builtin/check-attr.c

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