1 /*****************************************************************************
2 * libc.c: Extra libc function for some systems.
3 *****************************************************************************
4 * Copyright (C) 2002-2006 the VideoLAN team
7 * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
10 * Derk-Jan Hartman <hartman at videolan dot org>
11 * Christophe Massiot <massiot@via.ecp.fr>
12 * Rémi Denis-Courmont <rem à videolan.org>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
27 *****************************************************************************/
38 #if defined(HAVE_ICONV)
51 # include <sys/time.h>
54 # include <sys/wait.h>
56 # include <sys/socket.h>
57 # include <sys/poll.h>
60 #if defined(WIN32) || defined(UNDER_CE)
67 # define WIN32_LEAN_AND_MEAN
72 # define strcoll strcmp
75 /*****************************************************************************
76 * getenv: just in case, but it should never be called
77 *****************************************************************************/
78 #if !defined( HAVE_GETENV )
79 char *vlc_getenv( const char *name )
85 /*****************************************************************************
86 * strdup: returns a malloc'd copy of a string
87 *****************************************************************************/
88 #if !defined( HAVE_STRDUP )
89 char *vlc_strdup( const char *string )
91 return strndup( string, strlen( string ) );
95 /*****************************************************************************
96 * strndup: returns a malloc'd copy of at most n bytes of string
97 * Does anyone know whether or not it will be present in Jaguar?
98 *****************************************************************************/
99 #if !defined( HAVE_STRNDUP )
100 char *vlc_strndup( const char *string, size_t n )
103 size_t len = strlen( string );
105 len = __MIN( len, n );
106 psz = (char*)malloc( len + 1 );
109 memcpy( (void*)psz, (const void*)string, len );
117 /*****************************************************************************
119 *****************************************************************************/
120 #if !defined( HAVE_STRNLEN )
121 size_t vlc_strnlen( const char *psz, size_t n )
123 const char *psz_end = memchr( psz, 0, n );
124 return psz_end ? (size_t)( psz_end - psz ) : n;
128 /*****************************************************************************
129 * strcasecmp: compare two strings ignoring case
130 *****************************************************************************/
131 #if !defined( HAVE_STRCASECMP ) && !defined( HAVE_STRICMP )
132 int vlc_strcasecmp( const char *s1, const char *s2 )
135 if( !s1 || !s2 ) return -1;
142 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
146 if( !*s1 && !*s2 ) return 0;
147 else return (*s1 ? 1 : -1);
151 /*****************************************************************************
152 * strncasecmp: compare n chars from two strings ignoring case
153 *****************************************************************************/
154 #if !defined( HAVE_STRNCASECMP ) && !defined( HAVE_STRNICMP )
155 int vlc_strncasecmp( const char *s1, const char *s2, size_t n )
158 if( !s1 || !s2 ) return -1;
160 while( n > 0 && *s1 && *s2 )
165 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
169 if( !n || (!*s1 && !*s2) ) return 0;
170 else return (*s1 ? 1 : -1);
174 /******************************************************************************
175 * strcasestr: find a substring (little) in another substring (big)
176 * Case sensitive. Return NULL if not found, return big if little == null
177 *****************************************************************************/
178 #if !defined( HAVE_STRCASESTR ) && !defined( HAVE_STRISTR )
179 char * vlc_strcasestr( const char *psz_big, const char *psz_little )
181 char *p_pos = (char *)psz_big;
183 if( !psz_big || !psz_little || !*psz_little ) return p_pos;
187 if( toupper( *p_pos ) == toupper( *psz_little ) )
189 char * psz_cur1 = p_pos + 1;
190 char * psz_cur2 = (char *)psz_little + 1;
191 while( *psz_cur1 && *psz_cur2 &&
192 toupper( *psz_cur1 ) == toupper( *psz_cur2 ) )
197 if( !*psz_cur2 ) return p_pos;
205 /*****************************************************************************
207 *****************************************************************************/
208 #if !defined(HAVE_VASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
209 int vlc_vasprintf(char **strp, const char *fmt, va_list ap)
211 /* Guess we need no more than 100 bytes. */
213 char *p = malloc( i_size );
224 /* Try to print in the allocated space. */
225 n = vsnprintf( p, i_size, fmt, ap );
227 /* If that worked, return the string. */
228 if (n > -1 && n < i_size)
233 /* Else try again with more space. */
234 if (n > -1) /* glibc 2.1 */
236 i_size = n+1; /* precisely what is needed */
240 i_size *= 2; /* twice the old size */
242 if( (p = realloc( p, i_size ) ) == NULL)
251 /*****************************************************************************
253 *****************************************************************************/
254 #if !defined(HAVE_ASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
255 int vlc_asprintf( char **strp, const char *fmt, ... )
260 va_start( args, fmt );
261 i_ret = vasprintf( strp, fmt, args );
268 /*****************************************************************************
269 * atof: convert a string to a double.
270 *****************************************************************************/
271 #if !defined( HAVE_ATOF )
272 double vlc_atof( const char *nptr )
275 wchar_t *psz_tmp = NULL;
276 int i_len = strlen( nptr ) + 1;
278 psz_tmp = malloc( i_len * sizeof(wchar_t) );
281 MultiByteToWideChar( CP_ACP, 0, nptr, -1, psz_tmp, i_len );
282 f_result = wcstod( psz_tmp, NULL );
289 /*****************************************************************************
290 * strtoll: convert a string to a 64 bits int.
291 *****************************************************************************/
292 #if !defined( HAVE_STRTOLL )
293 int64_t vlc_strtoll( const char *nptr, char **endptr, int base )
296 int sign = 1, newbase = base ? base : 10;
298 while( isspace(*nptr) ) nptr++;
306 /* Try to detect base */
319 if( base && newbase != base )
321 if( endptr ) *endptr = (char *)nptr;
328 while( *nptr >= '0' && *nptr <= '9' )
331 i_value += ( *nptr++ - '0' );
333 if( endptr ) *endptr = (char *)nptr;
337 while( (*nptr >= '0' && *nptr <= '9') ||
338 (*nptr >= 'a' && *nptr <= 'f') ||
339 (*nptr >= 'A' && *nptr <= 'F') )
342 if(*nptr >= '0' && *nptr <= '9') i_valc = *nptr - '0';
343 else if(*nptr >= 'a' && *nptr <= 'f') i_valc = *nptr - 'a' +10;
344 else if(*nptr >= 'A' && *nptr <= 'F') i_valc = *nptr - 'A' +10;
349 if( endptr ) *endptr = (char *)nptr;
353 i_value = strtol( nptr, endptr, newbase );
357 return i_value * sign;
361 /*****************************************************************************
362 * atoll: convert a string to a 64 bits int.
363 *****************************************************************************/
364 #if !defined( HAVE_ATOLL )
365 int64_t vlc_atoll( const char *nptr )
367 return strtoll( nptr, (char **)NULL, 10 );
371 /*****************************************************************************
372 * lldiv: returns quotient and remainder
373 *****************************************************************************/
374 #if defined(SYS_BEOS) \
375 || (defined (__FreeBSD__) && (__FreeBSD__ < 5))
376 lldiv_t vlc_lldiv( long long numer, long long denom )
379 d.quot = numer / denom;
380 d.rem = numer % denom;
387 * Copy a string to a sized buffer. The result is always nul-terminated
388 * (contrary to strncpy()).
390 * @param dest destination buffer
391 * @param src string to be copied
392 * @param len maximum number of characters to be copied plus one for the
395 * @return strlen(src)
398 extern size_t vlc_strlcpy (char *tgt, const char *src, size_t bufsize)
402 for (length = 1; (length < bufsize) && *src; length++)
415 /*****************************************************************************
416 * vlc_*dir_wrapper: wrapper under Windows to return the list of drive letters
417 * when called with an empty argument or just '\'
418 *****************************************************************************/
419 #if defined(WIN32) && !defined(UNDER_CE)
422 typedef struct vlc_DIR
426 struct _wdirent dd_dir;
427 vlc_bool_t b_insert_back;
430 void *vlc_wopendir( const wchar_t *wpath )
432 vlc_DIR *p_dir = NULL;
433 _WDIR *p_real_dir = NULL;
435 if ( wpath == NULL || wpath[0] == '\0'
436 || (wcscmp (wpath, L"\\") == 0) )
438 /* Special mode to list drive letters */
439 p_dir = malloc( sizeof(vlc_DIR) );
442 p_dir->p_real_dir = NULL;
443 p_dir->i_drives = GetLogicalDrives();
444 return (void *)p_dir;
447 p_real_dir = _wopendir( wpath );
448 if ( p_real_dir == NULL )
451 p_dir = malloc( sizeof(vlc_DIR) );
454 _wclosedir( p_real_dir );
457 p_dir->p_real_dir = p_real_dir;
459 assert (wpath[0]); // wpath[1] is defined
460 p_dir->b_insert_back = !wcscmp (wpath + 1, L":\\");
461 return (void *)p_dir;
464 struct _wdirent *vlc_wreaddir( void *_p_dir )
466 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
470 if ( p_dir->p_real_dir != NULL )
472 if ( p_dir->b_insert_back )
474 /* Adds "..", gruik! */
475 p_dir->dd_dir.d_ino = 0;
476 p_dir->dd_dir.d_reclen = 0;
477 p_dir->dd_dir.d_namlen = 2;
478 wcscpy( p_dir->dd_dir.d_name, L".." );
479 p_dir->b_insert_back = VLC_FALSE;
480 return &p_dir->dd_dir;
483 return _wreaddir( p_dir->p_real_dir );
486 /* Drive letters mode */
487 i_drives = p_dir->i_drives;
489 return NULL; /* end */
491 for ( i = 0; i < sizeof(DWORD)*8; i++, i_drives >>= 1 )
492 if ( i_drives & 1 ) break;
495 return NULL; /* this should not happen */
497 swprintf( p_dir->dd_dir.d_name, L"%c:\\", 'A' + i );
498 p_dir->dd_dir.d_namlen = wcslen(p_dir->dd_dir.d_name);
499 p_dir->i_drives &= ~(1UL << i);
500 return &p_dir->dd_dir;
503 int vlc_wclosedir( void *_p_dir )
505 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
508 if ( p_dir->p_real_dir != NULL )
509 i_ret = _wclosedir( p_dir->p_real_dir );
515 void vlc_rewinddir( void *_p_dir )
517 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
519 if ( p_dir->p_real_dir != NULL )
520 _wrewinddir( p_dir->p_real_dir );
523 void vlc_seekdir( void *_p_dir, long loc)
525 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
527 if ( p_dir->p_real_dir != NULL )
528 _wseekdir( p_dir->p_real_dir, loc );
531 long vlc_telldir( void *_p_dir )
533 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
535 if ( p_dir->p_real_dir != NULL )
536 return _wtelldir( p_dir->p_real_dir );
541 /*****************************************************************************
542 * scandir: scan a directory alpha-sorted
543 *****************************************************************************/
544 #if !defined( HAVE_SCANDIR )
545 /* FIXME: I suspect this is dead code -> utf8_scandir */
551 int vlc_alphasort( const struct dirent **a, const struct dirent **b )
553 return strcoll( (*a)->d_name, (*b)->d_name );
556 int vlc_scandir( const char *name, struct dirent ***namelist,
557 int (*filter) ( const struct dirent * ),
558 int (*compar) ( const struct dirent **,
559 const struct dirent ** ) )
562 struct dirent * p_content;
563 struct dirent ** pp_list;
566 if( !namelist || !( p_dir = opendir( name ) ) ) return -1;
570 while( ( p_content = readdir( p_dir ) ) )
572 if( filter && !filter( p_content ) )
576 pp_list = realloc( pp_list, ( ret + 1 ) * sizeof( struct dirent * ) );
577 size = sizeof( struct dirent ) + strlen( p_content->d_name ) + 1;
578 pp_list[ret] = malloc( size );
581 memcpy( pp_list[ret], p_content, size );
586 /* Continuing is useless when no more memory can be allocted,
587 * so better return what we have found.
598 qsort( pp_list, ret, sizeof( struct dirent * ),
599 (int (*)(const void *, const void *)) compar );
608 /*****************************************************************************
609 * dgettext: gettext for plugins.
610 *****************************************************************************/
611 char *vlc_dgettext( const char *package, const char *msgid )
613 #if defined( ENABLE_NLS ) \
614 && ( defined(HAVE_GETTEXT) || defined(HAVE_INCLUDED_GETTEXT) )
615 return dgettext( package, msgid );
617 return (char *)msgid;
622 /*****************************************************************************
623 * count_utf8_string: returns the number of characters in the string.
624 *****************************************************************************/
625 static int count_utf8_string( const char *psz_string )
627 int i = 0, i_count = 0;
628 while( psz_string[ i ] != 0 )
630 if( ((unsigned char *)psz_string)[ i ] < 0x80UL ) i_count++;
636 /*****************************************************************************
637 * wraptext: inserts \n at convenient places to wrap the text.
638 * Returns the modified string in a new buffer.
639 *****************************************************************************/
640 char *vlc_wraptext( const char *psz_text, int i_line )
643 char *psz_line, *psz_new_text;
645 psz_line = psz_new_text = strdup( psz_text );
647 i_len = count_utf8_string( psz_text );
649 while( i_len > i_line )
651 /* Look if there is a newline somewhere. */
652 char *psz_parser = psz_line;
654 while( i_count <= i_line && *psz_parser != '\n' )
656 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
660 if( *psz_parser == '\n' )
662 i_len -= (i_count + 1);
663 psz_line = psz_parser + 1;
667 /* Find the furthest space. */
668 while( psz_parser > psz_line && *psz_parser != ' ' )
670 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser--;
674 if( *psz_parser == ' ' )
677 i_len -= (i_count + 1);
678 psz_line = psz_parser + 1;
682 /* Wrapping has failed. Find the first space or newline */
683 while( i_count < i_len && *psz_parser != ' ' && *psz_parser != '\n' )
685 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
689 if( i_count < i_len ) *psz_parser = '\n';
690 i_len -= (i_count + 1);
691 psz_line = psz_parser + 1;
697 /*****************************************************************************
699 *****************************************************************************/
700 vlc_iconv_t vlc_iconv_open( const char *tocode, const char *fromcode )
702 #if defined(HAVE_ICONV)
703 return iconv_open( tocode, fromcode );
709 size_t vlc_iconv( vlc_iconv_t cd, const char **inbuf, size_t *inbytesleft,
710 char **outbuf, size_t *outbytesleft )
712 #if defined(HAVE_ICONV)
713 return iconv( cd, (ICONV_CONST char **)inbuf, inbytesleft,
714 outbuf, outbytesleft );
718 if (inbytesleft == NULL || outbytesleft == NULL)
723 i_bytes = __MIN(*inbytesleft, *outbytesleft);
724 if( !inbuf || !outbuf || !i_bytes ) return (size_t)(-1);
725 memcpy( *outbuf, *inbuf, i_bytes );
728 inbytesleft -= i_bytes;
729 outbytesleft -= i_bytes;
734 int vlc_iconv_close( vlc_iconv_t cd )
736 #if defined(HAVE_ICONV)
737 return iconv_close( cd );
743 /*****************************************************************************
745 * (adapted from libavcodec, author Michael Niedermayer <michaelni@gmx.at>)
746 *****************************************************************************/
747 vlc_bool_t vlc_ureduce( unsigned *pi_dst_nom, unsigned *pi_dst_den,
748 uint64_t i_nom, uint64_t i_den, uint64_t i_max )
750 vlc_bool_t b_exact = 1;
760 i_gcd = GCD( i_nom, i_den );
764 if( i_max == 0 ) i_max = I64C(0xFFFFFFFF);
766 if( i_nom > i_max || i_den > i_max )
768 uint64_t i_a0_num = 0, i_a0_den = 1, i_a1_num = 1, i_a1_den = 0;
773 uint64_t i_x = i_nom / i_den;
774 uint64_t i_a2n = i_x * i_a1_num + i_a0_num;
775 uint64_t i_a2d = i_x * i_a1_den + i_a0_den;
777 if( i_a2n > i_max || i_a2d > i_max ) break;
781 i_a0_num = i_a1_num; i_a0_den = i_a1_den;
782 i_a1_num = i_a2n; i_a1_den = i_a2d;
783 if( i_nom == 0 ) break;
784 i_x = i_nom; i_nom = i_den; i_den = i_x;
796 /*************************************************************************
797 * vlc_parse_cmdline: Command line parsing into elements.
799 * The command line is composed of space/tab separated arguments.
800 * Quotes can be used as argument delimiters and a backslash can be used to
802 *************************************************************************/
803 static void find_end_quote( char **s, char **ppsz_parser, int i_quote )
812 (*ppsz_parser)++; (*s)++;
815 else if( **s == '"' || **s == '\'' )
817 /* Preceeded by a number of '\' which we erase. */
818 *ppsz_parser -= i_bcount / 2;
821 /* '\\' followed by a '"' or '\'' */
824 (*ppsz_parser)++; (*s)++;
836 /* Different quoting */
839 (*ppsz_parser)++; (*s)++;
840 find_end_quote( s, ppsz_parser, i_quote );
842 (*ppsz_parser)++; (*s)++;
849 /* A regular character */
851 (*ppsz_parser)++; (*s)++;
857 char **vlc_parse_cmdline( const char *psz_cmdline, int *i_args )
861 char *s, *psz_parser, *psz_arg, *psz_orig;
864 if( !psz_cmdline ) return 0;
865 psz_orig = strdup( psz_cmdline );
866 psz_arg = psz_parser = s = psz_orig;
870 if( *s == '\t' || *s == ' ' )
872 /* We have a complete argument */
874 TAB_APPEND( argc, argv, strdup(psz_arg) );
876 /* Skip trailing spaces/tabs */
877 do{ s++; } while( *s == '\t' || *s == ' ' );
880 psz_arg = psz_parser = s;
883 else if( *s == '\\' )
885 *psz_parser++ = *s++;
888 else if( *s == '"' || *s == '\'' )
890 if( ( i_bcount & 1 ) == 0 )
892 /* Preceeded by an even number of '\', this is half that
893 * number of '\', plus a quote which we erase. */
895 psz_parser -= i_bcount / 2;
897 find_end_quote( &s, &psz_parser, i_quote );
902 /* Preceeded by an odd number of '\', this is half that
903 * number of '\' followed by a '"' */
904 psz_parser = psz_parser - i_bcount/2 - 1;
912 /* A regular character */
913 *psz_parser++ = *s++;
918 /* Take care of the last arg */
922 TAB_APPEND( argc, argv, strdup(psz_arg) );
925 if( i_args ) *i_args = argc;
930 /*************************************************************************
931 * vlc_execve: Execute an external program with a given environment,
932 * wait until it finishes and return its standard output
933 *************************************************************************/
934 int __vlc_execve( vlc_object_t *p_object, int i_argc, char *const *ppsz_argv,
935 char *const *ppsz_env, const char *psz_cwd,
936 const char *p_in, size_t i_in,
937 char **pp_data, size_t *pi_data )
939 (void)i_argc; // <-- hmph
941 # define BUFSIZE 1024
942 int fds[2], i_status;
944 if (socketpair (AF_LOCAL, SOCK_STREAM, 0, fds))
948 if ((fds[0] > 2) && (fds[1] > 2))
954 msg_Err (p_object, "unable to fork (%m)");
963 pthread_sigmask (SIG_SETMASK, &set, NULL);
966 * Like it or not, close can fail (and not only with EBADF)
968 if ((close (0) == 0) && (close (1) == 0) && (close (2) == 0)
969 && (dup (fds[1]) == 0) && (dup (fds[1]) == 1)
970 && (open ("/dev/null", O_RDONLY) == 2)
971 && ((psz_cwd == NULL) || (chdir (psz_cwd) == 0)))
972 execve (ppsz_argv[0], ppsz_argv, ppsz_env);
986 shutdown (fds[0], SHUT_WR);
988 while (!p_object->b_die)
990 struct pollfd ufd[1];
991 memset (ufd, 0, sizeof (ufd));
993 ufd[0].events = POLLIN;
996 ufd[0].events |= POLLOUT;
998 if (poll (ufd, 1, 10) <= 0)
1001 if (ufd[0].revents & ~POLLOUT)
1003 char *ptr = realloc (*pp_data, *pi_data + BUFSIZE + 1);
1005 break; /* safely abort */
1009 ssize_t val = read (fds[0], ptr + *pi_data, BUFSIZE);
1014 shutdown (fds[0], SHUT_RD);
1022 if (ufd[0].revents & POLLOUT)
1024 ssize_t val = write (fds[0], p_in, i_in);
1030 shutdown (fds[0], SHUT_WR);
1042 while (waitpid (pid, &i_status, 0) == -1);
1044 if (WIFEXITED (i_status))
1046 i_status = WEXITSTATUS (i_status);
1048 msg_Warn (p_object, "child %s (PID %d) exited with error code %d",
1049 ppsz_argv[0], (int)pid, i_status);
1052 if (WIFSIGNALED (i_status)) // <-- this should be redumdant a check
1054 i_status = WTERMSIG (i_status);
1055 msg_Warn (p_object, "child %s (PID %d) exited on signal %d (%s)",
1056 ppsz_argv[0], (int)pid, i_status, strsignal (i_status));
1059 #elif defined( WIN32 ) && !defined( UNDER_CE )
1060 SECURITY_ATTRIBUTES saAttr;
1061 PROCESS_INFORMATION piProcInfo;
1062 STARTUPINFO siStartInfo;
1063 BOOL bFuncRetn = FALSE;
1064 HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
1066 char *psz_cmd = NULL, *p_env = NULL, *p = NULL;
1070 /* Set the bInheritHandle flag so pipe handles are inherited. */
1071 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
1072 saAttr.bInheritHandle = TRUE;
1073 saAttr.lpSecurityDescriptor = NULL;
1075 /* Create a pipe for the child process's STDOUT. */
1076 if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
1078 msg_Err( p_object, "stdout pipe creation failed" );
1082 /* Ensure the read handle to the pipe for STDOUT is not inherited. */
1083 SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
1085 /* Create a pipe for the child process's STDIN. */
1086 if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
1088 msg_Err( p_object, "stdin pipe creation failed" );
1092 /* Ensure the write handle to the pipe for STDIN is not inherited. */
1093 SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
1095 /* Set up members of the PROCESS_INFORMATION structure. */
1096 ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
1098 /* Set up members of the STARTUPINFO structure. */
1099 ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
1100 siStartInfo.cb = sizeof(STARTUPINFO);
1101 siStartInfo.hStdError = hChildStdoutWr;
1102 siStartInfo.hStdOutput = hChildStdoutWr;
1103 siStartInfo.hStdInput = hChildStdinRd;
1104 siStartInfo.wShowWindow = SW_HIDE;
1105 siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
1107 /* Set up the command line. */
1108 psz_cmd = malloc(32768);
1113 ppsz_parser = &ppsz_argv[0];
1114 while ( ppsz_parser[0] != NULL && i_size > 0 )
1116 /* Protect the last argument with quotes ; the other arguments
1117 * are supposed to be already protected because they have been
1118 * passed as a command-line option. */
1119 if ( ppsz_parser[1] == NULL )
1121 strncat( psz_cmd, "\"", i_size );
1124 strncat( psz_cmd, *ppsz_parser, i_size );
1125 i_size -= strlen( *ppsz_parser );
1126 if ( ppsz_parser[1] == NULL )
1128 strncat( psz_cmd, "\"", i_size );
1131 strncat( psz_cmd, " ", i_size );
1136 /* Set up the environment. */
1137 p = p_env = malloc(32768);
1145 ppsz_parser = &ppsz_env[0];
1146 while ( *ppsz_parser != NULL && i_size > 0 )
1148 memcpy( p, *ppsz_parser,
1149 __MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
1150 p += strlen(*ppsz_parser) + 1;
1151 i_size -= strlen(*ppsz_parser) + 1;
1156 /* Create the child process. */
1157 bFuncRetn = CreateProcess( NULL,
1158 psz_cmd, // command line
1159 NULL, // process security attributes
1160 NULL, // primary thread security attributes
1161 TRUE, // handles are inherited
1162 0, // creation flags
1165 &siStartInfo, // STARTUPINFO pointer
1166 &piProcInfo ); // receives PROCESS_INFORMATION
1171 if ( bFuncRetn == 0 )
1173 msg_Err( p_object, "child creation failed" );
1177 /* Read from a file and write its contents to a pipe. */
1178 while ( i_in > 0 && !p_object->b_die )
1181 if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
1187 /* Close the pipe handle so the child process stops reading. */
1188 CloseHandle(hChildStdinWr);
1190 /* Close the write end of the pipe before reading from the
1191 * read end of the pipe. */
1192 CloseHandle(hChildStdoutWr);
1194 /* Read output from the child process. */
1199 *pp_data = malloc( 1025 ); /* +1 for \0 */
1201 while ( !p_object->b_die )
1204 if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
1209 *pp_data = realloc( *pp_data, *pi_data + 1025 );
1212 while ( !p_object->b_die
1213 && !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
1214 && i_status != STILL_ACTIVE )
1217 CloseHandle(piProcInfo.hProcess);
1218 CloseHandle(piProcInfo.hThread);
1222 "child %s returned with error code %ld",
1223 ppsz_argv[0], i_status );
1226 msg_Err( p_object, "vlc_execve called but no implementation is available" );
1231 if (*pp_data == NULL)
1234 (*pp_data)[*pi_data] = '\0';