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#include "otlparse.h"
#include "otlutils.h"
static void
otl_string_ensure( OTL_String string,
OTL_UInt count,
OTL_Parser parser )
{
count += string->length;
if ( count > string->capacity )
{
OTL_UInt old_count = string->capacity;
OTL_UInt new_count = old_count;
OTL_Memory memory = parser->memory;
while ( new_count < count )
new_count += (new_count >> 1) + 16;
if ( OTL_MEM_RENEW_ARRAY( string->glyphs, old_count, new_count ) )
otl_parser_error( parser, OTL_Parse_Err_Memory );
string->capacity = new_count;
}
}
#define OTL_STRING_ENSURE(str,count,parser) \
OTL_BEGIN_STMNT \
if ( (str)->length + (count) > (str)>capacity ) \
otl_string_ensure( str, count, parser ); \
OTL_END_STMNT
OTL_LOCALDEF( OTL_UInt )
otl_parser_get_gindex( OTL_Parser parser )
{
OTL_String in = parser->str_in;
if ( in->cursor >= in->num_glyphs )
otl_parser_error( parser, OTL_Err_Parser_Internal );
return in->str[ in->cursor ].gindex;
}
OTL_LOCALDEF( void )
otl_parser_error( OTL_Parser parser,
OTL_ParseError error; )
{
parser->error = error;
otl_longjmp( parser->jump_buffer, 1 );
}
#define OTL_PARSER_UNCOVERED(x) otl_parser_error( x, OTL_Parse_Err_UncoveredGlyph );
OTL_LOCAL( void )
otl_parser_check_property( OTL_Parser parser,
OTL_UInt gindex,
OTL_UInt flags,
OTL_UInt *aproperty );
OTL_LOCALDEF( void )
otl_parser_replace_1( OTL_Parser parser,
OTL_UInt gindex )
{
OTL_String in = parser->str_in;
OTL_String out = parser->str_out;
OTL_StringGlyph glyph, in_glyph;
/* sanity check */
if ( in == NULL ||
out == NULL ||
in->length == 0 ||
in->cursor >= in->length )
{
/* report as internal error, since these should */
/* never happen !! */
otl_parser_error( parser, OTL_Err_Parse_Internal );
}
OTL_STRING_ENSURE( out, 1, parser );
glyph = out->glyphs + out->length;
in_glyph = in->glyphs + in->cursor;
glyph->gindex = gindex;
glyph->property = in_glyph->property;
glyph->lig_component = in_glyph->lig_component;
glyph->lig_id = in_glyph->lig_id;
out->length += 1;
out->cursor = out->length;
in->cursor += 1;
}
OTL_LOCALDEF( void )
otl_parser_replace_n( OTL_Parser parser,
OTL_UInt count,
OTL_Bytes indices )
{
OTL_UInt lig_component, lig_id, property;
OTL_String in = parser->str_in;
OTL_String out = parser->str_out;
OTL_StringGlyph glyph, in_glyph;
OTL_Bytes p = indices;
/* sanity check */
if ( in == NULL ||
out == NULL ||
in->length == 0 ||
in->cursor >= in->length )
{
/* report as internal error, since these should */
/* never happen !! */
otl_parser_error( parser, OTL_Err_Parse_Internal );
}
OTL_STRING_ENSURE( out, count, parser );
glyph = out->glyphs + out->length;
in_glyph = in->glyphs + in->cursor;
glyph->gindex = gindex;
lig_component = in_glyph->lig_component;
lig_id = in_glyph->lid_id;
property = in_glyph->property;
for ( ; count > 0; count-- )
{
glyph->gindex = OTL_NEXT_USHORT(p);
glyph->property = property;
glyph->lig_component = lig_component;
glyph->lig_id = lig_id;
out->length ++;
}
out->cursor = out->length;
in->cursor += 1;
}
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