t/helper/test-path-utils.c

   1 #include "test-tool.h"
   2 #include "cache.h"
   3 #include "string-list.h"
   4 #include "utf8.h"
   5
   6 /*
   7  * A "string_list_each_func_t" function that normalizes an entry from
   8  * GIT_CEILING_DIRECTORIES.  If the path is unusable for some reason,
   9  * die with an explanation.
  10  */
  11 static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
  12 {
  13         char *ceil = item->string;
  14
  15         if (!*ceil)
  16                 die("Empty path is not supported");
  17         if (!is_absolute_path(ceil))
  18                 die("Path \"%s\" is not absolute", ceil);
  19         if (normalize_path_copy(ceil, ceil) < 0)
  20                 die("Path \"%s\" could not be normalized", ceil);
  21         return 1;
  22 }
  23
  24 static void normalize_argv_string(const char **var, const char *input)
  25 {
  26         if (!strcmp(input, "<null>"))
  27                 *var = NULL;
  28         else if (!strcmp(input, "<empty>"))
  29                 *var = "";
  30         else
  31                 *var = input;
  32
  33         if (*var && (**var == '<' || **var == '('))
  34                 die("Bad value: %s\n", input);
  35 }
  36
  37 struct test_data {
  38         const char *from;  /* input:  transform from this ... */
  39         const char *to;    /* output: ... to this.            */
  40         const char *alternative; /* output: ... or this.      */
  41 };
  42
  43 /*
  44  * Compatibility wrappers for OpenBSD, whose basename(3) and dirname(3)
  45  * have const parameters.
  46  */
  47 static char *posix_basename(char *path)
  48 {
  49         return basename(path);
  50 }
  51
  52 static char *posix_dirname(char *path)
  53 {
  54         return dirname(path);
  55 }
  56
  57 static int test_function(struct test_data *data, char *(*func)(char *input),
  58         const char *funcname)
  59 {
  60         int failed = 0, i;
  61         char buffer[1024];
  62         char *to;
  63
  64         for (i = 0; data[i].to; i++) {
  65                 if (!data[i].from)
  66                         to = func(NULL);
  67                 else {
  68                         xsnprintf(buffer, sizeof(buffer), "%s", data[i].from);
  69                         to = func(buffer);
  70                 }
  71                 if (!strcmp(to, data[i].to))
  72                         continue;
  73                 if (!data[i].alternative)
  74                         error("FAIL: %s(%s) => '%s' != '%s'\n",
  75                                 funcname, data[i].from, to, data[i].to);
  76                 else if (!strcmp(to, data[i].alternative))
  77                         continue;
  78                 else
  79                         error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
  80                                 funcname, data[i].from, to, data[i].to,
  81                                 data[i].alternative);
  82                 failed = 1;
  83         }
  84         return failed;
  85 }
  86
  87 static struct test_data basename_data[] = {
  88         /* --- POSIX type paths --- */
  89         { NULL,              "."    },
  90         { "",                "."    },
  91         { ".",               "."    },
  92         { "..",              ".."   },
  93         { "/",               "/"    },
  94         { "//",              "/", "//" },
  95         { "///",             "/", "//" },
  96         { "////",            "/", "//" },
  97         { "usr",             "usr"  },
  98         { "/usr",            "usr"  },
  99         { "/usr/",           "usr"  },
 100         { "/usr//",          "usr"  },
 101         { "/usr/lib",        "lib"  },
 102         { "usr/lib",         "lib"  },
 103         { "usr/lib///",      "lib"  },
 104
 105 #if defined(__MINGW32__) || defined(_MSC_VER)
 106         /* --- win32 type paths --- */
 107         { "\\usr",           "usr"  },
 108         { "\\usr\\",         "usr"  },
 109         { "\\usr\\\\",       "usr"  },
 110         { "\\usr\\lib",      "lib"  },
 111         { "usr\\lib",        "lib"  },
 112         { "usr\\lib\\\\\\",  "lib"  },
 113         { "C:/usr",          "usr"  },
 114         { "C:/usr",          "usr"  },
 115         { "C:/usr/",         "usr"  },
 116         { "C:/usr//",        "usr"  },
 117         { "C:/usr/lib",      "lib"  },
 118         { "C:usr/lib",       "lib"  },
 119         { "C:usr/lib///",    "lib"  },
 120         { "C:",              "."    },
 121         { "C:a",             "a"    },
 122         { "C:/",             "/"    },
 123         { "C:///",           "/"    },
 124         { "\\",              "\\", "/" },
 125         { "\\\\",            "\\", "/" },
 126         { "\\\\\\",          "\\", "/" },
 127 #endif
 128         { NULL,              NULL   }
 129 };
 130
 131 static struct test_data dirname_data[] = {
 132         /* --- POSIX type paths --- */
 133         { NULL,              "."      },
 134         { "",                "."      },
 135         { ".",               "."      },
 136         { "..",              "."      },
 137         { "/",               "/"      },
 138         { "//",              "/", "//" },
 139         { "///",             "/", "//" },
 140         { "////",            "/", "//" },
 141         { "usr",             "."      },
 142         { "/usr",            "/"      },
 143         { "/usr/",           "/"      },
 144         { "/usr//",          "/"      },
 145         { "/usr/lib",        "/usr"   },
 146         { "usr/lib",         "usr"    },
 147         { "usr/lib///",      "usr"    },
 148
 149 #if defined(__MINGW32__) || defined(_MSC_VER)
 150         /* --- win32 type paths --- */
 151         { "\\",              "\\"     },
 152         { "\\\\",            "\\\\"   },
 153         { "\\usr",           "\\"     },
 154         { "\\usr\\",         "\\"     },
 155         { "\\usr\\\\",       "\\"     },
 156         { "\\usr\\lib",      "\\usr"  },
 157         { "usr\\lib",        "usr"    },
 158         { "usr\\lib\\\\\\",  "usr"    },
 159         { "C:a",             "C:."    },
 160         { "C:/",             "C:/"    },
 161         { "C:///",           "C:/"    },
 162         { "C:/usr",          "C:/"    },
 163         { "C:/usr/",         "C:/"    },
 164         { "C:/usr//",        "C:/"    },
 165         { "C:/usr/lib",      "C:/usr" },
 166         { "C:usr/lib",       "C:usr"  },
 167         { "C:usr/lib///",    "C:usr"  },
 168         { "\\\\\\",          "\\"     },
 169         { "\\\\\\\\",        "\\"     },
 170         { "C:",              "C:.", "." },
 171 #endif
 172         { NULL,              NULL     }
 173 };
 174
 175 static int is_dotgitmodules(const char *path)
 176 {
 177         return is_hfs_dotgitmodules(path) || is_ntfs_dotgitmodules(path);
 178 }
 179
 180 static int cmp_by_st_size(const void *a, const void *b)
 181 {
 182         intptr_t x = (intptr_t)((struct string_list_item *)a)->util;
 183         intptr_t y = (intptr_t)((struct string_list_item *)b)->util;
 184
 185         return x > y ? -1 : (x < y ? +1 : 0);
 186 }
 187
 188 int cmd__path_utils(int argc, const char **argv)
 189 {
 190         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
 191                 char *buf = xmallocz(strlen(argv[2]));
 192                 int rv = normalize_path_copy(buf, argv[2]);
 193                 if (rv)
 194                         buf = "++failed++";
 195                 puts(buf);
 196                 return 0;
 197         }
 198
 199         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
 200                 while (argc > 2) {
 201                         puts(real_path(argv[2]));
 202                         argc--;
 203                         argv++;
 204                 }
 205                 return 0;
 206         }
 207
 208         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
 209                 while (argc > 2) {
 210                         puts(absolute_path(argv[2]));
 211                         argc--;
 212                         argv++;
 213                 }
 214                 return 0;
 215         }
 216
 217         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
 218                 int len;
 219                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
 220                 char *path = xstrdup(argv[2]);
 221
 222                 /*
 223                  * We have to normalize the arguments because under
 224                  * Windows, bash mangles arguments that look like
 225                  * absolute POSIX paths or colon-separate lists of
 226                  * absolute POSIX paths into DOS paths (e.g.,
 227                  * "/foo:/foo/bar" might be converted to
 228                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
 229                  * whereas longest_ancestor_length() requires paths
 230                  * that use forward slashes.
 231                  */
 232                 if (normalize_path_copy(path, path))
 233                         die("Path \"%s\" could not be normalized", argv[2]);
 234                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
 235                 filter_string_list(&ceiling_dirs, 0,
 236                                    normalize_ceiling_entry, NULL);
 237                 len = longest_ancestor_length(path, &ceiling_dirs);
 238                 string_list_clear(&ceiling_dirs, 0);
 239                 free(path);
 240                 printf("%d\n", len);
 241                 return 0;
 242         }
 243
 244         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
 245                 const char *prefix = argv[2];
 246                 int prefix_len = strlen(prefix);
 247                 int nongit_ok;
 248                 setup_git_directory_gently(&nongit_ok);
 249                 while (argc > 3) {
 250                         puts(prefix_path(prefix, prefix_len, argv[3]));
 251                         argc--;
 252                         argv++;
 253                 }
 254                 return 0;
 255         }
 256
 257         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
 258                 char *prefix = strip_path_suffix(argv[2], argv[3]);
 259                 printf("%s\n", prefix ? prefix : "(null)");
 260                 return 0;
 261         }
 262
 263         if (argc == 3 && !strcmp(argv[1], "print_path")) {
 264                 puts(argv[2]);
 265                 return 0;
 266         }
 267
 268         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
 269                 struct strbuf sb = STRBUF_INIT;
 270                 const char *in, *prefix, *rel;
 271                 normalize_argv_string(&in, argv[2]);
 272                 normalize_argv_string(&prefix, argv[3]);
 273                 rel = relative_path(in, prefix, &sb);
 274                 if (!rel)
 275                         puts("(null)");
 276                 else
 277                         puts(strlen(rel) > 0 ? rel : "(empty)");
 278                 strbuf_release(&sb);
 279                 return 0;
 280         }
 281
 282         if (argc == 2 && !strcmp(argv[1], "basename"))
 283                 return test_function(basename_data, posix_basename, argv[1]);
 284
 285         if (argc == 2 && !strcmp(argv[1], "dirname"))
 286                 return test_function(dirname_data, posix_dirname, argv[1]);
 287
 288         if (argc > 2 && !strcmp(argv[1], "is_dotgitmodules")) {
 289                 int res = 0, expect = 1, i;
 290                 for (i = 2; i < argc; i++)
 291                         if (!strcmp("--not", argv[i]))
 292                                 expect = !expect;
 293                         else if (expect != is_dotgitmodules(argv[i]))
 294                                 res = error("'%s' is %s.gitmodules", argv[i],
 295                                             expect ? "not " : "");
 296                         else
 297                                 fprintf(stderr, "ok: '%s' is %s.gitmodules\n",
 298                                         argv[i], expect ? "" : "not ");
 299                 return !!res;
 300         }
 301
 302         if (argc > 2 && !strcmp(argv[1], "file-size")) {
 303                 int res = 0, i;
 304                 struct stat st;
 305
 306                 for (i = 2; i < argc; i++)
 307                         if (stat(argv[i], &st))
 308                                 res = error_errno("Cannot stat '%s'", argv[i]);
 309                         else
 310                                 printf("%"PRIuMAX"\n", (uintmax_t)st.st_size);
 311                 return !!res;
 312         }
 313
 314         if (argc == 4 && !strcmp(argv[1], "skip-n-bytes")) {
 315                 int fd = open(argv[2], O_RDONLY), offset = atoi(argv[3]);
 316                 char buffer[65536];
 317
 318                 if (fd < 0)
 319                         die_errno("could not open '%s'", argv[2]);
 320                 if (lseek(fd, offset, SEEK_SET) < 0)
 321                         die_errno("could not skip %d bytes", offset);
 322                 for (;;) {
 323                         ssize_t count = read(fd, buffer, sizeof(buffer));
 324                         if (count < 0)
 325                                 die_errno("could not read '%s'", argv[2]);
 326                         if (!count)
 327                                 break;
 328                         if (write(1, buffer, count) < 0)
 329                                 die_errno("could not write to stdout");
 330                 }
 331                 close(fd);
 332                 return 0;
 333         }
 334
 335         if (argc > 5 && !strcmp(argv[1], "slice-tests")) {
 336                 int res = 0;
 337                 long offset, stride, i;
 338                 struct string_list list = STRING_LIST_INIT_NODUP;
 339                 struct stat st;
 340
 341                 offset = strtol(argv[2], NULL, 10);
 342                 stride = strtol(argv[3], NULL, 10);
 343                 if (stride < 1)
 344                         stride = 1;
 345                 for (i = 4; i < argc; i++)
 346                         if (stat(argv[i], &st))
 347                                 res = error_errno("Cannot stat '%s'", argv[i]);
 348                         else
 349                                 string_list_append(&list, argv[i])->util =
 350                                         (void *)(intptr_t)st.st_size;
 351                 QSORT(list.items, list.nr, cmp_by_st_size);
 352                 for (i = offset; i < list.nr; i+= stride)
 353                         printf("%s\n", list.items[i].string);
 354
 355                 return !!res;
 356         }
 357
 358         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
 359                 argv[1] ? argv[1] : "(there was none)");
 360         return 1;
 361 }