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