builtin / check-attr.con commit Merge branch 'lc/filter-branch-too-many-refs' (f52752d)
   1#include "builtin.h"
   2#include "cache.h"
   3#include "attr.h"
   4#include "quote.h"
   5#include "parse-options.h"
   6
   7static int all_attrs;
   8static int cached_attrs;
   9static int stdin_paths;
  10static const char * const check_attr_usage[] = {
  11N_("git check-attr [-a | --all | attr...] [--] pathname..."),
  12N_("git check-attr --stdin [-z] [-a | --all | attr...] < <list-of-paths>"),
  13NULL
  14};
  15
  16static int nul_term_line;
  17
  18static const struct option check_attr_options[] = {
  19        OPT_BOOL('a', "all", &all_attrs, N_("report all attributes set on file")),
  20        OPT_BOOL(0,  "cached", &cached_attrs, N_("use .gitattributes only from the index")),
  21        OPT_BOOL(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
  22        OPT_BOOL('z', NULL, &nul_term_line,
  23                 N_("terminate input and output records by a NUL character")),
  24        OPT_END()
  25};
  26
  27static void output_attr(int cnt, struct git_attr_check *check,
  28        const char *file)
  29{
  30        int j;
  31        for (j = 0; j < cnt; j++) {
  32                const char *value = check[j].value;
  33
  34                if (ATTR_TRUE(value))
  35                        value = "set";
  36                else if (ATTR_FALSE(value))
  37                        value = "unset";
  38                else if (ATTR_UNSET(value))
  39                        value = "unspecified";
  40
  41                if (nul_term_line) {
  42                        printf("%s%c" /* path */
  43                               "%s%c" /* attrname */
  44                               "%s%c" /* attrvalue */,
  45                               file, 0, git_attr_name(check[j].attr), 0, value, 0);
  46                } else {
  47                        quote_c_style(file, NULL, stdout, 0);
  48                        printf(": %s: %s\n", git_attr_name(check[j].attr), value);
  49                }
  50
  51        }
  52}
  53
  54static void check_attr(const char *prefix, int cnt,
  55        struct git_attr_check *check, const char *file)
  56{
  57        char *full_path =
  58                prefix_path(prefix, prefix ? strlen(prefix) : 0, file);
  59        if (check != NULL) {
  60                if (git_check_attr(full_path, cnt, check))
  61                        die("git_check_attr died");
  62                output_attr(cnt, check, file);
  63        } else {
  64                if (git_all_attrs(full_path, &cnt, &check))
  65                        die("git_all_attrs died");
  66                output_attr(cnt, check, file);
  67                free(check);
  68        }
  69        free(full_path);
  70}
  71
  72static void check_attr_stdin_paths(const char *prefix, int cnt,
  73        struct git_attr_check *check)
  74{
  75        struct strbuf buf, nbuf;
  76        int line_termination = nul_term_line ? 0 : '\n';
  77
  78        strbuf_init(&buf, 0);
  79        strbuf_init(&nbuf, 0);
  80        while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
  81                if (line_termination && buf.buf[0] == '"') {
  82                        strbuf_reset(&nbuf);
  83                        if (unquote_c_style(&nbuf, buf.buf, NULL))
  84                                die("line is badly quoted");
  85                        strbuf_swap(&buf, &nbuf);
  86                }
  87                check_attr(prefix, cnt, check, buf.buf);
  88                maybe_flush_or_die(stdout, "attribute to stdout");
  89        }
  90        strbuf_release(&buf);
  91        strbuf_release(&nbuf);
  92}
  93
  94static NORETURN void error_with_usage(const char *msg)
  95{
  96        error("%s", msg);
  97        usage_with_options(check_attr_usage, check_attr_options);
  98}
  99
 100int cmd_check_attr(int argc, const char **argv, const char *prefix)
 101{
 102        struct git_attr_check *check;
 103        int cnt, i, doubledash, filei;
 104
 105        git_config(git_default_config, NULL);
 106
 107        argc = parse_options(argc, argv, prefix, check_attr_options,
 108                             check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
 109
 110        if (read_cache() < 0) {
 111                die("invalid cache");
 112        }
 113
 114        if (cached_attrs)
 115                git_attr_set_direction(GIT_ATTR_INDEX, NULL);
 116
 117        doubledash = -1;
 118        for (i = 0; doubledash < 0 && i < argc; i++) {
 119                if (!strcmp(argv[i], "--"))
 120                        doubledash = i;
 121        }
 122
 123        /* Process --all and/or attribute arguments: */
 124        if (all_attrs) {
 125                if (doubledash >= 1)
 126                        error_with_usage("Attributes and --all both specified");
 127
 128                cnt = 0;
 129                filei = doubledash + 1;
 130        } else if (doubledash == 0) {
 131                error_with_usage("No attribute specified");
 132        } else if (doubledash < 0) {
 133                if (!argc)
 134                        error_with_usage("No attribute specified");
 135
 136                if (stdin_paths) {
 137                        /* Treat all arguments as attribute names. */
 138                        cnt = argc;
 139                        filei = argc;
 140                } else {
 141                        /* Treat exactly one argument as an attribute name. */
 142                        cnt = 1;
 143                        filei = 1;
 144                }
 145        } else {
 146                cnt = doubledash;
 147                filei = doubledash + 1;
 148        }
 149
 150        /* Check file argument(s): */
 151        if (stdin_paths) {
 152                if (filei < argc)
 153                        error_with_usage("Can't specify files with --stdin");
 154        } else {
 155                if (filei >= argc)
 156                        error_with_usage("No file specified");
 157        }
 158
 159        if (all_attrs) {
 160                check = NULL;
 161        } else {
 162                check = xcalloc(cnt, sizeof(*check));
 163                for (i = 0; i < cnt; i++) {
 164                        const char *name;
 165                        struct git_attr *a;
 166                        name = argv[i];
 167                        a = git_attr(name);
 168                        if (!a)
 169                                return error("%s: not a valid attribute name",
 170                                        name);
 171                        check[i].attr = a;
 172                }
 173        }
 174
 175        if (stdin_paths)
 176                check_attr_stdin_paths(prefix, cnt, check);
 177        else {
 178                for (i = filei; i < argc; i++)
 179                        check_attr(prefix, cnt, check, argv[i]);
 180                maybe_flush_or_die(stdout, "attribute to stdout");
 181        }
 182        return 0;
 183}