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