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/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* Copyright (C) 2009-2011 Kouhei Sutou <kou@clear-code.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 3 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 Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <stdlib.h>
#include <glib/gi18n.h>
#include "cut-main.h"
#include "cut-colorize-differ.h"
#include "cut-unified-differ.h"
#include "cut-console.h"
#include "cut-console-diff-writer.h"
static gboolean use_color = FALSE;
static gboolean unified_diff = FALSE;
static gint context_lines = -1;
static gchar **labels = NULL;
static gboolean
print_version (const gchar *option_name, const gchar *value,
gpointer data, GError **error)
{
g_print("%s\n", VERSION);
exit(EXIT_SUCCESS);
return TRUE;
}
static gboolean
parse_color_arg (const gchar *option_name, const gchar *value,
gpointer data, GError **error)
{
return cut_console_parse_color_arg(option_name, value,
&use_color, error);
}
static const GOptionEntry option_entries[] =
{
{"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, print_version,
N_("Show version"), NULL},
{"color", 'c', G_OPTION_FLAG_OPTIONAL_ARG, G_OPTION_ARG_CALLBACK,
parse_color_arg, N_("Output diff with colors"),
"[yes|true|no|false|auto]"},
{"unified", 'u', 0, G_OPTION_ARG_NONE, &unified_diff,
N_("Use unified diff format"), NULL},
{"context-lines", '\0', 0, G_OPTION_ARG_INT, &context_lines,
N_("Use LINES as diff context lines"), "LINES"},
{"label", 'L', 0, G_OPTION_ARG_STRING_ARRAY, &labels,
N_("Use LABEL as label"), "LABEL"},
{NULL}
};
static gboolean
pre_parse (GOptionContext *context, GOptionGroup *group, gpointer data,
GError **error)
{
use_color = cut_console_guess_color_usability();
return TRUE;
}
static void
print_diff_header (CutDiffWriter *writer,
const gchar *from_label, const gchar *to_label)
{
cut_diff_writer_mark_line(writer, "---", " ", from_label,
CUT_DIFF_WRITER_TAG_DELETED_MARK);
cut_diff_writer_mark_line(writer, "+++", " ", to_label,
CUT_DIFF_WRITER_TAG_INSERTED_MARK);
}
static gboolean
print_diff (const gchar *from, const gchar *to)
{
GError *error = NULL;
gchar *from_contents, *to_contents;
CutDiffer *differ;
CutDiffWriter *writer;
const gchar *from_label = from;
const gchar *to_label = to;
if (!g_file_get_contents(from, &from_contents, NULL, &error)) {
g_print("%s\n", error->message);
g_error_free(error);
return FALSE;
}
if (!g_file_get_contents(to, &to_contents, NULL, &error)) {
g_print("%s\n", error->message);
g_error_free(error);
g_free(from_contents);
return FALSE;
}
if (labels[0]) {
from_label = labels[0];
if (labels[1]) {
to_label = labels[1];
}
}
writer = cut_console_diff_writer_new(use_color);
if (unified_diff) {
differ = cut_unified_differ_new(from_contents, to_contents);
cut_unified_differ_set_from_label(differ, from_label);
cut_unified_differ_set_to_label(differ, to_label);
} else {
if (use_color) {
differ = cut_colorize_differ_new(from_contents, to_contents);
} else {
differ = cut_readable_differ_new(from_contents, to_contents);
}
print_diff_header(writer, from_label, to_label);
}
if (context_lines > 0)
cut_differ_set_context_size(differ, context_lines);
cut_differ_diff(differ, writer);
g_object_unref(writer);
g_object_unref(differ);
return TRUE;
}
int
main (int argc, char *argv[])
{
gboolean success = TRUE;
GOptionContext *option_context;
GOptionGroup *main_group;
GError *error = NULL;
cut_init_environment(&argc, &argv);
option_context = g_option_context_new(N_("FILE_FROM FILE_TO"));
g_option_context_set_help_enabled(option_context, TRUE);
g_option_context_set_ignore_unknown_options(option_context, FALSE);
main_group = g_option_group_new(NULL, NULL, NULL, option_context, NULL);
g_option_group_add_entries(main_group, option_entries);
g_option_group_set_parse_hooks(main_group, pre_parse, NULL);
g_option_group_set_translation_domain(main_group, GETTEXT_PACKAGE);
g_option_context_set_main_group(option_context, main_group);
if (!g_option_context_parse(option_context, &argc, &argv, &error)) {
g_print("%s\n", error->message);
g_error_free(error);
g_option_context_free(option_context);
exit(EXIT_FAILURE);
}
if (argc != 3) {
gint help_argc = 2;
gchar *help_argv[2];
gchar **help_argv_p;
help_argv[0] = argv[0];
help_argv[1] = "--help";
help_argv_p = help_argv;
g_option_context_parse(option_context, &help_argc, &help_argv_p, NULL);
g_option_context_free(option_context);
exit(EXIT_FAILURE);
}
success = print_diff(argv[1], argv[2]);
cut_quit_environment();
return success ? EXIT_SUCCESS : EXIT_FAILURE;
}
/*
vi:ts=4:nowrap:ai:expandtab:sw=4
*/
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