Added hacked version of ccc script used to invoke the static analyzer. This

will gradually get pruned down, as it doesn't need to be as functional as
'ccc'.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48806 91177308-0d34-0410-b5e6-96231b3b80d8

utils/ccc-analyzer

@@ -0,0 +1,220 @@
+#!/usr/bin/env python
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+#
+# A reduced version of the 'ccc' script that is designed to handle off
+# actual compilation to gcc, but run the code passed to gcc through the
+# static analyzer.
+#
+##===----------------------------------------------------------------------===##
+
+import sys
+import subprocess
+import os
+
+def error(message):
+    print >> sys.stderr, 'ccc: ' + message
+    sys.exit(1)
+
+def run(args):
+    print >> sys.stderr, ' '.join(args)
+    print >> sys.stderr, '\n'    
+    code = subprocess.call(args)
+    if code > 255:
+        code = 1
+    if code:
+        sys.exit(code)
+
+def preprocess(args):
+    command = 'clang -E'.split()
+    run(command + args)
+
+def compile(args):
+  print >> sys.stderr, '\n'
+  command = 'gcc'.split()
+  run(command + args)
+
+def remove_pch_extension(path):
+      i = path.rfind('.gch')
+      if i < 0:
+          return path
+      return path[:i]
+
+def analyze(args,language,output,files):
+    if language.find("c++") > 0:
+      return
+  
+    print >> sys.stderr, ' '.join(['\n[LOCATION]:', os.getcwd(), '\n' ])
+    
+    print_args = []
+    
+    i = 0
+    while i < len(args):
+        print_args.append(''.join([ '\'', args[i], '\'' ]))
+        i += 1
+    
+    if language.find("header") > 0:
+      target = remove_pch_extension(output)
+      command = 'cp'.split()
+      args = command + files + target.split()      
+    else:
+      command = 'clang --grsimple'.split()
+      args = command + args
+      
+    print >> sys.stderr, ' '.join(command+print_args)
+    print >> sys.stderr, '\n'    
+    subprocess.call(args)
+
+def link(args):
+    command = 'gcc'.split()
+    run(command + args)
+
+def extension(path):
+    return path.split(".")[-1]
+
+def changeextension(path, newext):
+    i = path.rfind('.')
+    if i < 0:
+        return path
+    j = path.rfind('/', 0, i)
+    print path
+    if j < 0:
+        return path[:i] + "." + newext
+    return path[j+1:i] + "." + newext
+
+def inferlanguage(extension):
+  if extension == "c":
+      return "c"
+  elif extension in ["cpp", "cc"]:
+      return "c++"
+  elif extension == "i":
+      return "c-cpp-output"
+  elif extension == "m":
+      return "objective-c"
+  elif extension == "mi":
+      return "objective-c-cpp-output"
+  else:
+      return "unknown"
+
+def main(args):
+    old_args = args
+    action = 'link'
+    output = ''
+    compile_opts = [ ]
+    link_opts = [ ]
+    files = []
+    save_temps = 0
+    language = ''
+    
+    i = 0
+    while i < len(args):
+        arg = args[i]
+
+        # Modes ccc supports
+        if arg == '-E':
+            action = 'preprocess'
+        if arg == '-c':
+            action = 'compile'
+        if arg.startswith('-print-prog-name'):
+            action = 'print-prog-name'
+        if arg == '-save-temps':
+            save_temps = 1
+
+        # Options with no arguments that should pass through
+        if arg in ['-v']:
+            compile_opts.append(arg)
+            link_opts.append(arg)
+        
+        # Options with one argument that should be ignored
+        if arg in ['--param', '-arch', '-u']:
+            i += 1
+
+        # Prefix matches for the compile mode
+        if arg[:2] in ['-D', '-I', '-U', '-F']:
+            if not arg[2:]:
+                arg += args[i+1]
+                i += 1
+            compile_opts.append(arg)
+        if arg[:5] in ['-std=']:
+            compile_opts.append(arg)
+
+        # Options with one argument that should pass through
+        if arg in ['-include']:
+            compile_opts.append(arg)
+            compile_opts.append(args[i+1])
+            i += 1
+
+        # Prefix matches for the link mode
+        if arg[:2] in ['-l', '-L', '-O', '-F']:
+            if arg == '-O': arg = '-O1'
+            if arg == '-Os': arg = '-O2'
+            link_opts.append(arg)
+
+        # Options with one argument that should pass through
+        if arg in ['-framework']:
+            link_opts.append(arg)
+            link_opts.append(args[i+1])
+            i += 1
+
+        # Input files
+        if arg == '-filelist':
+            f = open(args[i+1])
+            for line in f:
+                files.append(line.strip())
+            f.close()
+            i += 1
+        if arg == '-x':
+            language = args[i+1]
+            i += 1
+        if arg[0] != '-':
+            files.append(arg)
+
+        # Output file
+        if arg == '-o':
+            output = args[i+1]
+            i += 1
+
+        i += 1
+
+    if action == 'print-prog-name':
+        # assume we can handle everything
+        print sys.argv[0]
+        return
+
+    if not files:
+        error('no input files')
+
+    if action == 'preprocess' or save_temps:
+      compile(args)
+
+    if action == 'compile' or save_temps:
+        for i, file in enumerate(files):
+            if not language:
+                language = inferlanguage(extension(file))
+            if save_temps and action != "compile":
+                # Need a temporary output file
+                coutput = changeextension(file, "o");
+                files[i] = coutput
+            elif not output:
+                coutput = changeextension(file, "o")
+            else:
+                coutput = output
+            analyze_args = [ file ]
+            if language != 'unknown':
+              analyze_args = analyze_args + [ '-x', language ]
+            analyze_args = analyze_args + compile_opts
+            analyze(analyze_args,language,output,files)
+        compile(args)
+
+
+    if action == 'link':
+        link(args)
+#        analyze(link_opts)
+
+if __name__ == '__main__':
+    main(sys.argv[1:])