added -M option to show generated man page

Ticket: ENT-11824
Changelog: None
Signed-off-by: Mikita Pilinka <mikita.pilinka@northern.tech>

cfbs/args.py

@@ -1,24 +1,41 @@
 import argparse
+import os
 
 from cfbs import commands
-from cfbs.utils import cache
+from cfbs.utils import cache, user_error
 
 
 def get_args():
-    parser = _get_arg_parser()
+    parser = get_arg_parser()
     args = parser.parse_args()
     return args
 
 
 def print_help():
-    parser = _get_arg_parser()
+    parser = get_arg_parser()
     parser.print_help()
 
 
+def get_manual():
+    file_path = os.path.join(os.path.dirname(__file__), "cfbs.1")
+    if os.path.exists(file_path):
+        try:
+            with open(file_path, "r", encoding="utf-8") as man_file:
+                man = man_file.read()
+                if not man:
+                    user_error("Manual file is empty")
+                else:
+                    return man
+        except OSError:
+            user_error("Error reading manual file " + file_path)
+    else:
+        user_error("Manual file does not exist")
+
+
 @cache
-def _get_arg_parser():
+def get_arg_parser():
     command_list = commands.get_command_names()
-    parser = argparse.ArgumentParser(description="CFEngine Build System.")
+    parser = argparse.ArgumentParser(prog="cfbs", description="CFEngine Build System.")
     parser.add_argument(
         "command",
         metavar="cmd",
@@ -34,6 +51,7 @@ def _get_arg_parser():
         type=str,
         default="warning",
     )
+    parser.add_argument("-M", "--manual", help="Print manual page", action="store_true")
     parser.add_argument(
         "--version", "-V", help="Print version number", action="store_true"
     )

cfbs/cfbs.1

@@ -0,0 +1,97 @@
+.TH CFBS "1" "2024\-06\-07" "cfbs" "CFEngine Build System manual"
+.SH NAME
+cfbs \- combines multiple modules into 1 policy set to deploy on your infrastructure. Modules can be custom promise types, JSON files which enable certain functionality, or reusable CFEngine policy. The modules you use can be written by the CFEngine team, others in the community, your colleagues, or yourself.
+.SH SYNOPSIS
+.B cfbs
+[-h] [--loglevel LOGLEVEL] [-M] [--version] [--force] [--non-interactive] [--index INDEX] [--check] [--checksum CHECKSUM] [--keep-order] [--git {yes,no}] [--git-user-name GIT_USER_NAME] [--git-user-email GIT_USER_EMAIL] [--git-commit-message GIT_COMMIT_MESSAGE] [--ignore-versions-json] [--masterfiles MASTERFILES] [cmd] [args ...]
+.SH DESCRIPTION
+CFEngine Build System.
+
+.TP
+\fBcmd\fR
+The command to perform (pretty, init, status, search, add, remove, clean, update, validate, download, build, install, help, info, show, input, set\-input, get\-input)
+
+.TP
+\fBargs\fR
+Command arguments
+
+.SH OPTIONS
+.TP
+\fB\-\-loglevel\fR \fI\,LOGLEVEL\/\fR, \fB\-l\fR \fI\,LOGLEVEL\/\fR
+Set log level for more/less detailed output
+
+.TP
+\fB\-M\fR, \fB\-\-manual\fR
+Print manual page
+
+.TP
+\fB\-\-version\fR, \fB\-V\fR
+Print version number
+
+.TP
+\fB\-\-force\fR
+Force rebuild / redownload
+
+.TP
+\fB\-\-non\-interactive\fR
+Don't prompt, use defaults (only for testing)
+
+.TP
+\fB\-\-index\fR \fI\,INDEX\/\fR
+Specify alternate index
+
+.TP
+\fB\-\-check\fR
+Check if file(s) would be reformatted
+
+.TP
+\fB\-\-checksum\fR \fI\,CHECKSUM\/\fR
+Expected checksum of the downloaded file
+
+.TP
+\fB\-\-keep\-order\fR
+Keep order of items in the JSON in 'cfbs pretty'
+
+.TP
+\fB\-\-git\fR \fI\,{yes,no}\/\fR
+Override git option in cfbs.json
+
+.TP
+\fB\-\-git\-user\-name\fR \fI\,GIT_USER_NAME\/\fR
+Specify git user name
+
+.TP
+\fB\-\-git\-user\-email\fR \fI\,GIT_USER_EMAIL\/\fR
+Specify git user email
+
+.TP
+\fB\-\-git\-commit\-message\fR \fI\,GIT_COMMIT_MESSAGE\/\fR
+Specify git commit message
+
+.TP
+\fB\-\-ignore\-versions\-json\fR
+Ignore versions.json. Necessary in case of a custom index or testing changes to the default index.
+
+.TP
+\fB\-\-masterfiles\fR \fI\,MASTERFILES\/\fR
+Add masterfiles on cfbs init choose between
+
+.br
+Binary packages may be downloaded from https://cfengine.com/download/.
+.br
+The source code is available at https://github.com/cfengine/
+.SH BUGS
+Please see the public bug-tracker at https://northerntech.atlassian.net/projects/CFE/.
+.br
+GitHub pull-requests may be submitted to https://github.com/cfengine/cfbs.
+.SH "SEE ALSO"
+.BR cf-promises (8),
+.BR cf-agent (8),
+.BR cf-serverd (8),
+.BR cf-execd (8),
+.BR cf-monitord (8),
+.BR cf-runagent (8),
+.BR cf-key (8)
+.SH AUTHOR
+    Northern.tech AS
+

cfbs/commands.py

@@ -2,6 +2,7 @@
 Functions ending in "_command" are dynamically included in the list of commands
 in main.py for -h/--help/help.
 """
+
 import os
 import re
 import copy

cfbs/main.py

@@ -10,7 +10,7 @@
 from cfbs.utils import user_error, is_cfbs_repo, ProgrammerError
 from cfbs.cfbs_config import CFBSConfig
 from cfbs import commands
-from cfbs.args import get_args, print_help
+from cfbs.args import get_args, print_help, get_manual
 
 
 def init_logging(level):
@@ -36,7 +36,9 @@ def init_logging(level):
 def main() -> int:
     args = get_args()
     init_logging(args.loglevel)
-
+    if args.manual:
+        print(get_manual())
+        return 0
     if args.version:
         print("cfbs %s" % version())
         return 0

cfbs/man_generator.py

@@ -0,0 +1,43 @@
+import os
+from utils import user_error
+from args import get_arg_parser
+
+try:
+    from build_manpages.manpage import Manpage
+except ImportError:
+    user_error("'Manpage' dependency not satisfied")
+
+
+def generate_man_page():
+    manpage = Manpage(get_arg_parser())
+    manpage.manual = "CFEngine Build System manual"
+    manpage.description = "combines multiple modules into 1 policy set to deploy on your infrastructure. Modules can be custom promise types, JSON files which enable certain functionality, or reusable CFEngine policy. The modules you use can be written by the CFEngine team, others in the community, your colleagues, or yourself."
+    body = (
+        str(manpage)
+        + """
+.br
+Binary packages may be downloaded from https://cfengine.com/download/.
+.br
+The source code is available at https://github.com/cfengine/
+.SH BUGS
+Please see the public bug-tracker at https://northerntech.atlassian.net/projects/CFE/.
+.br
+GitHub pull-requests may be submitted to https://github.com/cfengine/cfbs.
+.SH "SEE ALSO"
+.BR cf-promises (8),
+.BR cf-agent (8),
+.BR cf-serverd (8),
+.BR cf-execd (8),
+.BR cf-monitord (8),
+.BR cf-runagent (8),
+.BR cf-key (8)
+.SH AUTHOR
+    Northern.tech AS
+        """
+    )
+    with open(os.path.dirname(__file__) + "/cfbs.1", "w", encoding="utf-8") as man_file:
+        man_file.write(body)
+    return body
+
+
+generate_man_page()

setup.py

@@ -22,6 +22,8 @@
 with open("cfbs/VERSION", "w", encoding="utf-8") as fh:
     fh.write("%s\n" % cfbs_version)
 
+assert os.path.isfile("cfbs/cfbs.1")
+
 with open("README.md", "r", encoding="utf-8") as fh:
     long_description = fh.read()
 
@@ -35,7 +37,7 @@
     long_description_content_type="text/markdown",
     url="https://github.com/cfengine/cfbs",
     packages=setuptools.find_packages(exclude=["tests*"]),
-    package_data={"cfbs": ["VERSION"]},
+    package_data={"cfbs": ["VERSION", "cfbs.1"]},
     include_package_data=True,
     classifiers=[
         "Programming Language :: Python :: 3",