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| version 1.19.2.3, 2001/03/20 18:24:44 | version 1.122, 2002/11/21 07:26:29 |
|---|---|
| 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) | static const char* IDENT_COMMON_C="$Date$"; |
| $Id$ | #include "pa_common.h" |
| */ | #include "pa_exception.h" |
| #include "pa_globals.h" | |
| #ifdef HAVE_CONFIG_H | #ifdef WIN32 |
| # include "pa_config.h" | # include <windows.h> |
| #endif | #endif |
| #include <fcntl.h> | // some maybe-undefined constants |
| #include <sys/types.h> | |
| #include <sys/stat.h> | |
| #include <io.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <errno.h> | |
| #ifdef WIN32 | #ifndef _O_TEXT |
| #else | # define _O_TEXT 0 |
| # include <unistd.h> | #endif |
| #ifndef _O_BINARY | |
| # define _O_BINARY 0 | |
| #endif | #endif |
| #include "pa_common.h" | // locking constants |
| #include "pa_types.h" | |
| #include "pa_exception.h" | |
| #include "pa_pool.h" | |
| #include "pa_globals.h" | |
| #include "pa_value.h" | |
| #include "pa_hash.h" | |
| #include "pa_string.h" | |
| #ifdef WIN32 | #ifdef HAVE_FLOCK |
| int __vsnprintf(char *b, size_t s, const char *f, va_list l) { | static int lock_shared_blocking(int fd) { return flock(fd, LOCK_SH); } |
| int r=_vsnprintf(b, --s, f, l); | static int lock_exclusive_blocking(int fd) { return flock(fd, LOCK_EX); } |
| b[s]=0; | static int lock_exclusive_nonblocking(int fd) { return flock(fd, LOCK_EX || LOCK_NB); } |
| return r; | static int unlock(int fd) { return flock(fd, LOCK_UN); } |
| } | |
| int __snprintf(char *b, size_t s, const char *f, ...) { | #else |
| va_list l; | #ifdef HAVE__LOCKING |
| va_start(l, f); | |
| int r=__vsnprintf(b, s, f, l); | |
| va_end(l); | |
| return r; | |
| } | |
| #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 |
| #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; | |
| } | |
| 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]<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 char *fname, bool fail_on_read_problem) { | char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) { |
| int f; | void *result; size_t size; |
| return file_read(pool, file_spec, result, size, true, fail_on_read_problem)?(char *)result:0; | |
| } | |
| bool file_read(Pool& pool, const String& file_spec, | |
| void*& data, size_t& data_size, bool as_text, | |
| bool fail_on_read_problem, | |
| size_t offset, size_t limit) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| int f; | |
| struct stat finfo; | struct stat finfo; |
| if(fname && !stat(fname,&finfo) &&(f=open(fname,O_RDONLY | |
| #ifdef WIN32 | // first open, next stat: |
| |O_TEXT | // 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. | |
| if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) { | |
| if(lock_shared_blocking(f)!=0) { | |
| Exception e("file.lock", | |
| &file_spec, | |
| "shared lock failed: %s (%d), actual filename '%s'", | |
| strerror(errno), errno, fname); | |
| unlock(f); | |
| close(f); | |
| if(fail_on_read_problem) | |
| throw e; | |
| return false; | |
| } | |
| if(stat(fname, &finfo)!=0) { | |
| Exception e("file.missing", | |
| &file_spec, | |
| "stat failed: %s (%d), actual filename '%s'", | |
| strerror(errno), errno, fname); | |
| unlock(f); | |
| close(f); | |
| if(fail_on_read_problem) | |
| throw e; | |
| return false; | |
| } | |
| #ifdef NO_FOREIGN_GROUP_FILES | |
| if(finfo.st_gid/*foreign?*/!=getegid()) { | |
| Exception e("parser.runtime", | |
| &file_spec, | |
| "parser reading files of foreign group disabled [recompile parser without --disable-foreign-group-files configure option], actual filename '%s'", | |
| fname); | |
| unlock(f); | |
| close(f); | |
| if(fail_on_read_problem) | |
| throw e; | |
| return false; | |
| } | |
| #endif | #endif |
| ))>=0) { | size_t max_size=limit?min(offset+limit, (size_t)finfo.st_size)-offset:finfo.st_size; |
| /*if(exclusive) | if(!max_size) { // eof |
| flock(f, LOCK_EX);*/ | if(as_text) { |
| data=pool.malloc(1); | |
| char *result=(char *)pool.malloc(finfo.st_size+1); | *(char*)data=0; |
| int read_size=read(f,result,finfo.st_size); | } else |
| if(read_size>=0 && read_size<=finfo.st_size) | data=0; |
| result[read_size]='\0'; | data_size=0; |
| /*if(exclusive) | } else { |
| flock(f, LOCK_UN);*/ | data=pool.malloc(max_size+(as_text?1:0), 3); |
| if(offset) | |
| lseek(f, offset, SEEK_SET); | |
| data_size=read(f, data, max_size); | |
| } | |
| unlock(f); | |
| close(f); | close(f); |
| return result;//prepare_config(result, remove_empty_lines); | if(!max_size) // eof |
| } | return true; |
| if(fail_on_read_problem) | |
| PTHROW(0,0, | if(ssize_t(data_size)<0 || data_size>max_size) |
| 0, | throw Exception(0, |
| "use: can not read '%s' file", fname); | &file_spec, |
| return 0; | "read failed: actually read %d bytes count not in [0..%lu] valid range", |
| data_size, (unsigned long)max_size); //never | |
| if(as_text) { | |
| fix_line_breaks((char *)data, data_size); | |
| // note: after fixing | |
| ((char*&)data)[data_size]=0; | |
| } | |
| return true; | |
| } else { | |
| if(fail_on_read_problem) | |
| throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, | |
| &file_spec, | |
| "read failed: %s (%d), actual filename '%s'", | |
| 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; | |
| } | |
| } | } |
| void file_write(Pool& pool, | bool file_write_action_under_lock( |
| const char *fname, | const String& file_spec, |
| const char *data, size_t size, | const char *action_name, void (*action)(int, void *), void *context, |
| bool as_text/*, | bool as_text, |
| bool exclusive*/) { | bool do_append, |
| if(fname) { | bool do_block, |
| int f; | bool fail_on_lock_problem) { |
| if(access(fname, F_OK)!=0) {/*no*/ | const char *fname=file_spec.cstr(String::UL_FILE_SPEC); |
| if((f=open(fname,O_WRONLY|O_CREAT|_O_BINARY,0666))>0) | int f; |
| close(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; | |
| } | } |
| if(access(fname, R_OK|W_OK)==0) { | |
| int mode=O_RDWR | try { |
| #ifdef WIN32 | action(f, context); |
| |O_TRUNC | } catch(...) { |
| #endif | if(!do_append) |
| ; | ftruncate(f, tell(f)); // one can not use O_TRUNC, read lower |
| #ifdef WIN32 | unlock(f); |
| mode|=as_text?_O_TEXT:_O_BINARY; | close(f); |
| /*re*/throw; | |
| } | |
| if(!do_append) | |
| ftruncate(f, tell(f)); // 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 | #endif |
| if((f=open(fname,mode,0666))>=0) { | static void file_write_action(int f, void *context) { |
| /*if(exclusive) | File_write_action_info& info=*static_cast<File_write_action_info *>(context); |
| flock(f, LOCK_EX);*/ | if(info.size) { |
| int written=write(f, info.data, info.size); | |
| if(size) write(f,data,size); | if(written<0) |
| #ifndef WIN32 | throw Exception(0, |
| ftruncate(f,size); | 0, |
| #endif | "write failed: %s (%d)", strerror(errno), errno); |
| /*if(exclusive) | } |
| flock(f, LOCK_UN);*/ | } |
| close(f); | void file_write( |
| return; | 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; | |
| } | } |
| } | } |
| if(fname) | struct stat finfo; |
| PTHROW(0, 0, | if(access(fname, R_OK)==0 && entry_exists(fname, &finfo)) { |
| 0, | bool is_dir=(finfo.st_mode&S_IFDIR) != 0; |
| "file_write('%s'): %s (#%d)", | return is_dir==need_dir; |
| fname, strerror(errno), errno); | } |
| else | return false; |
| PTHROW(0, 0, | } |
| 0, | bool file_readable(const String& file_spec) { |
| "file_write: no filename specified"); | 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 *getrow(char **row_ref, char delim) { |
| Line 137 char *getrow(char **row_ref, char delim) | Line 413 char *getrow(char **row_ref, char delim) |
| return result; | return result; |
| } | } |
| char *lsplit(char *string_ref, char delim) { | char *lsplit(char *string, char delim) { |
| if(string_ref) { | if(string) { |
| char *v=strchr(string_ref, delim); | char *v=strchr(string, delim); |
| if(v) { | if(v) { |
| *v=0; | *v=0; |
| return v+1; | return v+1; |
| Line 166 char *rsplit(char *string, char delim) { | Line 442 char *rsplit(char *string, char delim) { |
| return NULL; | return NULL; |
| } | } |
| /// @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 char *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+=chunk_written; | buf=((const char*)buf)+chunk_written; |
| } while(size>0); | } while(size>0); |
| return size; | return size; |
| Line 198 size_t stdout_write(const char *buf, siz | Line 479 size_t stdout_write(const char *buf, siz |
| #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, |
| EscapeSecond | EscapeSecond |
| } escapeState=EscapeRest; | } escapeState=EscapeRest; |
| int escapedValue=0; | int escapedValue=0; |
| Line 236 const char *unescape_chars(Pool& pool, c | Line 517 const char *unescape_chars(Pool& pool, c |
| return s; | return s; |
| } | } |
| static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue, | #ifdef WIN32 |
| void *info) { | void back_slashes_to_slashes(char *s) { |
| if(akey==VALUE_NAME) | if(s) |
| return; | for(; *s; s++) |
| if(*s=='\\') | |
| // ...; charset=windows1251 | *s='/'; |
| String *string=static_cast<String *>(info); | } |
| string->APPEND_CONST("; "); | /* |
| string->append(akey, String::UL_HEADER, true); | void slashes_to_back_slashes(char *s) { |
| string->APPEND_CONST("="); | if(s) |
| string->append(static_cast<Value *>(avalue)->as_string(), | for(; *s; s++) |
| String::UL_HEADER, true); | if(*s=='/') |
| } | *s='\\'; |
| const String& attributed_meaning_string(Value *meaning) { | } |
| String &result=*new(meaning->pool()) String(meaning->pool()); | */ |
| if(Hash *hash=meaning->get_hash()) { | #endif |
| // $value(value) $subattribute(subattribute value) | |
| if(Value *value=static_cast<Value *>(hash->get(*value_name))) | bool StrEqNc(const char *s1, const char *s2, bool strict) { |
| result.append(value->as_string(), String::UL_HEADER, true); | while(true) { |
| if(!(*s1)) { | |
| hash->foreach(append_attribute_subattribute, &result); | if(!(*s2)) |
| } else // result value | return true; |
| result.append(meaning->as_string(), String::UL_HEADER, 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++; | |
| } | |
| } | |
| return result; | |
| } | |
| 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 | |
| } |