Andrew's git - gitweb.git/blob - builtin-check-attr.c

   1#include "builtin.h"
   2#include "cache.h"
   3#include "attr.h"
   4#include "quote.h"
   5#include "parse-options.h"
   6
   7static int stdin_paths;
   8static const char * const check_attr_usage[] = {
   9"git check-attr attr... [--] pathname...",
  10"git check-attr --stdin attr... < <list-of-paths>",
  11NULL
  12};
  13
  14static int null_term_line;
  15
  16static const struct option check_attr_options[] = {
  17        OPT_BOOLEAN(0 , "stdin", &stdin_paths, "read file names from stdin"),
  18        OPT_BOOLEAN('z', NULL, &null_term_line,
  19                "input paths are terminated by a null character"),
  20        OPT_END()
  21};
  22
  23static void check_attr(int cnt, struct git_attr_check *check,
  24        const char** name, const char *file)
  25{
  26        int j;
  27        if (git_checkattr(file, cnt, check))
  28                die("git_checkattr died");
  29        for (j = 0; j < cnt; j++) {
  30                const char *value = check[j].value;
  31
  32                if (ATTR_TRUE(value))
  33                        value = "set";
  34                else if (ATTR_FALSE(value))
  35                        value = "unset";
  36                else if (ATTR_UNSET(value))
  37                        value = "unspecified";
  38
  39                quote_c_style(file, NULL, stdout, 0);
  40                printf(": %s: %s\n", name[j], value);
  41        }
  42}
  43
  44static void check_attr_stdin_paths(int cnt, struct git_attr_check *check,
  45        const char** name)
  46{
  47        struct strbuf buf, nbuf;
  48        int line_termination = null_term_line ? 0 : '\n';
  49
  50        strbuf_init(&buf, 0);
  51        strbuf_init(&nbuf, 0);
  52        while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
  53                if (line_termination && buf.buf[0] == '"') {
  54                        strbuf_reset(&nbuf);
  55                        if (unquote_c_style(&nbuf, buf.buf, NULL))
  56                                die("line is badly quoted");
  57                        strbuf_swap(&buf, &nbuf);
  58                }
  59                check_attr(cnt, check, name, buf.buf);
  60                maybe_flush_or_die(stdout, "attribute to stdout");
  61        }
  62        strbuf_release(&buf);
  63        strbuf_release(&nbuf);
  64}
  65
  66int cmd_check_attr(int argc, const char **argv, const char *prefix)
  67{
  68        struct git_attr_check *check;
  69        int cnt, i, doubledash;
  70        const char *errstr = NULL;
  71
  72        argc = parse_options(argc, argv, prefix, check_attr_options,
  73                             check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
  74        if (!argc)
  75                usage_with_options(check_attr_usage, check_attr_options);
  76
  77        if (read_cache() < 0) {
  78                die("invalid cache");
  79        }
  80
  81        doubledash = -1;
  82        for (i = 0; doubledash < 0 && i < argc; i++) {
  83                if (!strcmp(argv[i], "--"))
  84                        doubledash = i;
  85        }
  86
  87        /* If there is no double dash, we handle only one attribute */
  88        if (doubledash < 0) {
  89                cnt = 1;
  90                doubledash = 0;
  91        } else
  92                cnt = doubledash;
  93        doubledash++;
  94
  95        if (cnt <= 0)
  96                errstr = "No attribute specified";
  97        else if (stdin_paths && doubledash < argc)
  98                errstr = "Can't specify files with --stdin";
  99        if (errstr) {
 100                error("%s", errstr);
 101                usage_with_options(check_attr_usage, check_attr_options);
 102        }
 103
 104        check = xcalloc(cnt, sizeof(*check));
 105        for (i = 0; i < cnt; i++) {
 106                const char *name;
 107                struct git_attr *a;
 108                name = argv[i];
 109                a = git_attr(name);
 110                if (!a)
 111                        return error("%s: not a valid attribute name", name);
 112                check[i].attr = a;
 113        }
 114
 115        if (stdin_paths)
 116                check_attr_stdin_paths(cnt, check, argv);
 117        else {
 118                for (i = doubledash; i < argc; i++)
 119                        check_attr(cnt, check, argv, argv[i]);
 120                maybe_flush_or_die(stdout, "attribute to stdout");
 121        }
 122        return 0;
 123}