Simplify calling of CR/LF conversion routines
[git/git.git] / entry.c
CommitLineData
12dccc16 1#include "cache.h"
8e440259 2#include "blob.h"
12dccc16
LT
3
4static void create_directories(const char *path, struct checkout *state)
5{
6 int len = strlen(path);
7 char *buf = xmalloc(len + 1);
8 const char *slash = path;
9
10 while ((slash = strchr(slash+1, '/')) != NULL) {
11 len = slash - path;
12 memcpy(buf, path, len);
13 buf[len] = 0;
f312de01 14 if (mkdir(buf, 0777)) {
12dccc16
LT
15 if (errno == EEXIST) {
16 struct stat st;
f312de01 17 if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777))
12dccc16
LT
18 continue;
19 if (!stat(buf, &st) && S_ISDIR(st.st_mode))
20 continue; /* ok */
21 }
22 die("cannot create directory at %s", buf);
23 }
24 }
25 free(buf);
26}
27
28static void remove_subtree(const char *path)
29{
30 DIR *dir = opendir(path);
31 struct dirent *de;
32 char pathbuf[PATH_MAX];
33 char *name;
34
35 if (!dir)
36 die("cannot opendir %s", path);
37 strcpy(pathbuf, path);
38 name = pathbuf + strlen(path);
39 *name++ = '/';
40 while ((de = readdir(dir)) != NULL) {
41 struct stat st;
42 if ((de->d_name[0] == '.') &&
43 ((de->d_name[1] == 0) ||
44 ((de->d_name[1] == '.') && de->d_name[2] == 0)))
45 continue;
46 strcpy(name, de->d_name);
47 if (lstat(pathbuf, &st))
48 die("cannot lstat %s", pathbuf);
49 if (S_ISDIR(st.st_mode))
50 remove_subtree(pathbuf);
51 else if (unlink(pathbuf))
52 die("cannot unlink %s", pathbuf);
53 }
54 closedir(dir);
55 if (rmdir(path))
56 die("cannot rmdir %s", path);
57}
58
d48a72f3 59static int create_file(const char *path, unsigned int mode)
12dccc16 60{
12dccc16 61 mode = (mode & 0100) ? 0777 : 0666;
781411ed 62 return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
12dccc16
LT
63}
64
de84f99c 65static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile)
12dccc16
LT
66{
67 int fd;
68 void *new;
69 unsigned long size;
70 long wrote;
21666f1a 71 enum object_type type;
12dccc16 72
21666f1a
NP
73 new = read_sha1_file(ce->sha1, &type, &size);
74 if (!new || type != OBJ_BLOB) {
12dccc16
LT
75 if (new)
76 free(new);
215a7ad1 77 return error("git-checkout-index: unable to read sha1 file of %s (%s)",
12dccc16
LT
78 path, sha1_to_hex(ce->sha1));
79 }
80 switch (ntohl(ce->ce_mode) & S_IFMT) {
6c510bee 81 char *buf;
6c510bee 82
12dccc16 83 case S_IFREG:
de84f99c
SP
84 if (to_tempfile) {
85 strcpy(path, ".merge_file_XXXXXX");
86 fd = mkstemp(path);
87 } else
88 fd = create_file(path, ntohl(ce->ce_mode));
12dccc16
LT
89 if (fd < 0) {
90 free(new);
215a7ad1 91 return error("git-checkout-index: unable to create file %s (%s)",
12dccc16
LT
92 path, strerror(errno));
93 }
6c510bee
LT
94
95 /*
96 * Convert from git internal format to working tree format
97 */
ac78e548
AR
98 buf = convert_to_working_tree(ce->name, new, &size);
99 if (buf) {
6c510bee
LT
100 free(new);
101 new = buf;
6c510bee
LT
102 }
103
93822c22 104 wrote = write_in_full(fd, new, size);
12dccc16
LT
105 close(fd);
106 free(new);
107 if (wrote != size)
215a7ad1 108 return error("git-checkout-index: unable to write file %s", path);
12dccc16
LT
109 break;
110 case S_IFLNK:
78a8d641
JS
111 if (to_tempfile || !has_symlinks) {
112 if (to_tempfile) {
113 strcpy(path, ".merge_link_XXXXXX");
114 fd = mkstemp(path);
115 } else
116 fd = create_file(path, 0666);
de84f99c
SP
117 if (fd < 0) {
118 free(new);
119 return error("git-checkout-index: unable to create "
120 "file %s (%s)", path, strerror(errno));
121 }
93822c22 122 wrote = write_in_full(fd, new, size);
de84f99c
SP
123 close(fd);
124 free(new);
125 if (wrote != size)
126 return error("git-checkout-index: unable to write file %s",
127 path);
128 } else {
129 wrote = symlink(new, path);
12dccc16 130 free(new);
de84f99c
SP
131 if (wrote)
132 return error("git-checkout-index: unable to create "
133 "symlink %s (%s)", path, strerror(errno));
12dccc16 134 }
12dccc16
LT
135 break;
136 default:
137 free(new);
215a7ad1 138 return error("git-checkout-index: unknown file mode for %s", path);
12dccc16
LT
139 }
140
6ee67f26 141 if (state->refresh_cache) {
12dccc16
LT
142 struct stat st;
143 lstat(ce->name, &st);
144 fill_stat_cache_info(ce, &st);
145 }
146 return 0;
147}
148
de84f99c 149int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath)
12dccc16 150{
095c424d 151 static char path[PATH_MAX + 1];
de84f99c 152 struct stat st;
12dccc16
LT
153 int len = state->base_dir_len;
154
de84f99c
SP
155 if (topath)
156 return write_entry(ce, topath, state, 1);
157
12dccc16
LT
158 memcpy(path, state->base_dir, len);
159 strcpy(path + len, ce->name);
160
161 if (!lstat(path, &st)) {
5f73076c 162 unsigned changed = ce_match_stat(ce, &st, 1);
12dccc16
LT
163 if (!changed)
164 return 0;
165 if (!state->force) {
166 if (!state->quiet)
215a7ad1 167 fprintf(stderr, "git-checkout-index: %s already exists\n", path);
4b12dae6 168 return -1;
12dccc16
LT
169 }
170
171 /*
172 * We unlink the old file, to get the new one with the
173 * right permissions (including umask, which is nasty
174 * to emulate by hand - much easier to let the system
175 * just do the right thing)
176 */
177 unlink(path);
d48a72f3
LT
178 if (S_ISDIR(st.st_mode)) {
179 if (!state->force)
180 return error("%s is a directory", path);
181 remove_subtree(path);
182 }
de84f99c 183 } else if (state->not_new)
12dccc16
LT
184 return 0;
185 create_directories(path, state);
de84f99c 186 return write_entry(ce, path, state, 0);
12dccc16 187}