From 32d57ff271e5bf68d6acb76af97c35898f7659b4 Mon Sep 17 00:00:00 2001
From: fduncanh <fduncanh@gmail.com>
Date: Sun, 12 Dec 2021 03:31:26 -0500
Subject: [PATCH] add two new functions to utils.c for debug text processing

---
 lib/utils.c | 34 +++++++++++++++++++++++++++++++++-
 lib/utils.h |  4 +++-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/lib/utils.c b/lib/utils.c
index 7cdda94..0ba0723 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -178,4 +178,36 @@ char *utils_parse_hex(const char *str, int str_len, int *data_len) {
 
     *data_len = (str_len / 2);
     return data;
-}
\ No newline at end of file
+}
+
+char *utils_data_to_string(const unsigned char *data, int datalen, int chars_per_line) {
+    int len = 3*datalen + ((datalen-1)/chars_per_line ) + 1;
+    char *str = (char *) calloc(len + 1, sizeof(char));
+    assert(str);
+    char *p = str;
+    for (int i = 0; i < datalen; i++) {
+        if (i > 0 && i % chars_per_line == 0) {
+            sprintf(p,"\n");
+            p++;
+        }
+        sprintf(p,"%2.2x ", (unsigned int) data[i]);
+        p += 3;
+    }
+    sprintf(p,"\n");
+    p++;
+    assert(p == &(str[len]));
+    return str;
+}
+
+char *utils_data_to_text(const char *data, int datalen) {
+    char *ptr = (char *) calloc(datalen + 1, sizeof(char));
+    assert(ptr);
+    strncpy(ptr, data, datalen);
+    char *p = ptr;
+    while (p) {
+        p  = strchr(p, '\r');  /* replace occurences of '\r' by ' ' */
+	if (p) *p = ' ';
+    }
+    return ptr;
+}
+  
diff --git a/lib/utils.h b/lib/utils.h
index 58ded9e..c9b62e9 100644
--- a/lib/utils.h
+++ b/lib/utils.h
@@ -20,4 +20,6 @@ int utils_read_file(char **dst, const char *pemstr);
 int utils_hwaddr_raop(char *str, int strlen, const char *hwaddr, int hwaddrlen);
 int utils_hwaddr_airplay(char *str, int strlen, const char *hwaddr, int hwaddrlen);
 char *utils_parse_hex(const char *str, int str_len, int *data_len);
-#endif
\ No newline at end of file
+char *utils_data_to_string(const unsigned char *data, int datalen, int chars_per_line);
+char *utils_data_to_text(const char *data, int datalen);
+#endif