+++ /dev/null
-/**
- * \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 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 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
- * Lesser General Public License for more details.
- *
- * 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 "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>
-
-
-/** \brief private implementation of the property list */
-
-typedef struct
-{
- int hash[ 199 ];
- char **name;
- mlt_property *value;
- int count;
- int size;
- mlt_properties mirror;
- int ref_count;
- pthread_mutex_t mutex;
-}
-property_list;
-
-/* 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 )
-{
- 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;
-
- // Allocate the local structure
- this->local = calloc( sizeof( property_list ), 1 );
-
- // 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;
-}
-
-/** 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( )
-{
- // Construct a standalone properties object
- mlt_properties this = calloc( sizeof( struct mlt_properties_s ), 1 );
-
- // Initialise this
- mlt_properties_init( this, NULL );
-
- // Return the pointer
- return this;
-}
-
-/** 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;
- while ( *name )
- hash = ( hash + ( i ++ * ( *name ++ & 31 ) ) ) % 199;
- return hash;
-}
-
-/** 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, const char *name )
-{
- property_list *list = this->local;
- if ( list->mirror != NULL )
- {
- char *value = mlt_properties_get( this, name );
- if ( value != NULL )
- mlt_properties_set( list->mirror, name, value );
- }
-}
-
-/** 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->local;
- list->mirror = that;
-}
-
-/** 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 )
-{
- int count = mlt_properties_count( that );
- int i = 0;
- for ( i = 0; i < count; i ++ )
- {
- char *value = mlt_properties_get_value( that, i );
- if ( value != NULL )
- {
- char *name = mlt_properties_get_name( that, i );
- mlt_properties_set( this, name, value );
- }
- }
- return 0;
-}
-
-/** 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, const char *prefix )
-{
- int count = mlt_properties_count( that );
- int length = strlen( prefix );
- int i = 0;
- for ( i = 0; i < count; i ++ )
- {
- char *name = mlt_properties_get_name( that, i );
- if ( !strncmp( name, prefix, length ) )
- {
- char *value = mlt_properties_get_value( that, i );
- if ( value != NULL )
- mlt_properties_set( this, name + length, value );
- }
- }
- return 0;
-}
-
-/** 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, const char *name )
-{
- property_list *list = this->local;
- mlt_property value = NULL;
- int key = generate_hash( name );
- int i = list->hash[ key ] - 1;
-
- if ( i >= 0 )
- {
- // Check if we're hashed
- if ( list->count > 0 &&
- name[ 0 ] == list->name[ i ][ 0 ] &&
- !strcmp( list->name[ i ], name ) )
- value = list->value[ i ];
-
- // 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 ];
- }
-
- return value;
-}
-
-/** 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, const char *name )
-{
- 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( const char * ) );
- list->value = realloc( list->value, list->size * sizeof( mlt_property ) );
- }
-
- // Assign name/value pair
- list->name[ list->count ] = strdup( name );
- list->value[ list->count ] = mlt_property_init( );
-
- // Assign to hash table
- if ( list->hash[ key ] == 0 )
- list->hash[ key ] = list->count + 1;
-
- // Return and increment count accordingly
- return list->value[ list->count ++ ];
-}
-
-/** 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, const char *name )
-{
- // Try to find an existing property first
- mlt_property property = mlt_properties_find( this, name );
-
- // If it wasn't found, create one
- if ( property == NULL )
- property = mlt_properties_add( this, name );
-
- // Return the property
- return 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
- */
-
-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;
- const 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;
-
- // Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
-
- // Set it if not 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, const char *name )
-{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? NULL : mlt_property_get_string( value );
-}
-
-/** 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->local;
- if ( index >= 0 && index < list->count )
- return list->name[ index ];
- return NULL;
-}
-
-/** 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->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[out] 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->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->local;
- return list->count;
-}
-
-/** 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, const char *namevalue )
-{
- char *name = strdup( namevalue );
- char *value = NULL;
- int error = 0;
- char *ptr = strchr( name, '=' );
-
- if ( ptr )
- {
- *( 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
- {
- value = strdup( "" );
- }
-
- error = mlt_properties_set( this, name, value );
-
- free( name );
- free( value );
-
- return error;
-}
-
-/** 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, const char *name )
-{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_int( value );
-}
-
-/** 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, const char *name, int 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_int( property, value );
- 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 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, const char *name )
-{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_double( value );
-}
-
-/** 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, const char *name, double 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_double( property, value );
- mlt_properties_do_mirror( this, name );
- }
-
- mlt_events_fire( this, "property-changed", name, NULL );
-
- return error;
-}
-
-/** 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, const char *name )
-{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_position( value );
-}
-
-/** 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, const char *name, mlt_position 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_position( property, value );
- mlt_properties_do_mirror( this, name );
- }
-
- mlt_events_fire( this, "property-changed", name, NULL );
-
- return error;
-}
-
-/** 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[out] 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, const char *name, int *length )
-{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? NULL : mlt_property_get_data( value, length );
-}
-
-/** 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, const char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
-{
- 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_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, const char *source, const char *dest )
-{
- mlt_property value = mlt_properties_find( this, dest );
-
- if ( value == NULL )
- {
- property_list *list = this->local;
- int i = 0;
-
- // Locate the item
- for ( i = 0; i < list->count; i ++ )
- {
- if ( !strcmp( list->name[ i ], source ) )
- {
- free( list->name[ i ] );
- list->name[ i ] = strdup( dest );
- list->hash[ generate_hash( dest ) ] = i + 1;
- break;
- }
- }
- }
-
- return value != NULL;
-}
-
-/** 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->local;
- int i = 0;
- for ( i = 0; i < list->count; 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 ] ) );
-}
-
-/** 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( *( const mlt_property * )this ), mlt_property_get_string( *( const 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 )
-{
- 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;
- }
-
- // Descending a level in the tree
- else if ( indent > context->level && context->block == 0 )
- {
- context->level = indent;
- }
-
- // 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 );
-
- // 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 / melted / blobdiff