added 3dengfx into the repo, probably not the correct version for this

[summerhack] / src / 3dengfx / src / common / err_msg.c

diff --git a/src/3dengfx/src/common/err_msg.c b/src/3dengfx/src/common/err_msg.c
new file mode 100644 (file)
index 0000000..78ddd63
--- /dev/null
+++ b/src/3dengfx/src/common/err_msg.c
@@ -0,0 +1,164 @@
+/*
+Copyright (c) 2004, 2005 John Tsiombikas <nuclear@siggraph.org>
+
+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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* Error messages and logging
+ *
+ * Author: John Tsiombikas 2004
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include "err_msg.h"
+
+#ifdef _MSC_VER
+#define vsnprintf(str, size, format, ap)       vsprintf(str, format, ap)
+#else
+int vsnprintf(char *str, size_t size, const char *format, va_list ap);
+#endif
+
+/* verbosity setting:
+ * 0 = do not output anything
+ * 1 = output only errors
+ * 2 = output errors and warnings
+ * 3 = output errors, warnings and informative messages
+ */
+
+static int verbosity = 3;
+static int log_verbosity = 4;
+
+static FILE *log_file;
+
+#define ERR_BUF_SIZE   4096
+static char err_buf[ERR_BUF_SIZE];
+
+#define MAX_LOG_FNAME  256
+static char log_fname[MAX_LOG_FNAME];
+
+static const char *default_log_fname(void) {
+#if defined(unix) || defined(__unix__)
+       return "/tmp/3dengfx.log";
+#elif defined(WIN32) || defined(__WIN32__)
+       return "3dengfx.log";
+#else
+       return "3dengfx.log";
+#endif
+}
+
+static int open_log_file() {
+       if(log_fname[0] == 0) {
+               set_log_filename(default_log_fname());
+       }
+       
+       if((log_file = fopen(log_fname, "a"))) {
+               setbuf(log_file, 0);
+       } else {
+               int prev_lv = log_verbosity;
+               log_verbosity = 0;
+               warning("could not open %s for writing", log_fname);
+               log_verbosity = prev_lv;
+       }
+
+       return log_file == 0 ? -1 : 0;
+}
+
+static void close_log_file() {
+       fclose(log_file);
+}
+
+void set_log_filename(const char *fname) {
+       strncpy(log_fname, fname, MAX_LOG_FNAME-1);
+}
+
+const char *get_log_filename(void) {
+       if(!*log_fname) {
+               return default_log_fname();
+       }
+       return log_fname;
+}
+
+void set_verbosity(int v) {
+       verbosity = v;
+}
+
+void set_log_verbosity(int v) {
+       log_verbosity = v;
+}
+
+void error(const char *str, ...) {
+       va_list arg_list;
+
+       strcpy(err_buf, "E: ");
+               
+       va_start(arg_list, str);
+       vsnprintf(err_buf+3, ERR_BUF_SIZE, str, arg_list);
+       va_end(arg_list);
+       
+       if(verbosity > 0) {
+               fputs(err_buf, stderr);
+               fputc('\n', stderr);
+       }
+
+       if(log_verbosity > 0 && open_log_file() != -1) {
+               fputs(err_buf, log_file);
+               fputc('\n', log_file);
+               close_log_file();
+       }
+}
+
+void warning(const char *str, ...) {
+       va_list arg_list;
+
+       strcpy(err_buf, "W: ");
+       
+       va_start(arg_list, str);
+       vsnprintf(err_buf+3, ERR_BUF_SIZE, str, arg_list);
+       va_end(arg_list);
+       
+       if(verbosity > 1) {
+               fputs(err_buf, stderr);
+               fputc('\n', stderr);
+       }
+
+       if(log_verbosity > 1 && open_log_file() != -1) {
+               fputs(err_buf, log_file);
+               fputc('\n', log_file);
+               close_log_file();
+       }
+}
+
+void info(const char *str, ...) {
+       va_list arg_list;
+
+       strcpy(err_buf, "I: ");
+       
+       va_start(arg_list, str);
+       vsnprintf(err_buf+3, ERR_BUF_SIZE, str, arg_list);
+       va_end(arg_list);
+       
+       if(verbosity > 2) {
+               fputs(err_buf, stdout);
+               fputc('\n', stdout);
+       }
+
+       if(log_verbosity > 2 && open_log_file() != -1) {
+               fputs(err_buf, log_file);
+               fputc('\n', log_file);
+               close_log_file();
+       }
+}