Add URL parameter 'ignorews' for optionally ignoring whitespace in diffs

The new ctx.qry.ignorews variable is passed via cgit_diff_files() and
cgit_diff_tree() to Git's diff machinery. This is equivalent to passing
--ignore-all-space to 'git diff'.

Signed-off-by: Johan Herland <johan@herland.net>

1 files changed, 8 insertions, 3 deletions

diff --git a/shared.c b/shared.c
index 7cf1e59..d0973ab 100644
--- a/shared.c
+++ b/shared.c
@@ -265,3 +265,3 @@ int cgit_diff_files(const unsigned char *old_sha1,
                     unsigned long *new_size, int *binary, int context,
-                    linediff_fn fn)
+                    int ignorews, linediff_fn fn)
 {
@@ -288,2 +288,4 @@ int cgit_diff_files(const unsigned char *old_sha1,
         diff_params.flags = XDF_NEED_MINIMAL;
+        if (ignorews)
+                diff_params.flags |= XDF_IGNORE_WHITESPACE;
         emit_params.ctxlen = context > 0 ? context : 3;
@@ -298,3 +300,3 @@ void cgit_diff_tree(const unsigned char *old_sha1,
                     const unsigned char *new_sha1,
-                    filepair_fn fn, const char *prefix)
+                    filepair_fn fn, const char *prefix, int ignorews)
 {
@@ -309,2 +311,4 @@ void cgit_diff_tree(const unsigned char *old_sha1,
         DIFF_OPT_SET(&opt, RECURSIVE);
+        if (ignorews)
+                DIFF_XDL_SET(&opt, IGNORE_WHITESPACE);
         opt.format_callback = cgit_diff_tree_cb;
@@ -333,3 +337,4 @@ void cgit_diff_commit(struct commit *commit, filepair_fn fn)
                 old_sha1 = commit->parents->item->object.sha1;
-        cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
+        cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL,
+                       ctx.qry.ignorews);
 }