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/*
* Copyright (c) International Business Machines Corp., 2011
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: B. Rafanello
*
* Module: trace_indent.c
*
* Implements indentation for the trace output from bb_trace
*
* Version 0.0.0.1
*/
#include "trace_indent.h"
#include "stdio.h"
/*--------------------------------------------------
* Private Constants
--------------------------------------------------*/
#define DEFAULT_INDENT_SIZE 5
#define MAX_INDENT_SIZE 129
#define DEFAULT_INDENT " "
/*--------------------------------------------------
* Global variables.
--------------------------------------------------*/
/* The current trace level. */
unsigned char BB_TRACE_LEVEL = 0;
unsigned char BB_PREVIOUS_TRACE_LEVEL = 0;
/*--------------------------------------------------
* Private global variables.
--------------------------------------------------*/
static unsigned int Current_Indent_Level = 0;
static unsigned int Current_Indent_Size = DEFAULT_INDENT_SIZE;
static char Indent[MAX_INDENT_SIZE] = DEFAULT_INDENT;
/*--------------------------------------------------
* Public Functions
--------------------------------------------------*/
/*********************************************************************/
/* */
/* Function Name: Set_Indent_Size */
/* */
/* Descriptive Name: Sets the number of spaces to use per indent. */
/* If the current indent level is 5 and this */
/* function is called to set the indent size to */
/* 10, then 50 spaces will be printed by the */
/* trace macros before each line of trace */
/* output at this indent level. */
/* */
/* Input: unsigned int Spaces_Per_Indent - A value less than 128. */
/* */
/* Output: If Success : The specified value will be used for the */
/* size of an indent. */
/* */
/* If Failure : This should only happen if the value */
/* specified is >= 128, in which case it is */
/* ignored and the previous value is retained.*/
/* */
/* Error Handling: Bad values for Spaces_Per_Indent are ignored. */
/* */
/* Side Effects: The number of spaces per indent may be changed. */
/* */
/* Notes: */
/* */
/*********************************************************************/
void Set_Indent_Size(unsigned int Spaces_Per_Indent)
{
unsigned int i;
if (Spaces_Per_Indent <= MAX_INDENT_SIZE) {
Current_Indent_Size = Spaces_Per_Indent;
for (i = 0; i < Current_Indent_Size; i++) {
Indent[i] = ' ';
}
Indent[i] = 0x00;
}
return;
}
/*********************************************************************/
/* */
/* Function Name: Indent_Trace_Output */
/* */
/* Descriptive Name: This function increases the current indent */
/* level by one. */
/* */
/* Input: None. */
/* */
/* Output: If Success : None */
/* */
/* If Failure : None */
/* */
/* Error Handling: None */
/* */
/* Side Effects: The current indent level for trace output will */
/* be increased by 1. */
/* */
/* Notes: */
/* */
/*********************************************************************/
void Indent_Trace_Output(void)
{
Current_Indent_Level += 1;
return;
}
/*********************************************************************/
/* */
/* Function Name: Outdent_Trace_Output */
/* */
/* Descriptive Name: This function reduces the current indent */
/* level if it is greater than 0. */
/* */
/* Input: None */
/* */
/* Output: If Success : None */
/* */
/* If Failure : None */
/* */
/* Error Handling: If the current indent level is zero, then this */
/* function does nothing. */
/* */
/* Side Effects: The current indent level for trace output may be */
/* decreased by 1. */
/* */
/* Notes: */
/* */
/*********************************************************************/
void Outdent_Trace_Output(void)
{
if (Current_Indent_Level > 0)
Current_Indent_Level -= 1;
return;
}
/*********************************************************************/
/* */
/* Function Name: Do_Indent */
/* */
/* Descriptive Name: This function prints to stderr the number of */
/* spaces corresponding to the current indent */
/* level. */
/* */
/* Input: None */
/* */
/* Output: If Success : None */
/* */
/* If Failure : None */
/* */
/* Error Handling: None */
/* */
/* Side Effects: Some number of space may be output to stderr. */
/* */
/* Notes: */
/* */
/*********************************************************************/
void Do_Indent(void)
{
unsigned int i;
for (i = 0; i < Current_Indent_Level; i++) {
fprintf(stderr, "%s", Indent);
}
}
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