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//
// srecord - manipulate eprom load files
// Copyright (C) 2003, 2005-2008, 2010, 2011 Peter Miller
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 program. If not, see
// <http://www.gnu.org/licenses/>.
//
#include <cctype>
#include <srecord/input/file/vmem.h>
#include <srecord/record.h>
srecord::input_file_vmem::~input_file_vmem()
{
}
srecord::input_file_vmem::input_file_vmem(const std::string &a_file_name) :
srecord::input_file(a_file_name),
seen_some_input(false),
address(0)
{
}
srecord::input_file::pointer
srecord::input_file_vmem::create(const std::string &a_file_name)
{
return pointer(new srecord::input_file_vmem(a_file_name));
}
bool
srecord::input_file_vmem::read(srecord::record &record)
{
for (;;)
{
int c = get_char();
if (c < 0)
{
if (!seen_some_input)
fatal_error("file contains no data");
return false;
}
if (c == '@')
{
// collect address
address = 0;
for (;;)
{
address = (address << 4) + get_nibble();
c = peek_char();
if (c < 0 || !isxdigit((unsigned char)c))
break;
}
continue;
}
if (isspace((unsigned char)c))
continue;
if (c == '/')
{
c = get_char();
if (c == '/')
{
for (;;)
{
c = get_char();
if (c == '\n' || c < 0)
break;
}
continue;
}
if (c == '*')
{
for (;;)
{
for (;;)
{
c = get_char();
if (c < 0)
{
eof_within_comment:
fatal_error("end-of-file within comment");
}
if (c == '*')
break;
}
for (;;)
{
c = get_char();
if (c < 0)
goto eof_within_comment;
if (c != '*')
break;
}
if (c =='/')
break;
}
continue;
}
fatal_error("malformed comment");
}
// collect value
get_char_undo(c);
unsigned char value[5];
size_t nbytes = 0;
while (nbytes < sizeof(value))
{
value[nbytes++] = get_byte();
c = peek_char();
if (c < 0 || !isxdigit((unsigned char)c))
break;
}
switch (nbytes)
{
default:
fatal_error("value has too many bytes (%d)", (int)nbytes);
case 1:
case 2:
case 4:
record =
srecord::record
(
srecord::record::type_data,
address * nbytes,
value,
nbytes
);
break;
}
// This is not a byte address, it's a chunk address.
++address;
seen_some_input = true;
return true;
}
}
const char *
srecord::input_file_vmem::get_file_format_name(void)
const
{
return "Verilog VMEM";
}
const char *
srecord::input_file_vmem::format_option_name(void)
const
{
return "-VMem";
}
// vim: set ts=8 sw=4 et :
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