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- /* lib.h: declarations for common, low-level routines in kpathsea.
-
- Copyright (C) 1992, 93, 94 Free Software Foundation, Inc.
-
- 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; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef KPATHSEA_LIB_H
- #define KPATHSEA_LIB_H
-
- #include <kpathsea/types.h>
-
- /* Define common sorts of messages. */
-
- /* This should be called only after a system call fails. Don't exit
- with status `errno', because that might be 256, which would mean
- success (exit statuses are truncated to eight bits). */
- #define FATAL_PERROR(s) do { perror (s); exit (EXIT_FAILURE); } while (0)
-
-
- #define START_FATAL() do { fputs ("fatal: ", stderr)
- #define END_FATAL() fputs (".\n", stderr); exit (1); } while (0)
-
- #define FATAL(str) \
- START_FATAL (); fputs (str, stderr); END_FATAL ()
- #define FATAL1(str, e1) \
- START_FATAL (); fprintf (stderr, str, e1); END_FATAL ()
- #define FATAL2(str, e1, e2) \
- START_FATAL (); fprintf (stderr, str, e1, e2); END_FATAL ()
- #define FATAL3(str, e1, e2, e3) \
- START_FATAL (); fprintf (stderr, str, e1, e2, e3); END_FATAL ()
- #define FATAL4(str, e1, e2, e3, e4) \
- START_FATAL (); fprintf (stderr, str, e1, e2, e3, e4); END_FATAL ()
- #define FATAL6(str, e1, e2, e3, e4, e5, e6) \
- START_FATAL (); fprintf (stderr, str, e1, e2, e3, e4, e5, e6); END_FATAL ()
-
-
- #define START_WARNING() do { fputs ("warning: ", stderr)
- #define END_WARNING() fputs (".\n", stderr); fflush (stderr); } while (0)
-
- #define WARNING(str) \
- START_WARNING (); fputs (str, stderr); END_WARNING ()
- #define WARNING1(str, e1) \
- START_WARNING (); fprintf (stderr, str, e1); END_WARNING ()
- #define WARNING2(str, e1, e2) \
- START_WARNING (); fprintf (stderr, str, e1, e2); END_WARNING ()
- #define WARNING3(str, e1, e2, e3) \
- START_WARNING (); fprintf (stderr, str, e1, e2, e3); END_WARNING ()
- #define WARNING4(str, e1, e2, e3, e4) \
- START_WARNING (); fprintf (stderr, str, e1, e2, e3, e4); END_WARNING ()
-
-
- /* I find this easier to read. */
- #define STREQ(s1, s2) (strcmp (s1, s2) == 0)
-
- /* This is the maximum number of numerals that result when a 64-bit
- integer is converted to a string, plus one for a trailing null byte,
- plus one for a sign. */
- #define MAX_INT_LENGTH 21
-
- /* If the environment variable TEST is set, return it; otherwise,
- DEFAULT. This is useful for paths that use more than one envvar. */
- #define ENVVAR(test, default) (getenv (test) ? (test) : (default))
-
- /* Return a fresh copy of S1 followed by S2, et al. */
- extern string concat P2H(const_string s1, const_string s2);
- extern string concat3 P3H(const_string, const_string, const_string);
- /* `concatn' is declared in its own include file, to avoid pulling in
- all the varargs stuff. */
-
- /* A fresh copy of just S. */
- extern string xstrdup P1H(const_string s);
-
- /* Convert all lowercase characters in S to uppercase. */
- extern string uppercasify P1H(const_string s);
-
- /* Convert the integer I to a string. */
- extern string itoa P1H(int i);
-
- /* True if FILENAME1 and FILENAME2 are the same file. If stat fails on
- either name, return false, no error message.
- Cf. `SAME_FILE_P' in xstat.h. */
- extern boolean same_file_p P2H(const_string filename1, const_string filename2);
-
- #ifndef HAVE_BASENAME
- /* Return NAME with any leading path stripped off. This returns a
- pointer into NAME. */
- extern const_string basename P1H(const_string name);
- #endif /* not HAVE_BASENAME */
-
- /* If NAME has a suffix, return a pointer to its first character (i.e.,
- the one after the `.'); otherwise, return NULL. */
- extern string find_suffix P1H(const_string name);
-
- /* Return NAME with any suffix removed. */
- extern string remove_suffix P1H(const_string name);
-
- /* Return S with the suffix SUFFIX, removing any suffix already present.
- For example, `make_suffix ("/foo/bar.baz", "karl")' returns
- `/foo/bar.karl'. Returns a string allocated with malloc. */
- extern string make_suffix P2H(const_string s, const_string suffix);
-
- /* Return NAME with STEM_PREFIX prepended to the stem. For example,
- `make_prefix ("/foo/bar.baz", "x")' returns `/foo/xbar.baz'.
- Returns a string allocated with malloc. */
- extern string make_prefix P2H(string stem_prefix, string name);
-
- /* If NAME has a suffix, simply return it; otherwise, return
- `NAME.SUFFIX'. */
- extern string extend_filename P2H(const_string name, const_string suffix);
-
- /* Call putenv with the string `VAR=VALUE' and abort on error. */
- extern void xputenv P2H(const_string var, const_string value);
- extern void xputenv_int P2H(const_string var, int value);
-
- /* Returns true if FN is a directory or a symlink to a directory. */
- extern boolean dir_p P1H(const_string fn);
-
- /* If FN is a readable directory, return the number of links it has.
- Otherwise, return -1. */
- extern int dir_links P1H(const_string fn);
-
- /* Like their stdio counterparts, but abort on error, after calling
- perror(3) with FILENAME as its argument. */
- extern FILE *xfopen P2H(const_string filename, const_string mode);
- extern void xfclose P2H(FILE *, const_string filename);
- extern void xfseek P4H(FILE *, long, int, string filename);
- extern unsigned long xftell P2H(FILE *, string filename);
-
-
- /* These call the corresponding function in the standard library, and
- abort if those routines fail. Also, `xrealloc' calls `xmalloc' if
- OLD_ADDRESS is null. */
- extern address xmalloc P1H(unsigned size);
- extern address xrealloc P2H(address old_address, unsigned new_size);
- extern address xcalloc P2H(unsigned nelem, unsigned elsize);
-
- /* (Re)Allocate N items of type T using xmalloc/xrealloc. */
- #define XTALLOC(n, t) ((t *) xmalloc ((n) * sizeof (t)))
- #define XTALLOC1(t) XTALLOC (1, t)
- #define XRETALLOC(addr, n, t) ((addr) = (t *) xrealloc (addr, (n) * sizeof(t)))
-
- #endif /* not KPATHSEA_LIB_H */
-