From 6613bd07075ef0c0d475f55c530500ad4c4d180e Mon Sep 17 00:00:00 2001
From: Alessandro Mauri <alemauri001@gmail.com>
Date: Sat, 25 Jul 2020 17:51:00 +0200
Subject: [PATCH] modified parser to suit new config format

---
 tests/parse.c | 84 ++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 57 insertions(+), 27 deletions(-)

diff --git a/tests/parse.c b/tests/parse.c
index f4db9a1..fad9767 100644
--- a/tests/parse.c
+++ b/tests/parse.c
@@ -1,3 +1,6 @@
+#define _POSIX_C_SOURCE 200809L
+#define _DEFAULT_SOURCE
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -6,6 +9,8 @@
 #define ANSI_COLOR_RED     "\x1b[31m"
 #define ANSI_COLOR_RESET   "\x1b[0m"
 
+#define parse_failure(str, line) {fprintf(stderr, "Error in config file at line %d: " str "\n", line); exit(EXIT_FAILURE);}
+
 int main(int argc, char const *argv[])
 {
 	if (argc < 2)
@@ -14,41 +19,66 @@ int main(int argc, char const *argv[])
 	fd = fopen(argv[1], "r");
 	if (!fd)
 		return -1;
-	for (;;) {
-		char *line = NULL;
+	for (int linenum = 1;; linenum++) {
+		int fuzzy = 0, tmp;
+		char *line = NULL, *keys = NULL, *command = NULL;
 		size_t linelen = 0;
+
 		if (getline(&line, &linelen, fd) == -1)
 			break;
 		if (linelen < 2)
 			continue;
 
-		printf(ANSI_COLOR_RED "%s\n" ANSI_COLOR_RESET, line);
-		/* remove white spaces */
-		int inquotes = 0;
-		int inapos = 0;
-		for (size_t i = 0; i < linelen; i++) {
-			if (line[i] == '"' && !inapos)
-				inquotes = !inquotes;
-			if (line[i] == '\'' && !inquotes)
-				inapos = !inapos;
-
-			if (isblank(line[i]) && !(inquotes || inapos)) {
-				memmove(&line[i], &line[i + 1], linelen - i);
-				i -= i ? 1 : 0;
+		printf(ANSI_COLOR_RED "Original line:\n%s\n" ANSI_COLOR_RESET, line);
+
+		// Remove leading spaces
+		while (isspace(line[0]) && linelen > 1)
+			memmove(line, &line[1], --linelen);
+
+		// Skip comments and blank lines
+		if (line[0] == '#' || !line[0]) {
+			free(line);
+			continue;
+		}
+
+		printf("Valid line:\n%s\n", line);
+
+		// TODO: multiline commands, ending with "\\n"
+		// TODO: better error checks in order to remove unnecessary
+		// memmoves (line has to begin with cmment or "*-"), etc.
+
+		if (line[0] == '*')
+			fuzzy = 1;
+		memmove(line, &line[1], --linelen);
+		// Remove leading spaces
+		while (isspace(line[0]) && linelen > 1)
+			memmove(line, &line[1], --linelen);
+
+		keys = strtok(line, ":");
+		command = strtok(NULL, ":");
+		if (!command || !keys)
+			parse_failure("No command or keys specified", linenum);
+
+		// Remove whitespaces in keys
+		tmp = strlen(keys);
+		for (int i = 0; i < tmp; i++) {
+			if (isspace(keys[i])) {
+				memmove(&line[i], &line[i + 1], --tmp);
 			}
 		}
-		if (line[0] == '#')
-			continue;
-		printf("%s\n", line);
-
-		char *token = NULL;
-		token = strtok(line, "=");
-		if (token)
-			printf("%s\n", token);
-		token = strtok(NULL, "=");
-		if (token)
-			printf("%s\n", token);
-		free(line);
+
+		// Remove leading spaces in command
+		tmp = strlen(command);
+		while (isspace(command[0]) && tmp > 1)
+			memmove(command, &command[1], --tmp);
+
+		int x = 1;
+		char *k = strtok(keys, ",");
+		do {
+			printf("Key %d: %s\n", x++, k);
+		} while ((k = strtok(NULL, ",")));
+
+		printf("Command: %s\n", command);
 	}
 	return 0;
 }