1 /*****************************************************************************
2 * libc.c: Extra libc function for some systems.
3 *****************************************************************************
4 * Copyright (C) 2002 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>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
26 *****************************************************************************/
27 #include <string.h> /* strdup() */
32 #include <vlc_common.h>
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
59 /*****************************************************************************
60 * getenv: just in case, but it should never be called
61 *****************************************************************************/
62 #if !defined( HAVE_GETENV )
63 char *vlc_getenv( const char *name )
69 /*****************************************************************************
70 * strdup: returns a malloc'd copy of a string
71 *****************************************************************************/
72 #if !defined( HAVE_STRDUP )
73 char *vlc_strdup( const char *string )
75 return strndup( string, strlen( string ) );
79 /*****************************************************************************
80 * strndup: returns a malloc'd copy of at most n bytes of string
81 * Does anyone know whether or not it will be present in Jaguar?
82 *****************************************************************************/
83 #if !defined( HAVE_STRNDUP )
84 char *vlc_strndup( const char *string, size_t n )
87 size_t len = strlen( string );
89 len = __MIN( len, n );
90 psz = (char*)malloc( len + 1 );
94 memcpy( (void*)psz, (const void*)string, len );
102 /*****************************************************************************
103 * strcasecmp: compare two strings ignoring case
104 *****************************************************************************/
105 #if !defined( HAVE_STRCASECMP ) && !defined( HAVE_STRICMP )
106 int vlc_strcasecmp( const char *s1, const char *s2 )
109 if( !s1 || !s2 ) return -1;
116 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
120 if( !*s1 && !*s2 ) return 0;
121 else return (*s1 ? 1 : -1);
125 /*****************************************************************************
126 * strncasecmp: compare n chars from two strings ignoring case
127 *****************************************************************************/
128 #if !defined( HAVE_STRNCASECMP ) && !defined( HAVE_STRNICMP )
129 int vlc_strncasecmp( const char *s1, const char *s2, size_t n )
132 if( !s1 || !s2 ) return -1;
134 while( n > 0 && *s1 && *s2 )
139 if( c1 != c2 ) return (c1 < c2 ? -1 : 1);
143 if( !n || (!*s1 && !*s2) ) return 0;
144 else return (*s1 ? 1 : -1);
148 /******************************************************************************
149 * strcasestr: find a substring (little) in another substring (big)
150 * Case sensitive. Return NULL if not found, return big if little == null
151 *****************************************************************************/
152 #if !defined( HAVE_STRCASESTR ) && !defined( HAVE_STRISTR )
153 char * vlc_strcasestr( const char *psz_big, const char *psz_little )
155 char *p_pos = (char *)psz_big;
157 if( !psz_big || !psz_little || !*psz_little ) return p_pos;
161 if( toupper( *p_pos ) == toupper( *psz_little ) )
163 char * psz_cur1 = p_pos + 1;
164 char * psz_cur2 = (char *)psz_little + 1;
165 while( *psz_cur1 && *psz_cur2 &&
166 toupper( *psz_cur1 ) == toupper( *psz_cur2 ) )
171 if( !*psz_cur2 ) return p_pos;
179 /*****************************************************************************
181 *****************************************************************************/
182 #if !defined(HAVE_VASPRINTF) || defined(SYS_DARWIN) || defined(SYS_BEOS)
183 int vlc_vasprintf(char **strp, const char *fmt, va_list ap)
185 /* Guess we need no more than 100 bytes. */
187 char *p = malloc( i_size );
198 /* Try to print in the allocated space. */
199 n = vsnprintf( p, i_size, fmt, ap );
201 /* If that worked, return the string. */
202 if (n > -1 && n < i_size)
207 /* Else try again with more space. */
208 if (n > -1) /* glibc 2.1 */
210 i_size = n+1; /* precisely what is needed */
214 i_size *= 2; /* twice the old size */
216 if( (p = realloc( p, i_size ) ) == NULL)
225 /*****************************************************************************
227 *****************************************************************************/
228 #if !defined(HAVE_ASPRINTF) || defined(SYS_DARWIN) || defined(SYS_BEOS)
229 int vlc_asprintf( char **strp, const char *fmt, ... )
234 va_start( args, fmt );
235 i_ret = vasprintf( strp, fmt, args );
242 /*****************************************************************************
243 * atof: convert a string to a double.
244 *****************************************************************************/
245 #if !defined( HAVE_ATOF )
246 double vlc_atof( const char *nptr )
250 int i_len = strlen( nptr ) + 1;
252 psz_tmp = malloc( i_len * sizeof(wchar_t) );
253 MultiByteToWideChar( CP_ACP, 0, nptr, -1, psz_tmp, i_len );
254 f_result = wcstod( psz_tmp, NULL );
261 /*****************************************************************************
262 * strtoll: convert a string to a 64 bits int.
263 *****************************************************************************/
264 #if !defined( HAVE_STRTOLL )
265 int64_t vlc_strtoll( const char *nptr, char **endptr, int base )
268 int sign = 1, newbase = base ? base : 10;
270 while( isspace(*nptr) ) nptr++;
278 /* Try to detect base */
291 if( base && newbase != base )
293 if( endptr ) *endptr = (char *)nptr;
300 while( *nptr >= '0' && *nptr <= '9' )
303 i_value += ( *nptr++ - '0' );
305 if( endptr ) *endptr = (char *)nptr;
309 while( (*nptr >= '0' && *nptr <= '9') ||
310 (*nptr >= 'a' && *nptr <= 'f') ||
311 (*nptr >= 'A' && *nptr <= 'F') )
314 if(*nptr >= '0' && *nptr <= '9') i_valc = *nptr - '0';
315 else if(*nptr >= 'a' && *nptr <= 'f') i_valc = *nptr - 'a' +10;
316 else if(*nptr >= 'A' && *nptr <= 'F') i_valc = *nptr - 'A' +10;
321 if( endptr ) *endptr = (char *)nptr;
325 i_value = strtol( nptr, endptr, newbase );
329 return i_value * sign;
333 /*****************************************************************************
334 * atoll: convert a string to a 64 bits int.
335 *****************************************************************************/
336 #if !defined( HAVE_ATOLL )
337 int64_t vlc_atoll( const char *nptr )
339 return strtoll( nptr, (char **)NULL, 10 );
343 /*****************************************************************************
344 * vlc_*dir_wrapper: wrapper under Windows to return the list of drive letters
345 * when called with an empty argument or just '\'
346 *****************************************************************************/
347 #if defined(WIN32) || defined(UNDER_CE)
348 typedef struct vlc_DIR
352 struct dirent dd_dir;
353 vlc_bool_t b_insert_back;
356 void *vlc_opendir_wrapper( const char *psz_path )
361 if ( psz_path == NULL || psz_path[0] == '\0'
362 || (psz_path[0] == '\\' && psz_path[1] == '\0') )
364 /* Special mode to list drive letters */
365 p_dir = malloc( sizeof(vlc_DIR) );
366 p_dir->p_real_dir = NULL;
367 p_dir->i_drives = GetLogicalDrives();
368 return (void *)p_dir;
371 p_real_dir = opendir( psz_path );
372 if ( p_real_dir == NULL )
375 p_dir = malloc( sizeof(vlc_DIR) );
376 p_dir->p_real_dir = p_real_dir;
377 p_dir->b_insert_back = ( psz_path[1] == ':' && psz_path[2] == '\\'
378 && psz_path[3] =='\0' );
379 return (void *)p_dir;
382 struct dirent *vlc_readdir_wrapper( void *_p_dir )
384 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
388 if ( p_dir->p_real_dir != NULL )
390 if ( p_dir->b_insert_back )
392 p_dir->dd_dir.d_ino = 0;
393 p_dir->dd_dir.d_reclen = 0;
394 p_dir->dd_dir.d_namlen = 2;
395 strcpy( p_dir->dd_dir.d_name, ".." );
396 p_dir->b_insert_back = VLC_FALSE;
397 return &p_dir->dd_dir;
400 return readdir( p_dir->p_real_dir );
403 /* Drive letters mode */
404 i_drives = p_dir->i_drives;
406 return NULL; /* end */
408 for ( i = 0; i < sizeof(DWORD)*8; i++, i_drives >>= 1 )
409 if ( i_drives & 1 ) break;
412 return NULL; /* this should not happen */
414 sprintf( p_dir->dd_dir.d_name, "%c:\\", 'A' + i );
415 p_dir->dd_dir.d_namlen = strlen(p_dir->dd_dir.d_name);
416 p_dir->i_drives &= ~(1UL << i);
417 return &p_dir->dd_dir;
420 int vlc_closedir_wrapper( void *_p_dir )
422 vlc_DIR *p_dir = (vlc_DIR *)_p_dir;
424 if ( p_dir->p_real_dir != NULL )
426 int i_ret = closedir( p_dir->p_real_dir );
435 void *vlc_opendir_wrapper( const char *psz_path )
437 return (void *)opendir( psz_path );
439 struct dirent *vlc_readdir_wrapper( void *_p_dir )
441 return readdir( (DIR *)_p_dir );
443 int vlc_closedir_wrapper( void *_p_dir )
445 return closedir( (DIR *)_p_dir );
449 /*****************************************************************************
450 * scandir: scan a directory alpha-sorted
451 *****************************************************************************/
452 #if !defined( HAVE_SCANDIR )
453 int vlc_alphasort( const struct dirent **a, const struct dirent **b )
455 return strcoll( (*a)->d_name, (*b)->d_name );
458 int vlc_scandir( const char *name, struct dirent ***namelist,
459 int (*filter) ( const struct dirent * ),
460 int (*compar) ( const struct dirent **,
461 const struct dirent ** ) )
464 struct dirent * p_content;
465 struct dirent ** pp_list;
468 if( !namelist || !( p_dir = vlc_opendir_wrapper( name ) ) ) return -1;
472 while( ( p_content = vlc_readdir_wrapper( p_dir ) ) )
474 if( filter && !filter( p_content ) )
478 pp_list = realloc( pp_list, ( ret + 1 ) * sizeof( struct dirent * ) );
479 size = sizeof( struct dirent ) + strlen( p_content->d_name ) + 1;
480 pp_list[ret] = malloc( size );
481 memcpy( pp_list[ret], p_content, size );
485 vlc_closedir_wrapper( p_dir );
489 qsort( pp_list, ret, sizeof( struct dirent * ),
490 (int (*)(const void *, const void *)) compar );
498 /*****************************************************************************
499 * dgettext: gettext for plugins.
500 *****************************************************************************/
501 char *vlc_dgettext( const char *package, const char *msgid )
503 #if defined( ENABLE_NLS ) \
504 && ( defined(HAVE_GETTEXT) || defined(HAVE_INCLUDED_GETTEXT) )
505 return dgettext( package, msgid );
507 return (char *)msgid;
511 /*****************************************************************************
512 * count_utf8_string: returns the number of characters in the string.
513 *****************************************************************************/
514 static int count_utf8_string( const char *psz_string )
516 int i = 0, i_count = 0;
517 while( psz_string[ i ] != 0 )
519 if( ((unsigned char *)psz_string)[ i ] < 0x80UL ) i_count++;
525 /*****************************************************************************
526 * wraptext: inserts \n at convenient places to wrap the text.
527 * Returns the modified string in a new buffer.
528 *****************************************************************************/
529 char *vlc_wraptext( const char *psz_text, int i_line, vlc_bool_t b_utf8 )
532 char *psz_line, *psz_new_text;
534 psz_line = psz_new_text = strdup( psz_text );
537 i_len = count_utf8_string( psz_text );
539 i_len = strlen( psz_text );
541 while( i_len > i_line )
543 /* Look if there is a newline somewhere. */
544 char *psz_parser = psz_line;
546 while( i_count <= i_line && *psz_parser != '\n' )
550 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
555 if( *psz_parser == '\n' )
557 i_len -= (i_count + 1);
558 psz_line = psz_parser + 1;
562 /* Find the furthest space. */
563 while( psz_parser > psz_line && *psz_parser != ' ' )
567 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser--;
572 if( *psz_parser == ' ' )
575 i_len -= (i_count + 1);
576 psz_line = psz_parser + 1;
580 /* Wrapping has failed. Find the first space or newline */
581 while( i_count < i_len && *psz_parser != ' ' && *psz_parser != '\n' )
585 while( *((unsigned char *)psz_parser) >= 0x80UL ) psz_parser++;
590 if( i_count < i_len ) *psz_parser = '\n';
591 i_len -= (i_count + 1);
592 psz_line = psz_parser + 1;
598 /*****************************************************************************
600 *****************************************************************************/
601 vlc_iconv_t vlc_iconv_open( const char *tocode, const char *fromcode )
603 #if defined(HAVE_ICONV)
604 return iconv_open( tocode, fromcode );
610 size_t vlc_iconv( vlc_iconv_t cd, char **inbuf, size_t *inbytesleft,
611 char **outbuf, size_t *outbytesleft )
613 #if defined(HAVE_ICONV)
614 return iconv( cd, inbuf, inbytesleft, outbuf, outbytesleft );
618 if (inbytesleft == NULL || outbytesleft == NULL)
623 i_bytes = __MIN(*inbytesleft, *outbytesleft);
624 if( !inbuf || !outbuf || !i_bytes ) return (size_t)(-1);
625 memcpy( *outbuf, *inbuf, i_bytes );
628 inbytesleft -= i_bytes;
629 outbytesleft -= i_bytes;
634 int vlc_iconv_close( vlc_iconv_t cd )
636 #if defined(HAVE_ICONV)
637 return iconv_close( cd );
643 /*****************************************************************************
645 * (adapted from libavcodec, author Michael Niedermayer <michaelni@gmx.at>)
646 *****************************************************************************/
647 vlc_bool_t vlc_ureduce( unsigned *pi_dst_nom, unsigned *pi_dst_den,
648 uint64_t i_nom, uint64_t i_den, uint64_t i_max )
650 vlc_bool_t b_exact = 1;
660 i_gcd = GCD( i_nom, i_den );
664 if( i_max == 0 ) i_max = I64C(0xFFFFFFFF);
666 if( i_nom > i_max || i_den > i_max )
668 uint64_t i_a0_num = 0, i_a0_den = 1, i_a1_num = 1, i_a1_den = 0;
673 uint64_t i_x = i_nom / i_den;
674 uint64_t i_a2n = i_x * i_a1_num + i_a0_num;
675 uint64_t i_a2d = i_x * i_a1_den + i_a0_den;
677 if( i_a2n > i_max || i_a2d > i_max ) break;
681 i_a0_num = i_a1_num; i_a0_den = i_a1_den;
682 i_a1_num = i_a2n; i_a1_den = i_a2d;
683 if( i_nom == 0 ) break;
684 i_x = i_nom; i_nom = i_den; i_den = i_x;
696 /*************************************************************************
697 * vlc_parse_cmdline: Command line parsing into elements.
699 * The command line is composed of space/tab separated arguments.
700 * Quotes can be used as argument delimiters and a backslash can be used to
702 *************************************************************************/
703 static void find_end_quote( char **s, char **ppsz_parser, int i_quote )
712 (*ppsz_parser)++; (*s)++;
715 else if( **s == '"' || **s == '\'' )
717 /* Preceeded by a number of '\' which we erase. */
718 *ppsz_parser -= i_bcount / 2;
721 /* '\\' followed by a '"' or '\'' */
724 (*ppsz_parser)++; (*s)++;
736 /* Different quoting */
739 (*ppsz_parser)++; (*s)++;
740 find_end_quote( s, ppsz_parser, i_quote );
742 (*ppsz_parser)++; (*s)++;
749 /* A regular character */
751 (*ppsz_parser)++; (*s)++;
757 char **vlc_parse_cmdline( const char *psz_cmdline, int *i_args )
761 char *s, *psz_parser, *psz_arg, *psz_orig;
764 if( !psz_cmdline ) return 0;
765 psz_orig = strdup( psz_cmdline );
766 psz_arg = psz_parser = s = psz_orig;
770 if( *s == '\t' || *s == ' ' )
772 /* We have a complete argument */
774 TAB_APPEND( argc, argv, strdup(psz_arg) );
776 /* Skip trailing spaces/tabs */
777 do{ s++; } while( *s == '\t' || *s == ' ' );
780 psz_arg = psz_parser = s;
783 else if( *s == '\\' )
785 *psz_parser++ = *s++;
788 else if( *s == '"' || *s == '\'' )
790 if( ( i_bcount & 1 ) == 0 )
792 /* Preceeded by an even number of '\', this is half that
793 * number of '\', plus a quote which we erase. */
795 psz_parser -= i_bcount / 2;
797 find_end_quote( &s, &psz_parser, i_quote );
802 /* Preceeded by an odd number of '\', this is half that
803 * number of '\' followed by a '"' */
804 psz_parser = psz_parser - i_bcount/2 - 1;
812 /* A regular character */
813 *psz_parser++ = *s++;
818 /* Take care of the last arg */
822 TAB_APPEND( argc, argv, strdup(psz_arg) );
825 if( i_args ) *i_args = argc;
830 /*************************************************************************
831 * vlc_execve: Execute an external program with a given environment,
832 * wait until it finishes and return its standard output
833 *************************************************************************/
834 int __vlc_execve( vlc_object_t *p_object, int i_argc, char **ppsz_argv,
835 char **ppsz_env, char *psz_cwd, char *p_in, int i_in,
836 char **pp_data, int *pi_data )
846 if ( (i_child_pid = fork()) == -1 )
848 msg_Err( p_object, "unable to fork (%s)", strerror(errno) );
852 if ( i_child_pid == 0 )
864 if ( psz_cwd != NULL )
866 execve( ppsz_argv[0], ppsz_argv, ppsz_env );
873 close( pi_stdin[0] );
876 *pp_data = malloc( 1025 ); /* +1 for \0 */
878 while ( !p_object->b_die )
881 fd_set readfds, writefds;
885 FD_ZERO( &writefds );
886 FD_SET( pi_stdout[0], &readfds );
888 FD_SET( pi_stdin[0], &writefds );
893 i_ret = select( pi_stdin[0] > pi_stdout[0] ? pi_stdin[0] + 1 :
894 pi_stdout[0] + 1, &readfds, &writefds, NULL, &tv );
897 if ( FD_ISSET( pi_stdout[0], &readfds ) )
899 ssize_t i_read = read( pi_stdout[0], &(*pp_data)[*pi_data],
904 *pp_data = realloc( *pp_data, *pi_data + 1025 );
907 if ( FD_ISSET( pi_stdin[0], &writefds ) )
909 ssize_t i_write = write( pi_stdin[0], p_in, __MIN(i_in, 1024) );
917 close( pi_stdin[0] );
921 if ( waitpid( i_child_pid, &i_status, WNOHANG ) == i_child_pid )
923 if ( WIFEXITED( i_status ) )
925 if ( WEXITSTATUS( i_status ) )
928 "child %s returned with error code %d",
929 ppsz_argv[0], WEXITSTATUS( i_status ) );
934 if ( WIFSIGNALED( i_status ) )
937 "child %s quit on signal %d", ppsz_argv[0],
938 WTERMSIG( i_status ) );
942 close( pi_stdin[0] );
943 close( pi_stdout[0] );
947 if ( i_ret < 0 && errno != EINTR )
949 msg_Warn( p_object, "select failed (%s)", strerror(errno) );
953 #elif defined( WIN32 )
954 SECURITY_ATTRIBUTES saAttr;
955 PROCESS_INFORMATION piProcInfo;
956 STARTUPINFO siStartInfo;
957 BOOL bFuncRetn = FALSE;
958 HANDLE hChildStdinRd, hChildStdinWr, hChildStdoutRd, hChildStdoutWr;
960 char *psz_cmd, *p_env, *p;
964 /* Set the bInheritHandle flag so pipe handles are inherited. */
965 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
966 saAttr.bInheritHandle = TRUE;
967 saAttr.lpSecurityDescriptor = NULL;
969 /* Create a pipe for the child process's STDOUT. */
970 if ( !CreatePipe( &hChildStdoutRd, &hChildStdoutWr, &saAttr, 0 ) )
972 msg_Err( p_object, "stdout pipe creation failed" );
976 /* Ensure the read handle to the pipe for STDOUT is not inherited. */
977 SetHandleInformation( hChildStdoutRd, HANDLE_FLAG_INHERIT, 0 );
979 /* Create a pipe for the child process's STDIN. */
980 if ( !CreatePipe( &hChildStdinRd, &hChildStdinWr, &saAttr, 0 ) )
982 msg_Err( p_object, "stdin pipe creation failed" );
986 /* Ensure the write handle to the pipe for STDIN is not inherited. */
987 SetHandleInformation( hChildStdinWr, HANDLE_FLAG_INHERIT, 0 );
989 /* Set up members of the PROCESS_INFORMATION structure. */
990 ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
992 /* Set up members of the STARTUPINFO structure. */
993 ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
994 siStartInfo.cb = sizeof(STARTUPINFO);
995 siStartInfo.hStdError = hChildStdoutWr;
996 siStartInfo.hStdOutput = hChildStdoutWr;
997 siStartInfo.hStdInput = hChildStdinRd;
998 siStartInfo.wShowWindow = SW_HIDE;
999 siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
1001 /* Set up the command line. */
1002 psz_cmd = malloc(32768);
1005 ppsz_parser = &ppsz_argv[0];
1006 while ( ppsz_parser[0] != NULL && i_size > 0 )
1008 /* Protect the last argument with quotes ; the other arguments
1009 * are supposed to be already protected because they have been
1010 * passed as a command-line option. */
1011 if ( ppsz_parser[1] == NULL )
1013 strncat( psz_cmd, "\"", i_size );
1016 strncat( psz_cmd, *ppsz_parser, i_size );
1017 i_size -= strlen( *ppsz_parser );
1018 if ( ppsz_parser[1] == NULL )
1020 strncat( psz_cmd, "\"", i_size );
1023 strncat( psz_cmd, " ", i_size );
1028 /* Set up the environment. */
1029 p = p_env = malloc(32768);
1031 ppsz_parser = &ppsz_env[0];
1032 while ( *ppsz_parser != NULL && i_size > 0 )
1034 memcpy( p, *ppsz_parser,
1035 __MIN((int)(strlen(*ppsz_parser) + 1), i_size) );
1036 p += strlen(*ppsz_parser) + 1;
1037 i_size -= strlen(*ppsz_parser) + 1;
1042 /* Create the child process. */
1043 bFuncRetn = CreateProcess( NULL,
1044 psz_cmd, // command line
1045 NULL, // process security attributes
1046 NULL, // primary thread security attributes
1047 TRUE, // handles are inherited
1048 0, // creation flags
1051 &siStartInfo, // STARTUPINFO pointer
1052 &piProcInfo ); // receives PROCESS_INFORMATION
1057 if ( bFuncRetn == 0 )
1059 msg_Err( p_object, "child creation failed" );
1063 /* Read from a file and write its contents to a pipe. */
1064 while ( i_in > 0 && !p_object->b_die )
1067 if ( !WriteFile( hChildStdinWr, p_in, i_in, &i_written, NULL ) )
1073 /* Close the pipe handle so the child process stops reading. */
1074 CloseHandle(hChildStdinWr);
1076 /* Close the write end of the pipe before reading from the
1077 * read end of the pipe. */
1078 CloseHandle(hChildStdoutWr);
1080 /* Read output from the child process. */
1082 *pp_data = malloc( 1025 ); /* +1 for \0 */
1084 while ( !p_object->b_die )
1087 if ( !ReadFile( hChildStdoutRd, &(*pp_data)[*pi_data], 1024, &i_read,
1092 *pp_data = realloc( *pp_data, *pi_data + 1025 );
1095 while ( !p_object->b_die
1096 && !GetExitCodeProcess( piProcInfo.hProcess, &i_status )
1097 && i_status != STILL_ACTIVE )
1100 CloseHandle(piProcInfo.hProcess);
1101 CloseHandle(piProcInfo.hThread);
1105 "child %s returned with error code %ld",
1106 ppsz_argv[0], i_status );
1109 msg_Err( p_object, "vlc_execve called but no implementation is available" );
1114 (*pp_data)[*pi_data] = '\0';