--- parser3/src/main/pa_common.C 2001/03/13 18:32:47 1.12 +++ parser3/src/main/pa_common.C 2002/11/25 15:37:12 1.129 @@ -1,74 +1,675 @@ -/* - Parser - Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) +/** @file + Parser: commonly functions. - $Id: pa_common.C,v 1.12 2001/03/13 18:32:47 paf Exp $ + Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -#ifdef HAVE_CONFIG_H -# include "pa_config.h" -#endif - -#include -#include -#include -#include -#include -#include +static const char* IDENT_COMMON_C="$Date: 2002/11/25 15:37:12 $"; #include "pa_common.h" -#include "pa_types.h" #include "pa_exception.h" +#include "pa_globals.h" +#include "pa_hash.h" +#include "pa_vstring.h" #ifdef WIN32 +# include +#else +# define closesocket close +#endif -int __vsnprintf(char *b, size_t s, const char *f, va_list l) { - int r=_vsnprintf(b, --s, f, l); - b[s]=0; - return r; +// some maybe-undefined constants + +#ifndef _O_TEXT +# 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 + +#define DEFAULT_USER_AGENT "parser3" + + + +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; - va_start(l, f); - int r=__vsnprintf(b, s, f, l); - va_end(l); - return r; + +void fix_line_breaks(char* buf, size_t& size) { + //_asm int 3; + const char* const eob=buf+size; + char* dest=buf; + // 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]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 -char *file_read(Pool& pool, const char *fname, bool fail_on_read_problem) { - int f; - struct stat finfo; - if(fname && !stat(fname,&finfo) &&(f=open(fname,O_RDONLY -#ifdef WIN32 - |O_TEXT +#ifdef WE_CAN_USE_ALARM +static sigjmp_buf timeout_env; +static void timeout_handler(int sig){ + siglongjmp(timeout_env, 1); +} #endif - ))>=0) { - /*if(exclusive) - flock(f, LOCK_EX);*/ - - char *result=(char *)pool.malloc(finfo.st_size+1); - int read_size=read(f,result,finfo.st_size); - if(read_size>=0 && read_size<=finfo.st_size) - result[read_size]='\0'; - /*if(exclusive) - flock(f, LOCK_UN);*/ - close(f); - return result;//prepare_config(result, remove_empty_lines); - } - if(fail_on_read_problem) - PTHROW(0,0, - 0, - "use: can not read '%s' file", fname); - return 0; + +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 + +#ifdef WE_CAN_USE_ALARM + signal(SIGALRM, timeout_handler); +#endif + int sock=-1; + 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 not resolve hostname \"%s\"", host); + + if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) + throw Exception("http.connect", + origin_string, + "can not make socket: %s (%d)", strerror(errno), errno); + if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) + throw Exception("http.connect", + origin_string, + "can not 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; + } } -char *getrow(char **row_ref, char delim) { - char *result=*row_ref; +#ifndef DOXYGEN +struct Http_pass_header_info { + String* request; + bool user_agent_specified; +}; +#endif +static void http_pass_header(const Hash::Key& key, Hash::Val *value, void *info) +{ + Http_pass_header_info& i=*static_cast(info); + Pool& pool=i.request->pool(); + + *(i.request)<(value))->get_string()<<"\n"; + + if(key.change_case(pool, String::CC_UPPER)=="USER-AGENT") + i.user_agent_specified=true; +} +static void file_read_http(Pool& pool, const String& file_spec, + void*& data, size_t& data_size, + Hash *options=0, Hash** out_fields=0) { + char host[MAX_STRING]; + const char* uri; + int port; + const char* method="GET"; + int timeout=2; + Value *vheaders=0; + + 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(options) { + int valid_options=0; + if(Value *vmethod=static_cast(options->get(*http_method_name))) { + valid_options++; + method=vmethod->as_string().cstr(); + } + if(Value *vtimeout=static_cast(options->get(*http_timeout_name))) { + valid_options++; + timeout=vtimeout->as_int(); + } + if(vheaders=static_cast(options->get(*http_headers_name))) { + valid_options++; + } + if(valid_options!=options->size()) + throw Exception("parser.runtime", + 0, + "invalid option passed"); + } + + //making request + String request(pool); + request<< method <<" "<< uri <<" HTTP/1.0\nHost: "<< host<<"\n"; + bool user_agent_specified=false; + if(vheaders && !vheaders->is_string()) { // allow empty + if(Hash *headers=vheaders->get_hash(&file_spec)) { + Http_pass_header_info info={&request}; + headers->for_each(http_pass_header, &info); + user_agent_specified=info.user_agent_specified; + } else + throw Exception("parser.runtime", + &file_spec, + "headers param must be hash"); + }; + if(!user_agent_specified) // defaulting + request << "user-agent: " DEFAULT_USER_AGENT "\n"; + 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;ipos(": ", 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).change_case(pool, String::CC_UPPER), + 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(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, + void*& data, size_t& data_size, + bool as_text, Hash *params, Hash** out_fields, + bool fail_on_read_problem) { + 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; + + // first open, next stat: + // directory update of NTFS hard links performed on open. + // ex: + // a.html:^test[] and b.html hardlink to a.html + // user inserts ! before ^test in a.html + // directory entry of b.html in NTFS not updated at once, + // they delay update till open, so we would receive "!^test[" string + // if would do stat, next open. + // later: it seems, even this does not help sometimes + if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) { + try { + if(lock_shared_blocking(f)!=0) + throw Exception("file.lock", + &file_spec, + "shared lock failed: %s (%d), actual filename '%s'", + strerror(errno), errno, fname); + + struct stat finfo; + if(stat(fname, &finfo)!=0) + throw Exception("file.missing", // hardly possible: we just opened it OK + &file_spec, + "stat failed: %s (%d), actual filename '%s'", + strerror(errno), errno, fname); + +#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, + "%s failed: %s (%d), actual filename '%s'", + action_name, strerror(errno), errno, fname); + return false; + } +} + +static void create_dir_for_file(const String& file_spec) { + size_t pos_after=1; + int pos_before; + 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; + } +} + +bool file_write_action_under_lock( + const String& file_spec, + const char* action_name, File_write_action action, void *context, + bool as_text, + bool do_append, + bool do_block, + bool fail_on_lock_problem) { + const char* fname=file_spec.cstr(String::UL_FILE_SPEC); + int f; + if(access(fname, W_OK)!=0) // no + create_dir_for_file(file_spec); + + if((f=open(fname, + O_CREAT|O_RDWR + |(as_text?_O_TEXT:_O_BINARY) + |(do_append?O_APPEND:0), 0664))>=0) { + if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) { + Exception e("file.lock", + &file_spec, + "shared lock failed: %s (%d), actual filename '%s'", + strerror(errno), errno, fname); + close(f); + if(fail_on_lock_problem) + throw e; + return false; + } + + 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 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(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); + } +} +void file_write( + 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); +} + +// throws nothing! [this is required in file_move & file_delete] +static void rmdir(const String& file_spec, size_t pos_after) { + int pos_before; + if((pos_before=file_spec.pos("/", 1, pos_after))>=0) + 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) { + 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) { + return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0; +} + +bool file_stat(const String& file_spec, + 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) { - *row_ref=strchr(result, delim); + *row_ref=strchr(result, delim); if(*row_ref) *((*row_ref)++)=0; else if(!*result) @@ -77,9 +678,9 @@ char *getrow(char **row_ref, char delim) return result; } -char *lsplit(char *string_ref, char delim) { - if(string_ref) { - char *v=strchr(string_ref, delim); +char* lsplit(char* string, char delim) { + if(string) { + char* v=strchr(string, delim); if(v) { *v=0; return v+1; @@ -88,17 +689,17 @@ char *lsplit(char *string_ref, char deli return 0; } -char *lsplit(char **string_ref, char delim) { - char *result=*string_ref; - char *next=lsplit(*string_ref, delim); +char* lsplit(char* *string_ref, char delim) { + char* result=*string_ref; + char* next=lsplit(*string_ref, delim); *string_ref=next; return result; } -char *rsplit(char *string, char delim) { - if(string){ - char *v=strrchr(string, delim); - if (v){ +char* rsplit(char* string, char delim) { + if(string) { + char* v=strrchr(string, delim); + if(v) { *v=0; return v+1; } @@ -106,35 +707,210 @@ char *rsplit(char *string, char delim) { return NULL; } -char *format(Pool& pool, double value, char *fmt) { - char *result=(char *)pool.malloc(MAX_NUMBER); +/// @todo less stupid type detection +char* format(Pool& pool, double value, char* fmt) { + char local_buf[MAX_NUMBER]; + size_t size; + if(fmt) if(strpbrk(fmt, "diouxX")) if(strpbrk(fmt, "ouxX")) - snprintf(result, MAX_NUMBER, fmt, (uint)value ); + size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value); else - snprintf(result, MAX_NUMBER, fmt, (int)value ); + size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value); else - snprintf(result, MAX_NUMBER, fmt, value); + size=snprintf(local_buf, sizeof(local_buf), fmt, value); 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 char *buf) { +size_t stdout_write(const void *buf, size_t size) { #ifdef WIN32 - int size=strlen(buf); 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) break; size-=chunk_written; - buf+=chunk_written; - } while(size>0); + buf=((const char*)buf)+chunk_written; + } while(size>0); return size; #else - return fwrite(buf, 1, strlen(buf), stdout); + return fwrite(buf, 1, size, stdout); +#endif +} + +char* unescape_chars(Pool& pool, const char* cp, int len) { + char* s=(char *)pool.malloc(len + 1, 5); + enum EscapeState { + EscapeRest, + EscapeFirst, + EscapeSecond + } escapeState=EscapeRest; + int escapedValue=0; + int srcPos=0; + int dstPos=0; + while(srcPos < len) { + int ch=cp[srcPos]; + switch(escapeState) { + case EscapeRest: + if(ch=='%') { + escapeState=EscapeFirst; + } else if(ch=='+') { + s[dstPos++]=' '; + } else { + s[dstPos++]=ch; + } + break; + case EscapeFirst: + escapedValue=hex_value[ch] << 4; + escapeState=EscapeSecond; + break; + case EscapeSecond: + escapedValue +=hex_value[ch]; + s[dstPos++]=escapedValue; + escapeState=EscapeRest; + break; + } + srcPos++; + } + s[dstPos]=0; + return s; +} + +#ifdef WIN32 +void back_slashes_to_slashes(char* s) { + if(s) + for(; *s; s++) + if(*s=='\\') + *s='/'; +} +/* +void slashes_to_back_slashes(char* s) { + if(s) + for(; *s; s++) + if(*s=='/') + *s='\\'; +} +*/ +#endif + +bool StrEqNc(const char* s1, const char* s2, bool strict) { + while(true) { + if(!(*s1)) { + if(!(*s2)) + return true; + else + return !strict; + } else if(!(*s2)) + return !strict; + if(isalpha(*s1)) { + if(tolower(*s1) !=tolower(*s2)) + return false; + } else if((*s1) !=(*s2)) + return false; + s1++; + 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; ps) + 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 }