Merge branch 'ds/checkout-upper'

[git.git] / builtin-blame.c

diff --git a/builtin-blame.c b/builtin-blame.c
index 0519339098f3258ae6cc2b50d30679a8cfc7f2c7..c158d319dce78c6b1f0cfeffd91ee565a2d14eff 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -98,6 +98,10 @@ static char *fill_origin_blob(struct origin *o, mmfile_t *file)
                num_read_blob++;
                file->ptr = read_sha1_file(o->blob_sha1, &type,
                                           (unsigned long *)(&(file->size)));
+               if (!file->ptr)
+                       die("Cannot read blob %s for path %s",
+                           sha1_to_hex(o->blob_sha1),
+                           o->path);
                o->file = *file;
        }
        else
@@ -331,7 +335,7 @@ static struct origin *find_origin(struct scoreboard *sb,
         * same and diff-tree is fairly efficient about this.
         */
        diff_setup(&diff_opts);
-       diff_opts.recursive = 1;
+       DIFF_OPT_SET(&diff_opts, RECURSIVE);
        diff_opts.detect_rename = 0;
        diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
        paths[0] = origin->path;
@@ -405,7 +409,7 @@ static struct origin *find_rename(struct scoreboard *sb,
        const char *paths[2];
 
        diff_setup(&diff_opts);
-       diff_opts.recursive = 1;
+       DIFF_OPT_SET(&diff_opts, RECURSIVE);
        diff_opts.detect_rename = DIFF_DETECT_RENAME;
        diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
        diff_opts.single_follow = origin->path;
@@ -1071,7 +1075,7 @@ static int find_copy_in_parent(struct scoreboard *sb,
                return 1; /* nothing remains for this target */
 
        diff_setup(&diff_opts);
-       diff_opts.recursive = 1;
+       DIFF_OPT_SET(&diff_opts, RECURSIVE);
        diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
 
        paths[0] = NULL;
@@ -1089,7 +1093,7 @@ static int find_copy_in_parent(struct scoreboard *sb,
        if ((opt & PICKAXE_BLAME_COPY_HARDEST)
            || ((opt & PICKAXE_BLAME_COPY_HARDER)
                && (!porigin || strcmp(target->path, porigin->path))))
-               diff_opts.find_copies_harder = 1;
+               DIFF_OPT_SET(&diff_opts, FIND_COPIES_HARDER);
 
        if (is_null_sha1(target->commit->object.sha1))
                do_diff_cache(parent->tree->object.sha1, &diff_opts);
@@ -1098,7 +1102,7 @@ static int find_copy_in_parent(struct scoreboard *sb,
                               target->commit->tree->object.sha1,
                               "", &diff_opts);
 
-       if (!diff_opts.find_copies_harder)
+       if (!DIFF_OPT_TST(&diff_opts, FIND_COPIES_HARDER))
                diffcore_std(&diff_opts);
 
        retval = 0;
@@ -1384,6 +1388,9 @@ static void get_commit_info(struct commit *commit,
                unsigned long size;
                commit->buffer =
                        read_sha1_file(commit->object.sha1, &type, &size);
+               if (!commit->buffer)
+                       die("Cannot read commit %s",
+                           sha1_to_hex(commit->object.sha1));
        }
        ret->author = author_buf;
        get_ac_line(commit->buffer, "\nauthor ",
@@ -1423,8 +1430,7 @@ static void get_commit_info(struct commit *commit,
 static void write_filename_info(const char *path)
 {
        printf("filename ");
-       write_name_quoted(NULL, 0, path, 1, stdout);
-       putchar('\n');
+       write_name_quoted(path, stdout, '\n');
 }
 
 /*
@@ -1994,11 +2000,9 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
        struct commit *commit;
        struct origin *origin;
        unsigned char head_sha1[20];
-       char *buf;
+       struct strbuf buf;
        const char *ident;
-       int fd;
        time_t now;
-       unsigned long fin_size;
        int size, len;
        struct cache_entry *ce;
        unsigned mode;
@@ -2016,9 +2020,11 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
 
        origin = make_origin(commit, path);
 
+       strbuf_init(&buf, 0);
        if (!contents_from || strcmp("-", contents_from)) {
                struct stat st;
                const char *read_from;
+               unsigned long fin_size;
 
                if (contents_from) {
                        if (stat(contents_from, &st) < 0)
@@ -2031,19 +2037,16 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
                        read_from = path;
                }
                fin_size = xsize_t(st.st_size);
-               buf = xmalloc(fin_size+1);
                mode = canon_mode(st.st_mode);
                switch (st.st_mode & S_IFMT) {
                case S_IFREG:
-                       fd = open(read_from, O_RDONLY);
-                       if (fd < 0)
-                               die("cannot open %s", read_from);
-                       if (read_in_full(fd, buf, fin_size) != fin_size)
-                               die("cannot read %s", read_from);
+                       if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
+                               die("cannot open or read %s", read_from);
                        break;
                case S_IFLNK:
-                       if (readlink(read_from, buf, fin_size+1) != fin_size)
+                       if (readlink(read_from, buf.buf, buf.alloc) != fin_size)
                                die("cannot readlink %s", read_from);
+                       buf.len = fin_size;
                        break;
                default:
                        die("unsupported file type %s", read_from);
@@ -2052,26 +2055,14 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
        else {
                /* Reading from stdin */
                contents_from = "standard input";
-               buf = NULL;
-               fin_size = 0;
                mode = 0;
-               while (1) {
-                       ssize_t cnt = 8192;
-                       buf = xrealloc(buf, fin_size + cnt);
-                       cnt = xread(0, buf + fin_size, cnt);
-                       if (cnt < 0)
-                               die("read error %s from stdin",
-                                   strerror(errno));
-                       if (!cnt)
-                               break;
-                       fin_size += cnt;
-               }
-               buf = xrealloc(buf, fin_size + 1);
+               if (strbuf_read(&buf, 0, 0) < 0)
+                       die("read error %s from stdin", strerror(errno));
        }
-       buf[fin_size] = 0;
-       origin->file.ptr = buf;
-       origin->file.size = fin_size;
-       pretend_sha1_file(buf, fin_size, OBJ_BLOB, origin->blob_sha1);
+       convert_to_git(path, buf.buf, buf.len, &buf);
+       origin->file.ptr = buf.buf;
+       origin->file.size = buf.len;
+       pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_sha1);
        commit->util = origin;
 
        /*
@@ -2224,9 +2215,6 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                        argv[unk++] = arg;
        }
 
-       if (!incremental)
-               setup_pager();
-
        if (!blame_move_score)
                blame_move_score = BLAME_DEFAULT_MOVE_SCORE;
        if (!blame_copy_score)
@@ -2307,6 +2295,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                        else if (i != argc - 1)
                                usage(blame_usage); /* garbage at end */
 
+                       setup_work_tree();
                        if (!has_path_in_work_tree(path))
                                die("cannot stat path %s: %s",
                                    path, strerror(errno));
@@ -2354,6 +2343,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                 * do not default to HEAD, but use the working tree
                 * or "--contents".
                 */
+               setup_work_tree();
                sb.final = fake_working_tree_commit(path, contents_from);
                add_pending_object(&revs, &(sb.final->object), ":");
        }
@@ -2382,6 +2372,10 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 
                sb.final_buf = read_sha1_file(o->blob_sha1, &type,
                                              &sb.final_buf_size);
+               if (!sb.final_buf)
+                       die("Cannot read blob %s for path %s",
+                           sha1_to_hex(o->blob_sha1),
+                           path);
        }
        num_read_blob++;
        lno = prepare_lines(&sb);
@@ -2416,6 +2410,9 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 
        read_mailmap(&mailmap, ".mailmap", NULL);
 
+       if (!incremental)
+               setup_pager();
+
        assign_blame(&sb, &revs, opt);
 
        if (incremental)