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59 lines
1.2 KiB
59 lines
1.2 KiB
#include "cache.h" |
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#include "sha1-array.h" |
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#include "sha1-lookup.h" |
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void sha1_array_append(struct sha1_array *array, const unsigned char *sha1) |
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{ |
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ALLOC_GROW(array->sha1, array->nr + 1, array->alloc); |
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hashcpy(array->sha1[array->nr++], sha1); |
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array->sorted = 0; |
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} |
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static int void_hashcmp(const void *a, const void *b) |
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{ |
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return hashcmp(a, b); |
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} |
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static void sha1_array_sort(struct sha1_array *array) |
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{ |
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qsort(array->sha1, array->nr, sizeof(*array->sha1), void_hashcmp); |
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array->sorted = 1; |
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} |
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static const unsigned char *sha1_access(size_t index, void *table) |
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{ |
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unsigned char (*array)[20] = table; |
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return array[index]; |
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} |
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int sha1_array_lookup(struct sha1_array *array, const unsigned char *sha1) |
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{ |
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if (!array->sorted) |
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sha1_array_sort(array); |
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return sha1_pos(sha1, array->sha1, array->nr, sha1_access); |
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} |
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void sha1_array_clear(struct sha1_array *array) |
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{ |
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free(array->sha1); |
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array->sha1 = NULL; |
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array->nr = 0; |
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array->alloc = 0; |
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array->sorted = 0; |
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} |
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void sha1_array_for_each_unique(struct sha1_array *array, |
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for_each_sha1_fn fn, |
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void *data) |
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{ |
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int i; |
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if (!array->sorted) |
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sha1_array_sort(array); |
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for (i = 0; i < array->nr; i++) { |
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if (i > 0 && !hashcmp(array->sha1[i], array->sha1[i-1])) |
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continue; |
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fn(array->sha1[i], data); |
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} |
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}
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