Document git read-tree --trivial
[gitweb.git] / builtin-add.c
index 2d256981733345f4a430e11812b6851f0351aabd..159117106a3db52b430cb1bf82d094e54693f690 100644 (file)
@@ -3,15 +3,21 @@
  *
  * Copyright (C) 2006 Linus Torvalds
  */
-#include <fnmatch.h>
-
 #include "cache.h"
 #include "builtin.h"
 #include "dir.h"
+#include "exec_cmd.h"
 #include "cache-tree.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "commit.h"
+#include "revision.h"
 
 static const char builtin_add_usage[] =
-"git-add [-n] [-v] <filepattern>...";
+"git-add [-n] [-v] [-f] [--interactive | -i] [-u] [--] <filepattern>...";
+
+static int take_worktree_changes;
+static const char *excludes_file;
 
 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
 {
@@ -21,18 +27,15 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
 
        for (specs = 0; pathspec[specs];  specs++)
                /* nothing */;
-       seen = xmalloc(specs);
-       memset(seen, 0, specs);
+       seen = xcalloc(specs, 1);
 
        src = dst = dir->entries;
        i = dir->nr;
        while (--i >= 0) {
                struct dir_entry *entry = *src++;
-               if (!match_pathspec(pathspec, entry->name, entry->len, prefix, seen)) {
-                       free(entry);
-                       continue;
-               }
-               *dst++ = entry;
+               if (match_pathspec(pathspec, entry->name, entry->len,
+                                  prefix, seen))
+                       *dst++ = entry;
        }
        dir->nr = dst - dir->entries;
 
@@ -42,10 +45,20 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
                if (seen[i])
                        continue;
 
-               /* Existing file? We must have ignored it */
                match = pathspec[i];
-               if (!match[0] || !lstat(match, &st))
+               if (!match[0])
+                       continue;
+
+               /* Existing file? We must have ignored it */
+               if (!lstat(match, &st)) {
+                       struct dir_entry *ent;
+
+                       ent = dir_add_name(dir, match, strlen(match));
+                       ent->ignored = 1;
+                       if (S_ISDIR(st.st_mode))
+                               ent->ignored_dir = 1;
                        continue;
+               }
                die("pathspec '%s' did not match any files", match);
        }
 }
@@ -61,6 +74,8 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec)
        path = git_path("info/exclude");
        if (!access(path, R_OK))
                add_excludes_from_file(dir, path);
+       if (!access(excludes_file, R_OK))
+               add_excludes_from_file(dir, excludes_file);
 
        /*
         * Calculate common prefix for the pathspec, and
@@ -71,75 +86,98 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec)
        base = "";
        if (baselen) {
                char *common = xmalloc(baselen + 1);
-               common = xmalloc(baselen + 1);
                memcpy(common, *pathspec, baselen);
                common[baselen] = 0;
                path = base = common;
        }
 
        /* Read the directory and prune it */
-       read_directory(dir, path, base, baselen);
+       read_directory(dir, path, base, baselen, pathspec);
        if (pathspec)
                prune_directory(dir, pathspec, baselen);
 }
 
-static int add_file_to_index(const char *path, int verbose)
+static void update_callback(struct diff_queue_struct *q,
+                           struct diff_options *opt, void *cbdata)
 {
-       int size, namelen;
-       struct stat st;
-       struct cache_entry *ce;
-
-       if (lstat(path, &st))
-               die("%s: unable to stat (%s)", path, strerror(errno));
-
-       if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode))
-               die("%s: can only add regular files or symbolic links", path);
-
-       namelen = strlen(path);
-       size = cache_entry_size(namelen);
-       ce = xcalloc(1, size);
-       memcpy(ce->name, path, namelen);
-       ce->ce_flags = htons(namelen);
-       fill_stat_cache_info(ce, &st);
-
-       ce->ce_mode = create_ce_mode(st.st_mode);
-       if (!trust_executable_bit) {
-               /* If there is an existing entry, pick the mode bits
-                * from it.
-                */
-               int pos = cache_name_pos(path, namelen);
-               if (pos >= 0)
-                       ce->ce_mode = active_cache[pos]->ce_mode;
+       int i, verbose;
+
+       verbose = *((int *)cbdata);
+       for (i = 0; i < q->nr; i++) {
+               struct diff_filepair *p = q->queue[i];
+               const char *path = p->one->path;
+               switch (p->status) {
+               default:
+                       die("unexpacted diff status %c", p->status);
+               case DIFF_STATUS_UNMERGED:
+               case DIFF_STATUS_MODIFIED:
+                       add_file_to_cache(path, verbose);
+                       break;
+               case DIFF_STATUS_DELETED:
+                       remove_file_from_cache(path);
+                       if (verbose)
+                               printf("remove '%s'\n", path);
+                       break;
+               }
        }
+}
 
-       if (index_path(ce->sha1, path, &st, 1))
-               die("unable to index file %s", path);
-       if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD))
-               die("unable to add %s to index",path);
-       if (verbose)
-               printf("add '%s'\n", path);
-       cache_tree_invalidate_path(active_cache_tree, path);
-       return 0;
+static void update(int verbose, const char **files)
+{
+       struct rev_info rev;
+       init_revisions(&rev, "");
+       setup_revisions(0, NULL, &rev, NULL);
+       rev.prune_data = get_pathspec(rev.prefix, files);
+       rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
+       rev.diffopt.format_callback = update_callback;
+       rev.diffopt.format_callback_data = &verbose;
+       if (read_cache() < 0)
+               die("index file corrupt");
+       run_diff_files(&rev, 0);
+}
+
+static int git_add_config(const char *var, const char *value)
+{
+       if (!strcmp(var, "core.excludesfile")) {
+               if (!value)
+                       die("core.excludesfile without value");
+               excludes_file = xstrdup(value);
+               return 0;
+       }
+
+       return git_default_config(var, value);
 }
 
 static struct lock_file lock_file;
 
-int cmd_add(int argc, const char **argv, char **envp)
+static const char ignore_warning[] =
+"The following paths are ignored by one of your .gitignore files:\n";
+
+int cmd_add(int argc, const char **argv, const char *prefix)
 {
        int i, newfd;
-       int verbose = 0, show_only = 0;
-       const char *prefix = setup_git_directory();
+       int verbose = 0, show_only = 0, ignored_too = 0;
        const char **pathspec;
        struct dir_struct dir;
+       int add_interactive = 0;
 
-       git_config(git_default_config);
+       for (i = 1; i < argc; i++) {
+               if (!strcmp("--interactive", argv[i]) ||
+                   !strcmp("-i", argv[i]))
+                       add_interactive++;
+       }
+       if (add_interactive) {
+               const char *args[] = { "add--interactive", NULL };
 
-       newfd = hold_lock_file_for_update(&lock_file, get_index_file());
-       if (newfd < 0)
-               die("unable to create new index file");
+               if (add_interactive != 1 || argc != 2)
+                       die("add --interactive does not take any parameters");
+               execv_git_cmd(args);
+               exit(1);
+       }
 
-       if (read_cache() < 0)
-               die("index file corrupt");
+       git_config(git_add_config);
+
+       newfd = hold_locked_index(&lock_file, 1);
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
@@ -154,13 +192,31 @@ int cmd_add(int argc, const char **argv, char **envp)
                        show_only = 1;
                        continue;
                }
+               if (!strcmp(arg, "-f")) {
+                       ignored_too = 1;
+                       continue;
+               }
                if (!strcmp(arg, "-v")) {
                        verbose = 1;
                        continue;
                }
-               die(builtin_add_usage);
+               if (!strcmp(arg, "-u")) {
+                       take_worktree_changes = 1;
+                       continue;
+               }
+               usage(builtin_add_usage);
+       }
+
+       if (take_worktree_changes) {
+               update(verbose, argv + i);
+               goto finish;
+       }
+
+       if (argc <= i) {
+               fprintf(stderr, "Nothing specified, nothing added.\n");
+               fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
+               return 0;
        }
-       git_config(git_default_config);
        pathspec = get_pathspec(prefix, argv + i);
 
        fill_directory(&dir, pathspec);
@@ -168,6 +224,8 @@ int cmd_add(int argc, const char **argv, char **envp)
        if (show_only) {
                const char *sep = "", *eof = "";
                for (i = 0; i < dir.nr; i++) {
+                       if (!ignored_too && dir.entries[i]->ignored)
+                               continue;
                        printf("%s%s", sep, dir.entries[i]->name);
                        sep = " ";
                        eof = "\n";
@@ -176,12 +234,37 @@ int cmd_add(int argc, const char **argv, char **envp)
                return 0;
        }
 
+       if (read_cache() < 0)
+               die("index file corrupt");
+
+       if (!ignored_too) {
+               int has_ignored = 0;
+               for (i = 0; i < dir.nr; i++)
+                       if (dir.entries[i]->ignored)
+                               has_ignored = 1;
+               if (has_ignored) {
+                       fprintf(stderr, ignore_warning);
+                       for (i = 0; i < dir.nr; i++) {
+                               if (!dir.entries[i]->ignored)
+                                       continue;
+                               fprintf(stderr, "%s", dir.entries[i]->name);
+                               if (dir.entries[i]->ignored_dir)
+                                       fprintf(stderr, " (directory)");
+                               fputc('\n', stderr);
+                       }
+                       fprintf(stderr,
+                               "Use -f if you really want to add them.\n");
+                       exit(1);
+               }
+       }
+
        for (i = 0; i < dir.nr; i++)
-               add_file_to_index(dir.entries[i]->name, verbose);
+               add_file_to_cache(dir.entries[i]->name, verbose);
 
+ finish:
        if (active_cache_changed) {
                if (write_cache(newfd, active_cache, active_nr) ||
-                   close(newfd) || commit_lock_file(&lock_file))
+                   close(newfd) || commit_locked_index(&lock_file))
                        die("Unable to write new index file");
        }