Merge branch 'rs/grep-no-recursive'
[gitweb.git] / diff.c
diff --git a/diff.c b/diff.c
index f0c7557b40443da060c3070c602dd03f49b0d689..42ba9e48d72a20f2a5961e37f86bb6c4c3b2ba39 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -554,14 +554,15 @@ static int count_lines(const char *data, int size)
        return count;
 }
 
-static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
+static int fill_mmfile(struct repository *r, mmfile_t *mf,
+                      struct diff_filespec *one)
 {
        if (!DIFF_FILE_VALID(one)) {
                mf->ptr = (char *)""; /* does not matter */
                mf->size = 0;
                return 0;
        }
-       else if (diff_populate_filespec(one, 0))
+       else if (diff_populate_filespec(r, one, 0))
                return -1;
 
        mf->ptr = one->data;
@@ -570,11 +571,12 @@ static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
 }
 
 /* like fill_mmfile, but only for size, so we can avoid retrieving blob */
-static unsigned long diff_filespec_size(struct diff_filespec *one)
+static unsigned long diff_filespec_size(struct repository *r,
+                                       struct diff_filespec *one)
 {
        if (!DIFF_FILE_VALID(one))
                return 0;
-       diff_populate_filespec(one, CHECK_SIZE_ONLY);
+       diff_populate_filespec(r, one, CHECK_SIZE_ONLY);
        return one->size;
 }
 
@@ -1714,12 +1716,12 @@ static void emit_rewrite_diff(const char *name_a,
        quote_two_c_style(&a_name, a_prefix, name_a, 0);
        quote_two_c_style(&b_name, b_prefix, name_b, 0);
 
-       size_one = fill_textconv(textconv_one, one, &data_one);
-       size_two = fill_textconv(textconv_two, two, &data_two);
+       size_one = fill_textconv(o->repo, textconv_one, one, &data_one);
+       size_two = fill_textconv(o->repo, textconv_two, two, &data_two);
 
        memset(&ecbdata, 0, sizeof(ecbdata));
        ecbdata.color_diff = want_color(o->use_color);
-       ecbdata.ws_rule = whitespace_rule(name_b);
+       ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b);
        ecbdata.opt = o;
        if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
                mmfile_t mf1, mf2;
@@ -2107,23 +2109,25 @@ static void diff_words_flush(struct emit_callback *ecbdata)
        }
 }
 
-static void diff_filespec_load_driver(struct diff_filespec *one)
+static void diff_filespec_load_driver(struct diff_filespec *one,
+                                     struct index_state *istate)
 {
        /* Use already-loaded driver */
        if (one->driver)
                return;
 
        if (S_ISREG(one->mode))
-               one->driver = userdiff_find_by_path(one->path);
+               one->driver = userdiff_find_by_path(istate, one->path);
 
        /* Fallback to default settings */
        if (!one->driver)
                one->driver = userdiff_find_by_name("default");
 }
 
-static const char *userdiff_word_regex(struct diff_filespec *one)
+static const char *userdiff_word_regex(struct diff_filespec *one,
+                                      struct index_state *istate)
 {
-       diff_filespec_load_driver(one);
+       diff_filespec_load_driver(one, istate);
        return one->driver->word_regex;
 }
 
@@ -2146,9 +2150,9 @@ static void init_diff_words_data(struct emit_callback *ecbdata,
                        xcalloc(1, sizeof(struct emitted_diff_symbols));
 
        if (!o->word_regex)
-               o->word_regex = userdiff_word_regex(one);
+               o->word_regex = userdiff_word_regex(one, o->repo->index);
        if (!o->word_regex)
-               o->word_regex = userdiff_word_regex(two);
+               o->word_regex = userdiff_word_regex(two, o->repo->index);
        if (!o->word_regex)
                o->word_regex = diff_word_regex_cfg;
        if (o->word_regex) {
@@ -2976,18 +2980,19 @@ static void show_dirstat(struct diff_options *options)
                }
 
                if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) {
-                       diff_populate_filespec(p->one, 0);
-                       diff_populate_filespec(p->two, 0);
-                       diffcore_count_changes(p->one, p->two, NULL, NULL,
+                       diff_populate_filespec(options->repo, p->one, 0);
+                       diff_populate_filespec(options->repo, p->two, 0);
+                       diffcore_count_changes(options->repo,
+                                              p->one, p->two, NULL, NULL,
                                               &copied, &added);
                        diff_free_filespec_data(p->one);
                        diff_free_filespec_data(p->two);
                } else if (DIFF_FILE_VALID(p->one)) {
-                       diff_populate_filespec(p->one, CHECK_SIZE_ONLY);
+                       diff_populate_filespec(options->repo, p->one, CHECK_SIZE_ONLY);
                        copied = added = 0;
                        diff_free_filespec_data(p->one);
                } else if (DIFF_FILE_VALID(p->two)) {
-                       diff_populate_filespec(p->two, CHECK_SIZE_ONLY);
+                       diff_populate_filespec(options->repo, p->two, CHECK_SIZE_ONLY);
                        copied = 0;
                        added = p->two->size;
                        diff_free_filespec_data(p->two);
@@ -3261,15 +3266,16 @@ static void emit_binary_diff(struct diff_options *o,
        emit_binary_diff_body(o, two, one);
 }
 
-int diff_filespec_is_binary(struct diff_filespec *one)
+int diff_filespec_is_binary(struct repository *r,
+                           struct diff_filespec *one)
 {
        if (one->is_binary == -1) {
-               diff_filespec_load_driver(one);
+               diff_filespec_load_driver(one, r->index);
                if (one->driver->binary != -1)
                        one->is_binary = one->driver->binary;
                else {
                        if (!one->data && DIFF_FILE_VALID(one))
-                               diff_populate_filespec(one, CHECK_BINARY);
+                               diff_populate_filespec(r, one, CHECK_BINARY);
                        if (one->is_binary == -1 && one->data)
                                one->is_binary = buffer_is_binary(one->data,
                                                one->size);
@@ -3280,9 +3286,10 @@ int diff_filespec_is_binary(struct diff_filespec *one)
        return one->is_binary;
 }
 
-static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespec *one)
+static const struct userdiff_funcname *
+diff_funcname_pattern(struct diff_options *o, struct diff_filespec *one)
 {
-       diff_filespec_load_driver(one);
+       diff_filespec_load_driver(one, o->repo->index);
        return one->driver->funcname.pattern ? &one->driver->funcname : NULL;
 }
 
@@ -3294,12 +3301,13 @@ void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const
                options->b_prefix = b;
 }
 
-struct userdiff_driver *get_textconv(struct diff_filespec *one)
+struct userdiff_driver *get_textconv(struct index_state *istate,
+                                    struct diff_filespec *one)
 {
        if (!DIFF_FILE_VALID(one))
                return NULL;
 
-       diff_filespec_load_driver(one);
+       diff_filespec_load_driver(one, istate);
        return userdiff_get_textconv(one->driver);
 }
 
@@ -3349,8 +3357,8 @@ static void builtin_diff(const char *name_a,
        }
 
        if (o->flags.allow_textconv) {
-               textconv_one = get_textconv(one);
-               textconv_two = get_textconv(two);
+               textconv_one = get_textconv(o->repo->index, one);
+               textconv_two = get_textconv(o->repo->index, two);
        }
 
        /* Never use a non-valid filename anywhere if at all possible */
@@ -3391,13 +3399,13 @@ static void builtin_diff(const char *name_a,
                if ((one->mode ^ two->mode) & S_IFMT)
                        goto free_ab_and_return;
                if (complete_rewrite &&
-                   (textconv_one || !diff_filespec_is_binary(one)) &&
-                   (textconv_two || !diff_filespec_is_binary(two))) {
+                   (textconv_one || !diff_filespec_is_binary(o->repo, one)) &&
+                   (textconv_two || !diff_filespec_is_binary(o->repo, two))) {
                        emit_diff_symbol(o, DIFF_SYMBOL_HEADER,
                                         header.buf, header.len, 0);
                        strbuf_reset(&header);
                        emit_rewrite_diff(name_a, name_b, one, two,
-                                               textconv_one, textconv_two, o);
+                                         textconv_one, textconv_two, o);
                        o->found_changes = 1;
                        goto free_ab_and_return;
                }
@@ -3409,8 +3417,8 @@ static void builtin_diff(const char *name_a,
                strbuf_reset(&header);
                goto free_ab_and_return;
        } else if (!o->flags.text &&
-           ( (!textconv_one && diff_filespec_is_binary(one)) ||
-             (!textconv_two && diff_filespec_is_binary(two)) )) {
+                  ( (!textconv_one && diff_filespec_is_binary(o->repo, one)) ||
+                    (!textconv_two && diff_filespec_is_binary(o->repo, two)) )) {
                struct strbuf sb = STRBUF_INIT;
                if (!one->data && !two->data &&
                    S_ISREG(one->mode) && S_ISREG(two->mode) &&
@@ -3431,7 +3439,8 @@ static void builtin_diff(const char *name_a,
                        strbuf_release(&sb);
                        goto free_ab_and_return;
                }
-               if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+               if (fill_mmfile(o->repo, &mf1, one) < 0 ||
+                   fill_mmfile(o->repo, &mf2, two) < 0)
                        die("unable to read files to diff");
                /* Quite common confusing case */
                if (mf1.size == mf2.size &&
@@ -3468,12 +3477,12 @@ static void builtin_diff(const char *name_a,
                        strbuf_reset(&header);
                }
 
-               mf1.size = fill_textconv(textconv_one, one, &mf1.ptr);
-               mf2.size = fill_textconv(textconv_two, two, &mf2.ptr);
+               mf1.size = fill_textconv(o->repo, textconv_one, one, &mf1.ptr);
+               mf2.size = fill_textconv(o->repo, textconv_two, two, &mf2.ptr);
 
-               pe = diff_funcname_pattern(one);
+               pe = diff_funcname_pattern(o, one);
                if (!pe)
-                       pe = diff_funcname_pattern(two);
+                       pe = diff_funcname_pattern(o, two);
 
                memset(&xpp, 0, sizeof(xpp));
                memset(&xecfg, 0, sizeof(xecfg));
@@ -3482,7 +3491,7 @@ static void builtin_diff(const char *name_a,
                        lbl[0] = NULL;
                ecbdata.label_path = lbl;
                ecbdata.color_diff = want_color(o->use_color);
-               ecbdata.ws_rule = whitespace_rule(name_b);
+               ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b);
                if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
                        check_blank_at_eof(&mf1, &mf2, &ecbdata);
                ecbdata.opt = o;
@@ -3582,20 +3591,21 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
 
        same_contents = oideq(&one->oid, &two->oid);
 
-       if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
+       if (diff_filespec_is_binary(o->repo, one) ||
+           diff_filespec_is_binary(o->repo, two)) {
                data->is_binary = 1;
                if (same_contents) {
                        data->added = 0;
                        data->deleted = 0;
                } else {
-                       data->added = diff_filespec_size(two);
-                       data->deleted = diff_filespec_size(one);
+                       data->added = diff_filespec_size(o->repo, two);
+                       data->deleted = diff_filespec_size(o->repo, one);
                }
        }
 
        else if (complete_rewrite) {
-               diff_populate_filespec(one, 0);
-               diff_populate_filespec(two, 0);
+               diff_populate_filespec(o->repo, one, 0);
+               diff_populate_filespec(o->repo, two, 0);
                data->deleted = count_lines(one->data, one->size);
                data->added = count_lines(two->data, two->size);
        }
@@ -3605,7 +3615,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
                xpparam_t xpp;
                xdemitconf_t xecfg;
 
-               if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+               if (fill_mmfile(o->repo, &mf1, one) < 0 ||
+                   fill_mmfile(o->repo, &mf2, two) < 0)
                        die("unable to read files to diff");
 
                memset(&xpp, 0, sizeof(xpp));
@@ -3640,10 +3651,11 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
        data.filename = name_b ? name_b : name_a;
        data.lineno = 0;
        data.o = o;
-       data.ws_rule = whitespace_rule(attr_path);
-       data.conflict_marker_size = ll_merge_marker_size(attr_path);
+       data.ws_rule = whitespace_rule(o->repo->index, attr_path);
+       data.conflict_marker_size = ll_merge_marker_size(o->repo->index, attr_path);
 
-       if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+       if (fill_mmfile(o->repo, &mf1, one) < 0 ||
+           fill_mmfile(o->repo, &mf2, two) < 0)
                die("unable to read files to diff");
 
        /*
@@ -3652,7 +3664,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
         * introduced changes, and as long as the "new" side is text, we
         * can and should check what it introduces.
         */
-       if (diff_filespec_is_binary(two))
+       if (diff_filespec_is_binary(o->repo, two))
                goto free_and_return;
        else {
                /* Crazy xdl interfaces.. */
@@ -3725,7 +3737,10 @@ void fill_filespec(struct diff_filespec *spec, const struct object_id *oid,
  * the work tree has that object contents, return true, so that
  * prepare_temp_file() does not have to inflate and extract.
  */
-static int reuse_worktree_file(const char *name, const struct object_id *oid, int want_file)
+static int reuse_worktree_file(struct index_state *istate,
+                              const char *name,
+                              const struct object_id *oid,
+                              int want_file)
 {
        const struct cache_entry *ce;
        struct stat st;
@@ -3744,7 +3759,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
         * by diff-cache --cached, which does read the cache before
         * calling us.
         */
-       if (!active_cache)
+       if (!istate->cache)
                return 0;
 
        /* We want to avoid the working directory if our caller
@@ -3763,14 +3778,14 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
         * Similarly, if we'd have to convert the file contents anyway, that
         * makes the optimization not worthwhile.
         */
-       if (!want_file && would_convert_to_git(&the_index, name))
+       if (!want_file && would_convert_to_git(istate, name))
                return 0;
 
        len = strlen(name);
-       pos = cache_name_pos(name, len);
+       pos = index_name_pos(istate, name, len);
        if (pos < 0)
                return 0;
-       ce = active_cache[pos];
+       ce = istate->cache[pos];
 
        /*
         * This is not the sha1 we are looking for, or
@@ -3790,7 +3805,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
         * If ce matches the file in the work tree, we can reuse it.
         */
        if (ce_uptodate(ce) ||
-           (!lstat(name, &st) && !ce_match_stat(ce, &st, 0)))
+           (!lstat(name, &st) && !ie_match_stat(istate, ce, &st, 0)))
                return 1;
 
        return 0;
@@ -3823,7 +3838,9 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
  * grab the data for the blob (or file) for our own in-core comparison.
  * diff_filespec has data and size fields for this purpose.
  */
-int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
+int diff_populate_filespec(struct repository *r,
+                          struct diff_filespec *s,
+                          unsigned int flags)
 {
        int size_only = flags & CHECK_SIZE_ONLY;
        int err = 0;
@@ -3850,7 +3867,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
                return diff_populate_gitlink(s, size_only);
 
        if (!s->oid_valid ||
-           reuse_worktree_file(s->path, &s->oid, 0)) {
+           reuse_worktree_file(r->index, s->path, &s->oid, 0)) {
                struct strbuf buf = STRBUF_INIT;
                struct stat st;
                int fd;
@@ -3883,7 +3900,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
                 * point if the path requires us to run the content
                 * conversion.
                 */
-               if (size_only && !would_convert_to_git(&the_index, s->path))
+               if (size_only && !would_convert_to_git(r->index, s->path))
                        return 0;
 
                /*
@@ -3910,7 +3927,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
                /*
                 * Convert from working tree format to canonical git format
                 */
-               if (convert_to_git(&the_index, s->path, s->data, s->size, &buf, conv_flags)) {
+               if (convert_to_git(r->index, s->path, s->data, s->size, &buf, conv_flags)) {
                        size_t size = 0;
                        munmap(s->data, s->size);
                        s->should_munmap = 0;
@@ -3922,8 +3939,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
        else {
                enum object_type type;
                if (size_only || (flags & CHECK_BINARY)) {
-                       type = oid_object_info(the_repository, &s->oid,
-                                              &s->size);
+                       type = oid_object_info(r, &s->oid, &s->size);
                        if (type < 0)
                                die("unable to read %s",
                                    oid_to_hex(&s->oid));
@@ -3961,7 +3977,8 @@ void diff_free_filespec_data(struct diff_filespec *s)
        FREE_AND_NULL(s->cnt_data);
 }
 
-static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
+static void prep_temp_blob(struct index_state *istate,
+                          const char *path, struct diff_tempfile *temp,
                           void *blob,
                           unsigned long size,
                           const struct object_id *oid,
@@ -3979,7 +3996,7 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
        temp->tempfile = mks_tempfile_ts(tempfile.buf, strlen(base) + 1);
        if (!temp->tempfile)
                die_errno("unable to create temp-file");
-       if (convert_to_working_tree(&the_index, path,
+       if (convert_to_working_tree(istate, path,
                        (const char *)blob, (size_t)size, &buf)) {
                blob = buf.buf;
                size = buf.len;
@@ -3995,8 +4012,9 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
        free(path_dup);
 }
 
-static struct diff_tempfile *prepare_temp_file(const char *name,
-               struct diff_filespec *one)
+static struct diff_tempfile *prepare_temp_file(struct repository *r,
+                                              const char *name,
+                                              struct diff_filespec *one)
 {
        struct diff_tempfile *temp = claim_diff_tempfile();
 
@@ -4013,7 +4031,7 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
 
        if (!S_ISGITLINK(one->mode) &&
            (!one->oid_valid ||
-            reuse_worktree_file(name, &one->oid, 1))) {
+            reuse_worktree_file(r->index, name, &one->oid, 1))) {
                struct stat st;
                if (lstat(name, &st) < 0) {
                        if (errno == ENOENT)
@@ -4024,7 +4042,7 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
                        struct strbuf sb = STRBUF_INIT;
                        if (strbuf_readlink(&sb, name, st.st_size) < 0)
                                die_errno("readlink(%s)", name);
-                       prep_temp_blob(name, temp, sb.buf, sb.len,
+                       prep_temp_blob(r->index, name, temp, sb.buf, sb.len,
                                       (one->oid_valid ?
                                        &one->oid : &null_oid),
                                       (one->oid_valid ?
@@ -4049,19 +4067,21 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
                return temp;
        }
        else {
-               if (diff_populate_filespec(one, 0))
+               if (diff_populate_filespec(r, one, 0))
                        die("cannot read data blob for %s", one->path);
-               prep_temp_blob(name, temp, one->data, one->size,
+               prep_temp_blob(r->index, name, temp,
+                              one->data, one->size,
                               &one->oid, one->mode);
        }
        return temp;
 }
 
-static void add_external_diff_name(struct argv_array *argv,
+static void add_external_diff_name(struct repository *r,
+                                  struct argv_array *argv,
                                   const char *name,
                                   struct diff_filespec *df)
 {
-       struct diff_tempfile *temp = prepare_temp_file(name, df);
+       struct diff_tempfile *temp = prepare_temp_file(r, name, df);
        argv_array_push(argv, temp->name);
        argv_array_push(argv, temp->hex);
        argv_array_push(argv, temp->mode);
@@ -4090,11 +4110,11 @@ static void run_external_diff(const char *pgm,
        argv_array_push(&argv, name);
 
        if (one && two) {
-               add_external_diff_name(&argv, name, one);
+               add_external_diff_name(o->repo, &argv, name, one);
                if (!other)
-                       add_external_diff_name(&argv, name, two);
+                       add_external_diff_name(o->repo, &argv, name, two);
                else {
-                       add_external_diff_name(&argv, other, two);
+                       add_external_diff_name(o->repo, &argv, other, two);
                        argv_array_push(&argv, other);
                        argv_array_push(&argv, xfrm_msg);
                }
@@ -4187,8 +4207,10 @@ static void fill_metainfo(struct strbuf *msg,
 
                if (o->flags.binary) {
                        mmfile_t mf;
-                       if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
-                           (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
+                       if ((!fill_mmfile(o->repo, &mf, one) &&
+                            diff_filespec_is_binary(o->repo, one)) ||
+                           (!fill_mmfile(o->repo, &mf, two) &&
+                            diff_filespec_is_binary(o->repo, two)))
                                abbrev = hexsz;
                }
                strbuf_addf(msg, "%s%sindex %s..%s", line_prefix, set,
@@ -4216,7 +4238,9 @@ static void run_diff_cmd(const char *pgm,
 
 
        if (o->flags.allow_external) {
-               struct userdiff_driver *drv = userdiff_find_by_path(attr_path);
+               struct userdiff_driver *drv;
+
+               drv = userdiff_find_by_path(o->repo->index, attr_path);
                if (drv && drv->external)
                        pgm = drv->external;
        }
@@ -4245,7 +4269,7 @@ static void run_diff_cmd(const char *pgm,
                fprintf(o->file, "* Unmerged path %s\n", name);
 }
 
-static void diff_fill_oid_info(struct diff_filespec *one)
+static void diff_fill_oid_info(struct diff_filespec *one, struct index_state *istate)
 {
        if (DIFF_FILE_VALID(one)) {
                if (!one->oid_valid) {
@@ -4256,7 +4280,7 @@ static void diff_fill_oid_info(struct diff_filespec *one)
                        }
                        if (lstat(one->path, &st) < 0)
                                die_errno("stat '%s'", one->path);
-                       if (index_path(&one->oid, one->path, &st, 0))
+                       if (index_path(istate, &one->oid, one->path, &st, 0))
                                die("cannot hash %s", one->path);
                }
        }
@@ -4304,8 +4328,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
                return;
        }
 
-       diff_fill_oid_info(one);
-       diff_fill_oid_info(two);
+       diff_fill_oid_info(one, o->repo->index);
+       diff_fill_oid_info(two, o->repo->index);
 
        if (!pgm &&
            DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) &&
@@ -4316,7 +4340,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
                 */
                struct diff_filespec *null = alloc_filespec(two->path);
                run_diff_cmd(NULL, name, other, attr_path,
-                            one, null, &msg, o, p);
+                            one, null, &msg,
+                            o, p);
                free(null);
                strbuf_release(&msg);
 
@@ -4340,7 +4365,8 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
 
        if (DIFF_PAIR_UNMERGED(p)) {
                /* unmerged */
-               builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p);
+               builtin_diffstat(p->one->path, NULL, NULL, NULL,
+                                diffstat, o, p);
                return;
        }
 
@@ -4350,10 +4376,11 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
        if (o->prefix_length)
                strip_prefix(o->prefix_length, &name, &other);
 
-       diff_fill_oid_info(p->one);
-       diff_fill_oid_info(p->two);
+       diff_fill_oid_info(p->one, o->repo->index);
+       diff_fill_oid_info(p->two, o->repo->index);
 
-       builtin_diffstat(name, other, p->one, p->two, diffstat, o, p);
+       builtin_diffstat(name, other, p->one, p->two,
+                        diffstat, o, p);
 }
 
 static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
@@ -4374,17 +4401,18 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
        if (o->prefix_length)
                strip_prefix(o->prefix_length, &name, &other);
 
-       diff_fill_oid_info(p->one);
-       diff_fill_oid_info(p->two);
+       diff_fill_oid_info(p->one, o->repo->index);
+       diff_fill_oid_info(p->two, o->repo->index);
 
        builtin_checkdiff(name, other, attr_path, p->one, p->two, o);
 }
 
-void diff_setup(struct diff_options *options)
+void repo_diff_setup(struct repository *r, struct diff_options *options)
 {
        memcpy(options, &default_diff_options, sizeof(*options));
 
        options->file = stdout;
+       options->repo = r;
 
        options->output_indicators[OUTPUT_INDICATOR_NEW] = '+';
        options->output_indicators[OUTPUT_INDICATOR_OLD] = '-';
@@ -5683,8 +5711,8 @@ static int diff_get_patch_id(struct diff_options *options, struct object_id *oid
                if (DIFF_PAIR_UNMERGED(p))
                        continue;
 
-               diff_fill_oid_info(p->one);
-               diff_fill_oid_info(p->two);
+               diff_fill_oid_info(p->one, options->repo->index);
+               diff_fill_oid_info(p->two, options->repo->index);
 
                len1 = remove_space(p->one->path, strlen(p->one->path));
                len2 = remove_space(p->two->path, strlen(p->two->path));
@@ -5716,12 +5744,12 @@ static int diff_get_patch_id(struct diff_options *options, struct object_id *oid
                if (diff_header_only)
                        continue;
 
-               if (fill_mmfile(&mf1, p->one) < 0 ||
-                   fill_mmfile(&mf2, p->two) < 0)
+               if (fill_mmfile(options->repo, &mf1, p->one) < 0 ||
+                   fill_mmfile(options->repo, &mf2, p->two) < 0)
                        return error("unable to read files to diff");
 
-               if (diff_filespec_is_binary(p->one) ||
-                   diff_filespec_is_binary(p->two)) {
+               if (diff_filespec_is_binary(options->repo, p->one) ||
+                   diff_filespec_is_binary(options->repo, p->two)) {
                        git_SHA1_Update(&ctx, oid_to_hex(&p->one->oid),
                                        GIT_SHA1_HEXSZ);
                        git_SHA1_Update(&ctx, oid_to_hex(&p->two->oid),
@@ -6024,19 +6052,21 @@ static void diffcore_apply_filter(struct diff_options *options)
 }
 
 /* Check whether two filespecs with the same mode and size are identical */
-static int diff_filespec_is_identical(struct diff_filespec *one,
+static int diff_filespec_is_identical(struct repository *r,
+                                     struct diff_filespec *one,
                                      struct diff_filespec *two)
 {
        if (S_ISGITLINK(one->mode))
                return 0;
-       if (diff_populate_filespec(one, 0))
+       if (diff_populate_filespec(r, one, 0))
                return 0;
-       if (diff_populate_filespec(two, 0))
+       if (diff_populate_filespec(r, two, 0))
                return 0;
        return !memcmp(one->data, two->data, one->size);
 }
 
-static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
+static int diff_filespec_check_stat_unmatch(struct repository *r,
+                                           struct diff_filepair *p)
 {
        if (p->done_skip_stat_unmatch)
                return p->skip_stat_unmatch_result;
@@ -6060,10 +6090,10 @@ static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
            !DIFF_FILE_VALID(p->two) ||
            (p->one->oid_valid && p->two->oid_valid) ||
            (p->one->mode != p->two->mode) ||
-           diff_populate_filespec(p->one, CHECK_SIZE_ONLY) ||
-           diff_populate_filespec(p->two, CHECK_SIZE_ONLY) ||
+           diff_populate_filespec(r, p->one, CHECK_SIZE_ONLY) ||
+           diff_populate_filespec(r, p->two, CHECK_SIZE_ONLY) ||
            (p->one->size != p->two->size) ||
-           !diff_filespec_is_identical(p->one, p->two)) /* (2) */
+           !diff_filespec_is_identical(r, p->one, p->two)) /* (2) */
                p->skip_stat_unmatch_result = 1;
        return p->skip_stat_unmatch_result;
 }
@@ -6078,7 +6108,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
        for (i = 0; i < q->nr; i++) {
                struct diff_filepair *p = q->queue[i];
 
-               if (diff_filespec_check_stat_unmatch(p))
+               if (diff_filespec_check_stat_unmatch(diffopt->repo, p))
                        diff_q(&outq, p);
                else {
                        /*
@@ -6120,7 +6150,8 @@ void diffcore_std(struct diff_options *options)
        if (!options->found_follow) {
                /* See try_to_follow_renames() in tree-diff.c */
                if (options->break_opt != -1)
-                       diffcore_break(options->break_opt);
+                       diffcore_break(options->repo,
+                                      options->break_opt);
                if (options->detect_rename)
                        diffcore_rename(options);
                if (options->break_opt != -1)
@@ -6271,7 +6302,7 @@ void diff_change(struct diff_options *options,
                return;
 
        if (options->flags.quick && options->skip_stat_unmatch &&
-           !diff_filespec_check_stat_unmatch(p))
+           !diff_filespec_check_stat_unmatch(options->repo, p))
                return;
 
        options->flags.has_changes = 1;
@@ -6293,8 +6324,10 @@ struct diff_filepair *diff_unmerge(struct diff_options *options, const char *pat
        return pair;
 }
 
-static char *run_textconv(const char *pgm, struct diff_filespec *spec,
-               size_t *outsize)
+static char *run_textconv(struct repository *r,
+                         const char *pgm,
+                         struct diff_filespec *spec,
+                         size_t *outsize)
 {
        struct diff_tempfile *temp;
        const char *argv[3];
@@ -6303,7 +6336,7 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
        struct strbuf buf = STRBUF_INIT;
        int err = 0;
 
-       temp = prepare_temp_file(spec->path, spec);
+       temp = prepare_temp_file(r, spec->path, spec);
        *arg++ = pgm;
        *arg++ = temp->name;
        *arg = NULL;
@@ -6330,7 +6363,8 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
        return strbuf_detach(&buf, outsize);
 }
 
-size_t fill_textconv(struct userdiff_driver *driver,
+size_t fill_textconv(struct repository *r,
+                    struct userdiff_driver *driver,
                     struct diff_filespec *df,
                     char **outbuf)
 {
@@ -6341,7 +6375,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
                        *outbuf = "";
                        return 0;
                }
-               if (diff_populate_filespec(df, 0))
+               if (diff_populate_filespec(r, df, 0))
                        die("unable to read files to diff");
                *outbuf = df->data;
                return df->size;
@@ -6358,7 +6392,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
                        return size;
        }
 
-       *outbuf = run_textconv(driver->textconv, df, &size);
+       *outbuf = run_textconv(r, driver->textconv, df, &size);
        if (!*outbuf)
                die("unable to read files to diff");
 
@@ -6378,7 +6412,8 @@ size_t fill_textconv(struct userdiff_driver *driver,
        return size;
 }
 
-int textconv_object(const char *path,
+int textconv_object(struct repository *r,
+                   const char *path,
                    unsigned mode,
                    const struct object_id *oid,
                    int oid_valid,
@@ -6390,13 +6425,13 @@ int textconv_object(const char *path,
 
        df = alloc_filespec(path);
        fill_filespec(df, oid, oid_valid, mode);
-       textconv = get_textconv(df);
+       textconv = get_textconv(r->index, df);
        if (!textconv) {
                free_filespec(df);
                return 0;
        }
 
-       *buf_size = fill_textconv(textconv, df, buf);
+       *buf_size = fill_textconv(r, textconv, df, buf);
        free_filespec(df);
        return 1;
 }