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glib/gutils.c
Josh MacDonald df9a49ec3c [Changes from josh to sync with his glib stuff -Yosh] 
Fri Jun 12 00:39:28 1998  Josh MacDonald  <jmacd@icw.EECS.Berkeley.EDU>

        * glib.h: add new hash and equal functions g_int_*.  complement
        g_direct_hash with g_direct_equal.

        * grel.c: new file, GRelations implement tuples of N-N mappings.
        A comment in glib.h briefly describes the interface.

        * ghash.c: new function, g_hash_table_size

        * glib.h: new typedefs, gsize, gssize, gtime.

        * garray.c: new functions implementing a simplified GArray.  This
        GPtrArray is an array of gpointers and has functions to add and
        remove elements, much like java.lang.Vector.

        * garray.c: new functions for the single-byte special case of
        GArray.  The functions g_byte_array* operate on arrays of bytes.
        Internally, a GArray is used.

        * testglib.c: tests for g_ptr_array, g_byte_array, and g_relation...
1998-06-12 09:38:32 +00:00

876 lines
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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <ctype.h> /* For tolower() */
#include "glib.h"
const guint glib_major_version = GLIB_MAJOR_VERSION;
const guint glib_minor_version = GLIB_MINOR_VERSION;
const guint glib_micro_version = GLIB_MICRO_VERSION;
extern char* g_vsprintf (const gchar *fmt, va_list *args, va_list *args2);
gchar*
g_strdup (const gchar *str)
{
gchar *new_str;
new_str = NULL;
if (str)
{
new_str = g_new (char, strlen (str) + 1);
strcpy (new_str, str);
}
return new_str;
}
gchar*
g_strconcat (const gchar *string1, ...)
{
guint l;
va_list args;
gchar *s;
gchar *concat;
g_return_val_if_fail (string1 != NULL, NULL);
l = 1 + strlen (string1);
va_start (args, string1);
s = va_arg (args, gchar*);
while (s)
{
l += strlen (s);
s = va_arg (args, gchar*);
}
va_end (args);
concat = g_new (gchar, l);
concat[0] = 0;
strcat (concat, string1);
va_start (args, string1);
s = va_arg (args, gchar*);
while (s)
{
strcat (concat, s);
s = va_arg (args, gchar*);
}
va_end (args);
return concat;
}
gdouble
g_strtod (const gchar *nptr,
gchar **endptr)
{
gchar *fail_pos_1;
gchar *fail_pos_2;
gdouble val_1;
gdouble val_2 = 0;
g_return_val_if_fail (nptr != NULL, 0);
fail_pos_1 = NULL;
fail_pos_2 = NULL;
val_1 = strtod (nptr, &fail_pos_1);
if (fail_pos_1 && fail_pos_1[0] != 0)
{
gchar *old_locale;
old_locale = setlocale (LC_NUMERIC, "C");
val_2 = strtod (nptr, &fail_pos_2);
setlocale (LC_NUMERIC, old_locale);
}
if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
{
if (endptr)
*endptr = fail_pos_1;
return val_1;
}
else
{
if (endptr)
*endptr = fail_pos_2;
return val_2;
}
}
gchar*
g_strerror (gint errnum)
{
static char msg[64];
#ifdef HAVE_STRERROR
return strerror (errnum);
#elif NO_SYS_ERRLIST
switch (errnum)
{
#ifdef E2BIG
case E2BIG: return "argument list too long";
#endif
#ifdef EACCES
case EACCES: return "permission denied";
#endif
#ifdef EADDRINUSE
case EADDRINUSE: return "address already in use";
#endif
#ifdef EADDRNOTAVAIL
case EADDRNOTAVAIL: return "can't assign requested address";
#endif
#ifdef EADV
case EADV: return "advertise error";
#endif
#ifdef EAFNOSUPPORT
case EAFNOSUPPORT: return "address family not supported by protocol family";
#endif
#ifdef EAGAIN
case EAGAIN: return "try again";
#endif
#ifdef EALIGN
case EALIGN: return "EALIGN";
#endif
#ifdef EALREADY
case EALREADY: return "operation already in progress";
#endif
#ifdef EBADE
case EBADE: return "bad exchange descriptor";
#endif
#ifdef EBADF
case EBADF: return "bad file number";
#endif
#ifdef EBADFD
case EBADFD: return "file descriptor in bad state";
#endif
#ifdef EBADMSG
case EBADMSG: return "not a data message";
#endif
#ifdef EBADR
case EBADR: return "bad request descriptor";
#endif
#ifdef EBADRPC
case EBADRPC: return "RPC structure is bad";
#endif
#ifdef EBADRQC
case EBADRQC: return "bad request code";
#endif
#ifdef EBADSLT
case EBADSLT: return "invalid slot";
#endif
#ifdef EBFONT
case EBFONT: return "bad font file format";
#endif
#ifdef EBUSY
case EBUSY: return "mount device busy";
#endif
#ifdef ECHILD
case ECHILD: return "no children";
#endif
#ifdef ECHRNG
case ECHRNG: return "channel number out of range";
#endif
#ifdef ECOMM
case ECOMM: return "communication error on send";
#endif
#ifdef ECONNABORTED
case ECONNABORTED: return "software caused connection abort";
#endif
#ifdef ECONNREFUSED
case ECONNREFUSED: return "connection refused";
#endif
#ifdef ECONNRESET
case ECONNRESET: return "connection reset by peer";
#endif
#if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
case EDEADLK: return "resource deadlock avoided";
#endif
#ifdef EDEADLOCK
case EDEADLOCK: return "resource deadlock avoided";
#endif
#ifdef EDESTADDRREQ
case EDESTADDRREQ: return "destination address required";
#endif
#ifdef EDIRTY
case EDIRTY: return "mounting a dirty fs w/o force";
#endif
#ifdef EDOM
case EDOM: return "math argument out of range";
#endif
#ifdef EDOTDOT
case EDOTDOT: return "cross mount point";
#endif
#ifdef EDQUOT
case EDQUOT: return "disk quota exceeded";
#endif
#ifdef EDUPPKG
case EDUPPKG: return "duplicate package name";
#endif
#ifdef EEXIST
case EEXIST: return "file already exists";
#endif
#ifdef EFAULT
case EFAULT: return "bad address in system call argument";
#endif
#ifdef EFBIG
case EFBIG: return "file too large";
#endif
#ifdef EHOSTDOWN
case EHOSTDOWN: return "host is down";
#endif
#ifdef EHOSTUNREACH
case EHOSTUNREACH: return "host is unreachable";
#endif
#ifdef EIDRM
case EIDRM: return "identifier removed";
#endif
#ifdef EINIT
case EINIT: return "initialization error";
#endif
#ifdef EINPROGRESS
case EINPROGRESS: return "operation now in progress";
#endif
#ifdef EINTR
case EINTR: return "interrupted system call";
#endif
#ifdef EINVAL
case EINVAL: return "invalid argument";
#endif
#ifdef EIO
case EIO: return "I/O error";
#endif
#ifdef EISCONN
case EISCONN: return "socket is already connected";
#endif
#ifdef EISDIR
case EISDIR: return "illegal operation on a directory";
#endif
#ifdef EISNAME
case EISNAM: return "is a name file";
#endif
#ifdef ELBIN
case ELBIN: return "ELBIN";
#endif
#ifdef EL2HLT
case EL2HLT: return "level 2 halted";
#endif
#ifdef EL2NSYNC
case EL2NSYNC: return "level 2 not synchronized";
#endif
#ifdef EL3HLT
case EL3HLT: return "level 3 halted";
#endif
#ifdef EL3RST
case EL3RST: return "level 3 reset";
#endif
#ifdef ELIBACC
case ELIBACC: return "can not access a needed shared library";
#endif
#ifdef ELIBBAD
case ELIBBAD: return "accessing a corrupted shared library";
#endif
#ifdef ELIBEXEC
case ELIBEXEC: return "can not exec a shared library directly";
#endif
#ifdef ELIBMAX
case ELIBMAX: return "attempting to link in more shared libraries than system limit";
#endif
#ifdef ELIBSCN
case ELIBSCN: return ".lib section in a.out corrupted";
#endif
#ifdef ELNRNG
case ELNRNG: return "link number out of range";
#endif
#ifdef ELOOP
case ELOOP: return "too many levels of symbolic links";
#endif
#ifdef EMFILE
case EMFILE: return "too many open files";
#endif
#ifdef EMLINK
case EMLINK: return "too many links";
#endif
#ifdef EMSGSIZE
case EMSGSIZE: return "message too long";
#endif
#ifdef EMULTIHOP
case EMULTIHOP: return "multihop attempted";
#endif
#ifdef ENAMETOOLONG
case ENAMETOOLONG: return "file name too long";
#endif
#ifdef ENAVAIL
case ENAVAIL: return "not available";
#endif
#ifdef ENET
case ENET: return "ENET";
#endif
#ifdef ENETDOWN
case ENETDOWN: return "network is down";
#endif
#ifdef ENETRESET
case ENETRESET: return "network dropped connection on reset";
#endif
#ifdef ENETUNREACH
case ENETUNREACH: return "network is unreachable";
#endif
#ifdef ENFILE
case ENFILE: return "file table overflow";
#endif
#ifdef ENOANO
case ENOANO: return "anode table overflow";
#endif
#if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
case ENOBUFS: return "no buffer space available";
#endif
#ifdef ENOCSI
case ENOCSI: return "no CSI structure available";
#endif
#ifdef ENODATA
case ENODATA: return "no data available";
#endif
#ifdef ENODEV
case ENODEV: return "no such device";
#endif
#ifdef ENOENT
case ENOENT: return "no such file or directory";
#endif
#ifdef ENOEXEC
case ENOEXEC: return "exec format error";
#endif
#ifdef ENOLCK
case ENOLCK: return "no locks available";
#endif
#ifdef ENOLINK
case ENOLINK: return "link has be severed";
#endif
#ifdef ENOMEM
case ENOMEM: return "not enough memory";
#endif
#ifdef ENOMSG
case ENOMSG: return "no message of desired type";
#endif
#ifdef ENONET
case ENONET: return "machine is not on the network";
#endif
#ifdef ENOPKG
case ENOPKG: return "package not installed";
#endif
#ifdef ENOPROTOOPT
case ENOPROTOOPT: return "bad proocol option";
#endif
#ifdef ENOSPC
case ENOSPC: return "no space left on device";
#endif
#ifdef ENOSR
case ENOSR: return "out of stream resources";
#endif
#ifdef ENOSTR
case ENOSTR: return "not a stream device";
#endif
#ifdef ENOSYM
case ENOSYM: return "unresolved symbol name";
#endif
#ifdef ENOSYS
case ENOSYS: return "function not implemented";
#endif
#ifdef ENOTBLK
case ENOTBLK: return "block device required";
#endif
#ifdef ENOTCONN
case ENOTCONN: return "socket is not connected";
#endif
#ifdef ENOTDIR
case ENOTDIR: return "not a directory";
#endif
#ifdef ENOTEMPTY
case ENOTEMPTY: return "directory not empty";
#endif
#ifdef ENOTNAM
case ENOTNAM: return "not a name file";
#endif
#ifdef ENOTSOCK
case ENOTSOCK: return "socket operation on non-socket";
#endif
#ifdef ENOTTY
case ENOTTY: return "inappropriate device for ioctl";
#endif
#ifdef ENOTUNIQ
case ENOTUNIQ: return "name not unique on network";
#endif
#ifdef ENXIO
case ENXIO: return "no such device or address";
#endif
#ifdef EOPNOTSUPP
case EOPNOTSUPP: return "operation not supported on socket";
#endif
#ifdef EPERM
case EPERM: return "not owner";
#endif
#ifdef EPFNOSUPPORT
case EPFNOSUPPORT: return "protocol family not supported";
#endif
#ifdef EPIPE
case EPIPE: return "broken pipe";
#endif
#ifdef EPROCLIM
case EPROCLIM: return "too many processes";
#endif
#ifdef EPROCUNAVAIL
case EPROCUNAVAIL: return "bad procedure for program";
#endif
#ifdef EPROGMISMATCH
case EPROGMISMATCH: return "program version wrong";
#endif
#ifdef EPROGUNAVAIL
case EPROGUNAVAIL: return "RPC program not available";
#endif
#ifdef EPROTO
case EPROTO: return "protocol error";
#endif
#ifdef EPROTONOSUPPORT
case EPROTONOSUPPORT: return "protocol not suppored";
#endif
#ifdef EPROTOTYPE
case EPROTOTYPE: return "protocol wrong type for socket";
#endif
#ifdef ERANGE
case ERANGE: return "math result unrepresentable";
#endif
#if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
case EREFUSED: return "EREFUSED";
#endif
#ifdef EREMCHG
case EREMCHG: return "remote address changed";
#endif
#ifdef EREMDEV
case EREMDEV: return "remote device";
#endif
#ifdef EREMOTE
case EREMOTE: return "pathname hit remote file system";
#endif
#ifdef EREMOTEIO
case EREMOTEIO: return "remote i/o error";
#endif
#ifdef EREMOTERELEASE
case EREMOTERELEASE: return "EREMOTERELEASE";
#endif
#ifdef EROFS
case EROFS: return "read-only file system";
#endif
#ifdef ERPCMISMATCH
case ERPCMISMATCH: return "RPC version is wrong";
#endif
#ifdef ERREMOTE
case ERREMOTE: return "object is remote";
#endif
#ifdef ESHUTDOWN
case ESHUTDOWN: return "can't send afer socket shutdown";
#endif
#ifdef ESOCKTNOSUPPORT
case ESOCKTNOSUPPORT: return "socket type not supported";
#endif
#ifdef ESPIPE
case ESPIPE: return "invalid seek";
#endif
#ifdef ESRCH
case ESRCH: return "no such process";
#endif
#ifdef ESRMNT
case ESRMNT: return "srmount error";
#endif
#ifdef ESTALE
case ESTALE: return "stale remote file handle";
#endif
#ifdef ESUCCESS
case ESUCCESS: return "Error 0";
#endif
#ifdef ETIME
case ETIME: return "timer expired";
#endif
#ifdef ETIMEDOUT
case ETIMEDOUT: return "connection timed out";
#endif
#ifdef ETOOMANYREFS
case ETOOMANYREFS: return "too many references: can't splice";
#endif
#ifdef ETXTBSY
case ETXTBSY: return "text file or pseudo-device busy";
#endif
#ifdef EUCLEAN
case EUCLEAN: return "structure needs cleaning";
#endif
#ifdef EUNATCH
case EUNATCH: return "protocol driver not attached";
#endif
#ifdef EUSERS
case EUSERS: return "too many users";
#endif
#ifdef EVERSION
case EVERSION: return "version mismatch";
#endif
#if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
case EWOULDBLOCK: return "operation would block";
#endif
#ifdef EXDEV
case EXDEV: return "cross-domain link";
#endif
#ifdef EXFULL
case EXFULL: return "message tables full";
#endif
}
#else /* NO_SYS_ERRLIST */
extern int sys_nerr;
extern char *sys_errlist[];
if ((errnum > 0) && (errnum <= sys_nerr))
return sys_errlist [errnum];
#endif /* NO_SYS_ERRLIST */
sprintf (msg, "unknown error (%d)", errnum);
return msg;
}
gchar*
g_strsignal (gint signum)
{
static char msg[64];
#ifdef HAVE_STRSIGNAL
extern char *strsignal (int sig);
return strsignal (signum);
#elif NO_SYS_SIGLIST
switch (signum)
{
#ifdef SIGHUP
case SIGHUP: return "Hangup";
#endif
#ifdef SIGINT
case SIGINT: return "Interrupt";
#endif
#ifdef SIGQUIT
case SIGQUIT: return "Quit";
#endif
#ifdef SIGILL
case SIGILL: return "Illegal instruction";
#endif
#ifdef SIGTRAP
case SIGTRAP: return "Trace/breakpoint trap";
#endif
#ifdef SIGABRT
case SIGABRT: return "IOT trap/Abort";
#endif
#ifdef SIGBUS
case SIGBUS: return "Bus error";
#endif
#ifdef SIGFPE
case SIGFPE: return "Floating point exception";
#endif
#ifdef SIGKILL
case SIGKILL: return "Killed";
#endif
#ifdef SIGUSR1
case SIGUSR1: return "User defined signal 1";
#endif
#ifdef SIGSEGV
case SIGSEGV: return "Segmentation fault";
#endif
#ifdef SIGUSR2
case SIGUSR2: return "User defined signal 2";
#endif
#ifdef SIGPIPE
case SIGPIPE: return "Broken pipe";
#endif
#ifdef SIGALRM
case SIGALRM: return "Alarm clock";
#endif
#ifdef SIGTERM
case SIGTERM: return "Terminated";
#endif
#ifdef SIGSTKFLT
case SIGSTKFLT: return "Stack fault";
#endif
#ifdef SIGCHLD
case SIGCHLD: return "Child exited";
#endif
#ifdef SIGCONT
case SIGCONT: return "Continued";
#endif
#ifdef SIGSTOP
case SIGSTOP: return "Stopped (signal)";
#endif
#ifdef SIGTSTP
case SIGTSTP: return "Stopped";
#endif
#ifdef SIGTTIN
case SIGTTIN: return "Stopped (tty input)";
#endif
#ifdef SIGTTOU
case SIGTTOU: return "Stopped (tty output)";
#endif
#ifdef SIGURG
case SIGURG: return "Urgent condition";
#endif
#ifdef SIGXCPU
case SIGXCPU: return "CPU time limit exceeded";
#endif
#ifdef SIGXFSZ
case SIGXFSZ: return "File size limit exceeded";
#endif
#ifdef SIGVTALRM
case SIGVTALRM: return "Virtual time alarm";
#endif
#ifdef SIGPROF
case SIGPROF: return "Profile signal";
#endif
#ifdef SIGWINCH
case SIGWINCH: return "Window size changed";
#endif
#ifdef SIGIO
case SIGIO: return "Possible I/O";
#endif
#ifdef SIGPWR
case SIGPWR: return "Power failure";
#endif
#ifdef SIGUNUSED
case SIGUNUSED: return "Unused signal";
#endif
}
#else /* NO_SYS_SIGLIST */
extern char *sys_siglist[];
return sys_siglist [signum];
#endif /* NO_SYS_SIGLIST */
sprintf (msg, "unknown signal (%d)", signum);
return msg;
}
gint
g_snprintf (gchar *str,
gulong n,
gchar const *fmt,
...)
{
#ifdef HAVE_VSNPRINTF
va_list args;
gint retval;
va_start (args, fmt);
retval = vsnprintf (str, n, fmt, args);
va_end (args);
return retval;
#else
gchar *printed;
va_list args, args2;
va_start (args, fmt);
va_start (args2, fmt);
printed = g_vsprintf (fmt, &args, &args2);
strncpy (str, printed, n);
str[n-1] = '\0';
va_end (args2);
va_end (args);
return strlen (str);
#endif
}
void
g_strdown (gchar *string)
{
register gchar *s;
g_return_if_fail (string != NULL);
s = string;
while (*s)
{
*s = tolower (*s);
s++;
}
}
void
g_strup (gchar *string)
{
register gchar *s;
g_return_if_fail (string != NULL);
s = string;
while (*s)
{
*s = toupper (*s);
s++;
}
}
void
g_strreverse (gchar *string)
{
g_return_if_fail (string != NULL);
if (*string)
{
register gchar *h, *t;
h = string;
t = string + strlen (string) - 1;
while (h < t)
{
register gchar c;
c = *h;
*h = *t;
h++;
*t = c;
t--;
}
}
}
gint
g_strcasecmp (const gchar *s1,
const gchar *s2)
{
#ifdef HAVE_STRCASECMP
return strcasecmp (s1, s2);
#else
gint c1, c2;
while (*s1 && *s2)
{
/* According to A. Cox, some platforms have islower's that
* don't work right on non-uppercase
*/
c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
if (c1 != c2)
return (c1 - c2);
s1++; s2++;
}
return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
#endif
}
void
g_strdelimit (gchar *string,
const gchar *delimiters,
gchar new_delim)
{
register gchar *c;
g_return_if_fail (string != NULL);
if (!delimiters)
delimiters = G_STR_DELIMITERS;
for (c = string; *c; c++)
{
if (strchr (delimiters, *c))
*c = new_delim;
}
}
guint
g_parse_debug_string (const gchar *string,
GDebugKey *keys,
guint nkeys)
{
guint i;
guint result = 0;
g_return_val_if_fail (string != NULL, 0);
if (!g_strcasecmp (string, "all"))
{
for (i=0; i<nkeys; i++)
result |= keys[i].value;
}
else
{
gchar *str = g_strdup (string);
gchar *p = str;
gchar *q;
gboolean done = FALSE;
while (*p && !done)
{
q = strchr (p, ':');
if (!q)
{
q = p + strlen(p);
done = TRUE;
}
*q = 0;
for (i=0; i<nkeys; i++)
if (!g_strcasecmp(keys[i].key, p))
result |= keys[i].value;
p = q+1;
}
g_free (str);
}
return result;
}
guint
g_direct_hash(gconstpointer v)
{
return GPOINTER_TO_UINT (v);
}
gint
g_direct_equal(gconstpointer v, gconstpointer v2)
{
return GPOINTER_TO_UINT (v) == GPOINTER_TO_UINT (v2);
}
gint
g_int_equal (gconstpointer v, gconstpointer v2)
{
return *((const gint*) v) == *((const gint*) v2);
}
guint
g_int_hash (gconstpointer v)
{
return *(const gint*) v;
}
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