129 lines
3.1 KiB
C
129 lines
3.1 KiB
C
/**
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* debug.c
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*
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* Better debug log messages.
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*
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* (c) 2017 Simon Brooke <simon@journeyman.cc>
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* Licensed under GPL version 2.0, or, at your option, any later version.
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*/
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/*
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* wide characters
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*/
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#include <wchar.h>
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#include <wctype.h>
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#include "consspaceobject.h"
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#include "debug.h"
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#include "dump.h"
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#include "io.h"
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#include "print.h"
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/**
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* the controlling flags for `debug_print`; set in `init.c`, q.v.
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*/
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int verbosity = 0;
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/**
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* print this debug `message` to stderr, if `verbosity` matches `level`.
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* `verbosity is a set of flags, see debug_print.h; so you can
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* turn debugging on for only one part of the system.
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*/
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void debug_print( wchar_t *message, int level ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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fwide( stderr, 1 );
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fputws( message, stderr );
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}
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#endif
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}
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/**
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* stolen from https://stackoverflow.com/questions/11656241/how-to-print-uint128-t-number-using-gcc
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*/
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void debug_print_128bit( __int128_t n, int level ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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if ( n == 0 ) {
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fwprintf( stderr, L"0" );
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} else {
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char str[40] = { 0 }; // log10(1 << 128) + '\0'
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char *s = str + sizeof( str ) - 1; // start at the end
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while ( n != 0 ) {
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if ( s == str )
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return; // never happens
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*--s = "0123456789"[n % 10]; // save last digit
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n /= 10; // drop it
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}
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fwprintf( stderr, L"%s", s );
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}
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}
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#endif
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}
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/**
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* print a line feed to stderr, if `verbosity` matches `level`.
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* `verbosity is a set of flags, see debug_print.h; so you can
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* turn debugging on for only one part of the system.
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*/
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void debug_println( int level ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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fwide( stderr, 1 );
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fputws( L"\n", stderr );
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}
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#endif
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}
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/**
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* `wprintf` adapted for the debug logging system. Print to stderr only
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* `verbosity` matches `level`. All other arguments as for `wprintf`.
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*/
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void debug_printf( int level, wchar_t *format, ... ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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fwide( stderr, 1 );
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va_list( args );
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va_start( args, format );
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vfwprintf( stderr, format, args );
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}
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#endif
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}
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/**
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* print the object indicated by this `pointer` to stderr, if `verbosity`
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* matches `level`.`verbosity is a set of flags, see debug_print.h; so you can
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* turn debugging on for only one part of the system.
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*/
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void debug_print_object( struct cons_pointer pointer, int level ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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URL_FILE *ustderr = file_to_url_file( stderr );
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fwide( stderr, 1 );
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print( ustderr, pointer );
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free( ustderr );
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}
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#endif
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}
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/**
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* Like `dump_object`, q.v., but protected by the verbosity mechanism.
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*/
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void debug_dump_object( struct cons_pointer pointer, int level ) {
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#ifdef DEBUG
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if ( level & verbosity ) {
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URL_FILE *ustderr = file_to_url_file( stderr );
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fwide( stderr, 1 );
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dump_object( ustderr, pointer );
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free( ustderr );
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}
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#endif
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}
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