/src/git/builtin/rev-parse.c

Source (jump to first uncovered line)
/*
 * rev-parse.c
 *
 * Copyright (C) Linus Torvalds, 2005
 */
#define USE_THE_INDEX_VARIABLE
#include "builtin.h"
#include "abspath.h"
#include "config.h"
#include "commit.h"
#include "environment.h"
#include "gettext.h"
#include "hash.h"
#include "hex.h"
#include "refs.h"
#include "quote.h"
#include "object-name.h"
#include "parse-options.h"
#include "path.h"
#include "diff.h"
#include "read-cache-ll.h"
#include "revision.h"
#include "setup.h"
#include "split-index.h"
#include "submodule.h"
#include "commit-reach.h"
#include "shallow.h"

#define DO_REVS   1
#define DO_NOREV  2
#define DO_FLAGS  4
#define DO_NONFLAGS 8
static int filter = ~0;

static const char *def;

#define NORMAL 0
#define REVERSED 1
static int show_type = NORMAL;

#define SHOW_SYMBOLIC_ASIS 1
#define SHOW_SYMBOLIC_FULL 2
static int symbolic;
static int abbrev;
static int abbrev_ref;
static int abbrev_ref_strict;
static int output_sq;

static int stuck_long;
static struct ref_exclusions ref_excludes = REF_EXCLUSIONS_INIT;

/*
 * Some arguments are relevant "revision" arguments,
 * others are about output format or other details.
 * This sorts it all out.
 */
static int is_rev_argument(const char *arg)
{
  static const char *rev_args[] = {
    "--all",
    "--bisect",
    "--dense",
    "--branches=",
    "--branches",
    "--header",
    "--ignore-missing",
    "--max-age=",
    "--max-count=",
    "--min-age=",
    "--no-merges",
    "--min-parents=",
    "--no-min-parents",
    "--max-parents=",
    "--no-max-parents",
    "--objects",
    "--objects-edge",
    "--parents",
    "--pretty",
    "--remotes=",
    "--remotes",
    "--glob=",
    "--sparse",
    "--tags=",
    "--tags",
    "--topo-order",
    "--date-order",
    "--unpacked",
    NULL
  };
  const char **p = rev_args;

  /* accept -<digit>, like traditional "head" */
  if ((*arg == '-') && isdigit(arg[1]))
    return 1;

  for (;;) {
    const char *str = *p++;
    int len;
    if (!str)
      return 0;
    len = strlen(str);
    if (!strcmp(arg, str) ||
        (str[len-1] == '=' && !strncmp(arg, str, len)))
      return 1;
  }
}

/* Output argument as a string, either SQ or normal */
static void show(const char *arg)
{
  if (output_sq) {
    int sq = '\'', ch;

    putchar(sq);
    while ((ch = *arg++)) {
      if (ch == sq)
        fputs("'\\'", stdout);
      putchar(ch);
    }
    putchar(sq);
    putchar(' ');
  }
  else
    puts(arg);
}

/* Like show(), but with a negation prefix according to type */
static void show_with_type(int type, const char *arg)
{
  if (type != show_type)
    putchar('^');
  show(arg);
}

/* Output a revision, only if filter allows it */
static void show_rev(int type, const struct object_id *oid, const char *name)
{
  if (!(filter & DO_REVS))
    return;
  def = NULL;

  if ((symbolic || abbrev_ref) && name) {
    if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) {
      struct object_id discard;
      char *full;

      switch (repo_dwim_ref(the_repository, name,
                strlen(name), &discard, &full,
                0)) {
      case 0:
        /*
         * Not found -- not a ref.  We could
         * emit "name" here, but symbolic-full
         * users are interested in finding the
         * refs spelled in full, and they would
         * need to filter non-refs if we did so.
         */
        break;
      case 1: /* happy */
        if (abbrev_ref) {
          char *old = full;
          full = shorten_unambiguous_ref(full,
            abbrev_ref_strict);
          free(old);
        }
        show_with_type(type, full);
        break;
      default: /* ambiguous */
        error("refname '%s' is ambiguous", name);
        break;
      }
      free(full);
    } else {
      show_with_type(type, name);
    }
  }
  else if (abbrev)
    show_with_type(type,
             repo_find_unique_abbrev(the_repository, oid, abbrev));
  else
    show_with_type(type, oid_to_hex(oid));
}

/* Output a flag, only if filter allows it. */
static int show_flag(const char *arg)
{
  if (!(filter & DO_FLAGS))
    return 0;
  if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
    show(arg);
    return 1;
  }
  return 0;
}

static int show_default(void)
{
  const char *s = def;

  if (s) {
    struct object_id oid;

    def = NULL;
    if (!repo_get_oid(the_repository, s, &oid)) {
      show_rev(NORMAL, &oid, s);
      return 1;
    }
  }
  return 0;
}

static int show_reference(const char *refname, const struct object_id *oid,
        int flag UNUSED, void *cb_data UNUSED)
{
  if (ref_excluded(&ref_excludes, refname))
    return 0;
  show_rev(NORMAL, oid, refname);
  return 0;
}

static int anti_reference(const char *refname, const struct object_id *oid,
        int flag UNUSED, void *cb_data UNUSED)
{
  show_rev(REVERSED, oid, refname);
  return 0;
}

static int show_abbrev(const struct object_id *oid, void *cb_data UNUSED)
{
  show_rev(NORMAL, oid, NULL);
  return 0;
}

static void show_datestring(const char *flag, const char *datestr)
{
  char *buffer;

  /* date handling requires both flags and revs */
  if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
    return;
  buffer = xstrfmt("%s%"PRItime, flag, approxidate(datestr));
  show(buffer);
  free(buffer);
}

static int show_file(const char *arg, int output_prefix)
{
  show_default();
  if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
    if (output_prefix) {
      const char *prefix = startup_info->prefix;
      char *fname = prefix_filename(prefix, arg);
      show(fname);
      free(fname);
    } else
      show(arg);
    return 1;
  }
  return 0;
}

static int try_difference(const char *arg)
{
  char *dotdot;
  struct object_id start_oid;
  struct object_id end_oid;
  const char *end;
  const char *start;
  int symmetric;
  static const char head_by_default[] = "HEAD";

  if (!(dotdot = strstr(arg, "..")))
    return 0;
  end = dotdot + 2;
  start = arg;
  symmetric = (*end == '.');

  *dotdot = 0;
  end += symmetric;

  if (!*end)
    end = head_by_default;
  if (dotdot == arg)
    start = head_by_default;

  if (start == head_by_default && end == head_by_default &&
      !symmetric) {
    /*
     * Just ".."?  That is not a range but the
     * pathspec for the parent directory.
     */
    *dotdot = '.';
    return 0;
  }

  if (!repo_get_oid_committish(the_repository, start, &start_oid) && !repo_get_oid_committish(the_repository, end, &end_oid)) {
    show_rev(NORMAL, &end_oid, end);
    show_rev(symmetric ? NORMAL : REVERSED, &start_oid, start);
    if (symmetric) {
      struct commit_list *exclude;
      struct commit *a, *b;
      a = lookup_commit_reference(the_repository, &start_oid);
      b = lookup_commit_reference(the_repository, &end_oid);
      if (!a || !b) {
        *dotdot = '.';
        return 0;
      }
      exclude = repo_get_merge_bases(the_repository, a, b);
      while (exclude) {
        struct commit *commit = pop_commit(&exclude);
        show_rev(REVERSED, &commit->object.oid, NULL);
      }
    }
    *dotdot = '.';
    return 1;
  }
  *dotdot = '.';
  return 0;
}

static int try_parent_shorthands(const char *arg)
{
  char *dotdot;
  struct object_id oid;
  struct commit *commit;
  struct commit_list *parents;
  int parent_number;
  int include_rev = 0;
  int include_parents = 0;
  int exclude_parent = 0;

  if ((dotdot = strstr(arg, "^!"))) {
    include_rev = 1;
    if (dotdot[2])
      return 0;
  } else if ((dotdot = strstr(arg, "^@"))) {
    include_parents = 1;
    if (dotdot[2])
      return 0;
  } else if ((dotdot = strstr(arg, "^-"))) {
    include_rev = 1;
    exclude_parent = 1;

    if (dotdot[2]) {
      char *end;
      exclude_parent = strtoul(dotdot + 2, &end, 10);
      if (*end != '\0' || !exclude_parent)
        return 0;
    }
  } else
    return 0;

  *dotdot = 0;
  if (repo_get_oid_committish(the_repository, arg, &oid) ||
      !(commit = lookup_commit_reference(the_repository, &oid))) {
    *dotdot = '^';
    return 0;
  }

  if (exclude_parent &&
      exclude_parent > commit_list_count(commit->parents)) {
    *dotdot = '^';
    return 0;
  }

  if (include_rev)
    show_rev(NORMAL, &oid, arg);
  for (parents = commit->parents, parent_number = 1;
       parents;
       parents = parents->next, parent_number++) {
    char *name = NULL;

    if (exclude_parent && parent_number != exclude_parent)
      continue;

    if (symbolic)
      name = xstrfmt("%s^%d", arg, parent_number);
    show_rev(include_parents ? NORMAL : REVERSED,
       &parents->item->object.oid, name);
    free(name);
  }

  *dotdot = '^';
  return 1;
}

static int parseopt_dump(const struct option *o, const char *arg, int unset)
{
  struct strbuf *parsed = o->value;
  if (unset)
    strbuf_addf(parsed, " --no-%s", o->long_name);
  else if (o->short_name && (o->long_name == NULL || !stuck_long))
    strbuf_addf(parsed, " -%c", o->short_name);
  else
    strbuf_addf(parsed, " --%s", o->long_name);
  if (arg) {
    if (!stuck_long)
      strbuf_addch(parsed, ' ');
    else if (o->long_name)
      strbuf_addch(parsed, '=');
    sq_quote_buf(parsed, arg);
  }
  return 0;
}

static const char *skipspaces(const char *s)
{
  while (isspace(*s))
    s++;
  return s;
}

static char *findspace(const char *s)
{
  for (; *s; s++)
    if (isspace(*s))
      return (char*)s;
  return NULL;
}

static int cmd_parseopt(int argc, const char **argv, const char *prefix)
{
  static int keep_dashdash = 0, stop_at_non_option = 0;
  static char const * const parseopt_usage[] = {
    N_("git rev-parse --parseopt [<options>] -- [<args>...]"),
    NULL
  };
  static struct option parseopt_opts[] = {
    OPT_BOOL(0, "keep-dashdash", &keep_dashdash,
          N_("keep the `--` passed as an arg")),
    OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option,
          N_("stop parsing after the "
             "first non-option argument")),
    OPT_BOOL(0, "stuck-long", &stuck_long,
          N_("output in stuck long form")),
    OPT_END(),
  };
  static const char * const flag_chars = "*=?!";

  struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT;
  const char **usage = NULL;
  struct option *opts = NULL;
  int onb = 0, osz = 0, unb = 0, usz = 0;

  strbuf_addstr(&parsed, "set --");
  argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage,
                       PARSE_OPT_KEEP_DASHDASH);
  if (argc < 1 || strcmp(argv[0], "--"))
    usage_with_options(parseopt_usage, parseopt_opts);

  /* get the usage up to the first line with a -- on it */
  for (;;) {
    if (strbuf_getline(&sb, stdin) == EOF)
      die(_("premature end of input"));
    ALLOC_GROW(usage, unb + 1, usz);
    if (!strcmp("--", sb.buf)) {
      if (unb < 1)
        die(_("no usage string given before the `--' separator"));
      usage[unb] = NULL;
      break;
    }
    usage[unb++] = strbuf_detach(&sb, NULL);
  }

  /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
  while (strbuf_getline(&sb, stdin) != EOF) {
    const char *s;
    char *help;
    struct option *o;

    if (!sb.len)
      continue;

    ALLOC_GROW(opts, onb + 1, osz);
    memset(opts + onb, 0, sizeof(opts[onb]));

    o = &opts[onb++];
    help = findspace(sb.buf);
    if (!help || sb.buf == help) {
      o->type = OPTION_GROUP;
      o->help = xstrdup(skipspaces(sb.buf));
      continue;
    }

    *help = '\0';

    o->type = OPTION_CALLBACK;
    o->help = xstrdup(skipspaces(help+1));
    o->value = &parsed;
    o->flags = PARSE_OPT_NOARG;
    o->callback = &parseopt_dump;

    /* name(s) */
    s = strpbrk(sb.buf, flag_chars);
    if (!s)
      s = help;

    if (s == sb.buf)
      die(_("missing opt-spec before option flags"));

    if (s - sb.buf == 1) /* short option only */
      o->short_name = *sb.buf;
    else if (sb.buf[1] != ',') /* long option only */
      o->long_name = xmemdupz(sb.buf, s - sb.buf);
    else {
      o->short_name = *sb.buf;
      o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2);
    }

    /* flags */
    while (s < help) {
      switch (*s++) {
      case '=':
        o->flags &= ~PARSE_OPT_NOARG;
        continue;
      case '?':
        o->flags &= ~PARSE_OPT_NOARG;
        o->flags |= PARSE_OPT_OPTARG;
        continue;
      case '!':
        o->flags |= PARSE_OPT_NONEG;
        continue;
      case '*':
        o->flags |= PARSE_OPT_HIDDEN;
        continue;
      }
      s--;
      break;
    }

    if (s < help)
      o->argh = xmemdupz(s, help - s);
  }
  strbuf_release(&sb);

  /* put an OPT_END() */
  ALLOC_GROW(opts, onb + 1, osz);
  memset(opts + onb, 0, sizeof(opts[onb]));
  argc = parse_options(argc, argv, prefix, opts, usage,
      (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) |
      (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) |
      PARSE_OPT_SHELL_EVAL);

  strbuf_addstr(&parsed, " --");
  sq_quote_argv(&parsed, argv);
  puts(parsed.buf);
  strbuf_release(&parsed);
  return 0;
}

static int cmd_sq_quote(int argc, const char **argv)
{
  struct strbuf buf = STRBUF_INIT;

  if (argc)
    sq_quote_argv(&buf, argv);
  printf("%s\n", buf.buf);
  strbuf_release(&buf);

  return 0;
}

static void die_no_single_rev(int quiet)
{
  if (quiet)
    exit(1);
  else
    die(_("Needed a single revision"));
}

static const char builtin_rev_parse_usage[] =
N_("git rev-parse --parseopt [<options>] -- [<args>...]\n"
   "   or: git rev-parse --sq-quote [<arg>...]\n"
   "   or: git rev-parse [<options>] [<arg>...]\n"
   "\n"
   "Run \"git rev-parse --parseopt -h\" for more information on the first usage.");

/*
 * Parse "opt" or "opt=<value>", setting value respectively to either
 * NULL or the string after "=".
 */
static int opt_with_value(const char *arg, const char *opt, const char **value)
{
  if (skip_prefix(arg, opt, &arg)) {
    if (!*arg) {
      *value = NULL;
      return 1;
    }
    if (*arg++ == '=') {
      *value = arg;
      return 1;
    }
  }
  return 0;
}

static void handle_ref_opt(const char *pattern, const char *prefix)
{
  if (pattern)
    for_each_glob_ref_in(show_reference, pattern, prefix, NULL);
  else
    for_each_ref_in(prefix, show_reference, NULL);
  clear_ref_exclusions(&ref_excludes);
}

enum format_type {
  /* We would like a relative path. */
  FORMAT_RELATIVE,
  /* We would like a canonical absolute path. */
  FORMAT_CANONICAL,
  /* We would like the default behavior. */
  FORMAT_DEFAULT,
};

enum default_type {
  /* Our default is a relative path. */
  DEFAULT_RELATIVE,
  /* Our default is a relative path if there's a shared root. */
  DEFAULT_RELATIVE_IF_SHARED,
  /* Our default is a canonical absolute path. */
  DEFAULT_CANONICAL,
  /* Our default is not to modify the item. */
  DEFAULT_UNMODIFIED,
};

static void print_path(const char *path, const char *prefix, enum format_type format, enum default_type def)
{
  char *cwd = NULL;
  /*
   * We don't ever produce a relative path if prefix is NULL, so set the
   * prefix to the current directory so that we can produce a relative
   * path whenever possible.  If we're using RELATIVE_IF_SHARED mode, then
   * we want an absolute path unless the two share a common prefix, so don't
   * set it in that case, since doing so causes a relative path to always
   * be produced if possible.
   */
  if (!prefix && (format != FORMAT_DEFAULT || def != DEFAULT_RELATIVE_IF_SHARED))
    prefix = cwd = xgetcwd();
  if (format == FORMAT_DEFAULT && def == DEFAULT_UNMODIFIED) {
    puts(path);
  } else if (format == FORMAT_RELATIVE ||
      (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE)) {
    /*
     * In order for relative_path to work as expected, we need to
     * make sure that both paths are absolute paths.  If we don't,
     * we can end up with an unexpected absolute path that the user
     * didn't want.
     */
    struct strbuf buf = STRBUF_INIT, realbuf = STRBUF_INIT, prefixbuf = STRBUF_INIT;
    if (!is_absolute_path(path)) {
      strbuf_realpath_forgiving(&realbuf, path,  1);
      path = realbuf.buf;
    }
    if (!is_absolute_path(prefix)) {
      strbuf_realpath_forgiving(&prefixbuf, prefix, 1);
      prefix = prefixbuf.buf;
    }
    puts(relative_path(path, prefix, &buf));
    strbuf_release(&buf);
    strbuf_release(&realbuf);
    strbuf_release(&prefixbuf);
  } else if (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE_IF_SHARED) {
    struct strbuf buf = STRBUF_INIT;
    puts(relative_path(path, prefix, &buf));
    strbuf_release(&buf);
  } else {
    struct strbuf buf = STRBUF_INIT;
    strbuf_realpath_forgiving(&buf, path, 1);
    puts(buf.buf);
    strbuf_release(&buf);
  }
  free(cwd);
}

int cmd_rev_parse(int argc, const char **argv, const char *prefix)
{
  int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
  int did_repo_setup = 0;
  int has_dashdash = 0;
  int output_prefix = 0;
  struct object_id oid;
  unsigned int flags = 0;
  const char *name = NULL;
  struct object_context unused;
  struct strbuf buf = STRBUF_INIT;
  const int hexsz = the_hash_algo->hexsz;
  int seen_end_of_options = 0;
  enum format_type format = FORMAT_DEFAULT;

  if (argc > 1 && !strcmp("--parseopt", argv[1]))
    return cmd_parseopt(argc - 1, argv + 1, prefix);

  if (argc > 1 && !strcmp("--sq-quote", argv[1]))
    return cmd_sq_quote(argc - 2, argv + 2);

  if (argc > 1 && !strcmp("-h", argv[1]))
    usage(builtin_rev_parse_usage);

  for (i = 1; i < argc; i++) {
    if (!strcmp(argv[i], "--")) {
      has_dashdash = 1;
      break;
    }
  }

  /* No options; just report on whether we're in a git repo or not. */
  if (argc == 1) {
    setup_git_directory();
    git_config(git_default_config, NULL);
    return 0;
  }

  for (i = 1; i < argc; i++) {
    const char *arg = argv[i];

    if (as_is) {
      if (show_file(arg, output_prefix) && as_is < 2)
        verify_filename(prefix, arg, 0);
      continue;
    }

    if (!seen_end_of_options) {
      if (!strcmp(arg, "--local-env-vars")) {
        int i;
        for (i = 0; local_repo_env[i]; i++)
          printf("%s\n", local_repo_env[i]);
        continue;
      }
      if (!strcmp(arg, "--resolve-git-dir")) {
        const char *gitdir = argv[++i];
        if (!gitdir)
          die(_("--resolve-git-dir requires an argument"));
        gitdir = resolve_gitdir(gitdir);
        if (!gitdir)
          die(_("not a gitdir '%s'"), argv[i]);
        puts(gitdir);
        continue;
      }
    }

    /* The rest of the options require a git repository. */
    if (!did_repo_setup) {
      prefix = setup_git_directory();
      git_config(git_default_config, NULL);
      did_repo_setup = 1;

      prepare_repo_settings(the_repository);
      the_repository->settings.command_requires_full_index = 0;
    }

    if (!strcmp(arg, "--")) {
      as_is = 2;
      /* Pass on the "--" if we show anything but files.. */
      if (filter & (DO_FLAGS | DO_REVS))
        show_file(arg, 0);
      continue;
    }

    if (!seen_end_of_options && *arg == '-') {
      if (!strcmp(arg, "--git-path")) {
        if (!argv[i + 1])
          die(_("--git-path requires an argument"));
        strbuf_reset(&buf);
        print_path(git_path("%s", argv[i + 1]), prefix,
            format,
            DEFAULT_RELATIVE_IF_SHARED);
        i++;
        continue;
      }
      if (!strcmp(arg,"-n")) {
        if (++i >= argc)
          die(_("-n requires an argument"));
        if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
          show(arg);
          show(argv[i]);
        }
        continue;
      }
      if (starts_with(arg, "-n")) {
        if ((filter & DO_FLAGS) && (filter & DO_REVS))
          show(arg);
        continue;
      }
      if (opt_with_value(arg, "--path-format", &arg)) {
        if (!arg)
          die(_("--path-format requires an argument"));
        if (!strcmp(arg, "absolute")) {
          format = FORMAT_CANONICAL;
        } else if (!strcmp(arg, "relative")) {
          format = FORMAT_RELATIVE;
        } else {
          die(_("unknown argument to --path-format: %s"), arg);
        }
        continue;
      }
      if (!strcmp(arg, "--default")) {
        def = argv[++i];
        if (!def)
          die(_("--default requires an argument"));
        continue;
      }
      if (!strcmp(arg, "--prefix")) {
        prefix = argv[++i];
        if (!prefix)
          die(_("--prefix requires an argument"));
        startup_info->prefix = prefix;
        output_prefix = 1;
        continue;
      }
      if (!strcmp(arg, "--revs-only")) {
        filter &= ~DO_NOREV;
        continue;
      }
      if (!strcmp(arg, "--no-revs")) {
        filter &= ~DO_REVS;
        continue;
      }
      if (!strcmp(arg, "--flags")) {
        filter &= ~DO_NONFLAGS;
        continue;
      }
      if (!strcmp(arg, "--no-flags")) {
        filter &= ~DO_FLAGS;
        continue;
      }
      if (!strcmp(arg, "--verify")) {
        filter &= ~(DO_FLAGS|DO_NOREV);
        verify = 1;
        continue;
      }
      if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
        quiet = 1;
        flags |= GET_OID_QUIETLY;
        continue;
      }
      if (opt_with_value(arg, "--short", &arg)) {
        filter &= ~(DO_FLAGS|DO_NOREV);
        verify = 1;
        abbrev = DEFAULT_ABBREV;
        if (!arg)
          continue;
        abbrev = strtoul(arg, NULL, 10);
        if (abbrev < MINIMUM_ABBREV)
          abbrev = MINIMUM_ABBREV;
        else if (hexsz <= abbrev)
          abbrev = hexsz;
        continue;
      }
      if (!strcmp(arg, "--sq")) {
        output_sq = 1;
        continue;
      }
      if (!strcmp(arg, "--not")) {
        show_type ^= REVERSED;
        continue;
      }
      if (!strcmp(arg, "--symbolic")) {
        symbolic = SHOW_SYMBOLIC_ASIS;
        continue;
      }
      if (!strcmp(arg, "--symbolic-full-name")) {
        symbolic = SHOW_SYMBOLIC_FULL;
        continue;
      }
      if (opt_with_value(arg, "--abbrev-ref", &arg)) {
        abbrev_ref = 1;
        abbrev_ref_strict = warn_ambiguous_refs;
        if (arg) {
          if (!strcmp(arg, "strict"))
            abbrev_ref_strict = 1;
          else if (!strcmp(arg, "loose"))
            abbrev_ref_strict = 0;
          else
            die(_("unknown mode for --abbrev-ref: %s"),
                arg);
        }
        continue;
      }
      if (!strcmp(arg, "--all")) {
        for_each_ref(show_reference, NULL);
        clear_ref_exclusions(&ref_excludes);
        continue;
      }
      if (skip_prefix(arg, "--disambiguate=", &arg)) {
        repo_for_each_abbrev(the_repository, arg,
                 show_abbrev, NULL);
        continue;
      }
      if (!strcmp(arg, "--bisect")) {
        for_each_fullref_in("refs/bisect/bad", show_reference, NULL);
        for_each_fullref_in("refs/bisect/good", anti_reference, NULL);
        continue;
      }
      if (opt_with_value(arg, "--branches", &arg)) {
        if (ref_excludes.hidden_refs_configured)
          return error(_("--exclude-hidden cannot be used together with --branches"));
        handle_ref_opt(arg, "refs/heads/");
        continue;
      }
      if (opt_with_value(arg, "--tags", &arg)) {
        if (ref_excludes.hidden_refs_configured)
          return error(_("--exclude-hidden cannot be used together with --tags"));
        handle_ref_opt(arg, "refs/tags/");
        continue;
      }
      if (skip_prefix(arg, "--glob=", &arg)) {
        handle_ref_opt(arg, NULL);
        continue;
      }
      if (opt_with_value(arg, "--remotes", &arg)) {
        if (ref_excludes.hidden_refs_configured)
          return error(_("--exclude-hidden cannot be used together with --remotes"));
        handle_ref_opt(arg, "refs/remotes/");
        continue;
      }
      if (skip_prefix(arg, "--exclude=", &arg)) {
        add_ref_exclusion(&ref_excludes, arg);
        continue;
      }
      if (skip_prefix(arg, "--exclude-hidden=", &arg)) {
        exclude_hidden_refs(&ref_excludes, arg);
        continue;
      }
      if (!strcmp(arg, "--show-toplevel")) {
        const char *work_tree = get_git_work_tree();
        if (work_tree)
          print_path(work_tree, prefix, format, DEFAULT_UNMODIFIED);
        else
          die(_("this operation must be run in a work tree"));
        continue;
      }
      if (!strcmp(arg, "--show-superproject-working-tree")) {
        struct strbuf superproject = STRBUF_INIT;
        if (get_superproject_working_tree(&superproject))
          print_path(superproject.buf, prefix, format, DEFAULT_UNMODIFIED);
        strbuf_release(&superproject);
        continue;
      }
      if (!strcmp(arg, "--show-prefix")) {
        if (prefix)
          puts(prefix);
        else
          putchar('\n');
        continue;
      }
      if (!strcmp(arg, "--show-cdup")) {
        const char *pfx = prefix;
        if (!is_inside_work_tree()) {
          const char *work_tree =
            get_git_work_tree();
          if (work_tree)
            printf("%s\n", work_tree);
          continue;
        }
        while (pfx) {
          pfx = strchr(pfx, '/');
          if (pfx) {
            pfx++;
            printf("../");
          }
        }
        putchar('\n');
        continue;
      }
      if (!strcmp(arg, "--git-dir") ||
          !strcmp(arg, "--absolute-git-dir")) {
        const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
        char *cwd;
        int len;
        enum format_type wanted = format;
        if (arg[2] == 'g') { /* --git-dir */
          if (gitdir) {
            print_path(gitdir, prefix, format, DEFAULT_UNMODIFIED);
            continue;
          }
          if (!prefix) {
            print_path(".git", prefix, format, DEFAULT_UNMODIFIED);
            continue;
          }
        } else {   /* --absolute-git-dir */
          wanted = FORMAT_CANONICAL;
          if (!gitdir && !prefix)
            gitdir = ".git";
          if (gitdir) {
            struct strbuf realpath = STRBUF_INIT;
            strbuf_realpath(&realpath, gitdir, 1);
            puts(realpath.buf);
            strbuf_release(&realpath);
            continue;
          }
        }
        cwd = xgetcwd();
        len = strlen(cwd);
        strbuf_reset(&buf);
        strbuf_addf(&buf, "%s%s.git", cwd, len && cwd[len-1] != '/' ? "/" : "");
        free(cwd);
        print_path(buf.buf, prefix, wanted, DEFAULT_CANONICAL);
        continue;
      }
      if (!strcmp(arg, "--git-common-dir")) {
        print_path(get_git_common_dir(), prefix, format, DEFAULT_RELATIVE_IF_SHARED);
        continue;
      }
      if (!strcmp(arg, "--is-inside-git-dir")) {
        printf("%s\n", is_inside_git_dir() ? "true"
            : "false");
        continue;
      }
      if (!strcmp(arg, "--is-inside-work-tree")) {
        printf("%s\n", is_inside_work_tree() ? "true"
            : "false");
        continue;
      }
      if (!strcmp(arg, "--is-bare-repository")) {
        printf("%s\n", is_bare_repository() ? "true"
            : "false");
        continue;
      }
      if (!strcmp(arg, "--is-shallow-repository")) {
        printf("%s\n",
            is_repository_shallow(the_repository) ? "true"
            : "false");
        continue;
      }
      if (!strcmp(arg, "--shared-index-path")) {
        if (repo_read_index(the_repository) < 0)
          die(_("Could not read the index"));
        if (the_index.split_index) {
          const struct object_id *oid = &the_index.split_index->base_oid;
          const char *path = git_path("sharedindex.%s", oid_to_hex(oid));
          print_path(path, prefix, format, DEFAULT_RELATIVE);
        }
        continue;
      }
      if (skip_prefix(arg, "--since=", &arg)) {
        show_datestring("--max-age=", arg);
        continue;
      }
      if (skip_prefix(arg, "--after=", &arg)) {
        show_datestring("--max-age=", arg);
        continue;
      }
      if (skip_prefix(arg, "--before=", &arg)) {
        show_datestring("--min-age=", arg);
        continue;
      }
      if (skip_prefix(arg, "--until=", &arg)) {
        show_datestring("--min-age=", arg);
        continue;
      }
      if (opt_with_value(arg, "--show-object-format", &arg)) {
        const char *val = arg ? arg : "storage";

        if (strcmp(val, "storage") &&
            strcmp(val, "input") &&
            strcmp(val, "output"))
          die(_("unknown mode for --show-object-format: %s"),
              arg);
        puts(the_hash_algo->name);
        continue;
      }
      if (!strcmp(arg, "--end-of-options")) {
        seen_end_of_options = 1;
        if (filter & (DO_FLAGS | DO_REVS))
          show_file(arg, 0);
        continue;
      }
      if (show_flag(arg) && verify)
        die_no_single_rev(quiet);
      continue;
    }

    /* Not a flag argument */
    if (try_difference(arg))
      continue;
    if (try_parent_shorthands(arg))
      continue;
    name = arg;
    type = NORMAL;
    if (*arg == '^') {
      name++;
      type = REVERSED;
    }
    if (!get_oid_with_context(the_repository, name,
            flags, &oid, &unused)) {
      if (verify)
        revs_count++;
      else
        show_rev(type, &oid, name);
      continue;
    }
    if (verify)
      die_no_single_rev(quiet);
    if (has_dashdash)
      die(_("bad revision '%s'"), arg);
    as_is = 1;
    if (!show_file(arg, output_prefix))
      continue;
    verify_filename(prefix, arg, 1);
  }
  strbuf_release(&buf);
  if (verify) {
    if (revs_count == 1) {
      show_rev(type, &oid, name);
      return 0;
    } else if (revs_count == 0 && show_default())
      return 0;
    die_no_single_rev(quiet);
  } else
    show_default();
  return 0;
}

Coverage Report

Created: 2023-11-19 07:08