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59 lines
1.1 KiB
59 lines
1.1 KiB
#include "test-tool.h" |
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#include "cache.h" |
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int cmd_hash_impl(int ac, const char **av, int algo) |
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{ |
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git_hash_ctx ctx; |
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unsigned char hash[GIT_MAX_HEXSZ]; |
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unsigned bufsz = 8192; |
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int binary = 0; |
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char *buffer; |
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const struct git_hash_algo *algop = &hash_algos[algo]; |
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if (ac == 2) { |
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if (!strcmp(av[1], "-b")) |
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binary = 1; |
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else |
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bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024; |
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} |
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if (!bufsz) |
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bufsz = 8192; |
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while ((buffer = malloc(bufsz)) == NULL) { |
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fprintf(stderr, "bufsz %u is too big, halving...\n", bufsz); |
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bufsz /= 2; |
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if (bufsz < 1024) |
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die("OOPS"); |
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} |
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algop->init_fn(&ctx); |
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while (1) { |
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ssize_t sz, this_sz; |
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char *cp = buffer; |
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unsigned room = bufsz; |
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this_sz = 0; |
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while (room) { |
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sz = xread(0, cp, room); |
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if (sz == 0) |
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break; |
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if (sz < 0) |
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die_errno("test-hash"); |
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this_sz += sz; |
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cp += sz; |
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room -= sz; |
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} |
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if (this_sz == 0) |
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break; |
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algop->update_fn(&ctx, buffer, this_sz); |
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} |
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algop->final_fn(hash, &ctx); |
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if (binary) |
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fwrite(hash, 1, algop->rawsz, stdout); |
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else |
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puts(hash_to_hex_algop(hash, algop)); |
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free(buffer); |
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return 0; |
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}
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