1 files changed, 0 insertions, 434 deletions
diff --git a/third_party/git/xdiff/xutils.c b/third_party/git/xdiff/xutils.c
deleted file mode 100644
index cfa6e2220ffd..000000000000
--- a/third_party/git/xdiff/xutils.c
+++ /dev/null
@@ -1,434 +0,0 @@
-/*
- *  LibXDiff by Davide Libenzi ( File Differential Library )
- *  Copyright (C) 2003	Davide Libenzi
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, see
- *  <http://www.gnu.org/licenses/>.
- *
- *  Davide Libenzi <davidel@xmailserver.org>
- *
- */
-
-#include "xinclude.h"
-
-
-long xdl_bogosqrt(long n) {
-	long i;
-
-	/*
-	 * Classical integer square root approximation using shifts.
-	 */
-	for (i = 1; n > 0; n >>= 2)
-		i <<= 1;
-
-	return i;
-}
-
-
-int xdl_emit_diffrec(char const *rec, long size, char const *pre, long psize,
-		     xdemitcb_t *ecb) {
-	int i = 2;
-	mmbuffer_t mb[3];
-
-	mb[0].ptr = (char *) pre;
-	mb[0].size = psize;
-	mb[1].ptr = (char *) rec;
-	mb[1].size = size;
-	if (size > 0 && rec[size - 1] != '\n') {
-		mb[2].ptr = (char *) "\n\\ No newline at end of file\n";
-		mb[2].size = strlen(mb[2].ptr);
-		i++;
-	}
-	if (ecb->out_line(ecb->priv, mb, i) < 0) {
-
-		return -1;
-	}
-
-	return 0;
-}
-
-void *xdl_mmfile_first(mmfile_t *mmf, long *size)
-{
-	*size = mmf->size;
-	return mmf->ptr;
-}
-
-
-long xdl_mmfile_size(mmfile_t *mmf)
-{
-	return mmf->size;
-}
-
-
-int xdl_cha_init(chastore_t *cha, long isize, long icount) {
-
-	cha->head = cha->tail = NULL;
-	cha->isize = isize;
-	cha->nsize = icount * isize;
-	cha->ancur = cha->sncur = NULL;
-	cha->scurr = 0;
-
-	return 0;
-}
-
-
-void xdl_cha_free(chastore_t *cha) {
-	chanode_t *cur, *tmp;
-
-	for (cur = cha->head; (tmp = cur) != NULL;) {
-		cur = cur->next;
-		xdl_free(tmp);
-	}
-}
-
-
-void *xdl_cha_alloc(chastore_t *cha) {
-	chanode_t *ancur;
-	void *data;
-
-	if (!(ancur = cha->ancur) || ancur->icurr == cha->nsize) {
-		if (!(ancur = (chanode_t *) xdl_malloc(sizeof(chanode_t) + cha->nsize))) {
-
-			return NULL;
-		}
-		ancur->icurr = 0;
-		ancur->next = NULL;
-		if (cha->tail)
-			cha->tail->next = ancur;
-		if (!cha->head)
-			cha->head = ancur;
-		cha->tail = ancur;
-		cha->ancur = ancur;
-	}
-
-	data = (char *) ancur + sizeof(chanode_t) + ancur->icurr;
-	ancur->icurr += cha->isize;
-
-	return data;
-}
-
-long xdl_guess_lines(mmfile_t *mf, long sample) {
-	long nl = 0, size, tsize = 0;
-	char const *data, *cur, *top;
-
-	if ((cur = data = xdl_mmfile_first(mf, &size)) != NULL) {
-		for (top = data + size; nl < sample && cur < top; ) {
-			nl++;
-			if (!(cur = memchr(cur, '\n', top - cur)))
-				cur = top;
-			else
-				cur++;
-		}
-		tsize += (long) (cur - data);
-	}
-
-	if (nl && tsize)
-		nl = xdl_mmfile_size(mf) / (tsize / nl);
-
-	return nl + 1;
-}
-
-int xdl_blankline(const char *line, long size, long flags)
-{
-	long i;
-
-	if (!(flags & XDF_WHITESPACE_FLAGS))
-		return (size <= 1);
-
-	for (i = 0; i < size && XDL_ISSPACE(line[i]); i++)
-		;
-
-	return (i == size);
-}
-
-/*
- * Have we eaten everything on the line, except for an optional
- * CR at the very end?
- */
-static int ends_with_optional_cr(const char *l, long s, long i)
-{
-	int complete = s && l[s-1] == '\n';
-
-	if (complete)
-		s--;
-	if (s == i)
-		return 1;
-	/* do not ignore CR at the end of an incomplete line */
-	if (complete && s == i + 1 && l[i] == '\r')
-		return 1;
-	return 0;
-}
-
-int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags)
-{
-	int i1, i2;
-
-	if (s1 == s2 && !memcmp(l1, l2, s1))
-		return 1;
-	if (!(flags & XDF_WHITESPACE_FLAGS))
-		return 0;
-
-	i1 = 0;
-	i2 = 0;
-
-	/*
-	 * -w matches everything that matches with -b, and -b in turn
-	 * matches everything that matches with --ignore-space-at-eol,
-	 * which in turn matches everything that matches with --ignore-cr-at-eol.
-	 *
-	 * Each flavor of ignoring needs different logic to skip whitespaces
-	 * while we have both sides to compare.
-	 */
-	if (flags & XDF_IGNORE_WHITESPACE) {
-		goto skip_ws;
-		while (i1 < s1 && i2 < s2) {
-			if (l1[i1++] != l2[i2++])
-				return 0;
-		skip_ws:
-			while (i1 < s1 && XDL_ISSPACE(l1[i1]))
-				i1++;
-			while (i2 < s2 && XDL_ISSPACE(l2[i2]))
-				i2++;
-		}
-	} else if (flags & XDF_IGNORE_WHITESPACE_CHANGE) {
-		while (i1 < s1 && i2 < s2) {
-			if (XDL_ISSPACE(l1[i1]) && XDL_ISSPACE(l2[i2])) {
-				/* Skip matching spaces and try again */
-				while (i1 < s1 && XDL_ISSPACE(l1[i1]))
-					i1++;
-				while (i2 < s2 && XDL_ISSPACE(l2[i2]))
-					i2++;
-				continue;
-			}
-			if (l1[i1++] != l2[i2++])
-				return 0;
-		}
-	} else if (flags & XDF_IGNORE_WHITESPACE_AT_EOL) {
-		while (i1 < s1 && i2 < s2 && l1[i1] == l2[i2]) {
-			i1++;
-			i2++;
-		}
-	} else if (flags & XDF_IGNORE_CR_AT_EOL) {
-		/* Find the first difference and see how the line ends */
-		while (i1 < s1 && i2 < s2 && l1[i1] == l2[i2]) {
-			i1++;
-			i2++;
-		}
-		return (ends_with_optional_cr(l1, s1, i1) &&
-			ends_with_optional_cr(l2, s2, i2));
-	}
-
-	/*
-	 * After running out of one side, the remaining side must have
-	 * nothing but whitespace for the lines to match.  Note that
-	 * ignore-whitespace-at-eol case may break out of the loop
-	 * while there still are characters remaining on both lines.
-	 */
-	if (i1 < s1) {
-		while (i1 < s1 && XDL_ISSPACE(l1[i1]))
-			i1++;
-		if (s1 != i1)
-			return 0;
-	}
-	if (i2 < s2) {
-		while (i2 < s2 && XDL_ISSPACE(l2[i2]))
-			i2++;
-		return (s2 == i2);
-	}
-	return 1;
-}
-
-static unsigned long xdl_hash_record_with_whitespace(char const **data,
-		char const *top, long flags) {
-	unsigned long ha = 5381;
-	char const *ptr = *data;
-	int cr_at_eol_only = (flags & XDF_WHITESPACE_FLAGS) == XDF_IGNORE_CR_AT_EOL;
-
-	for (; ptr < top && *ptr != '\n'; ptr++) {
-		if (cr_at_eol_only) {
-			/* do not ignore CR at the end of an incomplete line */
-			if (*ptr == '\r' &&
-			    (ptr + 1 < top && ptr[1] == '\n'))
-				continue;
-		}
-		else if (XDL_ISSPACE(*ptr)) {
-			const char *ptr2 = ptr;
-			int at_eol;
-			while (ptr + 1 < top && XDL_ISSPACE(ptr[1])
-					&& ptr[1] != '\n')
-				ptr++;
-			at_eol = (top <= ptr + 1 || ptr[1] == '\n');
-			if (flags & XDF_IGNORE_WHITESPACE)
-				; /* already handled */
-			else if (flags & XDF_IGNORE_WHITESPACE_CHANGE
-				 && !at_eol) {
-				ha += (ha << 5);
-				ha ^= (unsigned long) ' ';
-			}
-			else if (flags & XDF_IGNORE_WHITESPACE_AT_EOL
-				 && !at_eol) {
-				while (ptr2 != ptr + 1) {
-					ha += (ha << 5);
-					ha ^= (unsigned long) *ptr2;
-					ptr2++;
-				}
-			}
-			continue;
-		}
-		ha += (ha << 5);
-		ha ^= (unsigned long) *ptr;
-	}
-	*data = ptr < top ? ptr + 1: ptr;
-
-	return ha;
-}
-
-unsigned long xdl_hash_record(char const **data, char const *top, long flags) {
-	unsigned long ha = 5381;
-	char const *ptr = *data;
-
-	if (flags & XDF_WHITESPACE_FLAGS)
-		return xdl_hash_record_with_whitespace(data, top, flags);
-
-	for (; ptr < top && *ptr != '\n'; ptr++) {
-		ha += (ha << 5);
-		ha ^= (unsigned long) *ptr;
-	}
-	*data = ptr < top ? ptr + 1: ptr;
-
-	return ha;
-}
-
-unsigned int xdl_hashbits(unsigned int size) {
-	unsigned int val = 1, bits = 0;
-
-	for (; val < size && bits < CHAR_BIT * sizeof(unsigned int); val <<= 1, bits++);
-	return bits ? bits: 1;
-}
-
-
-int xdl_num_out(char *out, long val) {
-	char *ptr, *str = out;
-	char buf[32];
-
-	ptr = buf + sizeof(buf) - 1;
-	*ptr = '\0';
-	if (val < 0) {
-		*--ptr = '-';
-		val = -val;
-	}
-	for (; val && ptr > buf; val /= 10)
-		*--ptr = "0123456789"[val % 10];
-	if (*ptr)
-		for (; *ptr; ptr++, str++)
-			*str = *ptr;
-	else
-		*str++ = '0';
-	*str = '\0';
-
-	return str - out;
-}
-
-static int xdl_format_hunk_hdr(long s1, long c1, long s2, long c2,
-			       const char *func, long funclen,
-			       xdemitcb_t *ecb) {
-	int nb = 0;
-	mmbuffer_t mb;
-	char buf[128];
-
-	memcpy(buf, "@@ -", 4);
-	nb += 4;
-
-	nb += xdl_num_out(buf + nb, c1 ? s1: s1 - 1);
-
-	if (c1 != 1) {
-		memcpy(buf + nb, ",", 1);
-		nb += 1;
-
-		nb += xdl_num_out(buf + nb, c1);
-	}
-
-	memcpy(buf + nb, " +", 2);
-	nb += 2;
-
-	nb += xdl_num_out(buf + nb, c2 ? s2: s2 - 1);
-
-	if (c2 != 1) {
-		memcpy(buf + nb, ",", 1);
-		nb += 1;
-
-		nb += xdl_num_out(buf + nb, c2);
-	}
-
-	memcpy(buf + nb, " @@", 3);
-	nb += 3;
-	if (func && funclen) {
-		buf[nb++] = ' ';
-		if (funclen > sizeof(buf) - nb - 1)
-			funclen = sizeof(buf) - nb - 1;
-		memcpy(buf + nb, func, funclen);
-		nb += funclen;
-	}
-	buf[nb++] = '\n';
-
-	mb.ptr = buf;
-	mb.size = nb;
-	if (ecb->out_line(ecb->priv, &mb, 1) < 0)
-		return -1;
-	return 0;
-}
-
-int xdl_emit_hunk_hdr(long s1, long c1, long s2, long c2,
-		      const char *func, long funclen,
-		      xdemitcb_t *ecb) {
-	if (!ecb->out_hunk)
-		return xdl_format_hunk_hdr(s1, c1, s2, c2, func, funclen, ecb);
-	if (ecb->out_hunk(ecb->priv,
-			  c1 ? s1 : s1 - 1, c1,
-			  c2 ? s2 : s2 - 1, c2,
-			  func, funclen) < 0)
-		return -1;
-	return 0;
-}
-
-int xdl_fall_back_diff(xdfenv_t *diff_env, xpparam_t const *xpp,
-		int line1, int count1, int line2, int count2)
-{
-	/*
-	 * This probably does not work outside Git, since
-	 * we have a very simple mmfile structure.
-	 *
-	 * Note: ideally, we would reuse the prepared environment, but
-	 * the libxdiff interface does not (yet) allow for diffing only
-	 * ranges of lines instead of the whole files.
-	 */
-	mmfile_t subfile1, subfile2;
-	xdfenv_t env;
-
-	subfile1.ptr = (char *)diff_env->xdf1.recs[line1 - 1]->ptr;
-	subfile1.size = diff_env->xdf1.recs[line1 + count1 - 2]->ptr +
-		diff_env->xdf1.recs[line1 + count1 - 2]->size - subfile1.ptr;
-	subfile2.ptr = (char *)diff_env->xdf2.recs[line2 - 1]->ptr;
-	subfile2.size = diff_env->xdf2.recs[line2 + count2 - 2]->ptr +
-		diff_env->xdf2.recs[line2 + count2 - 2]->size - subfile2.ptr;
-	if (xdl_do_diff(&subfile1, &subfile2, xpp, &env) < 0)
-		return -1;
-
-	memcpy(diff_env->xdf1.rchg + line1 - 1, env.xdf1.rchg, count1);
-	memcpy(diff_env->xdf2.rchg + line2 - 1, env.xdf2.rchg, count2);
-
-	xdl_free_env(&env);
-
-	return 0;
-}