ede/etip/Fortune.cpp

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/*
* $Id$
*
* Etip, show some tips!
* Part of Equinox Desktop Environment (EDE).
* Copyright (c) 2008 EDE Authors.
*
* This program is licensed under the terms of the
* GNU General Public License version 2 or newer.
* See COPYING for the details.
*/
#include "Fortune.h"
#include <netinet/in.h>
#include <ctype.h>
FortuneFile* fortune_open(const char* str_path, const char* dat_path) {
FILE* sp = fopen(str_path, "r");
if(!sp)
return NULL;
FILE* dp = fopen(dat_path, "r");
if(!dp) {
fclose(sp);
return NULL;
}
FortuneFile* f = new FortuneFile;
f->str_file = sp;
f->dat_file = dp;
fread((char*)&f->data, sizeof(StrFile), 1, f->dat_file);
f->data.str_version = ntohl(f->data.str_version);
f->data.str_numstr = ntohl(f->data.str_numstr);
f->data.str_longlen = ntohl(f->data.str_longlen);
f->data.str_shortlen = ntohl(f->data.str_shortlen);
f->data.str_flags = ntohl(f->data.str_flags);
return f;
}
void fortune_close(FortuneFile* f) {
fclose(f->str_file);
fclose(f->dat_file);
delete f;
}
unsigned int fortune_num_items(FortuneFile* f) {
return f->data.str_numstr;
}
bool fortune_get(FortuneFile* f, unsigned int num, edelib::String& ret) {
if(num >= fortune_num_items(f))
return false;
// read position from .dat file
off_t seek_pts[2];
fseek(f->dat_file, (long)(sizeof(StrFile) + num * sizeof(seek_pts[0])), 0);
fread(seek_pts, sizeof(seek_pts), 1, f->dat_file);
seek_pts[0] = ntohl(seek_pts[0]);
seek_pts[1] = ntohl(seek_pts[1]);
// now jump to that position in string file
fseek(f->str_file, (long)seek_pts[0], 0);
char buff[1024];
char* p;
char ch;
ret.clear();
while(fgets((char*)buff, sizeof(buff), f->str_file) != NULL && !STR_ENDSTRING(buff, f->data)) {
if(f->data.str_flags & STR_ROTATED) {
for(p = buff; (ch = *p); p++) {
if(isupper(ch))
*p = 'A' + (ch - 'A' + 13) % 26;
else if(islower(ch))
*p = 'a' + (ch - 'a' + 13) % 26;
}
}
ret += buff;
}
return true;
}