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| version 1.43, 2001/04/10 07:40:50 | version 1.126, 2002/11/25 14:10:52 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: commonly functions. | Parser: commonly functions. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "pa_config_includes.h" | static const char* IDENT_COMMON_C="$Date$"; |
| #include <fcntl.h> | |
| #include <sys/stat.h> | |
| #include <io.h> | |
| #include <stdio.h> | |
| #include <errno.h> | |
| #include <ctype.h> | |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_types.h" | |
| #include "pa_exception.h" | #include "pa_exception.h" |
| #include "pa_pool.h" | |
| #include "pa_globals.h" | #include "pa_globals.h" |
| #include "pa_value.h" | |
| #include "pa_hash.h" | #include "pa_hash.h" |
| #include "pa_string.h" | #include "pa_vstring.h" |
| #if _MSC_VER | #ifdef WIN32 |
| # include <windows.h> | |
| #else | |
| # define closesocket close | |
| #endif | |
| int __vsnprintf(char *b, size_t s, const char *f, va_list l) { | // some maybe-undefined constants |
| int r=_vsnprintf(b, --s, f, l); | |
| b[s]=0; | #ifndef _O_TEXT |
| return r; | # define _O_TEXT 0 |
| #endif | |
| #ifndef _O_BINARY | |
| # define _O_BINARY 0 | |
| #endif | |
| // locking constants | |
| #ifdef HAVE_FLOCK | |
| static int lock_shared_blocking(int fd) { return flock(fd, LOCK_SH); } | |
| static int lock_exclusive_blocking(int fd) { return flock(fd, LOCK_EX); } | |
| static int lock_exclusive_nonblocking(int fd) { return flock(fd, LOCK_EX || LOCK_NB); } | |
| static int unlock(int fd) { return flock(fd, LOCK_UN); } | |
| #else | |
| #ifdef HAVE__LOCKING | |
| #define FLOCK(operation) lseek(fd, 0, SEEK_SET); return _locking(fd, operation, 1) | |
| static int lock_shared_blocking(int fd) { FLOCK(_LK_LOCK); } | |
| static int lock_exclusive_blocking(int fd) { FLOCK(_LK_LOCK); } | |
| static int lock_exclusive_nonblocking(int fd) { FLOCK(_LK_NBLCK); } | |
| static int unlock(int fd) { FLOCK(_LK_UNLCK); } | |
| #else | |
| #ifdef HAVE_FCNTL | |
| #define FLOCK(cmd, arg) struct flock ls={arg, SEEK_SET}; return fcntl(fd, cmd, &ls) | |
| static int lock_shared_blocking(int fd) { FLOCK(F_SETLKW, F_RDLCK); } | |
| static int lock_exclusive_blocking(int fd) { FLOCK(F_SETLKW, F_WRLCK); } | |
| static int lock_exclusive_nonblocking(int fd) { FLOCK(F_SETLK, F_RDLCK); } | |
| static int unlock(int fd) { FLOCK(F_SETLK, F_UNLCK); } | |
| #else | |
| #ifdef HAVE_LOCKF | |
| #define FLOCK(fd, operation) lseek(fd, 0, SEEK_SET); return lockf(fd, operation, 1) | |
| static int lock_shared_blocking(int fd) { FLOCK(F_LOCK); } // on intel solaris man doesn't have doc on shared blocking | |
| static int lock_exclusive_blocking(int fd) { FLOCK(F_LOCK); } | |
| static int lock_exclusive_nonblocking(int fd) { FLOCK(F_TLOCK); } | |
| static int unlock(int fd) { FLOCK(F_TLOCK); } | |
| #else | |
| #error unable to find file locking func | |
| #endif | |
| #endif | |
| #endif | |
| #endif | |
| static char* strnchr(char* buf, size_t size, char c) { | |
| // sanity check | |
| if(!buf) | |
| return 0; | |
| for(; size-->0; buf++) { | |
| if(*buf==c) | |
| return buf; | |
| } | |
| return 0; | |
| } | } |
| int __snprintf(char *b, size_t s, const char *f, ...) { | |
| va_list l; | void fix_line_breaks(char* buf, size_t& size) { |
| va_start(l, f); | //_asm int 3; |
| int r=__vsnprintf(b, s, f, l); | const char* const eob=buf+size; |
| va_end(l); | char* dest=buf; |
| return r; | // fix DOS: \r\n -> \n |
| // fix Macintosh: \r -> \n | |
| char* bol=buf; | |
| while(char* eol=strnchr(bol, eob -bol, '\r')) { | |
| size_t len=eol-bol; | |
| if(dest!=bol) | |
| memcpy(dest, bol, len); | |
| dest+=len; | |
| *dest++='\n'; | |
| if(&eol[1]<eob && eol[1]=='\n') { // \r, \n = DOS | |
| bol=eol+2; | |
| size--; | |
| } else // \r, not \n = Macintosh | |
| bol=eol+1; | |
| } | |
| // last piece without \r, including terminating 0 | |
| if(dest!=bol) | |
| memcpy(dest, bol, eob-bol); | |
| } | |
| char* file_read_text(Pool& pool, const String& file_spec, | |
| bool fail_on_read_problem, | |
| Hash *params, Hash** out_fields) { | |
| void *result; size_t size; | |
| return file_read(pool, file_spec, result, size, true, params, out_fields, fail_on_read_problem)?(char *)result:0; | |
| } | |
| //http request stuff | |
| /* ************************ http stuff *********************** */ | |
| static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){ | |
| memset(addr, 0, sizeof(*addr)); | |
| addr->sin_family=AF_INET; | |
| addr->sin_port=htons(port); | |
| if(host) { | |
| if(struct hostent *hostIP=gethostbyname(host)) | |
| memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length); | |
| else | |
| return false; | |
| } else | |
| addr->sin_addr.s_addr=INADDR_ANY; | |
| return true; | |
| } | |
| static void http_read_response(String& response, int sock){ | |
| while(true) { | |
| char *buf=(char *)response.pool().malloc(MAX_STRING); | |
| ssize_t size=recv(sock, buf, MAX_STRING, 0); | |
| if(size<=0) | |
| break; | |
| response.APPEND_TAINTED(buf, size, "http response", 0); | |
| } | |
| } | } |
| /* ********************** request *************************** */ | |
| #if defined(SIGALRM) && defined(HAVE_SIGSETJMP) && defined(HAVE_SIGLONGJMP) | |
| # define WE_CAN_USE_ALARM | |
| #endif | |
| #ifdef WE_CAN_USE_ALARM | |
| static sigjmp_buf timeout_env; | |
| static void timeout_handler(int sig){ | |
| siglongjmp(timeout_env, 1); | |
| } | |
| #endif | #endif |
| static void http_request(String& response, | |
| const String *origin_string, | |
| const char* host, int port, | |
| const char* request, | |
| int timeout){ | |
| if(!host) | |
| throw Exception("http.host", | |
| origin_string, | |
| "zero hostname"); //never | |
| char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) { | #ifdef WE_CAN_USE_ALARM |
| void *result; | signal(SIGALRM, timeout_handler); |
| size_t size; | #endif |
| return file_read(pool, file_spec, result, size, true, | int sock=-1; |
| fail_on_read_problem)?(char *)result:0; | try { |
| #ifdef WE_CAN_USE_ALARM | |
| if(sigsetjmp(timeout_env, 1)) | |
| throw Exception("http.timeout", | |
| origin_string, | |
| "timeout occured while retrieving document"); | |
| else { | |
| alarm(timeout); | |
| #endif | |
| struct sockaddr_in dest; | |
| if(!set_addr(&dest, host, port)) | |
| throw Exception("http.host", | |
| origin_string, | |
| "can't resolve hostname \"%s\"", host); | |
| if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) | |
| throw Exception("http.connect", | |
| origin_string, | |
| "can't make socket : %s (%d)", strerror(errno), errno); | |
| if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) | |
| throw Exception("http.connect", | |
| origin_string, | |
| "can't connect to host \"%s\": %s (%d)", host, strerror(errno), errno); | |
| size_t request_size=strlen(request); | |
| if(send(sock, request, request_size, 0)!=(ssize_t)request_size) | |
| throw Exception("http.connect", | |
| origin_string, | |
| "error sending request : %s (%d)", strerror(errno), errno); | |
| http_read_response(response, sock); | |
| if(sock>=0) | |
| closesocket(sock); | |
| #ifdef WE_CAN_USE_ALARM | |
| } | |
| #endif | |
| } catch(...) { | |
| if(sock>=0) | |
| closesocket(sock); | |
| #ifdef WE_CAN_USE_ALARM | |
| alarm(0); | |
| #endif | |
| /*re*/throw; | |
| } | |
| } | |
| static void headers_foreacher(const Hash::Key& key, Hash::Val *value, void *info) | |
| { | |
| String * request=static_cast<String *>(info); | |
| *(request)<<key<<": "<<*(static_cast<Value *>(value))->get_string()<<"\n"; | |
| } | |
| static void file_read_http(Pool& pool, const String& file_spec, | |
| void*& data, size_t& data_size, | |
| Hash *params=0, Hash** out_fields=0) { | |
| char host[MAX_STRING]; | |
| char* uri; | |
| int port; | |
| const char* method="GET"; | |
| int timeout=2; | |
| char* connect_string=file_spec.cstr(String::UL_UNSPECIFIED); | |
| if(strncmp(connect_string, "http://", 7)!=0) | |
| throw Exception(0, | |
| &file_spec, | |
| "does not start with http://"); //never | |
| connect_string+=7; | |
| strncpy(host, connect_string, sizeof(host)-1); host[sizeof(host)-1]=0; | |
| char* host_uri=lsplit(host, '/'); | |
| uri=host_uri?connect_string+(host_uri-1-host):"/"; | |
| char* port_cstr=lsplit(host, ':'); | |
| char* error_pos=0; | |
| port=port_cstr?strtol(port_cstr, &error_pos, 0):80; | |
| if(params) { | |
| if(Value *method_element=static_cast<Value *>(params->get(*http_method_name))) | |
| method=method_element->as_string().cstr(); | |
| if(Value *timeout_element=static_cast<Value *>(params->get(*http_timeout_name))) | |
| timeout=timeout_element->as_int(); | |
| } | |
| //making request | |
| String request(pool); | |
| request<< method <<" "<< uri <<" HTTP/1.0\nHost: "<< host<<"\n"; | |
| if(params) | |
| if(Value *headers_element=static_cast<Value *>(params->get(*http_headers_name))) | |
| { | |
| Hash *headers=headers_element->get_hash(&file_spec); | |
| headers->for_each(headers_foreacher, &request); | |
| } | |
| request<<"\n"; | |
| //sending request | |
| String response(pool); | |
| http_request(response, | |
| &file_spec, host, port, request.cstr(String::UL_UNSPECIFIED), timeout); | |
| //processing results | |
| int pos=response.pos("\r\n\r\n", 4); | |
| if(pos<1){ | |
| throw Exception("http.response", | |
| &file_spec, | |
| "bad response from host - no headers found"); | |
| } | |
| String header_block=response.mid(0, pos); | |
| String body=response.mid(pos+4, response.size()); | |
| Array aheaders(pool); | |
| Hash& headers=*new(pool) Hash(pool); | |
| size_t pos_after_ref=0; | |
| 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", | |
| &file_spec, | |
| "bad response from host - no status line "); | |
| } | |
| //processing headers | |
| Array astatus(pool); | |
| pos_after_ref=0; | |
| status_line->split(astatus, &pos_after_ref, " ", 1); | |
| const String * status_code=astatus.get_string(1); | |
| for(int i=1;i<aheaders.size();i++) { | |
| if(const String *line=aheaders.get_string(i)) { | |
| pos=line->pos(": ", 2); | |
| if(pos<1) | |
| throw Exception("http.response", | |
| &file_spec, | |
| "bad response from host - bad header \"%s\"", line->cstr()); | |
| headers.put(line->mid(0, pos), new(pool) VString(line->mid(pos+2, line->size()))); | |
| } else | |
| throw Exception("http.response", | |
| &file_spec, | |
| "bad response from host - bad headers \"%s\"", header_block.cstr()); | |
| } | |
| // output response | |
| data=body.cstr(); data_size=body.size(); | |
| if(out_fields) { | |
| headers.put(*file_status_name, new(pool) VString(*status_code)); | |
| *out_fields=&headers; | |
| } | |
| } | |
| #ifndef DOXYGEN | |
| struct File_read_action_info { | |
| void **data; size_t *data_size; | |
| }; | |
| #endif | |
| static void file_read_action(Pool& pool, | |
| struct stat& finfo, | |
| int f, | |
| const String& file_spec, const char* fname, bool as_text, | |
| void *context) { | |
| File_read_action_info& info=*static_cast<File_read_action_info *>(context); | |
| 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_size=(size_t)read(f, *info.data, to_read_size); | |
| if(ssize_t(*info.data_size)<0 || *info.data_size>to_read_size) | |
| throw Exception(0, | |
| &file_spec, | |
| "read failed: actually read %lu bytes count not in [0..%lu] valid range", | |
| *info.data_size, to_read_size); | |
| } else { // empty file | |
| if(as_text) { | |
| *info.data=pool.malloc(1); | |
| *(char*)(*info.data)=0; | |
| } else | |
| *info.data=0; | |
| *info.data_size=0; | |
| return; | |
| } | |
| } | } |
| bool file_read(Pool& pool, const String& file_spec, | bool file_read(Pool& pool, const String& file_spec, |
| void*& data, size_t& size, bool as_text, | void*& data, size_t& data_size, |
| bool as_text, Hash *params, Hash** out_fields, | |
| bool fail_on_read_problem) { | bool fail_on_read_problem) { |
| char *fname=file_spec.cstr(String::UL_FILE_NAME); | bool result; |
| if(file_spec.starts_with("http://", 7)) { | |
| // fail on read problem | |
| file_read_http(pool, file_spec, data, data_size, params, out_fields); | |
| result=true; | |
| } else { | |
| File_read_action_info info={&data, &data_size}; | |
| result=file_read_action_under_lock(pool, file_spec, | |
| "read", file_read_action, &info, | |
| as_text, fail_on_read_problem); | |
| } | |
| if(result && as_text) { | |
| fix_line_breaks((char *)(data), data_size); | |
| // note: after fixing | |
| ((char*&)(data))[data_size]=0; | |
| } | |
| return result; | |
| } | |
| bool file_read_action_under_lock(Pool& pool, const String& file_spec, | |
| const char* action_name, File_read_action action, void *context, | |
| bool as_text, | |
| bool fail_on_read_problem) { | |
| const char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| int f; | int f; |
| struct stat finfo; | |
| // first open, next stat: | // first open, next stat: |
| // directory update of NTFS symbolic links performed on open. | // directory update of NTFS hard links performed on open. |
| // ex: | // ex: |
| // a.html:^test[] and b.html hardlink to a.html | // a.html:^test[] and b.html hardlink to a.html |
| // user inserts ! before ^test in a.html | // user inserts ! before ^test in a.html |
| // directory entry of b.html in NTFS not updated at once, | // directory entry of b.html in NTFS not updated at once, |
| // they delay update till open, so we would receive "!^test[" string | // they delay update till open, so we would receive "!^test[" string |
| // if would do stat, next open. | // if would do stat, next open. |
| if( | // later: it seems, even this does not help sometimes |
| (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 && | if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) { |
| stat(fname, &finfo)==0) { | try { |
| /*if(exclusive) | if(lock_shared_blocking(f)!=0) |
| flock(f, LOCK_EX);*/ | throw Exception("file.lock", |
| data=pool.malloc(finfo.st_size+(as_text?1:0)); | &file_spec, |
| size=read(f, data, finfo.st_size); | "shared lock failed: %s (%d), actual filename '%s'", |
| /*if(exclusive) | strerror(errno), errno, fname); |
| flock(f, LOCK_UN);*/ | |
| close(f); | struct stat finfo; |
| if(stat(fname, &finfo)!=0) | |
| if(size>=0 && size<=(size_t)finfo.st_size) { | throw Exception("file.missing", // hardly possible: we just opened it OK |
| if(as_text) | &file_spec, |
| ((char *)data)[size]=0; | "stat failed: %s (%d), actual filename '%s'", |
| } else | strerror(errno), errno, fname); |
| PTHROW(0, 0, | |
| #ifdef NO_FOREIGN_GROUP_FILES | |
| if(finfo.st_gid/*foreign?*/!=getegid()) { | |
| throw Exception("parser.runtime", | |
| &file_spec, | |
| "parser reading files of foreign group disabled [recompile parser without --disable-foreign-group-files configure option], actual filename '%s'", | |
| fname); | |
| #endif | |
| action(pool, finfo, f, file_spec, fname, as_text, context); | |
| } catch(...) { | |
| unlock(f);close(f); | |
| if(fail_on_read_problem) | |
| /*re*/throw; | |
| return false; | |
| } | |
| unlock(f);close(f); | |
| return true; | |
| } else { | |
| if(fail_on_read_problem) | |
| throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, | |
| &file_spec, | &file_spec, |
| "read failed: actually read %d bytes count not in [0..%ul] valid range", | "%s failed: %s (%d), actual filename '%s'", |
| size, (unsigned long)finfo.st_size); //never | action_name, strerror(errno), errno, fname); |
| return false; | |
| return true;//prepare_config(result, remove_empty_lines); | } |
| } | } |
| if(fail_on_read_problem) | |
| PTHROW(0, 0, | static void create_dir_for_file(const String& file_spec) { |
| &file_spec, | size_t pos_after=1; |
| "read failed: %s (#%d)", strerror(errno), errno); | int pos_before; |
| return false; | while((pos_before=file_spec.pos("/", 1, pos_after))>=0) { |
| mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775); | |
| pos_after=pos_before+1; | |
| } | |
| } | } |
| /// @test mkdirs | bool file_write_action_under_lock( |
| void file_write(Pool& pool, | |
| const String& file_spec, | const String& file_spec, |
| const void *data, size_t size, | const char* action_name, File_write_action action, void *context, |
| bool as_text/*, | bool as_text, |
| bool exclusive*/) { | bool do_append, |
| char *fname=file_spec.cstr(String::UL_FILE_NAME); | bool do_block, |
| bool fail_on_lock_problem) { | |
| const char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| int f; | int f; |
| if(access(fname, F_OK)!=0) {/*no*/ | if(access(fname, W_OK)!=0) // no |
| if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0) | create_dir_for_file(file_spec); |
| close(f); | |
| } | if((f=open(fname, |
| if(access(fname, R_OK|W_OK)==0) { | O_CREAT|O_RDWR |
| int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY) | |(as_text?_O_TEXT:_O_BINARY) |
| #ifdef WIN32 | |(do_append?O_APPEND:0), 0664))>=0) { |
| |O_TRUNC | if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) { |
| #endif | Exception e("file.lock", |
| ; | &file_spec, |
| if((f=open(fname, mode, 0666))>=0) { | "shared lock failed: %s (%d), actual filename '%s'", |
| /*if(exclusive) | strerror(errno), errno, fname); |
| flock(f, LOCK_EX);*/ | close(f); |
| if(fail_on_lock_problem) | |
| if(size) write(f, data, size); | throw e; |
| #ifndef WIN32 | return false; |
| ftruncate(f, size); | |
| #endif | |
| /*if(exclusive) | |
| flock(f, LOCK_UN);*/ | |
| close(f); | |
| return; | |
| } | } |
| try { | |
| action(f, context); | |
| } catch(...) { | |
| if(!do_append) | |
| ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower | |
| unlock(f);close(f); | |
| /*re*/throw; | |
| } | |
| 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] | |
| unlock(f);close(f); | |
| return true; | |
| } else | |
| throw Exception(errno==EACCES?"file.access":0, | |
| &file_spec, | |
| "%s failed: %s (%d), actual filename '%s'", | |
| action_name, strerror(errno), errno, fname); | |
| // here should be nothing, see rethrow above | |
| } | |
| #ifndef DOXYGEN | |
| struct File_write_action_info { | |
| const void *data; size_t size; | |
| }; | |
| #endif | |
| static void file_write_action(int f, void *context) { | |
| File_write_action_info& info=*static_cast<File_write_action_info *>(context); | |
| if(info.size) { | |
| int written=write(f, info.data, info.size); | |
| if(written<0) | |
| throw Exception(0, | |
| 0, | |
| "write failed: %s (%d)", strerror(errno), errno); | |
| } | } |
| PTHROW(0, 0, | } |
| &file_spec, | void file_write( |
| "write failed: %s (#%d)", strerror(errno), errno); | const String& file_spec, |
| const void *data, size_t size, | |
| bool as_text, | |
| bool do_append) { | |
| File_write_action_info info={data, size}; | |
| file_write_action_under_lock( | |
| file_spec, | |
| "write", file_write_action, &info, | |
| as_text, | |
| do_append); | |
| } | } |
| void file_delete(Pool& pool, const String& file_spec) { | // throws nothing! [this is required in file_move & file_delete] |
| if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0) | static void rmdir(const String& file_spec, size_t pos_after) { |
| PTHROW(0, 0, | int pos_before; |
| &file_spec, | if((pos_before=file_spec.pos("/", 1, pos_after))>=0) |
| "unlink failed: %s (#%d)", strerror(errno), errno); | rmdir(file_spec, pos_before+1); |
| rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC)); | |
| } | } |
| bool file_delete(const String& file_spec, bool fail_on_read_problem) { | |
| const char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| if(unlink(fname)!=0) | |
| if(fail_on_read_problem) | |
| throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, | |
| &file_spec, | |
| "unlink failed: %s (%d), actual filename '%s'", | |
| strerror(errno), errno, fname); | |
| else | |
| return false; | |
| rmdir(file_spec, 1); | |
| return true; | |
| } | |
| void file_move(const String& old_spec, const String& new_spec) { | |
| const char* old_spec_cstr=old_spec.cstr(String::UL_FILE_SPEC); | |
| const char* new_spec_cstr=new_spec.cstr(String::UL_FILE_SPEC); | |
| create_dir_for_file(new_spec); | |
| if(rename(old_spec_cstr, new_spec_cstr)!=0) | |
| throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, | |
| &old_spec, | |
| "rename failed: %s (%d), actual filename '%s' to '%s'", | |
| strerror(errno), errno, old_spec_cstr, new_spec_cstr); | |
| rmdir(old_spec, 1); | |
| } | |
| bool entry_exists(const char* fname, struct stat *afinfo) { | |
| struct stat lfinfo; | |
| bool result=stat(fname, &lfinfo)==0; | |
| if(afinfo) | |
| *afinfo=lfinfo; | |
| return result; | |
| } | |
| bool entry_exists(const String& file_spec) { | |
| const char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| return entry_exists(fname, 0); | |
| } | |
| static bool entry_readable(const String& file_spec, bool need_dir) { | |
| char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| if(need_dir) { | |
| size_t size=strlen(fname); | |
| while(size) { | |
| char c=fname[size-1]; | |
| if(c=='/' || c=='\\') | |
| fname[--size]=0; | |
| else | |
| break; | |
| } | |
| } | |
| struct stat finfo; | |
| if(access(fname, R_OK)==0 && entry_exists(fname, &finfo)) { | |
| bool is_dir=(finfo.st_mode&S_IFDIR) != 0; | |
| return is_dir==need_dir; | |
| } | |
| return false; | |
| } | |
| bool file_readable(const String& file_spec) { | bool file_readable(const String& file_spec) { |
| return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0; | return entry_readable(file_spec, false); |
| } | |
| bool dir_readable(const String& file_spec) { | |
| return entry_readable(file_spec, true); | |
| } | |
| String *file_readable(const String& path, const String& name) { | |
| String *result=new(path.pool()) String(path); | |
| *result << "/"; | |
| *result << name; | |
| 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_NAME), X_OK)==0; | return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0; |
| } | } |
| char *getrow(char **row_ref, char delim) { | bool file_stat(const String& file_spec, |
| char *result=*row_ref; | size_t& rsize, |
| time_t& ratime, | |
| time_t& rmtime, | |
| time_t& rctime, | |
| bool fail_on_read_problem) { | |
| Pool& pool=file_spec.pool(); | |
| const char* fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| struct stat finfo; | |
| if(stat(fname, &finfo)!=0) | |
| if(fail_on_read_problem) | |
| throw Exception("file.missing", | |
| &file_spec, | |
| "getting file size failed: %s (%d), real filename '%s'", | |
| strerror(errno), errno, fname); | |
| else | |
| return false; | |
| rsize=finfo.st_size; | |
| ratime=finfo.st_atime; | |
| rmtime=finfo.st_mtime; | |
| rctime=finfo.st_ctime; | |
| return true; | |
| } | |
| char* getrow(char* *row_ref, char delim) { | |
| char* result=*row_ref; | |
| if(result) { | if(result) { |
| *row_ref=strchr(result, delim); | *row_ref=strchr(result, delim); |
| if(*row_ref) | if(*row_ref) |
| *((*row_ref)++)=0; | *((*row_ref)++)=0; |
| else if(!*result) | else if(!*result) |
| Line 158 char *getrow(char **row_ref, char delim) | Line 643 char *getrow(char **row_ref, char delim) |
| return result; | return result; |
| } | } |
| char *lsplit(char *string, char delim) { | char* lsplit(char* string, char delim) { |
| if(string) { | if(string) { |
| char *v=strchr(string, delim); | char* v=strchr(string, delim); |
| if(v) { | if(v) { |
| *v=0; | *v=0; |
| return v+1; | return v+1; |
| Line 169 char *lsplit(char *string, char delim) { | Line 654 char *lsplit(char *string, char delim) { |
| return 0; | return 0; |
| } | } |
| char *lsplit(char **string_ref, char delim) { | char* lsplit(char* *string_ref, char delim) { |
| char *result=*string_ref; | char* result=*string_ref; |
| char *next=lsplit(*string_ref, delim); | char* next=lsplit(*string_ref, delim); |
| *string_ref=next; | *string_ref=next; |
| return result; | return result; |
| } | } |
| char *rsplit(char *string, char delim) { | char* rsplit(char* string, char delim) { |
| if(string) { | if(string) { |
| char *v=strrchr(string, delim); | char* v=strrchr(string, delim); |
| if(v) { | if(v) { |
| *v=0; | *v=0; |
| return v+1; | return v+1; |
| Line 188 char *rsplit(char *string, char delim) { | Line 673 char *rsplit(char *string, char delim) { |
| } | } |
| /// @todo less stupid type detection | /// @todo less stupid type detection |
| char *format(Pool& pool, double value, char *fmt) { | char* format(Pool& pool, double value, char* fmt) { |
| char *result=(char *)pool.malloc(MAX_NUMBER); | char local_buf[MAX_NUMBER]; |
| size_t size; | |
| if(fmt) | if(fmt) |
| if(strpbrk(fmt, "diouxX")) | if(strpbrk(fmt, "diouxX")) |
| if(strpbrk(fmt, "ouxX")) | if(strpbrk(fmt, "ouxX")) |
| snprintf(result, MAX_NUMBER, fmt, (uint)value ); | size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value); |
| else | else |
| snprintf(result, MAX_NUMBER, fmt, (int)value ); | size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value); |
| else | else |
| snprintf(result, MAX_NUMBER, fmt, value); | size=snprintf(local_buf, sizeof(local_buf), fmt, value); |
| else | else |
| snprintf(result, MAX_NUMBER, "%d", (int)value); | size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value); |
| return result; | char* pool_buf=(char *)pool.malloc(size+1, 4); |
| 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(8*0x400, size), stdout); |
| if(chunk_written<=0) | if(chunk_written<=0) |
| break; | break; |
| size-=chunk_written; | size-=chunk_written; |
| buf=((const char*)buf)+chunk_written; | buf=((const char*)buf)+chunk_written; |
| } while(size>0); | } while(size>0); |
| return size; | return size; |
| #else | #else |
| return fwrite(buf, 1, size, stdout); | return fwrite(buf, 1, size, stdout); |
| #endif | #endif |
| } | } |
| const char *unescape_chars(Pool& pool, const char *cp, int len) { | char* unescape_chars(Pool& pool, const char* cp, int len) { |
| char *s=(char *)pool.malloc(len + 1); | char* s=(char *)pool.malloc(len + 1, 5); |
| enum EscapeState { | enum EscapeState { |
| EscapeRest, | EscapeRest, |
| EscapeFirst, | EscapeFirst, |
| Line 231 const char *unescape_chars(Pool& pool, c | Line 720 const char *unescape_chars(Pool& pool, c |
| int srcPos=0; | int srcPos=0; |
| int dstPos=0; | int dstPos=0; |
| while(srcPos < len) { | while(srcPos < len) { |
| int ch=cp[srcPos]; | int ch=cp[srcPos]; |
| switch(escapeState) { | switch(escapeState) { |
| case EscapeRest: | case EscapeRest: |
| if(ch=='%') { | if(ch=='%') { |
| escapeState=EscapeFirst; | escapeState=EscapeFirst; |
| } else if(ch=='+') { | } else if(ch=='+') { |
| s[dstPos++]=' '; | s[dstPos++]=' '; |
| } else { | } else { |
| s[dstPos++]=ch; | s[dstPos++]=ch; |
| } | } |
| Line 247 const char *unescape_chars(Pool& pool, c | Line 736 const char *unescape_chars(Pool& pool, c |
| escapeState=EscapeSecond; | escapeState=EscapeSecond; |
| break; | break; |
| case EscapeSecond: | case EscapeSecond: |
| escapedValue +=hex_value[ch]; | escapedValue +=hex_value[ch]; |
| s[dstPos++]=escapedValue; | s[dstPos++]=escapedValue; |
| escapeState=EscapeRest; | escapeState=EscapeRest; |
| break; | break; |
| } | } |
| srcPos++; | srcPos++; |
| } | } |
| s[dstPos]=0; | s[dstPos]=0; |
| return s; | return s; |
| } | } |
| struct Attributed_meaning_info { | |
| String::Untaint_lang lang; | |
| String *header; | |
| }; | |
| 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 | |
| if(ami.header->size()) | |
| ami.header->APPEND_CONST("; "); | |
| ami.header->append(akey, ami.lang, true); | |
| ami.header->APPEND_CONST("="); | |
| ami.header->append(static_cast<Value *>(avalue)->as_string(), | |
| ami.lang, true); | |
| } | |
| const String& attributed_meaning_to_string(Value& meaning, String::Untaint_lang lang) { | |
| String &result=*new(meaning.pool()) String(meaning.pool()); | |
| if(Hash *hash=meaning.get_hash()) { | |
| // $value(value) $subattribute(subattribute value) | |
| if(Value *value=static_cast<Value *>(hash->get(*value_name))) | |
| result.append(value->as_string(), lang, true); | |
| Attributed_meaning_info attributed_meaning_info={ | |
| lang, | |
| &result | |
| }; | |
| hash->for_each(append_attribute_subattribute, &attributed_meaning_info); | |
| } else // result value | |
| result.append(meaning.as_string(), lang, true); | |
| return result; | |
| } | |
| #ifdef WIN32 | #ifdef WIN32 |
| void back_slashes_to_slashes(char *s) { | void back_slashes_to_slashes(char* s) { |
| if(s) | if(s) |
| for(; *s; s++) | for(; *s; s++) |
| if(*s=='\\') | if(*s=='\\') |
| *s='/'; | *s='/'; |
| } | } |
| /* | /* |
| void slashes_to_back_slashes(char *s) { | void slashes_to_back_slashes(char* s) { |
| if(s) | if(s) |
| for(; *s; s++) | for(; *s; s++) |
| if(*s=='/') | if(*s=='/') |
| *s='\\'; | *s='\\'; |
| } | } |
| */ | */ |
| #endif | #endif |
| bool StrEqNc(const char *s1, const char *s2, bool strict) { | bool StrEqNc(const char* s1, const char* s2, bool strict) { |
| while(true) { | while(true) { |
| if(!(*s1)) { | if(!(*s1)) { |
| if(!(*s2)) | if(!(*s2)) |
| Line 326 bool StrEqNc(const char *s1, const char | Line 778 bool StrEqNc(const char *s1, const char |
| return false; | return false; |
| } else if((*s1) !=(*s2)) | } else if((*s1) !=(*s2)) |
| return false; | return false; |
| s1++; | s1++; |
| s2++; | s2++; |
| } | } |
| } | } |
| static bool isLeap(int year) { | |
| return !( | |
| (year % 4) || ((year % 400) && !(year % 100)) | |
| ); | |
| } | |
| int getMonthDays(int year, int month) { | |
| int monthDays[]={ | |
| 31, | |
| isLeap(year) ? 29 : 28, | |
| 31, | |
| 30, | |
| 31, | |
| 30, | |
| 31, | |
| 31, | |
| 30, | |
| 31, | |
| 30, | |
| 31 | |
| }; | |
| return monthDays[month]; | |
| } | |
| void remove_crlf(char* start, char* end) { | |
| for(char* p=start; p<end; p++) | |
| switch(*p) { | |
| case '\n': *p='|'; break; | |
| case '\r': *p=' '; break; | |
| } | |
| } | |
| /// must be last in this file | |
| #undef vsnprintf | |
| int __vsnprintf(char* b, size_t s, const char* f, va_list l) { | |
| if(!s) | |
| return 0; | |
| int r; | |
| // note: on win32& maybe somewhere else | |
| // vsnprintf do not writes terminating 0 in 'buffer full' case, reducing | |
| --s; | |
| #if _MSC_VER | |
| /* | |
| win32: | |
| 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 | |
| */ | |
| r=_vsnprintf(b, s, f, l); | |
| if(r<0) | |
| r=s; | |
| #else | |
| r=vsnprintf(b, s, f, l); | |
| /* | |
| solaris: | |
| man vsnprintf | |
| The snprintf() function returns the number of characters | |
| formatted, that is, the number of characters that would have | |
| been written to the buffer if it were large enough. If the | |
| value of n is 0 on a call to snprintf(), an unspecified | |
| value less than 1 is returned. | |
| */ | |
| if(r<0) | |
| r=0; | |
| else if(r>s) | |
| r=s; | |
| #endif | |
| b[r]=0; | |
| return r; | |
| } | |
| int __snprintf(char* b, size_t s, const char* f, ...) { | |
| va_list l; | |
| va_start(l, f); | |
| int r=__vsnprintf(b, s, f, l); | |
| va_end(l); | |
| return r; | |
| } | |
| int pa_sleep(unsigned long secs, unsigned long usecs) { | |
| for (; usecs >= 1000000; ++secs, usecs -= 1000000); | |
| #ifdef WIN32 | |
| Sleep(secs * 1000 + usecs / 1000); | |
| return 0; | |
| #else | |
| struct timeval t; | |
| t.tv_sec = secs; | |
| t.tv_usec = usecs; | |
| return (select(0, NULL, NULL, NULL, &t) == -1 ? errno : 0); | |
| #endif | |
| } |