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-rw-r--r--shared.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/shared.c b/shared.c
index c7cd8a5..f20fb5c 100644
--- a/shared.c
+++ b/shared.c
@@ -331,48 +331,48 @@ int cgit_diff_files(const unsigned char *old_sha1,
mmfile_t file1, file2;
xpparam_t diff_params;
xdemitconf_t emit_params;
xdemitcb_t emit_cb;
if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
return 1;
diff_params.flags = XDF_NEED_MINIMAL;
emit_params.ctxlen = 3;
emit_params.flags = XDL_EMIT_FUNCNAMES;
emit_cb.outf = filediff_cb;
emit_cb.priv = fn;
xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
return 0;
}
void cgit_diff_tree(const unsigned char *old_sha1,
const unsigned char *new_sha1,
filepair_fn fn)
{
struct diff_options opt;
int ret;
diff_setup(&opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.detect_rename = 1;
opt.recursive = 1;
opt.format_callback = cgit_diff_tree_cb;
opt.format_callback_data = fn;
diff_setup_done(&opt);
- if (old_sha1)
+ if (old_sha1 && !is_null_sha1(old_sha1))
ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
else
ret = diff_root_tree_sha1(new_sha1, "", &opt);
diffcore_std(&opt);
diff_flush(&opt);
}
void cgit_diff_commit(struct commit *commit, filepair_fn fn)
{
unsigned char *old_sha1 = NULL;
if (commit->parents)
old_sha1 = commit->parents->item->object.sha1;
cgit_diff_tree(old_sha1, commit->object.sha1, fn);
}