layer-settings.c

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/*
 * GDSII-Converter
 * Copyright (C) 2019  Mario Hüttel <mario.huettel@gmx.net>
 *
 * This file is part of GDSII-Converter.
 *
 * GDSII-Converter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * GDSII-Converter 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include <gds-render/layer/layer-settings.h>
#include <stdlib.h>
 
struct _LayerSettings {
        GObject parent;
        GList *layer_infos;
        gpointer padding[12];
};
 
G_DEFINE_TYPE(LayerSettings, layer_settings, G_TYPE_OBJECT)
 
static void layer_settings_init(LayerSettings *self)
{
        self->layer_infos = NULL;
}
 
static void layer_info_delete_with_name(struct layer_info *const info)
{
        if (!info)
                return;
 
        if (info->name)
                free(info->name);
        free(info);
}
 
static void layer_settings_dispose(GObject *obj)
{
        LayerSettings *self;
 
        self = GDS_RENDER_LAYER_SETTINGS(obj);
 
        if (self->layer_infos) {
                g_list_free_full(self->layer_infos, (GDestroyNotify)layer_info_delete_with_name);
                self->layer_infos = NULL;
        }
 
        G_OBJECT_CLASS(layer_settings_parent_class)->dispose(obj);
}
 
static void layer_settings_class_init(LayerSettingsClass *klass)
{
        GObjectClass *oclass;
 
        oclass = G_OBJECT_CLASS(klass);
        oclass->dispose = layer_settings_dispose;
 
        return;
}
 
static struct layer_info *layer_info_copy(const struct layer_info * const info)
{
        struct layer_info *copy;
 
        if (!info)
                return 0;
 
        copy = (struct layer_info *)malloc(sizeof(struct layer_info));
        if (!copy)
                return 0;
 
        /* Copy data */
        memcpy(copy, info, sizeof(struct layer_info));
        /* Duplicate string */
        if (info->name)
                copy->name = strdup(info->name);
 
        return copy;
}
 
LayerSettings *layer_settings_new()
{
        return g_object_new(GDS_RENDER_TYPE_LAYER_SETTINGS, NULL);
}
 
int layer_settings_append_layer_info(LayerSettings *settings, struct layer_info *info)
{
        struct layer_info *info_copy;
 
        g_return_val_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings), -1);
        if (!info)
                return -2;
 
        /* Copy layer info */
        info_copy = layer_info_copy(info);
 
        /* Append to list */
        settings->layer_infos = g_list_append(settings->layer_infos, info_copy);
 
        return (settings->layer_infos ? 0 : -3);
}
 
void layer_settings_clear(LayerSettings *settings)
{
        g_return_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings));
 
        /* Clear list and delete layer_info structs including the name field */
        g_list_free_full(settings->layer_infos, (GDestroyNotify)layer_info_delete_with_name);
        settings->layer_infos = NULL;
}
 
int layer_settings_remove_layer(LayerSettings *settings, int layer)
{
        GList *list_iter;
        GList *found = NULL;
        struct layer_info *inf;
 
        g_return_val_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings), -1);
 
        /* Find in list */
        for (list_iter = settings->layer_infos; list_iter; list_iter = list_iter->next) {
                inf = (struct layer_info *)list_iter->data;
 
                if (!inf)
                        continue;
                if (inf->layer == layer)
                        found = list_iter;
        }
 
        if (found)  {
                /* Free the layer_info struct */
                layer_info_delete_with_name((struct layer_info *)found->data);
                /* Delete the list element */
                settings->layer_infos = g_list_delete_link(settings->layer_infos, found);
                return 0;
        }
 
        return -2;
}
 
GList *layer_settings_get_layer_info_list(LayerSettings *settings)
{
        g_return_val_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings), NULL);
        return settings->layer_infos;
}
 
static void layer_settings_gen_csv_line(GString *string, struct layer_info *linfo)
{
        int i;
 
        g_string_printf(string, "%d:%lf:%lf:%lf:%lf:%d:%s\n",
                        linfo->layer, linfo->color.red, linfo->color.green,
                        linfo->color.blue, linfo->color.alpha, (linfo->render ? 1 : 0), linfo->name);
        /* Fix broken locale settings */
        for (i = 0; string->str[i]; i++) {
                if (string->str[i] == ',')
                        string->str[i] = '.';
        }
 
        for (i = 0; string->str[i]; i++) {
                if (string->str[i] == ':')
                        string->str[i] = ',';
        }
}
 
int layer_settings_to_csv(LayerSettings *settings, const char *path)
{
        GFile *file;
        GOutputStream *w_fstream;
        GString *string;
        GList *info_iter;
        struct layer_info *linfo;
        int ret = 0;
 
        file = g_file_new_for_path(path);
        w_fstream = G_OUTPUT_STREAM(g_file_replace(file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, NULL));
        if (!w_fstream) {
                ret = -1;
                goto ret_unref_file;
        }
 
        /* Allocate new working buffer string. A size bigger than 200 is unexpected, but possible
         * 200 is a tradeoff between memory usage and preventing the necessity of realloc'ing the string
         */
        string = g_string_new_len(NULL, 200);
        if (!string) {
                ret = -2;
                goto ret_close_file;
        }
 
        /* Loop over layers and write CSV lines */
        for (info_iter = settings->layer_infos; info_iter; info_iter = info_iter->next) {
                linfo = (struct layer_info *)info_iter->data;
 
                layer_settings_gen_csv_line(string, linfo);
                g_output_stream_write(w_fstream, string->str, string->len * sizeof(gchar), NULL, NULL);
        }
 
        /* Delete string */
        g_string_free(string, TRUE);
ret_close_file:
        g_output_stream_flush(w_fstream, NULL, NULL);
        g_output_stream_close(w_fstream, NULL, NULL);
        g_object_unref(w_fstream);
ret_unref_file:
        g_object_unref(file);
 
        return ret;
}
 
static int layer_settings_load_csv_line_from_stream(GDataInputStream *stream, struct layer_info *linfo)
{
        int ret;
        gsize len;
        gchar *line;
        GRegex *regex;
        GMatchInfo *mi;
        char *match;
 
        if (!linfo) {
                ret = 1;
                goto ret_direct;
        }
 
        regex = g_regex_new("^(?<layer>[0-9]+),(?<r>[0-9\\.]+),(?<g>[0-9\\.]+),(?<b>[0-9\\.]+),(?<a>[0-9\\.]+),(?<export>[01]),(?<name>.*)$", 0, 0, NULL);
 
        line = g_data_input_stream_read_line(stream, &len, NULL, NULL);
        if (!line) {
                ret = -1;
                goto destroy_regex;
        }
 
        /* Match line in CSV */
        g_regex_match(regex, line, 0, &mi);
        if (g_match_info_matches(mi)) {
                /* Line is valid */
                match = g_match_info_fetch_named(mi, "layer");
                linfo->layer = (int)g_ascii_strtoll(match, NULL, 10);
                g_free(match);
                match = g_match_info_fetch_named(mi, "r");
                linfo->color.red = g_ascii_strtod(match, NULL);
                g_free(match);
                match = g_match_info_fetch_named(mi, "g");
                linfo->color.green = g_ascii_strtod(match, NULL);
                g_free(match);
                match = g_match_info_fetch_named(mi, "b");
                linfo->color.blue = g_ascii_strtod(match, NULL);
                g_free(match);
                match = g_match_info_fetch_named(mi, "a");
                linfo->color.alpha = g_ascii_strtod(match, NULL);
                g_free(match);
                match = g_match_info_fetch_named(mi, "export");
                linfo->render = ((!strcmp(match, "1")) ? 1 : 0);
                g_free(match);
                match = g_match_info_fetch_named(mi, "name");
                linfo->name = match;
 
                ret = 0;
        } else {
                /* Line is malformatted */
                printf("Could not recognize line in CSV as valid entry: %s\n", line);
                ret = 1;
        }
 
        g_match_info_free(mi);
        g_free(line);
destroy_regex:
        g_regex_unref(regex);
ret_direct:
        return ret;
 
}
 
int layer_settings_load_from_csv(LayerSettings *settings, const char *path)
{
        GFile *file;
        int ret = 0;
        GInputStream *in_stream;
        GDataInputStream *data_stream;
        int parser_ret;
        int stacked_pos;
        struct layer_info linfo;
 
        file = g_file_new_for_path(path);
        in_stream = G_INPUT_STREAM(g_file_read(file, NULL, NULL));
 
        g_return_val_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings), -2);
 
        if (!in_stream) {
                ret = -1;
                goto ret_destroy_file;
        }
        /* Delete old settings */
        layer_settings_clear(settings);
 
        data_stream = g_data_input_stream_new(in_stream);
 
        stacked_pos = 0;
        while ((parser_ret = layer_settings_load_csv_line_from_stream(data_stream, &linfo)) >= 0) {
                /* Line broken */
                if (parser_ret == 1)
                        continue;
 
                linfo.stacked_position = stacked_pos++;
 
                layer_settings_append_layer_info(settings, &linfo);
                /* Clear name to prevent memory leak */
                if (linfo.name)
                        g_free(linfo.name);
        }
 
        g_object_unref(data_stream);
        g_object_unref(in_stream);
ret_destroy_file:
        g_object_unref(file);
 
        return ret;
}