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/* plugin-flake8-diagnostic-tool.c
*
* Copyright 2025 Christian Hergert <chergert@redhat.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include "line-reader-private.h"
#include "plugin-flake8-diagnostic-tool.h"
#define FLAKE8_DEFAULT_FORMAT "^(?<filename>[^:]+):(?<line>\\d+):(?<column>\\d+):\\s+(?<code>[^\\s]+)\\s+(?<text>.*)$"
struct _PluginFlake8DiagnosticTool
{
FoundryDiagnosticTool parent_instance;
};
G_DEFINE_FINAL_TYPE (PluginFlake8DiagnosticTool, plugin_flake8_diagnostic_tool, FOUNDRY_TYPE_DIAGNOSTIC_TOOL)
static inline FoundryDiagnosticSeverity
parse_severity (const char *code)
{
switch (code[0])
{
case 'F':
return FOUNDRY_DIAGNOSTIC_FATAL;
case 'E':
return FOUNDRY_DIAGNOSTIC_ERROR;
case 'W':
return FOUNDRY_DIAGNOSTIC_WARNING;
case 'I':
return FOUNDRY_DIAGNOSTIC_NOTE;
default:
return FOUNDRY_DIAGNOSTIC_NOTE;
}
}
static DexFuture *
plugin_flake8_diagnostic_tool_dup_bytes_for_stdin (FoundryDiagnosticTool *diagnostic_tool,
GFile *file,
GBytes *contents,
const char *laguage)
{
g_assert (PLUGIN_IS_FLAKE8_DIAGNOSTIC_TOOL (diagnostic_tool));
g_assert (!file || G_IS_FILE (file));
g_assert (file || contents);
if (contents == NULL)
return dex_file_load_contents_bytes (file);
else
return dex_future_new_take_boxed (G_TYPE_BYTES, g_bytes_ref (contents));
}
static DexFuture *
plugin_flake8_diagnostic_tool_extract_from_stdout (FoundryDiagnosticTool *diagnostic_tool,
GFile *file,
GBytes *contents,
const char *language,
GBytes *stdout_bytes)
{
static GRegex *regex;
g_autoptr(FoundryContext) context = NULL;
g_autoptr(GListStore) store = NULL;
g_autoptr(GError) error = NULL;
LineReader reader;
const char *l;
gsize len;
g_assert (PLUGIN_IS_FLAKE8_DIAGNOSTIC_TOOL (diagnostic_tool));
g_assert (!file || G_IS_FILE (file));
g_assert (file || contents);
g_assert (stdout_bytes);
if (regex == NULL)
regex = g_regex_new (FLAKE8_DEFAULT_FORMAT, G_REGEX_OPTIMIZE, 0, NULL);
context = foundry_contextual_dup_context (FOUNDRY_CONTEXTUAL (diagnostic_tool));
store = g_list_store_new (FOUNDRY_TYPE_DIAGNOSTIC);
line_reader_init (&reader,
(char *)g_bytes_get_data (stdout_bytes, NULL),
g_bytes_get_size (stdout_bytes));
while ((l = line_reader_next (&reader, &len)))
{
g_autoptr(FoundryDiagnosticBuilder) builder = NULL;
g_autoptr(FoundryDiagnostic) diagnostic = NULL;
g_autoptr(GMatchInfo) match_info = NULL;
g_autofree char *filename = NULL;
g_autofree char *line = NULL;
g_autofree char *column = NULL;
g_autofree char *code = NULL;
g_autofree char *text = NULL;
g_autofree char *message = NULL;
FoundryDiagnosticSeverity severity;
guint64 lineno;
guint64 columnno;
if (!g_regex_match_full (regex, l, len, 0, 0, &match_info, NULL) ||
!g_match_info_matches (match_info))
continue;
filename = g_match_info_fetch (match_info, 1);
line = g_match_info_fetch (match_info, 2);
column = g_match_info_fetch (match_info, 3);
code = g_match_info_fetch (match_info, 4);
text = g_match_info_fetch (match_info, 5);
severity = parse_severity (code);
lineno = g_ascii_strtoull (line, NULL, 10);
columnno = g_ascii_strtoull (column, NULL, 10);
message = g_strdup_printf ("%s: %s", code, text);
builder = foundry_diagnostic_builder_new (context);
foundry_diagnostic_builder_set_file (builder, file);
foundry_diagnostic_builder_set_line (builder, lineno);
foundry_diagnostic_builder_set_line_offset (builder, columnno);
foundry_diagnostic_builder_set_severity (builder, severity);
foundry_diagnostic_builder_take_message (builder, g_steal_pointer (&message));
diagnostic = foundry_diagnostic_builder_end (builder);
g_list_store_append (store, diagnostic);
}
return dex_future_new_take_object (g_steal_pointer (&store));
}
static void
plugin_flake8_diagnostic_tool_class_init (PluginFlake8DiagnosticToolClass *klass)
{
FoundryDiagnosticToolClass *diagnostic_tool_class = FOUNDRY_DIAGNOSTIC_TOOL_CLASS (klass);
diagnostic_tool_class->dup_bytes_for_stdin = plugin_flake8_diagnostic_tool_dup_bytes_for_stdin;
diagnostic_tool_class->extract_from_stdout = plugin_flake8_diagnostic_tool_extract_from_stdout;
}
static void
plugin_flake8_diagnostic_tool_init (PluginFlake8DiagnosticTool *self)
{
foundry_diagnostic_tool_set_argv (FOUNDRY_DIAGNOSTIC_TOOL (self),
FOUNDRY_STRV_INIT ("flake8", "--format=default", "-"));
}
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