132 lines
2.9 KiB
C
132 lines
2.9 KiB
C
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// win32_dirent.c
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// directory entry functions in Windows platform like Ubix/Linux
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// opendir(), readdir(), closedir().
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include "inc\utf.h"
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#include "inc\dirent.h"
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#include "inc\libgen.h"
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struct DIR_ {
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intptr_t hFile;
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struct _wfinddata_t c_file;
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int first;
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};
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char * realpath_win(const char *path, char resolved[MAX_PATH]);
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/* Open a directory stream on NAME.
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Return a DIR stream on the directory, or NULL if it could not be opened. */
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DIR * opendir(const char *name)
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{
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struct _wfinddata_t c_file;
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intptr_t hFile;
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DIR *pdir;
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wchar_t searchstr[MAX_PATH];
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wchar_t* wname = NULL;
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int needed;
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// Skip the first '/' in the pathname
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char resolvedPathName[MAX_PATH];
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realpath_win(name, resolvedPathName);
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if ((wname = utf8_to_utf16(resolvedPathName)) == NULL) {
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errno = ENOMEM;
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return NULL;
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}
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// add *.* for Windows _findfirst() search pattern
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swprintf_s(searchstr, MAX_PATH, L"%s\\*.*", wname);
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free(wname);
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if ((hFile = _wfindfirst(searchstr, &c_file)) == -1L)
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return NULL; /* errno is set by _wfindfirst */
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else {
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if ((pdir = malloc(sizeof(DIR))) == NULL) {
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_findclose(hFile);
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errno = ENOMEM;
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return NULL;
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}
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memset(pdir, 0, sizeof(DIR));
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pdir->hFile = hFile;
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memcpy(&pdir->c_file, &c_file, sizeof(c_file));
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pdir->first = 1;
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return pdir ;
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}
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}
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/* Close the directory stream DIRP.
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Return 0 if successful, -1 if not. */
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int closedir(DIR *dirp)
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{
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if ( dirp && (dirp->hFile) ) {
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_findclose( dirp->hFile );
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dirp->hFile = 0;
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free (dirp);
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}
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return 0;
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}
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/* Read a directory entry from DIRP.
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Return a pointer to a `struct dirent' describing the entry,
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or NULL for EOF or error. The storage returned may be overwritten
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by a later readdir call on the same DIR stream. */
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struct dirent *readdir(void *avp)
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{
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struct dirent *pdirentry;
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struct _wfinddata_t c_file;
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DIR *dirp = (DIR *)avp;
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char *tmp = NULL;
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for (;;) {
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if (dirp->first) {
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memcpy(&c_file, &dirp->c_file, sizeof(c_file));
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dirp->first = 0;
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}
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else if (_wfindnext(dirp->hFile, &c_file) != 0)
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return NULL;
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if (wcscmp(c_file.name, L".") == 0 || wcscmp(c_file.name, L"..") == 0 )
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continue;
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if ((pdirentry = malloc(sizeof(struct dirent))) == NULL ||
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(tmp = utf16_to_utf8(c_file.name)) == NULL) {
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errno = ENOMEM;
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return NULL;
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}
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strncpy(pdirentry->d_name, tmp, strlen(tmp) + 1);
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free(tmp);
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pdirentry->d_ino = 1; // a fictious one like UNIX to say it is nonzero
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return pdirentry ;
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}
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}
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// return last part of a path. The last path being a filename.
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char *basename(char *path)
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{
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char *pdest;
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if (!path)
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return ".";
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pdest = strrchr(path, '/');
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if (pdest)
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return (pdest+1);
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pdest = strrchr(path, '\\');
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if (pdest)
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return (pdest+1);
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return path; // path does not have a slash
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}
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// end of dirent functions in Windows
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