \ quoting, but ' is treated the same as " and
 * both may include \ quotes.
 * @note: The argument array is malloc'd as a single area, so only argv must
 * be free'd.
 *
 * @param s		string to parse
 * @retval argcPtr	address of returned no. of arguments
 * @retval argvPtr	address of returned argument array
 */
int poptParseArgvString(const char * s,
		/*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr)
	/*@modifies *argcPtr, *argvPtr @*/;

/** \ingroup popt
 * Parses an input configuration file and returns an string that is a 
 * command line.  For use with popt.  You must free the return value when done.
 *
 * Given the file:
\verbatim
# this line is ignored
    #   this one too
aaa
  bbb
    ccc   
bla=bla

this_is   =   fdsafdas
     bad_line=        
  reall bad line  
  reall bad line  = again
5555=   55555   
  test = with lots of spaces
\endverbatim
*
* The result is:
\verbatim
--aaa --bbb --ccc --bla="bla" --this_is="fdsafdas" --5555="55555" --test="with lots of spaces"
\endverbatim
*
* Passing this to poptParseArgvString() yields an argv of:
\verbatim
'--aaa'
'--bbb' 
'--ccc' 
'--bla=bla' 
'--this_is=fdsafdas' 
'--5555=55555' 
'--test=with lots of spaces' 
\endverbatim
 *
 * @bug NULL is returned if file line is too long.
 * @bug Silently ignores invalid lines.
 *
 * @param fp		file handle to read
 * @param *argstrp	return string of options (malloc'd)
 * @param flags		unused
 * @return		0 on success
 * @see			poptParseArgvString
 */
/*@-fcnuse@*/
int poptConfigFileToString(FILE *fp, /*@out@*/ char ** argstrp, int flags)
	/*@globals fileSystem @*/
	/*@modifies *fp, *argstrp, fileSystem @*/;
/*@=fcnuse@*/

/** \ingroup popt
 * Return formatted error string for popt failure.
 * @param error		popt error
 * @return		error string
 */
/*@observer@*/
const char * poptStrerror(const int error)
	/*@*/;

/** \ingroup popt
 * Limit search for executables.
 * @param con		context
 * @param path		single path to search for executables
 * @param allowAbsolute	absolute paths only?
 */
/*@unused@*/
void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
	/*@modifies con @*/;

/** \ingroup popt
 * Print detailed description of options.
 * @param con		context
 * @param fp		ouput file handle
 * @param flags		(unused)
 */
void poptPrintHelp(poptContext con, FILE * fp, /*@unused@*/ int flags)
	/*@globals fileSystem @*/
	/*@modifies *fp, fileSystem @*/;

/** \ingroup popt
 * Print terse description of options.
 * @param con		context
 * @param fp		ouput file handle
 * @param flags		(unused)
 */
void poptPrintUsage(poptContext con, FILE * fp, /*@unused@*/ int flags)
	/*@globals fileSystem @*/
	/*@modifies *fp, fileSystem @*/;

/** \ingroup popt
 * Provide text to replace default "[OPTION...]" in help/usage output.
 * @param con		context
 * @param text		replacement text
 */
/*@-fcnuse@*/
void poptSetOtherOptionHelp(poptContext con, const char * text)
	/*@modifies con @*/;
/*@=fcnuse@*/

/** \ingroup popt
 * Return argv[0] from context.
 * @param con		context
 * @return		argv[0]
 */
/*@-fcnuse@*/
/*@observer@*/
const char * poptGetInvocationName(poptContext con)
	/*@*/;
/*@=fcnuse@*/

/** \ingroup popt
 * Shuffle argv pointers to remove stripped args, returns new argc.
 * @param con		context
 * @param argc		no. of args
 * @param argv		arg vector
 * @return		new argc
 */
/*@-fcnuse@*/
int poptStrippedArgv(poptContext con, int argc, char ** argv)
	/*@modifies *argv @*/;
/*@=fcnuse@*/

/**
 * Save a long, performing logical operation with value.
 * @warning Alignment check may be too strict on certain platorms.
 * @param arg		integer pointer, aligned on int boundary.
 * @param argInfo	logical operation (see POPT_ARGFLAG_*)
 * @param aLong		value to use
 * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
 */
/*@-incondefs@*/
/*@unused@*/
int poptSaveLong(/*@null@*/ long * arg, int argInfo, long aLong)
	/*@modifies *arg @*/
	/*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
/*@=incondefs@*/

/**
 * Save an integer, performing logical operation with value.
 * @warning Alignment check may be too strict on certain platorms.
 * @param arg		integer pointer, aligned on int boundary.
 * @param argInfo	logical operation (see POPT_ARGFLAG_*)
 * @param aLong		value to use
 * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
 */
/*@-incondefs@*/
/*@unused@*/
int poptSaveInt(/*@null@*/ int * arg, int argInfo, long aLong)
	/*@modifies *arg @*/
	/*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
/*@=incondefs@*/

/*@=type@*/
#ifdef  __cplusplus
}
#endif

#endif