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Add token_to_packed() utility function.

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This commit is contained in:
Jason S. Ninneman 2017-06-19 14:45:32 -07:00
parent 9c88649cd4
commit ba64c57eb0
2 changed files with 13 additions and 0 deletions
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1
advent.h
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@ -90,6 +90,7 @@ extern bool oldstyle, editline, prompt;
extern void* xmalloc(size_t size); extern void* xmalloc(size_t size);
extern char* xstrdup(const char*); extern char* xstrdup(const char*);
extern void packed_to_token(long, char token[]); extern void packed_to_token(long, char token[]);
extern void token_to_packed(char token[], long);
extern void speak(const char*); extern void speak(const char*);
extern bool wordeq(token_t, token_t); extern bool wordeq(token_t, token_t);
extern bool wordempty(token_t); extern bool wordempty(token_t);

12
misc.c
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@ -50,6 +50,18 @@ void packed_to_token(long packed, char token[6])
} }
} }
void token_to_packed(char token[6], long* packed)
{
*packed = 0;
for (size_t i = 0; i < 5; ++i)
{
if (token[4 - i] == '\0')
continue;
char mapped = ascii_to_advent[token[4 - i]];
*packed |= (mapped << (6 * i));
}
}
/* Hide the fact that wods are corrently packed longs */ /* Hide the fact that wods are corrently packed longs */
bool wordeq(token_t a, token_t b) bool wordeq(token_t a, token_t b)