First primitive cut of ccanlint

[ccan] / ccan_tools / ccanlint / file_analysis.c

diff --git a/ccan_tools/ccanlint/file_analysis.c b/ccan_tools/ccanlint/file_analysis.c
new file mode 100644 (file)
index 0000000..1341e57
--- /dev/null
+++ b/ccan_tools/ccanlint/file_analysis.c
@@ -0,0 +1,149 @@
+#include "ccanlint.h"
+#include "get_file_lines.h"
+#include <talloc/talloc.h>
+#include <string/string.h>
+#include <noerr/noerr.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <err.h>
+#include <errno.h>
+#include <dirent.h>
+
+char **get_ccan_file_lines(struct ccan_file *f)
+{
+       if (!f->lines)
+               f->lines = get_file_lines(f, f->name, &f->num_lines);
+       return f->lines;
+}
+
+static void add_files(struct manifest *m, const char *dir)
+{
+       DIR *d;
+       struct dirent *ent;
+
+       if (dir[0])
+               d = opendir(dir);
+       else
+               d = opendir(".");
+       if (!d)
+               err(1, "Opening directory %s", dir[0] ? dir : ".");
+
+       while ((ent = readdir(d)) != NULL) {
+               struct stat st;
+               struct ccan_file *f;
+               struct list_head *dest;
+               bool is_c_src;
+
+               if (ent->d_name[0] == '.')
+                       continue;
+
+               f = talloc(m, struct ccan_file);
+               f->lines = NULL;
+               f->name = talloc_asprintf(f, "%s%s", dir, ent->d_name);
+               if (lstat(f->name, &st) != 0)
+                       err(1, "lstat %s", f->name);
+
+               if (S_ISDIR(st.st_mode)) {
+                       f->name = talloc_append_string(f->name, "/");
+                       add_files(m, f->name);
+                       continue;
+               }
+               if (!S_ISREG(st.st_mode)) {
+                       talloc_free(f);
+                       continue;
+               }
+
+               if (streq(f->name, "_info.c")) {
+                       m->info_file = f;
+                       continue;
+               }
+
+               is_c_src = strends(f->name, ".c");
+               if (!is_c_src && !strends(f->name, ".h"))
+                       dest = &m->other_files;
+               else if (!strchr(f->name, '/')) {
+                       if (is_c_src)
+                               dest = &m->c_files;
+                       else
+                               dest = &m->h_files;
+               } else if (strstarts(f->name, "test/")) {
+                       if (is_c_src) {
+                               if (strstarts(f->name, "test/run"))
+                                       dest = &m->run_tests;
+                               else if (strstarts(f->name, "test/compile_ok"))
+                                       dest = &m->compile_ok_tests;
+                               else if (strstarts(f->name, "test/compile_fail"))
+                                       dest = &m->compile_fail_tests;
+                               else
+                                       dest = &m->other_test_files;
+                       } else
+                               dest = &m->other_test_files;
+               } else
+                       dest = &m->other_files;
+
+               list_add(dest, &f->list);
+       }
+       closedir(d);
+}
+
+char *report_on_lines(struct list_head *files,
+                     char *(*report)(const char *),
+                     char *sofar)
+{
+       struct ccan_file *f;
+
+       list_for_each(files, f, list) {
+               unsigned int i;
+               char **lines = get_ccan_file_lines(f);
+
+               for (i = 0; i < f->num_lines; i++) {
+                       char *r = report(lines[i]);
+                       if (!r)
+                               continue;
+
+                       sofar = talloc_asprintf_append(sofar,
+                                                      "%s:%u:%s\n",
+                                                      f->name, i+1, r);
+                       talloc_free(r);
+               }
+       }
+       return sofar;
+}
+
+struct manifest *get_manifest(void)
+{
+       struct manifest *m = talloc(NULL, struct manifest);
+       unsigned int len;
+
+       m->info_file = NULL;
+       list_head_init(&m->c_files);
+       list_head_init(&m->h_files);
+       list_head_init(&m->run_tests);
+       list_head_init(&m->compile_ok_tests);
+       list_head_init(&m->compile_fail_tests);
+       list_head_init(&m->other_test_files);
+       list_head_init(&m->other_files);
+
+       /* *This* is why people hate C. */
+       len = 32;
+       m->basename = talloc_array(m, char, len);
+       while (!getcwd(m->basename, len)) {
+               if (errno != ERANGE)
+                       err(1, "Getting current directory");
+               m->basename = talloc_realloc(m, m->basename, char, len *= 2);
+       }
+
+       len = strlen(m->basename);
+       while (len && m->basename[len-1] == '/')
+               m->basename[--len] = '\0';
+
+       m->basename = strrchr(m->basename, '/');
+       if (!m->basename)
+               errx(1, "I don't expect to be run from the root directory");
+       m->basename++;
+
+       add_files(m, "");
+       return m;
+}