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/**
* @file gensvm_print.c
* @author G.J.J. van den Burg
* @date 2014-01-07
* @brief Various print functions for printing to output streams
*
* @details
* This file contains several utility functions for coordinating input and
* output of data and model files. It also contains string functions.
*
* @copyright
Copyright 2016, G.J.J. van den Burg.
This file is part of GenSVM.
GenSVM 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 3 of the License, or
(at your option) any later version.
GenSVM 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 GenSVM. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gensvm_print.h"
FILE *GENSVM_OUTPUT_FILE = NULL; ///< The #GENSVM_OUTPUT_FILE specifies the
///< output stream to which all output is
///< written. This is done through the
///< function note(). The
///< advantage of using a global output
///< stream variable is that the output can
///< temporarily be suppressed by importing
///< this variable through @c extern and
///< (temporarily) setting it to NULL.
FILE *GENSVM_ERROR_FILE = NULL; ///< The #GENSVM_ERROR_FILE specifies the
///< output stream to use when writing an
///< error. Typically this is stderr, but
///< when unit testing we can temporarily
///< redirect this to check if the correct
///< output is written.
/**
* @brief Parse a formatted string and write to the output stream
*
* @details
* This function is a replacement of fprintf(), such that the output stream
* does not have to be specified at each function call. The functionality is
* exactly the same however.
*
* @param[in] fmt String format
* @param[in] ... variable argument list for the string format
*
*/
void note(const char *fmt,...)
{
char buf[BUFSIZ];
va_list ap;
va_start(ap,fmt);
vsprintf(buf,fmt,ap);
va_end(ap);
if (GENSVM_OUTPUT_FILE != NULL) {
fputs(buf, GENSVM_OUTPUT_FILE);
fflush(GENSVM_OUTPUT_FILE);
}
}
/**
* @brief Parse a formatted string and write it to standard error
*
* @details
* Shorthand for fprintf(GENSVM_ERROR_FILE, ...)
*
* @param[in] fmt string format
* @param[in] ... variable argument list for the string format
*/
void err(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list ap;
va_start(ap, fmt);
vsprintf(buf, fmt, ap);
va_end(ap);
if (GENSVM_ERROR_FILE != NULL) {
fputs(buf, GENSVM_ERROR_FILE);
fflush(GENSVM_ERROR_FILE);
}
}
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