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/******************************************************************************
* Project: PROJ.4
* Purpose: Implementation of pj_log() function.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2010, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "proj.h"
#include "proj_internal.h"
/************************************************************************/
/* pj_stderr_logger() */
/************************************************************************/
void pj_stderr_logger( void *app_data, int level, const char *msg )
{
(void) app_data;
(void) level;
fprintf( stderr, "%s\n", msg );
}
/************************************************************************/
/* pj_vlog() */
/************************************************************************/
void pj_vlog( PJ_CONTEXT *ctx, int level, const char *fmt, va_list args );
/* Workhorse for the log functions - relates to pj_log as vsprintf relates to sprintf */
void pj_vlog( PJ_CONTEXT *ctx, int level, const char *fmt, va_list args )
{
char *msg_buf;
int debug_level = ctx->debug_level;
int shutup_unless_errno_set = debug_level < 0;
/* For negative debug levels, we first start logging when errno is set */
if (ctx->last_errno==0 && shutup_unless_errno_set)
return;
if (debug_level < 0)
debug_level = -debug_level;
if( level > debug_level )
return;
msg_buf = (char *) malloc(100000);
if( msg_buf == nullptr )
return;
/* we should use vsnprintf where available once we add configure detect.*/
vsprintf( msg_buf, fmt, args );
ctx->logger( ctx->logger_app_data, level, msg_buf );
free( msg_buf );
}
/************************************************************************/
/* pj_log() */
/************************************************************************/
void pj_log( PJ_CONTEXT *ctx, int level, const char *fmt, ... )
{
va_list args;
if( level > ctx->debug_level )
return;
va_start( args, fmt );
pj_vlog( ctx, level, fmt, args );
va_end( args );
}
/***************************************************************************************/
PJ_LOG_LEVEL proj_log_level (PJ_CONTEXT *ctx, PJ_LOG_LEVEL log_level) {
/****************************************************************************************
Set logging level 0-3. Higher number means more debug info. 0 turns it off
****************************************************************************************/
PJ_LOG_LEVEL previous;
if (nullptr==ctx)
ctx = pj_get_default_ctx();
if (nullptr==ctx)
return PJ_LOG_TELL;
previous = static_cast<PJ_LOG_LEVEL>(abs (ctx->debug_level));
if (PJ_LOG_TELL==log_level)
return previous;
ctx->debug_level = log_level;
return previous;
}
/*****************************************************************************/
static std::string add_short_name_prefix(const PJ* P, const char* fmt)
/*****************************************************************************/
{
if( P->short_name == nullptr )
return fmt;
std::string ret(P->short_name);
ret += ": ";
ret += fmt;
return ret;
}
/*****************************************************************************/
void proj_log_error (const PJ *P, const char *fmt, ...) {
/******************************************************************************
For reporting the most severe events.
******************************************************************************/
va_list args;
va_start( args, fmt );
pj_vlog (pj_get_ctx ((PJ*)P), PJ_LOG_ERROR , add_short_name_prefix(P, fmt).c_str(), args);
va_end( args );
}
/*****************************************************************************/
void proj_log_debug (PJ *P, const char *fmt, ...) {
/******************************************************************************
For reporting debugging information.
******************************************************************************/
va_list args;
va_start( args, fmt );
pj_vlog (pj_get_ctx (P), PJ_LOG_DEBUG , add_short_name_prefix(P, fmt).c_str(), args);
va_end( args );
}
/*****************************************************************************/
void proj_context_log_debug (PJ_CONTEXT *ctx, const char *fmt, ...) {
/******************************************************************************
For reporting debugging information.
******************************************************************************/
va_list args;
va_start( args, fmt );
pj_vlog (ctx, PJ_LOG_DEBUG , fmt, args);
va_end( args );
}
/*****************************************************************************/
void proj_log_trace (PJ *P, const char *fmt, ...) {
/******************************************************************************
For reporting embarrassingly detailed debugging information.
******************************************************************************/
va_list args;
va_start( args, fmt );
pj_vlog (pj_get_ctx (P), PJ_LOG_TRACE , add_short_name_prefix(P, fmt).c_str(), args);
va_end( args );
}
/*****************************************************************************/
void proj_log_func (PJ_CONTEXT *ctx, void *app_data, PJ_LOG_FUNCTION logf) {
/******************************************************************************
Put a new logging function into P's context. The opaque object app_data is
passed as first arg at each call to the logger
******************************************************************************/
if (nullptr==ctx)
ctx = pj_get_default_ctx ();
ctx->logger_app_data = app_data;
if (nullptr!=logf)
ctx->logger = logf;
}
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