source3/popt/popt.h

   1 /* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING
   2    file accompanying popt source distributions, available from
   3    ftp://ftp.redhat.com/pub/code/popt */
   4
   5 #ifndef H_POPT
   6 #define H_POPT
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 #include <stdio.h>                      /* for FILE * */
  13
  14 #define POPT_OPTION_DEPTH       10
  15
  16 #define POPT_ARG_NONE           0
  17 #define POPT_ARG_STRING         1
  18 #define POPT_ARG_INT            2
  19 #define POPT_ARG_LONG           3
  20 #define POPT_ARG_INCLUDE_TABLE  4       /* arg points to table */
  21 #define POPT_ARG_CALLBACK       5       /* table-wide callback... must be
  22                                            set first in table; arg points
  23                                            to callback, descrip points to
  24                                            callback data to pass */
  25 #define POPT_ARG_INTL_DOMAIN    6       /* set the translation domain
  26                                            for this table and any
  27                                            included tables; arg points
  28                                            to the domain string */
  29 #define POPT_ARG_VAL            7       /* arg should take value val */
  30 #define POPT_ARG_MASK           0x0000FFFF
  31 #define POPT_ARGFLAG_ONEDASH    0x80000000  /* allow -longoption */
  32 #define POPT_ARGFLAG_DOC_HIDDEN 0x40000000  /* don't show in help/usage */
  33 #define POPT_ARGFLAG_STRIP      0x20000000  /* strip this arg from argv (only applies to long args) */
  34 #define POPT_CBFLAG_PRE         0x80000000  /* call the callback before parse */
  35 #define POPT_CBFLAG_POST        0x40000000  /* call the callback after parse */
  36 #define POPT_CBFLAG_INC_DATA    0x20000000  /* use data from the include line,
  37                                                not the subtable */
  38
  39 #define POPT_ERROR_NOARG        -10
  40 #define POPT_ERROR_BADOPT       -11
  41 #define POPT_ERROR_OPTSTOODEEP  -13
  42 #define POPT_ERROR_BADQUOTE     -15     /* only from poptParseArgString() */
  43 #define POPT_ERROR_ERRNO        -16     /* only from poptParseArgString() */
  44 #define POPT_ERROR_BADNUMBER    -17
  45 #define POPT_ERROR_OVERFLOW     -18
  46
  47 /* poptBadOption() flags */
  48 #define POPT_BADOPTION_NOALIAS  (1 << 0)  /* don't go into an alias */
  49
  50 /* poptGetContext() flags */
  51 #define POPT_CONTEXT_NO_EXEC    (1 << 0)  /* ignore exec expansions */
  52 #define POPT_CONTEXT_KEEP_FIRST (1 << 1)  /* pay attention to argv[0] */
  53 #define POPT_CONTEXT_POSIXMEHARDER (1 << 2) /* options can't follow args */
  54
  55 struct poptOption {
  56     /*@observer@*/ /*@null@*/ const char * longName;    /* may be NULL */
  57     char shortName;             /* may be '\0' */
  58     int argInfo;
  59     /*@shared@*/ /*@null@*/ void * arg;         /* depends on argInfo */
  60     int val;                    /* 0 means don't return, just update flag */
  61     /*@shared@*/ /*@null@*/ const char * descrip;       /* description for autohelp -- may be NULL */
  62     /*@shared@*/ /*@null@*/ const char * argDescrip;    /* argument description for autohelp */
  63 };
  64
  65 struct poptAlias {
  66     /*@owned@*/ /*@null@*/ const char * longName;       /* may be NULL */
  67     char shortName;             /* may be '\0' */
  68     int argc;
  69     /*@owned@*/ const char ** argv;             /* must be free()able */
  70 };
  71
  72 extern struct poptOption poptHelpOptions[];
  73 #define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
  74                         0, "Help options", NULL },
  75
  76 typedef struct poptContext_s * poptContext;
  77 #ifndef __cplusplus
  78 typedef struct poptOption * poptOption;
  79 #endif
  80
  81 enum poptCallbackReason { POPT_CALLBACK_REASON_PRE,
  82                           POPT_CALLBACK_REASON_POST,
  83                           POPT_CALLBACK_REASON_OPTION };
  84 typedef void (*poptCallbackType)(poptContext con,
  85                                  enum poptCallbackReason reason,
  86                                  const struct poptOption * opt,
  87                                  const char * arg, const void * data);
  88
  89 /*@only@*/ poptContext poptGetContext(/*@keep@*/ const char * name,
  90                 int argc, /*@keep@*/ const char ** argv,
  91                 /*@keep@*/ const struct poptOption * options, int flags);
  92 void poptResetContext(poptContext con);
  93
  94 /* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
  95 int poptGetNextOpt(poptContext con);
  96 /* returns NULL if no argument is available */
  97 /*@observer@*/ /*@null@*/ const char * poptGetOptArg(poptContext con);
  98 /* returns NULL if no more options are available */
  99 /*@observer@*/ /*@null@*/ const char * poptGetArg(poptContext con);
 100 /*@observer@*/ /*@null@*/ const char * poptPeekArg(poptContext con);
 101 /*@observer@*/ /*@null@*/ const char ** poptGetArgs(poptContext con);
 102 /* returns the option which caused the most recent error */
 103 /*@observer@*/ const char * poptBadOption(poptContext con, int flags);
 104 void poptFreeContext( /*@only@*/ poptContext con);
 105 int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv);
 106 int poptAddAlias(poptContext con, struct poptAlias alias, int flags);
 107 int poptReadConfigFile(poptContext con, const char * fn);
 108 /* like above, but reads /etc/popt and $HOME/.popt along with environment
 109    vars */
 110 int poptReadDefaultConfig(poptContext con, int useEnv);
 111 /* argv should be freed -- this allows ', ", and \ quoting, but ' is treated
 112    the same as " and both may include \ quotes */
 113 int poptDupArgv(int argc, const char **argv,
 114                 /*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr);
 115 int poptParseArgvString(const char * s,
 116                 /*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr);
 117 /*@observer@*/ const char *poptStrerror(const int error);
 118 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute);
 119 void poptPrintHelp(poptContext con, FILE * f, int flags);
 120 void poptPrintUsage(poptContext con, FILE * f, int flags);
 121 void poptSetOtherOptionHelp(poptContext con, const char * text);
 122 /*@observer@*/ const char * poptGetInvocationName(poptContext con);
 123 /* shuffles argv pointers to remove stripped args, returns new argc */
 124 int poptStrippedArgv(poptContext con, int argc, char **argv);
 125
 126 #ifdef  __cplusplus
 127 }
 128 #endif
 129
 130 #endif