Make loose object file reading more careful
[gitweb.git] / builtin-commit.c
index 256181a68bd991278fda4ecb48911d03b5f23141..90200ed643bcf21f28a66396f0d15db920a5d4c8 100644 (file)
@@ -47,6 +47,7 @@ static enum {
 
 static char *logfile, *force_author, *template_file;
 static char *edit_message, *use_message;
+static char *author_name, *author_email, *author_date;
 static int all, edit_flag, also, interactive, only, amend, signoff;
 static int quiet, verbose, untracked_files, no_verify, allow_empty;
 /*
@@ -101,7 +102,7 @@ static struct option builtin_commit_options[] = {
        OPT_BOOLEAN('o', "only", &only, "commit only specified files"),
        OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
        OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
-       OPT_BOOLEAN(0, "untracked-files", &untracked_files, "show all untracked files"),
+       OPT_BOOLEAN('u', "untracked-files", &untracked_files, "show all untracked files"),
        OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),
        OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"),
 
@@ -175,10 +176,13 @@ static void add_remove_files(struct path_list *list)
 {
        int i;
        for (i = 0; i < list->nr; i++) {
+               struct stat st;
                struct path_list_item *p = &(list->items[i]);
-               if (file_exists(p->path))
-                       add_file_to_cache(p->path, 0);
-               else
+
+               if (!lstat(p->path, &st)) {
+                       if (add_to_cache(p->path, &st, 0))
+                               die("updating files failed");
+               } else
                        remove_file_from_cache(p->path);
        }
 }
@@ -219,6 +223,8 @@ static char *prepare_index(int argc, const char **argv, const char *prefix)
 
        if (interactive) {
                interactive_add(argc, argv, prefix);
+               if (read_cache() < 0)
+                       die("index file corrupt");
                commit_style = COMMIT_AS_IS;
                return get_index_file();
        }
@@ -243,7 +249,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix)
         */
        if (all || (also && pathspec && *pathspec)) {
                int fd = hold_locked_index(&index_lock, 1);
-               add_files_to_cache(0, also ? prefix : NULL, pathspec);
+               add_files_to_cache(also ? prefix : NULL, pathspec, 0);
                refresh_cache(REFRESH_QUIET);
                if (write_cache(fd, active_cache, active_nr) ||
                    close_lock_file(&index_lock))
@@ -395,6 +401,47 @@ static int is_a_merge(const unsigned char *sha1)
 
 static const char sign_off_header[] = "Signed-off-by: ";
 
+static void determine_author_info(void)
+{
+       char *name, *email, *date;
+
+       name = getenv("GIT_AUTHOR_NAME");
+       email = getenv("GIT_AUTHOR_EMAIL");
+       date = getenv("GIT_AUTHOR_DATE");
+
+       if (use_message) {
+               const char *a, *lb, *rb, *eol;
+
+               a = strstr(use_message_buffer, "\nauthor ");
+               if (!a)
+                       die("invalid commit: %s", use_message);
+
+               lb = strstr(a + 8, " <");
+               rb = strstr(a + 8, "> ");
+               eol = strchr(a + 8, '\n');
+               if (!lb || !rb || !eol)
+                       die("invalid commit: %s", use_message);
+
+               name = xstrndup(a + 8, lb - (a + 8));
+               email = xstrndup(lb + 2, rb - (lb + 2));
+               date = xstrndup(rb + 2, eol - (rb + 2));
+       }
+
+       if (force_author) {
+               const char *lb = strstr(force_author, " <");
+               const char *rb = strchr(force_author, '>');
+
+               if (!lb || !rb)
+                       die("malformed --author parameter");
+               name = xstrndup(force_author, lb - force_author);
+               email = xstrndup(lb + 2, rb - (lb + 2));
+       }
+
+       author_name = name;
+       author_email = email;
+       author_date = date;
+}
+
 static int prepare_to_commit(const char *index_file, const char *prefix)
 {
        struct stat statbuf;
@@ -404,6 +451,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
        FILE *fp;
        const char *hook_arg1 = NULL;
        const char *hook_arg2 = NULL;
+       int ident_shown = 0;
 
        if (!no_verify && run_hook(index_file, "pre-commit", NULL))
                return 0;
@@ -483,7 +531,14 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
 
        strbuf_release(&sb);
 
+       determine_author_info();
+
+       /* This checks if committer ident is explicitly given */
+       git_committer_info(0);
        if (use_editor) {
+               char *author_ident;
+               const char *committer_ident;
+
                if (in_merge)
                        fprintf(fp,
                                "#\n"
@@ -506,6 +561,27 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
                if (only_include_assumed)
                        fprintf(fp, "# %s\n", only_include_assumed);
 
+               author_ident = xstrdup(fmt_name(author_name, author_email));
+               committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
+                                          getenv("GIT_COMMITTER_EMAIL"));
+               if (strcmp(author_ident, committer_ident))
+                       fprintf(fp,
+                               "%s"
+                               "# Author:    %s\n",
+                               ident_shown++ ? "" : "#\n",
+                               author_ident);
+               free(author_ident);
+
+               if (!user_ident_explicitly_given)
+                       fprintf(fp,
+                               "%s"
+                               "# Committer: %s\n",
+                               ident_shown++ ? "" : "#\n",
+                               committer_ident);
+
+               if (ident_shown)
+                       fprintf(fp, "#\n");
+
                saved_color_setting = wt_status_use_color;
                wt_status_use_color = 0;
                commitable = run_status(fp, index_file, prefix, 1);
@@ -622,45 +698,6 @@ static int message_is_empty(struct strbuf *sb, int start)
        return 1;
 }
 
-static void determine_author_info(struct strbuf *sb)
-{
-       char *name, *email, *date;
-
-       name = getenv("GIT_AUTHOR_NAME");
-       email = getenv("GIT_AUTHOR_EMAIL");
-       date = getenv("GIT_AUTHOR_DATE");
-
-       if (use_message) {
-               const char *a, *lb, *rb, *eol;
-
-               a = strstr(use_message_buffer, "\nauthor ");
-               if (!a)
-                       die("invalid commit: %s", use_message);
-
-               lb = strstr(a + 8, " <");
-               rb = strstr(a + 8, "> ");
-               eol = strchr(a + 8, '\n');
-               if (!lb || !rb || !eol)
-                       die("invalid commit: %s", use_message);
-
-               name = xstrndup(a + 8, lb - (a + 8));
-               email = xstrndup(lb + 2, rb - (lb + 2));
-               date = xstrndup(rb + 2, eol - (rb + 2));
-       }
-
-       if (force_author) {
-               const char *lb = strstr(force_author, " <");
-               const char *rb = strchr(force_author, '>');
-
-               if (!lb || !rb)
-                       die("malformed --author parameter");
-               name = xstrndup(force_author, lb - force_author);
-               email = xstrndup(lb + 2, rb - (lb + 2));
-       }
-
-       strbuf_addf(sb, "author %s\n", fmt_ident(name, email, date, IDENT_ERROR_ON_NO_NAME));
-}
-
 static int parse_and_validate_options(int argc, const char *argv[],
                                      const char * const usage[])
 {
@@ -771,7 +808,7 @@ int cmd_status(int argc, const char **argv, const char *prefix)
        const char *index_file;
        int commitable;
 
-       git_config(git_status_config);
+       git_config(git_status_config, NULL);
 
        if (wt_status_use_color == -1)
                wt_status_use_color = git_use_color_default;
@@ -825,7 +862,7 @@ static void print_summary(const char *prefix, const unsigned char *sha1)
        }
 }
 
-int git_commit_config(const char *k, const char *v)
+int git_commit_config(const char *k, const char *v, void *cb)
 {
        if (!strcmp(k, "commit.template")) {
                if (!v)
@@ -834,7 +871,7 @@ int git_commit_config(const char *k, const char *v)
                return 0;
        }
 
-       return git_status_config(k, v);
+       return git_status_config(k, v, cb);
 }
 
 static const char commit_utf8_warn[] =
@@ -846,10 +883,19 @@ static void add_parent(struct strbuf *sb, const unsigned char *sha1)
 {
        struct object *obj = parse_object(sha1);
        const char *parent = sha1_to_hex(sha1);
+       const char *cp;
+
        if (!obj)
                die("Unable to find commit parent %s", parent);
        if (obj->type != OBJ_COMMIT)
                die("Parent %s isn't a proper commit", parent);
+
+       for (cp = sb->buf; cp && (cp = strstr(cp, "\nparent ")); cp += 8) {
+               if (!memcmp(cp + 8, parent, 40) && cp[48] == '\n') {
+                       error("duplicate parent %s ignored", parent);
+                       return;
+               }
+       }
        strbuf_addf(sb, "parent %s\n", parent);
 }
 
@@ -862,7 +908,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
        unsigned char commit_sha1[20];
        struct ref_lock *ref_lock;
 
-       git_config(git_commit_config);
+       git_config(git_commit_config, NULL);
 
        argc = parse_and_validate_options(argc, argv, builtin_commit_usage);
 
@@ -920,7 +966,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                strbuf_addf(&sb, "parent %s\n", sha1_to_hex(head_sha1));
        }
 
-       determine_author_info(&sb);
+       strbuf_addf(&sb, "author %s\n",
+                   fmt_ident(author_name, author_email, author_date, IDENT_ERROR_ON_NO_NAME));
        strbuf_addf(&sb, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
        if (!is_encoding_utf8(git_commit_encoding))
                strbuf_addf(&sb, "encoding %s\n", git_commit_encoding);