--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | PECL :: http |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted provided that the conditions mentioned |
+ | in the accompanying LICENSE file are met. |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2004-2014, Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include <php.h>
+#include "php_http_buffer.h"
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_init_ex(php_http_buffer_t *buf, size_t chunk_size, int flags)
+{
+ if (!buf) {
+ buf = pemalloc(sizeof(*buf), flags & PHP_HTTP_BUFFER_INIT_PERSISTENT);
+ }
+
+ if (buf) {
+ buf->size = (chunk_size) ? chunk_size : PHP_HTTP_BUFFER_DEFAULT_SIZE;
+ buf->pmem = (flags & PHP_HTTP_BUFFER_INIT_PERSISTENT) ? 1 : 0;
+ buf->data = (flags & PHP_HTTP_BUFFER_INIT_PREALLOC) ? pemalloc(buf->size, buf->pmem) : NULL;
+ buf->free = (flags & PHP_HTTP_BUFFER_INIT_PREALLOC) ? buf->size : 0;
+ buf->used = 0;
+ }
+
+ return buf;
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_from_string_ex(php_http_buffer_t *buf, const char *string, size_t length)
+{
+ if ((buf = php_http_buffer_init(buf))) {
+ if (PHP_HTTP_BUFFER_NOMEM == php_http_buffer_append(buf, string, length)) {
+ pefree(buf, buf->pmem);
+ buf = NULL;
+ }
+ }
+ return buf;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_resize_ex(php_http_buffer_t *buf, size_t len, size_t override_size, int allow_error)
+{
+ char *ptr = NULL;
+#if 0
+ fprintf(stderr, "RESIZE: len=%lu, size=%lu, used=%lu, free=%lu, total=%lu\n", len, buf->size, buf->used, buf->free, buf->free+buf->used);
+#endif
+ if (buf->free < len) {
+ size_t size = override_size ? override_size : buf->size;
+
+ while ((size + buf->free) < len) {
+ size <<= 1;
+ }
+
+ if (allow_error) {
+ ptr = perealloc_recoverable(buf->data, buf->used + buf->free + size, buf->pmem);
+ } else {
+ ptr = perealloc(buf->data, buf->used + buf->free + size, buf->pmem);
+ }
+
+ if (ptr) {
+ buf->data = ptr;
+ } else {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+
+ buf->free += size;
+ return size;
+ }
+ return 0;
+}
+
+PHP_HTTP_BUFFER_API char *php_http_buffer_account(php_http_buffer_t *buf, size_t to_account)
+{
+ assert(to_account <= buf->free);
+
+ buf->free -= to_account;
+ buf->used += to_account;
+
+ return buf->data + buf->used;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_shrink(php_http_buffer_t *buf)
+{
+ /* avoid another realloc on fixation */
+ if (buf->free > 1) {
+ char *ptr = perealloc(buf->data, buf->used + 1, buf->pmem);
+
+ if (ptr) {
+ buf->data = ptr;
+ } else {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ buf->free = 1;
+ }
+ return buf->used;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_append(php_http_buffer_t *buf, const char *append, size_t append_len)
+{
+ if (buf->free < append_len && PHP_HTTP_BUFFER_NOMEM == php_http_buffer_resize(buf, append_len)) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ memcpy(buf->data + buf->used, append, append_len);
+ buf->used += append_len;
+ buf->free -= append_len;
+ return append_len;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_appendf(php_http_buffer_t *buf, const char *format, ...)
+{
+ va_list argv;
+ char *append;
+ size_t append_len, alloc;
+
+ va_start(argv, format);
+ append_len = vspprintf(&append, 0, format, argv);
+ va_end(argv);
+
+ alloc = php_http_buffer_append(buf, append, append_len);
+ efree(append);
+
+ if (PHP_HTTP_BUFFER_NOMEM == alloc) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ return append_len;
+}
+
+PHP_HTTP_BUFFER_API char *php_http_buffer_data(const php_http_buffer_t *buf, char **into, size_t *len)
+{
+ char *copy = ecalloc(1, buf->used + 1);
+ memcpy(copy, buf->data, buf->used);
+ if (into) {
+ *into = copy;
+ }
+ if (len) {
+ *len = buf->used;
+ }
+ return copy;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_cut(php_http_buffer_t *buf, size_t offset, size_t length)
+{
+ if (offset > buf->used) {
+ return 0;
+ }
+ if (offset + length > buf->used) {
+ length = buf->used - offset;
+ }
+ memmove(buf->data + offset, buf->data + offset + length, buf->used - length - offset);
+ buf->used -= length;
+ buf->free += length;
+ return length;
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_fix(php_http_buffer_t *buf)
+{
+ if (buf->free < 1 && PHP_HTTP_BUFFER_NOMEM == php_http_buffer_resize_ex(buf, 1, 1, 0)) {
+ return NULL;
+ }
+ buf->data[buf->used] = '\0';
+ return buf;
+}
+
+PHP_HTTP_BUFFER_API void php_http_buffer_reset(php_http_buffer_t *buf)
+{
+ buf->free += buf->used;
+ buf->used = 0;
+}
+
+PHP_HTTP_BUFFER_API void php_http_buffer_dtor(php_http_buffer_t *buf)
+{
+ if (buf->data) {
+ pefree(buf->data, buf->pmem);
+ buf->data = NULL;
+ }
+ buf->used = 0;
+ buf->free = 0;
+}
+
+PHP_HTTP_BUFFER_API void php_http_buffer_free(php_http_buffer_t **buf)
+{
+ if (*buf) {
+ php_http_buffer_dtor(*buf);
+ pefree(*buf, (*buf)->pmem);
+ *buf = NULL;
+ }
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_chunk_buffer(php_http_buffer_t **s, const char *data, size_t data_len, char **chunk, size_t chunk_size)
+{
+ php_http_buffer_t *storage;
+
+ *chunk = NULL;
+
+ if (!*s) {
+ *s = php_http_buffer_init_ex(NULL, chunk_size << 1, chunk_size ? PHP_HTTP_BUFFER_INIT_PREALLOC : 0);
+ }
+ storage = *s;
+
+ if (data_len) {
+ php_http_buffer_append(storage, data, data_len);
+ }
+
+ if (!chunk_size) {
+ php_http_buffer_data(storage, chunk, &chunk_size);
+ php_http_buffer_free(s);
+ return chunk_size;
+ }
+
+ if (storage->used >= chunk_size) {
+ *chunk = estrndup(storage->data, chunk_size);
+ php_http_buffer_cut(storage, 0, chunk_size);
+ return chunk_size;
+ }
+
+ return 0;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_chunked_output(php_http_buffer_t **s, const char *data, size_t data_len, size_t chunk_len, php_http_buffer_pass_func_t passout, void *opaque TSRMLS_DC)
+{
+ char *chunk = NULL;
+ size_t passed = 0, got = 0;
+
+ while ((got = php_http_buffer_chunk_buffer(s, data, data_len, &chunk, chunk_len))) {
+ if (PHP_HTTP_BUFFER_PASS0 == passout(opaque, chunk, got TSRMLS_CC)) {
+ PTR_SET(chunk, NULL);
+ return PHP_HTTP_BUFFER_PASS0;
+ }
+ ++passed;
+ if (!chunk_len) {
+ /* we already got the last chunk,
+ and freed all resources */
+ break;
+ }
+ data = NULL;
+ data_len = 0;
+ PTR_SET(chunk, NULL);
+ }
+ PTR_FREE(chunk);
+ return passed;
+}
+
+PHP_HTTP_BUFFER_API ssize_t php_http_buffer_passthru(php_http_buffer_t **s, size_t chunk_size, php_http_buffer_pass_func_t passin, void *passin_arg, php_http_buffer_pass_func_t passon, void *passon_arg TSRMLS_DC)
+{
+ size_t passed_on = 0, passed_in = php_http_buffer_chunked_input(s, chunk_size, passin, passin_arg TSRMLS_CC);
+
+ if (passed_in == PHP_HTTP_BUFFER_PASS0) {
+ return passed_in;
+ }
+ if (passed_in || (*s)->used) {
+ passed_on = passon(passon_arg, (*s)->data, (*s)->used TSRMLS_CC);
+
+ if (passed_on == PHP_HTTP_BUFFER_PASS0) {
+ return passed_on;
+ }
+
+ if (passed_on) {
+ php_http_buffer_cut(*s, 0, passed_on);
+ }
+ }
+
+ return passed_on - passed_in;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_chunked_input(php_http_buffer_t **s, size_t chunk_size, php_http_buffer_pass_func_t passin, void *opaque TSRMLS_DC)
+{
+ php_http_buffer_t *str;
+ size_t passed;
+
+ if (!*s) {
+ *s = php_http_buffer_init_ex(NULL, chunk_size, chunk_size ? PHP_HTTP_BUFFER_INIT_PREALLOC : 0);
+ }
+ str = *s;
+
+ php_http_buffer_resize(str, chunk_size);
+ passed = passin(opaque, str->data + str->used, chunk_size TSRMLS_CC);
+
+ if (passed != PHP_HTTP_BUFFER_PASS0) {
+ str->used += passed;
+ str->free -= passed;
+ }
+
+ php_http_buffer_fix(str);
+
+ return passed;
+}
+
+#ifdef PHP_HTTP_BUFFER_EXTENDED
+
+PHP_HTTP_BUFFER_API int php_http_buffer_cmp(php_http_buffer_t *left, php_http_buffer_t *right)
+{
+ if (left->used > right->used) {
+ return -1;
+ } else if (right->used > left->used) {
+ return 1;
+ } else {
+ return memcmp(left->data, right->data, left->used);
+ }
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_copy(const php_http_buffer_t *from, php_http_buffer_t *to)
+{
+ int free_to = !to;
+
+ to = php_http_buffer_clone(from, to);
+
+ if (PHP_HTTP_BUFFER_NOMEM == php_http_buffer_append(to, from->data, from->used)) {
+ if (free_to) {
+ php_http_buffer_free(&to);
+ } else {
+ php_http_buffer_dtor(to);
+ }
+ }
+ return to;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_insert(php_http_buffer_t *buf, const char *insert, size_t insert_len, size_t offset)
+{
+ if (PHP_HTTP_BUFFER_NOMEM == php_http_buffer_resize(buf, insert_len)) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ memmove(buf->data + offset + insert_len, buf->data + offset, insert_len);
+ memcpy(buf->data + offset, insert, insert_len);
+ buf->used += insert_len;
+ buf->free -= insert_len;
+ return insert_len;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_insertf(php_http_buffer_t *buf, size_t offset, const char *format, ...)
+{
+ va_list argv;
+ char *insert;
+ size_t insert_len, alloc;
+
+ va_start(argv, format);
+ insert_len = vspprintf(&insert, 0, format, argv);
+ va_end(argv);
+
+ alloc = php_http_buffer_insert(buf, insert, insert_len, offset);
+ efree(insert);
+
+ if (PHP_HTTP_BUFFER_NOMEM == alloc) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ return insert_len;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_prepend(php_http_buffer_t *buf, const char *prepend, size_t prepend_len)
+{
+ if (PHP_HTTP_BUFFER_NOMEM == php_http_buffer_resize(buf, prepend_len)) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ memmove(buf->data + prepend_len, buf->data, buf->used);
+ memcpy(buf->data, prepend, prepend_len);
+ buf->used += prepend_len;
+ buf->free -= prepend_len;
+ return prepend_len;
+}
+
+PHP_HTTP_BUFFER_API size_t php_http_buffer_prependf(php_http_buffer_t *buf, const char *format, ...)
+{
+ va_list argv;
+ char *prepend;
+ size_t prepend_len, alloc;
+
+ va_start(argv, format);
+ prepend_len = vspprintf(&prepend, 0, format, argv);
+ va_end(argv);
+
+ alloc = php_http_buffer_prepend(buf, prepend, prepend_len);
+ efree(prepend);
+
+ if (PHP_HTTP_BUFFER_NOMEM == alloc) {
+ return PHP_HTTP_BUFFER_NOMEM;
+ }
+ return prepend_len;
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_sub(const php_http_buffer_t *buf, size_t offset, size_t length)
+{
+ if (offset >= buf->used) {
+ return NULL;
+ } else {
+ size_t need = 1 + ((length + offset) > buf->used ? (buf->used - offset) : (length - offset));
+ php_http_buffer_t *sub = php_http_buffer_init_ex(NULL, need, PHP_HTTP_BUFFER_INIT_PREALLOC | (buf->pmem ? PHP_HTTP_BUFFER_INIT_PERSISTENT:0));
+ if (sub) {
+ if (PHP_HTTP_BUFFER_NOMEM == php_http_buffer_append(sub, buf->data + offset, need)) {
+ php_http_buffer_free(&sub);
+ } else {
+ sub->size = buf->size;
+ }
+ }
+ return sub;
+ }
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_right(const php_http_buffer_t *buf, size_t length)
+{
+ if (length < buf->used) {
+ return php_http_buffer_sub(buf, buf->used - length, length);
+ } else {
+ return php_http_buffer_sub(buf, 0, buf->used);
+ }
+}
+
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge_va(php_http_buffer_t *buf, unsigned argc, va_list argv)
+{
+ unsigned i = 0;
+ buf = php_http_buffer_init(buf);
+
+ if (buf) {
+ while (argc > i++) {
+ php_http_buffer_free_t f = va_arg(argv, php_http_buffer_free_t);
+ php_http_buffer_t *current = va_arg(argv, php_http_buffer_t *);
+ php_http_buffer_append(buf, current->data, current->used);
+ FREE_PHP_HTTP_BUFFER(f, current);
+ }
+ }
+
+ return buf;
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge_ex(php_http_buffer_t *buf, unsigned argc, ...)
+{
+ va_list argv;
+ php_http_buffer_t *ret;
+
+ va_start(argv, argc);
+ ret = php_http_buffer_merge_va(buf, argc, argv);
+ va_end(argv);
+ return ret;
+}
+
+PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge(unsigned argc, ...)
+{
+ va_list argv;
+ php_http_buffer_t *ret;
+
+ va_start(argv, argc);
+ ret = php_http_buffer_merge_va(NULL, argc, argv);
+ va_end(argv);
+ return ret;
+}
+
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: sw=4 ts=4 fdm=marker
+ * vim<600: sw=4 ts=4
+ */
+
projects / m6w6 / ext-http / blobdiff