5 /* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
6 file accompanying popt source distributions, available from
7 ftp://ftp.rpm.org/pub/rpm/dist. */
12 #include <stdio.h> /* for FILE * */
14 #define POPT_OPTION_DEPTH 10
17 * \name Arg type identifiers
20 #define POPT_ARG_NONE 0 /*!< no arg */
21 #define POPT_ARG_STRING 1 /*!< arg will be saved as string */
22 #define POPT_ARG_INT 2 /*!< arg will be converted to int */
23 #define POPT_ARG_LONG 3 /*!< arg will be converted to long */
24 #define POPT_ARG_INCLUDE_TABLE 4 /*!< arg points to table */
25 #define POPT_ARG_CALLBACK 5 /*!< table-wide callback... must be
26 set first in table; arg points
27 to callback, descrip points to
28 callback data to pass */
29 #define POPT_ARG_INTL_DOMAIN 6 /*!< set the translation domain
30 for this table and any
31 included tables; arg points
32 to the domain string */
33 #define POPT_ARG_VAL 7 /*!< arg should take value val */
34 #define POPT_ARG_FLOAT 8 /*!< arg will be converted to float */
35 #define POPT_ARG_DOUBLE 9 /*!< arg will be converted to double */
37 #define POPT_ARG_MASK 0x0000FFFF
44 #define POPT_ARGFLAG_ONEDASH 0x80000000 /*!< allow -longoption */
45 #define POPT_ARGFLAG_DOC_HIDDEN 0x40000000 /*!< don't show in help/usage */
46 #define POPT_ARGFLAG_STRIP 0x20000000 /*!< strip this arg from argv(only applies to long args) */
47 #define POPT_ARGFLAG_OPTIONAL 0x10000000 /*!< arg may be missing */
49 #define POPT_ARGFLAG_OR 0x08000000 /*!< arg will be or'ed */
50 #define POPT_ARGFLAG_NOR 0x09000000 /*!< arg will be nor'ed */
51 #define POPT_ARGFLAG_AND 0x04000000 /*!< arg will be and'ed */
52 #define POPT_ARGFLAG_NAND 0x05000000 /*!< arg will be nand'ed */
53 #define POPT_ARGFLAG_XOR 0x02000000 /*!< arg will be xor'ed */
54 #define POPT_ARGFLAG_NOT 0x01000000 /*!< arg will be negated */
55 #define POPT_ARGFLAG_LOGICALOPS \
56 (POPT_ARGFLAG_OR|POPT_ARGFLAG_AND|POPT_ARGFLAG_XOR)
58 #define POPT_BIT_SET (POPT_ARG_VAL|POPT_ARGFLAG_OR)
59 /*!< set arg bit(s) */
60 #define POPT_BIT_CLR (POPT_ARG_VAL|POPT_ARGFLAG_NAND)
61 /*!< clear arg bit(s) */
63 #define POPT_ARGFLAG_SHOW_DEFAULT 0x00800000 /*!< show default value in --help */
68 * \name Callback modifiers
71 #define POPT_CBFLAG_PRE 0x80000000 /*!< call the callback before parse */
72 #define POPT_CBFLAG_POST 0x40000000 /*!< call the callback after parse */
73 #define POPT_CBFLAG_INC_DATA 0x20000000 /*!< use data from the include line,
75 #define POPT_CBFLAG_SKIPOPTION 0x10000000 /*!< don't callback with option */
76 #define POPT_CBFLAG_CONTINUE 0x08000000 /*!< continue callbacks with option */
80 * \name Error return values
83 #define POPT_ERROR_NOARG -10 /*!< missing argument */
84 #define POPT_ERROR_BADOPT -11 /*!< unknown option */
85 #define POPT_ERROR_OPTSTOODEEP -13 /*!< aliases nested too deeply */
86 #define POPT_ERROR_BADQUOTE -15 /*!< error in paramter quoting */
87 #define POPT_ERROR_ERRNO -16 /*!< errno set, use strerror(errno) */
88 #define POPT_ERROR_BADNUMBER -17 /*!< invalid numeric value */
89 #define POPT_ERROR_OVERFLOW -18 /*!< number too large or too small */
90 #define POPT_ERROR_BADOPERATION -19 /*!< mutually exclusive logical operations requested */
91 #define POPT_ERROR_NULLARG -20 /*!< opt->arg should not be NULL */
92 #define POPT_ERROR_MALLOC -21 /*!< memory allocation failed */
96 * \name poptBadOption() flags
99 #define POPT_BADOPTION_NOALIAS (1 << 0) /*!< don't go into an alias */
103 * \name poptGetContext() flags
106 #define POPT_CONTEXT_NO_EXEC (1 << 0) /*!< ignore exec expansions */
107 #define POPT_CONTEXT_KEEP_FIRST (1 << 1) /*!< pay attention to argv[0] */
108 #define POPT_CONTEXT_POSIXMEHARDER (1 << 2) /*!< options can't follow args */
109 #define POPT_CONTEXT_ARG_OPTS (1 << 4) /*!< return args as options with value 0 */
115 /*@observer@*/ /*@null@*/ const char * longName; /*!< may be NULL */
116 char shortName; /*!< may be '\0' */
118 /*@shared@*/ /*@null@*/ void * arg; /*!< depends on argInfo */
119 int val; /*!< 0 means don't return, just update flag */
120 /*@observer@*/ /*@null@*/ const char * descrip; /*!< description for autohelp -- may be NULL */
121 /*@observer@*/ /*@null@*/ const char * argDescrip; /*!< argument description for autohelp */
125 * A popt alias argument for poptAddAlias().
128 /*@owned@*/ /*@null@*/ const char * longName; /*!< may be NULL */
129 char shortName; /*!< may be '\0' */
131 /*@owned@*/ const char ** argv; /*!< must be free()able */
135 * A popt alias or exec argument for poptAddItem().
138 typedef struct poptItem_s {
139 struct poptOption option; /*!< alias/exec name(s) and description. */
140 int argc; /*!< (alias) no. of args. */
141 /*@owned@*/ const char ** argv; /*!< (alias) args, must be free()able. */
146 * \name Auto-generated help/usage
151 * Empty table marker to enable displaying popt alias/exec options.
154 /*@unchecked@*/ /*@observer@*/
155 extern struct poptOption poptAliasOptions[];
157 #define POPT_AUTOALIAS { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptAliasOptions, \
158 0, "Options implemented via popt alias/exec:", NULL },
161 * Auto help table options.
164 /*@unchecked@*/ /*@observer@*/
165 extern struct poptOption poptHelpOptions[];
167 #define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
168 0, "Help options:", NULL },
170 #define POPT_TABLEEND { NULL, '\0', 0, 0, 0, NULL, NULL }
176 typedef /*@abstract@*/ struct poptContext_s * poptContext;
182 /*@-exporttype -typeuse@*/
183 typedef struct poptOption * poptOption;
184 /*@=exporttype =typeuse@*/
188 enum poptCallbackReason {
189 POPT_CALLBACK_REASON_PRE = 0,
190 POPT_CALLBACK_REASON_POST = 1,
191 POPT_CALLBACK_REASON_OPTION = 2
201 * Table callback prototype.
203 * @param reason reason for callback
204 * @param opt option that triggered callback
205 * @param arg @todo Document.
206 * @param data @todo Document.
208 typedef void (*poptCallbackType) (poptContext con,
209 enum poptCallbackReason reason,
210 /*@null@*/ const struct poptOption * opt,
211 /*@null@*/ const char * arg,
212 /*@null@*/ const void * data)
216 * Initialize popt context.
218 * @param argc no. of arguments
219 * @param argv argument array
220 * @param options address of popt option table
221 * @param flags or'd POPT_CONTEXT_* bits
222 * @return initialized popt context
224 /*@only@*/ /*@null@*/ poptContext poptGetContext(
225 /*@dependent@*/ /*@keep@*/ const char * name,
226 int argc, /*@dependent@*/ /*@keep@*/ const char ** argv,
227 /*@dependent@*/ /*@keep@*/ const struct poptOption * options,
232 * Reinitialize popt context.
236 void poptResetContext(/*@null@*/poptContext con)
241 * Return value of next option found.
243 * @return next option val, -1 on last item, POPT_ERROR_* on error
245 int poptGetNextOpt(/*@null@*/poptContext con)
246 /*@globals fileSystem, internalState @*/
247 /*@modifies con, fileSystem, internalState @*/;
251 * Return next option argument (if any).
253 * @return option argument, NULL if no more options are available
255 /*@observer@*/ /*@null@*/ const char * poptGetOptArg(/*@null@*/poptContext con)
259 * Return current option's argument.
261 * @return option argument, NULL if no more options are available
263 /*@observer@*/ /*@null@*/ const char * poptGetArg(/*@null@*/poptContext con)
267 * Peek at current option's argument.
269 * @return option argument
271 /*@observer@*/ /*@null@*/ const char * poptPeekArg(/*@null@*/poptContext con)
275 * Return remaining arguments.
277 * @return argument array, terminated with NULL
279 /*@observer@*/ /*@null@*/ const char ** poptGetArgs(/*@null@*/poptContext con)
283 * Return the option which caused the most recent error.
286 * @return offending option
288 /*@observer@*/ const char * poptBadOption(/*@null@*/poptContext con, int flags)
295 * @return NULL always
297 /*@null@*/ poptContext poptFreeContext( /*@only@*/ /*@null@*/ poptContext con)
301 * Add arguments to context.
303 * @param argv argument array, NULL terminated
304 * @return 0 on success, POPT_ERROR_OPTSTOODEEP on failure
306 int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv)
310 * Add alias to context.
311 * @todo Pass alias by reference, not value.
312 * @deprecated Use poptAddItem instead.
314 * @param alias alias to add
315 * @param flags (unused)
316 * @return 0 on success
319 int poptAddAlias(poptContext con, struct poptAlias alias, int flags)
323 * Add alias/exec item to context.
325 * @param newItem alias/exec item to add
326 * @param flags 0 for alias, 1 for exec
327 * @return 0 on success
329 int poptAddItem(poptContext con, poptItem newItem, int flags)
333 * Read configuration file.
335 * @param fn file name to read
336 * @return 0 on success, POPT_ERROR_ERRNO on failure
338 int poptReadConfigFile(poptContext con, const char * fn)
339 /*@globals fileSystem, internalState @*/
340 /*@modifies con->execs, con->numExecs,
341 fileSystem, internalState @*/;
344 * Read default configuration from /etc/popt and $HOME/.popt.
346 * @param useEnv (unused)
347 * @return 0 on success, POPT_ERROR_ERRNO on failure
349 int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
350 /*@globals fileSystem, internalState @*/
351 /*@modifies con->execs, con->numExecs,
352 fileSystem, internalState @*/;
355 * Duplicate an argument array.
356 * @note: The argument array is malloc'd as a single area, so only argv must
359 * @param argc no. of arguments
360 * @param argv argument array
361 * @retval argcPtr address of returned no. of arguments
362 * @retval argvPtr address of returned argument array
363 * @return 0 on success, POPT_ERROR_NOARG on failure
365 int poptDupArgv(int argc, /*@null@*/ const char **argv,
366 /*@null@*/ /*@out@*/ int * argcPtr,
367 /*@null@*/ /*@out@*/ const char *** argvPtr)
368 /*@modifies *argcPtr, *argvPtr @*/;
371 * Parse a string into an argument array.
372 * The parse allows ', ", and \ quoting, but ' is treated the same as " and
373 * both may include \ quotes.
374 * @note: The argument array is malloc'd as a single area, so only argv must
377 * @param s string to parse
378 * @retval argcPtr address of returned no. of arguments
379 * @retval argvPtr address of returned argument array
381 int poptParseArgvString(const char * s,
382 /*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr)
383 /*@modifies *argcPtr, *argvPtr @*/;
386 * Parses an input configuration file and returns an string that is a
387 * command line. For use with popt. You must free the return value when done.
391 # this line is ignored
401 reall bad line = again
403 test = with lots of spaces
408 --aaa --bbb --ccc --bla="bla" --this_is="fdsafdas" --5555="55555" --test="with lots of spaces"
411 * Passing this to poptParseArgvString() yields an argv of:
419 '--test=with lots of spaces'
422 * @bug NULL is returned if file line is too long.
423 * @bug Silently ignores invalid lines.
425 * @param fp file handle to read
426 * @param *argstrp return string of options (malloc'd)
427 * @param flags unused
428 * @return 0 on success
429 * @see poptParseArgvString
432 int poptConfigFileToString(FILE *fp, /*@out@*/ char ** argstrp, int flags)
433 /*@globals fileSystem @*/
434 /*@modifies *fp, *argstrp, fileSystem @*/;
438 * Return formatted error string for popt failure.
439 * @param error popt error
440 * @return error string
443 /*@observer@*/ const char *const poptStrerror(const int error)
448 * Limit search for executables.
450 * @param path single path to search for executables
451 * @param allowAbsolute absolute paths only?
453 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
457 * Print detailed description of options.
459 * @param fp ouput file handle
460 * @param flags (unused)
462 void poptPrintHelp(poptContext con, FILE * fp, /*@unused@*/ int flags)
463 /*@globals fileSystem @*/
464 /*@modifies *fp, fileSystem @*/;
467 * Print terse description of options.
469 * @param fp ouput file handle
470 * @param flags (unused)
472 void poptPrintUsage(poptContext con, FILE * fp, /*@unused@*/ int flags)
473 /*@globals fileSystem @*/
474 /*@modifies *fp, fileSystem @*/;
477 * Provide text to replace default "[OPTION...]" in help/usage output.
479 * @param text replacement text
482 void poptSetOtherOptionHelp(poptContext con, const char * text)
487 * Return argv[0] from context.
491 /*@-redecl -fcnuse@*/
492 /*@observer@*/ const char * poptGetInvocationName(poptContext con)
494 /*@=redecl =fcnuse@*/
497 * Shuffle argv pointers to remove stripped args, returns new argc.
499 * @param argc no. of args
500 * @param argv arg vector
504 int poptStrippedArgv(poptContext con, int argc, char ** argv)
505 /*@modifies *argv @*/;
509 * Save a long, performing logical operation with value.
510 * @warning Alignment check may be too strict on certain platorms.
511 * @param arg integer pointer, aligned on int boundary.
512 * @param argInfo logical operation (see POPT_ARGFLAG_*)
513 * @param aLong value to use
514 * @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
517 int poptSaveLong(/*@null@*/ long * arg, int argInfo, long aLong)
519 /*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
523 * Save an integer, performing logical operation with value.
524 * @warning Alignment check may be too strict on certain platorms.
525 * @param arg integer pointer, aligned on int boundary.
526 * @param argInfo logical operation (see POPT_ARGFLAG_*)
527 * @param aLong value to use
528 * @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
531 int poptSaveInt(/*@null@*/ int * arg, int argInfo, long aLong)
533 /*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;