Merge branch 'jc/gitpm'
[git] / builtin-add.c
1 /*
2  * "git add" builtin command
3  *
4  * Copyright (C) 2006 Linus Torvalds
5  */
6 #include <fnmatch.h>
7
8 #include "cache.h"
9 #include "builtin.h"
10 #include "dir.h"
11 #include "cache-tree.h"
12
13 static const char builtin_add_usage[] =
14 "git-add [-n] [-v] <filepattern>...";
15
16 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
17 {
18         char *seen;
19         int i, specs;
20         struct dir_entry **src, **dst;
21
22         for (specs = 0; pathspec[specs];  specs++)
23                 /* nothing */;
24         seen = xcalloc(specs, 1);
25
26         src = dst = dir->entries;
27         i = dir->nr;
28         while (--i >= 0) {
29                 struct dir_entry *entry = *src++;
30                 if (!match_pathspec(pathspec, entry->name, entry->len, prefix, seen)) {
31                         free(entry);
32                         continue;
33                 }
34                 *dst++ = entry;
35         }
36         dir->nr = dst - dir->entries;
37
38         for (i = 0; i < specs; i++) {
39                 struct stat st;
40                 const char *match;
41                 if (seen[i])
42                         continue;
43
44                 /* Existing file? We must have ignored it */
45                 match = pathspec[i];
46                 if (!match[0] || !lstat(match, &st))
47                         continue;
48                 die("pathspec '%s' did not match any files", match);
49         }
50 }
51
52 static void fill_directory(struct dir_struct *dir, const char **pathspec)
53 {
54         const char *path, *base;
55         int baselen;
56
57         /* Set up the default git porcelain excludes */
58         memset(dir, 0, sizeof(*dir));
59         dir->exclude_per_dir = ".gitignore";
60         path = git_path("info/exclude");
61         if (!access(path, R_OK))
62                 add_excludes_from_file(dir, path);
63
64         /*
65          * Calculate common prefix for the pathspec, and
66          * use that to optimize the directory walk
67          */
68         baselen = common_prefix(pathspec);
69         path = ".";
70         base = "";
71         if (baselen) {
72                 char *common = xmalloc(baselen + 1);
73                 memcpy(common, *pathspec, baselen);
74                 common[baselen] = 0;
75                 path = base = common;
76         }
77
78         /* Read the directory and prune it */
79         read_directory(dir, path, base, baselen);
80         if (pathspec)
81                 prune_directory(dir, pathspec, baselen);
82 }
83
84 static struct lock_file lock_file;
85
86 int cmd_add(int argc, const char **argv, const char *prefix)
87 {
88         int i, newfd;
89         int verbose = 0, show_only = 0;
90         const char **pathspec;
91         struct dir_struct dir;
92
93         git_config(git_default_config);
94
95         newfd = hold_lock_file_for_update(&lock_file, get_index_file(), 1);
96
97         if (read_cache() < 0)
98                 die("index file corrupt");
99
100         for (i = 1; i < argc; i++) {
101                 const char *arg = argv[i];
102
103                 if (arg[0] != '-')
104                         break;
105                 if (!strcmp(arg, "--")) {
106                         i++;
107                         break;
108                 }
109                 if (!strcmp(arg, "-n")) {
110                         show_only = 1;
111                         continue;
112                 }
113                 if (!strcmp(arg, "-v")) {
114                         verbose = 1;
115                         continue;
116                 }
117                 usage(builtin_add_usage);
118         }
119         pathspec = get_pathspec(prefix, argv + i);
120
121         fill_directory(&dir, pathspec);
122
123         if (show_only) {
124                 const char *sep = "", *eof = "";
125                 for (i = 0; i < dir.nr; i++) {
126                         printf("%s%s", sep, dir.entries[i]->name);
127                         sep = " ";
128                         eof = "\n";
129                 }
130                 fputs(eof, stdout);
131                 return 0;
132         }
133
134         for (i = 0; i < dir.nr; i++)
135                 add_file_to_index(dir.entries[i]->name, verbose);
136
137         if (active_cache_changed) {
138                 if (write_cache(newfd, active_cache, active_nr) ||
139                     close(newfd) || commit_lock_file(&lock_file))
140                         die("Unable to write new index file");
141         }
142
143         return 0;
144 }