-/*
- * mlt_properties.c -- base properties class
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_properties.c
+ * \brief Properties class definition
+ * \see mlt_properties_s
+ *
+ * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
- * 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 library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "config.h"
#include "mlt_properties.h"
#include "mlt_property.h"
+#include "mlt_deque.h"
+#include "mlt_log.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <dirent.h>
-/* ---------------- // Private Implementation // ---------------- */
-/** Private implementation of the property list.
-*/
+/** \brief private implementation of the property list */
typedef struct
{
int count;
int size;
mlt_properties mirror;
+ int ref_count;
+ pthread_mutex_t mutex;
}
property_list;
-/** Basic implementation.
-*/
+/* Memory leak checks */
+
+//#define _MLT_PROPERTY_CHECKS_ 2
+#ifdef _MLT_PROPERTY_CHECKS_
+static int properties_created = 0;
+static int properties_destroyed = 0;
+#endif
+
+/** Initialize a properties object that was already allocated.
+ *
+ * This does allocate its ::property_list, and it adds a reference count.
+ * \public \memberof mlt_properties_s
+ * \param this the properties structure to initialize
+ * \param child an opaque pointer to a subclass object
+ * \return true if failed
+ */
int mlt_properties_init( mlt_properties this, void *child )
{
- // NULL all methods
- memset( this, 0, sizeof( struct mlt_properties_s ) );
+ if ( this != NULL )
+ {
+#ifdef _MLT_PROPERTY_CHECKS_
+ // Increment number of properties created
+ properties_created ++;
+#endif
+
+ // NULL all methods
+ memset( this, 0, sizeof( struct mlt_properties_s ) );
- // Assign the child of the object
- this->child = child;
+ // Assign the child of the object
+ this->child = child;
- // Allocate the private structure
- this->private = calloc( sizeof( property_list ), 1 );
+ // Allocate the local structure
+ this->local = calloc( sizeof( property_list ), 1 );
- return this->private == NULL;
+ // Increment the ref count
+ ( ( property_list * )this->local )->ref_count = 1;
+ pthread_mutex_init( &( ( property_list * )this->local )->mutex, NULL );;
+ }
+
+ // Check that initialisation was successful
+ return this != NULL && this->local == NULL;
}
-/** Constructor for stand alone object.
-*/
+/** Create a properties object.
+ *
+ * This allocates the properties structure and calls mlt_properties_init() on it.
+ * Free the properties object with mlt_properties_close().
+ * \public \memberof mlt_properties_s
+ * \return a new properties object
+ */
mlt_properties mlt_properties_new( )
{
return this;
}
-static inline int generate_hash( char *name )
+/** Create a properties object by reading a .properties text file.
+ *
+ * Free the properties object with mlt_properties_close().
+ * \deprecated Please start using mlt_properties_parse_yaml().
+ * \public \memberof mlt_properties_s
+ * \param filename a string contain the absolute file name
+ * \return a new properties object
+ */
+
+mlt_properties mlt_properties_load( const char *filename )
+{
+ // Construct a standalone properties object
+ mlt_properties this = mlt_properties_new( );
+
+ if ( this != NULL )
+ {
+ // Open the file
+ FILE *file = fopen( filename, "r" );
+
+ // Load contents of file
+ if ( file != NULL )
+ {
+ // Temp string
+ char temp[ 1024 ];
+ char last[ 1024 ] = "";
+
+ // Read each string from the file
+ while( fgets( temp, 1024, file ) )
+ {
+ // Chomp the string
+ temp[ strlen( temp ) - 1 ] = '\0';
+
+ // Check if the line starts with a .
+ if ( temp[ 0 ] == '.' )
+ {
+ char temp2[ 1024 ];
+ sprintf( temp2, "%s%s", last, temp );
+ strcpy( temp, temp2 );
+ }
+ else if ( strchr( temp, '=' ) )
+ {
+ strcpy( last, temp );
+ *( strchr( last, '=' ) ) = '\0';
+ }
+
+ // Parse and set the property
+ if ( strcmp( temp, "" ) && temp[ 0 ] != '#' )
+ mlt_properties_parse( this, temp );
+ }
+
+ // Close the file
+ fclose( file );
+ }
+ }
+
+ // Return the pointer
+ return this;
+}
+
+/** Generate a hash key.
+ *
+ * \private \memberof mlt_properties_s
+ * \param name a string
+ * \return an integer
+ */
+
+static inline int generate_hash( const char *name )
{
int hash = 0;
int i = 1;
return hash;
}
-/** Special case - when a container (such as fezzik) is protecting another
- producer, we need to ensure that properties are passed through to the
- real producer.
-*/
+/** Copy a serializable property to properties list that is mirroring this one.
+ *
+ * Special case - when a container (such as fezzik) is protecting another
+ * producer, we need to ensure that properties are passed through to the
+ * real producer.
+ * \private \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the name of the property to copy
+ */
-static inline void mlt_properties_do_mirror( mlt_properties this, char *name )
+static inline void mlt_properties_do_mirror( mlt_properties this, const char *name )
{
- property_list *list = this->private;
- if ( list->mirror != NULL && strcmp( name, "in" ) && strcmp( name, "out" ) )
+ property_list *list = this->local;
+ if ( list->mirror != NULL )
{
char *value = mlt_properties_get( this, name );
if ( value != NULL )
}
}
-/** Allow the specification of a mirror.
-*/
+/** Increment the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \return the new reference count
+ */
+
+int mlt_properties_inc_ref( mlt_properties this )
+{
+ int result = 0;
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ pthread_mutex_lock( &list->mutex );
+ result = ++ list->ref_count;
+ pthread_mutex_unlock( &list->mutex );
+ }
+ return result;
+}
+
+/** Decrement the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \return the new reference count
+ */
+
+int mlt_properties_dec_ref( mlt_properties this )
+{
+ int result = 0;
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ pthread_mutex_lock( &list->mutex );
+ result = -- list->ref_count;
+ pthread_mutex_unlock( &list->mutex );
+ }
+ return result;
+}
+
+/** Get the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \return the current reference count
+ */
+
+int mlt_properties_ref_count( mlt_properties this )
+{
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ return list->ref_count;
+ }
+ return 0;
+}
+
+/** Set a properties list to be a mirror copy of another.
+ *
+ * Note that this does not copy all existing properties. Rather, you must
+ * call this before setting the properties that you wish to copy.
+ * \public \memberof mlt_properties_s
+ * \param that the properties which will receive copies of the properties as they are set.
+ * \param this the properties to mirror
+ */
void mlt_properties_mirror( mlt_properties this, mlt_properties that )
{
- property_list *list = this->private;
+ property_list *list = this->local;
list->mirror = that;
}
-/** Inherit all serialisable properties from that into this.
-*/
+/** Copy all serializable properties to another properties list.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this The properties to copy to
+ * \param that The properties to copy from
+ * \return false
+ */
int mlt_properties_inherit( mlt_properties this, mlt_properties that )
{
return 0;
}
-/** Pass all properties from 'that' that match the prefix to 'this' (excluding the prefix).
-*/
+/** Pass all serializable properties that match a prefix to another properties object
+ *
+ * \public \memberof mlt_properties_s
+ * \param this the properties to copy to
+ * \param that The properties to copy from
+ * \param prefix the property names to match (required)
+ * \return false
+ */
-int mlt_properties_pass( mlt_properties this, mlt_properties that, char *prefix )
+int mlt_properties_pass( mlt_properties this, mlt_properties that, const char *prefix )
{
int count = mlt_properties_count( that );
int length = strlen( prefix );
return 0;
}
-/** Locate a property by name
-*/
+/** Locate a property by name.
+ *
+ * \private \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to lookup by name
+ * \return the property or NULL for failure
+ */
-static inline mlt_property mlt_properties_find( mlt_properties this, char *name )
+static inline mlt_property mlt_properties_find( mlt_properties this, const char *name )
{
- property_list *list = this->private;
+ property_list *list = this->local;
mlt_property value = NULL;
int key = generate_hash( name );
int i = list->hash[ key ] - 1;
{
// Check if we're hashed
if ( list->count > 0 &&
- name[ 0 ] == list->name[ i ][ 0 ] &&
+ name[ 0 ] == list->name[ i ][ 0 ] &&
!strcmp( list->name[ i ], name ) )
value = list->value[ i ];
- // Locate the item
+ // Locate the item
for ( i = list->count - 1; value == NULL && i >= 0; i -- )
if ( name[ 0 ] == list->name[ i ][ 0 ] && !strcmp( list->name[ i ], name ) )
value = list->value[ i ];
}
/** Add a new property.
-*/
+ *
+ * \private \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the name of the new property
+ * \return the new property
+ */
-static mlt_property mlt_properties_add( mlt_properties this, char *name )
+static mlt_property mlt_properties_add( mlt_properties this, const char *name )
{
- property_list *list = this->private;
+ property_list *list = this->local;
int key = generate_hash( name );
// Check that we have space and resize if necessary
if ( list->count == list->size )
{
list->size += 50;
- list->name = realloc( list->name, list->size * sizeof( char * ) );
+ list->name = realloc( list->name, list->size * sizeof( const char * ) );
list->value = realloc( list->value, list->size * sizeof( mlt_property ) );
}
return list->value[ list->count ++ ];
}
-/** Fetch a property by name - this includes add if not found.
-*/
+/** Fetch a property by name and add one if not found.
+ *
+ * \private \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to lookup or add
+ * \return the property
+ */
-static mlt_property mlt_properties_fetch( mlt_properties this, char *name )
+static mlt_property mlt_properties_fetch( mlt_properties this, const char *name )
{
// Try to find an existing property first
mlt_property property = mlt_properties_find( this, name );
return property;
}
-/** Set the property.
-*/
+/** Copy a property to another properties list.
+ *
+ * \public \memberof mlt_properties_s
+ * \author Zach <zachary.drew@gmail.com>
+ * \param this the properties to copy to
+ * \param that the properties to copy from
+ * \param name the name of the property to copy
+ */
-int mlt_properties_set( mlt_properties this, char *name, char *value )
+void mlt_properties_pass_property( mlt_properties this, mlt_properties that, const char *name )
+{
+ // Make sure the source property isn't null.
+ mlt_property that_prop = mlt_properties_find( that, name );
+ if( that_prop == NULL )
+ return;
+
+ mlt_property_pass( mlt_properties_fetch( this, name ), that_prop );
+}
+
+/** Copy all properties specified in a comma-separated list to another properties list.
+ *
+ * White space is also a delimiter.
+ * \public \memberof mlt_properties_s
+ * \author Zach <zachary.drew@gmail.com>
+ * \param this the properties to copy to
+ * \param that the properties to copy from
+ * \param list a delimited list of property names
+ * \return false
+ */
+
+
+int mlt_properties_pass_list( mlt_properties this, mlt_properties that, const char *list )
+{
+ char *props = strdup( list );
+ char *ptr = props;
+ char *delim = " ,\t\n"; // Any combination of spaces, commas, tabs, and newlines
+ int count, done = 0;
+
+ while( !done )
+ {
+ count = strcspn( ptr, delim );
+
+ if( ptr[count] == '\0' )
+ done = 1;
+ else
+ ptr[count] = '\0'; // Make it a real string
+
+ mlt_properties_pass_property( this, that, ptr );
+
+ ptr += count + 1;
+ ptr += strspn( ptr, delim );
+ }
+
+ free( props );
+
+ return 0;
+}
+
+
+/** Set a property to a string.
+ *
+ * This makes a copy of the string value you supply.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value the property's new value
+ * \return true if error
+ */
+
+int mlt_properties_set( mlt_properties this, const char *name, const char *value )
{
int error = 1;
mlt_property property = mlt_properties_fetch( this, name );
// Set it if not NULL
- if ( property != NULL )
+ if ( property == NULL )
+ {
+ mlt_log( NULL, MLT_LOG_FATAL, "Whoops - %s not found (should never occur)\n", name );
+ }
+ else if ( value == NULL )
{
error = mlt_property_set_string( property, value );
mlt_properties_do_mirror( this, name );
}
+ else if ( *value != '@' )
+ {
+ error = mlt_property_set_string( property, value );
+ mlt_properties_do_mirror( this, name );
+ }
+ else if ( value[ 0 ] == '@' )
+ {
+ double total = 0;
+ double current = 0;
+ char id[ 255 ];
+ char op = '+';
+
+ value ++;
+
+ while ( *value != '\0' )
+ {
+ int length = strcspn( value, "+-*/" );
+
+ // Get the identifier
+ strncpy( id, value, length );
+ id[ length ] = '\0';
+ value += length;
+
+ // Determine the value
+ if ( isdigit( id[ 0 ] ) )
+ current = atof( id );
+ else
+ current = mlt_properties_get_double( this, id );
+
+ // Apply the operation
+ switch( op )
+ {
+ case '+':
+ total += current;
+ break;
+ case '-':
+ total -= current;
+ break;
+ case '*':
+ total *= current;
+ break;
+ case '/':
+ total = total / current;
+ break;
+ }
+
+ // Get the next op
+ op = *value != '\0' ? *value ++ : ' ';
+ }
+
+ error = mlt_property_set_double( property, total );
+ mlt_properties_do_mirror( this, name );
+ }
+
+ mlt_events_fire( this, "property-changed", name, NULL );
return error;
}
+/** Set or default a property to a string.
+ *
+ * This makes a copy of the string value you supply.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value the string value to set or NULL to use the default
+ * \param def the default string if value is NULL
+ * \return true if error
+ */
+
+int mlt_properties_set_or_default( mlt_properties this, const char *name, const char *value, const char *def )
+{
+ return mlt_properties_set( this, name, value == NULL ? def : value );
+}
+
/** Get a string value by name.
-*/
+ *
+ * Do not free the returned string. It's lifetime is controlled by the property
+ * and this properties object.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \return the property's string value or NULL if it does not exist
+ */
-char *mlt_properties_get( mlt_properties this, char *name )
+char *mlt_properties_get( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? NULL : mlt_property_get_string( value );
}
-/** Get a name by index.
-*/
+/** Get a property name by index.
+ *
+ * Do not free the returned string.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param index the numeric index of the property
+ * \return the name of the property or NULL if index is out of range
+ */
char *mlt_properties_get_name( mlt_properties this, int index )
{
- property_list *list = this->private;
+ property_list *list = this->local;
if ( index >= 0 && index < list->count )
return list->name[ index ];
return NULL;
}
-/** Get a string value by index.
-*/
+/** Get a property's string value by index.
+ *
+ * Do not free the returned string.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param index the numeric index of the property
+ * \return the property value as a string or NULL if the index is out of range
+ */
char *mlt_properties_get_value( mlt_properties this, int index )
{
- property_list *list = this->private;
+ property_list *list = this->local;
if ( index >= 0 && index < list->count )
return mlt_property_get_string( list->value[ index ] );
return NULL;
}
/** Get a data value by index.
-*/
+ *
+ * Do not free the returned pointer if you supplied a destructor function when you
+ * set this property.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param index the numeric index of the property
+ * \param size the size of the binary data in bytes or NULL if the index is out of range
+ */
void *mlt_properties_get_data_at( mlt_properties this, int index, int *size )
{
- property_list *list = this->private;
+ property_list *list = this->local;
if ( index >= 0 && index < list->count )
return mlt_property_get_data( list->value[ index ], size );
return NULL;
}
/** Return the number of items in the list.
-*/
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \return the number of property objects
+ */
int mlt_properties_count( mlt_properties this )
{
- property_list *list = this->private;
+ property_list *list = this->local;
return list->count;
}
-/** Set a value by parsing a name=value string
-*/
+/** Set a value by parsing a name=value string.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param namevalue a string containing name and value delimited by '='
+ * \return true if there was an error
+ */
-int mlt_properties_parse( mlt_properties this, char *namevalue )
+int mlt_properties_parse( mlt_properties this, const char *namevalue )
{
char *name = strdup( namevalue );
- char *value = strdup( namevalue );
+ char *value = NULL;
int error = 0;
+ char *ptr = strchr( name, '=' );
- if ( strchr( name, '=' ) )
+ if ( ptr )
{
- *( strchr( name, '=' ) ) = '\0';
- strcpy( value, strchr( value, '=' ) + 1 );
+ *( ptr ++ ) = '\0';
+
+ if ( *ptr != '\"' )
+ {
+ value = strdup( ptr );
+ }
+ else
+ {
+ ptr ++;
+ value = strdup( ptr );
+ if ( value != NULL && value[ strlen( value ) - 1 ] == '\"' )
+ value[ strlen( value ) - 1 ] = '\0';
+ }
}
else
{
- strcpy( value, "" );
- }
-
- if ( strlen( value ) > 1 && value[ 0 ] == '\"' )
- {
- strcpy( value, value + 1 );
- if ( value[ strlen( value ) - 1 ] == '\"' )
- value[ strlen( value ) - 1 ] = '\0';
+ value = strdup( "" );
}
error = mlt_properties_set( this, name, value );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get an integer associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \return The integer value, 0 if not found (which may also be a legitimate value)
+ */
-int mlt_properties_get_int( mlt_properties this, char *name )
+int mlt_properties_get_int( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_int( value );
}
-/** Set a value associated to the name.
-*/
+/** Set a property to an integer value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value the integer
+ * \return true if error
+ */
-int mlt_properties_set_int( mlt_properties this, char *name, int value )
+int mlt_properties_set_int( mlt_properties this, const char *name, int value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a 64-bit integer associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \return the integer value, 0 if not found (which may also be a legitimate value)
+ */
+
+int64_t mlt_properties_get_int64( mlt_properties this, const char *name )
+{
+ mlt_property value = mlt_properties_find( this, name );
+ return value == NULL ? 0 : mlt_property_get_int64( value );
+}
+
+/** Set a property to a 64-bit integer value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value the integer
+ * \return true if error
+ */
+
+int mlt_properties_set_int64( mlt_properties this, const char *name, int64_t value )
+{
+ int error = 1;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( this, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ error = mlt_property_set_int64( property, value );
+ mlt_properties_do_mirror( this, name );
+ }
+
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a floating point value associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \return the floating point, 0 if not found (which may also be a legitimate value)
+ */
-double mlt_properties_get_double( mlt_properties this, char *name )
+double mlt_properties_get_double( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_double( value );
}
-/** Set a value associated to the name.
-*/
+/** Set a property to a floating point value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value the floating point value
+ * \return true if error
+ */
-int mlt_properties_set_double( mlt_properties this, char *name, double value )
+int mlt_properties_set_double( mlt_properties this, const char *name, double value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a position value associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \return the position, 0 if not found (which may also be a legitimate value)
+ */
-mlt_position mlt_properties_get_position( mlt_properties this, char *name )
+mlt_position mlt_properties_get_position( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_position( value );
}
-/** Set a value associated to the name.
-*/
+/** Set a property to a position value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \param value the position
+ * \return true if error
+ */
-int mlt_properties_set_position( mlt_properties this, char *name, mlt_position value )
+int mlt_properties_set_position( mlt_properties this, const char *name, mlt_position value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a binary data value associated to the name.
+ *
+ * Do not free the returned pointer if you supplied a destructor function
+ * when you set this property.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to get
+ * \param length The size of the binary data in bytes, if available (often it is not, you should know)
+ */
-void *mlt_properties_get_data( mlt_properties this, char *name, int *length )
+void *mlt_properties_get_data( mlt_properties this, const char *name, int *length )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? NULL : mlt_property_get_data( value, length );
}
-/** Set a value associated to the name.
-*/
+/** Store binary data as a property.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param name the property to set
+ * \param value an opaque pointer to binary data
+ * \param length the size of the binary data in bytes (optional)
+ * \param destroy a function to dellacate the binary data when the property is closed (optional)
+ * \param serialise a function that can serialize the binary data as text (optional)
+ * \return true if error
+ */
-int mlt_properties_set_data( mlt_properties this, char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
+int mlt_properties_set_data( mlt_properties this, const char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
{
int error = 1;
if ( property != NULL )
error = mlt_property_set_data( property, value, length, destroy, serialise );
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
/** Rename a property.
-*/
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param source the property to rename
+ * \param dest the new name
+ * \return true if the name is already in use
+ */
-int mlt_properties_rename( mlt_properties this, char *source, char *dest )
+int mlt_properties_rename( mlt_properties this, const char *source, const char *dest )
{
mlt_property value = mlt_properties_find( this, dest );
if ( value == NULL )
{
- property_list *list = this->private;
+ property_list *list = this->local;
int i = 0;
- // Locate the item
+ // Locate the item
for ( i = 0; i < list->count; i ++ )
{
if ( !strcmp( list->name[ i ], source ) )
return value != NULL;
}
-/** Dump the properties.
-*/
+/** Dump the properties to a file handle.
+ *
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param output a file handle
+ */
void mlt_properties_dump( mlt_properties this, FILE *output )
{
- property_list *list = this->private;
+ property_list *list = this->local;
int i = 0;
for ( i = 0; i < list->count; i ++ )
- fprintf( stderr, "%s = %s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
+ if ( mlt_properties_get( this, list->name[ i ] ) != NULL )
+ fprintf( output, "%s=%s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
}
-/** Close the list.
-*/
+/** Output the properties to a file handle.
+ *
+ * This version includes reference counts and does not put each property on a new line.
+ * \public \memberof mlt_properties_s
+ * \param this a properties pointer
+ * \param title a string to preface the output
+ * \param output a file handle
+ */
+void mlt_properties_debug( mlt_properties this, const char *title, FILE *output )
+{
+ if ( output == NULL ) output = stderr;
+ fprintf( output, "%s: ", title );
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ int i = 0;
+ fprintf( output, "[ ref=%d", list->ref_count );
+ for ( i = 0; i < list->count; i ++ )
+ if ( mlt_properties_get( this, list->name[ i ] ) != NULL )
+ fprintf( output, ", %s=%s", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
+ else
+ fprintf( output, ", %s=%p", list->name[ i ], mlt_properties_get_data( this, list->name[ i ], NULL ) );
+ fprintf( output, " ]" );
+ }
+ fprintf( output, "\n" );
+}
+
+/** Save the properties to a file by name.
+ *
+ * This uses the dump format - one line per property.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param filename the name of a file to create or overwrite
+ * \return true if there was an error
+ */
+
+int mlt_properties_save( mlt_properties this, const char *filename )
+{
+ int error = 1;
+ FILE *f = fopen( filename, "w" );
+ if ( f != NULL )
+ {
+ mlt_properties_dump( this, f );
+ fclose( f );
+ error = 0;
+ }
+ return error;
+}
+
+/* This is a very basic cross platform fnmatch replacement - it will fail in
+ * many cases, but for the basic *.XXX and YYY*.XXX, it will work ok.
+ */
+
+/** Test whether a filename or pathname matches a shell-style pattern.
+ *
+ * \private \memberof mlt_properties_s
+ * \param wild a string containing a wildcard pattern
+ * \param file the name of a file to test against
+ * \return true if the file name matches the wildcard pattern
+ */
+
+static int mlt_fnmatch( const char *wild, const char *file )
+{
+ int f = 0;
+ int w = 0;
+
+ while( f < strlen( file ) && w < strlen( wild ) )
+ {
+ if ( wild[ w ] == '*' )
+ {
+ w ++;
+ if ( w == strlen( wild ) )
+ f = strlen( file );
+ while ( f != strlen( file ) && tolower( file[ f ] ) != tolower( wild[ w ] ) )
+ f ++;
+ }
+ else if ( wild[ w ] == '?' || tolower( file[ f ] ) == tolower( wild[ w ] ) )
+ {
+ f ++;
+ w ++;
+ }
+ else if ( wild[ 0 ] == '*' )
+ {
+ w = 0;
+ }
+ else
+ {
+ return 0;
+ }
+ }
+
+ return strlen( file ) == f && strlen( wild ) == w;
+}
+
+/** Compare the string or serialized value of two properties.
+ *
+ * \private \memberof mlt_properties_s
+ * \param this a property
+ * \param that a property
+ * \return < 0 if 'this' less than 'that', 0 if equal, or > 0 if 'this' is greater than 'that'
+ */
+
+static int mlt_compare( const void *this, const void *that )
+{
+ return strcmp( mlt_property_get_string( *( mlt_property * )this ), mlt_property_get_string( *( mlt_property * )that ) );
+}
+
+/** Get the contents of a directory.
+ *
+ * Obtains an optionally sorted list of the files found in a directory with a specific wild card.
+ * Entries in the list have a numeric name (running from 0 to count - 1). Only values change
+ * position if sort is enabled. Designed to be posix compatible (linux, os/x, mingw etc).
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \param dirname the name of the directory
+ * \param pattern a wildcard pattern to filter the directory listing
+ * \param sort Do you want to sort the directory listing?
+ * \return the number of items in the directory listing
+ */
+
+int mlt_properties_dir_list( mlt_properties this, const char *dirname, const char *pattern, int sort )
+{
+ DIR *dir = opendir( dirname );
+
+ if ( dir )
+ {
+ char key[ 20 ];
+ struct dirent *de = readdir( dir );
+ char fullname[ 1024 ];
+ while( de != NULL )
+ {
+ sprintf( key, "%d", mlt_properties_count( this ) );
+ snprintf( fullname, 1024, "%s/%s", dirname, de->d_name );
+ if ( pattern == NULL )
+ mlt_properties_set( this, key, fullname );
+ else if ( de->d_name[ 0 ] != '.' && mlt_fnmatch( pattern, de->d_name ) )
+ mlt_properties_set( this, key, fullname );
+ de = readdir( dir );
+ }
+
+ closedir( dir );
+ }
+
+ if ( sort && mlt_properties_count( this ) )
+ {
+ property_list *list = this->local;
+ qsort( list->value, mlt_properties_count( this ), sizeof( mlt_property ), mlt_compare );
+ }
+
+ return mlt_properties_count( this );
+}
+
+/** Close a properties object.
+ *
+ * Deallocates the properties object and everything it contains.
+ * \public \memberof mlt_properties_s
+ * \param this a properties object
+ */
void mlt_properties_close( mlt_properties this )
{
- property_list *list = this->private;
- int index = 0;
+ if ( this != NULL && mlt_properties_dec_ref( this ) <= 0 )
+ {
+ if ( this->close != NULL )
+ {
+ this->close( this->close_object );
+ }
+ else
+ {
+ property_list *list = this->local;
+ int index = 0;
+
+#if _MLT_PROPERTY_CHECKS_ == 1
+ // Show debug info
+ mlt_properties_debug( this, "Closing", stderr );
+#endif
+
+#ifdef _MLT_PROPERTY_CHECKS_
+ // Increment destroyed count
+ properties_destroyed ++;
+
+ // Show current stats - these should match when the app is closed
+ mlt_log( NULL, MLT_LOG_DEBUG, "Created %d, destroyed %d\n", properties_created, properties_destroyed );
+#endif
+
+ // Clean up names and values
+ for ( index = list->count - 1; index >= 0; index -- )
+ {
+ free( list->name[ index ] );
+ mlt_property_close( list->value[ index ] );
+ }
+
+ // Clear up the list
+ pthread_mutex_destroy( &list->mutex );
+ free( list->name );
+ free( list->value );
+ free( list );
+
+ // Free this now if this has no child
+ if ( this->child == NULL )
+ free( this );
+ }
+ }
+}
+
+/** Determine if the properties list is really just a sequence or ordered list.
+ *
+ * \public \memberof mlt_properties_s
+ * \param properties a properties list
+ * \return true if all of the property names are numeric (a sequence)
+ */
+
+int mlt_properties_is_sequence( mlt_properties properties )
+{
+ int i;
+ int n = mlt_properties_count( properties );
+ for ( i = 0; i < n; i++ )
+ if ( ! isdigit( mlt_properties_get_name( properties, i )[0] ) )
+ return 0;
+ return 1;
+}
+
+/** \brief YAML Tiny Parser context structure
+ *
+ * YAML is a nifty text format popular in the Ruby world as a cleaner,
+ * less verbose alternative to XML. See this Wikipedia topic for an overview:
+ * http://en.wikipedia.org/wiki/YAML
+ * The YAML specification is at:
+ * http://yaml.org/
+ * YAML::Tiny is a Perl module that specifies a subset of YAML that we are
+ * using here (for the same reasons):
+ * http://search.cpan.org/~adamk/YAML-Tiny-1.25/lib/YAML/Tiny.pm
+ * \private
+ */
+
+struct yaml_parser_context
+{
+ mlt_deque stack;
+ unsigned int level;
+ unsigned int index;
+ char block;
+ char *block_name;
+ unsigned int block_indent;
+
+};
+typedef struct yaml_parser_context *yaml_parser;
+
+/** Remove spaces from the left side of a string.
+ *
+ * \param s the string to trim
+ * \return the number of characters removed
+ */
+
+static unsigned int ltrim( char **s )
+{
+ unsigned int i = 0;
+ char *c = *s;
+ int n = strlen( c );
+ for ( i = 0; i < n && *c == ' '; i++, c++ );
+ *s = c;
+ return i;
+}
+
+/** Remove spaces from the right side of a string.
+ *
+ * \param s the string to trim
+ * \return the number of characters removed
+ */
+
+static unsigned int rtrim( char *s )
+{
+ int n = strlen( s );
+ int i;
+ for ( i = n; i > 0 && s[i - 1] == ' '; --i )
+ s[i - 1] = 0;
+ return n - i;
+}
+
+/** Parse a line of YAML Tiny.
+ *
+ * Adds a property if needed.
+ * \private \memberof yaml_parser_context
+ * \param context a YAML Tiny Parser context
+ * \param namevalue a line of YAML Tiny
+ * \return true if there was an error
+ */
+
+static int parse_yaml( yaml_parser context, const char *namevalue )
+{
+ char *name_ = strdup( namevalue );
+ char *name = name_;
+ char *value = NULL;
+ int error = 0;
+ char *ptr = strchr( name, ':' );
+ unsigned int indent = ltrim( &name );
+ mlt_properties properties = mlt_deque_peek_front( context->stack );
+
+ // Ascending one more levels in the tree
+ if ( indent < context->level )
+ {
+ unsigned int i;
+ unsigned int n = ( context->level - indent ) / 2;
+ for ( i = 0; i < n; i++ )
+ mlt_deque_pop_front( context->stack );
+ properties = mlt_deque_peek_front( context->stack );
+ context->level = indent;
+ }
- // Clean up names and values
- for ( index = list->count - 1; index >= 0; index -- )
+ // Descending a level in the tree
+ else if ( indent > context->level && context->block == 0 )
{
- free( list->name[ index ] );
- mlt_property_close( list->value[ index ] );
+ context->level = indent;
}
- // Clear up the list
- free( list->name );
- free( list->value );
- free( list );
+ // If there is a colon that is not part of a block
+ if ( ptr && ( indent == context->level ) )
+ {
+ // Reset block processing
+ if ( context->block_name )
+ {
+ free( context->block_name );
+ context->block_name = NULL;
+ context->block = 0;
+ }
+
+ // Terminate the name and setup the value pointer
+ *( ptr ++ ) = 0;
+
+ // Trim comment
+ char *comment = strchr( ptr, '#' );
+ if ( comment )
+ {
+ *comment = 0;
+ }
+
+ // Trim leading and trailing spaces from bare value
+ ltrim( &ptr );
+ rtrim( ptr );
- // Free this now if this has no child
- if ( this->child == NULL )
- free( this );
+ // No value means a child
+ if ( strcmp( ptr, "" ) == 0 )
+ {
+ mlt_properties child = mlt_properties_new();
+ mlt_properties_set_data( properties, name, child, 0,
+ ( mlt_destructor )mlt_properties_close, NULL );
+ mlt_deque_push_front( context->stack, child );
+ context->index = 0;
+ free( name_ );
+ return error;
+ }
+
+ // A dash indicates a sequence item
+ if ( name[0] == '-' )
+ {
+ mlt_properties child = mlt_properties_new();
+ char key[20];
+
+ snprintf( key, sizeof(key), "%d", context->index++ );
+ mlt_properties_set_data( properties, key, child, 0,
+ ( mlt_destructor )mlt_properties_close, NULL );
+ mlt_deque_push_front( context->stack, child );
+
+ name ++;
+ context->level += ltrim( &name ) + 1;
+ properties = child;
+ }
+
+ // Value is quoted
+ if ( *ptr == '\"' )
+ {
+ ptr ++;
+ value = strdup( ptr );
+ if ( value && value[ strlen( value ) - 1 ] == '\"' )
+ value[ strlen( value ) - 1 ] = 0;
+ }
+
+ // Value is folded or unfolded block
+ else if ( *ptr == '|' || *ptr == '>' )
+ {
+ context->block = *ptr;
+ context->block_name = strdup( name );
+ context->block_indent = 0;
+ value = strdup( "" );
+ }
+
+ // Bare value
+ else
+ {
+ value = strdup( ptr );
+ }
+ }
+
+ // A list of scalars
+ else if ( name[0] == '-' )
+ {
+ // Reset block processing
+ if ( context->block_name )
+ {
+ free( context->block_name );
+ context->block_name = NULL;
+ context->block = 0;
+ }
+
+ char key[20];
+
+ snprintf( key, sizeof(key), "%d", context->index++ );
+ ptr = name + 1;
+
+ // Trim comment
+ char *comment = strchr( ptr, '#' );
+ if ( comment )
+ *comment = 0;
+
+ // Trim leading and trailing spaces from bare value
+ ltrim( &ptr );
+ rtrim( ptr );
+
+ // Value is quoted
+ if ( *ptr == '\"' )
+ {
+ ptr ++;
+ value = strdup( ptr );
+ if ( value && value[ strlen( value ) - 1 ] == '\"' )
+ value[ strlen( value ) - 1 ] = 0;
+ }
+
+ // Value is folded or unfolded block
+ else if ( *ptr == '|' || *ptr == '>' )
+ {
+ context->block = *ptr;
+ context->block_name = strdup( key );
+ context->block_indent = 0;
+ value = strdup( "" );
+ }
+
+ // Bare value
+ else
+ {
+ value = strdup( ptr );
+ }
+
+ free( name_ );
+ name = name_ = strdup( key );
+ }
+
+ // Non-folded block
+ else if ( context->block == '|' )
+ {
+ if ( context->block_indent == 0 )
+ context->block_indent = indent;
+ if ( indent > context->block_indent )
+ name = &name_[ context->block_indent ];
+ rtrim( name );
+ char *old_value = mlt_properties_get( properties, context->block_name );
+ value = calloc( 1, strlen( old_value ) + strlen( name ) + 2 );
+ strcpy( value, old_value );
+ if ( strcmp( old_value, "" ) )
+ strcat( value, "\n" );
+ strcat( value, name );
+ name = context->block_name;
+ }
+
+ // Folded block
+ else if ( context->block == '>' )
+ {
+ ltrim( &name );
+ rtrim( name );
+ char *old_value = mlt_properties_get( properties, context->block_name );
+
+ // Blank line (prepended with spaces) is new line
+ if ( strcmp( name, "" ) == 0 )
+ {
+ value = calloc( 1, strlen( old_value ) + 2 );
+ strcat( value, old_value );
+ strcat( value, "\n" );
+ }
+ // Concatenate with space
+ else
+ {
+ value = calloc( 1, strlen( old_value ) + strlen( name ) + 2 );
+ strcat( value, old_value );
+ if ( strcmp( old_value, "" ) && old_value[ strlen( old_value ) - 1 ] != '\n' )
+ strcat( value, " " );
+ strcat( value, name );
+ }
+ name = context->block_name;
+ }
+
+ else
+ {
+ value = strdup( "" );
+ }
+
+ error = mlt_properties_set( properties, name, value );
+
+ free( name_ );
+ free( value );
+
+ return error;
}
+/** Parse a YAML Tiny file by name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param filename the name of a text file containing YAML Tiny
+ * \return a new properties list
+ */
+
+mlt_properties mlt_properties_parse_yaml( const char *filename )
+{
+ // Construct a standalone properties object
+ mlt_properties this = mlt_properties_new( );
+
+ if ( this )
+ {
+ // Open the file
+ FILE *file = fopen( filename, "r" );
+
+ // Load contents of file
+ if ( file )
+ {
+ // Temp string
+ char temp[ 1024 ];
+ char *ptemp = &temp[ 0 ];
+
+ // Parser context
+ yaml_parser context = calloc( 1, sizeof( struct yaml_parser_context ) );
+ context->stack = mlt_deque_init();
+ mlt_deque_push_front( context->stack, this );
+
+ // Read each string from the file
+ while( fgets( temp, 1024, file ) )
+ {
+ // Check for end-of-stream
+ if ( strncmp( ptemp, "...", 3 ) == 0 )
+ break;
+
+ // Chomp the string
+ temp[ strlen( temp ) - 1 ] = '\0';
+
+ // Skip blank lines, comment lines, and document separator
+ if ( strcmp( ptemp, "" ) && ptemp[ 0 ] != '#' && strncmp( ptemp, "---", 3 )
+ && strncmp( ptemp, "%YAML", 5 ) && strncmp( ptemp, "% YAML", 6 ) )
+ parse_yaml( context, temp );
+ }
+
+ // Close the file
+ fclose( file );
+ mlt_deque_close( context->stack );
+ if ( context->block_name )
+ free( context->block_name );
+ free( context );
+ }
+ }
+
+ // Return the pointer
+ return this;
+}
+
+/*
+ * YAML Tiny Serializer
+ */
+
+/** How many bytes to grow at a time */
+#define STRBUF_GROWTH (1024)
+
+/** \brief Private to mlt_properties_s, a self-growing buffer for building strings
+ * \private
+ */
+
+struct strbuf_s
+{
+ size_t size;
+ char *string;
+};
+
+typedef struct strbuf_s *strbuf;
+
+/** Create a new string buffer
+ *
+ * \private \memberof strbuf_s
+ * \return a new string buffer
+ */
+
+static strbuf strbuf_new( )
+{
+ strbuf buffer = calloc( 1, sizeof( struct strbuf_s ) );
+ buffer->size = STRBUF_GROWTH;
+ buffer->string = calloc( 1, buffer->size );
+ return buffer;
+}
+
+/** Destroy a string buffer
+ *
+ * \private \memberof strbuf_s
+ * \param buffer the string buffer to close
+ */
+
+static void strbuf_close( strbuf buffer )
+{
+ // We do not free buffer->string; strbuf user must save that pointer
+ // and free it.
+ if ( buffer )
+ free( buffer );
+}
+
+/** Format a string into a string buffer
+ *
+ * A variable number of arguments follows the format string - one for each
+ * format specifier.
+ * \private \memberof strbuf_s
+ * \param buffer the string buffer to write into
+ * \param format a string that contains text and formatting instructions
+ * \return the formatted string
+ */
+
+static char *strbuf_printf( strbuf buffer, const char *format, ... )
+{
+ while ( buffer->string )
+ {
+ va_list ap;
+ va_start( ap, format );
+ size_t len = strlen( buffer->string );
+ size_t remain = buffer->size - len - 1;
+ int need = vsnprintf( buffer->string + len, remain, format, ap );
+ va_end( ap );
+ if ( need > -1 && need < remain )
+ break;
+ buffer->string[ len ] = 0;
+ buffer->size += need + STRBUF_GROWTH;
+ buffer->string = realloc( buffer->string, buffer->size );
+ }
+ return buffer->string;
+}
+
+/** Indent a line of YAML Tiny.
+ *
+ * \private \memberof strbuf_s
+ * \param output a string buffer
+ * \param indent the number of spaces to indent
+ */
+
+static inline void indent_yaml( strbuf output, int indent )
+{
+ int j;
+ for ( j = 0; j < indent; j++ )
+ strbuf_printf( output, " " );
+}
+
+/** Convert a line string into a YAML block literal.
+ *
+ * \private \memberof strbuf_s
+ * \param output a string buffer
+ * \param value the string to format as a block literal
+ * \param indent the number of spaces to indent
+ */
+
+static void output_yaml_block_literal( strbuf output, const char *value, int indent )
+{
+ char *v = strdup( value );
+ char *sol = v;
+ char *eol = strchr( sol, '\n' );
+
+ while ( eol )
+ {
+ indent_yaml( output, indent );
+ *eol = '\0';
+ strbuf_printf( output, "%s\n", sol );
+ sol = eol + 1;
+ eol = strchr( sol, '\n' );
+ }
+ indent_yaml( output, indent );
+ strbuf_printf( output, "%s\n", sol );
+}
+
+/** Recursively serialize a properties list into a string buffer as YAML Tiny.
+ *
+ * \private \memberof mlt_properties_s
+ * \param this a properties list
+ * \param output a string buffer to hold the serialized YAML Tiny
+ * \param indent the number of spaces to indent (for recursion, initialize to 0)
+ * \param is_parent_sequence Is 'this' properties list really just a sequence (for recursion, initialize to 0)?
+ */
+
+static void serialise_yaml( mlt_properties this, strbuf output, int indent, int is_parent_sequence )
+{
+ property_list *list = this->local;
+ int i = 0;
+
+ for ( i = 0; i < list->count; i ++ )
+ {
+ // This implementation assumes that all data elements are property lists.
+ // Unfortunately, we do not have run time type identification.
+ mlt_properties child = mlt_property_get_data( list->value[ i ], NULL );
+
+ if ( mlt_properties_is_sequence( this ) )
+ {
+ // Ignore hidden/non-serialisable items
+ if ( list->name[ i ][ 0 ] != '_' )
+ {
+ // Indicate a sequence item
+ indent_yaml( output, indent );
+ strbuf_printf( output, "- " );
+
+ // If the value can be represented as a string
+ const char *value = mlt_properties_get( this, list->name[ i ] );
+ if ( value && strcmp( value, "" ) )
+ {
+ // Determine if this is an unfolded block literal
+ if ( strchr( value, '\n' ) )
+ {
+ strbuf_printf( output, "|\n" );
+ output_yaml_block_literal( output, value, indent + strlen( list->name[ i ] ) + strlen( "|" ) );
+ }
+ else
+ {
+ strbuf_printf( output, "%s\n", value );
+ }
+ }
+ }
+ // Recurse on child
+ if ( child )
+ serialise_yaml( child, output, indent + 2, 1 );
+ }
+ else
+ {
+ // Assume this is a normal map-oriented properties list
+ const char *value = mlt_properties_get( this, list->name[ i ] );
+
+ // Ignore hidden/non-serialisable items
+ // If the value can be represented as a string
+ if ( list->name[ i ][ 0 ] != '_' && value && strcmp( value, "" ) )
+ {
+ if ( is_parent_sequence == 0 )
+ indent_yaml( output, indent );
+ else
+ is_parent_sequence = 0;
+
+ // Determine if this is an unfolded block literal
+ if ( strchr( value, '\n' ) )
+ {
+ strbuf_printf( output, "%s: |\n", list->name[ i ] );
+ output_yaml_block_literal( output, value, indent + strlen( list->name[ i ] ) + strlen( ": " ) );
+ }
+ else
+ {
+ strbuf_printf( output, "%s: %s\n", list->name[ i ], value );
+ }
+ }
+
+ // Output a child as a map item
+ if ( child )
+ {
+ indent_yaml( output, indent );
+ strbuf_printf( output, "%s:\n", list->name[ i ] );
+
+ // Recurse on child
+ serialise_yaml( child, output, indent + 2, 0 );
+ }
+ }
+ }
+}
+
+/** Serialize a properties list as a string of YAML Tiny.
+ *
+ * The caller MUST free the returned string!
+ * This operates on properties containing properties as a hierarchical data
+ * structure.
+ * \public \memberof mlt_properties_s
+ * \param this a properties list
+ * \return a string containing YAML Tiny that represents the properties list
+ */
+
+char *mlt_properties_serialise_yaml( mlt_properties this )
+{
+ strbuf b = strbuf_new();
+ strbuf_printf( b, "---\n" );
+ serialise_yaml( this, b, 0, 0 );
+ strbuf_printf( b, "...\n" );
+ char *ret = b->string;
+ strbuf_close( b );
+ return ret;
+}
projects / mlt / blobdiff