cgit

diff --git a/cgit.c b/cgit.c
index d4fcfa70b18952e72bf4bde7b1050cc148db5188..ab25b6a00efe4889863b7625c22e9ea180d0fe61 100644
--- a/cgit.c
+++ b/cgit.c
@@ -258,6 +258,8 @@ 	} else if (!strcmp(name, "ss")) {
 		ctx.qry.ssdiff = atoi(value);
 	} else if (!strcmp(name, "all")) {
 		ctx.qry.show_all = atoi(value);
+	} else if (!strcmp(name, "context")) {
+		ctx.qry.context = atoi(value);
 	}
 }
 




diff --git a/cgit.h b/cgit.h
index 80c3902b5e5dec8e16b6b2bbaf60207ada344854..2b28d636e20ba1f79c398a83f9383d43cba9e2e0 100644
--- a/cgit.h
+++ b/cgit.h
@@ -147,6 +147,7 @@ 	char *sort;
 	int showmsg;
 	int ssdiff;
 	int show_all;
+	int context;
 	char *vpath;
 };
 
@@ -278,7 +279,7 @@
 extern int cgit_diff_files(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   unsigned long *old_size, unsigned long *new_size,
-			   int *binary, linediff_fn fn);
+			   int *binary, int context, linediff_fn fn);
 
 extern void cgit_diff_tree(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,




diff --git a/shared.c b/shared.c
index 58837dc76ec4830d9bf82c6b613c1f7d6899a7e4..06f70bb141587c25565664ef42cbdd9b1addec09 100644
--- a/shared.c
+++ b/shared.c
@@ -263,7 +263,8 @@ }
 
 int cgit_diff_files(const unsigned char *old_sha1,
 		    const unsigned char *new_sha1, unsigned long *old_size,
-		    unsigned long *new_size, int *binary, linediff_fn fn)
+		    unsigned long *new_size, int *binary, int context,
+		    linediff_fn fn)
 {
 	mmfile_t file1, file2;
 	xpparam_t diff_params;
@@ -290,7 +291,7 @@ 	memset(&diff_params, 0, sizeof(diff_params));
 	memset(&emit_params, 0, sizeof(emit_params));
 	memset(&emit_cb, 0, sizeof(emit_cb));
 	diff_params.flags = XDF_NEED_MINIMAL;
-	emit_params.ctxlen = 3;
+	emit_params.ctxlen = context > 0 ? context : 3;
 	emit_params.flags = XDL_EMIT_FUNCNAMES;
 	emit_cb.outf = filediff_cb;
 	emit_cb.priv = fn;




diff --git a/ui-diff.c b/ui-diff.c
index fb836df1342e3475558f5f3c8c9fbb84c99a95be..e0a72f757e79eb904e1fdf512fc876518f04d2df 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -127,7 +127,7 @@ 	files++;
 	lines_added = 0;
 	lines_removed = 0;
 	cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
-			&binary, count_diff_lines);
+			&binary, 0, count_diff_lines);
 	if (files >= slots) {
 		if (slots == 0)
 			slots = 4;
@@ -156,13 +156,21 @@
 void cgit_print_diffstat(const unsigned char *old_sha1,
 			 const unsigned char *new_sha1, const char *prefix)
 {
-	int i;
+	int i, save_context = ctx.qry.context;
 
 	html("<div class='diffstat-header'>");
 	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 		       ctx.qry.sha2, NULL, 0);
 	if (prefix)
 		htmlf(" (limited to '%s')", prefix);
+	html(" (");
+	ctx.qry.context = (save_context > 0 ? save_context : 3) << 1;
+	cgit_self_link("more", NULL, NULL, &ctx);
+	html("/");
+	ctx.qry.context = (save_context > 3 ? save_context : 3) >> 1;
+	cgit_self_link("less", NULL, NULL, &ctx);
+	ctx.qry.context = save_context;
+	html(" context)");
 	html("</div>");
 	html("<table summary='diffstat' class='diffstat'>");
 	max_changes = 0;
@@ -288,7 +296,7 @@ 			cgit_ssdiff_footer();
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-			    &new_size, &binary, print_line_fn))
+			    &new_size, &binary, ctx.qry.context, print_line_fn))
 		cgit_print_error("Error running diff");
 	if (binary) {
 		if (use_ssdiff)




diff --git a/ui-log.c b/ui-log.c
index bfbe436099953599f0ef77abd2c76094599fbf89..5eb5c813beedaebf7bb0921f20c892c0556f9628 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -33,7 +33,7 @@
 	files++;
 	if (ctx.repo->enable_log_linecount)
 		cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-				&new_size, &binary, count_lines);
+				&new_size, &binary, 0, count_lines);
 }
 
 void show_commit_decorations(struct commit *commit)




diff --git a/ui-patch.c b/ui-patch.c
index 25dc9fed9913fd396ff4ff6de6979b50bd28a000..d13104cf5fa05b30dc15f0377f7943fa6d3faec5 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -71,7 +71,7 @@ 			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-			    &new_size, &binary, print_line))
+			    &new_size, &binary, 0, print_line))
 		html("Error running diff");
 	if (binary)
 		html("Binary files differ\n");




diff --git a/ui-shared.c b/ui-shared.c
index e9917993fb2d4181bf3adb6ff4c01dea0cb52f26..c99bcecdf7905fa373d8839d83e3935d9c30faeb 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -341,6 +341,13 @@ 	}
 	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 		html(delim);
 		html("ss=1");
+		delim = "&amp;";
+	}
+	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
+		html(delim);
+		html("context=");
+		htmlf("%d", ctx.qry.context);
+		delim = "&amp;";
 	}
 	html("'>");
 	html_txt(name);
@@ -382,6 +389,13 @@ 	}
 	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 		html(delim);
 		html("ss=1");
+		delim = "&amp;";
+	}
+	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
+		html(delim);
+		html("context=");
+		htmlf("%d", ctx.qry.context);
+		delim = "&amp;";
 	}
 	html("'>");
 	html_txt(name);