[PATCH v5] git-p4: Obey core.ignorecase when using P4 client specs.

[larsxschneider@gmail.com]

From: Lars Schneider <larsxschneider@gmail.com>

We run P4 servers on Linux and P4 clients on Windows. For an unknown
reason the file path for a number of files in P4 does not match the
directory path with respect to case sensitivity.

E.g. "p4 files" might return
//depot/path/to/file1
//depot/pATH/to/file2

If you use P4/P4V then these files end up in the same directory, e.g.
//depot/path/to/file1
//depot/path/to/file2

If you use git-p4 and clone the code via client spec "//depot/path/..."
then all files not matching the case in the client spec will be ignored
(in the example above "file2"). This is correct if core.ignorecase=false
but not otherwise.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
---
 git-p4.py                         |   7 ++
 t/t9821-git-p4-path-variations.sh | 200 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 207 insertions(+)
 create mode 100755 t/t9821-git-p4-path-variations.sh

diff --git a/git-p4.py b/git-p4.py
index 073f87b..0093fa3 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -1950,10 +1950,14 @@ class View(object):
             if "unmap" in res:
                 # it will list all of them, but only one not unmap-ped
                 continue
+            if gitConfigBool("core.ignorecase"):
+                res['depotFile'] = res['depotFile'].lower()
             self.client_spec_path_cache[res['depotFile']] = self.convert_client_path(res["clientFile"])
 
         # not found files or unmap files set to ""
         for depotFile in fileArgs:
+            if gitConfigBool("core.ignorecase"):
+                depotFile = depotFile.lower()
             if depotFile not in self.client_spec_path_cache:
                 self.client_spec_path_cache[depotFile] = ""
 
@@ -1962,6 +1966,9 @@ class View(object):
            depot file should live.  Returns "" if the file should
            not be mapped in the client."""
 
+        if gitConfigBool("core.ignorecase"):
+            depot_path = depot_path.lower()
+
         if depot_path in self.client_spec_path_cache:
             return self.client_spec_path_cache[depot_path]
 
diff --git a/t/t9821-git-p4-path-variations.sh b/t/t9821-git-p4-path-variations.sh
new file mode 100755
index 0000000..599d16c
--- /dev/null
+++ b/t/t9821-git-p4-path-variations.sh
@@ -0,0 +1,200 @@
+#!/bin/sh
+
+test_description='Clone repositories with path case variations'
+
+. ./lib-git-p4.sh
+
+test_expect_success 'start p4d with case folding enabled' '
+	start_p4d -C1
+'
+
+test_expect_success 'Create a repo with path case variations' '
+	client_view "//depot/... //client/..." &&
+	(
+		cd "$cli" &&
+
+		mkdir -p One/two &&
+		>One/two/File2.txt &&
+		p4 add One/two/File2.txt &&
+		p4 submit -d "Add file2" &&
+		rm -rf One &&
+
+		mkdir -p one/TWO &&
+		>one/TWO/file1.txt &&
+		p4 add one/TWO/file1.txt &&
+		p4 submit -d "Add file1" &&
+		rm -rf one &&
+
+		mkdir -p one/two &&
+		>one/two/file3.txt &&
+		p4 add one/two/file3.txt &&
+		p4 submit -d "Add file3" &&
+		rm -rf one &&
+
+		mkdir -p outside-spec &&
+		>outside-spec/file4.txt &&
+		p4 add outside-spec/file4.txt &&
+		p4 submit -d "Add file4" &&
+		rm -rf outside-spec
+	)
+'
+
+test_expect_success 'Clone root' '
+	client_view "//depot/... //client/..." &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase false &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		# This method is used instead of "test -f" to ensure the case is
+		# checked even if the test is executed on case-insensitive file systems.
+		# All files are there as expected although the path cases look random.
+		cat >expect <<-\EOF &&
+		One/two/File2.txt
+		one/TWO/file1.txt
+		one/two/file3.txt
+		outside-spec/file4.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'Clone root (ignorecase)' '
+	client_view "//depot/... //client/..." &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase true &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		# This method is used instead of "test -f" to ensure the case is
+		# checked even if the test is executed on case-insensitive file systems.
+		# All files are there as expected although the path cases look random.
+		cat >expect <<-\EOF &&
+		one/TWO/File2.txt
+		one/TWO/file1.txt
+		one/TWO/file3.txt
+		outside-spec/file4.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'Clone root and ignore one file' '
+	client_view \
+		"//depot/... //client/..." \
+		"-//depot/one/TWO/file1.txt //client/one/TWO/file1.txt" &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase false &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		# We ignore one file in the client spec and all path cases change from
+		# "TWO" to "two"!
+		cat >expect <<-\EOF &&
+		One/two/File2.txt
+		one/two/file3.txt
+		outside-spec/file4.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'Clone root and ignore one file (ignorecase)' '
+	client_view \
+		"//depot/... //client/..." \
+		"-//depot/one/TWO/file1.txt //client/one/TWO/file1.txt" &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase true &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		# We ignore one file in the client spec and all path cases change from
+		# "TWO" to "two"!
+		cat >expect <<-\EOF &&
+		One/two/File2.txt
+		One/two/file3.txt
+		outside-spec/file4.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'Clone path' '
+	client_view "//depot/One/... //client/..." &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase false &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		cat >expect <<-\EOF &&
+		two/File2.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'Clone path (ignorecase)' '
+	client_view "//depot/One/... //client/..." &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase true &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		cat >expect <<-\EOF &&
+		TWO/File2.txt
+		TWO/file1.txt
+		TWO/file3.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+# It looks like P4 determines the path case based on the first file in
+# lexicographical order. Please note the lower case "two" directory for all
+# files triggered through the addition of "File0.txt".
+test_expect_success 'Add a new file and clone path with new file (ignorecase)' '
+	client_view "//depot/... //client/..." &&
+	(
+		cd "$cli" &&
+		mkdir -p One/two &&
+		>One/two/File0.txt &&
+		p4 add One/two/File0.txt &&
+		p4 submit -d "Add file" &&
+		rm -rf One
+	) &&
+
+	client_view "//depot/One/... //client/..." &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		git init . &&
+		git config core.ignorecase true &&
+		git p4 clone --use-client-spec --destination="$git" //depot &&
+		cat >expect <<-\EOF &&
+		two/File0.txt
+		two/File2.txt
+		two/file1.txt
+		two/file3.txt
+		EOF
+		git ls-files >actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'kill p4d' '
+	kill_p4d
+'
+
+test_done
-- 
1.9.5 (Apple Git-50.3)