diff -r 000000000000 -r bde4ae8d615e os/persistentdata/persistentstorage/sqlite3api/TEST/TCL/tcldistribution/compat/opendir.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/persistentdata/persistentstorage/sqlite3api/TEST/TCL/tcldistribution/compat/opendir.c Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,108 @@ +/* + * opendir.c -- + * + * This file provides dirent-style directory-reading procedures + * for V7 Unix systems that don't have such procedures. The + * origin of this code is unclear, but it seems to have come + * originally from Larry Wall. + * + * + * RCS: @(#) $Id: opendir.c,v 1.2 1998/09/14 18:39:44 stanton Exp $ + */ + +#include "tclInt.h" +#include "tclPort.h" + +#undef DIRSIZ +#define DIRSIZ(dp) \ + ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) + +/* + * open a directory. + */ +DIR * +opendir(name) +char *name; +{ + register DIR *dirp; + register int fd; + char *myname; + + myname = ((*name == '\0') ? "." : name); + if ((fd = open(myname, 0, 0)) == -1) + return NULL; + if ((dirp = (DIR *)ckalloc(sizeof(DIR))) == NULL) { + close (fd); + return NULL; + } + dirp->dd_fd = fd; + dirp->dd_loc = 0; + return dirp; +} + +/* + * read an old style directory entry and present it as a new one + */ +#ifndef pyr +#define ODIRSIZ 14 + +struct olddirect { + ino_t od_ino; + char od_name[ODIRSIZ]; +}; +#else /* a Pyramid in the ATT universe */ +#define ODIRSIZ 248 + +struct olddirect { + long od_ino; + short od_fill1, od_fill2; + char od_name[ODIRSIZ]; +}; +#endif + +/* + * get next entry in a directory. + */ +struct dirent * +readdir(dirp) +register DIR *dirp; +{ + register struct olddirect *dp; + static struct dirent dir; + + for (;;) { + if (dirp->dd_loc == 0) { + dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, + DIRBLKSIZ); + if (dirp->dd_size <= 0) + return NULL; + } + if (dirp->dd_loc >= dirp->dd_size) { + dirp->dd_loc = 0; + continue; + } + dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc); + dirp->dd_loc += sizeof(struct olddirect); + if (dp->od_ino == 0) + continue; + dir.d_ino = dp->od_ino; + strncpy(dir.d_name, dp->od_name, ODIRSIZ); + dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */ + dir.d_namlen = strlen(dir.d_name); + dir.d_reclen = DIRSIZ(&dir); + return (&dir); + } +} + +/* + * close a directory. + */ +void +closedir(dirp) +register DIR *dirp; +{ + close(dirp->dd_fd); + dirp->dd_fd = -1; + dirp->dd_loc = 0; + ckfree((char *) dirp); +}