begin new main in C

main.c

@@ -0,0 +1,183 @@
+#include <string.h>
+#include "fs.h"
+#include <errno.h>
+#include <stdlib.h>
+#include "hashtable.h"
+
+#define _(x) x
+
+
+
+void free_filelist(struct filelist * list) {
+	if (list == NULL) {
+		return;
+	}
+
+	struct filelist * next = list->next;
+
+	while(list->next) {
+		next = list->next;
+		free(next->path);
+		free(next);
+
+		list->next = list->next->next;
+	}
+
+	free(list->path);
+	free(list);
+}
+
+int filelist_push(struct filelist * pos, const char * path) {
+	struct filelist * new = malloc(sizeof(struct filelist));
+	if (!new) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	new->next = pos->next;
+	new->path = strdup(path);
+
+	pos->next = new;
+	return 0;
+}
+
+int good(FILE * file) {
+	return !feof(file);
+}
+
+char fgetc_count(FILE *file, int * line, int * pos) {
+	char temp = fgetc(file);
+	if (temp == '\n') {
+		(*line)++;
+		*pos = 0;
+	} else {
+		(*pos)++;
+	}
+
+	return temp;
+}
+
+
+int add_char(char ** str, char c) {
+	if (str == NULL || *str == NULL) {
+		return 0;
+	}
+
+	int len = strlen(*str);
+
+	char *temp = realloc(*str, len + 1);
+	if (temp == NULL) {
+		errno = ENOMEM;
+		return -1;
+	}
+	*str = temp;
+
+	(*str)[len-1] = c;
+	(*str)[len] = 0;
+	return 0;
+}
+
+void eval_macro(struct filelist * last, FILE * file) {
+	char * name = NULL;
+	strhash_t hash = 0;
+
+	char current = 0;
+
+	// read macro name
+	while(good(file) && current != '\\') {
+
+	}
+
+	if (!good(file)) {
+		return;
+	}
+}
+
+void eval_file(struct filelist * last) {
+	// open file
+	FILE * file = fopen(last->path, "r");
+
+	if (file == NULL) {
+		fprintf(stderr, _("could not open file \"%s\":%s\n"), last->path, strerror(errno));
+		return;
+	}
+
+	printf("processing file: %s\n", last->path);
+
+	char current = 1;
+	while(good(file)) {
+		current = fgetc(file);
+
+		switch(current) {
+		case '%':
+			// comment, skip line
+			do {
+				current = fgetc(file);
+			} while(good(file) && current != '\n');
+
+			break;
+		case '\\':
+			// macro
+			eval_macro(last, file);
+			break;
+		default:
+			printf(_("unrecognized char! %c\n"), current);
+			break;
+		}
+	}
+	fclose(file);
+}
+
+#include <getopt.h>
+
+struct option long_opts[] = {
+	{"output", required_argument, NULL, 'o'},
+	{"target", required_argument, NULL, 't'},
+	{}, // terminator
+};
+
+
+void help(int argc, char ** args) {
+	printf("%s [OPTIONS] file1 file2...\n"
+			"--output\n"
+			"-o\tby default the program will create a depfile for every input\n"
+			"\tnaming it like the tex file with a .d extension. By giving the -o Option\n"
+			"\tthe output will instead be put in this file exculsivly\n"
+			"--target\n"
+			"-t\tOverride the target name\n", args[0]);
+}
+
+int main(int argc, char ** args) {
+	int long_index = 0;
+	int opt = 0;
+
+	const char *outfile, *target;
+
+	while((opt = getopt_long(argc, args, "o:t:", long_opts, &long_index)) != -1) {
+		switch(opt) {
+		case 'o':
+			outfile = optarg;
+			break;
+		case 't':
+			target = optarg;
+			break;
+		case '?':
+			help(argc, args);
+			return 0;
+		}
+	}
+
+	char * current_file = NULL;
+
+	// process all files
+	for(;optind < argc; ++optind) {
+		current_file = args[optind];
+
+		struct filelist list;
+		list.next = NULL;
+		list.path = current_file;
+
+		eval_file(&list);
+		free_filelist(list.next);
+	}
+}