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/********************************************************************\
* BitlBee -- An IRC to other IM-networks gateway *
* *
* Copyright 2002-2009 Wilmer van der Gaast and others *
\********************************************************************/
/* Help file control */
/*
This program 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 2 of the License, or
(at your option) any later version.
This program 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 with
the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
if not, write to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307 USA
*/
#define BITLBEE_CORE
#include "bitlbee.h"
#undef read
#undef write
#define BUFSIZE 1100
help_t *help_init( help_t **help, const char *helpfile )
{
int i, buflen = 0;
help_t *h;
char *s, *t;
time_t mtime;
struct stat stat[1];
*help = h = g_new0 ( help_t, 1 );
h->fd = open( helpfile, O_RDONLY
#ifdef _WIN32
| O_BINARY
#endif
);
if( h->fd == -1 )
{
g_free( h );
return( *help = NULL );
}
if( fstat( h->fd, stat ) != 0 )
{
g_free( h );
return( *help = NULL );
}
mtime = stat->st_mtime;
s = g_new (char, BUFSIZE + 1 );
s[BUFSIZE] = 0;
while( ( ( i = read( h->fd, s + buflen, BUFSIZE - buflen ) ) > 0 ) ||
( i == 0 && strstr( s, "\n%\n" ) ) )
{
buflen += i;
memset( s + buflen, 0, BUFSIZE - buflen );
if( !( t = strstr( s, "\n%\n" ) ) || s[0] != '?' )
{
/* FIXME: Clean up */
help_free( help );
g_free( s );
return NULL;
}
i = strchr( s, '\n' ) - s;
if( h->title )
{
h = h->next = g_new0( help_t, 1 );
}
h->title = g_new ( char, i );
strncpy( h->title, s + 1, i - 1 );
h->title[i-1] = 0;
h->fd = (*help)->fd;
h->offset.file_offset = lseek( h->fd, 0, SEEK_CUR ) - buflen + i + 1;
h->length = t - s - i - 1;
h->mtime = mtime;
buflen -= ( t + 3 - s );
t = g_strdup( t + 3 );
g_free( s );
s = g_renew( char, t, BUFSIZE + 1 );
s[BUFSIZE] = 0;
}
g_free( s );
return( *help );
}
void help_free( help_t **help )
{
help_t *h, *oh;
int last_fd = -1; /* Weak de-dupe */
if( help == NULL || *help == NULL )
return;
h = *help;
while( h )
{
if( h->fd != last_fd )
{
close( h->fd );
last_fd = h->fd;
}
g_free( h->title );
h = (oh=h)->next;
g_free( oh );
}
*help = NULL;
}
char *help_get( help_t **help, char *title )
{
time_t mtime;
struct stat stat[1];
help_t *h;
for( h = *help; h; h = h->next )
{
if( h->title != NULL && g_strcasecmp( h->title, title ) == 0 )
break;
}
if( h && h->length > 0 )
{
char *s = g_new( char, h->length + 1 );
s[h->length] = 0;
if( h->fd >= 0 )
{
if( fstat( h->fd, stat ) != 0 )
{
g_free( s );
return NULL;
}
mtime = stat->st_mtime;
if( mtime > h->mtime )
{
g_free( s );
return NULL;
}
lseek( h->fd, h->offset.file_offset, SEEK_SET );
read( h->fd, s, h->length );
}
else
{
strncpy( s, h->offset.mem_offset, h->length );
}
return s;
}
return NULL;
}
int help_add_mem( help_t **help, const char *title, const char *content )
{
help_t *h, *l = NULL;
for( h = *help; h; h = h->next )
{
if( g_strcasecmp( h->title, title ) == 0 )
return 0;
l = h;
}
if( l )
h = l->next = g_new0( struct help, 1 );
else
*help = h = g_new0( struct help, 1 );
h->fd = -1;
h->title = g_strdup( title );
h->length = strlen( content );
h->offset.mem_offset = g_strdup( content );
return 1;
}
|
