Add untracked files programs/imagex-win32.{c,h}
authorEric Biggers <ebiggers3@gmail.com>
Sun, 17 Mar 2013 21:32:35 +0000 (16:32 -0500)
committerEric Biggers <ebiggers3@gmail.com>
Sun, 17 Mar 2013 21:32:35 +0000 (16:32 -0500)
programs/imagex-win32.c [new file with mode: 0644]
programs/imagex-win32.h [new file with mode: 0644]

diff --git a/programs/imagex-win32.c b/programs/imagex-win32.c
new file mode 100644 (file)
index 0000000..3c449a7
--- /dev/null
@@ -0,0 +1,96 @@
+
+/* Replacements for functions needed specifically by the 'imagex' program in
+ * Windows native builds */
+
+#ifndef __WIN32__
+#  error "This file contains Windows code"
+#endif
+
+#include "imagex-win32.h"
+#include <windows.h>
+#include <errno.h>
+#include <string.h>
+#include <assert.h>
+
+
+/* Replacement for glob() in Windows native builds. */
+int glob(const char *pattern, int flags,
+        int (*errfunc)(const char *epath, int eerrno),
+        glob_t *pglob)
+{
+       WIN32_FIND_DATA dat;
+       DWORD err;
+       HANDLE hFind;
+       int ret;
+       size_t nspaces;
+
+       /* This function does not support all functionality of the POSIX glob(),
+        * so make sure the parameters are consistent with supported
+        * functionality. */
+       assert(errfunc == NULL);
+       assert((flags & GLOB_ERR) == GLOB_ERR);
+       assert((flags & ~(GLOB_NOSORT | GLOB_ERR)) == 0);
+
+       hFind = FindFirstFileA(pattern, &dat);
+       if (hFind == INVALID_HANDLE_VALUE) {
+               err = GetLastError();
+               if (err == ERROR_FILE_NOT_FOUND) {
+                       errno = 0;
+                       return GLOB_NOMATCH;
+               } else {
+                       /* The other possible error codes for FindFirstFile()
+                        * are undocumented. */
+                       errno = EIO;
+                       return GLOB_ABORTED;
+               }
+       }
+       pglob->gl_pathc = 0;
+       pglob->gl_pathv = NULL;
+       nspaces = 0;
+       do {
+               char *filename;
+               if (pglob->gl_pathc == nspaces) {
+                       size_t new_nspaces;
+                       char **pathv;
+
+                       new_nspaces = nspaces * 2 + 1;  
+                       pathv = realloc(pglob->gl_pathv,
+                                       new_nspaces * sizeof(pglob->gl_pathv[0]));
+                       if (!pathv)
+                               goto oom;
+                       pglob->gl_pathv = pathv;
+                       nspaces = new_nspaces;
+               }
+               filename = strdup(dat.cFileName);
+               if (!filename)
+                       goto oom;
+               pglob->gl_pathv[pglob->gl_pathc++] = filename;
+       } while (FindNextFileA(hFind, &dat));
+       err = GetLastError();
+       CloseHandle(hFind);
+       if (err == ERROR_NO_MORE_FILES) {
+               errno = 0;
+               return 0;
+       } else {
+               /* Other possible error codes for FindNextFile() are
+                * undocumented */
+               errno = EIO;
+               ret = GLOB_ABORTED;
+               goto fail_globfree;
+       }
+oom:
+       CloseHandle(hFind);
+       errno = ENOMEM;
+       ret = GLOB_NOSPACE;
+fail_globfree:
+       globfree(pglob);
+       return ret;
+}
+
+void globfree(glob_t *pglob)
+{
+       size_t i;
+       for (i = 0; i < pglob->gl_pathc; i++)
+               free(pglob->gl_pathv[i]);
+       free(pglob->gl_pathv[i]);
+}
diff --git a/programs/imagex-win32.h b/programs/imagex-win32.h
new file mode 100644 (file)
index 0000000..58441e8
--- /dev/null
@@ -0,0 +1,27 @@
+#ifndef _IMAGEX_WIN32_H
+#define _IMAGEX_WIN32_H
+
+#include <stddef.h>
+
+typedef struct {
+       size_t gl_pathc;
+       char **gl_pathv;
+       size_t gl_offs;
+} glob_t;
+
+/* WARNING: this is a reduced functionality replacement */
+extern int glob(const char *pattern, int flags,
+               int (*errfunc)(const char *epath, int eerrno),
+               glob_t *pglob);
+
+extern void globfree(glob_t *pglob);
+
+#define        GLOB_ERR        0x1 /* Return on read errors.  */
+#define        GLOB_NOSORT     0x2 /* Don't sort the names.  */
+
+/* Error returns from `glob'.  */
+#define        GLOB_NOSPACE    1       /* Ran out of memory.  */
+#define        GLOB_ABORTED    2       /* Read error.  */
+#define        GLOB_NOMATCH    3       /* No matches found.  */
+
+#endif