util.h

   1 #ifndef _UTIL_H
   2 #define _UTIL_H
   3
   4 #include <stdio.h>
   5
   6 struct string_table
   7 {
   8         unsigned int cnt;
   9         unsigned int max;
  10         const char *str[0];
  11 };
  12
  13 char *getline_wrapped(FILE *file, unsigned int *linenum);
  14
  15 void filename2modname(char *modname, const char *filename);
  16 char *underscores(char *string);
  17 char *my_basename(const char *path);
  18
  19 struct string_table *strtbl_add(const char *str, struct string_table *tbl);
  20
  21 const char *next_string(const char *string, unsigned long *secsize);
  22
  23 /*
  24  * Change endianness of x if conv is true.
  25  */
  26 #define END(x, conv)                                                    \
  27 ({                                                                      \
  28         typeof(x) __x;                                                  \
  29         if (conv) __swap_bytes(&(x), &(__x), sizeof(__x));              \
  30         else __x = (x);                                                 \
  31         __x;                                                            \
  32 })
  33
  34 static inline void __swap_bytes(const void *src, void *dest, unsigned int size)
  35 {
  36         unsigned int i;
  37         for (i = 0; i < size; i++)
  38                 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
  39 }
  40
  41 int native_endianness(void);
  42
  43 #define streq(a,b) (strcmp((a),(b)) == 0)
  44 #define strstarts(a,start) (strncmp((a),(start), strlen(start)) == 0)
  45
  46 #endif