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Added support for here documents

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This commit is contained in:
Clifford Wolf 2014-07-26 17:21:40 +02:00
parent 3f4e3ca8ad
commit 267c615640
3 changed files with 63 additions and 18 deletions
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31
kernel/register.cc
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@ -276,6 +276,9 @@ void Frontend::execute(std::vector<std::string> args, RTLIL::Design *design)
} while (!args.empty());
}
FILE *Frontend::current_script_file = NULL;
std::string Frontend::last_here_document;
void Frontend::extra_args(FILE *&f, std::string &filename, std::vector<std::string> args, size_t argidx)
{
bool called_with_fp = f != NULL;
@ -291,7 +294,33 @@ void Frontend::extra_args(FILE *&f, std::string &filename, std::vector<std::stri
cmd_error(args, argidx, "Extra filename argument in direct file mode.");
filename = arg;
f = fopen(filename.c_str(), "r");
if (filename == "<<" && argidx+1 < args.size())
filename += args[++argidx];
if (filename.substr(0, 2) == "<<") {
if (Frontend::current_script_file == NULL)
log_error("Unexpected here document '%s' outside of script!\n", filename.c_str());
if (filename.size() <= 2)
log_error("Missing EOT marker in here document!\n");
std::string eot_marker = filename.substr(2);
last_here_document.clear();
while (1) {
std::string buffer;
char block[4096];
while (1) {
if (fgets(block, 4096, Frontend::current_script_file) == NULL)
log_error("Unexpected end of file in here document '%s'!\n", filename.c_str());
buffer += block;
if (buffer.size() > 0 && (buffer[buffer.size() - 1] == '\n' || buffer[buffer.size() - 1] == '\r'))
break;
}
int indent = buffer.find_first_not_of(" \t\r\n");
if (buffer.substr(indent, eot_marker.size()) == eot_marker)
break;
last_here_document += buffer;
}
f = fmemopen((void*)last_here_document.c_str(), last_here_document.size(), "r");
} else
f = fopen(filename.c_str(), "r");
if (f == NULL)
log_cmd_error("Can't open input file `%s' for reading: %s\n", filename.c_str(), strerror(errno));