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more cli hackery 

almost there now, parsing strings to standard types
This commit is contained in:
John Cupitt 2011-05-13 10:08:53 +01:00
parent 860a04a882
commit 825280b365
5 changed files with 119 additions and 91 deletions
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55
TODO
View File

@ -1,48 +1,27 @@
- we seem to have code shared between object and operation:
vips_object_set_arg() and vips_object_set_required_test(), common this up
currently adding stuff to operation.c to set args from strings, with extra
logic for things like create image from filename ... useful for object.c
as well?
- try:
vips add
$ vips add
VipsAdd (add), add two images
VipsOperation.add (left, right, out)
where:
left :: VipsImage
right :: VipsImage
out :: VipsImage
check_required: required construct param left to VipsAdd not set
check_required: required construct param right to VipsAdd not set
get GLib-CRITICAL **: g_option_context_add_group: assertion `group->name !=
NULL' failed, we are not building the option group correctly
why don't we get an error for out not set?
- add something to vips.c to let us call operations via VipsOperation
make optional args to operations into command-line switches
vips add --saturated --expand=12 in1.v in2.v out.v
means
vips_call("add", in1, in2, out, "saturated", TRUE, "expand", 12, NULL);
but how do we integrate this with GOption parsing?
perhaps the vips program should change, so
vips --list all
becomes
vips list all
ie. the various flags that performed actions should become "verbs"
this lets us delay option parsing until we have seen the "verb" part of the
command (which is always argv[1]) and we can build a custom GOptionEntry
new form:
vips <action> [flags] [arguments]
see vips_call_argv() in operation.c
how do we make argv strings into VipsImage? unclear
make something for Python as well
- make something for Python as well
wrap new API for C++

2
libvips/include/vips/object.h
View File

@ -268,6 +268,8 @@ GType vips_object_get_type( void );
void vips_object_class_install_argument( VipsObjectClass *,
GParamSpec *pspec, VipsArgumentFlags flags, guint offset );
int vips_object_set_argument_from_string( VipsObject *object,
const char *name, const char *value );
typedef void *(*VipsObjectSetArguments)( VipsObject *, void *, void * );
VipsObject *vips_object_new( GType type,

62
libvips/iofuncs/object.c
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@ -970,13 +970,62 @@ vips_object_class_install_argument( VipsObjectClass *object_class,
/* Set a named arg from a string.
*/
static int
vips_object_set_arg( VipsObject *object, const char *name, const char *value )
int
vips_object_set_argument_from_string( VipsObject *object,
const char *name, const char *value )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
GParamSpec *pspec;
VipsArgumentClass *argument_class;
VipsArgumentInstance *argument_instance;
GValue gvalue = { 0 };
g_value_init( &gvalue, G_TYPE_STRING );
g_value_set_string( &gvalue, value );
printf( "vips_object_set_argument_from_string: %s = %s\n",
name, value );
pspec = g_object_class_find_property( G_OBJECT_CLASS( class ), name );
if( !pspec ) {
vips_error( "vips_object_set_argument_from_string",
_( "object %s has no argument %s" ),
G_OBJECT_TYPE_NAME( object ), name );
return( -1 );
}
argument_class = (VipsArgumentClass *)
vips__argument_table_lookup( class->argument_table, pspec );
argument_instance =
vips__argument_get_instance( argument_class, object );
if( G_IS_PARAM_SPEC_OBJECT( pspec ) &&
G_PARAM_SPEC_VALUE_TYPE( pspec ) == VIPS_TYPE_IMAGE ) {
VipsImage *image;
char *mode;
mode = (argument_class->flags & VIPS_ARGUMENT_OUTPUT) ?
"w" : "r";
if( !(image = vips_image_new_from_file( value, mode )) )
return( -1 );
g_value_init( &gvalue, G_TYPE_OBJECT );
g_value_set_object( &gvalue, image );
}
else if( G_IS_PARAM_SPEC_BOOLEAN( pspec ) ) {
gboolean b;
g_value_init( &gvalue, G_TYPE_BOOLEAN );
b = TRUE;
if( value &&
(strcasecmp( value, "false" ) == 0 ||
strcasecmp( value, "no" ) == 0 ||
strcmp( value, "0" ) == 0) )
b = FALSE;
g_value_set_boolean( &gvalue, b );
}
else {
g_value_init( &gvalue, G_TYPE_STRING );
g_value_set_string( &gvalue, value );
}
g_object_set_property( G_OBJECT( object ), name, &gvalue );
g_value_unset( &gvalue );
@ -1012,7 +1061,7 @@ vips_object_set_required( VipsObject *object, const char *value )
return( -1 );
}
if( vips_object_set_arg( object, pspec->name, value ) )
if( vips_object_set_argument_from_string( object, pspec->name, value ) )
return( -1 );
return( 0 );
@ -1042,7 +1091,8 @@ vips_object_set_args( VipsObject *object, const char *p )
if( !(p = vips__token_need( p, VIPS_TOKEN_STRING,
string2, PATH_MAX )) )
return( -1 );
if( vips_object_set_arg( object, string, string2 ) )
if( vips_object_set_argument_from_string( object,
string, string2 ) )
return( -1 );
if( !(p = vips__token_must( p, &token,
string2, PATH_MAX )) )

66
libvips/iofuncs/operation.c
View File

@ -58,6 +58,7 @@ G_DEFINE_ABSTRACT_TYPE( VipsOperation, vips_operation, VIPS_TYPE_OBJECT );
/* What to show about the argument.
*/
typedef struct {
char *message; /* header message on first print */
gboolean required; /* show required args or optional */
gboolean oftype; /* "is of type" message */
int n; /* Arg number */
@ -75,6 +76,9 @@ vips_operation_print_arg( VipsObject *object, GParamSpec *pspec,
if( print->required ==
((argument_class->flags & VIPS_ARGUMENT_REQUIRED) != 0) &&
!argument_instance->assigned ) {
if( print->message && print->n == 0 )
vips_buf_appendf( buf, "%s\n", print->message );
if( print->oftype )
vips_buf_appendf( buf, " %s :: %s\n",
pspec->name,
@ -130,7 +134,8 @@ vips_operation_print( VipsObject *object, VipsBuf *buf )
/* First pass through args: show the required names.
*/
vips_buf_appendf( buf, "VipsOperation.%s (", object_class->nickname );
vips_buf_appendf( buf, "%s (", object_class->nickname );
print.message = NULL;
print.required = TRUE;
print.oftype = FALSE;
print.n = 0;
@ -140,7 +145,7 @@ vips_operation_print( VipsObject *object, VipsBuf *buf )
/* Show required types.
*/
vips_buf_appends( buf, "where:\n" );
print.message = "where:";
print.required = TRUE;
print.oftype = TRUE;
print.n = 0;
@ -149,7 +154,7 @@ vips_operation_print( VipsObject *object, VipsBuf *buf )
/* Show optional args.
*/
vips_buf_appends( buf, "optional arguments:\n" );
print.message = "optional arguments:";
print.required = FALSE;
print.oftype = TRUE;
print.n = 0;
@ -351,21 +356,6 @@ vips_call_split( const char *operation_name, va_list optional, ... )
return( result );
}
/* Set a named arg from a string.
*/
static int
vips_object_set_arg( VipsObject *object, const char *name, const char *value )
{
GValue gvalue = { 0 };
g_value_init( &gvalue, G_TYPE_STRING );
g_value_set_string( &gvalue, value );
g_object_set_property( G_OBJECT( object ), name, &gvalue );
g_value_unset( &gvalue );
return( 0 );
}
static void *
vips_object_set_required_test( VipsObject *object,
GParamSpec *pspec,
@ -395,11 +385,9 @@ vips_call_argv_set_required( VipsOperation *operation, const char *value )
return( -1 );
}
/* If this arg needs a value that's a subtype of VipsObject, we can
* use vips_object_from_string() to create it. Otherwise, just set as
* a property.
*/
if( vips_object_set_argument_from_string( VIPS_OBJECT( operation ),
pspec->name, value ) )
return( -1 );
return( 0 );
}
@ -410,17 +398,9 @@ vips_call_options_set( const gchar *option_name, const gchar *value,
{
VipsOperation *operation = (VipsOperation *) data;
printf( "setting optional arg %s = %s\n", option_name, value );
/*
if( !vips_object_has_arg( VIPS_OBJECT( operation ),
option_name, value ) ) {
g_set_error( error, "vips", -1, "bad argument" );
if( vips_object_set_argument_from_string( VIPS_OBJECT( operation ),
option_name, value ) )
return( FALSE );
}
*/
vips_object_set_arg( VIPS_OBJECT( operation ), option_name, value );
return( TRUE );
}
@ -458,10 +438,11 @@ vips_call_options_add( VipsObject *object,
GOptionGroup *
vips_call_options( VipsOperation *operation )
{
VipsObjectClass *object_class = VIPS_OBJECT_GET_CLASS( operation );
GOptionGroup *group;
group = g_option_group_new( VIPS_OBJECT( operation )->nickname,
VIPS_OBJECT( operation )->description,
group = g_option_group_new( object_class->nickname,
object_class->description,
_( "Show operation options" ),
operation,
NULL );
@ -474,28 +455,25 @@ vips_call_options( VipsOperation *operation )
/* Our main command-line entry point. Optional args should have been set by
* the GOption parser already, see above.
*
* We don't create the operation, so we must not unref it. The caller must
* unref on error too.
*/
int
vips_call_argv( VipsOperation *operation, int argc, char **argv )
{
int i;
g_assert( argc > 0 );
g_assert( argc >= 0 );
/* Now set required args from the rest of the command-line.
*/
for( i = 1; i < argc; i++ )
if( vips_call_argv_set_required( operation, argv[i] ) ) {
g_object_unref( operation );
if( vips_call_argv_set_required( operation, argv[i] ) )
return( -1 );
}
if( vips_object_build( VIPS_OBJECT( operation ) ) ) {
g_object_unref( operation );
if( vips_object_build( VIPS_OBJECT( operation ) ) )
return( -1 );
}
g_object_unref( operation );
return( 0 );
}

25
tools/vips.c
View File

@ -931,7 +931,7 @@ parse_options( GOptionContext *context, int *argc, char **argv )
error_exit( "%s", g_get_prgname() );
}
/* We support --plugin for all cases.
/* We support --plugin and --version for all cases.
*/
if( main_option_plugin ) {
if( !im_load_plugin( main_option_plugin ) )
@ -1059,6 +1059,7 @@ main( int argc, char **argv )
handled = TRUE;
}
im_error_clear();
/* Could be a vips8 VipsOperation.
*/
@ -1070,15 +1071,33 @@ main( int argc, char **argv )
g_option_context_add_group( context, group );
parse_options( context, &argc, argv );
if( vips_call_argv( operation, argc, argv ) )
if( vips_call_argv( operation, argc, argv ) ) {
if( argc == 0 ) {
char *help;
help = g_option_context_get_help( context,
FALSE, group );
printf( "%s", help );
vips_object_print( VIPS_OBJECT( operation ) );
error_exit( NULL );
}
error_exit( NULL );
}
g_object_unref( operation );
handled = TRUE;
}
im_error_clear();
if( !handled )
if( !handled ) {
parse_options( context, &argc, argv );
if( argc > 1 )
error_exit( "unknown argument %s\n", argv[1] );
}
g_option_context_free( context );
im_close_plugins();