start rewrite in C

skratch.c

@@ -0,0 +1,144 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+struct Flags
+{
+	int use_v;
+	int use_s;
+	char suffix[255];
+	char skratch_path[4096];
+	char file_path[4096];
+	char filename[255];
+	char editor[255];
+};
+
+
+
+int handle_args(int argc, char *argv[])
+{
+	if (argc == 1)
+	{
+		//launch ed
+		printf("NO ARGS!");
+		return 0;
+	}
+	for (int i = 1; i < argc; i++)
+	{
+		printf("arg %d: %s\n", i, argv[i]);
+	}
+	return 0;
+}
+
+
+void set_editor(struct Flags *f)
+{
+	char *ed;
+	if (f->use_v) 
+	        ed = getenv("VISUAL");
+	else 
+		ed = getenv("EDITOR");
+	if (ed != NULL)
+		strcpy(f->editor, ed);
+	else
+		strcpy(f->editor, "vi");
+}
+
+int make_skratch_file(struct Flags *f)
+{
+	char fp[4096];
+	int fd = 0;
+	snprintf(fp, sizeof(fp), "%s/%s", f->skratch_path, f->filename);
+	if (!strcmp(f->filename, "skratchXXXXXX"))
+	{
+		fd = mkstemp(fp);
+		close(fd);
+	}
+	if (fd == -1)
+	{
+		printf("ERROR: Couldn't create skratch file!");
+		return 3;
+	}
+	strcpy(f->file_path, fp);
+	return 0;
+}
+
+int make_skratch_path(struct Flags *f)
+{
+	char sp[4096];
+	char *home_path = getenv("HOME");
+	if (home_path == NULL)
+	{
+		printf("ERROR: No HOME variable set!");
+		return 1;
+	}
+	snprintf(sp, sizeof(sp), "%s/.skratch", home_path);
+	int result = mkdir(sp, 0755);
+	if (result < 0 && errno != EEXIST)
+	{
+		printf("ERROR: Couldn't create: %s\n", sp);
+		return 2;
+	}
+	strcpy(f->skratch_path, sp);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	struct Flags f = {.use_v = 0, .filename="skratchXXXXXX"};
+	make_skratch_path(&f);
+	
+	if (argc == 1)
+	{
+		set_editor(&f);
+		make_skratch_file(&f);
+	}
+	char arg;
+	for (int i = 1; i < argc; i++)
+	{
+		if (argv[i][0] == '-' && strlen(argv[i]) == 2)
+		{
+			arg = argv[i][1];
+		}
+		else
+		{
+			//set filename
+			if (!strcmp(f.filename,"skratchXXXXXX"))
+			{
+				strcpy(f.filename, argv[i]);
+				continue;
+			}
+			else
+			{
+				printf("INVALID ARGUMENT: %s\n", argv[i]);
+				return 4;
+			}
+		}
+		switch (arg)
+		{
+			case 'c':
+				printf("CLEAR!\n");
+				break;
+
+			case 'l':
+				printf("LIST!\n");
+				break;
+			case 'v':
+				printf("VISUAL!\n");
+				break;
+			default:
+				printf("Unknown Arg %c",arg);
+		}
+	}
+	printf("Filename: %s\n",f.filename);
+	make_skratch_file(&f);
+	set_editor(&f);
+	char *args[2];
+	args[0] = f.editor;
+	args[1] = f.file_path;
+	printf("%s %s\n", f.editor, args[1]);
+	execvp(f.editor,args);
+}