commit - 486215cf28522983f77b83d7a2a5effc522fea5f
commit + c672cd5263e14c546a06d2b2132fd05bf20bbca0
blob - /dev/null
blob + 7e5ee06994a5158bc937ce8307bd19f51d7e0ef5 (mode 644)
--- /dev/null
+++ test/test020.left.txt
+/*
+ * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/queue.h>
+#include <sys/stat.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <sha1.h>
+#include <zlib.h>
+
+#include "got_object.h"
+#include "got_repository.h"
+#include "got_error.h"
+#include "got_diff.h"
+#include "got_opentemp.h"
+#include "got_path.h"
+#include "got_cancel.h"
+#include "got_worktree.h"
+
+#include "got_lib_diff.h"
+#include "got_lib_delta.h"
+#include "got_lib_inflate.h"
+#include "got_lib_object.h"
+
+static const struct got_error *
+diff_blobs(struct got_blob_object *blob1, struct got_blob_object *blob2,
+ const char *label1, const char *label2, mode_t mode1, mode_t mode2,
+ int diff_context, int ignore_whitespace, FILE *outfile,
+ struct got_diff_changes *changes)
+{
+ struct got_diff_state ds;
+ struct got_diff_args args;
+ const struct got_error *err = NULL;
+ FILE *f1 = NULL, *f2 = NULL;
+ char hex1[SHA1_DIGEST_STRING_LENGTH];
+ char hex2[SHA1_DIGEST_STRING_LENGTH];
+ char *idstr1 = NULL, *idstr2 = NULL;
+ size_t size1, size2;
+ int res, flags = 0;
+
+ if (blob1) {
+ f1 = got_opentemp();
+ if (f1 == NULL)
+ return got_error_from_errno("got_opentemp");
+ } else
+ flags |= D_EMPTY1;
+
+ if (blob2) {
+ f2 = got_opentemp();
+ if (f2 == NULL) {
+ err = got_error_from_errno("got_opentemp");
+ fclose(f1);
+ return err;
+ }
+ } else
+ flags |= D_EMPTY2;
+
+ size1 = 0;
+ if (blob1) {
+ idstr1 = got_object_blob_id_str(blob1, hex1, sizeof(hex1));
+ err = got_object_blob_dump_to_file(&size1, NULL, NULL, f1,
+ blob1);
+ if (err)
+ goto done;
+ } else
+ idstr1 = "/dev/null";
+
+ size2 = 0;
+ if (blob2) {
+ idstr2 = got_object_blob_id_str(blob2, hex2, sizeof(hex2));
+ err = got_object_blob_dump_to_file(&size2, NULL, NULL, f2,
+ blob2);
+ if (err)
+ goto done;
+ } else
+ idstr2 = "/dev/null";
+
+ memset(&ds, 0, sizeof(ds));
+ /* XXX should stat buffers be passed in args instead of ds? */
+ ds.stb1.st_mode = S_IFREG;
+ if (blob1)
+ ds.stb1.st_size = size1;
+ ds.stb1.st_mtime = 0; /* XXX */
+
+ ds.stb2.st_mode = S_IFREG;
+ if (blob2)
+ ds.stb2.st_size = size2;
+ ds.stb2.st_mtime = 0; /* XXX */
+
+ memset(&args, 0, sizeof(args));
+ args.diff_format = D_UNIFIED;
+ args.label[0] = label1 ? label1 : idstr1;
+ args.label[1] = label2 ? label2 : idstr2;
+ args.diff_context = diff_context;
+ flags |= D_PROTOTYPE;
+ if (ignore_whitespace)
+ flags |= D_IGNOREBLANKS;
+
+ if (outfile) {
+ char *modestr1 = NULL, *modestr2 = NULL;
+ int modebits;
+ if (mode1 && mode1 != mode2) {
+ if (S_ISLNK(mode1))
+ modebits = S_IFLNK;
+ else
+ modebits = (S_IRWXU | S_IRWXG | S_IRWXO);
+ if (asprintf(&modestr1, " (mode %o)",
+ mode1 & modebits) == -1) {
+ err = got_error_from_errno("asprintf");
+ goto done;
+ }
+ }
+ if (mode2 && mode1 != mode2) {
+ if (S_ISLNK(mode2))
+ modebits = S_IFLNK;
+ else
+ modebits = (S_IRWXU | S_IRWXG | S_IRWXO);
+ if (asprintf(&modestr2, " (mode %o)",
+ mode2 & modebits) == -1) {
+ err = got_error_from_errno("asprintf");
+ goto done;
+ }
+ }
+ fprintf(outfile, "blob - %s%s\n", idstr1,
+ modestr1 ? modestr1 : "");
+ fprintf(outfile, "blob + %s%s\n", idstr2,
+ modestr2 ? modestr2 : "");
+ free(modestr1);
+ free(modestr2);
+ }
+ err = got_diffreg(&res, f1, f2, flags, &args, &ds, outfile, changes);
+ got_diff_state_free(&ds);
+done:
+ if (f1 && fclose(f1) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ if (f2 && fclose(f2) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ return err;
+}
+
+const struct got_error *
+got_diff_blob_output_unidiff(void *arg, struct got_blob_object *blob1,
+ struct got_blob_object *blob2, struct got_object_id *id1,
+ struct got_object_id *id2, const char *label1, const char *label2,
+ mode_t mode1, mode_t mode2, struct got_repository *repo)
+{
+ struct got_diff_blob_output_unidiff_arg *a = arg;
+
+ return diff_blobs(blob1, blob2, label1, label2, mode1, mode2,
+ a->diff_context, a->ignore_whitespace, a->outfile, NULL);
+}
+
+const struct got_error *
+got_diff_blob(struct got_blob_object *blob1, struct got_blob_object *blob2,
+ const char *label1, const char *label2, int diff_context,
+ int ignore_whitespace, FILE *outfile)
+{
+ return diff_blobs(blob1, blob2, label1, label2, 0, 0, diff_context,
+ ignore_whitespace, outfile, NULL);
+}
+
+static const struct got_error *
+alloc_changes(struct got_diff_changes **changes)
+{
+ *changes = calloc(1, sizeof(**changes));
+ if (*changes == NULL)
+ return got_error_from_errno("calloc");
+ SIMPLEQ_INIT(&(*changes)->entries);
+ return NULL;
+}
+
+static const struct got_error *
+diff_blob_file(struct got_diff_changes **changes,
+ struct got_blob_object *blob1, const char *label1, FILE *f2, size_t size2,
+ const char *label2, int diff_context, int ignore_whitespace, FILE *outfile)
+{
+ struct got_diff_state ds;
+ struct got_diff_args args;
+ const struct got_error *err = NULL;
+ FILE *f1 = NULL;
+ char hex1[SHA1_DIGEST_STRING_LENGTH];
+ char *idstr1 = NULL;
+ size_t size1;
+ int res, flags = 0;
+
+ if (changes)
+ *changes = NULL;
+
+ size1 = 0;
+ if (blob1) {
+ f1 = got_opentemp();
+ if (f1 == NULL)
+ return got_error_from_errno("got_opentemp");
+ idstr1 = got_object_blob_id_str(blob1, hex1, sizeof(hex1));
+ err = got_object_blob_dump_to_file(&size1, NULL, NULL, f1,
+ blob1);
+ if (err)
+ goto done;
+ } else {
+ flags |= D_EMPTY1;
+ idstr1 = "/dev/null";
+ }
+
+ if (f2 == NULL)
+ flags |= D_EMPTY2;
+
+ memset(&ds, 0, sizeof(ds));
+ /* XXX should stat buffers be passed in args instead of ds? */
+ ds.stb1.st_mode = S_IFREG;
+ if (blob1)
+ ds.stb1.st_size = size1;
+ ds.stb1.st_mtime = 0; /* XXX */
+
+ ds.stb2.st_mode = S_IFREG;
+ ds.stb2.st_size = size2;
+ ds.stb2.st_mtime = 0; /* XXX */
+
+ memset(&args, 0, sizeof(args));
+ args.diff_format = D_UNIFIED;
+ args.label[0] = label2;
+ args.label[1] = label2;
+ args.diff_context = diff_context;
+ flags |= D_PROTOTYPE;
+ if (ignore_whitespace)
+ flags |= D_IGNOREBLANKS;
+
+ if (outfile) {
+ fprintf(outfile, "blob - %s\n", label1 ? label1 : idstr1);
+ fprintf(outfile, "file + %s\n",
+ f2 == NULL ? "/dev/null" : label2);
+ }
+ if (changes) {
+ err = alloc_changes(changes);
+ if (err)
+ return err;
+ }
+ err = got_diffreg(&res, f1, f2, flags, &args, &ds, outfile,
+ changes ? *changes : NULL);
+ got_diff_state_free(&ds);
+done:
+ if (f1 && fclose(f1) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ return err;
+}
+
+const struct got_error *
+got_diff_blob_file(struct got_blob_object *blob1, const char *label1,
+ FILE *f2, size_t size2, const char *label2, int diff_context,
+ int ignore_whitespace, FILE *outfile)
+{
+ return diff_blob_file(NULL, blob1, label1, f2, size2, label2,
+ diff_context, ignore_whitespace, outfile);
+}
+
+const struct got_error *
+got_diff_blob_file_lines_changed(struct got_diff_changes **changes,
+ struct got_blob_object *blob1, FILE *f2, size_t size2)
+{
+ return diff_blob_file(changes, blob1, NULL, f2, size2, NULL,
+ 0, 0, NULL);
+}
+
+const struct got_error *
+got_diff_blob_lines_changed(struct got_diff_changes **changes,
+ struct got_blob_object *blob1, struct got_blob_object *blob2)
+{
+ const struct got_error *err = NULL;
+
+ err = alloc_changes(changes);
+ if (err)
+ return err;
+
+ err = diff_blobs(blob1, blob2, NULL, NULL, 0, 0, 3, 0, NULL, *changes);
+ if (err) {
+ got_diff_free_changes(*changes);
+ *changes = NULL;
+ }
+ return err;
+}
+
+void
+got_diff_free_changes(struct got_diff_changes *changes)
+{
+ struct got_diff_change *change;
+ while (!SIMPLEQ_EMPTY(&changes->entries)) {
+ change = SIMPLEQ_FIRST(&changes->entries);
+ SIMPLEQ_REMOVE_HEAD(&changes->entries, entry);
+ free(change);
+ }
+ free(changes);
+}
+
+static const struct got_error *
+diff_added_blob(struct got_object_id *id, const char *label, mode_t mode,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob = NULL;
+ struct got_object *obj = NULL;
+
+ err = got_object_open(&obj, repo, id);
+ if (err)
+ return err;
+
+ err = got_object_blob_open(&blob, repo, obj, 8192);
+ if (err)
+ goto done;
+ err = cb(cb_arg, NULL, blob, NULL, id, NULL, label, 0, mode, repo);
+done:
+ got_object_close(obj);
+ if (blob)
+ got_object_blob_close(blob);
+ return err;
+}
+
+static const struct got_error *
+diff_modified_blob(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, mode_t mode1, mode_t mode2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_object *obj1 = NULL;
+ struct got_object *obj2 = NULL;
+ struct got_blob_object *blob1 = NULL;
+ struct got_blob_object *blob2 = NULL;
+
+ err = got_object_open(&obj1, repo, id1);
+ if (err)
+ return err;
+ if (obj1->type != GOT_OBJ_TYPE_BLOB) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_open(&obj2, repo, id2);
+ if (err)
+ goto done;
+ if (obj2->type != GOT_OBJ_TYPE_BLOB) {
+ err = got_error(GOT_ERR_BAD_OBJ_DATA);
+ goto done;
+ }
+
+ err = got_object_blob_open(&blob1, repo, obj1, 8192);
+ if (err)
+ goto done;
+
+ err = got_object_blob_open(&blob2, repo, obj2, 8192);
+ if (err)
+ goto done;
+
+ err = cb(cb_arg, blob1, blob2, id1, id2, label1, label2, mode1, mode2,
+ repo);
+done:
+ if (obj1)
+ got_object_close(obj1);
+ if (obj2)
+ got_object_close(obj2);
+ if (blob1)
+ got_object_blob_close(blob1);
+ if (blob2)
+ got_object_blob_close(blob2);
+ return err;
+}
+
+static const struct got_error *
+diff_deleted_blob(struct got_object_id *id, const char *label, mode_t mode,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob = NULL;
+ struct got_object *obj = NULL;
+
+ err = got_object_open(&obj, repo, id);
+ if (err)
+ return err;
+
+ err = got_object_blob_open(&blob, repo, obj, 8192);
+ if (err)
+ goto done;
+ err = cb(cb_arg, blob, NULL, id, NULL, label, NULL, mode, 0, repo);
+done:
+ got_object_close(obj);
+ if (blob)
+ got_object_blob_close(blob);
+ return err;
+}
+
+static const struct got_error *
+diff_added_tree(struct got_object_id *id, const char *label,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err = NULL;
+ struct got_object *treeobj = NULL;
+ struct got_tree_object *tree = NULL;
+
+ err = got_object_open(&treeobj, repo, id);
+ if (err)
+ goto done;
+
+ if (treeobj->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree, repo, treeobj);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(NULL, tree, NULL, label, repo, cb, cb_arg,
+ diff_content);
+done:
+ if (tree)
+ got_object_tree_close(tree);
+ if (treeobj)
+ got_object_close(treeobj);
+ return err;
+}
+
+static const struct got_error *
+diff_modified_tree(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg, int diff_content)
+{
+ const struct got_error *err;
+ struct got_object *treeobj1 = NULL;
+ struct got_object *treeobj2 = NULL;
+ struct got_tree_object *tree1 = NULL;
+ struct got_tree_object *tree2 = NULL;
+
+ err = got_object_open(&treeobj1, repo, id1);
+ if (err)
+ goto done;
+
+ if (treeobj1->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_open(&treeobj2, repo, id2);
+ if (err)
+ goto done;
+
+ if (treeobj2->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree1, repo, treeobj1);
+ if (err)
+ goto done;
+
+ err = got_object_tree_open(&tree2, repo, treeobj2);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(tree1, tree2, label1, label2, repo, cb, cb_arg,
+ diff_content);
+
+done:
+ if (tree1)
+ got_object_tree_close(tree1);
+ if (tree2)
+ got_object_tree_close(tree2);
+ if (treeobj1)
+ got_object_close(treeobj1);
+ if (treeobj2)
+ got_object_close(treeobj2);
+ return err;
+}
+
+static const struct got_error *
+diff_deleted_tree(struct got_object_id *id, const char *label,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err;
+ struct got_object *treeobj = NULL;
+ struct got_tree_object *tree = NULL;
+
+ err = got_object_open(&treeobj, repo, id);
+ if (err)
+ goto done;
+
+ if (treeobj->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree, repo, treeobj);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(tree, NULL, label, NULL, repo, cb, cb_arg,
+ diff_content);
+done:
+ if (tree)
+ got_object_tree_close(tree);
+ if (treeobj)
+ got_object_close(treeobj);
+ return err;
+}
+
+static const struct got_error *
+diff_kind_mismatch(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg)
+{
+ /* XXX TODO */
+ return NULL;
+}
+
+static const struct got_error *
+diff_entry_old_new(struct got_tree_entry *te1,
+ struct got_tree_entry *te2, const char *label1, const char *label2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err = NULL;
+ int id_match;
+
+ if (got_object_tree_entry_is_submodule(te1))
+ return NULL;
+
+ if (te2 == NULL) {
+ if (S_ISDIR(te1->mode))
+ err = diff_deleted_tree(&te1->id, label1, repo,
+ cb, cb_arg, diff_content);
+ else {
+ if (diff_content)
+ err = diff_deleted_blob(&te1->id, label1,
+ te1->mode, repo, cb, cb_arg);
+ else
+ err = cb(cb_arg, NULL, NULL, &te1->id, NULL,
+ label1, NULL, te1->mode, 0, repo);
+ }
+ return err;
+ } else if (got_object_tree_entry_is_submodule(te2))
+ return NULL;
+
+ id_match = (got_object_id_cmp(&te1->id, &te2->id) == 0);
+ if (S_ISDIR(te1->mode) && S_ISDIR(te2->mode)) {
+ if (!id_match)
+ return diff_modified_tree(&te1->id, &te2->id,
+ label1, label2, repo, cb, cb_arg, diff_content);
+ } else if ((S_ISREG(te1->mode) || S_ISLNK(te1->mode)) &&
+ (S_ISREG(te2->mode) || S_ISLNK(te2->mode))) {
+ if (!id_match ||
+ ((te1->mode & (S_IFLNK | S_IXUSR))) !=
+ (te2->mode & (S_IFLNK | S_IXUSR))) {
+ if (diff_content)
+ return diff_modified_blob(&te1->id, &te2->id,
+ label1, label2, te1->mode, te2->mode,
+ repo, cb, cb_arg);
+ else
+ return cb(cb_arg, NULL, NULL, &te1->id,
+ &te2->id, label1, label2, te1->mode,
+ te2->mode, repo);
+ }
+ }
+
+ if (id_match)
+ return NULL;
+
+ return diff_kind_mismatch(&te1->id, &te2->id, label1, label2, repo,
+ cb, cb_arg);
+}
+
+static const struct got_error *
+diff_entry_new_old(struct got_tree_entry *te2,
+ struct got_tree_entry *te1, const char *label2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ if (te1 != NULL) /* handled by diff_entry_old_new() */
+ return NULL;
+
+ if (got_object_tree_entry_is_submodule(te2))
+ return NULL;
+
+ if (S_ISDIR(te2->mode))
+ return diff_added_tree(&te2->id, label2, repo, cb, cb_arg,
+ diff_content);
+
+ if (diff_content)
+ return diff_added_blob(&te2->id, label2, te2->mode, repo, cb,
+ cb_arg);
+
+ return cb(cb_arg, NULL, NULL, NULL, &te2->id, NULL, label2, 0,
+ te2->mode, repo);
+}
+
+const struct got_error *
+got_diff_tree_collect_changed_paths(void *arg, struct got_blob_object *blob1,
+ struct got_blob_object *blob2, struct got_object_id *id1,
+ struct got_object_id *id2, const char *label1, const char *label2,
+ mode_t mode1, mode_t mode2, struct got_repository *repo)
+{
+ const struct got_error *err = NULL;
+ struct got_pathlist_head *paths = arg;
+ struct got_diff_changed_path *change = NULL;
+ char *path = NULL;
+
+ path = strdup(label2 ? label2 : label1);
+ if (path == NULL)
+ return got_error_from_errno("malloc");
+
+ change = malloc(sizeof(*change));
+ if (change == NULL) {
+ err = got_error_from_errno("malloc");
+ goto done;
+ }
+
+ change->status = GOT_STATUS_NO_CHANGE;
+ if (id1 == NULL)
+ change->status = GOT_STATUS_ADD;
+ else if (id2 == NULL)
+ change->status = GOT_STATUS_DELETE;
+ else {
+ if (got_object_id_cmp(id1, id2) != 0)
+ change->status = GOT_STATUS_MODIFY;
+ else if (mode1 != mode2)
+ change->status = GOT_STATUS_MODE_CHANGE;
+ }
+
+ err = got_pathlist_insert(NULL, paths, path, change);
+done:
+ if (err) {
+ free(path);
+ free(change);
+ }
+ return err;
+}
+
+const struct got_error *
+got_diff_tree(struct got_tree_object *tree1, struct got_tree_object *tree2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg, int diff_content)
+{
+ const struct got_error *err = NULL;
+ struct got_tree_entry *te1 = NULL;
+ struct got_tree_entry *te2 = NULL;
+ char *l1 = NULL, *l2 = NULL;
+ int tidx1 = 0, tidx2 = 0;
+
+ if (tree1) {
+ te1 = got_object_tree_get_entry(tree1, 0);
+ if (te1 && asprintf(&l1, "%s%s%s", label1, label1[0] ? "/" : "",
+ te1->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ if (tree2) {
+ te2 = got_object_tree_get_entry(tree2, 0);
+ if (te2 && asprintf(&l2, "%s%s%s", label2, label2[0] ? "/" : "",
+ te2->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+
+ do {
+ if (te1) {
+ struct got_tree_entry *te = NULL;
+ if (tree2)
+ te = got_object_tree_find_entry(tree2,
+ te1->name);
+ if (te) {
+ free(l2);
+ l2 = NULL;
+ if (te && asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ }
+ err = diff_entry_old_new(te1, te, l1, l2, repo, cb,
+ cb_arg, diff_content);
+ if (err)
+ break;
+ }
+
+ if (te2) {
+ struct got_tree_entry *te = NULL;
+ if (tree1)
+ te = got_object_tree_find_entry(tree1,
+ te2->name);
+ free(l2);
+ if (te) {
+ if (asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ } else {
+ if (asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te2->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ }
+ err = diff_entry_new_old(te2, te, l2, repo,
+ cb, cb_arg, diff_content);
+ if (err)
+ break;
+ }
+
+ free(l1);
+ l1 = NULL;
+ if (te1) {
+ tidx1++;
+ te1 = got_object_tree_get_entry(tree1, tidx1);
+ if (te1 &&
+ asprintf(&l1, "%s%s%s", label1,
+ label1[0] ? "/" : "", te1->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ free(l2);
+ l2 = NULL;
+ if (te2) {
+ tidx2++;
+ te2 = got_object_tree_get_entry(tree2, tidx2);
+ if (te2 &&
+ asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te2->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ } while (te1 || te2);
+
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_blobs(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, int diff_context,
+ int ignore_whitespace, struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob1 = NULL, *blob2 = NULL;
+
+ if (id1 == NULL && id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_blob(&blob1, repo, id1, 8192);
+ if (err)
+ goto done;
+ }
+ if (id2) {
+ err = got_object_open_as_blob(&blob2, repo, id2, 8192);
+ if (err)
+ goto done;
+ }
+ err = got_diff_blob(blob1, blob2, label1, label2, diff_context,
+ ignore_whitespace, outfile);
+done:
+ if (blob1)
+ got_object_blob_close(blob1);
+ if (blob2)
+ got_object_blob_close(blob2);
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_trees(struct got_object_id *id1, struct got_object_id *id2,
+ char *label1, char *label2, int diff_context, int ignore_whitespace,
+ struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_tree_object *tree1 = NULL, *tree2 = NULL;
+ struct got_diff_blob_output_unidiff_arg arg;
+
+ if (id1 == NULL && id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_tree(&tree1, repo, id1);
+ if (err)
+ goto done;
+ }
+ if (id2) {
+ err = got_object_open_as_tree(&tree2, repo, id2);
+ if (err)
+ goto done;
+ }
+ arg.diff_context = diff_context;
+ arg.ignore_whitespace = ignore_whitespace;
+ arg.outfile = outfile;
+ err = got_diff_tree(tree1, tree2, label1, label2, repo,
+ got_diff_blob_output_unidiff, &arg, 1);
+done:
+ if (tree1)
+ got_object_tree_close(tree1);
+ if (tree2)
+ got_object_tree_close(tree2);
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_commits(struct got_object_id *id1,
+ struct got_object_id *id2, int diff_context, int ignore_whitespace,
+ struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_commit_object *commit1 = NULL, *commit2 = NULL;
+
+ if (id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_commit(&commit1, repo, id1);
+ if (err)
+ goto done;
+ }
+
+ err = got_object_open_as_commit(&commit2, repo, id2);
+ if (err)
+ goto done;
+
+ err = got_diff_objects_as_trees(
+ commit1 ? got_object_commit_get_tree_id(commit1) : NULL,
+ got_object_commit_get_tree_id(commit2), "", "", diff_context,
+ ignore_whitespace, repo, outfile);
+done:
+ if (commit1)
+ got_object_commit_close(commit1);
+ if (commit2)
+ got_object_commit_close(commit2);
+ return err;
+}
+
+const struct got_error *
+got_diff_files(struct got_diff_changes **changes,
+ struct got_diff_state **ds,
+ struct got_diff_args **args,
+ int *flags,
+ FILE *f1, size_t size1, const char *label1,
+ FILE *f2, size_t size2, const char *label2,
+ int diff_context, FILE *outfile)
+{
+ const struct got_error *err = NULL;
+ int res;
+
+ *flags = 0;
+ *ds = calloc(1, sizeof(**ds));
+ if (*ds == NULL)
+ return got_error_from_errno("calloc");
+ *args = calloc(1, sizeof(**args));
+ if (*args == NULL) {
+ err = got_error_from_errno("calloc");
+ goto done;
+ }
+
+ if (changes)
+ *changes = NULL;
+
+ if (f1 == NULL)
+ *flags |= D_EMPTY1;
+
+ if (f2 == NULL)
+ *flags |= D_EMPTY2;
+
+ /* XXX should stat buffers be passed in args instead of ds? */
+ (*ds)->stb1.st_mode = S_IFREG;
+ (*ds)->stb1.st_size = size1;
+ (*ds)->stb1.st_mtime = 0; /* XXX */
+
+ (*ds)->stb2.st_mode = S_IFREG;
+ (*ds)->stb2.st_size = size2;
+ (*ds)->stb2.st_mtime = 0; /* XXX */
+
+ (*args)->diff_format = D_UNIFIED;
+ (*args)->label[0] = label1;
+ (*args)->label[1] = label2;
+ (*args)->diff_context = diff_context;
+ *flags |= D_PROTOTYPE;
+
+ if (outfile) {
+ fprintf(outfile, "file - %s\n",
+ f1 == NULL ? "/dev/null" : label1);
+ fprintf(outfile, "file + %s\n",
+ f2 == NULL ? "/dev/null" : label2);
+ }
+ if (changes) {
+ err = alloc_changes(changes);
+ if (err)
+ goto done;
+ }
+ err = got_diffreg(&res, f1, f2, *flags, *args, *ds, outfile,
+ changes ? *changes : NULL);
+done:
+ if (err) {
+ if (*ds) {
+ got_diff_state_free(*ds);
+ free(*ds);
+ *ds = NULL;
+ }
+ if (*args) {
+ free(*args);
+ *args = NULL;
+ }
+ if (changes) {
+ if (*changes)
+ got_diff_free_changes(*changes);
+ *changes = NULL;
+ }
+ }
+ return err;
+}
blob - /dev/null
blob + 9ed331be5c5b709d71129cb883b6c47a9f9c6a96 (mode 644)
--- /dev/null
+++ test/test020.right.txt
+/*
+ * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/queue.h>
+#include <sys/stat.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <sha1.h>
+#include <zlib.h>
+
+#include "got_object.h"
+#include "got_repository.h"
+#include "got_error.h"
+#include "got_diff.h"
+#include "got_opentemp.h"
+#include "got_path.h"
+#include "got_cancel.h"
+#include "got_worktree.h"
+
+#include "got_lib_diff.h"
+#include "got_lib_delta.h"
+#include "got_lib_inflate.h"
+#include "got_lib_object.h"
+
+static const struct got_error *
+add_line_offset(off_t **line_offsets, size_t *nlines, off_t off)
+{
+ off_t *p;
+
+ p = reallocarray(*line_offsets, *nlines + 1, sizeof(off_t));
+ if (p == NULL)
+ return got_error_from_errno("reallocarray");
+ *line_offsets = p;
+ (*line_offsets)[*nlines] = off;
+ (*nlines)++;
+ return NULL;
+}
+
+static const struct got_error *
+diff_blobs(off_t **line_offsets, size_t *nlines,
+ struct got_diffreg_result **resultp, struct got_blob_object *blob1,
+ struct got_blob_object *blob2,
+ const char *label1, const char *label2, mode_t mode1, mode_t mode2,
+ int diff_context, int ignore_whitespace, FILE *outfile)
+{
+ const struct got_error *err = NULL, *free_err;
+ FILE *f1 = NULL, *f2 = NULL;
+ char hex1[SHA1_DIGEST_STRING_LENGTH];
+ char hex2[SHA1_DIGEST_STRING_LENGTH];
+ char *idstr1 = NULL, *idstr2 = NULL;
+ size_t size1, size2;
+ struct got_diffreg_result *result;
+ off_t outoff = 0;
+ int n;
+
+ if (line_offsets && *line_offsets && *nlines > 0)
+ outoff = (*line_offsets)[*nlines - 1];
+
+ if (resultp)
+ *resultp = NULL;
+
+ if (blob1) {
+ f1 = got_opentemp();
+ if (f1 == NULL)
+ return got_error_from_errno("got_opentemp");
+ }
+
+ if (blob2) {
+ f2 = got_opentemp();
+ if (f2 == NULL) {
+ err = got_error_from_errno("got_opentemp");
+ fclose(f1);
+ return err;
+ }
+ }
+
+ size1 = 0;
+ if (blob1) {
+ idstr1 = got_object_blob_id_str(blob1, hex1, sizeof(hex1));
+ err = got_object_blob_dump_to_file(&size1, NULL, NULL, f1,
+ blob1);
+ if (err)
+ goto done;
+ } else
+ idstr1 = "/dev/null";
+
+ size2 = 0;
+ if (blob2) {
+ idstr2 = got_object_blob_id_str(blob2, hex2, sizeof(hex2));
+ err = got_object_blob_dump_to_file(&size2, NULL, NULL, f2,
+ blob2);
+ if (err)
+ goto done;
+ } else
+ idstr2 = "/dev/null";
+
+ if (outfile) {
+ char *modestr1 = NULL, *modestr2 = NULL;
+ int modebits;
+ if (mode1 && mode1 != mode2) {
+ if (S_ISLNK(mode1))
+ modebits = S_IFLNK;
+ else
+ modebits = (S_IRWXU | S_IRWXG | S_IRWXO);
+ if (asprintf(&modestr1, " (mode %o)",
+ mode1 & modebits) == -1) {
+ err = got_error_from_errno("asprintf");
+ goto done;
+ }
+ }
+ if (mode2 && mode1 != mode2) {
+ if (S_ISLNK(mode2))
+ modebits = S_IFLNK;
+ else
+ modebits = (S_IRWXU | S_IRWXG | S_IRWXO);
+ if (asprintf(&modestr2, " (mode %o)",
+ mode2 & modebits) == -1) {
+ err = got_error_from_errno("asprintf");
+ goto done;
+ }
+ }
+ n = fprintf(outfile, "blob - %s%s\n", idstr1,
+ modestr1 ? modestr1 : "");
+ if (n < 0) {
+ err = got_error_from_errno("fprintf");
+ goto done;
+ }
+ outoff += n;
+ if (line_offsets) {
+ err = add_line_offset(line_offsets, nlines, outoff);
+ if (err)
+ goto done;
+ }
+
+ n = fprintf(outfile, "blob + %s%s\n", idstr2,
+ modestr2 ? modestr2 : "");
+ if (n < 0) {
+ err = got_error_from_errno("fprintf");
+ goto done;
+ }
+ outoff += n;
+ if (line_offsets) {
+ err = add_line_offset(line_offsets, nlines, outoff);
+ if (err)
+ goto done;
+ }
+
+ free(modestr1);
+ free(modestr2);
+ }
+ err = got_diffreg(&result, f1, f2, GOT_DIFF_ALGORITHM_MYERS,
+ ignore_whitespace);
+ if (err)
+ goto done;
+
+ if (outfile) {
+ err = got_diffreg_output(line_offsets, nlines, result, f1, f2,
+ label1 ? label1 : idstr1,
+ label2 ? label2 : idstr2,
+ GOT_DIFF_OUTPUT_UNIDIFF, diff_context, outfile);
+ if (err)
+ goto done;
+ }
+
+ if (resultp && err == NULL)
+ *resultp = result;
+ else {
+ free_err = got_diffreg_result_free(result);
+ if (free_err && err == NULL)
+ err = free_err;
+ }
+done:
+ if (f1 && fclose(f1) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ if (f2 && fclose(f2) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ return err;
+}
+
+const struct got_error *
+got_diff_blob_output_unidiff(void *arg, struct got_blob_object *blob1,
+ struct got_blob_object *blob2, struct got_object_id *id1,
+ struct got_object_id *id2, const char *label1, const char *label2,
+ mode_t mode1, mode_t mode2, struct got_repository *repo)
+{
+ struct got_diff_blob_output_unidiff_arg *a = arg;
+
+ return diff_blobs(&a->line_offsets, &a->nlines, NULL,
+ blob1, blob2, label1, label2, mode1, mode2, a->diff_context,
+ a->ignore_whitespace, a->outfile);
+}
+
+const struct got_error *
+got_diff_blob(off_t **line_offsets, size_t *nlines,
+ struct got_blob_object *blob1, struct got_blob_object *blob2,
+ const char *label1, const char *label2, int diff_context,
+ int ignore_whitespace, FILE *outfile)
+{
+ return diff_blobs(line_offsets, nlines, NULL, blob1, blob2,
+ label1, label2, 0, 0, diff_context, ignore_whitespace, outfile);
+}
+
+static const struct got_error *
+diff_blob_file(struct got_diffreg_result **resultp,
+ struct got_blob_object *blob1, const char *label1, FILE *f2, size_t size2,
+ const char *label2, int diff_context, int ignore_whitespace, FILE *outfile)
+{
+ const struct got_error *err = NULL, *free_err;
+ FILE *f1 = NULL;
+ char hex1[SHA1_DIGEST_STRING_LENGTH];
+ char *idstr1 = NULL;
+ size_t size1;
+ struct got_diffreg_result *result = NULL;
+
+ if (resultp)
+ *resultp = NULL;
+
+ size1 = 0;
+ if (blob1) {
+ f1 = got_opentemp();
+ if (f1 == NULL)
+ return got_error_from_errno("got_opentemp");
+ idstr1 = got_object_blob_id_str(blob1, hex1, sizeof(hex1));
+ err = got_object_blob_dump_to_file(&size1, NULL, NULL, f1,
+ blob1);
+ if (err)
+ goto done;
+ } else {
+ idstr1 = "/dev/null";
+ }
+
+ if (outfile) {
+ fprintf(outfile, "blob - %s\n", label1 ? label1 : idstr1);
+ fprintf(outfile, "file + %s\n",
+ f2 == NULL ? "/dev/null" : label2);
+ }
+
+ err = got_diffreg(&result, f1, f2, GOT_DIFF_ALGORITHM_MYERS,
+ ignore_whitespace);
+ if (err)
+ goto done;
+
+ if (outfile) {
+ err = got_diffreg_output(NULL, NULL, result, f1, f2,
+ label2, label2, GOT_DIFF_OUTPUT_UNIDIFF, diff_context,
+ outfile);
+ if (err)
+ goto done;
+ }
+
+ if (resultp && err == NULL)
+ *resultp = result;
+ else if (result) {
+ free_err = got_diffreg_result_free(result);
+ if (free_err && err == NULL)
+ err = free_err;
+ }
+done:
+ if (f1 && fclose(f1) != 0 && err == NULL)
+ err = got_error_from_errno("fclose");
+ return err;
+}
+
+const struct got_error *
+got_diff_blob_file(struct got_blob_object *blob1, const char *label1,
+ FILE *f2, size_t size2, const char *label2, int diff_context,
+ int ignore_whitespace, FILE *outfile)
+{
+ return diff_blob_file(NULL, blob1, label1, f2, size2, label2,
+ diff_context, ignore_whitespace, outfile);
+}
+
+const struct got_error *
+got_diff_blob_prepared_file(struct got_diffreg_result **resultp,
+ struct diff_data *data1, struct got_blob_object *blob1,
+ struct diff_data *data2, FILE *f2, char *p2, size_t size2,
+ const struct diff_config *cfg, int ignore_whitespace)
+{
+ const struct got_error *err = NULL, *free_err;
+ FILE *f1 = NULL;
+ char hex1[SHA1_DIGEST_STRING_LENGTH];
+ char *idstr1 = NULL, *p1 = NULL;
+ size_t size1, size;
+ struct got_diffreg_result *result = NULL;
+ int f1_created = 0;
+
+ *resultp = NULL;
+
+ size1 = 0;
+ if (blob1) {
+ f1 = got_opentemp();
+ if (f1 == NULL)
+ return got_error_from_errno("got_opentemp");
+ idstr1 = got_object_blob_id_str(blob1, hex1, sizeof(hex1));
+ err = got_object_blob_dump_to_file(&size1, NULL, NULL, f1,
+ blob1);
+ if (err)
+ goto done;
+ } else {
+ idstr1 = "/dev/null";
+ }
+
+ err = got_diff_prepare_file(&f1, &p1, &f1_created, &size,
+ data1, cfg, ignore_whitespace);
+ if (err)
+ goto done;
+
+ err = got_diffreg_prepared_files(&result, cfg, data1, f1,
+ p1, size1, data2, f2, p2, size2);
+ if (err)
+ goto done;
+
+ *resultp = result;
+done:
+ if (err) {
+ if (result)
+ free_err = got_diffreg_result_free_left(result);
+ else
+ free_err = got_diffreg_close(f1, p1, size1, NULL,
+ NULL, 0);
+ if (free_err && err == NULL)
+ err = free_err;
+ }
+ return err;
+}
+
+static const struct got_error *
+diff_added_blob(struct got_object_id *id, const char *label, mode_t mode,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob = NULL;
+ struct got_object *obj = NULL;
+
+ err = got_object_open(&obj, repo, id);
+ if (err)
+ return err;
+
+ err = got_object_blob_open(&blob, repo, obj, 8192);
+ if (err)
+ goto done;
+ err = cb(cb_arg, NULL, blob, NULL, id, NULL, label, 0, mode, repo);
+done:
+ got_object_close(obj);
+ if (blob)
+ got_object_blob_close(blob);
+ return err;
+}
+
+static const struct got_error *
+diff_modified_blob(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, mode_t mode1, mode_t mode2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_object *obj1 = NULL;
+ struct got_object *obj2 = NULL;
+ struct got_blob_object *blob1 = NULL;
+ struct got_blob_object *blob2 = NULL;
+
+ err = got_object_open(&obj1, repo, id1);
+ if (err)
+ return err;
+ if (obj1->type != GOT_OBJ_TYPE_BLOB) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_open(&obj2, repo, id2);
+ if (err)
+ goto done;
+ if (obj2->type != GOT_OBJ_TYPE_BLOB) {
+ err = got_error(GOT_ERR_BAD_OBJ_DATA);
+ goto done;
+ }
+
+ err = got_object_blob_open(&blob1, repo, obj1, 8192);
+ if (err)
+ goto done;
+
+ err = got_object_blob_open(&blob2, repo, obj2, 8192);
+ if (err)
+ goto done;
+
+ err = cb(cb_arg, blob1, blob2, id1, id2, label1, label2, mode1, mode2,
+ repo);
+done:
+ if (obj1)
+ got_object_close(obj1);
+ if (obj2)
+ got_object_close(obj2);
+ if (blob1)
+ got_object_blob_close(blob1);
+ if (blob2)
+ got_object_blob_close(blob2);
+ return err;
+}
+
+static const struct got_error *
+diff_deleted_blob(struct got_object_id *id, const char *label, mode_t mode,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob = NULL;
+ struct got_object *obj = NULL;
+
+ err = got_object_open(&obj, repo, id);
+ if (err)
+ return err;
+
+ err = got_object_blob_open(&blob, repo, obj, 8192);
+ if (err)
+ goto done;
+ err = cb(cb_arg, blob, NULL, id, NULL, label, NULL, mode, 0, repo);
+done:
+ got_object_close(obj);
+ if (blob)
+ got_object_blob_close(blob);
+ return err;
+}
+
+static const struct got_error *
+diff_added_tree(struct got_object_id *id, const char *label,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err = NULL;
+ struct got_object *treeobj = NULL;
+ struct got_tree_object *tree = NULL;
+
+ err = got_object_open(&treeobj, repo, id);
+ if (err)
+ goto done;
+
+ if (treeobj->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree, repo, treeobj);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(NULL, tree, NULL, label, repo, cb, cb_arg,
+ diff_content);
+done:
+ if (tree)
+ got_object_tree_close(tree);
+ if (treeobj)
+ got_object_close(treeobj);
+ return err;
+}
+
+static const struct got_error *
+diff_modified_tree(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg, int diff_content)
+{
+ const struct got_error *err;
+ struct got_object *treeobj1 = NULL;
+ struct got_object *treeobj2 = NULL;
+ struct got_tree_object *tree1 = NULL;
+ struct got_tree_object *tree2 = NULL;
+
+ err = got_object_open(&treeobj1, repo, id1);
+ if (err)
+ goto done;
+
+ if (treeobj1->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_open(&treeobj2, repo, id2);
+ if (err)
+ goto done;
+
+ if (treeobj2->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree1, repo, treeobj1);
+ if (err)
+ goto done;
+
+ err = got_object_tree_open(&tree2, repo, treeobj2);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(tree1, tree2, label1, label2, repo, cb, cb_arg,
+ diff_content);
+
+done:
+ if (tree1)
+ got_object_tree_close(tree1);
+ if (tree2)
+ got_object_tree_close(tree2);
+ if (treeobj1)
+ got_object_close(treeobj1);
+ if (treeobj2)
+ got_object_close(treeobj2);
+ return err;
+}
+
+static const struct got_error *
+diff_deleted_tree(struct got_object_id *id, const char *label,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err;
+ struct got_object *treeobj = NULL;
+ struct got_tree_object *tree = NULL;
+
+ err = got_object_open(&treeobj, repo, id);
+ if (err)
+ goto done;
+
+ if (treeobj->type != GOT_OBJ_TYPE_TREE) {
+ err = got_error(GOT_ERR_OBJ_TYPE);
+ goto done;
+ }
+
+ err = got_object_tree_open(&tree, repo, treeobj);
+ if (err)
+ goto done;
+
+ err = got_diff_tree(tree, NULL, label, NULL, repo, cb, cb_arg,
+ diff_content);
+done:
+ if (tree)
+ got_object_tree_close(tree);
+ if (treeobj)
+ got_object_close(treeobj);
+ return err;
+}
+
+static const struct got_error *
+diff_kind_mismatch(struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg)
+{
+ /* XXX TODO */
+ return NULL;
+}
+
+static const struct got_error *
+diff_entry_old_new(struct got_tree_entry *te1,
+ struct got_tree_entry *te2, const char *label1, const char *label2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ const struct got_error *err = NULL;
+ int id_match;
+
+ if (got_object_tree_entry_is_submodule(te1))
+ return NULL;
+
+ if (te2 == NULL) {
+ if (S_ISDIR(te1->mode))
+ err = diff_deleted_tree(&te1->id, label1, repo,
+ cb, cb_arg, diff_content);
+ else {
+ if (diff_content)
+ err = diff_deleted_blob(&te1->id, label1,
+ te1->mode, repo, cb, cb_arg);
+ else
+ err = cb(cb_arg, NULL, NULL, &te1->id, NULL,
+ label1, NULL, te1->mode, 0, repo);
+ }
+ return err;
+ } else if (got_object_tree_entry_is_submodule(te2))
+ return NULL;
+
+ id_match = (got_object_id_cmp(&te1->id, &te2->id) == 0);
+ if (S_ISDIR(te1->mode) && S_ISDIR(te2->mode)) {
+ if (!id_match)
+ return diff_modified_tree(&te1->id, &te2->id,
+ label1, label2, repo, cb, cb_arg, diff_content);
+ } else if ((S_ISREG(te1->mode) || S_ISLNK(te1->mode)) &&
+ (S_ISREG(te2->mode) || S_ISLNK(te2->mode))) {
+ if (!id_match ||
+ ((te1->mode & (S_IFLNK | S_IXUSR))) !=
+ (te2->mode & (S_IFLNK | S_IXUSR))) {
+ if (diff_content)
+ return diff_modified_blob(&te1->id, &te2->id,
+ label1, label2, te1->mode, te2->mode,
+ repo, cb, cb_arg);
+ else
+ return cb(cb_arg, NULL, NULL, &te1->id,
+ &te2->id, label1, label2, te1->mode,
+ te2->mode, repo);
+ }
+ }
+
+ if (id_match)
+ return NULL;
+
+ return diff_kind_mismatch(&te1->id, &te2->id, label1, label2, repo,
+ cb, cb_arg);
+}
+
+static const struct got_error *
+diff_entry_new_old(struct got_tree_entry *te2,
+ struct got_tree_entry *te1, const char *label2,
+ struct got_repository *repo, got_diff_blob_cb cb, void *cb_arg,
+ int diff_content)
+{
+ if (te1 != NULL) /* handled by diff_entry_old_new() */
+ return NULL;
+
+ if (got_object_tree_entry_is_submodule(te2))
+ return NULL;
+
+ if (S_ISDIR(te2->mode))
+ return diff_added_tree(&te2->id, label2, repo, cb, cb_arg,
+ diff_content);
+
+ if (diff_content)
+ return diff_added_blob(&te2->id, label2, te2->mode, repo, cb,
+ cb_arg);
+
+ return cb(cb_arg, NULL, NULL, NULL, &te2->id, NULL, label2, 0,
+ te2->mode, repo);
+}
+
+const struct got_error *
+got_diff_tree_collect_changed_paths(void *arg, struct got_blob_object *blob1,
+ struct got_blob_object *blob2, struct got_object_id *id1,
+ struct got_object_id *id2, const char *label1, const char *label2,
+ mode_t mode1, mode_t mode2, struct got_repository *repo)
+{
+ const struct got_error *err = NULL;
+ struct got_pathlist_head *paths = arg;
+ struct got_diff_changed_path *change = NULL;
+ char *path = NULL;
+
+ path = strdup(label2 ? label2 : label1);
+ if (path == NULL)
+ return got_error_from_errno("malloc");
+
+ change = malloc(sizeof(*change));
+ if (change == NULL) {
+ err = got_error_from_errno("malloc");
+ goto done;
+ }
+
+ change->status = GOT_STATUS_NO_CHANGE;
+ if (id1 == NULL)
+ change->status = GOT_STATUS_ADD;
+ else if (id2 == NULL)
+ change->status = GOT_STATUS_DELETE;
+ else {
+ if (got_object_id_cmp(id1, id2) != 0)
+ change->status = GOT_STATUS_MODIFY;
+ else if (mode1 != mode2)
+ change->status = GOT_STATUS_MODE_CHANGE;
+ }
+
+ err = got_pathlist_insert(NULL, paths, path, change);
+done:
+ if (err) {
+ free(path);
+ free(change);
+ }
+ return err;
+}
+
+const struct got_error *
+got_diff_tree(struct got_tree_object *tree1, struct got_tree_object *tree2,
+ const char *label1, const char *label2, struct got_repository *repo,
+ got_diff_blob_cb cb, void *cb_arg, int diff_content)
+{
+ const struct got_error *err = NULL;
+ struct got_tree_entry *te1 = NULL;
+ struct got_tree_entry *te2 = NULL;
+ char *l1 = NULL, *l2 = NULL;
+ int tidx1 = 0, tidx2 = 0;
+
+ if (tree1) {
+ te1 = got_object_tree_get_entry(tree1, 0);
+ if (te1 && asprintf(&l1, "%s%s%s", label1, label1[0] ? "/" : "",
+ te1->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ if (tree2) {
+ te2 = got_object_tree_get_entry(tree2, 0);
+ if (te2 && asprintf(&l2, "%s%s%s", label2, label2[0] ? "/" : "",
+ te2->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+
+ do {
+ if (te1) {
+ struct got_tree_entry *te = NULL;
+ if (tree2)
+ te = got_object_tree_find_entry(tree2,
+ te1->name);
+ if (te) {
+ free(l2);
+ l2 = NULL;
+ if (te && asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ }
+ err = diff_entry_old_new(te1, te, l1, l2, repo, cb,
+ cb_arg, diff_content);
+ if (err)
+ break;
+ }
+
+ if (te2) {
+ struct got_tree_entry *te = NULL;
+ if (tree1)
+ te = got_object_tree_find_entry(tree1,
+ te2->name);
+ free(l2);
+ if (te) {
+ if (asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ } else {
+ if (asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te2->name) == -1)
+ return
+ got_error_from_errno("asprintf");
+ }
+ err = diff_entry_new_old(te2, te, l2, repo,
+ cb, cb_arg, diff_content);
+ if (err)
+ break;
+ }
+
+ free(l1);
+ l1 = NULL;
+ if (te1) {
+ tidx1++;
+ te1 = got_object_tree_get_entry(tree1, tidx1);
+ if (te1 &&
+ asprintf(&l1, "%s%s%s", label1,
+ label1[0] ? "/" : "", te1->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ free(l2);
+ l2 = NULL;
+ if (te2) {
+ tidx2++;
+ te2 = got_object_tree_get_entry(tree2, tidx2);
+ if (te2 &&
+ asprintf(&l2, "%s%s%s", label2,
+ label2[0] ? "/" : "", te2->name) == -1)
+ return got_error_from_errno("asprintf");
+ }
+ } while (te1 || te2);
+
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_blobs(off_t **line_offsets, size_t *nlines,
+ struct got_object_id *id1, struct got_object_id *id2,
+ const char *label1, const char *label2, int diff_context,
+ int ignore_whitespace, struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_blob_object *blob1 = NULL, *blob2 = NULL;
+
+ if (id1 == NULL && id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_blob(&blob1, repo, id1, 8192);
+ if (err)
+ goto done;
+ }
+ if (id2) {
+ err = got_object_open_as_blob(&blob2, repo, id2, 8192);
+ if (err)
+ goto done;
+ }
+ err = got_diff_blob(line_offsets, nlines, blob1, blob2,
+ label1, label2, diff_context, ignore_whitespace, outfile);
+done:
+ if (blob1)
+ got_object_blob_close(blob1);
+ if (blob2)
+ got_object_blob_close(blob2);
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_trees(off_t **line_offsets, size_t *nlines,
+ struct got_object_id *id1, struct got_object_id *id2,
+ char *label1, char *label2, int diff_context, int ignore_whitespace,
+ struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_tree_object *tree1 = NULL, *tree2 = NULL;
+ struct got_diff_blob_output_unidiff_arg arg;
+ int want_lineoffsets = (line_offsets != NULL && *line_offsets != NULL);
+
+ if (id1 == NULL && id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_tree(&tree1, repo, id1);
+ if (err)
+ goto done;
+ }
+ if (id2) {
+ err = got_object_open_as_tree(&tree2, repo, id2);
+ if (err)
+ goto done;
+ }
+ arg.diff_context = diff_context;
+ arg.ignore_whitespace = ignore_whitespace;
+ arg.outfile = outfile;
+ if (want_lineoffsets) {
+ arg.line_offsets = *line_offsets;
+ arg.nlines = *nlines;
+ } else {
+ arg.line_offsets = NULL;
+ arg.nlines = 0;
+ }
+ err = got_diff_tree(tree1, tree2, label1, label2, repo,
+ got_diff_blob_output_unidiff, &arg, 1);
+
+ if (want_lineoffsets) {
+ *line_offsets = arg.line_offsets; /* was likely re-allocated */
+ *nlines = arg.nlines;
+ }
+done:
+ if (tree1)
+ got_object_tree_close(tree1);
+ if (tree2)
+ got_object_tree_close(tree2);
+ return err;
+}
+
+const struct got_error *
+got_diff_objects_as_commits(off_t **line_offsets, size_t *nlines,
+ struct got_object_id *id1, struct got_object_id *id2,
+ int diff_context, int ignore_whitespace,
+ struct got_repository *repo, FILE *outfile)
+{
+ const struct got_error *err;
+ struct got_commit_object *commit1 = NULL, *commit2 = NULL;
+
+ if (id2 == NULL)
+ return got_error(GOT_ERR_NO_OBJ);
+
+ if (id1) {
+ err = got_object_open_as_commit(&commit1, repo, id1);
+ if (err)
+ goto done;
+ }
+
+ err = got_object_open_as_commit(&commit2, repo, id2);
+ if (err)
+ goto done;
+
+ err = got_diff_objects_as_trees(line_offsets, nlines,
+ commit1 ? got_object_commit_get_tree_id(commit1) : NULL,
+ got_object_commit_get_tree_id(commit2), "", "", diff_context,
+ ignore_whitespace, repo, outfile);
+done:
+ if (commit1)
+ got_object_commit_close(commit1);
+ if (commit2)
+ got_object_commit_close(commit2);
+ return err;
+}
+
+const struct got_error *
+got_diff_files(struct got_diffreg_result **resultp,
+ FILE *f1, const char *label1, FILE *f2, const char *label2,
+ int diff_context, int ignore_whitespace, FILE *outfile)
+{
+ const struct got_error *err = NULL;
+ struct got_diffreg_result *diffreg_result = NULL;
+
+ if (resultp)
+ *resultp = NULL;
+
+ if (outfile) {
+ fprintf(outfile, "file - %s\n",
+ f1 == NULL ? "/dev/null" : label1);
+ fprintf(outfile, "file + %s\n",
+ f2 == NULL ? "/dev/null" : label2);
+ }
+
+ err = got_diffreg(&diffreg_result, f1, f2, GOT_DIFF_ALGORITHM_MYERS,
+ ignore_whitespace);
+ if (err)
+ goto done;
+
+ if (outfile) {
+ err = got_diffreg_output(NULL, NULL, diffreg_result,
+ f1, f2, label1, label2, GOT_DIFF_OUTPUT_UNIDIFF,
+ diff_context, outfile);
+ if (err)
+ goto done;
+ }
+
+done:
+ if (resultp && err == NULL)
+ *resultp = diffreg_result;
+ else if (diffreg_result) {
+ const struct got_error *free_err;
+ free_err = got_diffreg_result_free(diffreg_result);
+ if (free_err && err == NULL)
+ err = free_err;
+ }
+
+ return err;
+}
