/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/stream.c
C | 129 lines | 90 code | 20 blank | 19 comment | 16 complexity | 8a73ed02e0840267b565e1dec0446ec3 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, MPL-2.0-no-copyleft-exception, BSD-3-Clause
- /*
- stream.c - `Stream' object
- Copyright (C) 2008 siliconforks.com
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #define _GNU_SOURCE
- #include <config.h>
- #include "stream.h"
- #include <stdarg.h>
- #include <stdint.h>
- #include <string.h>
- #include "util.h"
- Stream * Stream_new(size_t capacity) {
- Stream * result = xmalloc(sizeof(Stream));
- result->length = 0;
- if (capacity == 0) {
- capacity = 8192;
- }
- result->capacity = capacity;
- result->data = xmalloc(capacity);
- return result;
- }
- void Stream_write(Stream * stream, const void * p, size_t size) {
- size_t stream_length = stream->length;
- size_t stream_capacity = stream->capacity;
- if (stream_capacity - stream_length < size) {
- if (SIZE_MAX - size < stream_length) {
- fatal("out of memory");
- }
- if (SIZE_MAX / 2 < stream_capacity) {
- stream_capacity = SIZE_MAX;
- }
- else {
- stream_capacity *= 2;
- }
- size_t new_length = stream_length + size;
- if (stream_capacity < new_length) {
- stream_capacity = new_length;
- }
- stream->data = xrealloc(stream->data, stream_capacity);
- stream->capacity = stream_capacity;
- memcpy(stream->data + stream_length, p, size);
- stream->length = new_length;
- }
- else {
- memcpy(stream->data + stream_length, p, size);
- stream->length = stream_length + size;
- }
- }
- void Stream_write_string(Stream * stream, const char * s) {
- Stream_write(stream, s, strlen(s));
- }
- void Stream_write_char(Stream * stream, char c) {
- size_t stream_length = stream->length;
- if (stream_length == stream->capacity) {
- if (stream->capacity == SIZE_MAX) {
- fatal("out of memory");
- }
- if (SIZE_MAX / 2 < stream->capacity) {
- stream->capacity = SIZE_MAX;
- }
- else {
- stream->capacity *= 2;
- }
- stream->data = xrealloc(stream->data, stream->capacity);
- }
- stream->data[stream_length] = c;
- stream->length = stream_length + 1;
- }
- void Stream_printf(Stream * stream, const char * format, ...) {
- va_list a;
- va_start(a, format);
- char * s = NULL;
- /* note that size does not include the NUL character */
- int size = vasprintf(&s, format, a);
- if (size < 0) {
- fatal("out of memory");
- }
- Stream_write(stream, s, size);
- free(s);
- va_end(a);
- }
- void Stream_write_file_contents(Stream * stream, FILE * f) {
- char buffer[8192];
- size_t bytes_read;
- while ((bytes_read = fread(buffer, 1, 8192, f)) > 0) {
- Stream_write(stream, buffer, bytes_read);
- }
- }
- void Stream_delete(Stream * stream) {
- free(stream->data);
- free(stream);
- }
- void Stream_reset(Stream * stream) {
- stream->length = 0;
- }