add rmplugin: plugin command table with a count of what is missing

2 files changed, 175 insertions, 0 deletions

diff --git a/kon/konrmplugin.c b/kon/konrmplugin.c
new file mode 100644
index 0000000..175afc1
--- /dev/null
+++ b/kon/konrmplugin.c
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * konrmplugin.c
+ *
+ * Copyright (c) 2026 KonAki
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "konrmplugin.h"
+
+#include <string.h>
+
+/*** table ***/
+
+void kon_rmPluginsInit(kon_rmPlugins_t *plugins, const kon_rmPluginEntry_t *entries, int count, void *user)
+{
+	if (!plugins) return;
+	memset(plugins, 0, sizeof *plugins);
+	plugins->entries = entries;
+	plugins->count = entries && count > 0 ? count : 0;
+	plugins->user = user;
+}
+
+static void miss(kon_rmPlugins_t *plugins, const char *name)
+{
+	int i;
+
+	plugins->missedTotal++;
+	for (i = 0; i < plugins->missedCount; i++) {
+		if (!strcmp(plugins->missed[i].name, name)) {
+			plugins->missed[i].count++;
+			return;
+		}
+	}
+	if (plugins->missedCount >= KON_RM_PLUGIN_MISSED) return;
+	strncpy(plugins->missed[plugins->missedCount].name, name, sizeof plugins->missed[0].name - 1);
+	plugins->missed[plugins->missedCount].count = 1;
+	plugins->missedCount++;
+}
+
+/*** commands ***/
+
+int kon_rmPluginHost(kon_rmPlugins_t *plugins, int code, const char *text)
+{
+	char buffer[1024];
+	const char *argv[KON_RM_PLUGIN_ARGS];
+	char sep = code == 357 ? '\t' : ' ';
+	int argc = 0, i;
+	char *s;
+
+	if (!plugins || (code != 356 && code != 357)) return -1;
+	if (!text) text = "";
+	strncpy(buffer, text, sizeof buffer - 1);
+	buffer[sizeof buffer - 1] = '\0';
+
+	/* MZ gives the plugin and then the command, they become plugin.command. the rest is split in place */
+	if (code == 357 && (s = strchr(buffer, '\t')) != NULL) *s = '.';
+	s = buffer;
+	while (argc < KON_RM_PLUGIN_ARGS) {
+		argv[argc++] = s;
+		while (*s && *s != sep) s++;
+		if (!*s) break;
+		*s++ = '\0';
+	}
+	for (i = 0; i < plugins->count; i++) {
+		const kon_rmPluginEntry_t *e = &plugins->entries[i];
+
+		if (!e->name || strcmp(e->name, argv[0])) continue;
+		return e->fn ? e->fn(argc, argv, plugins->user) : 0;
+	}
+	miss(plugins, argv[0]);
+	return 0;
+}
+
+int kon_rmPluginMissed(const kon_rmPlugins_t *plugins, int index, const char **name, int *count)
+{
+	if (!plugins || index < 0 || index >= plugins->missedCount) return 0;
+	if (name) *name = plugins->missed[index].name;
+	if (count) *count = plugins->missed[index].count;
+	return 1;
+}
diff --git a/kon/konrmplugin.h b/kon/konrmplugin.h
new file mode 100644
index 0000000..4b0c3a3
--- /dev/null
+++ b/kon/konrmplugin.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * konrmplugin.h
+ *
+ * Copyright (c) 2026 KonAki
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef KONRMPLUGIN_H
+#define KONRMPLUGIN_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*** definition ***/
+
+/* plugin commands of RPG Maker games (356 in MV, 357 in MZ), the way mzscript writes them. what a plugin does is its own JavaScript,
+   which is never run, so each command a game uses is something you answer yourself, by name. you hand over a table of names and
+   functions. a name with a NULL function is known and does nothing, for the ones that only dress up the original. a command that
+   is not in the table does nothing too, but is counted, so you can see what a game still needs */
+
+#define KON_RM_PLUGIN_ARGS 16
+#define KON_RM_PLUGIN_MISSED 64
+
+/* argv[0] is the command and argc counts it, the rest are what came after, apart by spaces in MV and by tabs in MZ (where the
+   command is the plugin, a dot, then the command). they are only good while the function runs. return 1 when the script is to wait */
+typedef int (*kon_rmPluginFn)(int argc, const char *const *argv, void *user);
+
+typedef struct kon_rmPluginEntry {
+	const char *name;
+	kon_rmPluginFn fn;
+} kon_rmPluginEntry_t;
+
+typedef struct kon_rmPlugins {
+	const kon_rmPluginEntry_t *entries;
+	int count;
+	void *user;
+	struct {
+		char name[48];
+		int count;
+	} missed[KON_RM_PLUGIN_MISSED];
+	int missedCount; /* kinds written down in missed */
+	int missedTotal; /* all of the commands that were not in the table */
+} kon_rmPlugins_t;
+
+void kon_rmPluginsInit(kon_rmPlugins_t *plugins, const kon_rmPluginEntry_t *entries, int count, void *user);
+
+/* returns -1 when the code is not 356 or 357, else what the command's function said, or 0 */
+int kon_rmPluginHost(kon_rmPlugins_t *plugins, int code, const char *text);
+
+/* the commands that were not in the table, in the order they first came, 1 and the name and how often, or 0 past the last */
+int kon_rmPluginMissed(const kon_rmPlugins_t *plugins, int index, const char **name, int *count);
+
+#ifdef __cplusplus
+}
+#endif
+#endif