git.ozlabs.org Git - ccan/blob - tools/ccanlint/ccanlint.c

   1 /*
   2  * ccanlint: assorted checks and advice for a ccan package
   3  * Copyright (C) 2008 Rusty Russell, Idris Soule
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the Free
   7  * Software Foundation; either version 2 of the License, or (at your option)
   8  * any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 51
  17  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 #include "ccanlint.h"
  20 #include <unistd.h>
  21 #include <getopt.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <err.h>
  27 #include <ctype.h>
  28 #include <ccan/talloc/talloc.h>
  29
  30 static unsigned int verbose = 0;
  31 static LIST_HEAD(compulsory_tests);
  32 static LIST_HEAD(normal_tests);
  33 static LIST_HEAD(finished_tests);
  34 bool safe_mode = false;
  35
  36 static void usage(const char *name)
  37 {
  38         fprintf(stderr, "Usage: %s [-s] [-n] [-v] [-d <dirname>]\n"
  39                 "   -v: verbose mode\n"
  40                 "   -s: simply give one line per FAIL and total score\n"
  41                 "   -d: use this directory instead of the current one\n"
  42                 "   -n: do not compile anything\n",
  43                 name);
  44         exit(1);
  45 }
  46
  47 static void indent_print(const char *string)
  48 {
  49         while (*string) {
  50                 unsigned int line = strcspn(string, "\n");
  51                 printf("\t%.*s", line, string);
  52                 if (string[line] == '\n') {
  53                         printf("\n");
  54                         line++;
  55                 }
  56                 string += line;
  57         }
  58 }
  59
  60 bool ask(const char *question)
  61 {
  62         char reply[2];
  63
  64         printf("%s ", question);
  65         fflush(stdout);
  66
  67         return fgets(reply, sizeof(reply), stdin) != NULL
  68                 && toupper(reply[0]) == 'Y';
  69 }
  70
  71 static bool run_test(struct ccanlint *i,
  72                      bool summary,
  73                      unsigned int *score,
  74                      unsigned int *total_score,
  75                      struct manifest *m)
  76 {
  77         void *result;
  78         unsigned int this_score;
  79         const struct dependent *d;
  80
  81         if (i->total_score)
  82                 *total_score += i->total_score;
  83         //one less test to run through
  84         list_for_each(&i->dependencies, d, node)
  85                 d->dependent->num_depends--;
  86         result = i->check(m);
  87         if (!result) {
  88                 if (verbose)
  89                         printf("  %s: OK\n", i->name);
  90                 if (i->total_score)
  91                         *score += i->total_score;
  92
  93                 list_del(&i->list);
  94                 list_add_tail(&finished_tests, &i->list);
  95                 return true;
  96         }
  97
  98         if (i->score)
  99                 this_score = i->score(m, result);
 100         else
 101                 this_score = 0;
 102
 103         list_del(&i->list);
 104         list_add_tail(&finished_tests, &i->list);
 105
 106         *score += this_score;
 107         if (summary) {
 108                 printf("%s FAILED (%u/%u)\n",
 109                        i->name, this_score, i->total_score);
 110
 111                 if (verbose)
 112                         indent_print(i->describe(m, result));
 113         } else {
 114                 printf("%s\n", i->describe(m, result));
 115
 116                 if (i->handle)
 117                         i->handle(m, result);
 118         }
 119
 120         /* Skip any tests which depend on this one. */
 121         list_for_each(&i->dependencies, d, node) {
 122                 list_del(&d->dependent->list);
 123                 list_add(&finished_tests, &d->dependent->list);
 124                 if (verbose)
 125                         printf("  -> skipping %s\n", d->dependent->name);
 126                 *total_score += d->dependent->total_score;
 127         }
 128
 129         return false;
 130 }
 131
 132 static void register_test(struct ccanlint *test, ...)
 133 {
 134         va_list ap;
 135         struct ccanlint *depends;
 136         struct dependent *dchild;
 137
 138         if (!test->total_score)
 139                 list_add(&compulsory_tests, &test->list);
 140         else
 141                 list_add(&normal_tests, &test->list);
 142
 143         va_start(ap, test);
 144         /* Careful: we might have been initialized by a dependent. */
 145         if (test->dependencies.n.next == NULL)
 146                 list_head_init(&test->dependencies);
 147
 148         //dependent(s) args (if any), last one is NULL
 149         while ((depends = va_arg(ap, struct ccanlint *)) != NULL) {
 150                 dchild = malloc(sizeof(*dchild));
 151                 dchild->dependent = test;
 152                 /* The thing we depend on might not be initialized yet! */
 153                 if (depends->dependencies.n.next == NULL)
 154                         list_head_init(&depends->dependencies);
 155                 list_add_tail(&depends->dependencies, &dchild->node);
 156                 test->num_depends++;
 157         }
 158         va_end(ap);
 159 }
 160
 161 /**
 162  * get_next_test - retrieves the next test to be processed
 163  **/
 164 static inline struct ccanlint *get_next_test(struct list_head *test)
 165 {
 166         struct ccanlint *i;
 167
 168         if (list_empty(test))
 169                 return NULL;
 170
 171         list_for_each(test, i, list) {
 172                 if (i->num_depends == 0)
 173                         return i;
 174         }
 175         errx(1, "Can't make process; test dependency cycle");
 176 }
 177
 178 static void init_tests(void)
 179 {
 180         const struct ccanlint *i;
 181
 182 #undef REGISTER_TEST
 183 #define REGISTER_TEST(name, ...) register_test(&name, __VA_ARGS__)
 184 #include "generated-init-tests"
 185
 186         if (!verbose)
 187                 return;
 188
 189         printf("\nCompulsory Tests\n");
 190         list_for_each(&compulsory_tests, i, list) {
 191                 printf("%s depends on %u others\n", i->name, i->num_depends);
 192                 if (!list_empty(&i->dependencies)) {
 193                         const struct dependent *d;
 194                         printf("These depend on us:\n");
 195                         list_for_each(&i->dependencies, d, node)
 196                                 printf("\t%s\n", d->dependent->name);
 197                 }
 198         }
 199
 200         printf("\nNormal Tests\n");
 201         list_for_each(&normal_tests, i, list) {
 202                 printf("%s depends on %u others\n", i->name, i->num_depends);
 203                 if (!list_empty(&i->dependencies)) {
 204                         const struct dependent *d;
 205                         printf("These depend on us:\n");
 206                         list_for_each(&i->dependencies, d, node)
 207                                 printf("\t%s\n", d->dependent->name);
 208                 }
 209         }
 210 }
 211
 212 int main(int argc, char *argv[])
 213 {
 214         int c;
 215         bool summary = false;
 216         unsigned int score, total_score;
 217         struct manifest *m;
 218         struct ccanlint *i;
 219
 220         /* I'd love to use long options, but that's not standard. */
 221         /* FIXME: getopt_long ccan package? */
 222         while ((c = getopt(argc, argv, "sd:vn")) != -1) {
 223                 switch (c) {
 224                 case 'd':
 225                         if (chdir(optarg) != 0)
 226                                 err(1, "Changing into directory '%s'", optarg);
 227                         break;
 228                 case 's':
 229                         summary = true;
 230                         break;
 231                 case 'v':
 232                         verbose++;
 233                         break;
 234                 case 'n':
 235                         safe_mode = true;
 236                         break;
 237                 default:
 238                         usage(argv[0]);
 239                 }
 240         }
 241
 242         if (optind < argc)
 243                 usage(argv[0]);
 244
 245         m = get_manifest(talloc_autofree_context());
 246
 247         init_tests();
 248
 249         /* If you don't pass the compulsory tests, you don't even get a score */
 250         if (verbose)
 251                 printf("Compulsory tests:\n");
 252
 253         while ((i = get_next_test(&compulsory_tests)) != NULL) {
 254                 if (!run_test(i, summary, &score, &total_score, m))
 255                         exit(1);
 256         }
 257
 258         if (verbose)
 259                 printf("\nNormal tests:\n");
 260         score = total_score = 0;
 261         while ((i = get_next_test(&normal_tests)) != NULL) {
 262                 if (i->total_score)
 263                         run_test(i, summary, &score, &total_score, m);
 264         }
 265         printf("Total score: %u/%u\n", score, total_score);
 266         return 0;
 267 }