1 file changed, 0 insertions, 420 deletions
diff --git a/ui-ssdiff.c b/ui-ssdiff.c
deleted file mode 100644
index af8bc9e..0000000
--- a/ui-ssdiff.c
+++ /dev/null
@@ -1,420 +0,0 @@
-#include "cgit.h"
-#include "ui-ssdiff.h"
-#include "html.h"
-#include "ui-shared.h"
-#include "ui-diff.h"
-
-extern int use_ssdiff;
-
-static int current_old_line, current_new_line;
-static int **L = NULL;
-
-struct deferred_lines {
-	int line_no;
-	char *line;
-	struct deferred_lines *next;
-};
-
-static struct deferred_lines *deferred_old, *deferred_old_last;
-static struct deferred_lines *deferred_new, *deferred_new_last;
-
-static void create_or_reset_lcs_table(void)
-{
-	int i;
-
-	if (L != NULL) {
-		memset(*L, 0, sizeof(int) * MAX_SSDIFF_SIZE);
-		return;
-	}
-
-	// xcalloc will die if we ran out of memory;
-	// not very helpful for debugging
-	L = (int**)xcalloc(MAX_SSDIFF_M, sizeof(int *));
-	*L = (int*)xcalloc(MAX_SSDIFF_SIZE, sizeof(int));
-
-	for (i = 1; i < MAX_SSDIFF_M; i++) {
-		L[i] = *L + i * MAX_SSDIFF_N;
-	}
-}
-
-static char *longest_common_subsequence(char *A, char *B)
-{
-	int i, j, ri;
-	int m = strlen(A);
-	int n = strlen(B);
-	int tmp1, tmp2;
-	int lcs_length;
-	char *result;
-
-	// We bail if the lines are too long
-	if (m >= MAX_SSDIFF_M || n >= MAX_SSDIFF_N)
-		return NULL;
-
-	create_or_reset_lcs_table();
-
-	for (i = m; i >= 0; i--) {
-		for (j = n; j >= 0; j--) {
-			if (A[i] == '\0' || B[j] == '\0') {
-				L[i][j] = 0;
-			} else if (A[i] == B[j]) {
-				L[i][j] = 1 + L[i + 1][j + 1];
-			} else {
-				tmp1 = L[i + 1][j];
-				tmp2 = L[i][j + 1];
-				L[i][j] = (tmp1 > tmp2 ? tmp1 : tmp2);
-			}
-		}
-	}
-
-	lcs_length = L[0][0];
-	result = xmalloc(lcs_length + 2);
-	memset(result, 0, sizeof(*result) * (lcs_length + 2));
-
-	ri = 0;
-	i = 0;
-	j = 0;
-	while (i < m && j < n) {
-		if (A[i] == B[j]) {
-			result[ri] = A[i];
-			ri += 1;
-			i += 1;
-			j += 1;
-		} else if (L[i + 1][j] >= L[i][j + 1]) {
-			i += 1;
-		} else {
-			j += 1;
-		}
-	}
-
-	return result;
-}
-
-static int line_from_hunk(char *line, char type)
-{
-	char *buf1, *buf2;
-	int len, res;
-
-	buf1 = strchr(line, type);
-	if (buf1 == NULL)
-		return 0;
-	buf1 += 1;
-	buf2 = strchr(buf1, ',');
-	if (buf2 == NULL)
-		return 0;
-	len = buf2 - buf1;
-	buf2 = xmalloc(len + 1);
-	strlcpy(buf2, buf1, len + 1);
-	res = atoi(buf2);
-	free(buf2);
-	return res;
-}
-
-static char *replace_tabs(char *line)
-{
-	char *prev_buf = line;
-	char *cur_buf;
-	size_t linelen = strlen(line);
-	int n_tabs = 0;
-	int i;
-	char *result;
-	size_t result_len;
-
-	if (linelen == 0) {
-		result = xmalloc(1);
-		result[0] = '\0';
-		return result;
-	}
-
-	for (i = 0; i < linelen; i++) {
-		if (line[i] == '\t')
-			n_tabs += 1;
-	}
-	result_len = linelen + n_tabs * 8;
-	result = xmalloc(result_len + 1);
-	result[0] = '\0';
-
-	for (;;) {
-		cur_buf = strchr(prev_buf, '\t');
-		if (!cur_buf) {
-			linelen = strlen(result);
-			strlcpy(&result[linelen], prev_buf, result_len - linelen + 1);
-			break;
-		} else {
-			linelen = strlen(result);
-			strlcpy(&result[linelen], prev_buf, cur_buf - prev_buf + 1);
-			linelen = strlen(result);
-			memset(&result[linelen], ' ', 8 - (linelen % 8));
-			result[linelen + 8 - (linelen % 8)] = '\0';
-		}
-		prev_buf = cur_buf + 1;
-	}
-	return result;
-}
-
-static int calc_deferred_lines(struct deferred_lines *start)
-{
-	struct deferred_lines *item = start;
-	int result = 0;
-	while (item) {
-		result += 1;
-		item = item->next;
-	}
-	return result;
-}
-
-static void deferred_old_add(char *line, int line_no)
-{
-	struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines));
-	item->line = xstrdup(line);
-	item->line_no = line_no;
-	item->next = NULL;
-	if (deferred_old) {
-		deferred_old_last->next = item;
-		deferred_old_last = item;
-	} else {
-		deferred_old = deferred_old_last = item;
-	}
-}
-
-static void deferred_new_add(char *line, int line_no)
-{
-	struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines));
-	item->line = xstrdup(line);
-	item->line_no = line_no;
-	item->next = NULL;
-	if (deferred_new) {
-		deferred_new_last->next = item;
-		deferred_new_last = item;
-	} else {
-		deferred_new = deferred_new_last = item;
-	}
-}
-
-static void print_part_with_lcs(char *class, char *line, char *lcs)
-{
-	int line_len = strlen(line);
-	int i, j;
-	char c[2] = " ";
-	int same = 1;
-
-	j = 0;
-	for (i = 0; i < line_len; i++) {
-		c[0] = line[i];
-		if (same) {
-			if (line[i] == lcs[j])
-				j += 1;
-			else {
-				same = 0;
-				htmlf("<span class='%s'>", class);
-			}
-		} else if (line[i] == lcs[j]) {
-			same = 1;
-			html("</span>");
-			j += 1;
-		}
-		html_txt(c);
-	}
-	if (!same)
-		html("</span>");
-}
-
-static void print_ssdiff_line(char *class,
-			      int old_line_no,
-			      char *old_line,
-			      int new_line_no,
-			      char *new_line, int individual_chars)
-{
-	char *lcs = NULL;
-
-	if (old_line)
-		old_line = replace_tabs(old_line + 1);
-	if (new_line)
-		new_line = replace_tabs(new_line + 1);
-	if (individual_chars && old_line && new_line)
-		lcs = longest_common_subsequence(old_line, new_line);
-	html("<tr>\n");
-	if (old_line_no > 0) {
-		struct diff_filespec *old_file = cgit_get_current_old_file();
-		char *lineno_str = fmt("n%d", old_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_oid(&old_file->oid)?"HEAD":oid_to_hex(old_rev_oid), lineno_str);
-		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str);
-		html("<td class='lineno'><a href='");
-		html(fileurl);
-		htmlf("'>%s</a>", lineno_str + 1);
-		html("</td>");
-		htmlf("<td class='%s'>", class);
-		free(fileurl);
-	} else if (old_line)
-		htmlf("<td class='lineno'></td><td class='%s'>", class);
-	else
-		htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
-	if (old_line) {
-		if (lcs)
-			print_part_with_lcs("del", old_line, lcs);
-		else
-			html_txt(old_line);
-	}
-
-	html("</td>\n");
-	if (new_line_no > 0) {
-		struct diff_filespec *new_file = cgit_get_current_new_file();
-		char *lineno_str = fmt("n%d", new_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_oid(&new_file->oid)?"HEAD":oid_to_hex(new_rev_oid), lineno_str);
-		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str);
-		html("<td class='lineno'><a href='");
-		html(fileurl);
-		htmlf("'>%s</a>", lineno_str + 1);
-		html("</td>");
-		htmlf("<td class='%s'>", class);
-		free(fileurl);
-	} else if (new_line)
-		htmlf("<td class='lineno'></td><td class='%s'>", class);
-	else
-		htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
-	if (new_line) {
-		if (lcs)
-			print_part_with_lcs("add", new_line, lcs);
-		else
-			html_txt(new_line);
-	}
-
-	html("</td></tr>");
-	if (lcs)
-		free(lcs);
-	if (new_line)
-		free(new_line);
-	if (old_line)
-		free(old_line);
-}
-
-static void print_deferred_old_lines(void)
-{
-	struct deferred_lines *iter_old, *tmp;
-	iter_old = deferred_old;
-	while (iter_old) {
-		print_ssdiff_line("del", iter_old->line_no,
-				  iter_old->line, -1, NULL, 0);
-		tmp = iter_old->next;
-		free(iter_old);
-		iter_old = tmp;
-	}
-}
-
-static void print_deferred_new_lines(void)
-{
-	struct deferred_lines *iter_new, *tmp;
-	iter_new = deferred_new;
-	while (iter_new) {
-		print_ssdiff_line("add", -1, NULL,
-				  iter_new->line_no, iter_new->line, 0);
-		tmp = iter_new->next;
-		free(iter_new);
-		iter_new = tmp;
-	}
-}
-
-static void print_deferred_changed_lines(void)
-{
-	struct deferred_lines *iter_old, *iter_new, *tmp;
-	int n_old_lines = calc_deferred_lines(deferred_old);
-	int n_new_lines = calc_deferred_lines(deferred_new);
-	int individual_chars = (n_old_lines == n_new_lines ? 1 : 0);
-
-	iter_old = deferred_old;
-	iter_new = deferred_new;
-	while (iter_old || iter_new) {
-		if (iter_old && iter_new)
-			print_ssdiff_line("changed", iter_old->line_no,
-					  iter_old->line,
-					  iter_new->line_no, iter_new->line,
-					  individual_chars);
-		else if (iter_old)
-			print_ssdiff_line("changed", iter_old->line_no,
-					  iter_old->line, -1, NULL, 0);
-		else if (iter_new)
-			print_ssdiff_line("changed", -1, NULL,
-					  iter_new->line_no, iter_new->line, 0);
-		if (iter_old) {
-			tmp = iter_old->next;
-			free(iter_old);
-			iter_old = tmp;
-		}
-
-		if (iter_new) {
-			tmp = iter_new->next;
-			free(iter_new);
-			iter_new = tmp;
-		}
-	}
-}
-
-void cgit_ssdiff_print_deferred_lines(void)
-{
-	if (!deferred_old && !deferred_new)
-		return;
-	if (deferred_old && !deferred_new)
-		print_deferred_old_lines();
-	else if (!deferred_old && deferred_new)
-		print_deferred_new_lines();
-	else
-		print_deferred_changed_lines();
-	deferred_old = deferred_old_last = NULL;
-	deferred_new = deferred_new_last = NULL;
-}
-
-/*
- * print a single line returned from xdiff
- */
-void cgit_ssdiff_line_cb(char *line, int len)
-{
-	char c = line[len - 1];
-	line[len - 1] = '\0';
-	if (line[0] == '@') {
-		current_old_line = line_from_hunk(line, '-');
-		current_new_line = line_from_hunk(line, '+');
-	}
-
-	if (line[0] == ' ') {
-		if (deferred_old || deferred_new)
-			cgit_ssdiff_print_deferred_lines();
-		print_ssdiff_line("ctx", current_old_line, line,
-				  current_new_line, line, 0);
-		current_old_line += 1;
-		current_new_line += 1;
-	} else if (line[0] == '+') {
-		deferred_new_add(line, current_new_line);
-		current_new_line += 1;
-	} else if (line[0] == '-') {
-		deferred_old_add(line, current_old_line);
-		current_old_line += 1;
-	} else if (line[0] == '@') {
-		html("<tr><td colspan='4' class='hunk'>");
-		html_txt(line);
-		html("</td></tr>");
-	} else {
-		html("<tr><td colspan='4' class='ctx'>");
-		html_txt(line);
-		html("</td></tr>");
-	}
-	line[len - 1] = c;
-}
-
-void cgit_ssdiff_header_begin(void)
-{
-	current_old_line = -1;
-	current_new_line = -1;
-	html("<tr><td class='space' colspan='4'><div></div></td></tr>");
-	html("<tr><td class='head' colspan='4'>");
-}
-
-void cgit_ssdiff_header_end(void)
-{
-	html("</td></tr>");
-}
-
-void cgit_ssdiff_footer(void)
-{
-	if (deferred_old || deferred_new)
-		cgit_ssdiff_print_deferred_lines();
-	html("<tr><td class='foot' colspan='4'></td></tr>");
-}