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#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "terminaldispatcher.h"
#include "parseraction.h"
#include "terminalframebuffer.h"
using namespace Terminal;
Dispatcher::Dispatcher()
: params(), parsed_params(), parsed( false ), dispatch_chars(),
OSC_string(), terminal_to_host()
{}
void Dispatcher::newparamchar( const Parser::Param *act )
{
assert( act->char_present );
assert( (act->ch == ';') || ( (act->ch >= '0') && (act->ch <= '9') ) );
if ( params.length() < 100 ) {
/* enough for 16 five-char params plus 15 semicolons */
params.push_back( act->ch );
act->handled = true;
}
parsed = false;
}
void Dispatcher::collect( const Parser::Collect *act )
{
assert( act->char_present );
if ( ( dispatch_chars.length() < 8 ) /* never should need more than 2 */
&& ( act->ch <= 255 ) ) { /* ignore non-8-bit */
dispatch_chars.push_back( act->ch );
act->handled = true;
}
}
void Dispatcher::clear( const Parser::Clear *act )
{
params.clear();
dispatch_chars.clear();
parsed = false;
act->handled = true;
}
void Dispatcher::parse_params( void )
{
if ( parsed ) {
return;
}
parsed_params.clear();
const char *str = params.c_str();
const char *segment_begin = str;
while ( 1 ) {
const char *segment_end = strchr( segment_begin, ';' );
if ( segment_end == NULL ) {
break;
}
errno = 0;
char *endptr;
int val = strtol( segment_begin, &endptr, 10 );
if ( endptr == segment_begin ) {
val = -1;
}
if ( errno == 0 ) {
parsed_params.push_back( val );
}
segment_begin = segment_end + 1;
}
/* get last param */
errno = 0;
char *endptr;
int val = strtol( segment_begin, &endptr, 10 );
if ( endptr == segment_begin ) {
val = -1;
}
if ( errno == 0 ) {
parsed_params.push_back( val );
}
parsed = true;
}
int Dispatcher::getparam( size_t N, int defaultval )
{
int ret = defaultval;
if ( !parsed ) {
parse_params();
}
if ( parsed_params.size() > N ) {
ret = parsed_params[ N ];
}
if ( ret < 1 ) ret = defaultval;
return ret;
}
int Dispatcher::param_count( void )
{
if ( !parsed ) {
parse_params();
}
return parsed_params.size();
}
std::string Dispatcher::str( void )
{
char assum[ 64 ];
snprintf( assum, 64, "[dispatch=\"%s\" params=\"%s\"]",
dispatch_chars.c_str(), params.c_str() );
return std::string( assum );
}
/* construct on first use to avoid static initialization order crash */
DispatchRegistry & Terminal::get_global_dispatch_registry( void )
{
static DispatchRegistry global_dispatch_registry;
return global_dispatch_registry;
}
static void register_function( Function_Type type,
std::string dispatch_chars,
Function f )
{
switch ( type ) {
case ESCAPE:
get_global_dispatch_registry().escape.insert( dispatch_map_t::value_type( dispatch_chars, f ) );
break;
case CSI:
get_global_dispatch_registry().CSI.insert( dispatch_map_t::value_type( dispatch_chars, f ) );
break;
case CONTROL:
get_global_dispatch_registry().control.insert( dispatch_map_t::value_type( dispatch_chars, f ) );
break;
}
}
Function::Function( Function_Type type, std::string dispatch_chars,
void (*s_function)( Framebuffer *, Dispatcher * ),
bool s_clears_wrap_state )
: function( s_function ), clears_wrap_state( s_clears_wrap_state )
{
register_function( type, dispatch_chars, *this );
}
void Dispatcher::dispatch( Function_Type type, const Parser::Action *act, Framebuffer *fb )
{
/* add final char to dispatch key */
if ( (type == ESCAPE) || (type == CSI) ) {
assert( act->char_present );
Parser::Collect act2;
act2.char_present = true;
act2.ch = act->ch;
collect( &act2 );
}
dispatch_map_t *map = NULL;
switch ( type ) {
case ESCAPE: map = &get_global_dispatch_registry().escape; break;
case CSI: map = &get_global_dispatch_registry().CSI; break;
case CONTROL: map = &get_global_dispatch_registry().control; break;
}
std::string key = dispatch_chars;
if ( type == CONTROL ) {
assert( act->ch <= 255 );
char ctrlstr[ 2 ] = { (char)act->ch, 0 };
key = std::string( ctrlstr, 1 );
}
dispatch_map_t::const_iterator i = map->find( key );
if ( i == map->end() ) {
/* unknown function */
fb->ds.next_print_will_wrap = false;
return;
} else {
act->handled = true;
if ( i->second.clears_wrap_state ) {
fb->ds.next_print_will_wrap = false;
}
return i->second.function( fb, this );
}
}
void Dispatcher::OSC_put( const Parser::OSC_Put *act )
{
assert( act->char_present );
if ( OSC_string.size() < 256 ) { /* should be a long enough window title */
OSC_string.push_back( act->ch );
act->handled = true;
}
}
void Dispatcher::OSC_start( const Parser::OSC_Start *act )
{
OSC_string.clear();
act->handled = true;
}
bool Dispatcher::operator==( const Dispatcher &x ) const
{
return ( params == x.params ) && ( parsed_params == x.parsed_params ) && ( parsed == x.parsed )
&& ( dispatch_chars == x.dispatch_chars ) && ( OSC_string == x.OSC_string ) && ( terminal_to_host == x.terminal_to_host );
}
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