Added support for backslash continuation in script files

diff --git a/kernel/driver.cc b/kernel/driver.cc
index 6d139f19710f4464d4c22ec00f47aa8d4d25688f..d31d36b2d595b6f28fc21e7aa7329083255cbe4a 100644 (file)
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -39,8 +39,11 @@ bool fgetline(FILE *f, std::string &buffer)
                if (fgets(block, 4096, f) == NULL)
                        return false;
                buffer += block;
-               if (buffer.size() > 0 && (buffer[buffer.size()-1] == '\n' ||  buffer[buffer.size()-1] == '\r'))
+               if (buffer.size() > 0 && (buffer[buffer.size()-1] == '\n' ||  buffer[buffer.size()-1] == '\r')) {
+                       while (buffer.size() > 0 && (buffer[buffer.size()-1] == '\n' ||  buffer[buffer.size()-1] == '\r'))
+                               buffer.resize(buffer.size()-1);
                        return true;
+               }
        }
 }
 
@@ -67,8 +70,16 @@ static void run_frontend(std::string filename, std::string command, RTLIL::Desig
                if (f == NULL)
                        log_error("Can't open script file `%s' for reading: %s\n", filename.c_str(), strerror(errno));
                std::string command;
-               while (fgetline(f, command))
+               while (fgetline(f, command)) {
+                       while (!command.empty() && command[command.size()-1] == '\\') {
+                               std::string next_line;
+                               if (!fgetline(f, next_line))
+                                       break;
+                               command.resize(command.size()-1);
+                               command += next_line;
+                       }
                        Pass::call(design, command);
+               }
                if (!command.empty())
                        Pass::call(design, command);
                if (filename != "-")