| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <strstream> |
| |
| // class strstreambuf |
| |
| // strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = 0); |
| |
| #include <strstream> |
| #include <cassert> |
| #include <cstring> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| unsigned char buf[] = "abcd"; |
| std::strstreambuf sb(buf, sizeof(buf)); |
| assert(sb.sgetc() == 'a'); |
| assert(sb.snextc() == 'b'); |
| assert(sb.snextc() == 'c'); |
| assert(sb.snextc() == 'd'); |
| assert(sb.snextc() == 0); |
| assert(sb.snextc() == EOF); |
| } |
| { |
| unsigned char buf[] = "abcd"; |
| std::strstreambuf sb(buf, 0); |
| assert(sb.sgetc() == 'a'); |
| assert(sb.snextc() == 'b'); |
| assert(sb.snextc() == 'c'); |
| assert(sb.snextc() == 'd'); |
| assert(sb.snextc() == EOF); |
| } |
| { |
| unsigned char buf[] = "abcd"; |
| std::strstreambuf sb(buf, sizeof(buf), buf); |
| assert(sb.sgetc() == EOF); |
| assert(sb.sputc('e') == 'e'); |
| assert(sb.sputc('f') == 'f'); |
| assert(sb.sputc('g') == 'g'); |
| assert(sb.sputc('h') == 'h'); |
| assert(sb.sputc('i') == 'i'); |
| assert(sb.sputc('j') == EOF); |
| assert(sb.sgetc() == 'e'); |
| assert(sb.snextc() == 'f'); |
| assert(sb.snextc() == 'g'); |
| assert(sb.snextc() == 'h'); |
| assert(sb.snextc() == 'i'); |
| assert(sb.snextc() == EOF); |
| } |
| { |
| unsigned char buf[] = "abcd"; |
| std::strstreambuf sb(buf, 0, buf); |
| assert(sb.sgetc() == EOF); |
| assert(sb.sputc('e') == 'e'); |
| assert(sb.sputc('f') == 'f'); |
| assert(sb.sputc('g') == 'g'); |
| assert(sb.sputc('h') == 'h'); |
| assert(sb.sputc('i') == EOF); |
| assert(sb.sgetc() == 'e'); |
| assert(sb.snextc() == 'f'); |
| assert(sb.snextc() == 'g'); |
| assert(sb.snextc() == 'h'); |
| assert(sb.snextc() == EOF); |
| } |
| { |
| unsigned char buf[10] = "abcd"; |
| std::size_t s = std::strlen((char*)buf); |
| std::strstreambuf sb(buf, sizeof(buf) - s, buf + s); |
| assert(sb.sgetc() == 'a'); |
| assert(sb.snextc() == 'b'); |
| assert(sb.snextc() == 'c'); |
| assert(sb.snextc() == 'd'); |
| assert(sb.snextc() == EOF); |
| assert(sb.sputc('e') == 'e'); |
| assert(sb.sputc('f') == 'f'); |
| assert(sb.sputc('g') == 'g'); |
| assert(sb.sputc('h') == 'h'); |
| assert(sb.sputc('i') == 'i'); |
| assert(sb.sputc('j') == 'j'); |
| assert(sb.sputc('j') == EOF); |
| assert(sb.sgetc() == 'e'); |
| assert(sb.snextc() == 'f'); |
| assert(sb.snextc() == 'g'); |
| assert(sb.snextc() == 'h'); |
| assert(sb.snextc() == 'i'); |
| assert(sb.snextc() == 'j'); |
| assert(sb.snextc() == EOF); |
| } |
| |
| return 0; |
| } |