call gcc to compile and link jtlc-written C sources

jtlc

@@ -3,6 +3,9 @@
 import os
 import sys
 import argparse
+import tempfile
+from subprocess import *
+import re
 
 def main(argv):
     parser = argparse.ArgumentParser(prog = 'jtlc',
@@ -16,7 +19,43 @@ def main(argv):
     parser.add_argument('sources', metavar = 'source',
             nargs = '*', help = 'Input Source File')
     args = parser.parse_args(argv[1:])
+
+    if len(args.sources) < 1:
+        sys.stderr.write(argv[0] + ': no input files\n')
+        return 1
+
+    ofiles = []
+    for s in args.sources:
+        tf = tempfile.NamedTemporaryFile(suffix = '.c', delete = False)
+        tfname = tf.name
+        build(args, s, tf)
+        tf.close()
+        m = re.match('(.*)\.jtl', s)
+        if m is not None:
+            ofname = m.group(1) + '.o'
+        else:
+            ofname = s + '.o'
+        do_compile(args, tfname, ofname)
+        os.unlink(tfname)
+        ofiles.append(ofname)
+
+    if not args.c:
+        do_link(args, ofiles)
+
     return 0
 
+def build(args, source, dest):
+    dest.write('hi\n')
+
+def do_compile(args, source_fname, ofname):
+    Popen(['gcc', '-o', ofname, '-c', source_fname]).wait()
+
+def do_link(args, ofiles):
+    cmd = ['gcc']
+    if args.output_file is not None:
+        cmd += ['-o', args.output_file]
+    cmd += ofiles
+    Popen(cmd).wait()
+
 if __name__ == '__main__':
     sys.exit(main(sys.argv))