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[PATCH v4 02/11] git-p4: change the expansion test from basestring to list

From
Ben Keene via GitGitGadget <gitgitgadget@gmail.com>
Date
Dec 4, 2019, 22:29 UTC
Message-ID
<0ef2f56b04803cad2e60bf881e86d8bdd69463a6.1575498577.git.gitgitgadget@gmail.com>
In-Reply-To
<pull.463.v4.git.1575498577.gitgitgadget@gmail.com>
From: Ben Keene <seraphire@gmail.com>
Python 3+ handles strings differently than Python 2.7.  Since Python 2 is reaching it's end of life, a series of changes are being submitted to enable python 3.7+ support. The current code fails basic tests under python 3.7.
Change references to basestring in the isinstance tests to use list instead. This prepares the code to remove all references to basestring.
The original code used basestring in a test to determine if a list or literal string was passed into 9 different functions.  This is used to determine if the shell should be evoked when calling subprocess methods.
Signed-off-by: Ben Keene <seraphire@gmail.com>
(cherry picked from commit 5b1b1c145479b5d5fd242122737a3134890409e6)
---
 git-p4.py | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/git-p4.py b/git-p4.py
index b2ffbc057b..0f27996393 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -109,7 +109,7 @@ def p4_build_cmd(cmd):
         # Provide a way to not pass this option by setting git-p4.retries to 0
         real_cmd += ["-r", str(retries)]
 
-    if isinstance(cmd,basestring):
+    if not isinstance(cmd, list):
         real_cmd = ' '.join(real_cmd) + ' ' + cmd
     else:
         real_cmd += cmd
@@ -175,7 +175,7 @@ def write_pipe(c, stdin):
     if verbose:
         sys.stderr.write('Writing pipe: %s\n' % str(c))
 
-    expand = isinstance(c,basestring)
+    expand = not isinstance(c, list)
     p = subprocess.Popen(c, stdin=subprocess.PIPE, shell=expand)
     pipe = p.stdin
     val = pipe.write(stdin)
@@ -197,7 +197,7 @@ def read_pipe_full(c):
     if verbose:
         sys.stderr.write('Reading pipe: %s\n' % str(c))
 
-    expand = isinstance(c,basestring)
+    expand = not isinstance(c, list)
     p = subprocess.Popen(c, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=expand)
     (out, err) = p.communicate()
     return (p.returncode, out, err)
@@ -233,7 +233,7 @@ def read_pipe_lines(c):
     if verbose:
         sys.stderr.write('Reading pipe: %s\n' % str(c))
 
-    expand = isinstance(c, basestring)
+    expand = not isinstance(c, list)
     p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
     pipe = p.stdout
     val = pipe.readlines()
@@ -276,7 +276,7 @@ def p4_has_move_command():
     return True
 
 def system(cmd, ignore_error=False):
-    expand = isinstance(cmd,basestring)
+    expand = not isinstance(cmd, list)
     if verbose:
         sys.stderr.write("executing %s\n" % str(cmd))
     retcode = subprocess.call(cmd, shell=expand)
@@ -288,7 +288,7 @@ def system(cmd, ignore_error=False):
 def p4_system(cmd):
     """Specifically invoke p4 as the system command. """
     real_cmd = p4_build_cmd(cmd)
-    expand = isinstance(real_cmd, basestring)
+    expand = not isinstance(real_cmd, list)
     retcode = subprocess.call(real_cmd, shell=expand)
     if retcode:
         raise CalledProcessError(retcode, real_cmd)
@@ -526,7 +526,7 @@ def getP4OpenedType(file):
 # Return the set of all p4 labels
 def getP4Labels(depotPaths):
     labels = set()
-    if isinstance(depotPaths,basestring):
+    if not isinstance(depotPaths, list):
         depotPaths = [depotPaths]
 
     for l in p4CmdList(["labels"] + ["%s..." % p for p in depotPaths]):
@@ -613,7 +613,7 @@ def isModeExecChanged(src_mode, dst_mode):
 def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None, skip_info=False,
         errors_as_exceptions=False):
 
-    if isinstance(cmd,basestring):
+    if not isinstance(cmd, list):
         cmd = "-G " + cmd
         expand = True
     else:
@@ -630,7 +630,7 @@ def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None, skip_info=False,
     stdin_file = None
     if stdin is not None:
         stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
-        if isinstance(stdin,basestring):
+        if not isinstance(stdin, list):
             stdin_file.write(stdin)
         else:
             for i in stdin:
-- 
gitgitgadget
Previous: Ben KeeneNext: Denton Liu
Message 18 of 77 in “git-p4.py: Cast byte strings to unicode strings in python3”
  1. 0/1 git-p4.py: Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Nov 13, 2019
  2. 1/1 Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Nov 13, 2019
  3. Junio C HamanoNov 14, 2019
  4. Luke DiamandNov 14, 2019
  5. 0/3 git-p4.py: Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Nov 15, 2019
  6. 1/3 Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Nov 15, 2019
  7. 2/3 FIX: cast as unicode fails when a value is already unicodeBen Keene via GitGitGadget, Nov 15, 2019
  8. 3/3 FIX: wrap return for read_pipe_lines in ustring() and wrap GitLFS read of the pointer file in ustring()Ben Keene via GitGitGadget, Nov 15, 2019
  9. 0/1 git-p4.py: Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Dec 2, 2019
  10. 1/1 Python3 support for t9800 tests. Basic P4/Python3 supportBen Keene via GitGitGadget, Dec 2, 2019
  11. Denton LiuDec 3, 2019
  12. Ben KeeneDec 3, 2019
  13. Denton LiuDec 4, 2019
  14. 00/11 git-p4.py: Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Dec 4, 2019
  15. 01/11 git-p4: select p4 binary by operating-systemBen Keene via GitGitGadget, Dec 4, 2019
  16. Denton LiuDec 5, 2019
  17. Ben KeeneDec 5, 2019
  18. 02/11 git-p4: change the expansion test from basestring to listBen Keene via GitGitGadget, Dec 4, 2019
  19. Denton LiuDec 5, 2019
  20. Ben KeeneDec 5, 2019
  21. 03/11 git-p4: add new helper functions for python3 conversionBen Keene via GitGitGadget, Dec 4, 2019
  22. Denton LiuDec 5, 2019
  23. Ben KeeneDec 5, 2019
  24. 05/11 git-p4: Add new functions in preparation of usageBen Keene via GitGitGadget, Dec 4, 2019
  25. Denton LiuDec 5, 2019
  26. Ben KeeneDec 5, 2019
  27. 04/11 git-p4: python3 syntax changesBen Keene via GitGitGadget, Dec 4, 2019
  28. Denton LiuDec 5, 2019
  29. 08/11 git-p4: p4CmdList - support Unicode encodingBen Keene via GitGitGadget, Dec 4, 2019
  30. Junio C HamanoDec 5, 2019
  31. Ben KeeneDec 5, 2019
  32. 07/11 git-p4: Add a helper class for stream writingBen Keene via GitGitGadget, Dec 4, 2019
  33. Junio C HamanoDec 5, 2019
  34. Ben KeeneDec 5, 2019
  35. 06/11 git-p4: Fix assumed path separators to be more Windows friendlyBen Keene via GitGitGadget, Dec 4, 2019
  36. Junio C HamanoDec 5, 2019
  37. Ben KeeneDec 5, 2019
  38. 09/11 git-p4: Add usability enhancementsBen Keene via GitGitGadget, Dec 4, 2019
  39. Junio C HamanoDec 5, 2019
  40. Ben KeeneDec 5, 2019
  41. 10/11 git-p4: Support python3 for basic P4 clone, sync, and submitBen Keene via GitGitGadget, Dec 4, 2019
  42. 11/11 git-p4: Added --encoding parameter to p4 cloneBen Keene via GitGitGadget, Dec 4, 2019
  43. Luke DiamandDec 5, 2019
  44. Ben KeeneDec 5, 2019
  45. Denton LiuDec 5, 2019
  46. Ben KeeneDec 5, 2019
  47. 00/15 git-p4.py: Cast byte strings to unicode strings in python3Ben Keene via GitGitGadget, Dec 7, 2019
  48. 01/15 t/gitweb-lib.sh: drop confusing quotesJeff King via GitGitGadget, Dec 7, 2019
  49. 02/15 t/gitweb-lib.sh: set $REQUEST_URIJeff King via GitGitGadget, Dec 7, 2019
  50. 03/15 git-p4: select P4 binary by operating-systemBen Keene via GitGitGadget, Dec 7, 2019
  51. Junio C HamanoDec 9, 2019
  52. 05/15 git-p4: promote encodeWithUTF8() to a global functionBen Keene via GitGitGadget, Dec 7, 2019
  53. Junio C HamanoDec 11, 2019
  54. 04/15 git-p4: change the expansion test from basestring to listBen Keene via GitGitGadget, Dec 7, 2019
  55. Junio C HamanoDec 9, 2019
  56. Ben KeeneDec 13, 2019
  57. 06/15 git-p4: remove p4_write_pipe() and write_pipe() return valuesBen Keene via GitGitGadget, Dec 7, 2019
  58. 11/15 git-p4: add Py23File() - helper class for stream writingBen Keene via GitGitGadget, Dec 7, 2019
  59. 08/15 git-p4: add casting helper functions for python 3 conversionBen Keene via GitGitGadget, Dec 7, 2019
  60. 09/15 git-p4: python 3 syntax changesBen Keene via GitGitGadget, Dec 7, 2019
  61. 10/15 git-p4: fix assumed path separators to be more Windows friendlyBen Keene via GitGitGadget, Dec 7, 2019
  62. 15/15 git-p4: Add depot manipulation functionsBen Keene via GitGitGadget, Dec 7, 2019
  63. 14/15 git-p4: added --encoding parameter to p4 cloneBen Keene via GitGitGadget, Dec 7, 2019
  64. 07/15 git-p4: add new support function gitConfigSet()Ben Keene via GitGitGadget, Dec 7, 2019
  65. Junio C HamanoDec 11, 2019
  66. 13/15 git-p4: support Python 3 for basic P4 clone, sync, and submit (t9800)Ben Keene via GitGitGadget, Dec 7, 2019
  67. 12/15 git-p4: p4CmdList - support Unicode encodingBen Keene via GitGitGadget, Dec 7, 2019
  68. Jeff KingDec 7, 2019
  69. Ben KeeneDec 7, 2019
  70. Junio C HamanoDec 11, 2019
  71. Denton LiuDec 11, 2019
  72. Junio C HamanoDec 11, 2019
  73. Luke DiamandDec 11, 2019
  74. Junio C HamanoDec 11, 2019
  75. Yang ZhaoDec 11, 2019
  76. Ben KeeneDec 12, 2019
  77. Ben KeeneDec 13, 2019

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