diff options
Diffstat (limited to 'lib/libarchive/archive_string_sprintf.c')
-rw-r--r-- | lib/libarchive/archive_string_sprintf.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/lib/libarchive/archive_string_sprintf.c b/lib/libarchive/archive_string_sprintf.c index 44b116e..9199106 100644 --- a/lib/libarchive/archive_string_sprintf.c +++ b/lib/libarchive/archive_string_sprintf.c @@ -32,7 +32,7 @@ __FBSDID("$FreeBSD$"); * implementing this function in terms of vsnprintf() requires * two calls (one to determine the size, another to format the * result), which in turn requires duplicating the argument list - * using va_copy, which isn't yet universally available. + * using va_copy, which isn't yet universally available. <sigh> * * So, I've implemented a bare minimum of printf()-like capability * here. This is only used to format error messages, so doesn't @@ -44,6 +44,30 @@ __FBSDID("$FreeBSD$"); #include "archive_string.h" #include "archive_private.h" +/* + * Utility functions to format signed/unsigned integers and append + * them to an archive_string. + */ +static void +append_uint(struct archive_string *as, uintmax_t d, unsigned base) +{ + static const char *digits = "0123456789abcdef"; + if (d >= base) + append_uint(as, d/base, base); + archive_strappend_char(as, digits[d % base]); +} + +static void +append_int(struct archive_string *as, intmax_t d, unsigned base) +{ + if (d < 0) { + archive_strappend_char(as, '-'); + d = -d; + } + append_uint(as, d, base); +} + + void __archive_string_sprintf(struct archive_string *as, const char *fmt, ...) { @@ -75,7 +99,6 @@ __archive_string_vsprintf(struct archive_string *as, const char *fmt, return; } - long_flag = '\0'; for (p = fmt; *p != '\0'; p++) { const char *saved_p = p; @@ -86,6 +109,7 @@ __archive_string_vsprintf(struct archive_string *as, const char *fmt, p++; + long_flag = '\0'; switch(*p) { case 'j': long_flag = 'j'; @@ -111,7 +135,7 @@ __archive_string_vsprintf(struct archive_string *as, const char *fmt, case 'l': s = va_arg(ap, long); break; default: s = va_arg(ap, int); break; } - archive_strappend_int(as, s, 10); + append_int(as, s, 10); break; case 's': p2 = va_arg(ap, char *); @@ -126,9 +150,9 @@ __archive_string_vsprintf(struct archive_string *as, const char *fmt, } /* Format it in the correct base. */ switch (*p) { - case 'o': archive_strappend_int(as, u, 8); break; - case 'u': archive_strappend_int(as, u, 10); break; - default: archive_strappend_int(as, u, 16); break; + case 'o': append_uint(as, u, 8); break; + case 'u': append_uint(as, u, 10); break; + default: append_uint(as, u, 16); break; } break; default: |