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