message.c

/*
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  This file is part of Etripator,
  copyright (c) 2009--2024 Vincent Cruz.
 
  Etripator 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.
 
  Etripator 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 Etripator.  If not, see <http://www.gnu.org/licenses/>.

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*/
#include "message.h"

#include <cwalk.h>

static MessagePrinter* g_message_printer_head = NULL;

/* Setup global message printer list.  */
void message_printer_init() {
    g_message_printer_head = NULL;
    // nothing much atm...
}

/* Releases the resources used by message printers. */
void message_printer_destroy() {
    for(MessagePrinter *it = g_message_printer_head; it != NULL; it = it->next) {
        if(it->close) {
            it->close();
        }
    }
    g_message_printer_head = NULL;
}

/* Adds a new message printer to the global list. */
bool message_printer_add(MessagePrinter *printer) {
    bool ret = false;
    if((printer != NULL) && (printer->open != NULL)) {
        ret = printer->open();
        if(ret) {
            printer->next = g_message_printer_head;
            g_message_printer_head = printer;
        }
    }
    return ret;
}

/* Dispatch messages to printers. */
void message_print(MessageType type, const char* file, size_t line, const char* function, const char* format, ...) {
    assert(file != NULL);
    assert(function != NULL);
    const char* filename;
    size_t length;
    cwk_path_get_basename(file, &filename, &length);
    if(filename == NULL) {
        filename = file;
    }
    for(MessagePrinter *it=g_message_printer_head; it != NULL; it = it->next) {
        if(it->output != NULL) {
            va_list args; 
            va_start(args, format);
            (void)it->output(type, filename, line, function, format, args);
            va_end(args);
        }
    }
}