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qpkg/gobble.c (EXPECT): added variant that just skips over expected text

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If the package database is sane, then we don't need to check that all
the field names match what we expect. This saves a few more CPU cycles.
However, if anything goes wrong, the consequences may be unpleasant.
Thus, we default to the slow but safe approach.
This commit is contained in:
Werner Almesberger
2010-11-19 22:29:19 -03:00
parent 03c5e4ffe7
commit ed0281f306
1 changed files with 9 additions and 1 deletions
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10
qpkg/gobble.c
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@@ -15,16 +15,24 @@
#define CHARS_AFTER_ERROR 20 #define CHARS_AFTER_ERROR 20
#ifdef BREAKNECK_SPEED
#define EXPECT(s) do { buf += sizeof(s)-1; } while (0)
#else /* !BREAKNECK_SPEED */
#define EXPECT(s) \ #define EXPECT(s) \
do { \ do { \
if (end-buf < sizeof(s)-1) \ if (end-buf < sizeof(s)-1) \
FAIL; \ FAIL; \
if (memcmp(buf, s, sizeof(s)-1)) \ if (memcmp(buf, s, sizeof(s)-1)) \
FAIL; \ FAIL; \
buf += sizeof(s)-1; \ buf += sizeof(s)-1; \
} \ } \
while (0) while (0)
#endif
#define NEXT (buf == end ? '?' : *buf++) #define NEXT (buf == end ? '?' : *buf++)