static void die_if_unmerged_cache(int reset_type) { if (is_merge() || read_cache() < 0 || unmerged_cache()) die(_("Cannot do a %s reset in the middle of a merge."), _(reset_type_names[reset_type])); }
int cmd_reset(int argc, const char **argv, const char *prefix) { int i = 0, reset_type = NONE, update_ref_status = 0, quiet = 0; const char *rev = "HEAD"; unsigned char sha1[20], *orig = NULL, sha1_orig[20], *old_orig = NULL, sha1_old_orig[20]; struct commit *commit; char *reflog_action, msg[1024]; const struct option options[] = { OPT_SET_INT(0, "mixed", &reset_type, "reset HEAD and index", MIXED), OPT_SET_INT(0, "soft", &reset_type, "reset only HEAD", SOFT), OPT_SET_INT(0, "hard", &reset_type, "reset HEAD, index and working tree", HARD), OPT_BOOLEAN('q', NULL, &quiet, "disable showing new HEAD in hard reset and progress message"), OPT_END() }; git_config(git_default_config, NULL); argc = parse_options(argc, argv, options, git_reset_usage, PARSE_OPT_KEEP_DASHDASH); reflog_action = args_to_str(argv); setenv("GIT_REFLOG_ACTION", reflog_action, 0); /* * Possible arguments are: * * git reset [-opts] <rev> <paths>... * git reset [-opts] <rev> -- <paths>... * git reset [-opts] -- <paths>... * git reset [-opts] <paths>... * * At this point, argv[i] points immediately after [-opts]. */ if (i < argc) { if (!strcmp(argv[i], "--")) { i++; /* reset to HEAD, possibly with paths */ } else if (i + 1 < argc && !strcmp(argv[i+1], "--")) { rev = argv[i]; i += 2; } /* * Otherwise, argv[i] could be either <rev> or <paths> and * has to be unambigous. */ else if (!get_sha1(argv[i], sha1)) { /* * Ok, argv[i] looks like a rev; it should not * be a filename. */ verify_non_filename(prefix, argv[i]); rev = argv[i++]; } else { /* Otherwise we treat this as a filename */ verify_filename(prefix, argv[i]); } } if (get_sha1(rev, sha1)) die("Failed to resolve '%s' as a valid ref.", rev); commit = lookup_commit_reference(sha1); if (!commit) die("Could not parse object '%s'.", rev); hashcpy(sha1, commit->object.sha1); /* git reset tree [--] paths... can be used to * load chosen paths from the tree into the index without * affecting the working tree nor HEAD. */ if (i < argc) { if (reset_type == MIXED) warning("--mixed option is deprecated with paths."); else if (reset_type != NONE) die("Cannot do %s reset with paths.", reset_type_names[reset_type]); return read_from_tree(prefix, argv + i, sha1, quiet ? REFRESH_QUIET : REFRESH_SAY_CHANGED); } if (reset_type == NONE) reset_type = MIXED; /* by default */ if (reset_type == HARD && is_bare_repository()) die("hard reset makes no sense in a bare repository"); /* Soft reset does not touch the index file nor the working tree * at all, but requires them in a good order. Other resets reset * the index file to the tree object we are switching to. */ if (reset_type == SOFT) { if (is_merge() || read_cache() < 0 || unmerged_cache()) die("Cannot do a soft reset in the middle of a merge."); } else if (reset_index_file(sha1, (reset_type == HARD), quiet)) die("Could not reset index file to revision '%s'.", rev); /* Any resets update HEAD to the head being switched to, * saving the previous head in ORIG_HEAD before. */ if (!get_sha1("ORIG_HEAD", sha1_old_orig)) old_orig = sha1_old_orig; if (!get_sha1("HEAD", sha1_orig)) { orig = sha1_orig; prepend_reflog_action("updating ORIG_HEAD", msg, sizeof(msg)); update_ref(msg, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR); } else if (old_orig) delete_ref("ORIG_HEAD", old_orig); prepend_reflog_action("updating HEAD", msg, sizeof(msg)); update_ref_status = update_ref(msg, "HEAD", sha1, orig, 0, MSG_ON_ERR); switch (reset_type) { case HARD: if (!update_ref_status && !quiet) print_new_head_line(commit); break; case SOFT: /* Nothing else to do. */ break; case MIXED: /* Report what has not been updated. */ update_index_refresh(0, NULL, quiet ? REFRESH_QUIET : REFRESH_SAY_CHANGED); break; } remove_branch_state(); free(reflog_action); return update_ref_status; }
OBJECT InsertSym(FULL_CHAR *str, unsigned char xtype, FILE_POS *xfpos, unsigned char xprecedence, BOOLEAN xindefinite, BOOLEAN xrecursive, unsigned xpredefined, OBJECT xenclosing, OBJECT xbody) { register int sum, rlen; register unsigned char *x; OBJECT p, q, s, tmp, link, entry, plink; int len; debug3(DST, DD, "InsertSym( %s, %s, in %s )", Image(xtype), str, SymName(xenclosing)); if( !LexLegalName(str) ) Error(29, 3, "invalid symbol name %s", WARN, xfpos, str); New(s, xtype); FposCopy(fpos(s), *xfpos); has_body(s) = FALSE; filter(s) = nilobj; use_invocation(s) = nilobj; imports(s) = nilobj; imports_encl(s) = FALSE; right_assoc(s) = TRUE; precedence(s) = xprecedence; indefinite(s) = xindefinite; recursive(s) = xrecursive; predefined(s) = xpredefined; enclosing(s) = xenclosing; sym_body(s) = xbody; base_uses(s) = nilobj; uses(s) = nilobj; marker(s) = nilobj; cross_sym(s) = nilobj; is_extern_target(s) = FALSE; uses_extern_target(s)= FALSE; visible(s) = FALSE; uses_galley(s) = FALSE; horiz_galley(s) = ROWM; has_compulsory(s) = 0; is_compulsory(s) = FALSE; uses_count(s) = 0; dirty(s) = FALSE; if( enclosing(s) != nilobj && type(enclosing(s)) == NPAR ) dirty(s) = dirty(enclosing(s)) = TRUE; has_par(s) = FALSE; has_lpar(s) = FALSE; has_rpar(s) = FALSE; if( is_par(type(s)) ) has_par(enclosing(s)) = TRUE; if( type(s) == LPAR ) has_lpar(enclosing(s)) = TRUE; if( type(s) == RPAR ) has_rpar(enclosing(s)) = TRUE; /* assign a code letter between a and z to any NPAR symbol */ if( type(s) == NPAR ) { if( LastDown(enclosing(s)) != enclosing(s) ) { Child(tmp, LastDown(enclosing(s))); if( type(tmp) == NPAR ) { if( npar_code(tmp) == 'z' || npar_code(tmp) == ' ' ) npar_code(s) = ' '; else npar_code(s) = npar_code(tmp)+1; } else npar_code(s) = 'a'; } else npar_code(s) = 'a'; } has_target(s) = FALSE; force_target(s) = FALSE; if( !StringEqual(str, KW_TARGET) ) is_target(s) = FALSE; else { is_target(s) = has_target(enclosing(s)) = TRUE; /* if @Target is found after @Key, take note of external target */ if( has_key(enclosing(s)) && xbody != nilobj && is_cross(type(xbody)) ) { if( LastDown(xbody) != Down(xbody) ) { OBJECT sym; Child(sym, Down(xbody)); if( type(sym) == CLOSURE ) { is_extern_target(actual(sym)) = TRUE; uses_extern_target(actual(sym)) = TRUE; } } } } has_tag(s) = is_tag(s) = FALSE; has_key(s) = is_key(s) = FALSE; has_optimize(s) = is_optimize(s) = FALSE; has_merge(s) = is_merge(s) = FALSE; has_enclose(s) = is_enclose(s) = FALSE; if( enclosing(s) != nilobj && type(enclosing(s)) == LOCAL ) { if( StringEqual(str, KW_TAG) ) is_tag(s) = has_tag(enclosing(s)) = dirty(enclosing(s)) = TRUE; if( StringEqual(str, KW_OPTIMIZE) ) is_optimize(s) = has_optimize(enclosing(s)) = TRUE; if( StringEqual(str, KW_KEY) ) { is_key(s) = has_key(enclosing(s)) = dirty(enclosing(s)) = TRUE; /* if @Key is found after @Target, take note of external target */ for( link=Down(enclosing(s)); link!=enclosing(s); link=NextDown(link) ) { Child(p, link); if( is_target(p) && sym_body(p)!=nilobj && is_cross(type(sym_body(p))) ) { OBJECT sym; Child(sym, Down(sym_body(p))); if( type(sym) == CLOSURE ) { is_extern_target(actual(sym)) = TRUE; uses_extern_target(actual(sym)) = TRUE; } } } } if( StringEqual(str, KW_MERGE) ) is_merge(s) = has_merge(enclosing(s)) = TRUE; if( StringEqual(str, KW_ENCLOSE) ) is_enclose(s) = has_enclose(enclosing(s)) = TRUE; } if( StringEqual(str, KW_FILTER) ) { if( type(s) != LOCAL || enclosing(s) == StartSym ) Error(29, 4, "%s must be a local definition", WARN, &fpos(s), str); else if( !has_rpar(enclosing(s)) ) Error(29, 14, "%s must lie within a symbol with a right parameter", WARN, &fpos(s), KW_FILTER); else { filter(enclosing(s)) = s; precedence(enclosing(s)) = FILTER_PREC; } } if( type(s) == RPAR && has_body(enclosing(s)) && (is_tag(s) || is_key(s) || is_optimize(s)) ) Error(29, 5, "a body parameter may not be named %s", WARN, &fpos(s), str); if( type(s) == RPAR && has_target(enclosing(s)) && (is_tag(s) || is_key(s) || is_optimize(s)) ) Error(29, 6, "the right parameter of a galley may not be called %s", WARN, &fpos(s), str); len = StringLength(str); hash(str, len, sum); ifdebug(DST, D, sym_spread[sum]++; sym_count++); entry = (OBJECT) &symtab[sum]; for( plink = Down(entry); plink != entry; plink = NextDown(plink) ) { Child(p, plink); if( length(p) == len && StringEqual(str, string(p)) ) { for( link = Down(p); link != p; link = NextDown(link) ) { Child(q, link); if( enclosing(s) == enclosing(q) ) { Error(29, 7, "symbol %s previously defined at%s", WARN, &fpos(s), str, EchoFilePos(&fpos(q)) ); if( AltErrorFormat ) { Error(29, 13, "symbol %s previously defined here", WARN, &fpos(q), str); } break; } } goto wrapup; } } /* need a new OBJECT as well as s */ NewWord(p, WORD, len, xfpos); length(p) = len; StringCopy(string(p), str); Link(entry, p); wrapup: Link(p, s); if( enclosing(s) != nilobj ) Link(enclosing(s), s); debug2(DST, DD, "InsertSym Link(%s, %s) and returning.", SymName(enclosing(s)), SymName(s)); return s; } /* end InsertSym */