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-rw-r--r--third_party/git/base85.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/third_party/git/base85.c b/third_party/git/base85.c
deleted file mode 100644
index 5ca601ee14fd..000000000000
--- a/third_party/git/base85.c
+++ /dev/null
@@ -1,132 +0,0 @@
-#include "cache.h"
-
-#undef DEBUG_85
-
-#ifdef DEBUG_85
-#define say(a) fprintf(stderr, a)
-#define say1(a,b) fprintf(stderr, a, b)
-#define say2(a,b,c) fprintf(stderr, a, b, c)
-#else
-#define say(a) do { /* nothing */ } while (0)
-#define say1(a,b) do { /* nothing */ } while (0)
-#define say2(a,b,c) do { /* nothing */ } while (0)
-#endif
-
-static const char en85[] = {
-	'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
-	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
-	'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
-	'U', 'V', 'W', 'X', 'Y', 'Z',
-	'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
-	'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
-	'u', 'v', 'w', 'x', 'y', 'z',
-	'!', '#', '$', '%', '&', '(', ')', '*', '+', '-',
-	';', '<', '=', '>', '?', '@', '^', '_',	'`', '{',
-	'|', '}', '~'
-};
-
-static char de85[256];
-static void prep_base85(void)
-{
-	int i;
-	if (de85['Z'])
-		return;
-	for (i = 0; i < ARRAY_SIZE(en85); i++) {
-		int ch = en85[i];
-		de85[ch] = i + 1;
-	}
-}
-
-int decode_85(char *dst, const char *buffer, int len)
-{
-	prep_base85();
-
-	say2("decode 85 <%.*s>", len / 4 * 5, buffer);
-	while (len) {
-		unsigned acc = 0;
-		int de, cnt = 4;
-		unsigned char ch;
-		do {
-			ch = *buffer++;
-			de = de85[ch];
-			if (--de < 0)
-				return error("invalid base85 alphabet %c", ch);
-			acc = acc * 85 + de;
-		} while (--cnt);
-		ch = *buffer++;
-		de = de85[ch];
-		if (--de < 0)
-			return error("invalid base85 alphabet %c", ch);
-		/* Detect overflow. */
-		if (0xffffffff / 85 < acc ||
-		    0xffffffff - de < (acc *= 85))
-			return error("invalid base85 sequence %.5s", buffer-5);
-		acc += de;
-		say1(" %08x", acc);
-
-		cnt = (len < 4) ? len : 4;
-		len -= cnt;
-		do {
-			acc = (acc << 8) | (acc >> 24);
-			*dst++ = acc;
-		} while (--cnt);
-	}
-	say("\n");
-
-	return 0;
-}
-
-void encode_85(char *buf, const unsigned char *data, int bytes)
-{
-	say("encode 85");
-	while (bytes) {
-		unsigned acc = 0;
-		int cnt;
-		for (cnt = 24; cnt >= 0; cnt -= 8) {
-			unsigned ch = *data++;
-			acc |= ch << cnt;
-			if (--bytes == 0)
-				break;
-		}
-		say1(" %08x", acc);
-		for (cnt = 4; cnt >= 0; cnt--) {
-			int val = acc % 85;
-			acc /= 85;
-			buf[cnt] = en85[val];
-		}
-		buf += 5;
-	}
-	say("\n");
-
-	*buf = 0;
-}
-
-#ifdef DEBUG_85
-int main(int ac, char **av)
-{
-	char buf[1024];
-
-	if (!strcmp(av[1], "-e")) {
-		int len = strlen(av[2]);
-		encode_85(buf, av[2], len);
-		if (len <= 26) len = len + 'A' - 1;
-		else len = len + 'a' - 26 - 1;
-		printf("encoded: %c%s\n", len, buf);
-		return 0;
-	}
-	if (!strcmp(av[1], "-d")) {
-		int len = *av[2];
-		if ('A' <= len && len <= 'Z') len = len - 'A' + 1;
-		else len = len - 'a' + 26 + 1;
-		decode_85(buf, av[2]+1, len);
-		printf("decoded: %.*s\n", len, buf);
-		return 0;
-	}
-	if (!strcmp(av[1], "-t")) {
-		char t[4] = { -1,-1,-1,-1 };
-		encode_85(buf, t, 4);
-		printf("encoded: D%s\n", buf);
-		return 0;
-	}
-}
-#endif