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/* idfile.h -- decls for ID file header and constituent file names
Copyright (C) 1986, 1995 Greg McGary
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _idfile_h_
#define _idfile_h_ 1
#include <sys/types.h>
#include <stdio.h>
#include <obstack.h>
#include "hash.h"
/* The ID file header is the nexus of all ID file information. This
is an in-core structure, only some of which is read/written to disk. */
struct idhead
{
unsigned char idh_magic[2];
#define IDH_MAGIC_0 ('I'|0x80)
#define IDH_MAGIC_1 ('D'|0x80)
unsigned char idh_version;
#define IDH_VERSION 4
unsigned short idh_flags;
#define IDH_COUNTS (1<<0) /* include occurrence counts for each token */
#define IDH_FOLLOW_SL (1<<1) /* follow symlinks to directories */
#define IDH_COMMENTS (1<<2) /* include tokens found in comments */
#define IDH_LOCALS (1<<3) /* include names of formal params & local vars */
#define IDH_DECL_DEFN_USE (1<<4) /* include decl/defn/use info */
#define IDH_L_R_VALUE (1<<5) /* include lvalue/rvalue info */
#define IDH_CALL_ER_EE (1<<6) /* include caller/callee relationship info */
unsigned long idh_file_links; /* total # of file links */
unsigned long idh_files; /* total # of constituent source files */
unsigned long idh_tokens; /* total # of constituent tokens */
/* idh_*_size: max buffer-sizes for ID file reading programs */
unsigned long idh_buf_size; /* # of bytes in longest entry */
unsigned long idh_vec_size; /* # of hits in longest entry */
/* idh_*_offset: ID file offsets for start of various sections */
long idh_tokens_offset; /* constituent tokens section */
long idh_flinks_offset; /* constituent file & directory names section */
long idh_end_offset; /* end of tokens section */
unsigned short idh_max_link; /* longest file name component */
unsigned short idh_max_path; /* largest # of file name components */
/* The following are run-time variables and are not stored on disk */
struct hash_table idh_member_file_table;
struct hash_table idh_file_link_table;
#if HAVE_LINK
struct hash_table idh_dev_ino_table; /* for detecting file name aliases */
#endif
struct obstack idh_member_file_obstack;
struct obstack idh_file_link_obstack;
#if HAVE_LINK
struct obstack idh_dev_ino_obstack;
#endif
char *idh_file_name;
FILE *idh_FILE;
#if 0
time_t idh_mod_time;
struct arg_file **idh_file_order; /* sequence in ID file */
struct arg_file **idh_scan_order; /* sequence in summaries */
#endif
};
/* A file_link represents a single component (file or directory) in a
file name. It has a name, a parent file_link and some flags. */
struct file_link
{
union {
struct file_link *u_parent;
#define fl_parent fl_u.u_parent
unsigned long u_index;
#define fl_index fl_u.u_index
#define FL_PARENT_INDEX_BYTES 3
#define IS_ROOT_FILE_LINK(flink) ((flink)->fl_parent == (flink))
} fl_u;
unsigned char fl_flags;
#define FL_CMD_LINE_ARG (1<<0)
#define FL_USED (1<<1)
#define FL_MEMBER (1<<2) /* has a corresponding member_file entry */
#define FL_SCAN_ME (1<<3)
#define FL_SYM_LINK (1<<4)
#define FL_TYPE_MASK (FL_TYPE_DIR|FL_TYPE_FILE)
# define FL_TYPE_DIR (1<<5)
# define FL_IS_DIR(_f_) (((_f_) & FL_TYPE_MASK) == FL_TYPE_DIR)
# define FL_TYPE_FILE (1<<6)
# define FL_IS_FILE(_f_) (((_f_) & FL_TYPE_MASK) == FL_TYPE_FILE)
char fl_name[1];
};
/* A member_file represents a source file that is treated by mkid. */
struct member_file
{
struct file_link *mf_link;
struct lang_args const *mf_lang_args;
time_t mf_modify_time;
time_t mf_access_time;
short mf_index; /* order in ID file */
};
#if HAVE_LINK
/* On systems that support multiple names for a single file (via hard
and/or soft links), dev_ino records information needed to detect
such aliasing. */
struct dev_ino
{
dev_t di_dev;
ino_t di_ino;
struct file_link *di_link;
};
extern struct hash_table dev_ino_table;
#endif
extern struct idhead idh;
extern struct file_link **read_id_file __P((char const *id_file_name, struct idhead *idhp));
extern struct file_link **maybe_read_id_file __P((char const *id_file_name, struct idhead *idhp));
extern int read_idhead __P((struct idhead *idhp));
extern int write_idhead __P((struct idhead *idhp));
extern int sizeof_idhead __P((void));
extern void init_idh_obstacks __P((struct idhead *idhp));
extern void init_idh_tables __P((struct idhead *idhp));
#define IO_TYPE_INT 0 /* integer */
#define IO_TYPE_STR 1 /* NUL terminated string */
#define IO_TYPE_FIX 2 /* fix-sized */
extern int io_write __P((FILE *output_FILE, void *addr, unsigned int size, int io_type));
extern int io_read __P((FILE *input_FILE, void *addr, unsigned int size, int io_type));
extern struct file_link *get_current_dir_link __P((void));
extern struct file_link **deserialize_file_links __P((struct idhead *idhp));
extern void mark_member_file_links __P((struct idhead *idhp));
extern int member_file_qsort_compare __P((void const *x, void const *y));
extern void serialize_file_links __P((struct idhead *idhp));
extern struct file_link *parse_file_name __P((char *file_name,
struct file_link *relative_dir_link));
#endif /* not _idfile_h_ */
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