avoid NULL dereference on failed malloc

[git.git] / builtin-add.c

diff --git a/builtin-add.c b/builtin-add.c
index cb67d2c17e4017e8deede61b30c0eb7c8c60ac1e..c1b229a9d8a026ec88cdbf0492856021cacc8097 100644 (file)
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -10,12 +10,14 @@
 #include "cache-tree.h"
 #include "run-command.h"
 #include "parse-options.h"
+#include "diff.h"
+#include "revision.h"
 
 static const char * const builtin_add_usage[] = {
        "git add [options] [--] <filepattern>...",
        NULL
 };
-static int patch_interactive, add_interactive;
+static int patch_interactive, add_interactive, edit_interactive;
 static int take_worktree_changes;
 
 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
@@ -61,7 +63,7 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
        fill_pathspec_matches(pathspec, seen, specs);
 
        for (i = 0; i < specs; i++) {
-               if (!seen[i] && !file_exists(pathspec[i]))
+               if (!seen[i] && pathspec[i][0] && !file_exists(pathspec[i]))
                        die("pathspec '%s' did not match any files",
                                        pathspec[i]);
        }
@@ -187,6 +189,51 @@ int interactive_add(int argc, const char **argv, const char *prefix)
        return status;
 }
 
+int edit_patch(int argc, const char **argv, const char *prefix)
+{
+       char *file = xstrdup(git_path("ADD_EDIT.patch"));
+       const char *apply_argv[] = { "apply", "--recount", "--cached",
+               file, NULL };
+       struct child_process child;
+       struct rev_info rev;
+       int out;
+       struct stat st;
+
+       git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
+
+       if (read_cache() < 0)
+               die ("Could not read the index");
+
+       init_revisions(&rev, prefix);
+       rev.diffopt.context = 7;
+
+       argc = setup_revisions(argc, argv, &rev, NULL);
+       rev.diffopt.output_format = DIFF_FORMAT_PATCH;
+       out = open(file, O_CREAT | O_WRONLY, 0644);
+       if (out < 0)
+               die ("Could not open '%s' for writing.", file);
+       rev.diffopt.file = fdopen(out, "w");
+       rev.diffopt.close_file = 1;
+       if (run_diff_files(&rev, 0))
+               die ("Could not write patch");
+
+       launch_editor(file, NULL, NULL);
+
+       if (stat(file, &st))
+               die("Could not stat '%s'", file);
+       if (!st.st_size)
+               die("Empty patch. Aborted.");
+
+       memset(&child, 0, sizeof(child));
+       child.git_cmd = 1;
+       child.argv = apply_argv;
+       if (run_command(&child))
+               die ("Could not apply '%s'", file);
+
+       unlink(file);
+       return 0;
+}
+
 static struct lock_file lock_file;
 
 static const char ignore_error[] =
@@ -201,6 +248,7 @@ static struct option builtin_add_options[] = {
        OPT_GROUP(""),
        OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
        OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
+       OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
        OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
        OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
        OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
@@ -250,15 +298,20 @@ int cmd_add(int argc, const char **argv, const char *prefix)
        int add_new_files;
        int require_pathspec;
 
-       argc = parse_options(argc, argv, builtin_add_options,
-                         builtin_add_usage, 0);
+       argc = parse_options(argc, argv, prefix, builtin_add_options,
+                         builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
        if (patch_interactive)
                add_interactive = 1;
        if (add_interactive)
-               exit(interactive_add(argc, argv, prefix));
+               exit(interactive_add(argc - 1, argv + 1, prefix));
 
        git_config(add_config, NULL);
 
+       if (edit_interactive)
+               return(edit_patch(argc, argv, prefix));
+       argc--;
+       argv++;
+
        if (addremove && take_worktree_changes)
                die("-A and -u are mutually incompatible");
        if ((addremove || take_worktree_changes) && !argc) {