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