1/*
2 * Copyright (c) 1992, Brian Berliner and Jeff Polk
3 * Copyright (c) 1989-1992, Brian Berliner
4 * Copyright (c) 2004, Derek R. Price and Ximbiot <http://ximbiot.com>
5 * Copyright (c) 1989-2004 The Free Software Foundation <http://gnu.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 */
17
18#ifndef SUBR_H
19# define SUBR_H
20
21void expand_string (char **, size_t *, size_t);
22char *Xreadlink (const char *link, size_t size);
23void xrealloc_and_strcat (char **, size_t *, const char *);
24int strip_trailing_newlines (char *str);
25int pathname_levels (const char *path);
26void free_names (int *pargc, char *argv[]);
27void line2argv (int *pargc, char ***argv, char *line, char *sepchars);
28int numdots (const char *s);
29int compare_revnums (const char *, const char *);
30char *increment_revnum (const char *);
31char *getcaller (void);
32char *previous_rev (RCSNode *rcs, const char *rev);
33char *gca (const char *rev1, const char *rev2);
34void check_numeric (const char *, int, char **);
35char *make_message_rcsvalid (const char *message);
36int file_has_markers (const struct file_info *);
37void get_file (const char *, const char *, const char *,
38               char **, size_t *, size_t *);
39void resolve_symlink (char **filename);
40char *backup_file (const char *file, const char *suffix);
41char *shell_escape (char *buf, const char *str);
42void sleep_past (time_t desttime);
43
44/* for format_cmdline function - when a list variable is bound to a user string,
45 * we need to pass some data through walklist into the callback function.
46 * We use this struct.
47 */
48struct format_cmdline_walklist_closure
49{
50    const char *format;	/* the format string the user passed us */
51    char **buf;		/* *dest = our NUL terminated and possibly too short
52			 * destination string
53			 */
54    size_t *length;	/* *dlen = how many bytes have already been allocated to
55			 * *dest.
56			 */
57    char **d;		/* our pointer into buf where the next char should go */
58    char quotes;	/* quotes we are currently between, if any */
59#ifdef SUPPORT_OLD_INFO_FMT_STRINGS
60    int onearg;
61    int firstpass;
62    const char *srepos;
63#endif /* SUPPORT_OLD_INFO_FMT_STRINGS */
64    void *closure;	/* our user defined closure */
65};
66char *cmdlinequote (char quotes, char *s);
67char *cmdlineescape (char quotes, char *s);
68#ifdef SUPPORT_OLD_INFO_FMT_STRINGS
69char *format_cmdline (bool oldway, const char *srepos, const char *format, ...);
70#else /* SUPPORT_OLD_INFO_FMT_STRINGS */
71char *format_cmdline (const char *format, ...);
72#endif /* SUPPORT_OLD_INFO_FMT_STRINGS */
73
74/* Many, many CVS calls to xstrdup depend on it to return NULL when its
75 * argument is NULL.
76 */
77#define xstrdup Xstrdup
78char *Xstrdup (const char *str)
79	__attribute__ ((__malloc__));
80
81char *Xasprintf (const char *format, ...)
82	__attribute__ ((__malloc__, __format__ (__printf__, 1, 2)));
83char *Xasnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
84        __attribute__ ((__malloc__, __format__ (__printf__, 3, 4)));
85bool readBool (const char *infopath, const char *option,
86	       const char *p, bool *val);
87
88FILE *xfopen (const char *, const char *);
89char *xcanonicalize_file_name (const char *path);
90bool isThisHost (const char *otherhost);
91bool isSamePath (const char *path1_in, const char *path2_in);
92#endif /* !SUBR_H */
93