1 files changed, 65 insertions, 26 deletions

diff --git a/sway/stringop.c b/sway/stringop.c
index 00cc32b8..c39e2c34 100644
--- a/sway/stringop.c
+++ b/sway/stringop.c
@@ -1,38 +1,38 @@
+#include "stringop.h"
 #include <stdlib.h>
 #include <stdio.h>
-#include <strings.h>
-#include <ctype.h>
-#include "stringop.h"
 #include "string.h"
 #include "list.h"
+#include <strings.h>
+#include <log.h>
 
 /* Note: This returns 8 characters for trimmed_start per tab character. */
-void strip_whitespace(char *str) {
-	int shift = 0;
-	int bpair = 1;
-	int in_str = 0, in_ch = 0;
-	while (*str) {
-		str[-shift] = str[0];
-		if (*str == '"' && !in_ch) {
-			in_str = !in_str;
-		} else if (*str == '\'' && !in_str) {
-			in_ch = !in_ch;
-		} else if (!in_ch && !in_str) {
-			if (isblank(*str)) {
-				if (bpair) {
-					++shift;
-				}
-				bpair=1;
-			} else {
-				bpair = 0;
-			}
+char *strip_whitespace(char *_str, int *trimmed_start) {
+	*trimmed_start = 0;
+	if (*_str == '\0')
+		return _str;
+	char *strold = _str;
+	while (*_str == ' ' || *_str == '\t') {
+		if (*_str == '\t') {
+			*trimmed_start += 8;
+		} else {
+			*trimmed_start += 1;
 		}
-		++str;
+		_str++;
 	}
-	str[-shift-bpair] = 0;
+	char *str = malloc(strlen(_str) + 1);
+	strcpy(str, _str);
+	free(strold);
+	int i;
+	for (i = 0; str[i] != '\0'; ++i);
+	do {
+		i--;
+	} while (i >= 0 && (str[i] == ' ' || str[i] == '\t'));
+	str[i + 1] = '\0';
+	return str;
 }
 
-void strip_comments(char *str) {
+char *strip_comments(char *str) {
 	int in_string = 0, in_character = 0;
 	int i = 0;
 	while (str[i] != '\0') {
@@ -41,13 +41,14 @@ void strip_comments(char *str) {
 		} else if (str[i] == '\'' && !in_string) {
 			in_character = !in_character;
 		} else if (!in_character && !in_string) {
-			if (str[i] == '#') {
+			if (str[i] == '#' && i == 0) {
 				str[i] = '\0';
 				break;
 			}
 		}
 		++i;
 	}
+	return str;
 }
 
 list_t *split_string(const char *str, const char *delims) {
@@ -197,3 +198,41 @@ char *join_args(char **argv, int argc) {
 	res[len - 1] = '\0';
 	return res;
 }
+
+/*
+ * Join a list of strings, adding separator in between. Separator can be NULL.
+ */
+char *join_list(list_t *list, char *separator) {
+	if (!sway_assert(list != NULL, "list != NULL") || list->length == 0) {
+		return NULL;
+	}
+
+	size_t len = 1; // NULL terminator
+	size_t sep_len = 0;
+	if (separator != NULL) {
+		sep_len = strlen(separator);
+		len += (list->length - 1) * sep_len;
+	}
+
+	for (int i = 0; i < list->length; i++) {
+		len += strlen(list->items[i]);
+	}
+
+	char *res = malloc(len);
+
+	char *p = res + strlen(list->items[0]);
+	strcpy(res, list->items[0]);
+
+	for (int i = 1; i < list->length; i++) {
+		if (sep_len) {
+			memcpy(p, separator, sep_len);
+			p += sep_len;
+		}
+		strcpy(p, list->items[i]);
+		p += strlen(list->items[i]);
+	}
+
+	*p = '\0';
+
+	return res;
+}