Use xmalloc instead of malloc
[gitweb.git] / git.c
diff --git a/git.c b/git.c
index d031eb9a1868befaa546e230579152b35591054e..05871ad42c8c20999e2dd977ea6033f38614e862 100644 (file)
--- a/git.c
+++ b/git.c
@@ -15,6 +15,9 @@
 
 #include "builtin.h"
 
+const char git_usage_string[] =
+       "git [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ ARGS ]";
+
 static void prepend_to_path(const char *dir, int len)
 {
        const char *old_path = getenv("PATH");
@@ -26,7 +29,7 @@ static void prepend_to_path(const char *dir, int len)
 
        path_len = len + strlen(old_path) + 1;
 
-       path = malloc(path_len + 1);
+       path = xmalloc(path_len + 1);
 
        memcpy(path, dir, len);
        path[len] = ':';
@@ -78,7 +81,7 @@ static int handle_options(const char*** argv, int* argc)
                        setenv("GIT_DIR", getcwd(git_dir, 1024), 1);
                } else {
                        fprintf(stderr, "Unknown option: %s\n", cmd);
-                       cmd_usage(0, NULL, NULL);
+                       usage(git_usage_string);
                }
 
                (*argv)++;
@@ -89,7 +92,7 @@ static int handle_options(const char*** argv, int* argc)
 }
 
 static const char *alias_command;
-static char *alias_string = NULL;
+static char *alias_string;
 
 static int git_alias_config(const char *var, const char *value)
 {
@@ -117,7 +120,7 @@ static int split_cmdline(char *cmdline, const char ***argv)
                                ; /* skip */
                        if (count >= size) {
                                size += 16;
-                               *argv = realloc(*argv, sizeof(char*) * size);
+                               *argv = xrealloc(*argv, sizeof(char*) * size);
                        }
                        (*argv)[count++] = cmdline + dst;
                } else if(!quoted && (c == '\'' || c == '"')) {
@@ -188,8 +191,8 @@ static int handle_alias(int *argcp, const char ***argv)
                        fflush(stderr);
                }
 
-               new_argv = realloc(new_argv, sizeof(char*) *
-                                  (count + *argcp + 1));
+               new_argv = xrealloc(new_argv, sizeof(char*) *
+                                   (count + *argcp + 1));
                /* insert after command name */
                memcpy(new_argv + count, *argv + 1, sizeof(char*) * *argcp);
                new_argv[count+*argcp] = NULL;
@@ -210,8 +213,8 @@ static int handle_alias(int *argcp, const char ***argv)
 
 const char git_version_string[] = GIT_VERSION;
 
-#define NEEDS_PREFIX 1
-#define USE_PAGER 2
+#define RUN_SETUP      (1<<0)
+#define USE_PAGER      (1<<1)
 
 static void handle_internal_command(int argc, const char **argv, char **envp)
 {
@@ -221,45 +224,54 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                int (*fn)(int, const char **, const char *);
                int option;
        } commands[] = {
-               { "version", cmd_version },
-               { "help", cmd_help },
-               { "log", cmd_log, NEEDS_PREFIX | USE_PAGER },
-               { "whatchanged", cmd_whatchanged, NEEDS_PREFIX | USE_PAGER },
-               { "show", cmd_show, NEEDS_PREFIX | USE_PAGER },
-               { "push", cmd_push },
-               { "format-patch", cmd_format_patch, NEEDS_PREFIX },
+               { "add", cmd_add, RUN_SETUP },
+               { "apply", cmd_apply },
+               { "cat-file", cmd_cat_file, RUN_SETUP },
+               { "checkout-index", cmd_checkout_index, RUN_SETUP },
+               { "check-ref-format", cmd_check_ref_format },
+               { "commit-tree", cmd_commit_tree, RUN_SETUP },
                { "count-objects", cmd_count_objects },
-               { "diff", cmd_diff, NEEDS_PREFIX },
-               { "grep", cmd_grep, NEEDS_PREFIX },
-               { "rm", cmd_rm, NEEDS_PREFIX },
-               { "add", cmd_add, NEEDS_PREFIX },
-               { "rev-list", cmd_rev_list, NEEDS_PREFIX },
-               { "init-db", cmd_init_db },
+               { "diff", cmd_diff, RUN_SETUP },
+               { "diff-files", cmd_diff_files, RUN_SETUP },
+               { "diff-index", cmd_diff_index, RUN_SETUP },
+               { "diff-stages", cmd_diff_stages, RUN_SETUP },
+               { "diff-tree", cmd_diff_tree, RUN_SETUP },
+               { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
+               { "format-patch", cmd_format_patch, RUN_SETUP },
                { "get-tar-commit-id", cmd_get_tar_commit_id },
-               { "upload-tar", cmd_upload_tar },
-               { "check-ref-format", cmd_check_ref_format },
-               { "ls-files", cmd_ls_files, NEEDS_PREFIX },
-               { "ls-tree", cmd_ls_tree, NEEDS_PREFIX },
-               { "tar-tree", cmd_tar_tree, NEEDS_PREFIX },
-               { "read-tree", cmd_read_tree, NEEDS_PREFIX },
-               { "commit-tree", cmd_commit_tree, NEEDS_PREFIX },
-               { "apply", cmd_apply },
-               { "show-branch", cmd_show_branch, NEEDS_PREFIX },
-               { "diff-files", cmd_diff_files, NEEDS_PREFIX },
-               { "diff-index", cmd_diff_index, NEEDS_PREFIX },
-               { "diff-stages", cmd_diff_stages, NEEDS_PREFIX },
-               { "diff-tree", cmd_diff_tree, NEEDS_PREFIX },
-               { "cat-file", cmd_cat_file, NEEDS_PREFIX },
-               { "rev-parse", cmd_rev_parse, NEEDS_PREFIX },
-               { "write-tree", cmd_write_tree, NEEDS_PREFIX },
-               { "mailsplit", cmd_mailsplit },
+               { "grep", cmd_grep, RUN_SETUP },
+               { "help", cmd_help },
+               { "init-db", cmd_init_db },
+               { "log", cmd_log, RUN_SETUP | USE_PAGER },
+               { "ls-files", cmd_ls_files, RUN_SETUP },
+               { "ls-tree", cmd_ls_tree, RUN_SETUP },
                { "mailinfo", cmd_mailinfo },
+               { "mailsplit", cmd_mailsplit },
+               { "mv", cmd_mv, RUN_SETUP },
+               { "name-rev", cmd_name_rev, RUN_SETUP },
+               { "pack-objects", cmd_pack_objects, RUN_SETUP },
+               { "prune", cmd_prune, RUN_SETUP },
+               { "prune-packed", cmd_prune_packed, RUN_SETUP },
+               { "push", cmd_push, RUN_SETUP },
+               { "read-tree", cmd_read_tree, RUN_SETUP },
+               { "repo-config", cmd_repo_config },
+               { "rev-list", cmd_rev_list, RUN_SETUP },
+               { "rev-parse", cmd_rev_parse, RUN_SETUP },
+               { "rm", cmd_rm, RUN_SETUP },
+               { "show-branch", cmd_show_branch, RUN_SETUP },
+               { "show", cmd_show, RUN_SETUP | USE_PAGER },
                { "stripspace", cmd_stripspace },
-               { "update-index", cmd_update_index, NEEDS_PREFIX },
-               { "update-ref", cmd_update_ref, NEEDS_PREFIX },
-               { "fmt-merge-msg", cmd_fmt_merge_msg, NEEDS_PREFIX },
-               { "prune", cmd_prune, NEEDS_PREFIX },
-               { "mv", cmd_mv, NEEDS_PREFIX },
+               { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
+               { "tar-tree", cmd_tar_tree, RUN_SETUP },
+               { "zip-tree", cmd_zip_tree, RUN_SETUP },
+               { "unpack-objects", cmd_unpack_objects, RUN_SETUP },
+               { "update-index", cmd_update_index, RUN_SETUP },
+               { "update-ref", cmd_update_ref, RUN_SETUP },
+               { "upload-tar", cmd_upload_tar },
+               { "version", cmd_version },
+               { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER },
+               { "write-tree", cmd_write_tree, RUN_SETUP },
+               { "verify-pack", cmd_verify_pack },
        };
        int i;
 
@@ -276,16 +288,16 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                        continue;
 
                prefix = NULL;
-               if (p->option & NEEDS_PREFIX)
+               if (p->option & RUN_SETUP)
                        prefix = setup_git_directory();
                if (p->option & USE_PAGER)
                        setup_pager();
                if (getenv("GIT_TRACE")) {
-                       int i;
+                       int j;
                        fprintf(stderr, "trace: built-in: git");
-                       for (i = 0; i < argc; ++i) {
+                       for (j = 0; j < argc; ++j) {
                                fputc(' ', stderr);
-                               sq_quote_print(stderr, argv[i]);
+                               sq_quote_print(stderr, argv[j]);
                        }
                        putc('\n', stderr);
                        fflush(stderr);
@@ -375,7 +387,7 @@ int main(int argc, const char **argv, char **envp)
        }
 
        if (errno == ENOENT)
-               cmd_usage(0, exec_path, "'%s' is not a git-command", cmd);
+               help_unknown_cmd(cmd);
 
        fprintf(stderr, "Failed to run command '%s': %s\n",
                cmd, strerror(errno));