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php_http_buffer.h
/* +--------------------------------------------------------------------+ | 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> | +--------------------------------------------------------------------+ */ #ifndef PHP_HTTP_BUFFER_H #define PHP_HTTP_BUFFER_H #ifndef PHP_HTTP_BUFFER_DEFAULT_SIZE # define PHP_HTTP_BUFFER_DEFAULT_SIZE 256 #endif #define PHP_HTTP_BUFFER_ERROR ((size_t) -1) #define PHP_HTTP_BUFFER_NOMEM PHP_HTTP_BUFFER_ERROR #define PHP_HTTP_BUFFER_PASS0 PHP_HTTP_BUFFER_ERROR #ifndef PTR_FREE # define PTR_FREE(PTR) \ { \ if (EXPECTED(PTR)) { \ efree(PTR); \ } \ } #endif #ifndef PTR_SET # define PTR_SET(PTR, SET) \ { \ PTR_FREE(PTR); \ PTR = SET; \ } #endif #ifdef PHP_ATTRIBUTE_FORMAT # define PHP_HTTP_BUFFER_ATTRIBUTE_FORMAT(f, a, b) PHP_ATTRIBUTE_FORMAT(f, a, b) #else # define PHP_HTTP_BUFFER_ATTRIBUTE_FORMAT(f, a, b) #endif #ifndef pemalloc # define pemalloc(s,p) malloc(s) # define pefree(x,p) free(x) # define perealloc(x,s,p) realloc(x,s) # define perealloc_recoverable perealloc # define ecalloc calloc static inline void *estrndup(void *p, size_t s) { char *r = (char *) malloc(s+1); if (r) memcpy((void *) r, p, s), r[s] = '\0'; return (void *) r; } #endif #if defined(PHP_WIN32) # if defined(PHP_HTTP_BUFFER_EXPORTS) # define PHP_HTTP_BUFFER_API __declspec(dllexport) # elif defined(COMPILE_DL_PHP_HTTP_BUFFER) # define PHP_HTTP_BUFFER_API __declspec(dllimport) # else # define PHP_HTTP_BUFFER_API # endif #else # define PHP_HTTP_BUFFER_API #endif #define PHP_HTTP_BUFFER(p) ((php_http_buffer_t *) (p)) #define FREE_PHP_HTTP_BUFFER_PTR(STR) pefree(STR, STR->pmem) #define FREE_PHP_HTTP_BUFFER_VAL(STR) php_http_buffer_dtor(STR) #define FREE_PHP_HTTP_BUFFER_ALL(STR) php_http_buffer_free(&(STR)) #define FREE_PHP_HTTP_BUFFER(free, STR) \ switch (free) \ { \ case PHP_HTTP_BUFFER_FREE_NOT: \ break; \ case PHP_HTTP_BUFFER_FREE_PTR: \ pefree(STR, STR->pmem); \ break; \ case PHP_HTTP_BUFFER_FREE_VAL: \ php_http_buffer_dtor(STR); \ break; \ case PHP_HTTP_BUFFER_FREE_ALL: { \ php_http_buffer_t *PTR = (STR); \ php_http_buffer_free(&PTR); \ break; \ } \ default:\ break; \ } #define RETURN_PHP_HTTP_BUFFER_PTR(STR) RETURN_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_PTR, 0) #define RETURN_PHP_HTTP_BUFFER_VAL(STR) RETURN_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_NOT, 0) #define RETURN_PHP_HTTP_BUFFER_DUP(STR) RETURN_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_NOT, 1) #define RETVAL_PHP_HTTP_BUFFER_PTR(STR) RETVAL_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_PTR, 0) #define RETVAL_PHP_HTTP_BUFFER_VAL(STR) RETVAL_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_NOT, 0) #define RETVAL_PHP_HTTP_BUFFER_DUP(STR) RETVAL_PHP_HTTP_BUFFER((STR), PHP_HTTP_BUFFER_FREE_NOT, 1) /* RETURN_PHP_HTTP_BUFFER(buf, PHP_HTTP_BUFFER_FREE_PTR, 0) */ #define RETURN_PHP_HTTP_BUFFER(STR, free, dup) \ RETVAL_PHP_HTTP_BUFFER((STR), (free), (dup)); \ return; #define RETVAL_PHP_HTTP_BUFFER(STR, free, dup) \ php_http_buffer_fix(STR); \ RETVAL_STRINGL((STR)->data, (STR)->used, (dup)); \ FREE_PHP_HTTP_BUFFER((free), (STR)); typedef struct php_http_buffer { char *data; size_t used; size_t free; size_t size; unsigned pmem:1; unsigned reserved:31; } php_http_buffer_t; typedef enum php_http_buffer_free { PHP_HTTP_BUFFER_FREE_NOT = 0, PHP_HTTP_BUFFER_FREE_PTR, /* pefree() */ PHP_HTTP_BUFFER_FREE_VAL, /* php_http_buffer_dtor() */ PHP_HTTP_BUFFER_FREE_ALL /* php_http_buffer_free() */ } php_http_buffer_free_t; #define PHP_HTTP_BUFFER_ALL_FREE(STR) PHP_HTTP_BUFFER_FREE_ALL,(STR) #define PHP_HTTP_BUFFER_PTR_FREE(STR) PHP_HTTP_BUFFER_FREE_PTR,(STR) #define PHP_HTTP_BUFFER_VAL_FREE(STR) PHP_HTTP_BUFFER_FREE_VAL,(STR) #define PHP_HTTP_BUFFER_NOT_FREE(STR) PHP_HTTP_BUFFER_FREE_NOT,(STR) #define PHP_HTTP_BUFFER_INIT_PREALLOC 0x01 #define PHP_HTTP_BUFFER_INIT_PERSISTENT 0x02 /* create a new php_http_buffer_t */ #define php_http_buffer_new() php_http_buffer_init(NULL) #define php_http_buffer_init(b) php_http_buffer_init_ex(b, PHP_HTTP_BUFFER_DEFAULT_SIZE, 0) #define php_http_buffer_clone(from, to) php_http_buffer_init_ex((to), (from)->size, (from)->pmem ? PHP_HTTP_BUFFER_INIT_PERSISTENT:0) PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_init_ex(php_http_buffer_t *buf, size_t chunk_size, unsigned flags); /* create a php_http_buffer_t from a zval or c-string */ #define php_http_buffer_from_zval(z) php_http_buffer_from_string(Z_STRVAL(z), Z_STRLEN(z)) #define php_http_buffer_from_zval_ex(b, z) php_http_buffer_from_string_ex(b, Z_STRVAL(z), Z_STRLEN(z)) #define php_http_buffer_from_string(s, l) php_http_buffer_from_string_ex(NULL, (s), (l)) 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); /* usually only called from within the internal functions */ #define php_http_buffer_resize(b, s) php_http_buffer_resize_ex((b), (s), 0, 0) PHP_HTTP_BUFFER_API size_t php_http_buffer_resize_ex(php_http_buffer_t *buf, size_t len, size_t override_size, zend_bool allow_error); PHP_HTTP_BUFFER_API char *php_http_buffer_account(php_http_buffer_t *buf, size_t to_account); /* shrink memory chunk to actually used size (+1) */ PHP_HTTP_BUFFER_API size_t php_http_buffer_shrink(php_http_buffer_t *buf); /* append data to the php_http_buffer_t */ #define php_http_buffer_appends(b, a) php_http_buffer_append((b), (a), sizeof(a)-1) #define php_http_buffer_appendl(b, a) php_http_buffer_append((b), (a), strlen(a)) #define php_http_buffer_appendz(b, z) php_http_buffer_append((b), (z)->val, (z)->len) PHP_HTTP_BUFFER_API size_t php_http_buffer_append(php_http_buffer_t *buf, const char *append, size_t append_len); PHP_HTTP_BUFFER_API size_t php_http_buffer_appendf(php_http_buffer_t *buf, const char *format, ...) PHP_HTTP_BUFFER_ATTRIBUTE_FORMAT(printf, 2, 3); /* get a zero-terminated string */ PHP_HTTP_BUFFER_API char *php_http_buffer_data(const php_http_buffer_t *buf, char **into, size_t *len); /* remove a substring */ PHP_HTTP_BUFFER_API size_t php_http_buffer_cut(php_http_buffer_t *buf, size_t offset, size_t length); /* sets a trailing NUL byte */ PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_fix(php_http_buffer_t *buf); /* reset php_http_buffer_t object */ PHP_HTTP_BUFFER_API void php_http_buffer_reset(php_http_buffer_t *buf); /* free a php_http_buffer_t objects contents */ PHP_HTTP_BUFFER_API void php_http_buffer_dtor(php_http_buffer_t *buf); /* free a php_http_buffer_t object completely */ PHP_HTTP_BUFFER_API void php_http_buffer_free(php_http_buffer_t **buf); /* stores data in a php_http_buffer_t until it reaches chunk_size */ 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); typedef size_t (*php_http_buffer_pass_func_t)(void *opaque, char *, size_t); 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); /* wrapper around php_http_buffer_chunk_buffer, which passes available chunks to passthru() */ 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_size, php_http_buffer_pass_func_t passout, void *opaque); /* write chunks directly into php_http_buffer_t buffer */ 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); # ifdef PHP_HTTP_BUFFER_EXTENDED /* memcmp for php_http_buffer_t objects */ PHP_HTTP_BUFFER_API int php_http_buffer_cmp(php_http_buffer_t *left, php_http_buffer_t *right); /* get a complete php_http_buffer_t duplicate */ PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_copy(const php_http_buffer_t *from, php_http_buffer_t *to); /* merge several php_http_buffer_t objects use like: php_http_buffer_t *final = php_http_buffer_merge(3, PHP_HTTP_BUFFER_NOT_FREE(&keep), PHP_HTTP_BUFFER_ALL_FREE(middle_ptr), PHP_HTTP_BUFFER_VAL_FREE(&local); */ PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge(unsigned argc, ...); PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge_ex(php_http_buffer_t *buf, unsigned argc, ...); PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_merge_va(php_http_buffer_t *buf, unsigned argc, va_list argv); /* insert data at a specific position of the php_http_buffer_t */ #define php_http_buffer_inserts(b, i, o) php_http_buffer_insert((b), (i), sizeof(i)-1, (o)) #define php_http_buffer_insertl(b, i, o) php_http_buffer_insert((b), (i), strlen(i), (o)) 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); PHP_HTTP_BUFFER_API size_t php_http_buffer_insertf(php_http_buffer_t *buf, size_t offset, const char *format, ...) PHP_HTTP_BUFFER_ATTRIBUTE_FORMAT(printf, 3, 4); /* prepend data */ #define php_http_buffer_prepends(b, p) php_http_buffer_prepend((b), (p), sizeof(p)-1) #define php_http_buffer_prependl(b, p) php_http_buffer_prepend((b), (p), strlen(p)) PHP_HTTP_BUFFER_API size_t php_http_buffer_prepend(php_http_buffer_t *buf, const char *prepend, size_t prepend_len); PHP_HTTP_BUFFER_API size_t php_http_buffer_prependf(php_http_buffer_t *buf, const char *format, ...) PHP_HTTP_BUFFER_ATTRIBUTE_FORMAT(printf, 2, 3); /* get a part of the php_http_buffer_t */ #define php_http_buffer_mid(b, o, l) php_http_buffer_sub((b), (o), (l)) #define php_http_buffer_left(b, l) php_http_buffer_sub((b), 0, (l)) PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_right(const php_http_buffer_t *buf, size_t length); PHP_HTTP_BUFFER_API php_http_buffer_t *php_http_buffer_sub(const php_http_buffer_t *buf, size_t offset, size_t len); # endif /* PHP_HTTP_BUFFER_EXTENDED */ #endif /* PHP_HTTP_BUFFER_H */ /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * End: * vim600: sw=4 ts=4 fdm=marker * vim<600: sw=4 ts=4 */
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