Merge branch 'sb/submodule-move-nested'
[git] / t / helper / test-path-utils.c
1 #include "test-tool.h"
2 #include "cache.h"
3 #include "string-list.h"
4
5 /*
6  * A "string_list_each_func_t" function that normalizes an entry from
7  * GIT_CEILING_DIRECTORIES.  If the path is unusable for some reason,
8  * die with an explanation.
9  */
10 static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
11 {
12         char *ceil = item->string;
13
14         if (!*ceil)
15                 die("Empty path is not supported");
16         if (!is_absolute_path(ceil))
17                 die("Path \"%s\" is not absolute", ceil);
18         if (normalize_path_copy(ceil, ceil) < 0)
19                 die("Path \"%s\" could not be normalized", ceil);
20         return 1;
21 }
22
23 static void normalize_argv_string(const char **var, const char *input)
24 {
25         if (!strcmp(input, "<null>"))
26                 *var = NULL;
27         else if (!strcmp(input, "<empty>"))
28                 *var = "";
29         else
30                 *var = input;
31
32         if (*var && (**var == '<' || **var == '('))
33                 die("Bad value: %s\n", input);
34 }
35
36 struct test_data {
37         const char *from;  /* input:  transform from this ... */
38         const char *to;    /* output: ... to this.            */
39         const char *alternative; /* output: ... or this.      */
40 };
41
42 /*
43  * Compatibility wrappers for OpenBSD, whose basename(3) and dirname(3)
44  * have const parameters.
45  */
46 static char *posix_basename(char *path)
47 {
48         return basename(path);
49 }
50
51 static char *posix_dirname(char *path)
52 {
53         return dirname(path);
54 }
55
56 static int test_function(struct test_data *data, char *(*func)(char *input),
57         const char *funcname)
58 {
59         int failed = 0, i;
60         char buffer[1024];
61         char *to;
62
63         for (i = 0; data[i].to; i++) {
64                 if (!data[i].from)
65                         to = func(NULL);
66                 else {
67                         xsnprintf(buffer, sizeof(buffer), "%s", data[i].from);
68                         to = func(buffer);
69                 }
70                 if (!strcmp(to, data[i].to))
71                         continue;
72                 if (!data[i].alternative)
73                         error("FAIL: %s(%s) => '%s' != '%s'\n",
74                                 funcname, data[i].from, to, data[i].to);
75                 else if (!strcmp(to, data[i].alternative))
76                         continue;
77                 else
78                         error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
79                                 funcname, data[i].from, to, data[i].to,
80                                 data[i].alternative);
81                 failed = 1;
82         }
83         return failed;
84 }
85
86 static struct test_data basename_data[] = {
87         /* --- POSIX type paths --- */
88         { NULL,              "."    },
89         { "",                "."    },
90         { ".",               "."    },
91         { "..",              ".."   },
92         { "/",               "/"    },
93         { "//",              "/", "//" },
94         { "///",             "/", "//" },
95         { "////",            "/", "//" },
96         { "usr",             "usr"  },
97         { "/usr",            "usr"  },
98         { "/usr/",           "usr"  },
99         { "/usr//",          "usr"  },
100         { "/usr/lib",        "lib"  },
101         { "usr/lib",         "lib"  },
102         { "usr/lib///",      "lib"  },
103
104 #if defined(__MINGW32__) || defined(_MSC_VER)
105         /* --- win32 type paths --- */
106         { "\\usr",           "usr"  },
107         { "\\usr\\",         "usr"  },
108         { "\\usr\\\\",       "usr"  },
109         { "\\usr\\lib",      "lib"  },
110         { "usr\\lib",        "lib"  },
111         { "usr\\lib\\\\\\",  "lib"  },
112         { "C:/usr",          "usr"  },
113         { "C:/usr",          "usr"  },
114         { "C:/usr/",         "usr"  },
115         { "C:/usr//",        "usr"  },
116         { "C:/usr/lib",      "lib"  },
117         { "C:usr/lib",       "lib"  },
118         { "C:usr/lib///",    "lib"  },
119         { "C:",              "."    },
120         { "C:a",             "a"    },
121         { "C:/",             "/"    },
122         { "C:///",           "/"    },
123         { "\\",              "\\", "/" },
124         { "\\\\",            "\\", "/" },
125         { "\\\\\\",          "\\", "/" },
126 #endif
127         { NULL,              NULL   }
128 };
129
130 static struct test_data dirname_data[] = {
131         /* --- POSIX type paths --- */
132         { NULL,              "."      },
133         { "",                "."      },
134         { ".",               "."      },
135         { "..",              "."      },
136         { "/",               "/"      },
137         { "//",              "/", "//" },
138         { "///",             "/", "//" },
139         { "////",            "/", "//" },
140         { "usr",             "."      },
141         { "/usr",            "/"      },
142         { "/usr/",           "/"      },
143         { "/usr//",          "/"      },
144         { "/usr/lib",        "/usr"   },
145         { "usr/lib",         "usr"    },
146         { "usr/lib///",      "usr"    },
147
148 #if defined(__MINGW32__) || defined(_MSC_VER)
149         /* --- win32 type paths --- */
150         { "\\",              "\\"     },
151         { "\\\\",            "\\\\"   },
152         { "\\usr",           "\\"     },
153         { "\\usr\\",         "\\"     },
154         { "\\usr\\\\",       "\\"     },
155         { "\\usr\\lib",      "\\usr"  },
156         { "usr\\lib",        "usr"    },
157         { "usr\\lib\\\\\\",  "usr"    },
158         { "C:a",             "C:."    },
159         { "C:/",             "C:/"    },
160         { "C:///",           "C:/"    },
161         { "C:/usr",          "C:/"    },
162         { "C:/usr/",         "C:/"    },
163         { "C:/usr//",        "C:/"    },
164         { "C:/usr/lib",      "C:/usr" },
165         { "C:usr/lib",       "C:usr"  },
166         { "C:usr/lib///",    "C:usr"  },
167         { "\\\\\\",          "\\"     },
168         { "\\\\\\\\",        "\\"     },
169         { "C:",              "C:.", "." },
170 #endif
171         { NULL,              NULL     }
172 };
173
174 int cmd__path_utils(int argc, const char **argv)
175 {
176         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
177                 char *buf = xmallocz(strlen(argv[2]));
178                 int rv = normalize_path_copy(buf, argv[2]);
179                 if (rv)
180                         buf = "++failed++";
181                 puts(buf);
182                 return 0;
183         }
184
185         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
186                 while (argc > 2) {
187                         puts(real_path(argv[2]));
188                         argc--;
189                         argv++;
190                 }
191                 return 0;
192         }
193
194         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
195                 while (argc > 2) {
196                         puts(absolute_path(argv[2]));
197                         argc--;
198                         argv++;
199                 }
200                 return 0;
201         }
202
203         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
204                 int len;
205                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
206                 char *path = xstrdup(argv[2]);
207
208                 /*
209                  * We have to normalize the arguments because under
210                  * Windows, bash mangles arguments that look like
211                  * absolute POSIX paths or colon-separate lists of
212                  * absolute POSIX paths into DOS paths (e.g.,
213                  * "/foo:/foo/bar" might be converted to
214                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
215                  * whereas longest_ancestor_length() requires paths
216                  * that use forward slashes.
217                  */
218                 if (normalize_path_copy(path, path))
219                         die("Path \"%s\" could not be normalized", argv[2]);
220                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
221                 filter_string_list(&ceiling_dirs, 0,
222                                    normalize_ceiling_entry, NULL);
223                 len = longest_ancestor_length(path, &ceiling_dirs);
224                 string_list_clear(&ceiling_dirs, 0);
225                 free(path);
226                 printf("%d\n", len);
227                 return 0;
228         }
229
230         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
231                 const char *prefix = argv[2];
232                 int prefix_len = strlen(prefix);
233                 int nongit_ok;
234                 setup_git_directory_gently(&nongit_ok);
235                 while (argc > 3) {
236                         puts(prefix_path(prefix, prefix_len, argv[3]));
237                         argc--;
238                         argv++;
239                 }
240                 return 0;
241         }
242
243         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
244                 char *prefix = strip_path_suffix(argv[2], argv[3]);
245                 printf("%s\n", prefix ? prefix : "(null)");
246                 return 0;
247         }
248
249         if (argc == 3 && !strcmp(argv[1], "print_path")) {
250                 puts(argv[2]);
251                 return 0;
252         }
253
254         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
255                 struct strbuf sb = STRBUF_INIT;
256                 const char *in, *prefix, *rel;
257                 normalize_argv_string(&in, argv[2]);
258                 normalize_argv_string(&prefix, argv[3]);
259                 rel = relative_path(in, prefix, &sb);
260                 if (!rel)
261                         puts("(null)");
262                 else
263                         puts(strlen(rel) > 0 ? rel : "(empty)");
264                 strbuf_release(&sb);
265                 return 0;
266         }
267
268         if (argc == 2 && !strcmp(argv[1], "basename"))
269                 return test_function(basename_data, posix_basename, argv[1]);
270
271         if (argc == 2 && !strcmp(argv[1], "dirname"))
272                 return test_function(dirname_data, posix_dirname, argv[1]);
273
274         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
275                 argv[1] ? argv[1] : "(there was none)");
276         return 1;
277 }