include/isl/arg.h

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the MIT 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_footer,
  40         isl_arg_int,
  41         isl_arg_user,
  42         isl_arg_long,
  43         isl_arg_ulong,
  44         isl_arg_str,
  45         isl_arg_str_list,
  46         isl_arg_version
  47 };
  48
  49 struct isl_args;
  50
  51 struct isl_arg {
  52         enum isl_arg_type        type;
  53         char                     short_name;
  54         const char              *long_name;
  55         const char              *argument_name;
  56         size_t                   offset;
  57         const char              *help_msg;
  58 #define ISL_ARG_SINGLE_DASH     (1 << 0)
  59 #define ISL_ARG_BOOL_ARG        (1 << 1)
  60 #define ISL_ARG_HIDDEN          (1 << 2)
  61         unsigned                 flags;
  62         union {
  63         struct {
  64                 struct isl_arg_choice   *choice;
  65                 unsigned                 default_value;
  66                 unsigned                 default_selected;
  67                 int (*set)(void *opt, unsigned val);
  68         } choice;
  69         struct {
  70                 struct isl_arg_flags    *flags;
  71                 unsigned                 default_value;
  72         } flags;
  73         struct {
  74                 unsigned                 default_value;
  75                 int (*set)(void *opt, unsigned val);
  76         } b;
  77         struct {
  78                 int                     default_value;
  79         } i;
  80         struct {
  81                 long                    default_value;
  82                 long                    default_selected;
  83                 int (*set)(void *opt, long val);
  84         } l;
  85         struct {
  86                 unsigned long           default_value;
  87         } ul;
  88         struct {
  89                 const char              *default_value;
  90         } str;
  91         struct {
  92                 size_t                   offset_n;
  93         } str_list;
  94         struct {
  95                 struct isl_args         *child;
  96         } child;
  97         struct {
  98                 void (*print_version)(void);
  99         } version;
 100         struct {
 101                 int (*init)(void*);
 102                 void (*clear)(void*);
 103         } user;
 104         } u;
 105 };
 106
 107 struct isl_args {
 108         size_t                   options_size;
 109         struct isl_arg          *args;
 110 };
 111
 112 #define ISL_ARGS_START(s,name)                                          \
 113         struct isl_arg name ## LIST[];                                  \
 114         struct isl_args name = { sizeof(s), name ## LIST };             \
 115         struct isl_arg name ## LIST[] = {
 116 #define ISL_ARGS_END                                                    \
 117         { isl_arg_end } };
 118
 119 #define ISL_ARG_ALIAS(l)        {                                       \
 120         .type = isl_arg_alias,                                          \
 121         .long_name = l,                                                 \
 122 },
 123 #define ISL_ARG_ARG(st,f,a,d)   {                                       \
 124         .type = isl_arg_arg,                                            \
 125         .argument_name = a,                                             \
 126         .offset = offsetof(st, f),                                      \
 127         .u = { .str = { .default_value = d } }                          \
 128 },
 129 #define ISL_ARG_FOOTER(h)       {                                       \
 130         .type = isl_arg_footer,                                         \
 131         .help_msg = h,                                                  \
 132 },
 133 #define ISL_ARG_CHOICE(st,f,s,l,c,d,h)  {                               \
 134         .type = isl_arg_choice,                                         \
 135         .short_name = s,                                                \
 136         .long_name = l,                                                 \
 137         .offset = offsetof(st, f),                                      \
 138         .help_msg = h,                                                  \
 139         .u = { .choice = { .choice = c, .default_value = d,             \
 140                             .default_selected = d, .set = NULL } }      \
 141 },
 142 #define ISL_ARG_OPT_CHOICE(st,f,s,l,c,d,ds,h)   {                       \
 143         .type = isl_arg_choice,                                         \
 144         .short_name = s,                                                \
 145         .long_name = l,                                                 \
 146         .offset = offsetof(st, f),                                      \
 147         .help_msg = h,                                                  \
 148         .u = { .choice = { .choice = c, .default_value = d,             \
 149                             .default_selected = ds, .set = NULL } }     \
 150 },
 151 #define ISL_ARG_PHANTOM_USER_CHOICE_F(s,l,c,setter,d,h,fl)      {       \
 152         .type = isl_arg_choice,                                         \
 153         .short_name = s,                                                \
 154         .long_name = l,                                                 \
 155         .offset = -1,                                                   \
 156         .help_msg = h,                                                  \
 157         .flags = fl,                                                    \
 158         .u = { .choice = { .choice = c, .default_value = d,             \
 159                             .default_selected = d, .set = setter } }    \
 160 },
 161 #define ISL_ARG_USER_OPT_CHOICE(st,f,s,l,c,setter,d,ds,h)       {       \
 162         .type = isl_arg_choice,                                         \
 163         .short_name = s,                                                \
 164         .long_name = l,                                                 \
 165         .offset = offsetof(st, f),                                      \
 166         .help_msg = h,                                                  \
 167         .u = { .choice = { .choice = c, .default_value = d,             \
 168                             .default_selected = ds, .set = setter } }   \
 169 },
 170 #define _ISL_ARG_BOOL_F(o,s,l,setter,d,h,fl)    {                       \
 171         .type = isl_arg_bool,                                           \
 172         .short_name = s,                                                \
 173         .long_name = l,                                                 \
 174         .offset = o,                                                    \
 175         .help_msg = h,                                                  \
 176         .flags = fl,                                                    \
 177         .u = { .b = { .default_value = d, .set = setter } }             \
 178 },
 179 #define ISL_ARG_BOOL_F(st,f,s,l,d,h,fl)                                 \
 180         _ISL_ARG_BOOL_F(offsetof(st, f),s,l,NULL,d,h,fl)
 181 #define ISL_ARG_BOOL(st,f,s,l,d,h)                                      \
 182         ISL_ARG_BOOL_F(st,f,s,l,d,h,0)
 183 #define ISL_ARG_PHANTOM_BOOL_F(s,l,setter,h,fl)                         \
 184         _ISL_ARG_BOOL_F(-1,s,l,setter,0,h,fl)
 185 #define ISL_ARG_PHANTOM_BOOL(s,l,setter,h)                              \
 186         ISL_ARG_PHANTOM_BOOL_F(s,l,setter,h,0)
 187 #define ISL_ARG_INT_F(st,f,s,l,a,d,h,fl)        {                       \
 188         .type = isl_arg_int,                                            \
 189         .short_name = s,                                                \
 190         .long_name = l,                                                 \
 191         .argument_name = a,                                             \
 192         .offset = offsetof(st, f),                                      \
 193         .help_msg = h,                                                  \
 194         .flags = fl,                                                    \
 195         .u = { .ul = { .default_value = d } }                           \
 196 },
 197 #define ISL_ARG_INT(st,f,s,l,a,d,h)                                     \
 198         ISL_ARG_INT_F(st,f,s,l,a,d,h,0)
 199 #define ISL_ARG_LONG(st,f,s,lo,d,h)     {                               \
 200         .type = isl_arg_long,                                           \
 201         .short_name = s,                                                \
 202         .long_name = lo,                                                \
 203         .offset = offsetof(st, f),                                      \
 204         .help_msg = h,                                                  \
 205         .u = { .l = { .default_value = d, .default_selected = d,        \
 206                       .set = NULL } }                                   \
 207 },
 208 #define ISL_ARG_USER_LONG(st,f,s,lo,setter,d,h) {                       \
 209         .type = isl_arg_long,                                           \
 210         .short_name = s,                                                \
 211         .long_name = lo,                                                \
 212         .offset = offsetof(st, f),                                      \
 213         .help_msg = h,                                                  \
 214         .u = { .l = { .default_value = d, .default_selected = d,        \
 215                       .set = setter } }                                 \
 216 },
 217 #define ISL_ARG_OPT_LONG(st,f,s,lo,d,ds,h)      {                       \
 218         .type = isl_arg_long,                                           \
 219         .short_name = s,                                                \
 220         .long_name = lo,                                                \
 221         .offset = offsetof(st, f),                                      \
 222         .help_msg = h,                                                  \
 223         .u = { .l = { .default_value = d, .default_selected = ds,       \
 224                       .set = NULL } }                                   \
 225 },
 226 #define ISL_ARG_ULONG(st,f,s,l,d,h)     {                               \
 227         .type = isl_arg_ulong,                                          \
 228         .short_name = s,                                                \
 229         .long_name = l,                                                 \
 230         .offset = offsetof(st, f),                                      \
 231         .help_msg = h,                                                  \
 232         .u = { .ul = { .default_value = d } }                           \
 233 },
 234 #define ISL_ARG_STR_F(st,f,s,l,a,d,h,fl)        {                       \
 235         .type = isl_arg_str,                                            \
 236         .short_name = s,                                                \
 237         .long_name = l,                                                 \
 238         .argument_name = a,                                             \
 239         .offset = offsetof(st, f),                                      \
 240         .help_msg = h,                                                  \
 241         .flags = fl,                                                    \
 242         .u = { .str = { .default_value = d } }                          \
 243 },
 244 #define ISL_ARG_STR(st,f,s,l,a,d,h)                                     \
 245         ISL_ARG_STR_F(st,f,s,l,a,d,h,0)
 246 #define ISL_ARG_STR_LIST(st,f_n,f_l,s,l,a,h)    {                       \
 247         .type = isl_arg_str_list,                                       \
 248         .short_name = s,                                                \
 249         .long_name = l,                                                 \
 250         .argument_name = a,                                             \
 251         .offset = offsetof(st, f_l),                                    \
 252         .help_msg = h,                                                  \
 253         .u = { .str_list = { .offset_n = offsetof(st, f_n) } }          \
 254 },
 255 #define _ISL_ARG_CHILD(o,l,c,h,fl)      {                               \
 256         .type = isl_arg_child,                                          \
 257         .long_name = l,                                                 \
 258         .offset = o,                                                    \
 259         .help_msg = h,                                                  \
 260         .flags = fl,                                                    \
 261         .u = { .child = { .child = c } }                                \
 262 },
 263 #define ISL_ARG_CHILD(st,f,l,c,h)                                       \
 264         _ISL_ARG_CHILD(offsetof(st, f),l,c,h,0)
 265 #define ISL_ARG_GROUP_F(l,c,h,fl)                                       \
 266         _ISL_ARG_CHILD(-1,l,c,h,fl)
 267 #define ISL_ARG_GROUP(l,c,h)                                            \
 268         ISL_ARG_GROUP_F(l,c,h,0)
 269 #define ISL_ARG_FLAGS(st,f,s,l,c,d,h)   {                               \
 270         .type = isl_arg_flags,                                          \
 271         .short_name = s,                                                \
 272         .long_name = l,                                                 \
 273         .offset = offsetof(st, f),                                      \
 274         .help_msg = h,                                                  \
 275         .u = { .flags = { .flags = c, .default_value = d } }            \
 276 },
 277 #define ISL_ARG_USER(st,f,i,c) {                                        \
 278         .type = isl_arg_user,                                           \
 279         .offset = offsetof(st, f),                                      \
 280         .u = { .user = { .init = i, .clear = c} }                       \
 281 },
 282 #define ISL_ARG_VERSION(print) {                                        \
 283         .type = isl_arg_version,                                        \
 284         .u = { .version = { .print_version = print } }                  \
 285 },
 286
 287 #define ISL_ARG_ALL             (1 << 0)
 288 #define ISL_ARG_SKIP_HELP       (1 << 1)
 289
 290 void isl_args_set_defaults(struct isl_args *args, void *opt);
 291 void isl_args_free(struct isl_args *args, void *opt);
 292 int isl_args_parse(struct isl_args *args, int argc, char **argv, void *opt,
 293         unsigned flags);
 294
 295 #define ISL_ARG_DECL(prefix,st,args)                                    \
 296 extern struct isl_args args;                                            \
 297 st *prefix ## _new_with_defaults(void);                                 \
 298 void prefix ## _free(st *opt);                                          \
 299 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags);
 300
 301 #define ISL_ARG_DEF(prefix,st,args)                                     \
 302 st *prefix ## _new_with_defaults()                                      \
 303 {                                                                       \
 304         st *opt = (st *)calloc(1, sizeof(st));                          \
 305         if (opt)                                                        \
 306                 isl_args_set_defaults(&(args), opt);                    \
 307         return opt;                                                     \
 308 }                                                                       \
 309                                                                         \
 310 void prefix ## _free(st *opt)                                           \
 311 {                                                                       \
 312         isl_args_free(&(args), opt);                                    \
 313 }                                                                       \
 314                                                                         \
 315 int prefix ## _parse(st *opt, int argc, char **argv, unsigned flags)    \
 316 {                                                                       \
 317         return isl_args_parse(&(args), argc, argv, opt, flags);         \
 318 }
 319
 320 #if defined(__cplusplus)
 321 }
 322 #endif
 323
 324 #endif