Commit thus farHEADmaster

2 files changed, 148 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..b82f86f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+wasureta:
+	gcc -Wpedantic -Werror -Warith-conversion -Wconversion -std=c99 main.c -o wasureta
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..bdd3656
--- /dev/null
+++ b/main.c
@@ -0,0 +1,146 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+#define COUNT_DECK_PARAMS 32
+#define PROGRAM_NAME "wasureta"
+
+/* wasureta: Anki on the terminal.
+ * Anki decks (.apkg) are found in:
+ * - $XDG_DATA_HOME/wasureta, or $HOME/.local/share/wasureta
+ * - passed in via the -d argument.
+ *
+ * When you run `wasureta`, the program will check for any decks, if any
+ * revision needs to be done. If so, it will give a choice of deck to select.
+ * On selecting the deck, the practice will begin.
+ * This only displays the text, not audio or images.
+ */
+
+/* ******************************** Types ********************************** */
+enum error_t {
+	err_copyfailed = 0,
+};
+
+/* **************************** Function Decls ***************************** */
+void die(const char*, ...);
+void usage(void);
+void version(void);
+int run(void);
+enum error_t copy_decks(const char* decks[], size_t decks_len);
+
+/* **************************** Function Impls ***************************** */
+void 
+die(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+
+	if (fmt[0] && fmt[strlen(fmt) - 1] == ':') {
+		fputc(' ', stderr);
+		perror(NULL);
+	} else {
+		fputc('\n', stderr);
+	}
+
+	exit(1);
+}
+
+void 
+usage(void)
+{
+	printf(
+		PROGRAM_NAME ": Anki on the terminal.\n"
+		"\tSource:  https://gabbott.dev/git/" PROGRAM_NAME "\n"
+		"\tLicense: BSD 3-Clause\n"
+		"\n"
+		"Usage:\n"
+		"\t" PROGRAM_NAME " FLAGS\n"
+		"\t-d DECK   Copy a deck to $XDG_DATA_HOME/" PROGRAM_NAME " for use.\n"
+		"\t-h        Display this help message.\n"
+		"\t-v        Display version information.\n"
+	);
+}
+
+void 
+version(void) 
+{
+	printf(PROGRAM_NAME ": ver 0.1.0\n");
+}
+
+enum error_t 
+copy_decks(const char* decks[], size_t decks_len) 
+{
+	const char xdgpath[] = "/.local/share";
+	const char dir[] = "/" PROGRAM_NAME;
+	const char *xdg = getenv("XDG_DATA_HOME");
+	const char *home = getenv("HOME");
+	if (!xdg && !home) {
+		die("Both HOME AND XDG_DATA_HOME envvars unset - this is bad!");
+	}
+	
+	char* target;
+	if (xdg) {
+		target = malloc(strlen(xdg) + strlen(dir));
+		strcpy(target, xdg);
+		strcat(target, dir);
+	} else {
+		target = malloc(strlen(home) + strlen(xdgpath));
+		strcpy(target, home);
+		strcat(target, xdgpath);
+	}
+
+	printf("target: %s\n", target);
+
+	for (size_t i = 0; i < decks_len; ++i) {
+		printf("decks: %s", decks[i]);
+	}
+
+/* cleanup:*/	free(target);
+
+	return err_copyfailed;
+}
+
+int 
+run(void)
+{
+	return 0;
+	
+}
+
+int 
+main(int argc, char* argv[])
+{
+	const char* decks[COUNT_DECK_PARAMS] = {0};
+	size_t decks_index = 0; // used for setting decks values
+	
+	for (int i = 0; i < argc; ++i) {
+		if (argv[i][0] == '-') {
+			switch (argv[i][1]) {
+				case 'h':
+					usage();
+					exit(0);
+				case 'v':
+					version();
+					exit(0);
+				case 'd':
+					decks[decks_index++] = argv[++i];
+					break;
+				default:
+					die("Unsupported flag -%c; run " PROGRAM_NAME " -h for usage information.", argv[i][1]);
+			}
+		}
+	}
+
+	// If we have any decks, copy them into the appropriate location.
+	if (decks_index) {
+		enum error_t err = copy_decks(decks, decks_index);
+		die("Failed to copy for -d flag. Error: %d", (int)err);
+	} else {
+		return run();
+	}
+}
+