ctxopt.h

   1 /* ################################################################### */
   2 /* Copyright 2020, Pierre Gentile (p.gen.progs@gmail.com)              */
   3 /*                                                                     */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public */
   5 /* License, v. 2.0. If a copy of the MPL was not distributed with this */
   6 /* file, You can obtain one at https://mozilla.org/MPL/2.0/.           */
   7 /* ################################################################### */
   8
   9 #ifndef CTXOPT_H
  10 #define CTXOPT_H
  11
  12 typedef enum
  13 {
  14   parameters,
  15   constraints,
  16   actions,
  17   incompatibilities,
  18   requirements,
  19   error_functions,
  20   before,
  21   after,
  22   visible_in_help,
  23 } settings;
  24
  25 typedef enum
  26 {
  27   entering,
  28   exiting
  29 } direction;
  30
  31 typedef enum
  32 {
  33   CTXOPTNOERR = 0,
  34   CTXOPTMISPAR,
  35   CTXOPTREQPAR,
  36   CTXOPTMISARG,
  37   CTXOPTDUPOPT,
  38   CTXOPTUNKPAR,
  39   CTXOPTINCOPT,
  40   CTXOPTCTEOPT,
  41   CTXOPTCTLOPT,
  42   CTXOPTCTGOPT,
  43   CTXOPTCTEARG,
  44   CTXOPTCTLARG,
  45   CTXOPTCTGARG,
  46   CTXOPTUNXARG,
  47   CTXOPTERRSIZ
  48 } errors;
  49
  50 typedef enum
  51 {
  52   continue_after,
  53   exit_after
  54 } usage_behaviour;
  55
  56 typedef struct state_s
  57 {
  58   char * prog_name;          /* base name of the program name.        */
  59   char * ctx_name;           /* current context name.                 */
  60   char * ctx_par_name;       /* parameter which led to this context.  */
  61   char * opt_name;           /* current option name.                  */
  62   int    opts_count;         /* limit of the number of occurrences of *
  63                              |  the current option.                   */
  64   int    opt_args_count;     /* limit of the number of parameters of  *
  65                              |  the current option.                   */
  66   char * pre_opt_par_name;   /* parameter before the current one.     */
  67   char * cur_opt_par_name;   /* current parameter.                    */
  68   char * cur_opt_params;     /* All the option's parameters.          */
  69   char * req_opt_par_needed; /* Option's params in the missing        *
  70                              | required group of optrions.            */
  71   char * req_opt_par;        /* Option's params of the option which   *
  72                              | required one of the parameter in       *
  73                              | req_opt_par_needed to also be present  *
  74                              | in the current context.                */
  75 } state_t;
  76
  77 void
  78 ctxopt_init(char * prog_name, char * flags);
  79
  80 void
  81 ctxopt_analyze(int nb_words, char ** words, int * rem_count, char *** rem_args);
  82
  83 void
  84 ctxopt_evaluate(void);
  85
  86 void
  87 ctxopt_new_ctx(char * name, char * opts_specs);
  88
  89 void
  90 ctxopt_ctx_disp_usage(char * ctx_name, usage_behaviour action);
  91
  92 void
  93 ctxopt_disp_usage(usage_behaviour action);
  94
  95 void
  96 ctxopt_add_global_settings(settings s, ...);
  97
  98 void
  99 ctxopt_add_ctx_settings(settings s, ...);
 100
 101 void
 102 ctxopt_add_opt_settings(settings s, ...);
 103
 104 int
 105 ctxopt_format_constraint(int nb_args, char ** args, char * value, char * par);
 106
 107 int
 108 ctxopt_re_constraint(int nb_args, char ** args, char * value, char * par);
 109
 110 int
 111 ctxopt_range_constraint(int nb_args, char ** args, char * value, char * par);
 112
 113 void
 114 ctxopt_free_memory(void);
 115
 116 #endif