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

   1 /* Trailing whitespace test.  Almost embarrassing, but trivial. */
   2 #include <tools/ccanlint/ccanlint.h>
   3 #include <ccan/talloc/talloc.h>
   4 #include <ccan/foreach/foreach.h>
   5 #include <ccan/str/str.h>
   6
   7 /* FIXME: only print full analysis if verbose >= 2.  */
   8 static char *get_trailing_whitespace(const char *line)
   9 {
  10         const char *e = strchr(line, 0);
  11         while (e>line && (e[-1]==' ' || e[-1]=='\t'))
  12                 e--;
  13         if (*e == 0)
  14                 return NULL; //there were no trailing spaces
  15         if (e == line)
  16                 return NULL; //the line only consists of spaces
  17
  18         if (strlen(line) > 20)
  19                 return talloc_asprintf(line, "...'%s'",
  20                                        line + strlen(line) - 20);
  21         return talloc_asprintf(line, "'%s'", line);
  22 }
  23
  24 static void check_trailing_whitespace(struct manifest *m,
  25                                       bool keep,
  26                                       unsigned int *timeleft,
  27                                       struct score *score)
  28 {
  29         struct list_head *list;
  30         struct ccan_file *f;
  31         unsigned int i;
  32
  33         foreach_ptr(list, &m->c_files, &m->h_files) {
  34                 list_for_each(list, f, list) {
  35                         char **lines = get_ccan_file_lines(f);
  36                         for (i = 0; i < f->num_lines; i++) {
  37                                 char *err = get_trailing_whitespace(lines[i]);
  38                                 if (err)
  39                                         score_file_error(score, f, i+1,
  40                                                          "%s", err);
  41                         }
  42                 }
  43         }
  44         if (!score->error) {
  45                 score->pass = true;
  46                 score->score = score->total;
  47         }
  48 }
  49
  50 struct ccanlint no_trailing_whitespace = {
  51         .key = "no_trailing_whitespace",
  52         .name = "Module's source code has no trailing whitespace",
  53         .check = check_trailing_whitespace,
  54         .needs = ""
  55 };
  56
  57
  58 REGISTER_TEST(no_trailing_whitespace);