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Add auxiliary method git__hexdump

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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>
This commit is contained in:
Vicent Marti 2010-08-12 18:47:32 +02:00
parent 003c269094
commit 0e465f979b
2 changed files with 46 additions and 0 deletions
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44
src/util.c
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@ -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");
}

2
src/util.h
View File

@ -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)
{