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_alias,
  34         isl_arg_arg,
  35         isl_arg_bool,
  36         isl_arg_child,
  37         isl_arg_choice,
  38         isl_arg_flags,
  39         isl_arg_user,
  40         isl_arg_long,
  41         isl_arg_ulong,
  42         isl_arg_str,
  43         isl_arg_version
  44 };
  45
  46 struct isl_arg {
  47         enum isl_arg_type        type;
  48         char                     short_name;
  49         const char              *long_name;
  50         const char              *argument_name;
  51         size_t                   offset;
  52         const char              *help_msg;
  53         unsigned                 flags;
  54         union {
  55         struct {
  56                 struct isl_arg_choice   *choice;
  57                 unsigned                 default_value;
  58                 unsigned                 default_selected;
  59                 int (*set)(void *opt, unsigned val);
  60         } choice;
  61         struct {
  62                 struct isl_arg_flags    *flags;
  63                 unsigned                 default_value;
  64         } flags;
  65         struct {
  66                 unsigned                 default_value;
  67                 int (*set)(void *opt, unsigned val);
  68         } b;
  69         struct {
  70                 long                    default_value;
  71                 long                    default_selected;
  72                 int (*set)(void *opt, long val);
  73         } l;
  74         struct {
  75                 unsigned long           default_value;
  76         } ul;
  77         struct {
  78                 const char              *default_value;
  79         } str;
  80         struct {
  81                 struct isl_arg          *child;
  82                 size_t                   size;
  83         } child;
  84         struct {
  85                 void (*print_version)(void);
  86         } version;
  87         struct {
  88                 int (*init)(void*);
  89                 void (*clear)(void*);
  90         } user;
  91         } u;
  92 };
  93
  94 #define ISL_ARG_ALIAS(l)        {                                       \
  95         .type = isl_arg_alias,                                          \
  96         .long_name = l,                                                 \
  97 },
  98 #define ISL_ARG_ARG(st,f,a,d)   {                                       \
  99         .type = isl_arg_arg,                                            \
 100         .argument_name = a,                                             \
 101         .offset = offsetof(st, f),                                      \
 102         .u = { .str = { .default_value = d } }                          \
 103 },
 104 #define ISL_ARG_CHOICE(st,f,s,l,c,d,h)  {                               \
 105         .type = isl_arg_choice,                                         \
 106         .short_name = s,                                                \
 107         .long_name = l,                                                 \
 108         .offset = offsetof(st, f),                                      \
 109         .help_msg = h,                                                  \
 110         .u = { .choice = { .choice = c, .default_value = d,             \
 111                             .default_selected = d, .set = NULL } }      \
 112 },
 113 #define ISL_ARG_OPT_CHOICE(st,f,s,l,c,d,ds,h)   {                       \
 114         .type = isl_arg_choice,                                         \
 115         .short_name = s,                                                \
 116         .long_name = l,                                                 \
 117         .offset = offsetof(st, f),                                      \
 118         .help_msg = h,                                                  \
 119         .u = { .choice = { .choice = c, .default_value = d,             \
 120                             .default_selected = ds, .set = NULL } }     \
 121 },
 122 #define ISL_ARG_USER_OPT_CHOICE(st,f,s,l,c,setter,d,ds,h)       {       \
 123         .type = isl_arg_choice,                                         \
 124         .short_name = s,                                                \
 125         .long_name = l,                                                 \
 126         .offset = offsetof(st, f),                                      \
 127         .help_msg = h,                                                  \
 128         .u = { .choice = { .choice = c, .default_value = d,             \
 129                             .default_selected = ds, .set = setter } }   \
 130 },
 131 #define _ISL_ARG_BOOL_F(o,s,l,setter,d,h,fl)    {                       \
 132         .type = isl_arg_bool,                                           \
 133         .short_name = s,                                                \
 134         .long_name = l,                                                 \
 135         .offset = o,                                                    \
 136         .help_msg = h,                                                  \
 137         .flags = fl,                                                    \
 138         .u = { .b = { .default_value = d, .set = setter } }             \
 139 },
 140 #define ISL_ARG_BOOL_F(st,f,s,l,d,h,fl)                                 \
 141         _ISL_ARG_BOOL_F(offsetof(st, f),s,l,NULL,d,h,fl)
 142 #define ISL_ARG_BOOL(st,f,s,l,d,h)                                      \
 143         ISL_ARG_BOOL_F(st,f,s,l,d,h,0)
 144 #define ISL_ARG_PHANTOM_BOOL_F(s,l,setter,h,fl)                         \
 145         _ISL_ARG_BOOL_F(-1,s,l,setter,0,h,fl)
 146 #define ISL_ARG_PHANTOM_BOOL(s,l,setter,h)                              \
 147         ISL_ARG_PHANTOM_BOOL_F(s,l,setter,h,0)
 148 #define ISL_ARG_LONG(st,f,s,lo,d,h)     {                               \
 149         .type = isl_arg_long,                                           \
 150         .short_name = s,                                                \
 151         .long_name = lo,                                                \
 152         .offset = offsetof(st, f),                                      \
 153         .help_msg = h,                                                  \
 154         .u = { .l = { .default_value = d, .default_selected = d,        \
 155                       .set = NULL } }                                   \
 156 },
 157 #define ISL_ARG_USER_LONG(st,f,s,lo,setter,d,h) {                       \
 158         .type = isl_arg_long,                                           \
 159         .short_name = s,                                                \
 160         .long_name = lo,                                                \
 161         .offset = offsetof(st, f),                                      \
 162         .help_msg = h,                                                  \
 163         .u = { .l = { .default_value = d, .default_selected = d,        \
 164                       .set = setter } }                                 \
 165 },
 166 #define ISL_ARG_OPT_LONG(st,f,s,lo,d,ds,h)      {                       \
 167         .type = isl_arg_long,                                           \
 168         .short_name = s,                                                \
 169         .long_name = lo,                                                \
 170         .offset = offsetof(st, f),                                      \
 171         .help_msg = h,                                                  \
 172         .u = { .l = { .default_value = d, .default_selected = ds,       \
 173                       .set = NULL } }                                   \
 174 },
 175 #define ISL_ARG_ULONG(st,f,s,l,d,h)     {                               \
 176         .type = isl_arg_ulong,                                          \
 177         .short_name = s,                                                \
 178         .long_name = l,                                                 \
 179         .offset = offsetof(st, f),                                      \
 180         .help_msg = h,                                                  \
 181         .u = { .ul = { .default_value = d } }                           \
 182 },
 183 #define ISL_ARG_STR(st,f,s,l,a,d,h)     {                               \
 184         .type = isl_arg_str,                                            \
 185         .short_name = s,                                                \
 186         .long_name = l,                                                 \
 187         .argument_name = a,                                             \
 188         .offset = offsetof(st, f),                                      \
 189         .help_msg = h,                                                  \
 190         .u = { .str = { .default_value = d } }                          \
 191 },
 192 #define ISL_ARG_CHILD(st,f,l,c,h)       {                               \
 193         .type = isl_arg_child,                                          \
 194         .long_name = l,                                                 \
 195         .offset = offsetof(st, f),                                      \
 196         .help_msg = h,                                                  \
 197         .u = { .child = { .child = c, .size = sizeof(*((st *)NULL)->f) } }\
 198 },
 199 #define ISL_ARG_FLAGS(st,f,s,l,c,d,h)   {                               \
 200         .type = isl_arg_flags,                                          \
 201         .short_name = s,                                                \
 202         .long_name = l,                                                 \
 203         .offset = offsetof(st, f),                                      \
 204         .help_msg = h,                                                  \
 205         .u = { .flags = { .flags = c, .default_value = d } }            \
 206 },
 207 #define ISL_ARG_USER(st,f,i,c) {                                        \
 208         .type = isl_arg_user,                                           \
 209         .offset = offsetof(st, f),                                      \
 210         .u = { .user = { .init = i, .clear = c} }                       \
 211 },
 212 #define ISL_ARG_VERSION(print) {                                        \
 213         .type = isl_arg_version,                                        \
 214         .u = { .version = { .print_version = print } }                  \
 215 },
 216 #define ISL_ARG_END     { isl_arg_end }
 217
 218 #define ISL_ARG_ALL     (1 << 0)
 219
 220 void isl_arg_set_defaults(struct isl_arg *arg, void *opt);
 221 void isl_arg_free(struct isl_arg *arg, void *opt);
 222 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
 223         unsigned flags);
 224
 225 #define ISL_ARG_DECL(prefix,st,arg)                                     \
 226 extern struct isl_arg arg[];                                            \
 227 st *prefix ## _new_with_defaults();                                     \
 228 void prefix ## _free(st *opt);                                          \
 229 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags);
 230
 231 #define ISL_ARG_DEF(prefix,st,arg)                                      \
 232 st *prefix ## _new_with_defaults()                                      \
 233 {                                                                       \
 234         st *opt = (st *)calloc(1, sizeof(st));                          \
 235         if (opt)                                                        \
 236                 isl_arg_set_defaults(arg, opt);                         \
 237         return opt;                                                     \
 238 }                                                                       \
 239                                                                         \
 240 void prefix ## _free(st *opt)                                           \
 241 {                                                                       \
 242         isl_arg_free(arg, opt);                                         \
 243 }                                                                       \
 244                                                                         \
 245 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags)    \
 246 {                                                                       \
 247         return isl_arg_parse(arg, argc, argv, opt, flags);              \
 248 }
 249
 250 #if defined(__cplusplus)
 251 }
 252 #endif
 253
 254 #endif