parser3/src/main/pa_common.C - diff

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Diff for /parser3/src/main/pa_common.C between versions 1.137 and 1.143.2.21.2.7

version 1.137, 2002/12/05 12:53:48	version 1.143.2.21.2.7, 2003/03/20 14:19:09
Line 1	Line 1
/** @file	/** @file
Parser: commonly functions.	Parser: commonly functions.

Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)	Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/	*/

Line 9 static const char* IDENT_COMMON_C="$Date	Line 9 static const char* IDENT_COMMON_C="$Date

#include "pa_common.h"	#include "pa_common.h"
#include "pa_exception.h"	#include "pa_exception.h"
#include "pa_globals.h"
#include "pa_hash.h"	#include "pa_hash.h"
	#include "pa_globals.h"

	//#define PA_HTTP

	#ifdef PA_HTTP
#include "pa_vstring.h"	#include "pa_vstring.h"
#include "pa_vdate.h"	#include "pa_vint.h"

	#ifdef CYGWIN
	#define _GNU_H_WINDOWS32_SOCKETS
	// for PASCAL
	#include <windows.h>
	// SOCKET
	typedef u_int SOCKET;
	int PASCAL closesocket(SOCKET);
	#else
	# if defined(WIN32)
	# include <windows.h>
	# else
	# define closesocket close
	# endif
	#endif

#ifdef WIN32
# include <windows.h>
#else	#else
# define closesocket close
	# if defined(WIN32)
	# include <windows.h>
	# endif

#endif	#endif

// some maybe-undefined constants	// some maybe-undefined constants
Line 29 static const char* IDENT_COMMON_C="$Date	Line 50 static const char* IDENT_COMMON_C="$Date
# define _O_BINARY 0	# define _O_BINARY 0
#endif	#endif

	#ifdef HAVE_FTRUNCATE
	# define PA_O_TRUNC 0
	#else
	# ifdef _O_TRUNC
	# define PA_O_TRUNC _O_TRUNC
	# else
	# error you must have either ftruncate function or _O_TRUNC bit declared
	# endif
	#endif

// locking constants	// locking constants

#ifdef HAVE_FLOCK	#ifdef HAVE_FLOCK
Line 74 static int unlock(int fd) { FLOCK(F_TLOC	Line 105 static int unlock(int fd) { FLOCK(F_TLOC
#endif	#endif
#endif	#endif

	// defines for globals

	#define FILE_STATUS_NAME "status"

	// globals

	const String file_status_name(FILE_STATUS_NAME);

	// defines for statics

	#define HTTP_METHOD_NAME "method"
	#define HTTP_TIMEOUT_NAME "timeout"
	#define HTTP_HEADERS_NAME "headers"
	#define HTTP_ANY_STATUS_NAME "any-status"

	// statics

	static const String http_method_name(HTTP_METHOD_NAME);
	static const String http_timeout_name(HTTP_TIMEOUT_NAME);
	static const String http_headers_name(HTTP_HEADERS_NAME);
	static const String http_any_status_name(HTTP_ANY_STATUS_NAME);

	// defines

#define DEFAULT_USER_AGENT "parser3"	#define DEFAULT_USER_AGENT "parser3"

	// functions

void fix_line_breaks(char* buf, size_t& size) {	void fix_line_breaks(char* buf, size_t& size) {
	if(size==0)
	return;

//_asm int 3;	//_asm int 3;
const char* const eob=buf+size;	const char* const eob=buf+size;
char* dest=buf;	char* dest=buf;
Line 102 void fix_line_breaks(char* buf, size_t&	Line 161 void fix_line_breaks(char* buf, size_t&
memcpy(dest, bol, eob-bol);	memcpy(dest, bol, eob-bol);
}	}

char* file_read_text(Pool& pool, const String& file_spec,	char* file_read_text(Charset& charset,
	const String& file_spec,
bool fail_on_read_problem,	bool fail_on_read_problem,
Hash params, Hash* out_fields) {	HashStringValue* params/, HashStringValue * out_fields*/) {
void *result; size_t size;	File_read_result file=
return file_read(pool, file_spec, result, size, true, params, out_fields, fail_on_read_problem)?(char *)result:0;	file_read(charset, file_spec, true, params, fail_on_read_problem);
	return file.success?file.str:0;
}	}

	#ifdef PA_HTTP
//http request stuff	//http request stuff
/* ********************** http stuff ********************* */

static bool set_addr(struct sockaddr_in addr, const char host, const short port){	static bool set_addr(struct sockaddr_in addr, const char host, const short port){
memset(addr, 0, sizeof(*addr));	memset(addr, 0, sizeof(*addr));
Line 126 static bool set_addr(struct sockaddr_in	Line 187 static bool set_addr(struct sockaddr_in
return true;	return true;
}	}

static void http_read_response(String& response, int sock){	static int http_read_responseString& response, int sock, bool fail_on_status_ne_200){
bool check_status=true;	int result=0;
ssize_t EOLat=0;	ssize_t EOLat=0;
while(true) {	while(true) {
char buf=(char )response.pool().malloc(MAX_STRING);	char *buf=new(PointerFreeGC) char[MAX_STRING];
ssize_t size=recv(sock, buf, MAX_STRING, 0);	ssize_t size=recv(sock, buf, MAX_STRING, 0);
if(size<=0)	if(size<=0)
break;	break;
response.APPEND_TAINTED(buf, size, "remote HTTP server response", 0);	response.APPEND_TAINTED(buf, size, "remote HTTP server response", 0);
if(check_status && (EOLat=response.pos("\r\n", 2))>=0) { // checking status in first response	if(!result && (EOLat=response.pos("\r\n", 2))>=0) { // checking status in first response
check_status=false;

const String& status_line=response.mid(0, (size_t)EOLat);	const String& status_line=response.mid(0, (size_t)EOLat);
Array astatus(response.pool());	ArrayString astatus;
size_t pos_after_ref=0; status_line.split(astatus, &pos_after_ref, " ", 1);	status_line->split(astatus, 0, " ", 1);
const String* status_code=astatus.get_string(1);	const String& status_code=astatus.get(1);
	result=status_code->as_int();

if(!status_code \|\| *status_code!="200")	if(fail_on_status_ne_200 && result!=200)
throw Exception("http.status",	throw Exception("http.status",
status_code,	status_code,
"invalid HTTP response status");	"invalid HTTP response status");
}	}
}	}
if(check_status)	if(result)
	return result;
	else
throw Exception("http.response",	throw Exception("http.response",
0,	0,
"bad response from host - no status found (size=%lu)", response.size());	"bad response from host - no status found (size=%lu)", response.length());
}	}

/* ******************** request ************************* */	/* ******************** request ************************* */
Line 168 static void timeout_handler(int sig){	Line 230 static void timeout_handler(int sig){
}	}
#endif	#endif

static void http_request(String& response,	static int http_request(
const String *origin_string,	String& response,
const char* host, int port,	const String* origin_string,
const char* request,	const char* host, int port,
int timeout){	const char* request,
	int timeout,
	bool fail_on_status_ne_200) {
if(!host)	if(!host)
throw Exception("http.host",	throw Exception("http.host",
origin_string,	origin_string,
Line 183 static void http_request(String& respons	Line 247 static void http_request(String& respons
#endif	#endif
int sock=-1;	int sock=-1;
try {	try {
	int result;
#ifdef WE_CAN_USE_ALARM	#ifdef WE_CAN_USE_ALARM
if(sigsetjmp(timeout_env, 1))	if(sigsetjmp(timeout_env, 1))
throw Exception("http.timeout",	throw Exception("http.timeout",
Line 212 static void http_request(String& respons	Line 277 static void http_request(String& respons
origin_string,	origin_string,
"error sending request: %s (%d)", strerror(errno), errno);	"error sending request: %s (%d)", strerror(errno), errno);

http_read_response(response, sock);	result=http_read_response(response, sock, fail_on_status_ne_200);
if(sock>=0)	closesocket(sock);
closesocket(sock);
#ifdef WE_CAN_USE_ALARM	#ifdef WE_CAN_USE_ALARM
	alarm(0);
}	}
#endif	#endif
	return result;
} catch(...) {	} catch(...) {
if(sock>=0)	if(sock>=0)
closesocket(sock);	closesocket(sock);
#ifdef WE_CAN_USE_ALARM	#ifdef WE_CAN_USE_ALARM
alarm(0);	alarm(0);
#endif	#endif
/re/throw;	rethrow;
}	}
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
struct Http_pass_header_info {	struct Http_pass_header_info {
	;
	Charset* charset;
String* request;	String* request;
bool user_agent_specified;	bool user_agent_specified;
};	};
#endif	#endif
static void http_pass_header(const Hash::Key& key, Hash::Val value, void info)	static void http_pass_header(HashStringValue::key_type key, HashStringValue::value_type value,
{	Http_pass_header_info *info) {
Http_pass_header_info& i=static_cast<Http_pass_header_info >(info);	(info->request)<<key<<": "
Pool& pool=i.request->pool();	<< attributed_meaning_to_string(info->value, String::UL_HTTP_HEADER, false)

*(i.request)<<key<<": "
<< attributed_meaning_to_string(static_cast<Value >(value), String::UL_HTTP_HEADER, false)
<<"\n";	<<"\n";

if(key.change_case(pool, String::CC_UPPER)=="USER-AGENT")	if(key->change_case(info->*info->charset, String::CC_UPPER)=="USER-AGENT")
i.user_agent_specified=true;	info->user_agent_specified=true;
}	}
static void file_read_http(Pool& pool, const String& file_spec,	#ifndef DOXYGEN
void*& data, size_t& data_size,	struct File_read_http_result {
Hash options=0, Hash* out_fields=0) {	char *data; size_t size;
	HashStringValue* headers;
	};
	#endif
	static File_read_http_result file_read_httpCharset& charset, const String& file_spec,
	HashStringValue *options=0) {
	File_read_http_result result;
char host[MAX_STRING];	char host[MAX_STRING];
const char* uri;	const char* uri;
int port;	int port;
const char* method="GET";	const char* method(0);
int timeout=2;	int timeout=2;
Value *vheaders=0;	bool fail_on_status_ne_200=true;
	ValuePtr vheaders(0);

String connect_string(pool);	const String& connect_string(new String());
// not in ^sql{... UL_SQL ...} spirit, but closer to ^file::load one	// not in ^sql{... UL_SQL ...} spirit, but closer to ^file::load one
connect_string.append(file_spec, String::UL_URI); // tainted pieces -> URI pieces	connect_string->append(*file_spec, String::UL_URI); // tainted pieces -> URI pieces

char* connect_string_cstr=connect_string.cstr(String::UL_UNSPECIFIED);	const char* connect_string_cstr=connect_string->cstr(String::UL_UNSPECIFIED);
if(strncmp(connect_string_cstr, "http://", 7)!=0)	const char* current=connect_string_cstr;
	if(strncmp(current, "http://", 7)!=0)
throw Exception(0,	throw Exception(0,
&connect_string,	connect_string,
"does not start with http://"); //never	"does not start with http://"); //never
connect_string_cstr+=7;	current+=7;

strncpy(host, connect_string_cstr, sizeof(host)-1); host[sizeof(host)-1]=0;	strncpy(host, current, sizeof(host)-1); host[sizeof(host)-1]=0;
char* host_uri=lsplit(host, '/');	char* host_uri=lsplit(host, '/');
uri=host_uri?connect_string_cstr+(host_uri-1-host):"/";	uri=host_uri?current+(host_uri-1-host):"/";
char* port_cstr=lsplit(host, ':');	char* port_cstr=lsplit(host, ':');
char* error_pos=0;	char* error_pos=0;
port=port_cstr?strtol(port_cstr, &error_pos, 0):80;	port=port_cstr?strtol(port_cstr, &error_pos, 0):80;

if(options) {	if(options) {
int valid_options=0;	int valid_options=0;
if(Value vmethod=static_cast<Value >(options->get(*http_method_name))) {	if(ValuePtr vmethod=options->get(http_method_name)) {
valid_options++;	valid_options++;
method=vmethod->as_string().cstr();	method=vmethod->as_string(&pool)->cstr();
}	}
if(Value vtimeout=static_cast<Value >(options->get(*http_timeout_name))) {	if(ValuePtr vtimeout=options->get(http_timeout_name)) {
valid_options++;	valid_options++;
timeout=vtimeout->as_int();	timeout=vtimeout->as_int();
}	}
if(vheaders=static_cast<Value >(options->get(http_headers_name))) {	if(vheaders=options->get(http_headers_name)) {
valid_options++;	valid_options++;
}	}
if(valid_options!=options->size())	if(ValuePtr vany_status=options->get(http_any_status_name)) {
	valid_options++;
	fail_on_status_ne_200=!vany_status->as_bool();
	}

	if(valid_options!=options->count())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	0,
"invalid option passed");	"invalid option passed");
}	}

//making request	//making request
String request(pool);	String request;
request<< method <<" "<< uri <<" HTTP/1.0\nHost: "<< host<<"\n";	if(method)
	request<<method;
	else
	request<<"GET";
	request<< " "<< uri <<" HTTP/1.0\nHost: "<< host<<"\n";
bool user_agent_specified=false;	bool user_agent_specified=false;
if(vheaders && !vheaders->is_string()) { // allow empty	if(vheaders && !vheaders->is_string()) { // allow empty
if(Hash *headers=vheaders->get_hash(&connect_string)) {	if(HashStringValue *headers=vheaders->get_hash(connect_string)) {
Http_pass_header_info info={&request};	Http_pass_header_info info={&&charset, &request};
headers->for_each(http_pass_header, &info);	headers->for_each(http_pass_header, &info);
user_agent_specified=info.user_agent_specified;	user_agent_specified=info.user_agent_specified;
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&connect_string,	connect_string,
"headers param must be hash");	"headers param must be hash");
};	};
if(!user_agent_specified) // defaulting	if(!user_agent_specified) // defaulting
Line 312 static void file_read_http(Pool& pool, c	Line 394 static void file_read_http(Pool& pool, c
request<<"\n";	request<<"\n";

//sending request	//sending request
String response(pool);	String response;
http_request(response,	const char* request_cstr=request.cstr(String::UL_UNSPECIFIED);
&connect_string, host, port, request.cstr(String::UL_UNSPECIFIED), timeout);	int status_code=http_request(response,
	connect_string, host, port, request_cstr,
	timeout, fail_on_status_ne_200);

//processing results	//processing results
int pos=response.pos("\r\n\r\n", 4);	int pos=response.pos("\r\n\r\n", 4);
if(pos<1){	if(pos<1){
throw Exception("http.response",	throw Exception("http.response",
&connect_string,	connect_string,
"bad response from host - no headers found");	"bad response from host - no headers found");
}	}
String header_block=response.mid(0, pos);	const String& header_block=response.mid(0, pos);
String body=response.mid(pos+4, response.size());	const String& body=response.mid(pos+4, response.length());

Array aheaders(pool);	ArrayString aheaders;
Hash& headers=*new(pool) Hash(pool);	result.headers=HashStringValue* (new HashStringValue);
size_t pos_after_ref=0;	header_block->split(aheaders, 0, "\r\n", 2);
header_block.split(aheaders, &pos_after_ref, "\r\n", 2);

//processing status code
const String *status_line=aheaders.get_string(0);
if(!status_line){
throw Exception("http.response",
&connect_string,
"bad response from host - no status line ");
}
//processing headers	//processing headers
for(int i=1;i<aheaders.size();i++) {	for(int i=1; i<aheaders.count(); i++) {
if(const String *line=aheaders.get_string(i)) {	const String& line=aheaders.get(i);
pos=line->pos(": ", 2);	pos=line->pos(": ", 2);
if(pos<1)	if(pos<1)
throw Exception("http.response",
&connect_string,
"bad response from host - bad header \"%s\"", line->cstr());

headers.put(
line->mid(0, pos).change_case(pool, String::CC_UPPER),
new(pool) VString(line->mid(pos+2, line->size())));
} else
throw Exception("http.response",	throw Exception("http.response",
&connect_string,	connect_string,
"bad response from host - bad headers \"%s\"", header_block.cstr());	"bad response from host - bad header \"%s\"", line->cstr().get());

	result.headers->put(
	line->mid(0, pos)->change_case(charset, String::CC_UPPER),
	ValuePtr(new VString(line->mid(pos+2, line->length()))));
}	}

// output response	// output response
data=body.cstr(); data_size=body.size();	result.str=new(PointerFreeGC) char[1/as text puts terminating zero later/+(result.length=body->length())];
if(out_fields)	body->store_to(result.str, String::UL_AS_IS);
*out_fields=&headers;	result.headers->put(file_status_name, ValuePtr(new VInt(status_code)));
	return result;
}	}

	#endif

#ifndef DOXYGEN	#ifndef DOXYGEN
struct File_read_action_info {	struct File_read_action_info {
void *data; size_t data_size;	char *data; size_t data_size;
};	};
#endif	#endif
static void file_read_action(Pool& pool,	static void file_read_action(
struct stat& finfo,	struct stat& finfo,
int f,	int f,
const String& file_spec, const char* fname, bool as_text,	const String& file_spec, const char* fname, bool as_text,
void *context) {	void *context) {
File_read_action_info& info=static_cast<File_read_action_info >(context);	File_read_action_info& info=static_cast<File_read_action_info >(context);
if(size_t to_read_size=(size_t)finfo.st_size) {	if(size_t to_read_size=(size_t)finfo.st_size) {
*info.data=pool.malloc(to_read_size+(as_text?1:0), 3);	*info.data=new(PointerFreeGC) char[to_read_size+(as_text?1:0)];
info.data_size=(size_t)read(f, info.data, to_read_size);	info.data_size=(size_t)read(f, info.data, to_read_size);

if(ssize_t(info.data_size)<0 \|\| info.data_size>to_read_size)	if(ssize_t(info.data_size)<0 \|\| info.data_size>to_read_size)
Line 384 static void file_read_action(Pool& pool,	Line 459 static void file_read_action(Pool& pool,
*info.data_size, to_read_size);	*info.data_size, to_read_size);
} else { // empty file	} else { // empty file
if(as_text) {	if(as_text) {
*info.data=pool.malloc(1);	*info.data=new(PointerFreeGC) char[1];
(char)(*info.data)=0;	(char)(*info.data)=0;
} else	} else
*info.data=0;	*info.data=0;
Line 392 static void file_read_action(Pool& pool,	Line 467 static void file_read_action(Pool& pool,
return;	return;
}	}
}	}
bool file_read(Pool& pool, const String& file_spec,	File_read_result file_read(Charset& charset, const String& file_spec,
void*& data, size_t& data_size,	bool as_text, HashStringValue *params,
bool as_text, Hash params, Hash* out_fields,
bool fail_on_read_problem) {	bool fail_on_read_problem) {
bool result;	File_read_result result;
	#ifdef PA_HTTP
if(file_spec.starts_with("http://", 7)) {	if(file_spec.starts_with("http://", 7)) {
// fail on read problem	// fail on read problem
file_read_http(pool, file_spec, data, data_size, params, out_fields);	File_read_http_result http=file_read_http(charset, file_spec, params);
result=true;	result.success=true;
	result.str=http.data;
	result.length=http.size;
	result.headers=http.headers;
} else {	} else {
File_read_action_info info={&data, &data_size};	#endif
result=file_read_action_under_lock(pool, file_spec,	File_read_action_info info={&result.str, &result.length};
	result.success=file_read_action_under_lock(file_spec,
"read", file_read_action, &info,	"read", file_read_action, &info,
as_text, fail_on_read_problem);	as_text, fail_on_read_problem);
	#ifdef PA_HTTP
}	}
	#endif

if(result && as_text) {	if(result.success && as_text) {
// UTF-8 signature: EF BB BF	// UTF-8 signature: EF BB BF
if(data_size>=3) {	if(result.length>=3) {
char in=(char )data;	char in=(char )result.str;
if((in[0] == '\xEF') && (in[1] == '\xBB') &&	if((in[0] == '\xEF') && (in[1] == '\xBB') &&
(in[2] == '\xBF')) {	(in[2] == '\xBF')) {
data=in+3; data_size-=3;// skip prefix	result.str=in+3; result.length-=3;// skip prefix
}	}
}	}

fix_line_breaks((char *)(data), data_size);	fix_line_breaks((char *)(result.str), result.length);
// note: after fixing	// note: after fixing
((char*&)(data))[data_size]=0;	((char*&)(result.str))[result.length]=0;
}	}

return result;	return result;
}	}

bool file_read_action_under_lock(Pool& pool, const String& file_spec,	bool file_read_action_under_lock(const String& file_spec,
const char* action_name, File_read_action action, void *context,	const char* action_name, File_read_action action, void *context,
bool as_text,	bool as_text,
bool fail_on_read_problem) {	bool fail_on_read_problem) {
Line 448 bool file_read_action_under_lock(Pool& p	Line 529 bool file_read_action_under_lock(Pool& p
throw Exception("file.lock",	throw Exception("file.lock",
&file_spec,	&file_spec,
"shared lock failed: %s (%d), actual filename '%s'",	"shared lock failed: %s (%d), actual filename '%s'",
strerror(errno), errno, fname);	strerror(errno), errno, fname);

struct stat finfo;	struct stat finfo;
if(stat(fname, &finfo)!=0)	if(stat(fname, &finfo)!=0)
throw Exception("file.missing", // hardly possible: we just opened it OK	throw Exception("file.missing", // hardly possible: we just opened it OK
&file_spec,	&file_spec,
"stat failed: %s (%d), actual filename '%s'",	"stat failed: %s (%d), actual filename '%s'",
strerror(errno), errno, fname);	strerror(errno), errno, fname);

#ifdef NO_FOREIGN_GROUP_FILES	#ifdef PA_SAFE_MODE
if(finfo.st_gid/foreign?/!=getegid())	if(finfo.st_uid/foreign?/!=geteuid()
	&& finfo.st_gid/foreign?/!=getegid())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&file_spec,	&file_spec,
"parser reading files of foreign group disabled [recompile parser without --disable-foreign-group-files configure option], actual filename '%s'",	"parser is in safe mode: reading files of foreign group and user disabled [recompile parser with --disable-safe-mode configure option], actual filename '%s'",
fname);	fname);
#endif	#endif

action(pool, finfo, f, file_spec, fname, as_text, context);	action(finfo, f, file_spec, fname, as_text, context);
} catch(...) {	} catch(...) {
unlock(f);close(f);	unlock(f);close(f);
if(fail_on_read_problem)	if(fail_on_read_problem)
/re/throw;	rethrow;
return false;	return false;
}	}

Line 480 bool file_read_action_under_lock(Pool& p	Line 562 bool file_read_action_under_lock(Pool& p
throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,	throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
&file_spec,	&file_spec,
"%s failed: %s (%d), actual filename '%s'",	"%s failed: %s (%d), actual filename '%s'",
action_name, strerror(errno), errno, fname);	action_name, strerror(errno), errno, fname);
return false;	return false;
}	}
}	}
Line 488 bool file_read_action_under_lock(Pool& p	Line 570 bool file_read_action_under_lock(Pool& p
static void create_dir_for_file(const String& file_spec) {	static void create_dir_for_file(const String& file_spec) {
size_t pos_after=1;	size_t pos_after=1;
int pos_before;	int pos_before;
while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {	while((pos_before=file_spec.pos("/", pos_after))>=0) {
mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775);	mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775);
pos_after=pos_before+1;	pos_after=pos_before+1;
}	}
Line 509 bool file_write_action_under_lock(	Line 591 bool file_write_action_under_lock(
if((f=open(fname,	if((f=open(fname,
O_CREAT\|O_RDWR	O_CREAT\|O_RDWR
\|(as_text?_O_TEXT:_O_BINARY)	\|(as_text?_O_TEXT:_O_BINARY)
\|(do_append?O_APPEND:0), 0664))>=0) {	\|(do_append?O_APPEND:PA_O_TRUNC), 0664))>=0) {
if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) {	if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) {
Exception e("file.lock",	Exception e("file.lock",
&file_spec,	&file_spec,
"shared lock failed: %s (%d), actual filename '%s'",	"shared lock failed: %s (%d), actual filename '%s'",
strerror(errno), errno, fname);	strerror(errno), errno, fname);
close(f);	close(f);
if(fail_on_lock_problem)	if(fail_on_lock_problem)
throw e;	throw e;
Line 524 bool file_write_action_under_lock(	Line 606 bool file_write_action_under_lock(
try {	try {
action(f, context);	action(f, context);
} catch(...) {	} catch(...) {
	#ifdef HAVE_FTRUNCATE
if(!do_append)	if(!do_append)
ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower	ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower
	#endif
unlock(f);close(f);	unlock(f);close(f);
/re/throw;	rethrow;
}	}

	#ifdef HAVE_FTRUNCATE
if(!do_append)	if(!do_append)
ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov <virtan@rotabanner.com> for discovering]	ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov <virtan@rotabanner.com> for discovering]
	#endif
unlock(f);close(f);	unlock(f);close(f);
return true;	return true;
} else	} else
throw Exception(errno==EACCES?"file.access":0,	throw Exception(errno==EACCES?"file.access":0,
&file_spec,	&file_spec,
"%s failed: %s (%d), actual filename '%s'",	"%s failed: %s (%d), actual filename '%s'",
action_name, strerror(errno), errno, fname);	action_name, strerror(errno), errno, fname);
// here should be nothing, see rethrow above	// here should be nothing, see rethrow above
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
struct File_write_action_info {	struct File_write_action_info {
const void *data; size_t size;	const char* str; size_t length;
};	};
#endif	#endif
static void file_write_action(int f, void *context) {	static void file_write_action(int f, void *context) {
File_write_action_info& info=static_cast<File_write_action_info >(context);	File_write_action_info& info=static_cast<File_write_action_info >(context);
if(info.size) {	if(info.length) {
int written=write(f, info.data, info.size);	int written=write(f, info.str, info.length);
if(written<0)	if(written<0)
throw Exception(0,	throw Exception(0,
0,	0,
Line 559 static void file_write_action(int f, voi	Line 645 static void file_write_action(int f, voi
}	}
void file_write(	void file_write(
const String& file_spec,	const String& file_spec,
const void *data, size_t size,	const char* data, size_t size,
bool as_text,	bool as_text,
bool do_append) {	bool do_append) {
File_write_action_info info={data, size};	File_write_action_info info={data, size};
file_write_action_under_lock(	file_write_action_under_lock(
file_spec,	file_spec,
"write", file_write_action, &info,	"write", file_write_action, &info,
as_text,	as_text,
do_append);	do_append);
}	}

// throws nothing! [this is required in file_move & file_delete]	// throws nothing! [this is required in file_move & file_delete]
static void rmdir(const String& file_spec, size_t pos_after) {	static void rmdir(const String& file_spec, size_t pos_after) {
int pos_before;	int pos_before;
if((pos_before=file_spec.pos("/", 1, pos_after))>=0)	if((pos_before=file_spec.pos("/", pos_after))>=0)
rmdir(file_spec, pos_before+1);	rmdir(file_spec, pos_before+1);

rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC));	rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC));
Line 585 bool file_delete(const String& file_spec	Line 671 bool file_delete(const String& file_spec
throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,	throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
&file_spec,	&file_spec,
"unlink failed: %s (%d), actual filename '%s'",	"unlink failed: %s (%d), actual filename '%s'",
strerror(errno), errno, fname);	strerror(errno), errno, fname);
else	else
return false;	return false;

Line 602 void file_move(const String& old_spec, c	Line 688 void file_move(const String& old_spec, c
throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,	throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
&old_spec,	&old_spec,
"rename failed: %s (%d), actual filename '%s' to '%s'",	"rename failed: %s (%d), actual filename '%s' to '%s'",
strerror(errno), errno, old_spec_cstr, new_spec_cstr);	strerror(errno), errno, old_spec_cstr, new_spec_cstr);

rmdir(old_spec, 1);	rmdir(old_spec, 1);
}	}
Line 622 bool entry_exists(const String& file_spe	Line 708 bool entry_exists(const String& file_spe
}	}

static bool entry_readable(const String& file_spec, bool need_dir) {	static bool entry_readable(const String& file_spec, bool need_dir) {
char* fname=file_spec.cstr(String::UL_FILE_SPEC);	char* fname=file_spec.cstrm(String::UL_FILE_SPEC);
if(need_dir) {	if(need_dir) {
size_t size=strlen(fname);	size_t size=strlen(fname);
while(size) {	while(size) {
Line 646 bool file_readable(const String& file_sp	Line 732 bool file_readable(const String& file_sp
bool dir_readable(const String& file_spec) {	bool dir_readable(const String& file_spec) {
return entry_readable(file_spec, true);	return entry_readable(file_spec, true);
}	}
String *file_readable(const String& path, const String& name) {	const String* file_readable(String& path, String& name) {
String *result=new(path.pool()) String(path);	String& result=*new String(path);
*result << "/";	result << "/";
*result << name;	result << name;
return file_readable(*result)?result:0;	return file_readable(result)?&result:0;
}	}
bool file_executable(const String& file_spec) {	bool file_executable(const String& file_spec) {
return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0;	return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0;
Line 662 bool file_stat(const String& file_spec,	Line 748 bool file_stat(const String& file_spec,
time_t& rmtime,	time_t& rmtime,
time_t& rctime,	time_t& rctime,
bool fail_on_read_problem) {	bool fail_on_read_problem) {
Pool& pool=file_spec.pool();
const char* fname=file_spec.cstr(String::UL_FILE_SPEC);	const char* fname=file_spec.cstr(String::UL_FILE_SPEC);
struct stat finfo;	struct stat finfo;
if(stat(fname, &finfo)!=0)	if(stat(fname, &finfo)!=0)
Line 670 bool file_stat(const String& file_spec,	Line 755 bool file_stat(const String& file_spec,
throw Exception("file.missing",	throw Exception("file.missing",
&file_spec,	&file_spec,
"getting file size failed: %s (%d), real filename '%s'",	"getting file size failed: %s (%d), real filename '%s'",
strerror(errno), errno, fname);	strerror(errno), errno, fname);
else	else
return false;	return false;
rsize=finfo.st_size;	rsize=finfo.st_size;
Line 722 char* rsplit(char* string, char delim) {	Line 807 char* rsplit(char* string, char delim) {
}	}

/// @todo less stupid type detection	/// @todo less stupid type detection
char* format(Pool& pool, double value, char* fmt) {	const char* format(double value, char* fmt) {
char local_buf[MAX_NUMBER];	char local_buf[MAX_NUMBER];
size_t size;	size_t size;

Line 737 char* format(Pool& pool, double value, c	Line 822 char* format(Pool& pool, double value, c
else	else
size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value);	size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value);

char* pool_buf=(char *)pool.malloc(size+1, 4);	return pa_strdup(local_buf, size);
memcpy(pool_buf, local_buf, size+1);
return pool_buf;
}	}

size_t stdout_write(const void *buf, size_t size) {	size_t stdout_write(const void *buf, size_t size) {
#ifdef WIN32	#ifdef WIN32
do{	do{
int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);	int chunk_written=fwrite(buf, 1, min((size_t)8*0x400, size), stdout);
if(chunk_written<=0)	if(chunk_written<=0)
break;	break;
size-=chunk_written;	size-=chunk_written;
Line 758 size_t stdout_write(const void *buf, siz	Line 841 size_t stdout_write(const void *buf, siz
#endif	#endif
}	}

char* unescape_chars(Pool& pool, const char* cp, int len) {	char* unescape_chars(const char* cp, int len) {
char* s=(char *)pool.malloc(len + 1, 5);	char* s=new(PointerFreeGC) char[len + 1];
enum EscapeState {	enum EscapeState {
EscapeRest,	EscapeRest,
EscapeFirst,	EscapeFirst,
Line 880 int __vsnprintf(char* b, size_t s, const	Line 963 int __vsnprintf(char* b, size_t s, const
win32:	win32:
mk:@MSITStore:C:\Program%20Files\Microsoft%20Visual%20Studio\MSDN\2001APR\1033\vccore.chm::/html/_crt__vsnprintf.2c_._vsnwprintf.htm	mk:@MSITStore:C:\Program%20Files\Microsoft%20Visual%20Studio\MSDN\2001APR\1033\vccore.chm::/html/_crt__vsnprintf.2c_._vsnwprintf.htm

if the number of bytes to write exceeds buffer, then count bytes are written and �1 is returned	if the number of bytes to write exceeds buffer, then count bytes are written and �1 is returned
*/	*/
r=_vsnprintf(b, s, f, l);	r=_vsnprintf(b, s, f, l);
if(r<0)	if(r<0)
Line 930 int pa_sleep(unsigned long secs, unsigne	Line 1013 int pa_sleep(unsigned long secs, unsigne
}	}


// attributed meaning

static size_t date_attribute(const VDate& vdate, char *buf, size_t buf_size) {
const char month_names[12][4]={
"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
const char days[7][4]={
"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};

time_t when=vdate.get_time();
struct tm *tms=gmtime(&when);
if(!tms)
throw Exception(0,
0,
"bad time in attribute value (seconds from epoch=%ld)", when);
return snprintf(buf, MAX_STRING, "%s, %.2d-%s-%.4d %.2d:%.2d:%.2d GMT",
days[tms->tm_wday],
tms->tm_mday,month_names[tms->tm_mon],tms->tm_year+1900,
tms->tm_hour,tms->tm_min,tms->tm_sec);
}
static void append_attribute_meaning(String& result,
Value& value, String::Untaint_lang lang, bool forced) {
if(const String *string=value.get_string())
result.append(string->join_chains(result.pool(), 0), lang, forced);
else
if(Value *vdate=value.as(VDATE_TYPE, false)) {
char buf=(char )result.malloc(MAX_STRING);
size_t size=date_attribute(static_cast<VDate >(vdate),
buf, MAX_STRING);

result.APPEND_CLEAN(buf, size, "converted from date", 0);
} else
throw Exception("parser.runtime",
&result,
"trying to append here neither string nor date (%s)",
value.type());
}
#ifndef DOXYGEN
struct Attributed_meaning_info {
String *header; // header line being constructed
String::Untaint_lang lang; // language in which to append to that line
bool forced; // do they force that lang?
};
#endif
static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
void *info) {
if(akey==VALUE_NAME)
return;

Attributed_meaning_info& ami=static_cast<Attributed_meaning_info >(info);

// ...; charset=windows1251
*ami.header << "; ";
ami.header->append(akey, ami.lang, ami.forced);
*ami.header << "=";
append_attribute_meaning(ami.header, static_cast<Value *>(avalue), ami.lang, ami.forced);
}
const String& attributed_meaning_to_string(Value& meaning,
String::Untaint_lang lang, bool forced) {
String &result=*new(meaning.pool()) String(meaning.pool());
if(Hash *hash=meaning.get_hash(0)) {
// $value(value) $subattribute(subattribute value)
if(Value value=static_cast<Value >(hash->get(*value_name)))
append_attribute_meaning(result, *value, lang, forced);

Attributed_meaning_info attributed_meaning_info={&result, lang};
hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
} else // result value
append_attribute_meaning(result, meaning, lang, forced);

return result;
}

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Removed from v.1.137
changed lines
	Added in v.1.143.2.21.2.7