git.ozlabs.org Git - petitboot/blob - discover/grub2/grub2.h

   1 #ifndef GRUB2_H
   2 #define GRUB2_H
   3
   4 #include <regex.h>
   5 #include <stdbool.h>
   6 #include <list/list.h>
   7
   8 struct grub2_script;
   9
  10 struct grub2_word {
  11         const char              *text;
  12         bool                    expand;
  13         bool                    split;
  14         struct grub2_word       *next;
  15         struct list_item        argv_list;
  16 };
  17
  18 struct grub2_argv {
  19         struct list             words;
  20 };
  21
  22 struct grub2_statements {
  23         struct list             list;
  24 };
  25
  26 struct grub2_statement {
  27         struct list_item        list;
  28         enum {
  29                 STMT_TYPE_SIMPLE,
  30                 STMT_TYPE_MENUENTRY,
  31                 STMT_TYPE_IF,
  32                 STMT_TYPE_BLOCK,
  33         } type;
  34         int                     (*exec)(struct grub2_script *,
  35                                         struct grub2_statement *);
  36 };
  37
  38 struct grub2_statement_simple {
  39         struct grub2_statement  st;
  40         struct grub2_argv       *argv;
  41 };
  42
  43 struct grub2_statement_menuentry {
  44         struct grub2_statement  st;
  45         struct grub2_argv       *argv;
  46         struct grub2_statements *statements;
  47 };
  48
  49 struct grub2_statement_if {
  50         struct grub2_statement  st;
  51         struct grub2_statement  *condition;
  52         struct grub2_statements *true_case;
  53         struct grub2_statements *false_case;
  54 };
  55
  56 struct grub2_statement_block {
  57         struct grub2_statement  st;
  58         struct grub2_statements *statements;
  59 };
  60
  61 struct grub2_script {
  62         struct grub2_statements *statements;
  63         struct list             environment;
  64         regex_t                 var_re;
  65 };
  66
  67 struct grub2_parser {
  68         void                    *scanner;
  69         struct grub2_script     *script;
  70 };
  71
  72 struct grub2_statements *create_statements(struct grub2_parser *parser);
  73
  74 struct grub2_statement *create_statement_simple(struct grub2_parser *parser,
  75                 struct grub2_argv *argv);
  76
  77 struct grub2_statement *create_statement_menuentry(struct grub2_parser *parser,
  78                 struct grub2_argv *argv, struct grub2_statements *stmts);
  79
  80 struct grub2_statement *create_statement_if(struct grub2_parser *parser,
  81                 struct grub2_statement *condition,
  82                 struct grub2_statements *true_case,
  83                 struct grub2_statements *false_case);
  84
  85 struct grub2_statement *create_statement_block(struct grub2_parser *parser,
  86                 struct grub2_statements *stmts);
  87
  88 struct grub2_word *create_word(struct grub2_parser *parser, const char *text,
  89                 bool expand, bool split);
  90
  91 struct grub2_argv *create_argv(struct grub2_parser *parser);
  92
  93 void statement_append(struct grub2_statements *stmts,
  94                 struct grub2_statement *stmt);
  95
  96 void argv_append(struct grub2_argv *argv, struct grub2_word *word);
  97
  98 void word_append(struct grub2_word *w1, struct grub2_word *w2);
  99
 100 /* script interface */
 101 void script_execute(struct grub2_script *script);
 102
 103 int statement_simple_execute(struct grub2_script *script,
 104                 struct grub2_statement *statement);
 105 int statement_if_execute(struct grub2_script *script,
 106                 struct grub2_statement *statement);
 107
 108 struct grub2_script *create_script(void *ctx);
 109
 110 #endif /* GRUB2_H */
 111