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/** \file popt/popt.h
* \ingroup popt
*/
/* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
file accompanying popt source distributions, available from
ftp://ftp.rpm.org/pub/rpm/dist. */
#ifndef H_POPT
#define H_POPT
#include <stdio.h> /* for FILE * */
#define POPT_OPTION_DEPTH 10
/** \ingroup popt
* \name Arg type identifiers
*/
/*@{*/
#define POPT_ARG_NONE 0U /*!< no arg */
#define POPT_ARG_STRING 1U /*!< arg will be saved as string */
#define POPT_ARG_INT 2U /*!< arg ==> int */
#define POPT_ARG_LONG 3U /*!< arg ==> long */
#define POPT_ARG_INCLUDE_TABLE 4U /*!< arg points to table */
#define POPT_ARG_CALLBACK 5U /*!< table-wide callback... must be
set first in table; arg points
to callback, descrip points to
callback data to pass */
#define POPT_ARG_INTL_DOMAIN 6U /*!< set the translation domain
for this table and any
included tables; arg points
to the domain string */
#define POPT_ARG_VAL 7U /*!< arg should take value val */
#define POPT_ARG_FLOAT 8U /*!< arg ==> float */
#define POPT_ARG_DOUBLE 9U /*!< arg ==> double */
#define POPT_ARG_LONGLONG 10U /*!< arg ==> long long */
#define POPT_ARG_MAINCALL (16U+11U) /*!< EXPERIMENTAL: return (*arg) (argc, argv) */
#define POPT_ARG_ARGV 12U /*!< dupe'd arg appended to realloc'd argv array. */
#define POPT_ARG_SHORT 13U /*!< arg ==> short */
#define POPT_ARG_BITSET (16U+14U) /*!< arg ==> bit set */
#define POPT_ARG_MASK 0x000000FFU
#define POPT_GROUP_MASK 0x0000FF00U
/*@}*/
/** \ingroup popt
* \name Arg modifiers
*/
/*@{*/
#define POPT_ARGFLAG_ONEDASH 0x80000000U /*!< allow -longoption */
#define POPT_ARGFLAG_DOC_HIDDEN 0x40000000U /*!< don't show in help/usage */
#define POPT_ARGFLAG_STRIP 0x20000000U /*!< strip this arg from argv(only applies to long args) */
#define POPT_ARGFLAG_OPTIONAL 0x10000000U /*!< arg may be missing */
#define POPT_ARGFLAG_OR 0x08000000U /*!< arg will be or'ed */
#define POPT_ARGFLAG_NOR 0x09000000U /*!< arg will be nor'ed */
#define POPT_ARGFLAG_AND 0x04000000U /*!< arg will be and'ed */
#define POPT_ARGFLAG_NAND 0x05000000U /*!< arg will be nand'ed */
#define POPT_ARGFLAG_XOR 0x02000000U /*!< arg will be xor'ed */
#define POPT_ARGFLAG_NOT 0x01000000U /*!< arg will be negated */
#define POPT_ARGFLAG_LOGICALOPS \
(POPT_ARGFLAG_OR|POPT_ARGFLAG_AND|POPT_ARGFLAG_XOR)
#define POPT_BIT_SET (POPT_ARG_VAL|POPT_ARGFLAG_OR)
/*!< set arg bit(s) */
#define POPT_BIT_CLR (POPT_ARG_VAL|POPT_ARGFLAG_NAND)
/*!< clear arg bit(s) */
#define POPT_ARGFLAG_SHOW_DEFAULT 0x00800000U /*!< show default value in --help */
#define POPT_ARGFLAG_RANDOM 0x00400000U /*!< random value in [1,arg] */
#define POPT_ARGFLAG_TOGGLE 0x00200000U /*!< permit --[no]opt prefix toggle */
/*@}*/
/** \ingroup popt
* \name Callback modifiers
*/
/*@{*/
#define POPT_CBFLAG_PRE 0x80000000U /*!< call the callback before parse */
#define POPT_CBFLAG_POST 0x40000000U /*!< call the callback after parse */
#define POPT_CBFLAG_INC_DATA 0x20000000U /*!< use data from the include line,
not the subtable */
#define POPT_CBFLAG_SKIPOPTION 0x10000000U /*!< don't callback with option */
#define POPT_CBFLAG_CONTINUE 0x08000000U /*!< continue callbacks with option */
/*@}*/
/** \ingroup popt
* \name Error return values
*/
/*@{*/
#define POPT_ERROR_NOARG -10 /*!< missing argument */
#define POPT_ERROR_BADOPT -11 /*!< unknown option */
#define POPT_ERROR_OPTSTOODEEP -13 /*!< aliases nested too deeply */
#define POPT_ERROR_BADQUOTE -15 /*!< error in paramter quoting */
#define POPT_ERROR_ERRNO -16 /*!< errno set, use strerror(errno) */
#define POPT_ERROR_BADNUMBER -17 /*!< invalid numeric value */
#define POPT_ERROR_OVERFLOW -18 /*!< number too large or too small */
#define POPT_ERROR_BADOPERATION -19 /*!< mutually exclusive logical operations requested */
#define POPT_ERROR_NULLARG -20 /*!< opt->arg should not be NULL */
#define POPT_ERROR_MALLOC -21 /*!< memory allocation failed */
#define POPT_ERROR_BADCONFIG -22 /*!< config file failed sanity test */
/*@}*/
/** \ingroup popt
* \name poptBadOption() flags
*/
/*@{*/
#define POPT_BADOPTION_NOALIAS (1U << 0) /*!< don't go into an alias */
/*@}*/
/** \ingroup popt
* \name poptGetContext() flags
*/
/*@{*/
#define POPT_CONTEXT_NO_EXEC (1U << 0) /*!< ignore exec expansions */
#define POPT_CONTEXT_KEEP_FIRST (1U << 1) /*!< pay attention to argv[0] */
#define POPT_CONTEXT_POSIXMEHARDER (1U << 2) /*!< options can't follow args */
#define POPT_CONTEXT_ARG_OPTS (1U << 4) /*!< return args as options with value 0 */
/*@}*/
/** \ingroup popt
*/
struct poptOption {
const char * longName; /*!< may be NULL */
char shortName; /*!< may be NUL */
unsigned int argInfo;
void * arg; /*!< depends on argInfo */
int val; /*!< 0 means don't return, just update flag */
const char * descrip; /*!< description for autohelp -- may be NULL */
const char * argDescrip; /*!< argument description for autohelp */
};
/** \ingroup popt
* A popt alias argument for poptAddAlias().
*/
struct poptAlias {
const char * longName; /*!< may be NULL */
char shortName; /*!< may be NUL */
int argc;
const char ** argv; /*!< must be free()able */
};
/** \ingroup popt
* A popt alias or exec argument for poptAddItem().
*/
typedef struct poptItem_s {
struct poptOption option; /*!< alias/exec name(s) and description. */
int argc; /*!< (alias) no. of args. */
const char ** argv; /*!< (alias) args, must be free()able. */
} * poptItem;
/** \ingroup popt
* \name Auto-generated help/usage
*/
/*@{*/
/**
* Empty table marker to enable displaying popt alias/exec options.
*/
extern struct poptOption poptAliasOptions[];
#define POPT_AUTOALIAS { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptAliasOptions, \
0, "Options implemented via popt alias/exec:", NULL },
/**
* Auto help table options.
*/
extern struct poptOption poptHelpOptions[];
extern struct poptOption * poptHelpOptionsI18N;
#define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
0, "Help options:", NULL },
#define POPT_TABLEEND { NULL, '\0', 0, NULL, 0, NULL, NULL }
/*@}*/
/** \ingroup popt
*/
typedef struct poptContext_s * poptContext;
/** \ingroup popt
*/
#ifndef __cplusplus
typedef struct poptOption * poptOption;
#endif
/** \ingroup popt
*/
enum poptCallbackReason {
POPT_CALLBACK_REASON_PRE = 0,
POPT_CALLBACK_REASON_POST = 1,
POPT_CALLBACK_REASON_OPTION = 2
};
#ifdef __cplusplus
extern "C" {
#endif
/** \ingroup popt
* Table callback prototype.
* @param con context
* @param reason reason for callback
* @param opt option that triggered callback
* @param arg @todo Document.
* @param data @todo Document.
*/
typedef void (*poptCallbackType) (poptContext con,
enum poptCallbackReason reason,
const struct poptOption * opt,
const char * arg,
const void * data);
/** \ingroup popt
* Destroy context.
* @param con context
* @return NULL always
*/
poptContext poptFreeContext( poptContext con);
/** \ingroup popt
* Initialize popt context.
* @param name context name (usually argv[0] program name)
* @param argc no. of arguments
* @param argv argument array
* @param options address of popt option table
* @param flags or'd POPT_CONTEXT_* bits
* @return initialized popt context
*/
poptContext poptGetContext(
const char * name,
int argc, const char ** argv,
const struct poptOption * options,
unsigned int flags);
/** \ingroup popt
* Destroy context (alternative implementation).
* @param con context
* @return NULL always
*/
poptContext poptFini( poptContext con);
/** \ingroup popt
* Initialize popt context (alternative implementation).
* This routine does poptGetContext() and then poptReadConfigFiles().
* @param argc no. of arguments
* @param argv argument array
* @param options address of popt option table
* @param configPaths colon separated file path(s) to read.
* @return initialized popt context (NULL on error).
*/
poptContext poptInit(int argc, const char ** argv,
const struct poptOption * options,
const char * configPaths);
/** \ingroup popt
* Reinitialize popt context.
* @param con context
*/
void poptResetContext(poptContext con);
/** \ingroup popt
* Return value of next option found.
* @param con context
* @return next option val, -1 on last item, POPT_ERROR_* on error
*/
int poptGetNextOpt(poptContext con);
/** \ingroup popt
* Return next option argument (if any).
* @param con context
* @return option argument, NULL if no argument is available
*/
char * poptGetOptArg(poptContext con);
/** \ingroup popt
* Return next argument.
* @param con context
* @return next argument, NULL if no argument is available
*/
const char * poptGetArg(poptContext con);
/** \ingroup popt
* Peek at current argument.
* @param con context
* @return current argument, NULL if no argument is available
*/
const char * poptPeekArg(poptContext con)
/*@*/;
/** \ingroup popt
* Return remaining arguments.
* @param con context
* @return argument array, NULL terminated
*/
const char ** poptGetArgs(poptContext con);
/** \ingroup popt
* Return the option which caused the most recent error.
* @param con context
* @param flags
* @return offending option
*/
const char * poptBadOption(poptContext con, unsigned int flags)
/*@*/;
/** \ingroup popt
* Add arguments to context.
* @param con context
* @param argv argument array, NULL terminated
* @return 0 on success, POPT_ERROR_OPTSTOODEEP on failure
*/
int poptStuffArgs(poptContext con, const char ** argv);
/** \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
*/
int poptAddAlias(poptContext con, struct poptAlias alias, int flags);
/** \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);
/** \ingroup popt
* Test path/file for config file sanity (regular file, permissions etc)
* @param fn file name
* @return 1 on OK, 0 on NOTOK.
*/
int poptSaneFile(const char * fn);
/**
* Read a file into a buffer.
* @param fn file name
* @retval *bp buffer (malloc'd) (or NULL)
* @retval *nbp no. of bytes in buffer (including final NUL) (or NULL)
* @param flags 1 to trim escaped newlines
* return 0 on success
*/
int poptReadFile(const char * fn, char ** bp,
size_t * nbp, int flags);
#define POPT_READFILE_TRIMNEWLINES 1
/** \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);
/** \ingroup popt
* Read configuration file(s).
* Colon separated files to read, looping over poptReadConfigFile().
* Note that an '@' character preceeding a path in the list will
* also perform additional sanity checks on the file before reading.
* @param con context
* @param paths colon separated file name(s) to read
* @return 0 on success, POPT_ERROR_BADCONFIG on failure
*/
int poptReadConfigFiles(poptContext con, const char * paths);
/** \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
*/
int poptReadDefaultConfig(poptContext con, int useEnv);
/** \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, const char **argv,
int * argcPtr,
const char *** 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,
int * argcPtr, const char *** 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
*/
int poptConfigFileToString(FILE *fp, char ** argstrp, int flags);
/** \ingroup popt
* Return formatted error string for popt failure.
* @param error popt error
* @return error string
*/
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?
*/
void poptSetExecPath(poptContext con, const char * path, int allowAbsolute);
/** \ingroup popt
* Print detailed description of options.
* @param con context
* @param fp ouput file handle
* @param flags (unused)
*/
void poptPrintHelp(poptContext con, FILE * fp, int flags);
/** \ingroup popt
* Print terse description of options.
* @param con context
* @param fp ouput file handle
* @param flags (unused)
*/
void poptPrintUsage(poptContext con, FILE * fp, int flags);
/** \ingroup popt
* Provide text to replace default "[OPTION...]" in help/usage output.
* @param con context
* @param text replacement text
*/
void poptSetOtherOptionHelp(poptContext con, const char * text);
/** \ingroup popt
* Return argv[0] from context.
* @param con context
* @return argv[0]
*/
const char * poptGetInvocationName(poptContext con)
/*@*/;
/** \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
*/
int poptStrippedArgv(poptContext con, int argc, char ** argv);
/**
* Add a string to an argv array.
* @retval *argvp argv array
* @param argInfo (unused)
* @param val string arg to add (using strdup)
* @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
*/
int poptSaveString(const char *** argvp, unsigned int argInfo,
const char * val);
/**
* Save a long 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 aLongLong value to use
* @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
*/
int poptSaveLongLong(long long * arg, unsigned int argInfo,
long long aLongLong);
/**
* 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
*/
int poptSaveLong(long * arg, unsigned int argInfo, long aLong);
/**
* Save a short integer, performing logical operation with value.
* @warning Alignment check may be too strict on certain platorms.
* @param arg short pointer, aligned on short boundary.
* @param argInfo logical operation (see POPT_ARGFLAG_*)
* @param aLong value to use
* @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
*/
int poptSaveShort(short * arg, unsigned int argInfo, long aLong);
/**
* 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
*/
int poptSaveInt(int * arg, unsigned int argInfo, long aLong);
/* The bit set typedef. */
typedef struct poptBits_s {
unsigned int bits[1];
} * poptBits;
#define _POPT_BITS_N 1024U /* estimated population */
#define _POPT_BITS_M ((3U * _POPT_BITS_N) / 2U)
#define _POPT_BITS_K 16U /* no. of linear hash combinations */
extern unsigned int _poptBitsN;
extern unsigned int _poptBitsM;
extern unsigned int _poptBitsK;
int poptBitsAdd(poptBits bits, const char * s);
int poptBitsChk(poptBits bits, const char * s);
int poptBitsClr(poptBits bits);
int poptBitsDel(poptBits bits, const char * s);
int poptBitsIntersect(poptBits * ap, const poptBits b);
int poptBitsUnion(poptBits * ap, const poptBits b);
int poptBitsArgs(poptContext con, poptBits * ap);
/**
* Save a string into a bit set (experimental).
* @retval *bits bit set (lazily malloc'd if NULL)
* @param argInfo logical operation (see POPT_ARGFLAG_*)
* @param s string to add to bit set
* @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
*/
int poptSaveBits(poptBits * bitsp, unsigned int argInfo,
const char * s);
#ifdef __cplusplus
}
#endif
#endif
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