Documentation: update tutorial's discussion of origin
[gitweb.git] / builtin-add.c
index 7083820f7b2745708e40f624935a0ad231351e24..e7a1b4d9ab43cbb7de48b099c3afb721903f516b 100644 (file)
@@ -3,95 +3,14 @@
  *
  * 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"
 
 static const char builtin_add_usage[] =
-"git-add [-n] [-v] <filepattern>...";
-
-static int common_prefix(const char **pathspec)
-{
-       const char *path, *slash, *next;
-       int prefix;
-
-       if (!pathspec)
-               return 0;
-
-       path = *pathspec;
-       slash = strrchr(path, '/');
-       if (!slash)
-               return 0;
-
-       prefix = slash - path + 1;
-       while ((next = *++pathspec) != NULL) {
-               int len = strlen(next);
-               if (len >= prefix && !memcmp(path, next, len))
-                       continue;
-               for (;;) {
-                       if (!len)
-                               return 0;
-                       if (next[--len] != '/')
-                               continue;
-                       if (memcmp(path, next, len+1))
-                               continue;
-                       prefix = len + 1;
-                       break;
-               }
-       }
-       return prefix;
-}
-
-static int match_one(const char *match, const char *name, int namelen)
-{
-       int matchlen;
-
-       /* If the match was just the prefix, we matched */
-       matchlen = strlen(match);
-       if (!matchlen)
-               return 1;
-
-       /*
-        * If we don't match the matchstring exactly,
-        * we need to match by fnmatch
-        */
-       if (strncmp(match, name, matchlen))
-               return !fnmatch(match, name, 0);
-
-       /*
-        * If we did match the string exactly, we still
-        * need to make sure that it happened on a path
-        * component boundary (ie either the last character
-        * of the match was '/', or the next character of
-        * the name was '/' or the terminating NUL.
-        */
-       return  match[matchlen-1] == '/' ||
-               name[matchlen] == '/' ||
-               !name[matchlen];
-}
-
-static int match(const char **pathspec, const char *name, int namelen, int prefix, char *seen)
-{
-       int retval;
-       const char *match;
-
-       name += prefix;
-       namelen -= prefix;
-
-       for (retval = 0; (match = *pathspec++) != NULL; seen++) {
-               if (retval & *seen)
-                       continue;
-               match += prefix;
-               if (match_one(match, name, namelen)) {
-                       retval = 1;
-                       *seen = 1;
-               }
-       }
-       return retval;
-}
+"git-add [-n] [-v] [-f] [--interactive] [--] <filepattern>...";
 
 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
 {
@@ -101,18 +20,15 @@ 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, 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;
 
@@ -122,10 +38,20 @@ 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 (!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);
        }
 }
@@ -151,7 +77,6 @@ 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;
@@ -163,63 +88,35 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec)
                prune_directory(dir, pathspec, baselen);
 }
 
-static int add_file_to_index(const char *path, int verbose)
-{
-       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);
+static struct lock_file lock_file;
 
-       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);
+static const char ignore_warning[] =
+"The following paths are ignored by one of your .gitignore files:\n";
 
-       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;
-       }
-
-       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 struct cache_file cache_file;
-
-int cmd_add(int argc, const char **argv, char **envp)
+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]))
+                       add_interactive++;
+       }
+       if (add_interactive) {
+               const char *args[] = { "add--interactive", NULL };
 
-       newfd = hold_index_file_for_update(&cache_file, get_index_file());
-       if (newfd < 0)
-               die("unable to create new cachefile");
+               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_default_config);
+
+       newfd = hold_lock_file_for_update(&lock_file, get_index_file(), 1);
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
@@ -234,13 +131,21 @@ 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);
+               usage(builtin_add_usage);
+       }
+       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);
@@ -248,6 +153,8 @@ 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";
@@ -256,12 +163,36 @@ 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);
 
        if (active_cache_changed) {
                if (write_cache(newfd, active_cache, active_nr) ||
-                   commit_index_file(&cache_file))
+                   close(newfd) || commit_lock_file(&lock_file))
                        die("Unable to write new index file");
        }