1 files changed, 109 insertions, 0 deletions
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..05e85af
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,109 @@
+// Copyright (c) 2024, Marvin Borner <dev@marvinborner.de>
+// SPDX-License-Identifier: MIT
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <target.h>
+#include <term.h>
+#include <log.h>
+#include <parse.h>
+
+// automatically generated using gengetopt
+#include "cmdline.h"
+
+#define BUF_SIZE 1024
+static char *read_stdin(void)
+{
+	debug("reading from stdin\n");
+	char buffer[BUF_SIZE];
+	size_t size = 1;
+	char *string = malloc(sizeof(char) * BUF_SIZE);
+	if (!string)
+		fatal("out of memory!\n");
+	string[0] = '\0';
+	while (fgets(buffer, BUF_SIZE, stdin)) {
+		char *old = string;
+		size += strlen(buffer);
+		string = realloc(string, size);
+		if (!string) {
+			free(old);
+			return 0;
+		}
+		strcat(string, buffer);
+	}
+
+	if (ferror(stdin)) {
+		free(string);
+		fatal("can't read from stdin\n");
+	}
+	return string;
+}
+
+static char *read_file(FILE *f)
+{
+	fseek(f, 0, SEEK_END);
+	long fsize = ftell(f);
+	fseek(f, 0, SEEK_SET);
+
+	char *string = malloc(fsize + 1);
+	if (!string)
+		fatal("out of memory!\n");
+	int ret = fread(string, fsize, 1, f);
+
+	if (ret != 1) {
+		free(string);
+		fatal("can't read file: %s\n", strerror(errno));
+	}
+
+	string[fsize] = 0;
+	return string;
+}
+
+static char *read_path(const char *path)
+{
+	debug("reading from %s\n", path);
+	FILE *f = fopen(path, "rb");
+	if (!f)
+		fatal("can't open file %s: %s\n", path, strerror(errno));
+	char *string = read_file(f);
+	fclose(f);
+	return string;
+}
+
+int main(int argc, char **argv)
+{
+	struct gengetopt_args_info args;
+	if (cmdline_parser(argc, argv, &args))
+		exit(1);
+
+	debug_enable(args.verbose_flag);
+
+	char *input;
+	if (args.input_arg[0] == '-') {
+		input = read_stdin();
+	} else {
+		input = read_path(args.input_arg);
+	}
+
+	if (!input)
+		return 1;
+
+	if (args.target_arg) {
+		struct bloc_parsed *bloc = parse_bloc(input);
+
+		FILE *file =
+			args.output_arg ? fopen(args.output_arg, "wb") : stdout;
+		exec_target(args.target_arg, bloc, file);
+		fclose(file);
+
+		free(input);
+		free_bloc(bloc);
+		return 0;
+	}
+
+	fatal("invalid options: use --help for information\n");
+	return 1;
+}