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

   1 #include "ccanlint.h"
   2 #include <ccan/talloc/talloc.h>
   3 #include <ccan/str/str.h>
   4 #include <ccan/str_talloc/str_talloc.h>
   5 #include <ccan/grab_file/grab_file.h>
   6 #include <ccan/noerr/noerr.h>
   7 #include <unistd.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <fcntl.h>
  11 #include <err.h>
  12 #include <errno.h>
  13 #include <dirent.h>
  14
  15 char **get_ccan_file_lines(struct ccan_file *f)
  16 {
  17         if (!f->lines) {
  18                 char *buffer = grab_file(f, f->name, NULL);
  19                 if (!buffer)
  20                         err(1, "Getting file %s", f->name);
  21                 f->lines = strsplit(f, buffer, "\n", &f->num_lines);
  22         }
  23         return f->lines;
  24 }
  25
  26 struct list_head *get_ccan_file_docs(struct ccan_file *f)
  27 {
  28         if (!f->doc_sections) {
  29                 get_ccan_file_lines(f);
  30                 f->doc_sections = extract_doc_sections(f->lines, f->num_lines);
  31         }
  32         return f->doc_sections;
  33 }
  34
  35 static void add_files(struct manifest *m, const char *dir)
  36 {
  37         DIR *d;
  38         struct dirent *ent;
  39
  40         if (dir[0])
  41                 d = opendir(dir);
  42         else
  43                 d = opendir(".");
  44         if (!d)
  45                 err(1, "Opening directory %s", dir[0] ? dir : ".");
  46
  47         while ((ent = readdir(d)) != NULL) {
  48                 struct stat st;
  49                 struct ccan_file *f;
  50                 struct list_head *dest;
  51                 bool is_c_src;
  52
  53                 if (ent->d_name[0] == '.')
  54                         continue;
  55
  56                 f = talloc(m, struct ccan_file);
  57                 f->lines = NULL;
  58                 f->doc_sections = NULL;
  59                 f->name = talloc_asprintf(f, "%s%s", dir, ent->d_name);
  60                 if (lstat(f->name, &st) != 0)
  61                         err(1, "lstat %s", f->name);
  62
  63                 if (S_ISDIR(st.st_mode)) {
  64                         f->name = talloc_append_string(f->name, "/");
  65                         add_files(m, f->name);
  66                         continue;
  67                 }
  68                 if (!S_ISREG(st.st_mode)) {
  69                         talloc_free(f);
  70                         continue;
  71                 }
  72
  73                 if (streq(f->name, "_info.c")) {
  74                         m->info_file = f;
  75                         continue;
  76                 }
  77
  78                 is_c_src = strends(f->name, ".c");
  79                 if (!is_c_src && !strends(f->name, ".h"))
  80                         dest = &m->other_files;
  81                 else if (!strchr(f->name, '/')) {
  82                         if (is_c_src)
  83                                 dest = &m->c_files;
  84                         else
  85                                 dest = &m->h_files;
  86                 } else if (strstarts(f->name, "test/")) {
  87                         if (is_c_src) {
  88                                 if (strstarts(f->name, "test/api"))
  89                                         dest = &m->api_tests;
  90                                 else if (strstarts(f->name, "test/run"))
  91                                         dest = &m->run_tests;
  92                                 else if (strstarts(f->name, "test/compile_ok"))
  93                                         dest = &m->compile_ok_tests;
  94                                 else if (strstarts(f->name, "test/compile_fail"))
  95                                         dest = &m->compile_fail_tests;
  96                                 else
  97                                         dest = &m->other_test_files;
  98                         } else
  99                                 dest = &m->other_test_files;
 100                 } else
 101                         dest = &m->other_files;
 102
 103                 list_add(dest, &f->list);
 104         }
 105         closedir(d);
 106 }
 107
 108 char *report_on_lines(struct list_head *files,
 109                       char *(*report)(const char *),
 110                       char *sofar)
 111 {
 112         struct ccan_file *f;
 113
 114         list_for_each(files, f, list) {
 115                 unsigned int i;
 116                 char **lines = get_ccan_file_lines(f);
 117
 118                 for (i = 0; i < f->num_lines; i++) {
 119                         char *r = report(lines[i]);
 120                         if (!r)
 121                                 continue;
 122
 123                         sofar = talloc_asprintf_append(sofar,
 124                                                        "%s:%u:%s\n",
 125                                                        f->name, i+1, r);
 126                         talloc_free(r);
 127                 }
 128         }
 129         return sofar;
 130 }
 131
 132 struct manifest *get_manifest(void)
 133 {
 134         struct manifest *m = talloc(NULL, struct manifest);
 135         unsigned int len;
 136
 137         m->info_file = NULL;
 138         list_head_init(&m->c_files);
 139         list_head_init(&m->h_files);
 140         list_head_init(&m->api_tests);
 141         list_head_init(&m->run_tests);
 142         list_head_init(&m->compile_ok_tests);
 143         list_head_init(&m->compile_fail_tests);
 144         list_head_init(&m->other_test_files);
 145         list_head_init(&m->other_files);
 146
 147         /* *This* is why people hate C. */
 148         len = 32;
 149         m->basename = talloc_array(m, char, len);
 150         while (!getcwd(m->basename, len)) {
 151                 if (errno != ERANGE)
 152                         err(1, "Getting current directory");
 153                 m->basename = talloc_realloc(m, m->basename, char, len *= 2);
 154         }
 155
 156         len = strlen(m->basename);
 157         while (len && m->basename[len-1] == '/')
 158                 m->basename[--len] = '\0';
 159
 160         m->basename = strrchr(m->basename, '/');
 161         if (!m->basename)
 162                 errx(1, "I don't expect to be run from the root directory");
 163         m->basename++;
 164
 165         add_files(m, "");
 166         return m;
 167 }