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Make the load_game and save_game macros more reliable

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These macros now follow recommended practices as used by the Linux
kernel: in particular, by using the "do { ... } while (0)" construct.
This commit is contained in:
John Zaitseff 2011-07-15 18:56:33 +10:00
parent 5c28cea858
commit 04513c9d30
1 changed files with 9 additions and 9 deletions
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18
src/game.c
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@ -50,7 +50,7 @@ static const int game_file_crypt_key[] = {
// Macros used in load_game()
#define load_game_scanf(_fmt, _var, _cond) \
{ \
do { \
if (fgets(buf, BUFSIZE, file) == NULL) { \
err_exit("%s: missing field on line %d", filename, lineno); \
} \
@ -64,7 +64,7 @@ static const int game_file_crypt_key[] = {
filename, lineno, buf); \
} \
lineno++; \
}
} while (0)
#define load_game_read_int(_var, _cond) \
load_game_scanf("%d", _var, _cond)
@ -74,15 +74,15 @@ static const int game_file_crypt_key[] = {
load_game_scanf("%lf", _var, _cond)
#define load_game_read_bool(_var) \
{ \
do { \
int b; \
\
load_game_scanf("%d", b, (b == false) || (b == true)); \
(_var) = b; \
}
} while (0)
#define load_game_read_string(_var) \
{ \
do { \
char *s; \
int len; \
\
@ -101,22 +101,22 @@ static const int game_file_crypt_key[] = {
\
strcpy(s, buf); \
len = strlen(s); \
if ((len > 0) && (s[len - 1] == '\n')) { \
if (len > 0 && s[len - 1] == '\n') { \
s[len - 1] = '\0'; \
} \
\
(_var) = s; \
}
} while (0)
// Macros used in save_game()
#define save_game_printf(_fmt, _var) \
{ \
do { \
snprintf(buf, BUFSIZE, _fmt "\n", _var); \
scramble(crypt_key, buf, BUFSIZE); \
fprintf(file, "%s", buf); \
}
} while (0)
#define save_game_write_int(_var) \
save_game_printf("%d", _var)