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{
    "id": 21700,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/21700/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/21700/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20241018193246.805-5-laurent.pinchart@ideasonboard.com>",
    "date": "2024-10-18T19:32:46",
    "name": "[4/4] utils: checkstyle.py: Centralize dependency handling for checkers",
    "commit_ref": "7ff6fd9774e5697eebddc28170d8cb36b1ad4c37",
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "7a48e33c7ac256c10a0f3379bdaaab780917ec8d",
    "submitter": {
        "id": 2,
        "url": "https://patchwork.libcamera.org/api/1.1/people/2/?format=api",
        "name": "Laurent Pinchart",
        "email": "laurent.pinchart@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/21700/mbox/",
    "series": [
        {
            "id": 4723,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4723/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4723",
            "date": "2024-10-18T19:32:42",
            "name": "utils: checkstyle.py: Improve dependency handling",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4723/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/21700/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/21700/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
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            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 5EB9BC3300\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 18 Oct 2024 19:33:06 +0000 (UTC)",
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        ],
        "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"RDWyhN7F\"; dkim-atps=neutral",
        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1729279874;\n\tbh=W6dqA0GHMyI4YC4hIoVftEIx0pRv9/FVT+RZFyaxKAM=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=RDWyhN7F0uim1i/XHeLMFyB0XrfIJzoe3CUEeTe2Hb2KWyEaoJAoaDl8VYRwbmGcH\n\tPKP8EKjlYzebBSAhk6dAMmW5q1TdVZFZNftYEzsP56/CkgDqKE6oldRmUagt+JTUUK\n\tv4X/rccuCI1E2M+Va45PKb7uj5gAapCDxKuhSRgg=",
        "From": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Stefan Klug <stefan.klug@ideasonboard.com>",
        "Subject": "[PATCH 4/4] utils: checkstyle.py: Centralize dependency handling for\n\tcheckers",
        "Date": "Fri, 18 Oct 2024 22:32:46 +0300",
        "Message-ID": "<20241018193246.805-5-laurent.pinchart@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.45.2",
        "In-Reply-To": "<20241018193246.805-1-laurent.pinchart@ideasonboard.com>",
        "References": "<20241018193246.805-1-laurent.pinchart@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "The checkstyle.py script depends on external tools. Those dependencies\nare handled in different ways in different parts of the code. Centralize\nthe management of checker-specific dependencies to simplify the checkers\nand output more consistent error messages.\n\nThis fixes a crash in the Pep8Formatter class when the autopep8\ndependency is not found.\n\nFixes: 8ffaf376bb53 (\"utils: checkstyle: Add a python formatter\")\nSigned-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n utils/checkstyle.py | 81 ++++++++++++++++++++++++++++++---------------\n 1 file changed, 55 insertions(+), 26 deletions(-)",
    "diff": "diff --git a/utils/checkstyle.py b/utils/checkstyle.py\nindex 3f841a54d54a..f6229bbd86ce 100755\n--- a/utils/checkstyle.py\n+++ b/utils/checkstyle.py\n@@ -23,7 +23,6 @@ import subprocess\n import sys\n \n dependencies = {\n-    'clang-format': True,\n     'git': True,\n }\n \n@@ -346,9 +345,6 @@ class ClassRegistry(type):\n \n \n class CheckerBase(metaclass=ClassRegistry):\n-    #\n-    # Class methods\n-    #\n     @classmethod\n     def instances(cls, obj, names):\n         for instance in cls.subclasses:\n@@ -378,6 +374,22 @@ class CheckerBase(metaclass=ClassRegistry):\n \n         return patterns\n \n+    @classmethod\n+    def check_dependencies(cls):\n+        if not hasattr(cls, 'dependencies'):\n+            return []\n+\n+        issues = []\n+\n+        for command in cls.dependencies:\n+            if command not in dependencies:\n+                dependencies[command] = shutil.which(command)\n+\n+            if not dependencies[command]:\n+                issues.append(CommitIssue(f'Missing {command} to run {cls.__name__}'))\n+\n+        return issues\n+\n \n # ------------------------------------------------------------------------------\n # Commit Checkers\n@@ -710,6 +722,7 @@ class MesonChecker(StyleChecker):\n \n \n class ShellChecker(StyleChecker):\n+    dependencies = ('shellcheck',)\n     patterns = ('*.sh',)\n     results_line_regex = re.compile(r'In - line ([0-9]+):')\n \n@@ -718,12 +731,8 @@ class ShellChecker(StyleChecker):\n         issues = []\n         data = ''.join(content).encode('utf-8')\n \n-        try:\n-            ret = subprocess.run(['shellcheck', '-Cnever', '-'],\n-                                 input=data, stdout=subprocess.PIPE)\n-        except FileNotFoundError:\n-            issues.append(StyleIssue(0, None, None, 'Please install shellcheck to validate shell script additions'))\n-            return issues\n+        ret = subprocess.run(['shellcheck', '-Cnever', '-'],\n+                             input=data, stdout=subprocess.PIPE)\n \n         results = ret.stdout.decode('utf-8').splitlines()\n         for nr, item in enumerate(results):\n@@ -750,6 +759,7 @@ class Formatter(CheckerBase):\n \n \n class CLangFormatter(Formatter):\n+    dependencies = ('clang-format',)\n     patterns = ('*.c', '*.cpp', '*.h')\n     priority = -1\n \n@@ -879,17 +889,13 @@ class IncludeOrderFormatter(Formatter):\n \n \n class Pep8Formatter(Formatter):\n+    dependencies = ('autopep8',)\n     patterns = ('*.py',)\n \n     @classmethod\n     def format(cls, filename, data):\n-        try:\n-            ret = subprocess.run(['autopep8', '--ignore=E501', '-'],\n-                                 input=data.encode('utf-8'), stdout=subprocess.PIPE)\n-        except FileNotFoundError:\n-            issues.append(StyleIssue(0, None, None, 'Please install autopep8 to format python additions'))\n-            return issues\n-\n+        ret = subprocess.run(['autopep8', '--ignore=E501', '-'],\n+                             input=data.encode('utf-8'), stdout=subprocess.PIPE)\n         return ret.stdout.decode('utf-8')\n \n \n@@ -908,6 +914,24 @@ class StripTrailingSpaceFormatter(Formatter):\n # Style checking\n #\n \n+def check_commit(top_level, commit, checkers):\n+    issues = []\n+\n+    # Apply the commit checkers first.\n+    for checker in CommitChecker.instances(commit, checkers):\n+        issues_ = checker.check_dependencies()\n+        if issues_:\n+            issues += issues_\n+            continue\n+\n+        issues += checker.check(commit, top_level)\n+\n+    for issue in issues:\n+        print(issue)\n+\n+    return len(issues)\n+\n+\n def check_file(top_level, commit, filename, checkers):\n     # Extract the line numbers touched by the commit.\n     commit_diff = commit.get_diff(top_level, filename)\n@@ -923,9 +947,15 @@ def check_file(top_level, commit, filename, checkers):\n     # Format the file after the commit with all formatters and compute the diff\n     # between the unformatted and formatted contents.\n     after = commit.get_file(filename)\n+    issues = []\n \n     formatted = after\n     for formatter in Formatter.instances(filename, checkers):\n+        issues_ = formatter.check_dependencies()\n+        if issues_:\n+            issues += issues_\n+            continue\n+\n         formatted = formatter.format(filename, formatted)\n \n     after = after.splitlines(True)\n@@ -938,8 +968,12 @@ def check_file(top_level, commit, filename, checkers):\n     formatted_diff = [hunk for hunk in formatted_diff if hunk.intersects(lines)]\n \n     # Check for code issues not related to formatting.\n-    issues = []\n     for checker in StyleChecker.instances(filename, checkers):\n+        issues_ = checker.check_dependencies()\n+        if issues_:\n+            issues += issues_\n+            continue\n+\n         for hunk in commit_diff:\n             issues += checker.check(after, hunk.side('to').touched)\n \n@@ -955,7 +989,7 @@ def check_file(top_level, commit, filename, checkers):\n             print(hunk)\n \n     if len(issues):\n-        issues = sorted(issues, key=lambda i: i.line_number)\n+        issues = sorted(issues, key=lambda i: getattr(i, 'line_number', -1))\n         for issue in issues:\n             print(issue)\n \n@@ -969,13 +1003,8 @@ def check_style(top_level, commit, checkers):\n     print(title)\n     print(separator)\n \n-    issues = 0\n-\n     # Apply the commit checkers first.\n-    for checker in CommitChecker.instances(commit, checkers):\n-        for issue in checker.check(commit, top_level):\n-            print(issue)\n-            issues += 1\n+    issues = check_commit(top_level, commit, checkers)\n \n     # Filter out files we have no checker for.\n     patterns = set()\n@@ -1047,7 +1076,7 @@ def main(argv):\n     if args.checkers:\n         args.checkers = args.checkers.split(',')\n \n-    # Check for required dependencies.\n+    # Check for required common dependencies.\n     for command, mandatory in dependencies.items():\n         found = shutil.which(command)\n         if mandatory and not found:\n",
    "prefixes": [
        "4/4"
    ]
}