MessageLoader.cpp

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/*
 * Crossfire -- cooperative multi-player graphical RPG and adventure game
 *
 * Copyright (c) 2020 the Crossfire Development Team
 *
 * Crossfire is free software and comes with ABSOLUTELY NO WARRANTY. You are
 * welcome to redistribute it under certain conditions. For details, please
 * see COPYING and LICENSE.
 *
 * The authors can be reached via e-mail at <crossfire@metalforge.org>.
 */

#include "MessageLoader.h"
#include "Messages.h"

#include "global.h"
#include "compat.h"
#include "string.h"
#include "AssetsTracker.h"

MessageLoader::MessageLoader(Messages* messages, AssetsTracker *tracker) : m_messages(messages), m_tracker(tracker) {
}

void MessageLoader::load(BufferReader *reader, const std::string &filename) {
    char *buf, msgbuf[HUGE_BUF], *cp;
    int text = 0, nrofmsg = 0;

    LOG(llevDebug, "Reading messages from %s...\n", filename.c_str());

    GeneralMessage *tmp = NULL;

    while ((buf = bufferreader_next_line(reader)) != NULL) {
        if (*buf == '#' || (*buf == '\0' && !text))
            continue;

        // Remove trailing whitespace
        cp = buf + strlen(buf);
        while (cp > buf && (cp[-1] == ' ' || cp[-1] == '\t'))
            cp--;
        if (cp > buf) {
            *cp = '\0';
        }

        if (tmp != NULL) {
            if (text && strncmp(buf, "ENDMSG", 6) == 0) {
                if (strlen(msgbuf) > BOOK_BUF) {
                    LOG(llevDebug, "Warning: this string exceeded max book buf size:\n");
                    LOG(llevDebug, "  %s\n", msgbuf);
                }
                tmp->message = add_string(msgbuf);
                if (tmp->identifier[0] != '\n' && tmp->title == NULL) {
                    LOG(llevError, "Error: message can't have identifier without title, file %s on line %zu\n", filename.c_str(), bufferreader_current_line(reader));
                }
                tmp = m_messages->define(tmp->identifier, tmp);
                if (m_tracker) {
                    m_tracker->assetDefined(tmp, filename);
                }
                nrofmsg++;
                tmp = NULL;
                text = 0;
            } else if (text) {
                if (!buf_overflow(msgbuf, buf, HUGE_BUF-1)) {
                    strcat(msgbuf, buf);
                    strcat(msgbuf, "\n");
                } else {
                    LOG(llevInfo, "Warning: truncating book at %s, line %zu\n", filename.c_str(), bufferreader_current_line(reader));
                }
            } else if (strcmp(buf, "TEXT") == 0) {
                text = 1;
            } else if (strncmp(buf, "CHANCE ", 7) == 0) {
                tmp->chance = atoi(buf + 7);
            } else if (strncmp(buf, "TITLE ", 6) == 0) {
                tmp->title = add_string(buf + 6);
            } else if (strncmp(buf, "QUEST ", 6) == 0) {
                tmp->quest_code = add_string(buf + 6);
            } else if (strncmp(buf, "FACE ", 5) == 0) {
                const Face *face = find_face(buf + 5);
                tmp->face = face;
            } else {
                LOG(llevInfo, "Warning: unknown line %s, in file %s line %zu\n", buf, filename.c_str(), bufferreader_current_line(reader));
            }
        } else if (strncmp(buf, "MSG", 3) == 0) {
            tmp = (GeneralMessage *)calloc(1, sizeof(GeneralMessage));
            tmp->face = NULL;
            if (buf[3] == ' ') {
                int i = 4;
                while (buf[i] == ' ')
                    i++;
                if (buf[i] != '\0') {
                    tmp->identifier = add_string(buf + i);
                }
            }
            /* We need an identifier, so generate one from filename and line, that should be unique enough! */
            if (!tmp->identifier) {
                snprintf(msgbuf, sizeof(msgbuf), "\n%s\n%zu", filename.c_str(), bufferreader_current_line(reader));
                tmp->identifier = add_string(msgbuf);
            }
            strcpy(msgbuf, ""); /* reset msgbuf for new message */
        } else {
            LOG(llevInfo, "Warning: syntax error at %s, line %zu\n", filename.c_str(), bufferreader_current_line(reader));
        }
    }

    if (tmp != NULL) {
        LOG(llevError, "Invalid file %s", filename.c_str());
        fatal(SEE_LAST_ERROR);
    }

    LOG(llevDebug, "done messages %s, found %d messages.\n", filename.c_str(), nrofmsg);
}