non/mixer/src/Project.C

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/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* 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 along */
/* with This program; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
/* Routings for opening/closing/creation of projects. All the actual
project state belongs to Timeline and other classes. */
/* Project management routines. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <errno.h>
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#include <unistd.h>
#include "Loggable.H"
#include "Project.H"
#include <FL/filename.H>
#include "const.h"
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#include "debug.h"
#include "file.h"
#include "Mixer.H"
const int PROJECT_VERSION = 1;
const char *Project::_errstr[] =
{
"Not a Non-Mixer project",
"Locked by another process",
"Access denied",
"Incompatible project version"
};
char Project::_name[256];
char Project::_created_on[40];
char Project::_path[512];
bool Project::_is_open = false;
int Project::_lockfd = 0;
/***********/
/* Private */
/***********/
void
Project::set_name ( const char *name )
{
strcpy( Project::_name, name );
if ( Project::_name[ strlen( Project::_name ) - 1 ] == '/' )
Project::_name[ strlen( Project::_name ) - 1 ] = '\0';
char *s = rindex( Project::_name, '/' );
s = s ? s + 1 : Project::_name;
memmove( Project::_name, s, strlen( s ) + 1 );
for ( s = Project::_name; *s; ++s )
if ( *s == '_' || *s == '-' )
*s = ' ';
}
void
Project::name ( const char *name )
{
strcpy( Project::_name, name );
}
bool
Project::write_info ( void )
{
FILE *fp;
if ( ! ( fp = fopen( "info", "w" ) ) )
{
WARNING( "could not open project info file for writing." );
return false;
}
char s[40];
if ( ! *_created_on )
{
time_t t = time( NULL );
ctime_r( &t, s );
s[ strlen( s ) - 1 ] = '\0';
}
else
strcpy( s, _created_on );
fprintf( fp, "created by\n\t%s\ncreated on\n\t%s\nversion\n\t%d\n",
APP_TITLE " " VERSION,
s,
PROJECT_VERSION );
fclose( fp );
return true;
}
bool
Project::read_info ( int *version, char **creation_date, char **created_by )
{
FILE *fp;
if ( ! ( fp = fopen( "info", "r" ) ) )
{
WARNING( "could not open project info file for reading." );
return false;
}
*version = 0;
*creation_date = 0;
*created_by = 0;
char *name, *value;
while ( fscanf( fp, "%a[^\n]\n\t%a[^\n]\n", &name, &value ) == 2 )
{
MESSAGE( "Info: %s = %s", name, value );
if ( ! strcmp( name, "version" ) )
*version = atoi( value );
else if ( ! strcmp( name, "created on" ) )
*creation_date = strdup( value );
else if ( ! strcmp( name, "created by" ) )
*created_by = strdup( value );
free( name );
free( value );
}
fclose( fp );
return true;
}
/**********/
/* Public */
/**********/
/** Save out any settings and unjournaled state... */
bool
Project::save ( void )
{
if ( ! open() )
return true;
// tle->save_timeline_settings();
int r = mixer->save();
// Loggable::clear_dirty();
return r;
// return Loggable::save_unjournaled_state();
}
/** Close the project (reclaiming all memory) */
bool
Project::close ( void )
{
if ( ! open() )
return true;
if ( ! save() )
return false;
Loggable::close();
/* // write_info(); */
_is_open = false;
*Project::_name = '\0';
*Project::_created_on = '\0';
release_lock( &_lockfd, ".lock" );
return true;
}
/** Ensure a project is valid before opening it... */
bool
Project::validate ( const char *name )
{
bool r = true;
char pwd[512];
fl_filename_absolute( pwd, sizeof( pwd ), "." );
if ( chdir( name ) )
{
WARNING( "Cannot change to project dir \"%s\"", name );
return false;
}
if ( ! exists( "info" ) ||
! exists( "snapshot" ))
{
WARNING( "Not a Non-Mixer project: \"%s\"", name );
r = false;
}
chdir( pwd );
return r;
}
/** Try to open project /name/. Returns 0 if sucsessful, an error code
* otherwise */
int
Project::open ( const char *name )
{
if ( ! validate( name ) )
return E_INVALID;
close();
chdir( name );
if ( ! acquire_lock( &_lockfd, ".lock" ) )
return E_LOCKED;
int version;
char *creation_date;
char *created_by;
if ( ! read_info( &version, &creation_date, &created_by ) )
return E_INVALID;
if ( strncmp( created_by, APP_TITLE, strlen( APP_TITLE ) ) )
return E_INVALID;
if ( version != PROJECT_VERSION )
return E_VERSION;
if ( ! Loggable::replay( "snapshot" ) )
return E_INVALID;
if ( creation_date )
{
strcpy( _created_on, creation_date );
free( creation_date );
}
else
*_created_on = 0;
set_name( name );
*_path = '\0';
fl_filename_absolute( _path, sizeof( _path ), "." );
_is_open = true;
// tle->load_timeline_settings();
// timeline->zoom_fit();
// Loggable::clear_dirty();
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MESSAGE( "Loaded project \"%s\"", name );
return 0;
}
/** Create a new project /name/ from existing template
* /template_name/ */
bool
Project::create ( const char *name, const char *template_name )
{
if ( exists( name ) )
{
WARNING( "Project already exists" );
return false;
}
close();
if ( mkdir( name, 0777 ) )
{
WARNING( "Cannot create project directory: %s", name );
return false;
}
if ( chdir( name ) )
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{
FATAL( "WTF? Cannot change to new project directory" );
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return false;
}
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// mkdir( "sources", 0777 );
creat( "snapshot", 0666 );
/* TODO: copy template */
write_info();
if ( open( name ) == 0 )
{
// /* add the bare essentials */
// timeline->beats_per_minute( 0, 120 );
// timeline->time( 0, 4, 4 );
MESSAGE( "Created project \"%s\" from template \"%s\"", name, template_name );
return true;
}
else
{
WARNING( "Failed to open newly created project" );
return false;
}
}
/** Replace the journal with a snapshot of the current state */
void
Project::compact ( void )
{
Loggable::compact();
}