src/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_CBFLAG_PRE         0x80000000  /* call the callback before parse */
  34 #define POPT_CBFLAG_POST        0x40000000  /* call the callback after parse */
  35 #define POPT_CBFLAG_INC_DATA    0x20000000  /* use data from the include line,
  36                                                not the subtable */
  37
  38 #define POPT_ERROR_NOARG        -10
  39 #define POPT_ERROR_BADOPT       -11
  40 #define POPT_ERROR_OPTSTOODEEP  -13
  41 #define POPT_ERROR_BADQUOTE     -15     /* only from poptParseArgString() */
  42 #define POPT_ERROR_ERRNO        -16     /* only from poptParseArgString() */
  43 #define POPT_ERROR_BADNUMBER    -17
  44 #define POPT_ERROR_OVERFLOW     -18
  45
  46 /* poptBadOption() flags */
  47 #define POPT_BADOPTION_NOALIAS  (1 << 0)  /* don't go into an alias */
  48
  49 /* poptGetContext() flags */
  50 #define POPT_CONTEXT_NO_EXEC    (1 << 0)  /* ignore exec expansions */
  51 #define POPT_CONTEXT_KEEP_FIRST (1 << 1)  /* pay attention to argv[0] */
  52 #define POPT_CONTEXT_POSIXMEHARDER (1 << 2) /* options can't follow args */
  53
  54 struct poptOption {
  55     const char * longName;      /* may be NULL */
  56     char shortName;             /* may be '\0' */
  57     int argInfo;
  58     void * arg;                 /* depends on argInfo */
  59     int val;                    /* 0 means don't return, just update flag */
  60     char * descrip;             /* description for autohelp -- may be NULL */
  61     char * argDescrip;          /* argument description for autohelp */
  62 };
  63
  64 struct poptAlias {
  65     char * longName;            /* may be NULL */
  66     char shortName;             /* may be '\0' */
  67     int argc;
  68     char ** argv;               /* must be free()able */
  69 };
  70
  71 extern struct poptOption const poptHelpOptions[];
  72 #define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
  73                         0, "Help options", NULL },
  74
  75 typedef struct poptContext_s * poptContext;
  76 #ifndef __cplusplus
  77 typedef struct poptOption * poptOption;
  78 #endif
  79
  80 enum poptCallbackReason { POPT_CALLBACK_REASON_PRE,
  81                           POPT_CALLBACK_REASON_POST,
  82                           POPT_CALLBACK_REASON_OPTION };
  83 typedef void (*poptCallbackType)(poptContext con,
  84                                  enum poptCallbackReason reason,
  85                                  const struct poptOption * opt,
  86                                  const char * arg, void * data);
  87
  88 poptContext poptGetContext(char * name, int argc, char ** argv,
  89                            const struct poptOption * options, int flags);
  90 void poptResetContext(poptContext con);
  91
  92 /* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
  93 int poptGetNextOpt(poptContext con);
  94 /* returns NULL if no argument is available */
  95 char * poptGetOptArg(poptContext con);
  96 /* returns NULL if no more options are available */
  97 char * poptGetArg(poptContext con);
  98 char * poptPeekArg(poptContext con);
  99 char ** poptGetArgs(poptContext con);
 100 /* returns the option which caused the most recent error */
 101 char * poptBadOption(poptContext con, int flags);
 102 void poptFreeContext(poptContext con);
 103 int poptStuffArgs(poptContext con, char ** argv);
 104 int poptAddAlias(poptContext con, struct poptAlias alias, int flags);
 105 int poptReadConfigFile(poptContext con, char * fn);
 106 /* like above, but reads /etc/popt and $HOME/.popt along with environment
 107    vars */
 108 int poptReadDefaultConfig(poptContext con, int useEnv);
 109 /* argv should be freed -- this allows ', ", and \ quoting, but ' is treated
 110    the same as " and both may include \ quotes */
 111 int poptParseArgvString(const char * s, int * argcPtr, char *** argvPtr);
 112 const char * poptStrerror(const int error);
 113 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute);
 114 int poptPrintHelp(poptContext con, FILE * f, int flags);
 115 void poptPrintUsage(poptContext con, FILE * f, int flags);
 116 void poptSetOtherOptionHelp(poptContext con, const char * text);
 117 const char * poptGetInvocationName(poptContext con);
 118
 119 #ifdef  __cplusplus
 120 }
 121 #endif
 122
 123 #endif