Commit 0e465f979bd946d7476c86cfaa912d0737f54682
2010-08-12T18:47:32
Add auxiliary method git__hexdump New function in util.c to do a dump of a buffer's contents in hexadecimal to stdout. Signed-off-by: Vicent Marti <tanoku@gmail.com>
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diff --git a/src/util.c b/src/util.c
index 84a5237..eda4a4e 100644
--- a/src/util.c
+++ b/src/util.c
@@ -121,3 +121,47 @@ int git__basename(char *base, size_t n, char *path)
return len;
}
+void git__hexdump(const char *buffer, size_t len)
+{
+ static const size_t LINE_WIDTH = 16;
+
+ size_t line_count, last_line, i, j;
+ const char *line;
+
+ line_count = (len / LINE_WIDTH);
+ last_line = (len % LINE_WIDTH);
+
+ for (i = 0; i < line_count; ++i) {
+ line = buffer + (i * LINE_WIDTH);
+ for (j = 0; j < LINE_WIDTH; ++j, ++line)
+ printf("%02X ", (unsigned char)*line & 0xFF);
+
+ printf("| ");
+
+ line = buffer + (i * LINE_WIDTH);
+ for (j = 0; j < LINE_WIDTH; ++j, ++line)
+ printf("%c", (*line >= 32 && *line <= 126) ? *line : '.');
+
+ printf("\n");
+ }
+
+ if (last_line > 0) {
+
+ line = buffer + (line_count * LINE_WIDTH);
+ for (j = 0; j < last_line; ++j, ++line)
+ printf("%02X ", (unsigned char)*line & 0xFF);
+
+ for (j = 0; j < (LINE_WIDTH - last_line); ++j)
+ printf(" ");
+
+ printf("| ");
+
+ line = buffer + (line_count * LINE_WIDTH);
+ for (j = 0; j < last_line; ++j, ++line)
+ printf("%c", (*line >= 32 && *line <= 126) ? *line : '.');
+
+ printf("\n");
+ }
+
+ printf("\n");
+}
diff --git a/src/util.h b/src/util.h
index 71d0a2d..5f64725 100644
--- a/src/util.h
+++ b/src/util.h
@@ -34,6 +34,8 @@ extern int git__suffixcmp(const char *str, const char *suffix);
extern int git__dirname(char *dir, size_t n, char *path);
extern int git__basename(char *base, size_t n, char *path);
+extern void git__hexdump(const char *buffer, size_t n);
+
/** @return true if p fits into the range of a size_t */
GIT_INLINE(int) git__is_sizet(off_t p)
{