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)
55 # define WIN32_LEAN_AND_MEAN
60 # define strcoll strcmp
63 /*****************************************************************************
64 * getenv: just in case, but it should never be called
65 *****************************************************************************/
66 #if !defined( HAVE_GETENV )
67 char *vlc_getenv( const char *name )
73 /*****************************************************************************
74 * strdup: returns a malloc'd copy of a string
75 *****************************************************************************/
76 #if !defined( HAVE_STRDUP )
77 char *vlc_strdup( const char *string )
79 return strndup( string, strlen( string ) );
83 /*****************************************************************************
84 * strndup: returns a malloc'd copy of at most n bytes of string
85 * Does anyone know whether or not it will be present in Jaguar?
86 *****************************************************************************/
87 #if !defined( HAVE_STRNDUP )
88 char *vlc_strndup( const char *string, size_t n )
91 size_t len = strlen( string );
93 len = __MIN( len, n );
94 psz = (char*)malloc( len + 1 );
98 memcpy( (void*)psz, (const void*)string, len );
106 /*****************************************************************************
107 * strcasecmp: compare two strings ignoring case
108 *****************************************************************************/
109 #if !defined( HAVE_STRCASECMP ) && !defined( HAVE_STRICMP )
110 int vlc_strcasecmp( const char *s1, const char *s2 )
113 if( !s1 || !s2 ) return -1;
120 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
124 if( !*s1 && !*s2 ) return 0;
125 else return (*s1 ? 1 : -1);
129 /*****************************************************************************
130 * strncasecmp: compare n chars from two strings ignoring case
131 *****************************************************************************/
132 #if !defined( HAVE_STRNCASECMP ) && !defined( HAVE_STRNICMP )
133 int vlc_strncasecmp( const char *s1, const char *s2, size_t n )
136 if( !s1 || !s2 ) return -1;
138 while( n > 0 && *s1 && *s2 )
143 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
147 if( !n || (!*s1 && !*s2) ) return 0;
148 else return (*s1 ? 1 : -1);
152 /******************************************************************************
153 * strcasestr: find a substring (little) in another substring (big)
154 * Case sensitive. Return NULL if not found, return big if little == null
155 *****************************************************************************/
156 #if !defined( HAVE_STRCASESTR ) && !defined( HAVE_STRISTR )
157 char * vlc_strcasestr( const char *psz_big, const char *psz_little )
159 char *p_pos = (char *)psz_big;
161 if( !psz_big || !psz_little || !*psz_little ) return p_pos;
165 if( toupper( *p_pos ) == toupper( *psz_little ) )
167 char * psz_cur1 = p_pos + 1;
168 char * psz_cur2 = (char *)psz_little + 1;
169 while( *psz_cur1 && *psz_cur2 &&
170 toupper( *psz_cur1 ) == toupper( *psz_cur2 ) )
175 if( !*psz_cur2 ) return p_pos;
183 /*****************************************************************************
185 *****************************************************************************/
186 #if !defined(HAVE_VASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
187 int vlc_vasprintf(char **strp, const char *fmt, va_list ap)
189 /* Guess we need no more than 100 bytes. */
191 char *p = malloc( i_size );
202 /* Try to print in the allocated space. */
203 n = vsnprintf( p, i_size, fmt, ap );
205 /* If that worked, return the string. */
206 if (n > -1 && n < i_size)
211 /* Else try again with more space. */
212 if (n > -1) /* glibc 2.1 */
214 i_size = n+1; /* precisely what is needed */
218 i_size *= 2; /* twice the old size */
220 if( (p = realloc( p, i_size ) ) == NULL)
229 /*****************************************************************************
231 *****************************************************************************/
232 #if !defined(HAVE_ASPRINTF) || defined(__APPLE__) || defined(SYS_BEOS)
233 int vlc_asprintf( char **strp, const char *fmt, ... )
238 va_start( args, fmt );
239 i_ret = vasprintf( strp, fmt, args );
246 /*****************************************************************************
247 * atof: convert a string to a double.
248 *****************************************************************************/
249 #if !defined( HAVE_ATOF )
250 double vlc_atof( const char *nptr )
254 int i_len = strlen( nptr ) + 1;
256 psz_tmp = malloc( i_len * sizeof(wchar_t) );
257 MultiByteToWideChar( CP_ACP, 0, nptr, -1, psz_tmp, i_len );
258 f_result = wcstod( psz_tmp, NULL );
265 /*****************************************************************************
266 * strtoll: convert a string to a 64 bits int.
267 *****************************************************************************/
268 #if !defined( HAVE_STRTOLL )
269 int64_t vlc_strtoll( const char *nptr, char **endptr, int base )
272 int sign = 1, newbase = base ? base : 10;
274 while( isspace(*nptr) ) nptr++;
282 /* Try to detect base */
295 if( base && newbase != base )
297 if( endptr ) *endptr = (char *)nptr;
304 while( *nptr >= '0' && *nptr <= '9' )
307 i_value += ( *nptr++ - '0' );
309 if( endptr ) *endptr = (char *)nptr;
313 while( (*nptr >= '0' && *nptr <= '9') ||
314 (*nptr >= 'a' && *nptr <= 'f') ||
315 (*nptr >= 'A' && *nptr <= 'F') )
318 if(*nptr >= '0' && *nptr <= '9') i_valc = *nptr - '0';
319 else if(*nptr >= 'a' && *nptr <= 'f') i_valc = *nptr - 'a' +10;
320 else if(*nptr >= 'A' && *nptr <= 'F') i_valc = *nptr - 'A' +10;
325 if( endptr ) *endptr = (char *)nptr;
329 i_value = strtol( nptr, endptr, newbase );
333 return i_value * sign;
337 /*****************************************************************************
338 * atoll: convert a string to a 64 bits int.
339 *****************************************************************************/
340 #if !defined( HAVE_ATOLL )
341 int64_t vlc_atoll( const char *nptr )
343 return strtoll( nptr, (char **)NULL, 10 );
347 /*****************************************************************************
348 * lldiv: returns quotient and remainder
349 *****************************************************************************/
350 #if defined(SYS_BEOS) \
351 || (defined (__FreeBSD__) && (__FreeBSD__ < 5))
352 lldiv_t vlc_lldiv( long long numer, long long denom )
355 d.quot = numer / denom;
356 d.rem = numer % denom;
363 * Copy a string to a sized buffer. The result is always nul-terminated
364 * (contrary to strncpy()).
366 * @param dest destination buffer
367 * @param src string to be copied
368 * @param len maximum number of characters to be copied plus one for the
371 * @return strlen(src)
374 extern size_t vlc_strlcpy (char *tgt, const char *src, size_t bufsize)
378 for (length = 1; (length < bufsize) && *src; length++)
391 /*****************************************************************************
392 * vlc_*dir_wrapper: wrapper under Windows to return the list of drive letters
393 * when called with an empty argument or just '\'
394 *****************************************************************************/
395 #if defined(WIN32) && !defined(UNDER_CE)
396 typedef struct vlc_DIR
400 struct dirent dd_dir;
401 vlc_bool_t b_insert_back;
404 void *vlc_opendir_wrapper( const char *psz_path )
409 if ( psz_path == NULL || psz_path[0] == '\0'
410 || (psz_path[0] == '\\' && psz_path[1] == '\0') )
412 /* Special mode to list drive letters */
413 p_dir = malloc( sizeof(vlc_DIR) );
414 p_dir->p_real_dir = NULL;
415 p_dir->i_drives = GetLogicalDrives();
416 return (void *)p_dir;
419 if (GetVersion() < 0x80000000)
421 /* for Windows NT and above */
422 wchar_t wpath[MAX_PATH + 1];
424 if (!MultiByteToWideChar (CP_UTF8, 0, psz_path, -1, wpath, MAX_PATH))
426 wpath[MAX_PATH] = L'\0';
427 p_real_dir = _wopendir( wpath );
430 if ( p_real_dir == NULL )
433 p_dir = malloc( sizeof(vlc_DIR) );
434 p_dir->p_real_dir = p_real_dir;
435 p_dir->b_insert_back = ( psz_path[1] == ':' && psz_path[2] == '\\'
436 && psz_path[3] =='\0' );
437 return (void *)p_dir;
440 struct dirent *vlc_readdir_wrapper( void *_p_dir )
442 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
446 if ( p_dir->p_real_dir != NULL )
448 if ( p_dir->b_insert_back )
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 strcpy( p_dir->dd_dir.d_name, ".." );
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 sprintf( p_dir->dd_dir.d_name, "%c:\\", 'A' + i );
473 p_dir->dd_dir.d_namlen = strlen(p_dir->dd_dir.d_name);
474 p_dir->i_drives &= ~(1UL << i);
475 return &p_dir->dd_dir;
478 int vlc_closedir_wrapper( void *_p_dir )
480 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
482 if ( p_dir->p_real_dir != NULL )
484 int i_ret = _wclosedir( p_dir->p_real_dir );
493 void *vlc_opendir_wrapper( const char *psz_path )
495 return (void *)opendir( psz_path );
497 struct dirent *vlc_readdir_wrapper( void *_p_dir )
499 return readdir( (DIR *)_p_dir );
501 int vlc_closedir_wrapper( void *_p_dir )
503 return closedir( (DIR *)_p_dir );
507 /*****************************************************************************
508 * scandir: scan a directory alpha-sorted
509 *****************************************************************************/
510 #if !defined( HAVE_SCANDIR )
511 int vlc_alphasort( const struct dirent **a, const struct dirent **b )
513 return strcoll( (*a)->d_name, (*b)->d_name );
516 int vlc_scandir( const char *name, struct dirent ***namelist,
517 int (*filter) ( const struct dirent * ),
518 int (*compar) ( const struct dirent **,
519 const struct dirent ** ) )
522 struct dirent * p_content;
523 struct dirent ** pp_list;
526 if( !namelist || !( p_dir = vlc_opendir_wrapper( name ) ) ) return -1;
530 while( ( p_content = vlc_readdir_wrapper( p_dir ) ) )
532 if( filter && !filter( p_content ) )
536 pp_list = realloc( pp_list, ( ret + 1 ) * sizeof( struct dirent * ) );
537 size = sizeof( struct dirent ) + strlen( p_content->d_name ) + 1;
538 pp_list[ret] = malloc( size );
539 memcpy( pp_list[ret], p_content, size );
543 vlc_closedir_wrapper( p_dir );
547 qsort( pp_list, ret, sizeof( struct dirent * ),
548 (int (*)(const void *, const void *)) compar );
556 #if defined (WIN32) || !defined (HAVE_SHARED_LIBVLC)
557 /*****************************************************************************
558 * dgettext: gettext for plugins.
559 *****************************************************************************/
560 char *vlc_dgettext( const char *package, const char *msgid )
562 #if defined( ENABLE_NLS ) \
563 && ( defined(HAVE_GETTEXT) || defined(HAVE_INCLUDED_GETTEXT) )
564 return dgettext( package, msgid );
566 return (char *)msgid;
571 /*****************************************************************************
572 * count_utf8_string: returns the number of characters in the string.
573 *****************************************************************************/
574 static int count_utf8_string( const char *psz_string )
576 int i = 0, i_count = 0;
577 while( psz_string[ i ] != 0 )
579 if( ((unsigned char *)psz_string)[ i ] < 0x80UL ) i_count++;
585 /*****************************************************************************
586 * wraptext: inserts \n at convenient places to wrap the text.
587 * Returns the modified string in a new buffer.
588 *****************************************************************************/
589 char *vlc_wraptext( const char *psz_text, int i_line )
592 char *psz_line, *psz_new_text;
594 psz_line = psz_new_text = strdup( psz_text );
596 i_len = count_utf8_string( psz_text );
598 while( i_len > i_line )
600 /* Look if there is a newline somewhere. */
601 char *psz_parser = psz_line;
603 while( i_count <= i_line && *psz_parser != '\n' )
605 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
609 if( *psz_parser == '\n' )
611 i_len -= (i_count + 1);
612 psz_line = psz_parser + 1;
616 /* Find the furthest space. */
617 while( psz_parser > psz_line && *psz_parser != ' ' )
619 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser--;
623 if( *psz_parser == ' ' )
626 i_len -= (i_count + 1);
627 psz_line = psz_parser + 1;
631 /* Wrapping has failed. Find the first space or newline */
632 while( i_count < i_len && *psz_parser != ' ' && *psz_parser != '\n' )
634 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
638 if( i_count < i_len ) *psz_parser = '\n';
639 i_len -= (i_count + 1);
640 psz_line = psz_parser + 1;
646 /*****************************************************************************
648 *****************************************************************************/
649 vlc_iconv_t vlc_iconv_open( const char *tocode, const char *fromcode )
651 #if defined(HAVE_ICONV)
652 return iconv_open( tocode, fromcode );
658 size_t vlc_iconv( vlc_iconv_t cd, const char **inbuf, size_t *inbytesleft,
659 char **outbuf, size_t *outbytesleft )
661 #if defined(HAVE_ICONV)
662 return iconv( cd, (ICONV_CONST char **)inbuf, inbytesleft,
663 outbuf, outbytesleft );
667 if (inbytesleft == NULL || outbytesleft == NULL)
672 i_bytes = __MIN(*inbytesleft, *outbytesleft);
673 if( !inbuf || !outbuf || !i_bytes ) return (size_t)(-1);
674 memcpy( *outbuf, *inbuf, i_bytes );
677 inbytesleft -= i_bytes;
678 outbytesleft -= i_bytes;
683 int vlc_iconv_close( vlc_iconv_t cd )
685 #if defined(HAVE_ICONV)
686 return iconv_close( cd );
692 /*****************************************************************************
694 * (adapted from libavcodec, author Michael Niedermayer <michaelni@gmx.at>)
695 *****************************************************************************/
696 vlc_bool_t vlc_ureduce( unsigned *pi_dst_nom, unsigned *pi_dst_den,
697 uint64_t i_nom, uint64_t i_den, uint64_t i_max )
699 vlc_bool_t b_exact = 1;
709 i_gcd = GCD( i_nom, i_den );
713 if( i_max == 0 ) i_max = I64C(0xFFFFFFFF);
715 if( i_nom > i_max || i_den > i_max )
717 uint64_t i_a0_num = 0, i_a0_den = 1, i_a1_num = 1, i_a1_den = 0;
722 uint64_t i_x = i_nom / i_den;
723 uint64_t i_a2n = i_x * i_a1_num + i_a0_num;
724 uint64_t i_a2d = i_x * i_a1_den + i_a0_den;
726 if( i_a2n > i_max || i_a2d > i_max ) break;
730 i_a0_num = i_a1_num; i_a0_den = i_a1_den;
731 i_a1_num = i_a2n; i_a1_den = i_a2d;
732 if( i_nom == 0 ) break;
733 i_x = i_nom; i_nom = i_den; i_den = i_x;
745 /*************************************************************************
746 * vlc_parse_cmdline: Command line parsing into elements.
748 * The command line is composed of space/tab separated arguments.
749 * Quotes can be used as argument delimiters and a backslash can be used to
751 *************************************************************************/
752 static void find_end_quote( char **s, char **ppsz_parser, int i_quote )
761 (*ppsz_parser)++; (*s)++;
764 else if( **s == '"' || **s == '\'' )
766 /* Preceeded by a number of '\' which we erase. */
767 *ppsz_parser -= i_bcount / 2;
770 /* '\\' followed by a '"' or '\'' */
773 (*ppsz_parser)++; (*s)++;
785 /* Different quoting */
788 (*ppsz_parser)++; (*s)++;
789 find_end_quote( s, ppsz_parser, i_quote );
791 (*ppsz_parser)++; (*s)++;
798 /* A regular character */
800 (*ppsz_parser)++; (*s)++;
806 char **vlc_parse_cmdline( const char *psz_cmdline, int *i_args )
810 char *s, *psz_parser, *psz_arg, *psz_orig;
813 if( !psz_cmdline ) return 0;
814 psz_orig = strdup( psz_cmdline );
815 psz_arg = psz_parser = s = psz_orig;
819 if( *s == '\t' || *s == ' ' )
821 /* We have a complete argument */
823 TAB_APPEND( argc, argv, strdup(psz_arg) );
825 /* Skip trailing spaces/tabs */
826 do{ s++; } while( *s == '\t' || *s == ' ' );
829 psz_arg = psz_parser = s;
832 else if( *s == '\\' )
834 *psz_parser++ = *s++;
837 else if( *s == '"' || *s == '\'' )
839 if( ( i_bcount & 1 ) == 0 )
841 /* Preceeded by an even number of '\', this is half that
842 * number of '\', plus a quote which we erase. */
844 psz_parser -= i_bcount / 2;
846 find_end_quote( &s, &psz_parser, i_quote );
851 /* Preceeded by an odd number of '\', this is half that
852 * number of '\' followed by a '"' */
853 psz_parser = psz_parser - i_bcount/2 - 1;
861 /* A regular character */
862 *psz_parser++ = *s++;
867 /* Take care of the last arg */
871 TAB_APPEND( argc, argv, strdup(psz_arg) );
874 if( i_args ) *i_args = argc;
879 /*************************************************************************
880 * vlc_execve: Execute an external program with a given environment,
881 * wait until it finishes and return its standard output
882 *************************************************************************/
883 int __vlc_execve( vlc_object_t *p_object, int i_argc, char **ppsz_argv,
884 char **ppsz_env, char *psz_cwd, char *p_in, int i_in,
885 char **pp_data, int *pi_data )
895 if ( (i_child_pid = fork()) == -1 )
897 msg_Err( p_object, "unable to fork (%s)", strerror(errno) );
901 if ( i_child_pid == 0 )
913 if ( psz_cwd != NULL )
915 execve( ppsz_argv[0], ppsz_argv, ppsz_env );
922 close( pi_stdin[0] );
925 *pp_data = malloc( 1025 ); /* +1 for \0 */
927 while ( !p_object->b_die )
930 fd_set readfds, writefds;
934 FD_ZERO( &writefds );
935 FD_SET( pi_stdout[0], &readfds );
937 FD_SET( pi_stdin[0], &writefds );
942 i_ret = select( pi_stdin[0] > pi_stdout[0] ? pi_stdin[0] + 1 :
943 pi_stdout[0] + 1, &readfds, &writefds, NULL, &tv );
946 if ( FD_ISSET( pi_stdout[0], &readfds ) )
948 ssize_t i_read = read( pi_stdout[0], &(*pp_data)[*pi_data],
953 *pp_data = realloc( *pp_data, *pi_data + 1025 );
956 if ( FD_ISSET( pi_stdin[0], &writefds ) )
958 ssize_t i_write = write( pi_stdin[0], p_in, __MIN(i_in, 1024) );
966 close( pi_stdin[0] );
970 if ( waitpid( i_child_pid, &i_status, WNOHANG ) == i_child_pid )
972 if ( WIFEXITED( i_status ) )
974 if ( WEXITSTATUS( i_status ) )
977 "child %s returned with error code %d",
978 ppsz_argv[0], WEXITSTATUS( i_status ) );
983 if ( WIFSIGNALED( i_status ) )
986 "child %s quit on signal %d", ppsz_argv[0],
987 WTERMSIG( i_status ) );
991 close( pi_stdin[0] );
992 close( pi_stdout[0] );
996 if ( i_ret < 0 && errno != EINTR )
998 msg_Warn( p_object, "select failed (%s)", strerror(errno) );
1002 #elif defined( WIN32 ) && !defined( UNDER_CE )
1003 SECURITY_ATTRIBUTES saAttr;
1004 PROCESS_INFORMATION piProcInfo;
1005 STARTUPINFO siStartInfo;
1006 BOOL bFuncRetn = FALSE;
1007 HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
1009 char *psz_cmd, *p_env, *p;
1013 /* Set the bInheritHandle flag so pipe handles are inherited. */
1014 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
1015 saAttr.bInheritHandle = TRUE;
1016 saAttr.lpSecurityDescriptor = NULL;
1018 /* Create a pipe for the child process's STDOUT. */
1019 if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
1021 msg_Err( p_object, "stdout pipe creation failed" );
1025 /* Ensure the read handle to the pipe for STDOUT is not inherited. */
1026 SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
1028 /* Create a pipe for the child process's STDIN. */
1029 if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
1031 msg_Err( p_object, "stdin pipe creation failed" );
1035 /* Ensure the write handle to the pipe for STDIN is not inherited. */
1036 SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
1038 /* Set up members of the PROCESS_INFORMATION structure. */
1039 ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
1041 /* Set up members of the STARTUPINFO structure. */
1042 ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
1043 siStartInfo.cb = sizeof(STARTUPINFO);
1044 siStartInfo.hStdError = hChildStdoutWr;
1045 siStartInfo.hStdOutput = hChildStdoutWr;
1046 siStartInfo.hStdInput = hChildStdinRd;
1047 siStartInfo.wShowWindow = SW_HIDE;
1048 siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
1050 /* Set up the command line. */
1051 psz_cmd = malloc(32768);
1054 ppsz_parser = &ppsz_argv[0];
1055 while ( ppsz_parser[0] != NULL && i_size > 0 )
1057 /* Protect the last argument with quotes ; the other arguments
1058 * are supposed to be already protected because they have been
1059 * passed as a command-line option. */
1060 if ( ppsz_parser[1] == NULL )
1062 strncat( psz_cmd, "\"", i_size );
1065 strncat( psz_cmd, *ppsz_parser, i_size );
1066 i_size -= strlen( *ppsz_parser );
1067 if ( ppsz_parser[1] == NULL )
1069 strncat( psz_cmd, "\"", i_size );
1072 strncat( psz_cmd, " ", i_size );
1077 /* Set up the environment. */
1078 p = p_env = malloc(32768);
1080 ppsz_parser = &ppsz_env[0];
1081 while ( *ppsz_parser != NULL && i_size > 0 )
1083 memcpy( p, *ppsz_parser,
1084 __MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
1085 p += strlen(*ppsz_parser) + 1;
1086 i_size -= strlen(*ppsz_parser) + 1;
1091 /* Create the child process. */
1092 bFuncRetn = CreateProcess( NULL,
1093 psz_cmd, // command line
1094 NULL, // process security attributes
1095 NULL, // primary thread security attributes
1096 TRUE, // handles are inherited
1097 0, // creation flags
1100 &siStartInfo, // STARTUPINFO pointer
1101 &piProcInfo ); // receives PROCESS_INFORMATION
1106 if ( bFuncRetn == 0 )
1108 msg_Err( p_object, "child creation failed" );
1112 /* Read from a file and write its contents to a pipe. */
1113 while ( i_in > 0 && !p_object->b_die )
1116 if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
1122 /* Close the pipe handle so the child process stops reading. */
1123 CloseHandle(hChildStdinWr);
1125 /* Close the write end of the pipe before reading from the
1126 * read end of the pipe. */
1127 CloseHandle(hChildStdoutWr);
1129 /* Read output from the child process. */
1131 *pp_data = malloc( 1025 ); /* +1 for \0 */
1133 while ( !p_object->b_die )
1136 if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
1141 *pp_data = realloc( *pp_data, *pi_data + 1025 );
1144 while ( !p_object->b_die
1145 && !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
1146 && i_status != STILL_ACTIVE )
1149 CloseHandle(piProcInfo.hProcess);
1150 CloseHandle(piProcInfo.hThread);
1154 "child %s returned with error code %ld",
1155 ppsz_argv[0], i_status );
1158 msg_Err( p_object, "vlc_execve called but no implementation is available" );
1163 (*pp_data)[*pi_data] = '\0';