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proposing new --format=<format> --out-file=<file.ext> feature #17507

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proposing new --format=<format> --out-file=<file.ext> feature #17507

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410372a
proposing new --format=file.ext feature
memsharded Dec 19, 2024
8a2a443
change approach and some simplifications
czoido Dec 19, 2024
463493e
remove unused
czoido Dec 19, 2024
0b5a991
minor changes
czoido Dec 19, 2024
859c512
minor changes
czoido Dec 19, 2024
434da37
simplify a bit
czoido Dec 20, 2024
1f72ab9
fix format
czoido Dec 20, 2024
65a1dc1
Merge branch 'develop2' into feature/output_files
czoido Dec 20, 2024
0a06ba3
minor changes
czoido Dec 20, 2024
9f103e0
fix
czoido Dec 20, 2024
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18 changes: 12 additions & 6 deletions conan/cli/command.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import argparse
import textwrap
from contextlib import redirect_stdout

from conan.api.output import ConanOutput
from conan.errors import ConanException
Expand Down Expand Up @@ -67,6 +68,8 @@ def _init_formatters(self, parser):
if formatters:
help_message = "Select the output format: {}".format(", ".join(formatters))
parser.add_argument('-f', '--format', action=OnceArgument, help=help_message)
parser.add_argument("--out-file", action=OnceArgument,
help="Write the output of the command to the specified file instead of stdout.")

@property
def name(self):
Expand All @@ -83,19 +86,22 @@ def doc(self):
def _format(self, parser, info, *args):
parser_args, _ = parser.parse_known_args(*args)

default_format = "text"
try:
formatarg = parser_args.format or default_format
except AttributeError:
formatarg = default_format
formatarg = getattr(parser_args, "format", None) or "text"
out_file = getattr(parser_args, "out_file", None)

try:
formatter = self._formatters[formatarg]
except KeyError:
raise ConanException("{} is not a known format. Supported formatters are: {}".format(
formatarg, ", ".join(self._help_formatters)))

formatter(info)
if out_file:
with open(out_file, 'w') as f:
with redirect_stdout(f):
formatter(info)
ConanOutput().info(f"Formatted output saved to '{out_file}'")
else:
formatter(info)

@staticmethod
def _dispatch_errors(info):
Expand Down
31 changes: 31 additions & 0 deletions test/integration/command_v2/test_output.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
import json

from conan.test.assets.genconanfile import GenConanfile
from conan.test.utils.tools import TestClient
from conan.test.utils.env import environment_update
Expand Down Expand Up @@ -260,3 +262,32 @@ def test_exception_errors(self):
t.run("create . -vquiet", assert_error=True)
assert "ERROR: Tagged error" not in t.out
assert "ConanException: Untagged error" not in t.out


def test_formatter_redirection_to_file():
c = TestClient(light=True)
c.save({"conanfile.py": GenConanfile("pkg", "0.1")})

c.run("config home --out-file=cmd_out.txt")
assert "Formatted output saved to 'cmd_out.txt'" in c.out
cmd_out = c.load("cmd_out.txt")
assert f"{c.cache_folder}" in cmd_out
assert not f"{c.cache_folder}" in c.stdout

c.run("graph info . --format=json --out-file=graph.json")
assert "Formatted output saved to 'graph.json'" in c.out
graph = json.loads(c.load("graph.json"))
assert len(graph["graph"]["nodes"]) == 1
assert not "nodes" in c.stdout

c.run("graph info . --format=html --out-file=graph.html")
assert "Formatted output saved to 'graph.html'" in c.out
html = c.load("graph.html")
assert "<head>" in html
assert not "<head>" in c.stdout

c.run("install . --format=json --out-file=graph.json")
assert "Formatted output saved to 'graph.json'" in c.out
graph = json.loads(c.load("graph.json"))
assert len(graph["graph"]["nodes"]) == 1
assert not "nodes" in c.stdout
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