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 }