builtin/check-attr.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "attr.h"
   4 #include "environment.h"
   5 #include "gettext.h"
   6 #include "object-name.h"
   7 #include "quote.h"
   8 #include "repository.h"
   9 #include "setup.h"
  10 #include "parse-options.h"
  11 #include "write-or-die.h"
  12
  13 static int all_attrs;
  14 static int cached_attrs;
  15 static int stdin_paths;
  16 static char *source;
  17 static const char * const check_attr_usage[] = {
  18 N_("git check-attr [--source <tree-ish>] [-a | --all | <attr>...] [--] <pathname>..."),
  19 N_("git check-attr --stdin [-z] [--source <tree-ish>] [-a | --all | <attr>...]"),
  20 NULL
  21 };
  22
  23 static int nul_term_line;
  24
  25 static const struct option check_attr_options[] = {
  26         OPT_BOOL('a', "all", &all_attrs, N_("report all attributes set on file")),
  27         OPT_BOOL(0,  "cached", &cached_attrs, N_("use .gitattributes only from the index")),
  28         OPT_BOOL(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
  29         OPT_BOOL('z', NULL, &nul_term_line,
  30                  N_("terminate input and output records by a NUL character")),
  31         OPT_STRING(0, "source", &source, N_("<tree-ish>"), N_("which tree-ish to check attributes at")),
  32         OPT_END()
  33 };
  34
  35 static void output_attr(struct attr_check *check, const char *file)
  36 {
  37         int j;
  38         int cnt = check->nr;
  39
  40         for (j = 0; j < cnt; j++) {
  41                 const char *value = check->items[j].value;
  42
  43                 if (ATTR_TRUE(value))
  44                         value = "set";
  45                 else if (ATTR_FALSE(value))
  46                         value = "unset";
  47                 else if (ATTR_UNSET(value))
  48                         value = "unspecified";
  49
  50                 if (nul_term_line) {
  51                         printf("%s%c" /* path */
  52                                "%s%c" /* attrname */
  53                                "%s%c" /* attrvalue */,
  54                                file, 0,
  55                                git_attr_name(check->items[j].attr), 0, value, 0);
  56                 } else {
  57                         quote_c_style(file, NULL, stdout, 0);
  58                         printf(": %s: %s\n",
  59                                git_attr_name(check->items[j].attr), value);
  60                 }
  61         }
  62 }
  63
  64 static void check_attr(const char *prefix, struct attr_check *check,
  65                        int collect_all,
  66                        const char *file)
  67
  68 {
  69         char *full_path =
  70                 prefix_path(prefix, prefix ? strlen(prefix) : 0, file);
  71
  72         if (collect_all) {
  73                 git_all_attrs(the_repository->index, full_path, check);
  74         } else {
  75                 git_check_attr(the_repository->index, full_path, check);
  76         }
  77         output_attr(check, file);
  78
  79         free(full_path);
  80 }
  81
  82 static void check_attr_stdin_paths(const char *prefix, struct attr_check *check,
  83                                    int collect_all)
  84 {
  85         struct strbuf buf = STRBUF_INIT;
  86         struct strbuf unquoted = STRBUF_INIT;
  87         strbuf_getline_fn getline_fn;
  88
  89         getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
  90         while (getline_fn(&buf, stdin) != EOF) {
  91                 if (!nul_term_line && buf.buf[0] == '"') {
  92                         strbuf_reset(&unquoted);
  93                         if (unquote_c_style(&unquoted, buf.buf, NULL))
  94                                 die("line is badly quoted");
  95                         strbuf_swap(&buf, &unquoted);
  96                 }
  97                 check_attr(prefix, check, collect_all, buf.buf);
  98                 maybe_flush_or_die(stdout, "attribute to stdout");
  99         }
 100         strbuf_release(&buf);
 101         strbuf_release(&unquoted);
 102 }
 103
 104 static NORETURN void error_with_usage(const char *msg)
 105 {
 106         error("%s", msg);
 107         usage_with_options(check_attr_usage, check_attr_options);
 108 }
 109
 110 int cmd_check_attr(int argc, const char **argv, const char *prefix)
 111 {
 112         struct attr_check *check;
 113         struct object_id initialized_oid;
 114         int cnt, i, doubledash, filei;
 115
 116         if (!is_bare_repository())
 117                 setup_work_tree();
 118
 119         git_config(git_default_config, NULL);
 120
 121         argc = parse_options(argc, argv, prefix, check_attr_options,
 122                              check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
 123
 124         prepare_repo_settings(the_repository);
 125         the_repository->settings.command_requires_full_index = 0;
 126
 127         if (repo_read_index(the_repository) < 0) {
 128                 die("invalid cache");
 129         }
 130
 131         if (cached_attrs)
 132                 git_attr_set_direction(GIT_ATTR_INDEX);
 133
 134         doubledash = -1;
 135         for (i = 0; doubledash < 0 && i < argc; i++) {
 136                 if (!strcmp(argv[i], "--"))
 137                         doubledash = i;
 138         }
 139
 140         /* Process --all and/or attribute arguments: */
 141         if (all_attrs) {
 142                 if (doubledash >= 1)
 143                         error_with_usage("Attributes and --all both specified");
 144
 145                 cnt = 0;
 146                 filei = doubledash + 1;
 147         } else if (doubledash == 0) {
 148                 error_with_usage("No attribute specified");
 149         } else if (doubledash < 0) {
 150                 if (!argc)
 151                         error_with_usage("No attribute specified");
 152
 153                 if (stdin_paths) {
 154                         /* Treat all arguments as attribute names. */
 155                         cnt = argc;
 156                         filei = argc;
 157                 } else {
 158                         /* Treat exactly one argument as an attribute name. */
 159                         cnt = 1;
 160                         filei = 1;
 161                 }
 162         } else {
 163                 cnt = doubledash;
 164                 filei = doubledash + 1;
 165         }
 166
 167         /* Check file argument(s): */
 168         if (stdin_paths) {
 169                 if (filei < argc)
 170                         error_with_usage("Can't specify files with --stdin");
 171         } else {
 172                 if (filei >= argc)
 173                         error_with_usage("No file specified");
 174         }
 175
 176         check = attr_check_alloc();
 177         if (!all_attrs) {
 178                 for (i = 0; i < cnt; i++) {
 179                         const struct git_attr *a = git_attr(argv[i]);
 180
 181                         if (!a)
 182                                 return error("%s: not a valid attribute name",
 183                                              argv[i]);
 184                         attr_check_append(check, a);
 185                 }
 186         }
 187
 188         if (source) {
 189                 if (repo_get_oid_tree(the_repository, source, &initialized_oid))
 190                         die("%s: not a valid tree-ish source", source);
 191                 set_git_attr_source(source);
 192         }
 193
 194         if (stdin_paths)
 195                 check_attr_stdin_paths(prefix, check, all_attrs);
 196         else {
 197                 for (i = filei; i < argc; i++)
 198                         check_attr(prefix, check, all_attrs, argv[i]);
 199                 maybe_flush_or_die(stdout, "attribute to stdout");
 200         }
 201
 202         attr_check_free(check);
 203         return 0;
 204 }