Merge branch 'jc/doc-commit-only'
[git] / test-path-utils.c
1 #include "cache.h"
2 #include "string-list.h"
3
4 /*
5  * A "string_list_each_func_t" function that normalizes an entry from
6  * GIT_CEILING_DIRECTORIES.  If the path is unusable for some reason,
7  * die with an explanation.
8  */
9 static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
10 {
11         const char *ceil = item->string;
12         int len = strlen(ceil);
13         char buf[PATH_MAX+1];
14
15         if (len == 0)
16                 die("Empty path is not supported");
17         if (len > PATH_MAX)
18                 die("Path \"%s\" is too long", ceil);
19         if (!is_absolute_path(ceil))
20                 die("Path \"%s\" is not absolute", ceil);
21         if (normalize_path_copy(buf, ceil) < 0)
22                 die("Path \"%s\" could not be normalized", ceil);
23         len = strlen(buf);
24         if (len > 1 && buf[len-1] == '/')
25                 die("Normalized path \"%s\" ended with slash", buf);
26         free(item->string);
27         item->string = xstrdup(buf);
28         return 1;
29 }
30
31 static void normalize_argv_string(const char **var, const char *input)
32 {
33         if (!strcmp(input, "<null>"))
34                 *var = NULL;
35         else if (!strcmp(input, "<empty>"))
36                 *var = "";
37         else
38                 *var = input;
39
40         if (*var && (**var == '<' || **var == '('))
41                 die("Bad value: %s\n", input);
42 }
43
44 int main(int argc, char **argv)
45 {
46         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
47                 char *buf = xmalloc(PATH_MAX + 1);
48                 int rv = normalize_path_copy(buf, argv[2]);
49                 if (rv)
50                         buf = "++failed++";
51                 puts(buf);
52                 return 0;
53         }
54
55         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
56                 while (argc > 2) {
57                         puts(real_path(argv[2]));
58                         argc--;
59                         argv++;
60                 }
61                 return 0;
62         }
63
64         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
65                 while (argc > 2) {
66                         puts(absolute_path(argv[2]));
67                         argc--;
68                         argv++;
69                 }
70                 return 0;
71         }
72
73         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
74                 int len;
75                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
76                 char *path = xstrdup(argv[2]);
77
78                 /*
79                  * We have to normalize the arguments because under
80                  * Windows, bash mangles arguments that look like
81                  * absolute POSIX paths or colon-separate lists of
82                  * absolute POSIX paths into DOS paths (e.g.,
83                  * "/foo:/foo/bar" might be converted to
84                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
85                  * whereas longest_ancestor_length() requires paths
86                  * that use forward slashes.
87                  */
88                 if (normalize_path_copy(path, path))
89                         die("Path \"%s\" could not be normalized", argv[2]);
90                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
91                 filter_string_list(&ceiling_dirs, 0,
92                                    normalize_ceiling_entry, NULL);
93                 len = longest_ancestor_length(path, &ceiling_dirs);
94                 string_list_clear(&ceiling_dirs, 0);
95                 free(path);
96                 printf("%d\n", len);
97                 return 0;
98         }
99
100         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
101                 char *prefix = argv[2];
102                 int prefix_len = strlen(prefix);
103                 int nongit_ok;
104                 setup_git_directory_gently(&nongit_ok);
105                 while (argc > 3) {
106                         puts(prefix_path(prefix, prefix_len, argv[3]));
107                         argc--;
108                         argv++;
109                 }
110                 return 0;
111         }
112
113         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
114                 char *prefix = strip_path_suffix(argv[2], argv[3]);
115                 printf("%s\n", prefix ? prefix : "(null)");
116                 return 0;
117         }
118
119         if (argc == 3 && !strcmp(argv[1], "print_path")) {
120                 puts(argv[2]);
121                 return 0;
122         }
123
124         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
125                 struct strbuf sb = STRBUF_INIT;
126                 const char *in, *prefix, *rel;
127                 normalize_argv_string(&in, argv[2]);
128                 normalize_argv_string(&prefix, argv[3]);
129                 rel = relative_path(in, prefix, &sb);
130                 if (!rel)
131                         puts("(null)");
132                 else
133                         puts(strlen(rel) > 0 ? rel : "(empty)");
134                 strbuf_release(&sb);
135                 return 0;
136         }
137
138         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
139                 argv[1] ? argv[1] : "(there was none)");
140         return 1;
141 }