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 *****************************************************************************/
28 #include <string.h> /* strdup() */
39 #if defined(HAVE_ICONV)
48 # include <sys/time.h>
51 # include <sys/wait.h>
54 #if defined(WIN32) || defined(UNDER_CE)
61 # define WIN32_LEAN_AND_MEAN
66 # define strcoll strcmp
69 /*****************************************************************************
70 * getenv: just in case, but it should never be called
71 *****************************************************************************/
72 #if !defined( HAVE_GETENV )
73 char *vlc_getenv( const char *name )
79 /*****************************************************************************
80 * strdup: returns a malloc'd copy of a string
81 *****************************************************************************/
82 #if !defined( HAVE_STRDUP )
83 char *vlc_strdup( const char *string )
85 return strndup( string, strlen( string ) );
89 /*****************************************************************************
90 * strndup: returns a malloc'd copy of at most n bytes of string
91 * Does anyone know whether or not it will be present in Jaguar?
92 *****************************************************************************/
93 #if !defined( HAVE_STRNDUP )
94 char *vlc_strndup( const char *string, size_t n )
97 size_t len = strlen( string );
99 len = __MIN( len, n );
100 psz = (char*)malloc( len + 1 );
104 memcpy( (void*)psz, (const void*)string, len );
112 /*****************************************************************************
113 * strcasecmp: compare two strings ignoring case
114 *****************************************************************************/
115 #if !defined( HAVE_STRCASECMP ) && !defined( HAVE_STRICMP )
116 int vlc_strcasecmp( const char *s1, const char *s2 )
119 if( !s1 || !s2 ) return -1;
126 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
130 if( !*s1 && !*s2 ) return 0;
131 else return (*s1 ? 1 : -1);
135 /*****************************************************************************
136 * strncasecmp: compare n chars from two strings ignoring case
137 *****************************************************************************/
138 #if !defined( HAVE_STRNCASECMP ) && !defined( HAVE_STRNICMP )
139 int vlc_strncasecmp( const char *s1, const char *s2, size_t n )
142 if( !s1 || !s2 ) return -1;
144 while( n > 0 && *s1 && *s2 )
149 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
153 if( !n || (!*s1 && !*s2) ) return 0;
154 else return (*s1 ? 1 : -1);
158 /******************************************************************************
159 * strcasestr: find a substring (little) in another substring (big)
160 * Case sensitive. Return NULL if not found, return big if little == null
161 *****************************************************************************/
162 #if !defined( HAVE_STRCASESTR ) && !defined( HAVE_STRISTR )
163 char * vlc_strcasestr( const char *psz_big, const char *psz_little )
165 char *p_pos = (char *)psz_big;
167 if( !psz_big || !psz_little || !*psz_little ) return p_pos;
171 if( toupper( *p_pos ) == toupper( *psz_little ) )
173 char * psz_cur1 = p_pos + 1;
174 char * psz_cur2 = (char *)psz_little + 1;
175 while( *psz_cur1 && *psz_cur2 &&
176 toupper( *psz_cur1 ) == toupper( *psz_cur2 ) )
181 if( !*psz_cur2 ) return p_pos;
189 /*****************************************************************************
191 *****************************************************************************/
192 #if !defined(HAVE_VASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
193 int vlc_vasprintf(char **strp, const char *fmt, va_list ap)
195 /* Guess we need no more than 100 bytes. */
197 char *p = malloc( i_size );
208 /* Try to print in the allocated space. */
209 n = vsnprintf( p, i_size, fmt, ap );
211 /* If that worked, return the string. */
212 if (n > -1 && n < i_size)
217 /* Else try again with more space. */
218 if (n > -1) /* glibc 2.1 */
220 i_size = n+1; /* precisely what is needed */
224 i_size *= 2; /* twice the old size */
226 if( (p = realloc( p, i_size ) ) == NULL)
235 /*****************************************************************************
237 *****************************************************************************/
238 #if !defined(HAVE_ASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
239 int vlc_asprintf( char **strp, const char *fmt, ... )
244 va_start( args, fmt );
245 i_ret = vasprintf( strp, fmt, args );
252 /*****************************************************************************
253 * atof: convert a string to a double.
254 *****************************************************************************/
255 #if !defined( HAVE_ATOF )
256 double vlc_atof( const char *nptr )
260 int i_len = strlen( nptr ) + 1;
262 psz_tmp = malloc( i_len * sizeof(wchar_t) );
263 MultiByteToWideChar( CP_ACP, 0, nptr, -1, psz_tmp, i_len );
264 f_result = wcstod( psz_tmp, NULL );
271 /*****************************************************************************
272 * strtoll: convert a string to a 64 bits int.
273 *****************************************************************************/
274 #if !defined( HAVE_STRTOLL )
275 int64_t vlc_strtoll( const char *nptr, char **endptr, int base )
278 int sign = 1, newbase = base ? base : 10;
280 while( isspace(*nptr) ) nptr++;
288 /* Try to detect base */
301 if( base && newbase != base )
303 if( endptr ) *endptr = (char *)nptr;
310 while( *nptr >= '0' && *nptr <= '9' )
313 i_value += ( *nptr++ - '0' );
315 if( endptr ) *endptr = (char *)nptr;
319 while( (*nptr >= '0' && *nptr <= '9') ||
320 (*nptr >= 'a' && *nptr <= 'f') ||
321 (*nptr >= 'A' && *nptr <= 'F') )
324 if(*nptr >= '0' && *nptr <= '9') i_valc = *nptr - '0';
325 else if(*nptr >= 'a' && *nptr <= 'f') i_valc = *nptr - 'a' +10;
326 else if(*nptr >= 'A' && *nptr <= 'F') i_valc = *nptr - 'A' +10;
331 if( endptr ) *endptr = (char *)nptr;
335 i_value = strtol( nptr, endptr, newbase );
339 return i_value * sign;
343 /*****************************************************************************
344 * atoll: convert a string to a 64 bits int.
345 *****************************************************************************/
346 #if !defined( HAVE_ATOLL )
347 int64_t vlc_atoll( const char *nptr )
349 return strtoll( nptr, (char **)NULL, 10 );
353 /*****************************************************************************
354 * lldiv: returns quotient and remainder
355 *****************************************************************************/
356 #if defined(SYS_BEOS) \
357 || (defined (__FreeBSD__) && (__FreeBSD__ < 5))
358 lldiv_t vlc_lldiv( long long numer, long long denom )
361 d.quot = numer / denom;
362 d.rem = numer % denom;
369 * Copy a string to a sized buffer. The result is always nul-terminated
370 * (contrary to strncpy()).
372 * @param dest destination buffer
373 * @param src string to be copied
374 * @param len maximum number of characters to be copied plus one for the
377 * @return strlen(src)
380 extern size_t vlc_strlcpy (char *tgt, const char *src, size_t bufsize)
384 for (length = 1; (length < bufsize) && *src; length++)
397 /*****************************************************************************
398 * vlc_*dir_wrapper: wrapper under Windows to return the list of drive letters
399 * when called with an empty argument or just '\'
400 *****************************************************************************/
401 #if defined(WIN32) && !defined(UNDER_CE)
404 typedef struct vlc_DIR
408 struct _wdirent dd_dir;
409 vlc_bool_t b_insert_back;
412 void *vlc_wopendir( const wchar_t *wpath )
417 if ( wpath == NULL || wpath[0] == '\0'
418 || (wcscmp (wpath, L"\\") == 0) )
420 /* Special mode to list drive letters */
421 p_dir = malloc( sizeof(vlc_DIR) );
422 p_dir->p_real_dir = NULL;
423 p_dir->i_drives = GetLogicalDrives();
424 return (void *)p_dir;
427 p_real_dir = _wopendir( wpath );
428 if ( p_real_dir == NULL )
431 p_dir = malloc( sizeof(vlc_DIR) );
432 p_dir->p_real_dir = p_real_dir;
434 assert (wpath[0]); // wpath[1] is defined
435 p_dir->b_insert_back = !wcscmp (wpath + 1, L":\\");
436 return (void *)p_dir;
439 struct _wdirent *vlc_wreaddir( void *_p_dir )
441 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
445 if ( p_dir->p_real_dir != NULL )
447 if ( p_dir->b_insert_back )
449 /* Adds "..", gruik! */
450 p_dir->dd_dir.d_ino = 0;
451 p_dir->dd_dir.d_reclen = 0;
452 p_dir->dd_dir.d_namlen = 2;
453 wcscpy( p_dir->dd_dir.d_name, L".." );
454 p_dir->b_insert_back = VLC_FALSE;
455 return &p_dir->dd_dir;
458 return _wreaddir( p_dir->p_real_dir );
461 /* Drive letters mode */
462 i_drives = p_dir->i_drives;
464 return NULL; /* end */
466 for ( i = 0; i < sizeof(DWORD)*8; i++, i_drives >>= 1 )
467 if ( i_drives & 1 ) break;
470 return NULL; /* this should not happen */
472 swprintf( p_dir->dd_dir.d_name, L"%c:\\", 'A' + i );
473 p_dir->dd_dir.d_namlen = wcslen(p_dir->dd_dir.d_name);
474 p_dir->i_drives &= ~(1UL << i);
475 return &p_dir->dd_dir;
478 int vlc_wclosedir( void *_p_dir )
480 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
483 if ( p_dir->p_real_dir != NULL )
484 i_ret = _wclosedir( p_dir->p_real_dir );
490 void vlc_rewinddir( void *_p_dir )
492 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
494 if ( p_dir->p_real_dir != NULL )
495 _wrewinddir( p_dir->p_real_dir );
498 void vlc_seekdir( void *_p_dir, long loc)
500 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
502 if ( p_dir->p_real_dir != NULL )
503 _wseekdir( p_dir->p_real_dir, loc );
506 long vlc_telldir( void *_p_dir )
508 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
510 if ( p_dir->p_real_dir != NULL )
511 return _wtelldir( p_dir->p_real_dir );
516 /*****************************************************************************
517 * scandir: scan a directory alpha-sorted
518 *****************************************************************************/
519 #if !defined( HAVE_SCANDIR )
520 /* FIXME: I suspect this is dead code -> utf8_scandir */
526 int vlc_alphasort( const struct dirent **a, const struct dirent **b )
528 return strcoll( (*a)->d_name, (*b)->d_name );
531 int vlc_scandir( const char *name, struct dirent ***namelist,
532 int (*filter) ( const struct dirent * ),
533 int (*compar) ( const struct dirent **,
534 const struct dirent ** ) )
537 struct dirent * p_content;
538 struct dirent ** pp_list;
541 if( !namelist || !( p_dir = opendir( name ) ) ) return -1;
545 while( ( p_content = readdir( p_dir ) ) )
547 if( filter && !filter( p_content ) )
551 pp_list = realloc( pp_list, ( ret + 1 ) * sizeof( struct dirent * ) );
552 size = sizeof( struct dirent ) + strlen( p_content->d_name ) + 1;
553 pp_list[ret] = malloc( size );
554 memcpy( pp_list[ret], p_content, size );
562 qsort( pp_list, ret, sizeof( struct dirent * ),
563 (int (*)(const void *, const void *)) compar );
571 #if defined (WIN32) || !defined (HAVE_SHARED_LIBVLC)
572 /*****************************************************************************
573 * dgettext: gettext for plugins.
574 *****************************************************************************/
575 char *vlc_dgettext( const char *package, const char *msgid )
577 #if defined( ENABLE_NLS ) \
578 && ( defined(HAVE_GETTEXT) || defined(HAVE_INCLUDED_GETTEXT) )
579 return dgettext( package, msgid );
581 return (char *)msgid;
586 /*****************************************************************************
587 * count_utf8_string: returns the number of characters in the string.
588 *****************************************************************************/
589 static int count_utf8_string( const char *psz_string )
591 int i = 0, i_count = 0;
592 while( psz_string[ i ] != 0 )
594 if( ((unsigned char *)psz_string)[ i ] < 0x80UL ) i_count++;
600 /*****************************************************************************
601 * wraptext: inserts \n at convenient places to wrap the text.
602 * Returns the modified string in a new buffer.
603 *****************************************************************************/
604 char *vlc_wraptext( const char *psz_text, int i_line )
607 char *psz_line, *psz_new_text;
609 psz_line = psz_new_text = strdup( psz_text );
611 i_len = count_utf8_string( psz_text );
613 while( i_len > i_line )
615 /* Look if there is a newline somewhere. */
616 char *psz_parser = psz_line;
618 while( i_count <= i_line && *psz_parser != '\n' )
620 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
624 if( *psz_parser == '\n' )
626 i_len -= (i_count + 1);
627 psz_line = psz_parser + 1;
631 /* Find the furthest space. */
632 while( psz_parser > psz_line && *psz_parser != ' ' )
634 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser--;
638 if( *psz_parser == ' ' )
641 i_len -= (i_count + 1);
642 psz_line = psz_parser + 1;
646 /* Wrapping has failed. Find the first space or newline */
647 while( i_count < i_len && *psz_parser != ' ' && *psz_parser != '\n' )
649 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
653 if( i_count < i_len ) *psz_parser = '\n';
654 i_len -= (i_count + 1);
655 psz_line = psz_parser + 1;
661 /*****************************************************************************
663 *****************************************************************************/
664 vlc_iconv_t vlc_iconv_open( const char *tocode, const char *fromcode )
666 #if defined(HAVE_ICONV)
667 return iconv_open( tocode, fromcode );
673 size_t vlc_iconv( vlc_iconv_t cd, const char **inbuf, size_t *inbytesleft,
674 char **outbuf, size_t *outbytesleft )
676 #if defined(HAVE_ICONV)
677 return iconv( cd, (ICONV_CONST char **)inbuf, inbytesleft,
678 outbuf, outbytesleft );
682 if (inbytesleft == NULL || outbytesleft == NULL)
687 i_bytes = __MIN(*inbytesleft, *outbytesleft);
688 if( !inbuf || !outbuf || !i_bytes ) return (size_t)(-1);
689 memcpy( *outbuf, *inbuf, i_bytes );
692 inbytesleft -= i_bytes;
693 outbytesleft -= i_bytes;
698 int vlc_iconv_close( vlc_iconv_t cd )
700 #if defined(HAVE_ICONV)
701 return iconv_close( cd );
707 /*****************************************************************************
709 * (adapted from libavcodec, author Michael Niedermayer <michaelni@gmx.at>)
710 *****************************************************************************/
711 vlc_bool_t vlc_ureduce( unsigned *pi_dst_nom, unsigned *pi_dst_den,
712 uint64_t i_nom, uint64_t i_den, uint64_t i_max )
714 vlc_bool_t b_exact = 1;
724 i_gcd = GCD( i_nom, i_den );
728 if( i_max == 0 ) i_max = I64C(0xFFFFFFFF);
730 if( i_nom > i_max || i_den > i_max )
732 uint64_t i_a0_num = 0, i_a0_den = 1, i_a1_num = 1, i_a1_den = 0;
737 uint64_t i_x = i_nom / i_den;
738 uint64_t i_a2n = i_x * i_a1_num + i_a0_num;
739 uint64_t i_a2d = i_x * i_a1_den + i_a0_den;
741 if( i_a2n > i_max || i_a2d > i_max ) break;
745 i_a0_num = i_a1_num; i_a0_den = i_a1_den;
746 i_a1_num = i_a2n; i_a1_den = i_a2d;
747 if( i_nom == 0 ) break;
748 i_x = i_nom; i_nom = i_den; i_den = i_x;
760 /*************************************************************************
761 * vlc_parse_cmdline: Command line parsing into elements.
763 * The command line is composed of space/tab separated arguments.
764 * Quotes can be used as argument delimiters and a backslash can be used to
766 *************************************************************************/
767 static void find_end_quote( char **s, char **ppsz_parser, int i_quote )
776 (*ppsz_parser)++; (*s)++;
779 else if( **s == '"' || **s == '\'' )
781 /* Preceeded by a number of '\' which we erase. */
782 *ppsz_parser -= i_bcount / 2;
785 /* '\\' followed by a '"' or '\'' */
788 (*ppsz_parser)++; (*s)++;
800 /* Different quoting */
803 (*ppsz_parser)++; (*s)++;
804 find_end_quote( s, ppsz_parser, i_quote );
806 (*ppsz_parser)++; (*s)++;
813 /* A regular character */
815 (*ppsz_parser)++; (*s)++;
821 char **vlc_parse_cmdline( const char *psz_cmdline, int *i_args )
825 char *s, *psz_parser, *psz_arg, *psz_orig;
828 if( !psz_cmdline ) return 0;
829 psz_orig = strdup( psz_cmdline );
830 psz_arg = psz_parser = s = psz_orig;
834 if( *s == '\t' || *s == ' ' )
836 /* We have a complete argument */
838 TAB_APPEND( argc, argv, strdup(psz_arg) );
840 /* Skip trailing spaces/tabs */
841 do{ s++; } while( *s == '\t' || *s == ' ' );
844 psz_arg = psz_parser = s;
847 else if( *s == '\\' )
849 *psz_parser++ = *s++;
852 else if( *s == '"' || *s == '\'' )
854 if( ( i_bcount & 1 ) == 0 )
856 /* Preceeded by an even number of '\', this is half that
857 * number of '\', plus a quote which we erase. */
859 psz_parser -= i_bcount / 2;
861 find_end_quote( &s, &psz_parser, i_quote );
866 /* Preceeded by an odd number of '\', this is half that
867 * number of '\' followed by a '"' */
868 psz_parser = psz_parser - i_bcount/2 - 1;
876 /* A regular character */
877 *psz_parser++ = *s++;
882 /* Take care of the last arg */
886 TAB_APPEND( argc, argv, strdup(psz_arg) );
889 if( i_args ) *i_args = argc;
894 /*************************************************************************
895 * vlc_execve: Execute an external program with a given environment,
896 * wait until it finishes and return its standard output
897 *************************************************************************/
898 int __vlc_execve( vlc_object_t *p_object, int i_argc, char **ppsz_argv,
899 char **ppsz_env, char *psz_cwd, char *p_in, int i_in,
900 char **pp_data, int *pi_data )
910 if ( (i_child_pid = fork()) == -1 )
912 msg_Err( p_object, "unable to fork (%s)", strerror(errno) );
916 if ( i_child_pid == 0 )
928 if ( psz_cwd != NULL )
930 execve( ppsz_argv[0], ppsz_argv, ppsz_env );
937 close( pi_stdin[0] );
940 *pp_data = malloc( 1025 ); /* +1 for \0 */
942 while ( !p_object->b_die )
945 fd_set readfds, writefds;
949 FD_ZERO( &writefds );
950 FD_SET( pi_stdout[0], &readfds );
952 FD_SET( pi_stdin[0], &writefds );
957 i_ret = select( pi_stdin[0] > pi_stdout[0] ? pi_stdin[0] + 1 :
958 pi_stdout[0] + 1, &readfds, &writefds, NULL, &tv );
961 if ( FD_ISSET( pi_stdout[0], &readfds ) )
963 ssize_t i_read = read( pi_stdout[0], &(*pp_data)[*pi_data],
968 *pp_data = realloc( *pp_data, *pi_data + 1025 );
971 if ( FD_ISSET( pi_stdin[0], &writefds ) )
973 ssize_t i_write = write( pi_stdin[0], p_in, __MIN(i_in, 1024) );
981 close( pi_stdin[0] );
985 if ( waitpid( i_child_pid, &i_status, WNOHANG ) == i_child_pid )
987 if ( WIFEXITED( i_status ) )
989 if ( WEXITSTATUS( i_status ) )
992 "child %s returned with error code %d",
993 ppsz_argv[0], WEXITSTATUS( i_status ) );
998 if ( WIFSIGNALED( i_status ) )
1001 "child %s quit on signal %d", ppsz_argv[0],
1002 WTERMSIG( i_status ) );
1006 close( pi_stdin[0] );
1007 close( pi_stdout[0] );
1011 if ( i_ret < 0 && errno != EINTR )
1013 msg_Warn( p_object, "select failed (%s)", strerror(errno) );
1017 #elif defined( WIN32 ) && !defined( UNDER_CE )
1018 SECURITY_ATTRIBUTES saAttr;
1019 PROCESS_INFORMATION piProcInfo;
1020 STARTUPINFO siStartInfo;
1021 BOOL bFuncRetn = FALSE;
1022 HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
1024 char *psz_cmd, *p_env, *p;
1028 /* Set the bInheritHandle flag so pipe handles are inherited. */
1029 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
1030 saAttr.bInheritHandle = TRUE;
1031 saAttr.lpSecurityDescriptor = NULL;
1033 /* Create a pipe for the child process's STDOUT. */
1034 if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
1036 msg_Err( p_object, "stdout pipe creation failed" );
1040 /* Ensure the read handle to the pipe for STDOUT is not inherited. */
1041 SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
1043 /* Create a pipe for the child process's STDIN. */
1044 if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
1046 msg_Err( p_object, "stdin pipe creation failed" );
1050 /* Ensure the write handle to the pipe for STDIN is not inherited. */
1051 SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
1053 /* Set up members of the PROCESS_INFORMATION structure. */
1054 ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
1056 /* Set up members of the STARTUPINFO structure. */
1057 ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
1058 siStartInfo.cb = sizeof(STARTUPINFO);
1059 siStartInfo.hStdError = hChildStdoutWr;
1060 siStartInfo.hStdOutput = hChildStdoutWr;
1061 siStartInfo.hStdInput = hChildStdinRd;
1062 siStartInfo.wShowWindow = SW_HIDE;
1063 siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
1065 /* Set up the command line. */
1066 psz_cmd = malloc(32768);
1069 ppsz_parser = &ppsz_argv[0];
1070 while ( ppsz_parser[0] != NULL && i_size > 0 )
1072 /* Protect the last argument with quotes ; the other arguments
1073 * are supposed to be already protected because they have been
1074 * passed as a command-line option. */
1075 if ( ppsz_parser[1] == NULL )
1077 strncat( psz_cmd, "\"", i_size );
1080 strncat( psz_cmd, *ppsz_parser, i_size );
1081 i_size -= strlen( *ppsz_parser );
1082 if ( ppsz_parser[1] == NULL )
1084 strncat( psz_cmd, "\"", i_size );
1087 strncat( psz_cmd, " ", i_size );
1092 /* Set up the environment. */
1093 p = p_env = malloc(32768);
1095 ppsz_parser = &ppsz_env[0];
1096 while ( *ppsz_parser != NULL && i_size > 0 )
1098 memcpy( p, *ppsz_parser,
1099 __MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
1100 p += strlen(*ppsz_parser) + 1;
1101 i_size -= strlen(*ppsz_parser) + 1;
1106 /* Create the child process. */
1107 bFuncRetn = CreateProcess( NULL,
1108 psz_cmd, // command line
1109 NULL, // process security attributes
1110 NULL, // primary thread security attributes
1111 TRUE, // handles are inherited
1112 0, // creation flags
1115 &siStartInfo, // STARTUPINFO pointer
1116 &piProcInfo ); // receives PROCESS_INFORMATION
1121 if ( bFuncRetn == 0 )
1123 msg_Err( p_object, "child creation failed" );
1127 /* Read from a file and write its contents to a pipe. */
1128 while ( i_in > 0 && !p_object->b_die )
1131 if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
1137 /* Close the pipe handle so the child process stops reading. */
1138 CloseHandle(hChildStdinWr);
1140 /* Close the write end of the pipe before reading from the
1141 * read end of the pipe. */
1142 CloseHandle(hChildStdoutWr);
1144 /* Read output from the child process. */
1146 *pp_data = malloc( 1025 ); /* +1 for \0 */
1148 while ( !p_object->b_die )
1151 if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
1156 *pp_data = realloc( *pp_data, *pi_data + 1025 );
1159 while ( !p_object->b_die
1160 && !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
1161 && i_status != STILL_ACTIVE )
1164 CloseHandle(piProcInfo.hProcess);
1165 CloseHandle(piProcInfo.hThread);
1169 "child %s returned with error code %ld",
1170 ppsz_argv[0], i_status );
1173 msg_Err( p_object, "vlc_execve called but no implementation is available" );
1178 (*pp_data)[*pi_data] = '\0';