| /* 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 Lesser 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser 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. |
| */ |
| |
| /* |
| * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
| * file for a list of people on the GLib Team. See the ChangeLog |
| * files for a list of changes. These files are distributed with |
| * GLib at ftp://ftp.gtk.org/pub/gtk/. |
| */ |
| |
| /* |
| * MT safe |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include "glib.h" |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <signal.h> |
| #include <locale.h> |
| #include <errno.h> |
| |
| |
| /* --- structures --- */ |
| typedef struct _GLogDomain GLogDomain; |
| typedef struct _GLogHandler GLogHandler; |
| struct _GLogDomain |
| { |
| gchar *log_domain; |
| GLogLevelFlags fatal_mask; |
| GLogHandler *handlers; |
| GLogDomain *next; |
| }; |
| struct _GLogHandler |
| { |
| guint id; |
| GLogLevelFlags log_level; |
| GLogFunc log_func; |
| gpointer data; |
| GLogHandler *next; |
| }; |
| |
| |
| /* --- prototypes --- */ |
| static inline guint printf_string_upper_bound (const gchar *format, |
| gboolean may_warn, |
| va_list args); |
| |
| |
| /* --- variables --- */ |
| |
| static GMutex* g_messages_lock = NULL; |
| |
| const gchar *g_log_domain_glib = "GLib"; |
| static GLogDomain *g_log_domains = NULL; |
| static GLogLevelFlags g_log_always_fatal = G_LOG_FATAL_MASK; |
| static GPrintFunc glib_print_func = NULL; |
| static GPrintFunc glib_printerr_func = NULL; |
| static GErrorFunc glib_error_func = NULL; |
| static GWarningFunc glib_warning_func = NULL; |
| static GPrintFunc glib_message_func = NULL; |
| |
| static GPrivate* g_log_depth = NULL; |
| |
| |
| /* --- functions --- */ |
| #ifdef G_OS_WIN32 |
| # define STRICT |
| # include <windows.h> |
| # include <process.h> /* For _getpid() */ |
| |
| static gboolean alloc_console_called = FALSE; |
| |
| static gboolean gonna_abort = FALSE; |
| |
| /* This default message will usually be overwritten. */ |
| /* Yes, a fixed size buffer is bad. So sue me. But g_error is never |
| * with huge strings, is it? */ |
| static char fatal_msg_buf[1000] = "Unspecified fatal error encountered, aborting."; |
| static char *fatal_msg_ptr = fatal_msg_buf; |
| |
| /* Just use stdio. If we're out of memory, we're hosed anyway. */ |
| #undef write |
| static inline int |
| dowrite (FILE *fd, |
| const void *buf, |
| unsigned int len) |
| { |
| if (gonna_abort) |
| { |
| memcpy (fatal_msg_ptr, buf, len); |
| fatal_msg_ptr += len; |
| *fatal_msg_ptr = 0; |
| return len; |
| } |
| |
| fwrite (buf, len, 1, fd); |
| fflush (fd); |
| |
| return len; |
| } |
| |
| #define write(fd, buf, len) dowrite(fd, buf, len) |
| |
| static void |
| ensure_stdout_valid (void) |
| { |
| HANDLE handle; |
| |
| if (gonna_abort) |
| return; |
| |
| if (!alloc_console_called) |
| { |
| handle = GetStdHandle (STD_OUTPUT_HANDLE); |
| |
| if (handle == INVALID_HANDLE_VALUE) |
| { |
| AllocConsole (); |
| alloc_console_called = TRUE; |
| freopen ("CONOUT$", "w", stdout); |
| } |
| } |
| } |
| #else |
| #define ensure_stdout_valid() /* Define as empty */ |
| #endif |
| |
| static inline GLogDomain* |
| g_log_find_domain (const gchar *log_domain) |
| { |
| register GLogDomain *domain; |
| |
| g_mutex_lock (g_messages_lock); |
| domain = g_log_domains; |
| while (domain) |
| { |
| if (strcmp (domain->log_domain, log_domain) == 0) |
| { |
| g_mutex_unlock (g_messages_lock); |
| return domain; |
| } |
| domain = domain->next; |
| } |
| g_mutex_unlock (g_messages_lock); |
| return NULL; |
| } |
| |
| static inline GLogDomain* |
| g_log_domain_new (const gchar *log_domain) |
| { |
| register GLogDomain *domain; |
| |
| domain = g_new (GLogDomain, 1); |
| domain->log_domain = g_strdup (log_domain); |
| domain->fatal_mask = G_LOG_FATAL_MASK; |
| domain->handlers = NULL; |
| |
| g_mutex_lock (g_messages_lock); |
| domain->next = g_log_domains; |
| g_log_domains = domain; |
| g_mutex_unlock (g_messages_lock); |
| |
| return domain; |
| } |
| |
| static inline void |
| g_log_domain_check_free (GLogDomain *domain) |
| { |
| if (domain->fatal_mask == G_LOG_FATAL_MASK && |
| domain->handlers == NULL) |
| { |
| register GLogDomain *last, *work; |
| |
| last = NULL; |
| |
| g_mutex_lock (g_messages_lock); |
| work = g_log_domains; |
| while (work) |
| { |
| if (work == domain) |
| { |
| if (last) |
| last->next = domain->next; |
| else |
| g_log_domains = domain->next; |
| g_free (domain->log_domain); |
| g_free (domain); |
| break; |
| } |
| last = work; |
| work = last->next; |
| } |
| g_mutex_unlock (g_messages_lock); |
| } |
| } |
| |
| static inline GLogFunc |
| g_log_domain_get_handler (GLogDomain *domain, |
| GLogLevelFlags log_level, |
| gpointer *data) |
| { |
| if (domain && log_level) |
| { |
| register GLogHandler *handler; |
| |
| handler = domain->handlers; |
| while (handler) |
| { |
| if ((handler->log_level & log_level) == log_level) |
| { |
| *data = handler->data; |
| return handler->log_func; |
| } |
| handler = handler->next; |
| } |
| } |
| return g_log_default_handler; |
| } |
| |
| GLogLevelFlags |
| g_log_set_always_fatal (GLogLevelFlags fatal_mask) |
| { |
| GLogLevelFlags old_mask; |
| |
| /* restrict the global mask to levels that are known to glib */ |
| fatal_mask &= (1 << G_LOG_LEVEL_USER_SHIFT) - 1; |
| /* force errors to be fatal */ |
| fatal_mask |= G_LOG_LEVEL_ERROR; |
| /* remove bogus flag */ |
| fatal_mask &= ~G_LOG_FLAG_FATAL; |
| |
| g_mutex_lock (g_messages_lock); |
| old_mask = g_log_always_fatal; |
| g_log_always_fatal = fatal_mask; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_mask; |
| } |
| |
| GLogLevelFlags |
| g_log_set_fatal_mask (const gchar *log_domain, |
| GLogLevelFlags fatal_mask) |
| { |
| GLogLevelFlags old_flags; |
| register GLogDomain *domain; |
| |
| if (!log_domain) |
| log_domain = ""; |
| |
| /* force errors to be fatal */ |
| fatal_mask |= G_LOG_LEVEL_ERROR; |
| /* remove bogus flag */ |
| fatal_mask &= ~G_LOG_FLAG_FATAL; |
| |
| domain = g_log_find_domain (log_domain); |
| if (!domain) |
| domain = g_log_domain_new (log_domain); |
| old_flags = domain->fatal_mask; |
| |
| domain->fatal_mask = fatal_mask; |
| g_log_domain_check_free (domain); |
| |
| return old_flags; |
| } |
| |
| guint |
| g_log_set_handler (const gchar *log_domain, |
| GLogLevelFlags log_levels, |
| GLogFunc log_func, |
| gpointer user_data) |
| { |
| register GLogDomain *domain; |
| register GLogHandler *handler; |
| static guint handler_id = 0; |
| |
| g_return_val_if_fail ((log_levels & G_LOG_LEVEL_MASK) != 0, 0); |
| g_return_val_if_fail (log_func != NULL, 0); |
| |
| if (!log_domain) |
| log_domain = ""; |
| |
| domain = g_log_find_domain (log_domain); |
| if (!domain) |
| domain = g_log_domain_new (log_domain); |
| |
| handler = g_new (GLogHandler, 1); |
| g_mutex_lock (g_messages_lock); |
| handler->id = ++handler_id; |
| g_mutex_unlock (g_messages_lock); |
| handler->log_level = log_levels; |
| handler->log_func = log_func; |
| handler->data = user_data; |
| handler->next = domain->handlers; |
| domain->handlers = handler; |
| |
| return handler_id; |
| } |
| |
| void |
| g_log_remove_handler (const gchar *log_domain, |
| guint handler_id) |
| { |
| register GLogDomain *domain; |
| |
| g_return_if_fail (handler_id > 0); |
| |
| if (!log_domain) |
| log_domain = ""; |
| |
| domain = g_log_find_domain (log_domain); |
| if (domain) |
| { |
| register GLogHandler *work, *last; |
| |
| last = NULL; |
| work = domain->handlers; |
| while (work) |
| { |
| if (work->id == handler_id) |
| { |
| if (last) |
| last->next = work->next; |
| else |
| domain->handlers = work->next; |
| g_free (work); |
| g_log_domain_check_free (domain); |
| return; |
| } |
| last = work; |
| work = last->next; |
| } |
| } |
| g_warning ("g_log_remove_handler(): could not find handler with id `%d' for domain \"%s\"", |
| handler_id, |
| log_domain); |
| } |
| |
| void |
| g_logv (const gchar *log_domain, |
| GLogLevelFlags log_level, |
| const gchar *format, |
| va_list args1) |
| { |
| va_list args2; |
| gchar buffer[1025]; |
| register gint i; |
| |
| log_level &= G_LOG_LEVEL_MASK; |
| if (!log_level) |
| return; |
| |
| /* we use a stack buffer of fixed size, because we might get called |
| * recursively. |
| */ |
| G_VA_COPY (args2, args1); |
| if (printf_string_upper_bound (format, FALSE, args1) < 1024) |
| vsprintf (buffer, format, args2); |
| else |
| { |
| /* since we might be out of memory, we can't use g_vsnprintf(). */ |
| #ifdef HAVE_VSNPRINTF |
| vsnprintf (buffer, 1024, format, args2); |
| #else /* !HAVE_VSNPRINTF */ |
| /* we are out of luck here */ |
| strncpy (buffer, format, 1024); |
| #endif /* !HAVE_VSNPRINTF */ |
| buffer[1024] = 0; |
| } |
| va_end (args2); |
| |
| for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i)) |
| { |
| register GLogLevelFlags test_level; |
| |
| test_level = 1 << i; |
| if (log_level & test_level) |
| { |
| guint depth = GPOINTER_TO_UINT (g_private_get (g_log_depth)); |
| GLogDomain *domain; |
| GLogFunc log_func; |
| gpointer data = NULL; |
| |
| domain = g_log_find_domain (log_domain ? log_domain : ""); |
| |
| if (depth) |
| test_level |= G_LOG_FLAG_RECURSION; |
| |
| depth++; |
| g_private_set (g_log_depth, GUINT_TO_POINTER (depth)); |
| |
| g_mutex_lock (g_messages_lock); |
| if ((((domain ? domain->fatal_mask : G_LOG_FATAL_MASK) | |
| g_log_always_fatal) & test_level) != 0) |
| test_level |= G_LOG_FLAG_FATAL; |
| g_mutex_unlock (g_messages_lock); |
| |
| log_func = g_log_domain_get_handler (domain, test_level, &data); |
| log_func (log_domain, test_level, buffer, data); |
| |
| /* *domain can be cluttered now */ |
| |
| if (test_level & G_LOG_FLAG_FATAL) |
| { |
| #if defined (G_ENABLE_DEBUG) && defined (SIGTRAP) |
| if (!(test_level & G_LOG_FLAG_RECURSION)) |
| raise (SIGTRAP); |
| else |
| abort (); |
| #else /* !G_ENABLE_DEBUG || !SIGTRAP */ |
| #ifdef G_OS_WIN32 |
| MessageBox (NULL, fatal_msg_buf, NULL, MB_OK); |
| #endif |
| abort (); |
| #endif /* !G_ENABLE_DEBUG || !SIGTRAP */ |
| } |
| |
| depth--; |
| g_private_set (g_log_depth, GUINT_TO_POINTER (depth)); |
| } |
| } |
| } |
| |
| void |
| g_log (const gchar *log_domain, |
| GLogLevelFlags log_level, |
| const gchar *format, |
| ...) |
| { |
| va_list args; |
| |
| va_start (args, format); |
| g_logv (log_domain, log_level, format, args); |
| va_end (args); |
| } |
| |
| void |
| g_log_default_handler (const gchar *log_domain, |
| GLogLevelFlags log_level, |
| const gchar *message, |
| gpointer unused_data) |
| { |
| #ifdef G_OS_WIN32 |
| FILE *fd; |
| #else |
| gint fd; |
| #endif |
| gboolean in_recursion; |
| gboolean is_fatal; |
| GErrorFunc local_glib_error_func; |
| GWarningFunc local_glib_warning_func; |
| GPrintFunc local_glib_message_func; |
| gchar prg_pid[64], *prg_name = g_get_prgname (); |
| |
| in_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0; |
| is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0; |
| log_level &= G_LOG_LEVEL_MASK; |
| |
| if (!message) |
| message = "g_log_default_handler(): (NULL) message"; |
| if (!prg_name) |
| { |
| prg_name = "(process"; |
| sprintf (prg_pid, ":%u): ", getpid ()); |
| } |
| else |
| sprintf (prg_pid, " (pid:%u): ", getpid ()); |
| |
| #ifdef G_OS_WIN32 |
| /* Use just stdout as stderr is hard to get redirected from the |
| * DOS prompt. |
| */ |
| fd = stdout; |
| gonna_abort = is_fatal; |
| #else |
| fd = (log_level > G_LOG_LEVEL_MESSAGE) ? 1 : 2; |
| #endif |
| |
| g_mutex_lock (g_messages_lock); |
| local_glib_error_func = glib_error_func; |
| local_glib_warning_func = glib_warning_func; |
| local_glib_message_func = glib_message_func; |
| g_mutex_unlock (g_messages_lock); |
| |
| switch (log_level) |
| { |
| case G_LOG_LEVEL_ERROR: |
| if (!log_domain && local_glib_error_func) |
| { |
| /* compatibility code */ |
| local_glib_error_func (message); |
| return; |
| } |
| /* use write(2) for output, in case we are out of memeory */ |
| ensure_stdout_valid (); |
| write (fd, "\n", 1); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| else |
| write (fd, "** ", 3); |
| if (in_recursion) |
| write (fd, "ERROR (recursed) **: ", 21); |
| else |
| write (fd, "ERROR **: ", 10); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| case G_LOG_LEVEL_CRITICAL: |
| ensure_stdout_valid (); |
| write (fd, "\n", 1); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| else |
| write (fd, "** ", 3); |
| if (in_recursion) |
| write (fd, "CRITICAL (recursed) **: ", 24); |
| else |
| write (fd, "CRITICAL **: ", 13); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| case G_LOG_LEVEL_WARNING: |
| if (!log_domain && local_glib_warning_func) |
| { |
| /* compatibility code */ |
| local_glib_warning_func (message); |
| return; |
| } |
| ensure_stdout_valid (); |
| write (fd, "\n", 1); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| else |
| write (fd, "** ", 3); |
| if (in_recursion) |
| write (fd, "WARNING (recursed) **: ", 23); |
| else |
| write (fd, "WARNING **: ", 12); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| case G_LOG_LEVEL_MESSAGE: |
| if (!log_domain && local_glib_message_func) |
| { |
| /* compatibility code */ |
| local_glib_message_func (message); |
| return; |
| } |
| ensure_stdout_valid (); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| if (in_recursion) |
| write (fd, "Message (recursed): ", 20); |
| else |
| write (fd, "Message: ", 9); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| case G_LOG_LEVEL_INFO: |
| ensure_stdout_valid (); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| if (in_recursion) |
| write (fd, "INFO (recursed): ", 17); |
| else |
| write (fd, "INFO: ", 6); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| case G_LOG_LEVEL_DEBUG: |
| ensure_stdout_valid (); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| write (fd, "-", 1); |
| } |
| if (in_recursion) |
| write (fd, "DEBUG (recursed): ", 18); |
| else |
| write (fd, "DEBUG: ", 7); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| default: |
| /* we are used for a log level that is not defined by GLib itself, |
| * try to make the best out of it. |
| */ |
| ensure_stdout_valid (); |
| #ifdef G_ENABLE_MSG_PREFIX |
| write (fd, prg_name, strlen (prg_name)); |
| write (fd, prg_pid, strlen (prg_pid)); |
| #endif /* G_ENABLE_MSG_PREFIX */ |
| if (log_domain) |
| { |
| write (fd, log_domain, strlen (log_domain)); |
| if (in_recursion) |
| write (fd, "-LOG (recursed:", 15); |
| else |
| write (fd, "-LOG (", 6); |
| } |
| else if (in_recursion) |
| write (fd, "LOG (recursed:", 14); |
| else |
| write (fd, "LOG (", 5); |
| if (log_level) |
| { |
| gchar string[] = "0x00): "; |
| gchar *p = string + 2; |
| guint i; |
| |
| i = g_bit_nth_msf (log_level, -1); |
| *p = i >> 4; |
| p++; |
| *p = '0' + (i & 0xf); |
| if (*p > '9') |
| *p += 'A' - '9' - 1; |
| |
| write (fd, string, 7); |
| } |
| else |
| write (fd, "): ", 3); |
| write (fd, message, strlen (message)); |
| if (is_fatal) |
| write (fd, "\naborting...\n", 13); |
| else |
| write (fd, "\n", 1); |
| break; |
| } |
| } |
| |
| GPrintFunc |
| g_set_print_handler (GPrintFunc func) |
| { |
| GPrintFunc old_print_func; |
| |
| g_mutex_lock (g_messages_lock); |
| old_print_func = glib_print_func; |
| glib_print_func = func; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_print_func; |
| } |
| |
| void |
| g_print (const gchar *format, |
| ...) |
| { |
| va_list args; |
| gchar *string; |
| GPrintFunc local_glib_print_func; |
| |
| g_return_if_fail (format != NULL); |
| |
| va_start (args, format); |
| string = g_strdup_vprintf (format, args); |
| va_end (args); |
| |
| g_mutex_lock (g_messages_lock); |
| local_glib_print_func = glib_print_func; |
| g_mutex_unlock (g_messages_lock); |
| |
| if (local_glib_print_func) |
| local_glib_print_func (string); |
| else |
| { |
| ensure_stdout_valid (); |
| fputs (string, stdout); |
| fflush (stdout); |
| } |
| g_free (string); |
| } |
| |
| GPrintFunc |
| g_set_printerr_handler (GPrintFunc func) |
| { |
| GPrintFunc old_printerr_func; |
| |
| g_mutex_lock (g_messages_lock); |
| old_printerr_func = glib_printerr_func; |
| glib_printerr_func = func; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_printerr_func; |
| } |
| |
| void |
| g_printerr (const gchar *format, |
| ...) |
| { |
| va_list args; |
| gchar *string; |
| GPrintFunc local_glib_printerr_func; |
| |
| g_return_if_fail (format != NULL); |
| |
| va_start (args, format); |
| string = g_strdup_vprintf (format, args); |
| va_end (args); |
| |
| g_mutex_lock (g_messages_lock); |
| local_glib_printerr_func = glib_printerr_func; |
| g_mutex_unlock (g_messages_lock); |
| |
| if (local_glib_printerr_func) |
| local_glib_printerr_func (string); |
| else |
| { |
| fputs (string, stderr); |
| fflush (stderr); |
| } |
| g_free (string); |
| } |
| |
| /* compatibility code */ |
| GErrorFunc |
| g_set_error_handler (GErrorFunc func) |
| { |
| GErrorFunc old_error_func; |
| |
| g_mutex_lock (g_messages_lock); |
| old_error_func = glib_error_func; |
| glib_error_func = func; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_error_func; |
| } |
| |
| /* compatibility code */ |
| GWarningFunc |
| g_set_warning_handler (GWarningFunc func) |
| { |
| GWarningFunc old_warning_func; |
| |
| g_mutex_lock (g_messages_lock); |
| old_warning_func = glib_warning_func; |
| glib_warning_func = func; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_warning_func; |
| } |
| |
| /* compatibility code */ |
| GPrintFunc |
| g_set_message_handler (GPrintFunc func) |
| { |
| GPrintFunc old_message_func; |
| |
| g_mutex_lock (g_messages_lock); |
| old_message_func = glib_message_func; |
| glib_message_func = func; |
| g_mutex_unlock (g_messages_lock); |
| |
| return old_message_func; |
| } |
| |
| #ifndef MB_LEN_MAX |
| # define MB_LEN_MAX 8 |
| #endif |
| |
| typedef struct |
| { |
| guint min_width; |
| guint precision; |
| gboolean alternate_format, zero_padding, adjust_left, locale_grouping; |
| gboolean add_space, add_sign, possible_sign, seen_precision; |
| gboolean mod_half, mod_long, mod_extra_long; |
| } PrintfArgSpec; |
| |
| static inline guint |
| printf_string_upper_bound (const gchar *format, |
| gboolean may_warn, |
| va_list args) |
| { |
| static const gboolean honour_longs = SIZEOF_LONG > 4 || SIZEOF_VOID_P > 4; |
| guint len = 1; |
| |
| if (!format) |
| return len; |
| |
| while (*format) |
| { |
| register gchar c = *format++; |
| |
| if (c != '%') |
| len += 1; |
| else /* (c == '%') */ |
| { |
| PrintfArgSpec spec = { 0, }; |
| gboolean seen_l = FALSE, conv_done = FALSE; |
| guint conv_len = 0; |
| const gchar *spec_start = format; |
| |
| do |
| { |
| c = *format++; |
| switch (c) |
| { |
| GDoubleIEEE754 u_double; |
| guint v_uint; |
| gint v_int; |
| gchar *v_string; |
| |
| /* beware of positional parameters |
| */ |
| case '$': |
| if (may_warn) |
| g_warning (G_GNUC_PRETTY_FUNCTION |
| "(): unable to handle positional parameters (%%n$)"); |
| len += 1024; /* try adding some safety padding */ |
| break; |
| |
| /* parse flags |
| */ |
| case '#': |
| spec.alternate_format = TRUE; |
| break; |
| case '0': |
| spec.zero_padding = TRUE; |
| break; |
| case '-': |
| spec.adjust_left = TRUE; |
| break; |
| case ' ': |
| spec.add_space = TRUE; |
| break; |
| case '+': |
| spec.add_sign = TRUE; |
| break; |
| case '\'': |
| spec.locale_grouping = TRUE; |
| break; |
| |
| /* parse output size specifications |
| */ |
| case '.': |
| spec.seen_precision = TRUE; |
| break; |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| v_uint = c - '0'; |
| c = *format; |
| while (c >= '0' && c <= '9') |
| { |
| format++; |
| v_uint = v_uint * 10 + c - '0'; |
| c = *format; |
| } |
| if (spec.seen_precision) |
| spec.precision = MAX (spec.precision, v_uint); |
| else |
| spec.min_width = MAX (spec.min_width, v_uint); |
| break; |
| case '*': |
| v_int = va_arg (args, int); |
| if (spec.seen_precision) |
| { |
| /* forget about negative precision */ |
| if (v_int >= 0) |
| spec.precision = MAX (spec.precision, v_int); |
| } |
| else |
| { |
| if (v_int < 0) |
| { |
| v_int = - v_int; |
| spec.adjust_left = TRUE; |
| } |
| spec.min_width = MAX (spec.min_width, v_int); |
| } |
| break; |
| |
| /* parse type modifiers |
| */ |
| case 'h': |
| spec.mod_half = TRUE; |
| break; |
| case 'l': |
| if (!seen_l) |
| { |
| spec.mod_long = TRUE; |
| seen_l = TRUE; |
| break; |
| } |
| /* else, fall through */ |
| case 'L': |
| case 'q': |
| spec.mod_long = TRUE; |
| spec.mod_extra_long = TRUE; |
| break; |
| case 'z': |
| case 'Z': |
| #if GLIB_SIZEOF_SIZE_T > 4 |
| spec.mod_long = TRUE; |
| spec.mod_extra_long = TRUE; |
| #endif /* GLIB_SIZEOF_SIZE_T > 4 */ |
| break; |
| case 't': |
| #if GLIB_SIZEOF_PTRDIFF_T > 4 |
| spec.mod_long = TRUE; |
| spec.mod_extra_long = TRUE; |
| #endif /* GLIB_SIZEOF_PTRDIFF_T > 4 */ |
| break; |
| case 'j': |
| #if GLIB_SIZEOF_INTMAX_T > 4 |
| spec.mod_long = TRUE; |
| spec.mod_extra_long = TRUE; |
| #endif /* GLIB_SIZEOF_INTMAX_T > 4 */ |
| break; |
| |
| /* parse output conversions |
| */ |
| case '%': |
| conv_len += 1; |
| break; |
| case 'O': |
| case 'D': |
| case 'I': |
| case 'U': |
| /* some C libraries feature long variants for these as well? */ |
| spec.mod_long = TRUE; |
| /* fall through */ |
| case 'o': |
| conv_len += 2; |
| /* fall through */ |
| case 'd': |
| case 'i': |
| conv_len += 1; /* sign */ |
| /* fall through */ |
| case 'u': |
| conv_len += 4; |
| /* fall through */ |
| case 'x': |
| case 'X': |
| spec.possible_sign = TRUE; |
| conv_len += 10; |
| if (spec.mod_long && honour_longs) |
| conv_len *= 2; |
| if (spec.mod_extra_long) |
| conv_len *= 2; |
| if (spec.mod_extra_long) |
| { |
| #ifdef G_HAVE_GINT64 |
| (void) va_arg (args, gint64); |
| #else /* !G_HAVE_GINT64 */ |
| (void) va_arg (args, long); |
| #endif /* !G_HAVE_GINT64 */ |
| } |
| else if (spec.mod_long) |
| (void) va_arg (args, long); |
| else |
| (void) va_arg (args, int); |
| break; |
| case 'A': |
| case 'a': |
| /* 0x */ |
| conv_len += 2; |
| /* fall through */ |
| case 'g': |
| case 'G': |
| case 'e': |
| case 'E': |
| case 'f': |
| spec.possible_sign = TRUE; |
| /* n . dddddddddddddddddddddddd E +- eeee */ |
| conv_len += 1 + 1 + MAX (24, spec.precision) + 1 + 1 + 4; |
| if (may_warn && spec.mod_extra_long) |
| g_warning (G_GNUC_PRETTY_FUNCTION |
| "(): unable to handle long double, collecting double only"); |
| #ifdef HAVE_LONG_DOUBLE |
| #error need to implement special handling for long double |
| #endif |
| u_double.v_double = va_arg (args, double); |
| /* %f can expand up to all significant digits before '.' (308) */ |
| if (c == 'f' && |
| u_double.mpn.biased_exponent > 0 && u_double.mpn.biased_exponent < 2047) |
| { |
| gint exp = u_double.mpn.biased_exponent; |
| |
| exp -= G_IEEE754_DOUBLE_BIAS; |
| exp = exp * G_LOG_2_BASE_10 + 1; |
| conv_len += exp; |
| } |
| /* some printf() implementations require extra padding for rounding */ |
| conv_len += 2; |
| /* we can't really handle locale specific grouping here */ |
| if (spec.locale_grouping) |
| conv_len *= 2; |
| break; |
| case 'C': |
| spec.mod_long = TRUE; |
| /* fall through */ |
| case 'c': |
| conv_len += spec.mod_long ? MB_LEN_MAX : 1; |
| (void) va_arg (args, int); |
| break; |
| case 'S': |
| spec.mod_long = TRUE; |
| /* fall through */ |
| case 's': |
| v_string = va_arg (args, char*); |
| if (!v_string) |
| conv_len += 8; /* hold "(null)" */ |
| else if (spec.seen_precision) |
| conv_len += spec.precision; |
| else |
| conv_len += strlen (v_string); |
| conv_done = TRUE; |
| if (spec.mod_long) |
| { |
| if (may_warn) |
| g_warning (G_GNUC_PRETTY_FUNCTION |
| "(): unable to handle wide char strings"); |
| len += 1024; /* try adding some safety padding */ |
| } |
| break; |
| case 'P': /* do we actually need this? */ |
| /* fall through */ |
| case 'p': |
| spec.alternate_format = TRUE; |
| conv_len += 10; |
| if (honour_longs) |
| conv_len *= 2; |
| /* fall through */ |
| case 'n': |
| conv_done = TRUE; |
| (void) va_arg (args, void*); |
| break; |
| case 'm': |
| /* there's not much we can do to be clever */ |
| v_string = g_strerror (errno); |
| v_uint = v_string ? strlen (v_string) : 0; |
| conv_len += MAX (256, v_uint); |
| break; |
| |
| /* handle invalid cases |
| */ |
| case '\000': |
| /* no conversion specification, bad bad */ |
| conv_len += format - spec_start; |
| break; |
| default: |
| if (may_warn) |
| g_warning (G_GNUC_PRETTY_FUNCTION |
| "(): unable to handle `%c' while parsing format", |
| c); |
| break; |
| } |
| conv_done |= conv_len > 0; |
| } |
| while (!conv_done); |
| /* handle width specifications */ |
| conv_len = MAX (conv_len, MAX (spec.precision, spec.min_width)); |
| /* handle flags */ |
| conv_len += spec.alternate_format ? 2 : 0; |
| conv_len += (spec.add_space || spec.add_sign || spec.possible_sign); |
| /* finally done */ |
| len += conv_len; |
| } /* else (c == '%') */ |
| } /* while (*format) */ |
| |
| return len; |
| } |
| |
| guint |
| g_printf_string_upper_bound (const gchar *format, |
| va_list args) |
| { |
| return printf_string_upper_bound (format, TRUE, args); |
| } |
| |
| void |
| g_messages_init (void) |
| { |
| g_messages_lock = g_mutex_new(); |
| g_log_depth = g_private_new(NULL); |
| } |