path: root/mbbsd/i18n.c

#include "bbs.h"

/* Created by Chia-Kuang Yu, Apr 26th, 2004 */

#define MAX_LANGFILE_SIZE (512 * 1024)
#define MAX_STRING_LEN 4096
#define MAX_BUFFER_SIZE (MAX_LANG * MAX_STRING * 20)

#ifdef I18N
int parse_hex(unsigned char *buf, unsigned char *ret) {
    unsigned char table[] = "0123456789ABCDEF";
    unsigned char digit[2];
    char ptr[2];
    digit[0] = toupper(*buf);
    digit[1] = toupper(*(buf + 1));
    if ((ptr[0] = strchr(table, digit[0])) && 
        (ptr[1] = strchr(table, digit[1]))) {
        *ret = (char)((ptr[0] - table) << 4 + (ptr[1] - table));
        return 0;
    }
    return -1;
}

int parse_oct(unsigned char *buf, unsigned char *ret) {
    int i;
    *ret = 0;
    for (i = 0; i < 3; i++) {
        if (buf[i] - '0' < 0 && buf[i] - '0' > 8)
            return -1;
        *ret = (char)(*ret * 8 + buf[i] - '0');
    }
    return 0;
}
unsigned char parse_escape(char *buf, int *length) {
    unsigned char input[] = "abfnrtv\\?'\"";
    unsigned char output[] = "\a\b\f\n\r\t\v\\\?\'\"";
    unsigned char ret = *buf;
    *length = 1;
    for (unsigned char *ptr = input; *ptr != 0; ptr++)
        if (*buf == *ptr)
            return output[ptr - input];
    
    /* hexidecimal number*/
    if (*buf == 'x')
        if (parse_hex(buf + 1, &ret) != -1)
            length = 2; 
                
    /* octal number */
    else if(isdigit(*buf))
        if (parse_oct(buf, &ret) != -1)
            length = 3;
    return ret;
}

void load_language(char *filename, char *lang_str[MAX_STRING], int *_offset) {
    int i, num_string, string_index, filesize;
    int inside_string, digit, length;
    char *buf, *start, temp[256];
    char escape_sequence;
    FILE *f;    
    char *p_str_head = SHM->i18nstrbody;
    int offset = *_offset;
    sprintf (temp, "~bbs/etc/%s", filename);
    f = fopen(temp, "r");
    if (f) {
        if ((buf = (char *)(malloc(sizeof(char) * MAX_LANGFILE_SIZE)))) {
            num_string = string_index = 0;
            memset(lang_str, 0, sizeof(char *) * MAX_STRING);
            filesize = fread(buf, 1, MAX_LANGFILE_SIZE, f);
            inside_string = string_index = 0;
            for (i = 0; i < filesize; i++) {
                if (isdigit(buf[i]) && inside_string == FALSE) {
                    string_index = string_index * 10 + buf[i] - '0';
                    digit++;    
                }
                else if (buf[i] == '"' && inside_string == FALSE) {
                    inside_string = TRUE;
                    start = p_str_head + offset;
                    continue;
                }
                else if (inside_string == TRUE
                            && buf[i] == '"' && buf[i -1] == '\\' && buf[i - 2] != '\\') {
                }
                else if (i < filesize - 1 && buf[i] == '\\' && buf[i + 1] == '\n') {
                    i++;
                    continue;
                }
                else if (buf[i] == '"' && inside_string == TRUE) {
                    inside_string = FALSE;
                    p_str_head[offset] = 0;
                    if (string_index >= 0 && string_index < MAX_STRING) {
                        lang_str[string_index] = start;
                    }
                    string_index = 0;
                    offset++;
                    continue;
                }
                else if (buf[i] == '\\' && inside_string == TRUE) {
                    escape_sequence = parse_escape(buf + i + 1, &length);
                    i += length;
                    buf[i] = escape_sequence;
                }
                if (inside_string == TRUE) {
                    if (offset < MAX_BUFFER_SIZE) {
                        p_str_head[offset] = buf[i];
                        offset++;
                    }
                }
            }   
            for (i = 0; i < MAX_STRING; i++)
                if (lang_str[i] == 0)
                    lang_str[i] = p_str_head;
            free(buf);
        }
        else
            printf("Warning: out of memory!!\n");
        fclose(f);      
    }
    else {
        printf ("Warning: %s doesn't exist!!\n", buf);
    }
    *_offset = offset;
}

char *lang_file[] = {LANG_FILE};
void load_i18nstring() {
    int i, offset;
    *SHM->i18nstrbody = 0;
    offset = 1;
    for (i = 0; i < MAX_LANG; i++)
        load_language(lang_file[i], SHM->i18nstr[i], &offset);
}
#endif