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 }