apk: per applet options

src/add.c

@@ -13,7 +13,7 @@
 #include "apk_applet.h"
 #include "apk_database.h"
 
-static int add_main(int argc, char **argv)
+static int add_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
 	int i;

src/apk.c

@@ -11,6 +11,7 @@
 
 #include <stdio.h>
 #include <fcntl.h>
+#include <ctype.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
@@ -67,21 +68,11 @@ static struct apk_applet *find_applet(const char *name)
 	return NULL;
 }
 
-int main(int argc, char **argv)
+static struct apk_applet *deduce_applet(int argc, char **argv)
 {
-	static struct option generic_options[] = {
-		{"root", required_argument, NULL, 'Q' },
-		{"repository", required_argument, NULL, 'X' },
-		{"quiet", no_argument, NULL, 'q' },
-		{"progress", no_argument, NULL, 0x100 },
-		{0, 0, 0, 0},
-	};
-	struct apk_applet *applet = NULL;
+	struct apk_applet *a;
 	const char *prog;
-	int r;
-
-	umask(0);
-	apk_cwd_fd = open(".", O_RDONLY);
+	int i;
 
 	prog = strrchr(argv[0], '/');
 	if (prog == NULL)
@@ -90,10 +81,64 @@ int main(int argc, char **argv)
 		prog++;
 
 	if (strncmp(prog, "apk_", 4) == 0)
-		applet = find_applet(prog + 4);
+		return find_applet(prog + 4);
 
-	while ((r = getopt_long(argc, argv, "",
-				generic_options, NULL)) != -1) {
+	for (i = 1; i < argc; i++) {
+		if (argv[i][0] == '-')
+			continue;
+
+		a = find_applet(argv[i]);
+		if (a != NULL)
+			return a;
+	}
+
+	return NULL;
+}
+
+#define NUM_GENERIC_OPTS 4
+static struct option generic_options[32] = {
+	{ "root",	required_argument, 	NULL, 'Q' },
+	{ "repository",	required_argument, 	NULL, 'X' },
+	{ "quiet",	no_argument,		NULL, 'q' },
+	{ "progress",	no_argument,		NULL, 0x100 },
+};
+
+int main(int argc, char **argv)
+{
+	struct apk_applet *applet;
+	char short_options[256], *sopt;
+	struct option *opt;
+	int r, optindex;
+	void *ctx = NULL;
+
+	umask(0);
+	apk_cwd_fd = open(".", O_RDONLY);
+	apk_root = getenv("ROOT");
+
+	applet = deduce_applet(argc, argv);
+	if (applet == NULL)
+		return usage();
+
+	if (applet->num_options && applet->options) {
+		memcpy(&generic_options[NUM_GENERIC_OPTS],
+		       applet->options,
+		       applet->num_options * sizeof(struct option));
+	}
+	for (opt = &generic_options[0], sopt = short_options;
+	     opt->name != NULL; opt++) {
+		if (opt->flag == NULL && isalnum(opt->val)) {
+			*(sopt++) = opt->val;
+			if (opt->has_arg != no_argument)
+				*(sopt++) = ':';
+		}
+	}
+
+	if (applet->context_size != 0)
+		ctx = calloc(1, applet->context_size);
+
+	optindex = 0;
+	while ((r = getopt_long(argc, argv, short_options,
+				generic_options, &optindex)) != -1) {
 		switch (r) {
 		case 'Q':
 			apk_root = optarg;
@@ -108,27 +153,24 @@ int main(int argc, char **argv)
 			apk_progress = 1;
 			break;
 		default:
-			return usage();
+			if (applet->parse == NULL)
+				return usage();
+			if (applet->parse(ctx, r, optindex - NUM_GENERIC_OPTS,
+					  optarg) != 0)
+				return usage();
+			break;
 		}
 	}
 
-	argc -= optind;
-	argv += optind;
-
-	if (apk_root == NULL)
-		apk_root = getenv("ROOT");
 	if (apk_root == NULL)
 		apk_root = "/";
 
-	if (applet == NULL) {
-		if (argc > 0)
-			applet = find_applet(argv[0]);
-		if (applet == NULL)
-			return usage();
-
+	argc -= optind;
+	argv += optind;
+	if (argc >= 1 && strcmp(argv[0], applet->name) == 0) {
 		argc--;
 		argv++;
 	}
 
-	return applet->main(argc, argv);
+	return applet->main(ctx, argc, argv);
 }

src/apk_applet.h

@@ -12,13 +12,21 @@
 #ifndef APK_APPLET_H
 #define APK_APPLET_H
 
+#include <getopt.h>
+
 extern const char *apk_root;
 extern const char *apk_repository;
 
 struct apk_applet {
 	const char *name;
-        const char *usage;
-	int (*main)(int argc, char **argv);
+	const char *usage;
+
+	int context_size;
+	int num_options;
+	struct option *options;
+
+	int (*parse)(void *ctx, int optch, int optindex, const char *optarg);
+	int (*main)(void *ctx, int argc, char **argv);
 };
 
 extern struct apk_applet *__start_apkapplets, *__stop_apkapplets;

src/apk_database.h

@@ -93,6 +93,7 @@ typedef union apk_database_or_void {
 } apk_database_t __attribute__ ((__transparent_union__));
 
 struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name);
+struct apk_name *apk_db_query_name(struct apk_database *db, apk_blob_t name);
 void apk_name_free(struct apk_name *pkgname);
 
 int apk_db_create(const char *root);

src/create.c

@@ -13,7 +13,7 @@
 #include "apk_applet.h"
 #include "apk_database.h"
 
-static int create_main(int argc, char **argv)
+static int create_main(void *ctx, int argc, char **argv)
 {
 	if (strcmp(apk_root, "/") == 0) {
 		apk_error("Will not recreate system root.");

src/database.c

@@ -87,11 +87,16 @@ static const struct apk_hash_ops dir_hash_ops = {
 	.delete_item = (apk_hash_delete_f) free,
 };
 
+struct apk_name *apk_db_query_name(struct apk_database *db, apk_blob_t name)
+{
+	return (struct apk_name *) apk_hash_get(&db->available.names, name);
+}
+
 struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
 {
 	struct apk_name *pn;
 
-	pn = (struct apk_name *) apk_hash_get(&db->available.names, name);
+	pn = apk_db_query_name(db, name);
 	if (pn != NULL)
 		return pn;
 

src/del.c

@@ -13,7 +13,7 @@
 #include "apk_applet.h"
 #include "apk_database.h"
 
-static int del_main(int argc, char **argv)
+static int del_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
 	int i, j;

src/index.c

@@ -39,7 +39,7 @@ static int warn_if_no_providers(apk_hash_item item, void *ctx)
 	return 0;
 }
 
-static int index_main(int argc, char **argv)
+static int index_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
 	struct counts counts = {0,0};

src/info.c

@@ -12,30 +12,91 @@
 #include <stdio.h>
 #include "apk_defines.h"
 #include "apk_applet.h"
+#include "apk_package.h"
 #include "apk_database.h"
+#include "apk_state.h"
 
-static int info_main(int argc, char **argv)
+struct info_ctx {
+	int (*action)(struct apk_database *db, int argc, char **argv);
+};
+
+static int info_list(struct apk_database *db, int argc, char **argv)
 {
-	struct apk_database db;
 	struct apk_package *pkg;
 
+	list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
+		printf("%s", pkg->name->name);
+		if (!apk_quiet)
+			printf("-%s - %s", pkg->version, pkg->description);
+		printf("\n");
+	}
+	return 0;
+}
+
+static int info_exists(struct apk_database *db, int argc, char **argv)
+{
+	struct apk_name *name;
+	int i, j;
+
+	for (i = 0; i < argc; i++) {
+		name = apk_db_query_name(db, APK_BLOB_STR(argv[i]));
+		if (name == NULL)
+			return 1;
+
+		for (j = 0; j < name->pkgs->num; j++) {
+			if (apk_pkg_get_state(name->pkgs->item[j]) == APK_STATE_INSTALL)
+				break;
+		}
+		if (j >= name->pkgs->num)
+			return 2;
+	}
+
+	return 0;
+}
+
+static int info_parse(void *ctx, int optch, int optindex, const char *optarg)
+{
+	struct info_ctx *ictx = (struct info_ctx *) ctx;
+
+	switch (optch) {
+	case 'e':
+		ictx->action = info_exists;
+		break;
+	default:
+		return -1;
+	}
+	return 0;
+}
+
+static int info_main(void *ctx, int argc, char **argv)
+{
+	struct info_ctx *ictx = (struct info_ctx *) ctx;
+	struct apk_database db;
+	int r;
+
 	if (apk_db_open(&db, apk_root) < 0)
 		return -1;
 
-	list_for_each_entry(pkg, &db.installed.packages, installed_pkgs_list) {
-		printf("%s", pkg->name->name);
-		if (!apk_quiet) 
-			printf(" %s", pkg->version);
-		printf("\n");
-	}
+	if (ictx->action != NULL)
+		r = ictx->action(&db, argc, argv);
+	else
+		r = info_list(&db, argc, argv);
 
 	apk_db_close(&db);
-	return 0;
+	return r;
 }
 
+static struct option info_options[] = {
+	{ "installed",	no_argument,		NULL, 'e' },
+};
+
 static struct apk_applet apk_info = {
 	.name = "info",
 	.usage = "",
+	.context_size = sizeof(struct info_ctx),
+	.num_options = ARRAY_SIZE(info_options),
+	.options = info_options,
+	.parse = info_parse,
 	.main = info_main,
 };
 

src/ver.c

@@ -29,7 +29,7 @@ static int res2char(int res)
 	}
 }
 
-static int ver_main(int argc, char **argv)
+static int ver_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
 	struct apk_name *name;