use print function (#5610)

a step towards python 3 compatibility

em-config

@@ -11,14 +11,15 @@ This tool prints the value of the variable to stdout if one
 is found, or exits with 1 if the variable does not exist.
 '''
 
+from __future__ import print_function
 import os, sys, re
 from tools import shared
 
 if len(sys.argv) != 2 or \
   not re.match(r"^[\w\W_][\w\W_\d]*$", sys.argv[1]) or \
   not (sys.argv[1] in dir(shared)):
-  print 'Usage: em-config VAR_NAME'
+  print('Usage: em-config VAR_NAME')
   exit(1)
 
-print eval('shared.' + sys.argv[1])
+print(eval('shared.' + sys.argv[1]))
 

emar.py

@@ -7,6 +7,7 @@
 This script acts as a frontend replacement for ar. See emcc.
 '''
 
+from __future__ import print_function
 from tools.toolchain_profiler import ToolchainProfiler
 if __name__ == '__main__':
   ToolchainProfiler.record_process_start()
@@ -25,7 +26,7 @@ def run():
   newargs = [shared.LLVM_AR] + sys.argv[1:]
 
   if DEBUG:
-    print >> sys.stderr, 'emar:', sys.argv, '  ==>  ', newargs
+    print('emar:', sys.argv, '  ==>  ', newargs, file=sys.stderr)
 
   if len(newargs) > 2:
     to_delete = []

embuilder.py

@@ -4,11 +4,12 @@
 Tool to manage building of various useful things, such as libc, libc++, native optimizer, as well as fetch and build ports like zlib and sdl2
 '''
 
+from __future__ import print_function
 import os, sys
 import tools.shared as shared
 
 if len(sys.argv) < 2 or sys.argv[1] in ['-v', '-help', '--help', '-?', '?']:
-  print '''
+  print('''
 Emscripten System Builder Tool
 ==============================
 
@@ -60,7 +61,7 @@
 
 and set up the location to the native optimizer in ~/.emscripten
 
-'''
+''')
   sys.exit(0)
 
 C_BARE = '''
@@ -127,12 +128,12 @@ def build_port(port_name, lib_name, params):
       tasks = [x for x in tasks if x not in skip_tasks]
     else:
       if os.environ.get('EMSCRIPTEN_NATIVE_OPTIMIZER'):
-        print 'Skipping building of native-optimizer since environment variable EMSCRIPTEN_NATIVE_OPTIMIZER is present and set to point to a prebuilt native optimizer path.'
+        print('Skipping building of native-optimizer since environment variable EMSCRIPTEN_NATIVE_OPTIMIZER is present and set to point to a prebuilt native optimizer path.')
       elif hasattr(shared, 'EMSCRIPTEN_NATIVE_OPTIMIZER'):
-        print 'Skipping building of native-optimizer since .emscripten config file has set EMSCRIPTEN_NATIVE_OPTIMIZER to point to a prebuilt native optimizer path.'
+        print('Skipping building of native-optimizer since .emscripten config file has set EMSCRIPTEN_NATIVE_OPTIMIZER to point to a prebuilt native optimizer path.')
       else:
         tasks += ['native_optimizer']
-    print 'Building targets: %s' % ' '.join (tasks)
+    print('Building targets: %s' % ' '.join(tasks))
   for what in tasks:
     shared.logging.info('building and verifying ' + what)
     if what == 'compiler-rt':

emcc.py

@@ -23,6 +23,7 @@
   EMMAKEN_COMPILER - The compiler to be used, if you don't want the default clang.
 '''
 
+from __future__ import print_function
 from tools.toolchain_profiler import ToolchainProfiler, exit
 if __name__ == '__main__':
   ToolchainProfiler.record_process_start()
@@ -328,13 +329,13 @@ def run():
     # An online HTML version (which may be of a different version of Emscripten)
     #    is up at http://kripken.github.io/emscripten-site/docs/tools_reference/emcc.html
 
-    print '''%s
+    print('''%s
 
 ------------------------------------------------------------------
 
 emcc: supported targets: llvm bitcode, javascript, NOT elf
 (autoconf likes to see elf above to enable shared object support)
-''' % (open(shared.path_from_root('site', 'build', 'text', 'docs', 'tools_reference', 'emcc.txt')).read())
+''' % (open(shared.path_from_root('site', 'build', 'text', 'docs', 'tools_reference', 'emcc.txt')).read()))
     exit(0)
 
   elif sys.argv[1] == '--version':
@@ -347,22 +348,22 @@ def run():
       pass
     finally:
       os.chdir(here)
-    print '''emcc (Emscripten gcc/clang-like replacement) %s (%s)
+    print('''emcc (Emscripten gcc/clang-like replacement) %s (%s)
 Copyright (C) 2014 the Emscripten authors (see AUTHORS.txt)
 This is free and open source software under the MIT license.
 There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  ''' % (shared.EMSCRIPTEN_VERSION, revision)
+  ''' % (shared.EMSCRIPTEN_VERSION, revision))
     exit(0)
 
   elif len(sys.argv) == 2 and sys.argv[1] == '-v': # -v with no inputs
     # autoconf likes to see 'GNU' in the output to enable shared object support
-    print 'emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) %s' % shared.EMSCRIPTEN_VERSION
+    print('emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) %s' % shared.EMSCRIPTEN_VERSION)
     code = subprocess.call([shared.CLANG, '-v'])
     shared.check_sanity(force=True)
     exit(code)
 
   elif '-dumpmachine' in sys.argv:
-    print shared.get_llvm_target()
+    print(shared.get_llvm_target())
     exit(0)
 
   elif '--cflags' in sys.argv:
@@ -377,7 +378,7 @@ def run():
       line = re.search('running: (.*)', lines[0]).group(1)
       parts = shlex.split(line.replace('\\', '\\\\'))
       parts = filter(lambda x: x != '-c' and x != '-o' and input_file not in x and temp_target not in x and '-emit-llvm' not in x, parts)
-      print ' '.join(shared.Building.doublequote_spaces(parts[1:]))
+      print(' '.join(shared.Building.doublequote_spaces(parts[1:])))
     exit(0)
 
   def is_minus_s_for_emcc(newargs, i):
@@ -879,7 +880,7 @@ def check(input_file):
             value = '"' + value + '"'
         else:
           value = value.replace('\\', '\\\\')
-        exec 'shared.Settings.' + key + ' = ' + value in globals(), locals()
+        exec('shared.Settings.' + key + ' = ' + value, globals(), locals())
         if key == 'EXPORTED_FUNCTIONS':
           # used for warnings in emscripten.py
           shared.Settings.ORIGINAL_EXPORTED_FUNCTIONS = original_exported_response or shared.Settings.EXPORTED_FUNCTIONS[:]
@@ -2189,7 +2190,7 @@ def separate_asm_js(final, asm_target):
   # extra only-my-code logic
   if shared.Settings.ONLY_MY_CODE:
     temp = asm_target + '.only.js'
-    print jsrun.run_js(shared.path_from_root('tools', 'js-optimizer.js'), shared.NODE_JS, args=[asm_target, 'eliminateDeadGlobals', 'last', 'asm'], stdout=open(temp, 'w'))
+    print(jsrun.run_js(shared.path_from_root('tools', 'js-optimizer.js'), shared.NODE_JS, args=[asm_target, 'eliminateDeadGlobals', 'last', 'asm'], stdout=open(temp, 'w')))
     shutil.move(temp, asm_target)
 
 

emconfigure.py

@@ -17,6 +17,7 @@
   CONFIGURE_CC - see emcc
 '''
 
+from __future__ import print_function
 import os, sys
 from tools import shared
 from subprocess import CalledProcessError
@@ -26,15 +27,15 @@
 #
 def run():
   if len(sys.argv) < 2 or ('configure' not in sys.argv[1] and 'cmake' not in sys.argv[1]):
-    print >> sys.stderr, '''
+    print('''
   emconfigure is a helper for configure, setting various environment
   variables so that emcc etc. are used. Typical usage:
 
     emconfigure ./configure [FLAGS]
 
   (but you can run any command instead of configure)
 
-  '''
+  ''', file=sys.stderr)
   elif 'cmake' in sys.argv[1]:
     node_js = shared.NODE_JS
     if type(node_js) is list: node_js = node_js[0]

emlink.py

@@ -6,6 +6,7 @@
 See https://github.com/kripken/emscripten/wiki/Linking
 '''
 
+from __future__ import print_function
 import sys
 from tools import shared
 from tools.asm_module import AsmModule
@@ -14,12 +15,12 @@ def run():
   try:
     me, main, side, out = sys.argv[:4]
   except:
-    print >> sys.stderr, 'usage: emlink.py [main module] [side module] [output name]'
+    print('usage: emlink.py [main module] [side module] [output name]', file=sys.stderr)
     sys.exit(1)
 
-  print 'Main module:', main
-  print 'Side module:', side
-  print 'Output:', out
+  print('Main module:', main)
+  print('Side module:', side)
+  print('Output:', out)
 
   shared.try_delete(out)
 

emmake.py

@@ -18,6 +18,7 @@
 generate JavaScript.
 '''
 
+from __future__ import print_function
 import os, sys
 from tools import shared
 from subprocess import CalledProcessError
@@ -27,15 +28,15 @@
 #
 def run():
   if len(sys.argv) < 2 or sys.argv[1] != 'make':
-    print >> sys.stderr, '''
+    print('''
   emmake is a helper for make, setting various environment
   variables so that emcc etc. are used. Typical usage:
 
     emmake make [FLAGS]
 
   (but you can run any command instead of make)
 
-  '''
+  ''', file=sys.stderr)
 
   try:
     shared.Building.make(sys.argv[1:])

tools/asm_module.py

@@ -1,4 +1,5 @@
 
+from __future__ import print_function
 import sys, re, itertools
 
 import shared, js_optimizer
@@ -138,7 +139,7 @@ def relocate_into(self, main):
     def check_import(key, value):
       if value.startswith('+') or value.endswith('|0'): # ignore functions
         if key not in all_sendings:
-          print >> sys.stderr, 'warning: external variable %s is still not defined after linking' % key
+          print('warning: external variable %s is still not defined after linking' % key, file=sys.stderr)
           all_sendings[key] = '0'
     for key, value in all_imports.iteritems(): check_import(key, value)
 

tools/autodebugger.py

@@ -8,6 +8,7 @@
          there may be weird errors.
 '''
 
+from __future__ import print_function
 import os, sys, re
 
 ALLOW_POINTERS = True
@@ -264,5 +265,5 @@
 f.write(ll[:meta_start] + '\n' + POSTAMBLE + '\n' + ll[meta_start:])
 f.close()
 
-print 'Success.'
+print('Success.')
 

tools/autodebugger_c.py

@@ -5,11 +5,12 @@
 overwrite the files it is given!
 '''
 
+from __future__ import print_function
 import os, sys, re
 
 filenames = sys.argv[1:]
 for filename in filenames:
-  print '..%s..' % filename
+  print('..%s..' % filename)
 
   f = open(filename, 'r')
   data = f.read()
@@ -33,5 +34,5 @@
   f.write('\n'.join(lines))
   f.close()
 
-print 'Success.'
+print('Success.')
 

tools/autodebugger_indenter.py

@@ -3,6 +3,7 @@
 This script will indent the output nicely
 '''
 
+from __future__ import print_function
 import os, sys
 
 lines = sys.stdin.read().split('\n')
@@ -12,7 +13,7 @@
   line = lines[i]
   if line.startswith('AD:-2,'):
     depth -= 1
-  print str(depth) + '|' + line
+  print(str(depth) + '|' + line)
   if line.startswith('AD:-1,'):
     depth += 1
 

tools/autodebugger_js.py

@@ -4,6 +4,7 @@
 Similar to autodebugger.py, but runs on .js files.
 '''
 
+from __future__ import print_function
 import os, sys, re
 
 filename = sys.argv[1]
@@ -41,7 +42,7 @@
       left, right = lines[i].split(' = ')
       lines[i] += ''' print("%s = " + %s);''' % (left, left)
 
-print '\n'.join(lines)
+print('\n'.join(lines))
 
-print >> sys.stderr, 'Success.'
+print('Success.', file=sys.stderr)
 

tools/autodediffer.py

@@ -4,6 +4,7 @@
 Run it with filenames of two autodebugger logs as parameters
 '''
 
+from __future__ import print_function
 import os, sys
 
 
@@ -54,7 +55,7 @@ def process_line(line):
   assert av[0] == bv[0]
   diff = abs(av[1] - bv[1])
   if diff > MIN:
-    print '<<%d %d>>  %d : %.5f' % (ai, bi, av[0], diff)
+    print('<<%d %d>>  %d : %.5f' % (ai, bi, av[0], diff))
   ai += 1
   bi += 1