[PATCH] use xmemdupz() to allocate copies of strings given by start and length
- From
René Scharfe <l.s.r@web.de>
- Date
- Jul 19, 2014, 15:35 UTC
- Message-ID
- <53CA9046.1090709@web.de>
Use xmemdupz() to allocate the memory, copy the data and make sure to NUL-terminate the result, all in one step. The resulting code is shorter, doesn't contain the constants 1 and '\0', and avoids duplicating function parameters.
For blame, the last copied byte (o->file.ptr[o->file.size]) is always set to NUL by fake_working_tree_commit() or read_sha1_file(), so no information is lost by the conversion to using xmemdupz().
Signed-off-by: Rene Scharfe <l.s.r@web.de> --- builtin/apply.c | 4 +--- builtin/blame.c | 5 +---- connect.c | 4 +--- http-backend.c | 4 +--- path.c | 4 +--- sh-i18n--envsubst.c | 4 +--- 6 files changed, 6 insertions(+), 19 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c index 5fd099e..9f8f5ba 100644 --- a/builtin/apply.c +++ b/builtin/apply.c @@ -2867,9 +2867,7 @@ static int apply_binary_fragment(struct image *img, struct patch *patch) case BINARY_LITERAL_DEFLATED: clear_image(img); img->len = fragment->size; - img->buf = xmalloc(img->len+1); - memcpy(img->buf, fragment->patch, img->len); - img->buf[img->len] = '\0'; + img->buf = xmemdupz(fragment->patch, img->len); return 0; } return -1; diff --git a/builtin/blame.c b/builtin/blame.c index c59e702..32ce05f 100644 --- a/builtin/blame.c +++ b/builtin/blame.c @@ -2707,11 +2707,8 @@ parse_done: die("revision walk setup failed"); if (is_null_sha1(sb.final->object.sha1)) { - char *buf; o = sb.final->util; - buf = xmalloc(o->file.size + 1); - memcpy(buf, o->file.ptr, o->file.size + 1); - sb.final_buf = buf; + sb.final_buf = xmemdupz(o->file.ptr, o->file.size); sb.final_buf_size = o->file.size; } else { diff --git a/connect.c b/connect.c index 37ff018..5047402 100644 --- a/connect.c +++ b/connect.c @@ -64,9 +64,7 @@ static void parse_one_symref_info(struct string_list *symref, const char *val, i if (!len) return; /* just "symref" */ /* e.g. "symref=HEAD:refs/heads/master" */ - sym = xmalloc(len + 1); - memcpy(sym, val, len); - sym[len] = '\0'; + sym = xmemdupz(val, len); target = strchr(sym, ':'); if (!target) /* just "symref=something" */ diff --git a/http-backend.c b/http-backend.c index 57290d9..80790bb 100644 --- a/http-backend.c +++ b/http-backend.c @@ -610,9 +610,7 @@ int main(int argc, char **argv) cmd = c; n = out[0].rm_eo - out[0].rm_so; - cmd_arg = xmalloc(n); - memcpy(cmd_arg, dir + out[0].rm_so + 1, n-1); - cmd_arg[n-1] = '\0'; + cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); dir[out[0].rm_so] = 0; break; } diff --git a/path.c b/path.c index bc804a3..25c3b8b 100644 --- a/path.c +++ b/path.c @@ -249,9 +249,7 @@ int validate_headref(const char *path) static struct passwd *getpw_str(const char *username, size_t len) { struct passwd *pw; - char *username_z = xmalloc(len + 1); - memcpy(username_z, username, len); - username_z[len] = '\0'; + char *username_z = xmemdupz(username, len); pw = getpwnam(username_z); free(username_z); return pw; diff --git a/sh-i18n--envsubst.c b/sh-i18n--envsubst.c index 855d28c..6dd03a9 100644 --- a/sh-i18n--envsubst.c +++ b/sh-i18n--envsubst.c @@ -278,9 +278,7 @@ static string_list_ty variables_set; static void note_variable (const char *var_ptr, size_t var_len) { - char *string = xmalloc (var_len + 1); - memcpy (string, var_ptr, var_len); - string[var_len] = '\0'; + char *string = xmemdupz (var_ptr, var_len); string_list_append (&variables_set, string); }
-- 2.0.2