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 output_attr(int cnt, struct git_attr_check *check,
  24        const char *file)
  25{
  26        int j;
  27        for (j = 0; j < cnt; j++) {
  28                const char *value = check[j].value;
  29
  30                if (ATTR_TRUE(value))
  31                        value = "set";
  32                else if (ATTR_FALSE(value))
  33                        value = "unset";
  34                else if (ATTR_UNSET(value))
  35                        value = "unspecified";
  36
  37                quote_c_style(file, NULL, stdout, 0);
  38                printf(": %s: %s\n", git_attr_name(check[j].attr), value);
  39        }
  40}
  41
  42static void check_attr(int cnt, struct git_attr_check *check,
  43        const char *file)
  44{
  45        if (git_checkattr(file, cnt, check))
  46                die("git_checkattr died");
  47        output_attr(cnt, check, file);
  48}
  49
  50static void check_attr_stdin_paths(int cnt, struct git_attr_check *check)
  51{
  52        struct strbuf buf, nbuf;
  53        int line_termination = null_term_line ? 0 : '\n';
  54
  55        strbuf_init(&buf, 0);
  56        strbuf_init(&nbuf, 0);
  57        while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
  58                if (line_termination && buf.buf[0] == '"') {
  59                        strbuf_reset(&nbuf);
  60                        if (unquote_c_style(&nbuf, buf.buf, NULL))
  61                                die("line is badly quoted");
  62                        strbuf_swap(&buf, &nbuf);
  63                }
  64                check_attr(cnt, check, buf.buf);
  65                maybe_flush_or_die(stdout, "attribute to stdout");
  66        }
  67        strbuf_release(&buf);
  68        strbuf_release(&nbuf);
  69}
  70
  71int cmd_check_attr(int argc, const char **argv, const char *prefix)
  72{
  73        struct git_attr_check *check;
  74        int cnt, i, doubledash, filei;
  75        const char *errstr = NULL;
  76
  77        argc = parse_options(argc, argv, prefix, check_attr_options,
  78                             check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
  79        if (!argc)
  80                usage_with_options(check_attr_usage, check_attr_options);
  81
  82        if (read_cache() < 0) {
  83                die("invalid cache");
  84        }
  85
  86        doubledash = -1;
  87        for (i = 0; doubledash < 0 && i < argc; i++) {
  88                if (!strcmp(argv[i], "--"))
  89                        doubledash = i;
  90        }
  91
  92        /* If there is no double dash, we handle only one attribute */
  93        if (doubledash < 0) {
  94                cnt = 1;
  95                filei = 1;
  96        } else {
  97                cnt = doubledash;
  98                filei = doubledash + 1;
  99        }
 100
 101        if (cnt <= 0)
 102                errstr = "No attribute specified";
 103        else if (stdin_paths && filei < argc)
 104                errstr = "Can't specify files with --stdin";
 105        if (errstr) {
 106                error("%s", errstr);
 107                usage_with_options(check_attr_usage, check_attr_options);
 108        }
 109
 110        check = xcalloc(cnt, sizeof(*check));
 111        for (i = 0; i < cnt; i++) {
 112                const char *name;
 113                struct git_attr *a;
 114                name = argv[i];
 115                a = git_attr(name);
 116                if (!a)
 117                        return error("%s: not a valid attribute name", name);
 118                check[i].attr = a;
 119        }
 120
 121        if (stdin_paths)
 122                check_attr_stdin_paths(cnt, check);
 123        else {
 124                for (i = filei; i < argc; i++)
 125                        check_attr(cnt, check, argv[i]);
 126                maybe_flush_or_die(stdout, "attribute to stdout");
 127        }
 128        return 0;
 129}