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|
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Wez Furlong <wez@thebrainroom.com> |
| Scott MacVicar <scottmac@php.net> |
| Nuno Lopes <nlopess@php.net> |
| Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_compile.h"
#include "zend_stream.h"
#ifndef S_ISREG
# define S_ISREG(m) 1
#endif
ZEND_DLIMPORT int isatty(int fd);
static size_t zend_stream_stdio_reader(void *handle, char *buf, size_t len) /* {{{ */
{
return fread(buf, 1, len, (FILE*)handle);
} /* }}} */
static void zend_stream_stdio_closer(void *handle) /* {{{ */
{
if (handle && (FILE*)handle != stdin) {
fclose((FILE*)handle);
}
} /* }}} */
ZEND_API void zend_stream_init_fp(zend_file_handle *handle, FILE *fp, const char *filename) {
memset(handle, 0, sizeof(zend_file_handle));
handle->type = ZEND_HANDLE_FP;
handle->handle.fp = fp;
handle->filename = filename;
}
ZEND_API void zend_stream_init_filename(zend_file_handle *handle, const char *filename) {
memset(handle, 0, sizeof(zend_file_handle));
handle->type = ZEND_HANDLE_FILENAME;
handle->filename = filename;
}
ZEND_API int zend_stream_open(const char *filename, zend_file_handle *handle) /* {{{ */
{
zend_string *opened_path;
if (zend_stream_open_function) {
return zend_stream_open_function(filename, handle);
}
zend_stream_init_fp(handle, zend_fopen(filename, &opened_path), filename);
handle->opened_path = opened_path;
return handle->handle.fp ? SUCCESS : FAILURE;
} /* }}} */
static int zend_stream_getc(zend_file_handle *file_handle) /* {{{ */
{
char buf;
if (file_handle->handle.stream.reader(file_handle->handle.stream.handle, &buf, sizeof(buf))) {
return (int)buf;
}
return EOF;
} /* }}} */
static size_t zend_stream_read(zend_file_handle *file_handle, char *buf, size_t len) /* {{{ */
{
if (file_handle->handle.stream.isatty) {
int c = '*';
size_t n;
for (n = 0; n < len && (c = zend_stream_getc(file_handle)) != EOF && c != '\n'; ++n) {
buf[n] = (char)c;
}
if (c == '\n') {
buf[n++] = (char)c;
}
return n;
}
return file_handle->handle.stream.reader(file_handle->handle.stream.handle, buf, len);
} /* }}} */
ZEND_API int zend_stream_fixup(zend_file_handle *file_handle, char **buf, size_t *len) /* {{{ */
{
size_t size = 0;
if (file_handle->buf) {
*buf = file_handle->buf;
*len = file_handle->len;
return SUCCESS;
}
if (file_handle->type == ZEND_HANDLE_FILENAME) {
if (zend_stream_open(file_handle->filename, file_handle) == FAILURE) {
return FAILURE;
}
}
if (file_handle->type == ZEND_HANDLE_FP) {
FILE *fp = file_handle->handle.fp;
int is_tty;
if (!fp) {
return FAILURE;
}
is_tty = isatty(fileno(fp));
if (!is_tty) {
zend_stat_t buf;
if (zend_fstat(fileno(fp), &buf) == 0 && S_ISREG(buf.st_mode)) {
size = buf.st_size;
}
}
file_handle->type = ZEND_HANDLE_STREAM;
file_handle->handle.stream.handle = fp;
file_handle->handle.stream.isatty = is_tty;
file_handle->handle.stream.reader = (zend_stream_reader_t)zend_stream_stdio_reader;
file_handle->handle.stream.closer = (zend_stream_closer_t)zend_stream_stdio_closer;
}
if (size) {
file_handle->buf = *buf = safe_emalloc(1, size, ZEND_MMAP_AHEAD);
file_handle->len = zend_stream_read(file_handle, *buf, size);
} else {
size_t read, remain = 4*1024;
*buf = emalloc(remain);
size = 0;
while ((read = zend_stream_read(file_handle, *buf + size, remain)) > 0) {
size += read;
remain -= read;
if (remain == 0) {
*buf = safe_erealloc(*buf, size, 2, 0);
remain = size;
}
}
file_handle->len = size;
if (size && remain < ZEND_MMAP_AHEAD) {
*buf = safe_erealloc(*buf, size, 1, ZEND_MMAP_AHEAD);
}
file_handle->buf = *buf;
}
if (file_handle->len == 0) {
*buf = erealloc(*buf, ZEND_MMAP_AHEAD);
file_handle->buf = *buf;
}
memset(file_handle->buf + file_handle->len, 0, ZEND_MMAP_AHEAD);
*buf = file_handle->buf;
*len = file_handle->len;
return SUCCESS;
} /* }}} */
ZEND_API void zend_file_handle_dtor(zend_file_handle *fh) /* {{{ */
{
switch (fh->type) {
case ZEND_HANDLE_FP:
fclose(fh->handle.fp);
break;
case ZEND_HANDLE_STREAM:
if (fh->handle.stream.closer && fh->handle.stream.handle) {
fh->handle.stream.closer(fh->handle.stream.handle);
}
fh->handle.stream.handle = NULL;
break;
case ZEND_HANDLE_FILENAME:
/* We're only supposed to get here when destructing the used_files hash,
* which doesn't really contain open files, but references to their names/paths
*/
break;
}
if (fh->opened_path) {
zend_string_release_ex(fh->opened_path, 0);
fh->opened_path = NULL;
}
if (fh->buf) {
efree(fh->buf);
fh->buf = NULL;
}
}
/* }}} */
ZEND_API int zend_compare_file_handles(zend_file_handle *fh1, zend_file_handle *fh2) /* {{{ */
{
if (fh1->type != fh2->type) {
return 0;
}
switch (fh1->type) {
case ZEND_HANDLE_FP:
return fh1->handle.fp == fh2->handle.fp;
case ZEND_HANDLE_STREAM:
return fh1->handle.stream.handle == fh2->handle.stream.handle;
default:
return 0;
}
return 0;
} /* }}} */
|
