include/isl_arg.h

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the GNU LGPLv2.1 license
   5  *
   6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   8  */
   9
  10 #ifndef ISL_ARG_H
  11 #define ISL_ARG_H
  12
  13 #include <stddef.h>
  14 #include <stdlib.h>
  15
  16 #if defined(__cplusplus)
  17 extern "C" {
  18 #endif
  19
  20 struct isl_arg_choice {
  21         const char      *name;
  22         unsigned         value;
  23 };
  24
  25 struct isl_arg_flags {
  26         const char      *name;
  27         unsigned         mask;
  28         unsigned         value;
  29 };
  30
  31 enum isl_arg_type {
  32         isl_arg_end,
  33         isl_arg_arg,
  34         isl_arg_bool,
  35         isl_arg_child,
  36         isl_arg_choice,
  37         isl_arg_flags,
  38         isl_arg_user,
  39         isl_arg_long,
  40         isl_arg_ulong,
  41         isl_arg_str,
  42         isl_arg_version
  43 };
  44
  45 struct isl_arg {
  46         enum isl_arg_type        type;
  47         char                     short_name;
  48         const char              *long_name;
  49         const char              *argument_name;
  50         size_t                   offset;
  51         const char              *help_msg;
  52         union {
  53         struct {
  54                 struct isl_arg_choice   *choice;
  55                 unsigned                 default_value;
  56                 unsigned                 default_selected;
  57         } choice;
  58         struct {
  59                 struct isl_arg_flags    *flags;
  60                 unsigned                 default_value;
  61         } flags;
  62         struct {
  63                 unsigned                 default_value;
  64         } b;
  65         struct {
  66                 long                    default_value;
  67                 long                    default_selected;
  68                 int (*set)(void *opt, long val);
  69         } l;
  70         struct {
  71                 unsigned long           default_value;
  72         } ul;
  73         struct {
  74                 const char              *default_value;
  75         } str;
  76         struct {
  77                 struct isl_arg          *child;
  78                 size_t                   size;
  79         } child;
  80         struct {
  81                 void (*print_version)(void);
  82         } version;
  83         struct {
  84                 int (*init)(void*);
  85                 void (*clear)(void*);
  86         } user;
  87         } u;
  88 };
  89
  90 #define ISL_ARG_ARG(st,f,a,d)   {                                       \
  91         .type = isl_arg_arg,                                            \
  92         .argument_name = a,                                             \
  93         .offset = offsetof(st, f),                                      \
  94         .u = { .str = { .default_value = d } }                          \
  95 },
  96 #define ISL_ARG_CHOICE(st,f,s,l,c,d,h)  {                               \
  97         .type = isl_arg_choice,                                         \
  98         .short_name = s,                                                \
  99         .long_name = l,                                                 \
 100         .offset = offsetof(st, f),                                      \
 101         .help_msg = h,                                                  \
 102         .u = { .choice = { .choice = c, .default_value = d,             \
 103                                         .default_selected = d } }       \
 104 },
 105 #define ISL_ARG_OPT_CHOICE(st,f,s,l,c,d,ds,h)   {                       \
 106         .type = isl_arg_choice,                                         \
 107         .short_name = s,                                                \
 108         .long_name = l,                                                 \
 109         .offset = offsetof(st, f),                                      \
 110         .help_msg = h,                                                  \
 111         .u = { .choice = { .choice = c, .default_value = d,             \
 112                                         .default_selected = ds } }      \
 113 },
 114 #define ISL_ARG_BOOL(st,f,s,l,d,h)      {                               \
 115         .type = isl_arg_bool,                                           \
 116         .short_name = s,                                                \
 117         .long_name = l,                                                 \
 118         .offset = offsetof(st, f),                                      \
 119         .help_msg = h,                                                  \
 120         .u = { .b = { .default_value = d } }                            \
 121 },
 122 #define ISL_ARG_LONG(st,f,s,lo,d,h)     {                               \
 123         .type = isl_arg_long,                                           \
 124         .short_name = s,                                                \
 125         .long_name = lo,                                                \
 126         .offset = offsetof(st, f),                                      \
 127         .help_msg = h,                                                  \
 128         .u = { .l = { .default_value = d, .default_selected = d,        \
 129                       .set = NULL } }                                   \
 130 },
 131 #define ISL_ARG_USER_LONG(st,f,s,lo,setter,d,h) {                       \
 132         .type = isl_arg_long,                                           \
 133         .short_name = s,                                                \
 134         .long_name = lo,                                                \
 135         .offset = offsetof(st, f),                                      \
 136         .help_msg = h,                                                  \
 137         .u = { .l = { .default_value = d, .default_selected = d,        \
 138                       .set = setter } }                                 \
 139 },
 140 #define ISL_ARG_OPT_LONG(st,f,s,lo,d,ds,h)      {                       \
 141         .type = isl_arg_long,                                           \
 142         .short_name = s,                                                \
 143         .long_name = lo,                                                \
 144         .offset = offsetof(st, f),                                      \
 145         .help_msg = h,                                                  \
 146         .u = { .l = { .default_value = d, .default_selected = ds,       \
 147                       .set = NULL } }                                   \
 148 },
 149 #define ISL_ARG_ULONG(st,f,s,l,d,h)     {                               \
 150         .type = isl_arg_ulong,                                          \
 151         .short_name = s,                                                \
 152         .long_name = l,                                                 \
 153         .offset = offsetof(st, f),                                      \
 154         .help_msg = h,                                                  \
 155         .u = { .ul = { .default_value = d } }                           \
 156 },
 157 #define ISL_ARG_STR(st,f,s,l,a,d,h)     {                               \
 158         .type = isl_arg_str,                                            \
 159         .short_name = s,                                                \
 160         .long_name = l,                                                 \
 161         .argument_name = a,                                             \
 162         .offset = offsetof(st, f),                                      \
 163         .help_msg = h,                                                  \
 164         .u = { .str = { .default_value = d } }                          \
 165 },
 166 #define ISL_ARG_CHILD(st,f,l,c,h)       {                               \
 167         .type = isl_arg_child,                                          \
 168         .long_name = l,                                                 \
 169         .offset = offsetof(st, f),                                      \
 170         .help_msg = h,                                                  \
 171         .u = { .child = { .child = c, .size = sizeof(*((st *)NULL)->f) } }\
 172 },
 173 #define ISL_ARG_FLAGS(st,f,s,l,c,d,h)   {                               \
 174         .type = isl_arg_flags,                                          \
 175         .short_name = s,                                                \
 176         .long_name = l,                                                 \
 177         .offset = offsetof(st, f),                                      \
 178         .help_msg = h,                                                  \
 179         .u = { .flags = { .flags = c, .default_value = d } }            \
 180 },
 181 #define ISL_ARG_USER(st,f,i,c) {                                        \
 182         .type = isl_arg_user,                                           \
 183         .offset = offsetof(st, f),                                      \
 184         .u = { .user = { .init = i, .clear = c} }                       \
 185 },
 186 #define ISL_ARG_VERSION(print) {                                        \
 187         .type = isl_arg_version,                                        \
 188         .u = { .version = { .print_version = print } }                  \
 189 },
 190 #define ISL_ARG_END     { isl_arg_end }
 191
 192 #define ISL_ARG_ALL     (1 << 0)
 193
 194 void isl_arg_set_defaults(struct isl_arg *arg, void *opt);
 195 void isl_arg_free(struct isl_arg *arg, void *opt);
 196 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
 197         unsigned flags);
 198
 199 #define ISL_ARG_DECL(prefix,st,arg)                                     \
 200 extern struct isl_arg arg[];                                            \
 201 st *prefix ## _new_with_defaults();                                     \
 202 void prefix ## _free(st *opt);                                          \
 203 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags);
 204
 205 #define ISL_ARG_DEF(prefix,st,arg)                                      \
 206 st *prefix ## _new_with_defaults()                                      \
 207 {                                                                       \
 208         st *opt = (st *)calloc(1, sizeof(st));                          \
 209         if (opt)                                                        \
 210                 isl_arg_set_defaults(arg, opt);                         \
 211         return opt;                                                     \
 212 }                                                                       \
 213                                                                         \
 214 void prefix ## _free(st *opt)                                           \
 215 {                                                                       \
 216         isl_arg_free(arg, opt);                                         \
 217 }                                                                       \
 218                                                                         \
 219 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags)    \
 220 {                                                                       \
 221         return isl_arg_parse(arg, argc, argv, opt, flags);              \
 222 }
 223
 224 #if defined(__cplusplus)
 225 }
 226 #endif
 227
 228 #endif