[tracker/parser-unicode-libs-review] utils: new tracker_strhex method to get the hex view of a given string
- From: Aleksander Morgado <aleksm src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [tracker/parser-unicode-libs-review] utils: new tracker_strhex method to get the hex view of a given string
- Date: Fri, 14 May 2010 17:21:27 +0000 (UTC)
commit 9ec224b2c0c795e5fd5ebefd364c4a78a3e1435c
Author: Aleksander Morgado <aleksander lanedo com>
Date: Fri May 14 18:37:29 2010 +0200
utils: new tracker_strhex method to get the hex view of a given string
src/libtracker-common/tracker-utils.c | 52 +++++++++++++++++++++++++++++++++
src/libtracker-common/tracker-utils.h | 19 +++++++-----
2 files changed, 63 insertions(+), 8 deletions(-)
---
diff --git a/src/libtracker-common/tracker-utils.c b/src/libtracker-common/tracker-utils.c
index c2154f1..7da50e5 100644
--- a/src/libtracker-common/tracker-utils.c
+++ b/src/libtracker-common/tracker-utils.c
@@ -20,6 +20,7 @@
#include "config.h"
+#include <stdio.h>
#include <string.h>
#include <locale.h>
@@ -151,3 +152,54 @@ tracker_seconds_to_string (gdouble seconds_elapsed,
+/**
+ * tracker_strhex:
+ * @data: The input array of bytes
+ * @size: Number of bytes in the input array
+ * @delimiter: Character to use as separator between each printed byte
+ *
+ * Returns the contents of @data as a printable string in hexadecimal
+ * representation.
+ *
+ * Based on GNU PDF's pdf_text_test_get_hex()
+ *
+ * Returns: A newly allocated string which should be disposed with g_free()
+ **/
+gchar *
+tracker_strhex (const guint8 *data,
+ gsize size,
+ gchar delimiter)
+{
+ /* */
+ gsize i;
+ gsize j;
+ gsize new_str_length;
+ gchar *new_str;
+ gchar new_hex_char [3];
+
+ /* Get new string length. If input string has N bytes, we need:
+ * - 1 byte for last NUL char
+ * - 2N bytes for hexadecimal char representation of each byte...
+ * - N-1 bytes for the separator ':'
+ * So... a total of (1+2N+N-1) = 3N bytes are needed... */
+ new_str_length = 3 * size;
+
+ /* Allocate memory for new array and initialize contents to NUL */
+ new_str = g_malloc0 (new_str_length);
+
+ /* Print hexadecimal representation of each byte... */
+ for(i=0, j=0; i<size; i++, j+=3) {
+ memset (new_hex_char, 0, 3);
+ /* Print character in helper array... */
+ sprintf (new_hex_char, "%02X", data[i]);
+ /* Copy to output string... */
+ memcpy (&new_str[j],&new_hex_char[0],2);
+ /* And if needed, add separator */
+ if(i != (size-1) ) {
+ new_str[j+2] = delimiter;
+ }
+ }
+
+ /* Set output string */
+ return new_str;
+}
diff --git a/src/libtracker-common/tracker-utils.h b/src/libtracker-common/tracker-utils.h
index 7af38eb..2112100 100644
--- a/src/libtracker-common/tracker-utils.h
+++ b/src/libtracker-common/tracker-utils.h
@@ -29,14 +29,17 @@ G_BEGIN_DECLS
#error "only <libtracker-common/tracker-common.h> must be included directly."
#endif
-gboolean tracker_is_empty_string (const char *str);
-gboolean tracker_is_blank_string (const char *str);
-gchar * tracker_seconds_estimate_to_string (gdouble seconds_elapsed,
- gboolean short_string,
- guint items_done,
- guint items_remaining);
-gchar * tracker_seconds_to_string (gdouble seconds_elapsed,
- gboolean short_string);
+gboolean tracker_is_empty_string (const char *str);
+gboolean tracker_is_blank_string (const char *str);
+gchar * tracker_seconds_estimate_to_string (gdouble seconds_elapsed,
+ gboolean short_string,
+ guint items_done,
+ guint items_remaining);
+gchar * tracker_seconds_to_string (gdouble seconds_elapsed,
+ gboolean short_string);
+gchar * tracker_strhex (const guint8 *data,
+ gsize size,
+ gchar delimiter);
G_END_DECLS
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