#include "clar_libgit2.h"
#include "diff_helpers.h"
git_tree *resolve_commit_oid_to_tree(
git_repository *repo,
const char *partial_oid)
{
size_t len = strlen(partial_oid);
git_oid oid;
git_object *obj = NULL;
git_tree *tree = NULL;
if (git_oid_fromstrn(&oid, partial_oid, len) == 0)
git_object_lookup_prefix(&obj, repo, &oid, len, GIT_OBJ_ANY);
cl_assert(obj);
if (git_object_type(obj) == GIT_OBJ_TREE)
return (git_tree *)obj;
cl_assert(git_object_type(obj) == GIT_OBJ_COMMIT);
cl_git_pass(git_commit_tree(&tree, (git_commit *)obj));
git_object_free(obj);
return tree;
}
static char diff_pick_suffix(int mode)
{
if (S_ISDIR(mode))
return '/';
else if (GIT_PERMS_IS_EXEC(mode))
return '*';
else
return ' ';
}
static void fprintf_delta(FILE *fp, const git_diff_delta *delta, float progress)
{
char code = git_diff_status_char(delta->status);
char old_suffix = diff_pick_suffix(delta->old_file.mode);
char new_suffix = diff_pick_suffix(delta->new_file.mode);
fprintf(fp, "%c\t%s", code, delta->old_file.path);
if ((delta->old_file.path != delta->new_file.path &&
strcmp(delta->old_file.path, delta->new_file.path) != 0) ||
(delta->old_file.mode != delta->new_file.mode &&
delta->old_file.mode != 0 && delta->new_file.mode != 0))
fprintf(fp, "%c %s%c", old_suffix, delta->new_file.path, new_suffix);
else if (old_suffix != ' ')
fprintf(fp, "%c", old_suffix);
fprintf(fp, "\t[%.2f]\n", progress);
}
int diff_file_cb(
const git_diff_delta *delta,
float progress,
void *payload)
{
diff_expects *e = payload;
if (e->debug)
fprintf_delta(stderr, delta, progress);
if (e->names)
cl_assert_equal_s(e->names[e->files], delta->old_file.path);
if (e->statuses)
cl_assert_equal_i(e->statuses[e->files], (int)delta->status);
e->files++;
if ((delta->flags & GIT_DIFF_FLAG_BINARY) != 0)
e->files_binary++;
cl_assert(delta->status <= GIT_DELTA_TYPECHANGE);
e->file_status[delta->status] += 1;
return 0;
}
int diff_print_file_cb(
const git_diff_delta *delta,
float progress,
void *payload)
{
if (!payload) {
fprintf_delta(stderr, delta, progress);
return 0;
}
if (!((diff_expects *)payload)->debug)
fprintf_delta(stderr, delta, progress);
return diff_file_cb(delta, progress, payload);
}
int diff_hunk_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
void *payload)
{
diff_expects *e = payload;
const char *scan = hunk->header, *scan_end = scan + hunk->header_len;
GIT_UNUSED(delta);
/* confirm no NUL bytes in header text */
while (scan < scan_end)
cl_assert('\0' != *scan++);
e->hunks++;
e->hunk_old_lines += hunk->old_lines;
e->hunk_new_lines += hunk->new_lines;
return 0;
}
int diff_line_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
const git_diff_line *line,
void *payload)
{
diff_expects *e = payload;
GIT_UNUSED(delta);
GIT_UNUSED(hunk);
e->lines++;
switch (line->origin) {
case GIT_DIFF_LINE_CONTEXT:
case GIT_DIFF_LINE_CONTEXT_EOFNL: /* techically not a line */
e->line_ctxt++;
break;
case GIT_DIFF_LINE_ADDITION:
case GIT_DIFF_LINE_ADD_EOFNL: /* technically not a line add */
e->line_adds++;
break;
case GIT_DIFF_LINE_DELETION:
case GIT_DIFF_LINE_DEL_EOFNL: /* technically not a line delete */
e->line_dels++;
break;
default:
break;
}
return 0;
}
int diff_foreach_via_iterator(
git_diff *diff,
git_diff_file_cb file_cb,
git_diff_hunk_cb hunk_cb,
git_diff_line_cb line_cb,
void *data)
{
size_t d, num_d = git_diff_num_deltas(diff);
for (d = 0; d < num_d; ++d) {
git_patch *patch;
const git_diff_delta *delta;
size_t h, num_h;
cl_git_pass(git_patch_from_diff(&patch, diff, d));
cl_assert((delta = git_patch_get_delta(patch)) != NULL);
/* call file_cb for this file */
if (file_cb != NULL && file_cb(delta, (float)d / num_d, data) != 0) {
git_patch_free(patch);
goto abort;
}
/* if there are no changes, then the patch will be NULL */
if (!patch) {
cl_assert(delta->status == GIT_DELTA_UNMODIFIED ||
(delta->flags & GIT_DIFF_FLAG_BINARY) != 0);
continue;
}
if (!hunk_cb && !line_cb) {
git_patch_free(patch);
continue;
}
num_h = git_patch_num_hunks(patch);
for (h = 0; h < num_h; h++) {
const git_diff_hunk *hunk;
size_t l, num_l;
cl_git_pass(git_patch_get_hunk(&hunk, &num_l, patch, h));
if (hunk_cb && hunk_cb(delta, hunk, data) != 0) {
git_patch_free(patch);
goto abort;
}
for (l = 0; l < num_l; ++l) {
const git_diff_line *line;
cl_git_pass(git_patch_get_line_in_hunk(&line, patch, h, l));
if (line_cb &&
line_cb(delta, hunk, line, data) != 0) {
git_patch_free(patch);
goto abort;
}
}
}
git_patch_free(patch);
}
return 0;
abort:
giterr_clear();
return GIT_EUSER;
}
static int diff_print_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
const git_diff_line *line,
void *payload)
{
FILE *fp = payload;
GIT_UNUSED(delta); GIT_UNUSED(hunk);
if (line->origin == GIT_DIFF_LINE_CONTEXT ||
line->origin == GIT_DIFF_LINE_ADDITION ||
line->origin == GIT_DIFF_LINE_DELETION)
fputc(line->origin, fp);
fwrite(line->content, 1, line->content_len, fp);
return 0;
}
void diff_print(FILE *fp, git_diff *diff)
{
cl_git_pass(git_diff_print(
diff, GIT_DIFF_FORMAT_PATCH, diff_print_cb, fp ? fp : stderr));
}
void diff_print_raw(FILE *fp, git_diff *diff)
{
cl_git_pass(git_diff_print(
diff, GIT_DIFF_FORMAT_RAW, diff_print_cb, fp ? fp : stderr));
}
