*/
#include <string.h>
#include "imago2.h"
-#include "types.h"
+#include "inttypes.h"
/* pixel-format conversions are sub-optimal at the moment to avoid
* writing a lot of code. optimize at some point ?
#include <string.h>
#include <stdlib.h>
-#include "types.h"
+#include "inttypes.h"
#include "imago2.h"
#include "ftmodule.h"
--- /dev/null
+/*
+colcycle - color cycling image viewer
+Copyright (C) 2016 John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef INT_TYPES_H_
+#define INT_TYPES_H_
+
+#if defined(__DOS__) || defined(__MSDOS__)
+typedef char int8_t;
+typedef short int16_t;
+typedef long int32_t;
+
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned long uint32_t;
+
+typedef unsigned long intptr_t;
+#else
+
+#ifdef _MSC_VER
+typedef __int8 int8_t;
+typedef __int16 int16_t;
+typedef __int32 int32_t;
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int16 uint16_t;
+typedef unsigned __int32 uint32_t;
+
+#ifdef _WIN64
+typedef __int64 intptr_t;
+#else
+typedef __int32 intptr_t;
+#endif
+#else /* not msvc */
+
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199900
+#include <stdint.h>
+#else
+#include <sys/types.h>
+#endif
+
+#endif /* end !msvc */
+#endif /* end !dos */
+
+#endif /* INT_TYPES_H_ */
+++ /dev/null
-/*
-colcycle - color cycling image viewer
-Copyright (C) 2016 John Tsiombikas <nuclear@member.fsf.org>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-#ifndef INT_TYPES_H_
-#define INT_TYPES_H_
-
-#if defined(__DOS__) || defined(__MSDOS__)
-typedef char int8_t;
-typedef short int16_t;
-typedef long int32_t;
-
-typedef unsigned char uint8_t;
-typedef unsigned short uint16_t;
-typedef unsigned long uint32_t;
-
-typedef unsigned long intptr_t;
-#else
-
-#ifdef _MSC_VER
-typedef __int8 int8_t;
-typedef __int16 int16_t;
-typedef __int32 int32_t;
-typedef unsigned __int8 uint8_t;
-typedef unsigned __int16 uint16_t;
-typedef unsigned __int32 uint32_t;
-
-#ifdef _WIN64
-typedef __int64 intptr_t;
-#else
-typedef __int32 intptr_t;
-#endif
-#else /* not msvc */
-
-#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199900
-#include <stdint.h>
-#else
-#include <inttypes.h>
-#endif
-
-#endif /* end !msvc */
-#endif /* end !dos */
-
-#endif /* INT_TYPES_H_ */
--- /dev/null
+#ifndef DOSUTIL_H_
+#define DOSUTIL_H_
+
+#include <dos.h>
+#include <conio.h>
+
+#ifdef __DJGPP__
+#include <pc.h>
+
+#define outp(p, v) outportb(p, v)
+#define outpw(p, v) outportw(p, v)
+
+#define inp(p) inportb(p)
+#define inpw(p) inportw(p)
+#endif
+
+#endif /* DOSUTIL_H_ */
pending = pgsize;
while(pending > 0) {
sz = pending > curmode->bank_size ? curmode->bank_size : pending;
- //memcpy64((void*)0xa0000, pptr, sz >> 3);
- memcpy((void*)0xa0000, pptr, sz);
+ memcpy((void*)phys_to_virt(0xa0000), pptr, sz);
pptr += sz;
pending -= sz;
vbe_setwin(0, ++offs);
#include "keyb.h"
#include "scancode.h"
#include "inttypes.h"
+#include "dosutil.h"
#define KB_INTR 0x9
#define KB_PORT 0x60
#define DONE_INIT prev_intr.pm_offset
static _go32_dpmi_seginfo intr, prev_intr;
-
-#define outp(p, v) outportb(p, v)
-#define inp(p) inportb(p)
#endif
static void INTERRUPT kbintr();
#include "sball.h"
#include "inttypes.h"
+#include "dosutil.h"
struct motion {
int x, y, z;
#define INTERRUPT
static _go32_dpmi_seginfo intr, prev_intr;
-
-#define outp(port, val) outportb(port, val)
-#define inp(port) inportb(port)
#endif
static void INTERRUPT recv_intr(void);
#include "pit8254.h"
#include "inttypes.h"
#include "util.h"
+#include "dosutil.h"
#define PIT_TIMER_INTR 8
#define DOS_TIMER_INTR 0x1c
#define INTERRUPT
static _go32_dpmi_seginfo intr, prev_intr;
-
-#define outp(p, v) outportb(p, v)
#endif
static void INTERRUPT timer_irq();
#include "vga.h"
+#include "vgaregs.h"
#include "cdpmi.h"
+#include "dosutil.h"
+
+static void crtc_write(int reg, unsigned char val);
+static unsigned char crtc_read(int reg);
int vga_setmode(int mode)
{
dpmi_int(0x10, ®s);
return 0;
}
+
+static unsigned short crtc_modex_regs[] = {
+ 0x0d06, /* vertical total */
+ 0x3e07, /* vcount overflow bit */
+ 0x4109, /* double-scan */
+ 0xea10, /* vsync start */
+ 0xac11, /* vsync end & protect */
+ 0xdf12, /* vertical visible */
+ 0x0014, /* no dword mode */
+ 0xe715, /* vblank start */
+ 0x0616, /* vblank end */
+ 0xe317, /* byte mode */
+ 0
+};
+
+int vga_setmodex(void)
+{
+ int i;
+ unsigned char val;
+
+ vga_setmode(0x13);
+
+ /* disable chain-4 (C4=0, O/E=1 (sequential), EM=1 (extmem), A/G=0 (gfx) */
+ outpw(VGA_SC_ADDR_PORT, VGA_SC_MEMMODE_REG | 0x0600);
+ /* pull reset low */
+ outpw(VGA_SC_ADDR_PORT, VGA_SC_RESET_REG | 0x0100);
+ /* 25mhz dot clock, 60hz scan */
+ outp(VGA_MISC_PORT, VGA_MISC_480 | VGA_MISC_PG1 | VGA_MISC_CLK25 |
+ VGA_MISC_CPUEN | VGA_MISC_COLOR);
+ /* return reset high */
+ outpw(VGA_SC_ADDR_PORT, VGA_SC_RESET_REG | 0x0300);
+
+ /* disable CRTC write-protect */
+ crtc_write(CRTC_VRETEND_REG, crtc_read(CRTC_VRETEND_REG) & ~CRTC_VRETEND_PR);
+ /* change CRTC registers */
+ for(i=0; crtc_modex_regs[i]; i++) {
+ outpw(VGA_CRTC_PORT, crtc_modex_regs[i]);
+ }
+
+ vga_planemask(0xf);
+ memset(VGA_FBADDR, 3, 320 * 240 / 4);
+ return 0;
+}
+
+static void crtc_write(int reg, unsigned char val)
+{
+ outpw(VGA_CRTC_ADDR_PORT, reg | ((unsigned int)val << 8));
+}
+
+static unsigned char crtc_read(int reg)
+{
+ outp(VGA_CRTC_ADDR_PORT, reg);
+ return inp(VGA_CRTC_DATA_PORT);
+}
#define VGA_H_
#include "inttypes.h"
+#include "dosutil.h"
+#include "cdpmi.h"
+#include "vgaregs.h"
+
+#define VGA_FBADDR ((void*)phys_to_virt(0xa0000))
int vga_setmode(int mode);
+int vga_setmodex(void);
+
+#define vga_planemask(mask) \
+ outpw(VGA_SC_ADDR_PORT, VGA_SC_MAPMASK_REG | ((unsigned short)(mask) << 8))
#ifdef __WATCOMC__
void vga_setpal(int16_t idx, uint8_t r, uint8_t g, uint8_t b);
--- /dev/null
+#ifndef VGAREGS_H_
+#define VGAREGS_H_
+
+/* ---- VGA registers ---- */
+#define VGA_AC_PORT 0x3c0
+#define VGA_AC_RD_PORT 0x3c1
+#define VGA_SC_ADDR_PORT 0x3c4
+#define VGA_SC_DATA_PORT 0x3c5
+#define VGA_GC_ADDR_PORT 0x3ce
+#define VGA_GC_DATA_PORT 0x3cf
+#define VGA_CRTC_PORT 0x3d4
+#define VGA_CRTC_ADDR_PORT 0x3d4
+#define VGA_CRTC_DATA_PORT 0x3d5
+#define VGA_STAT0_PORT 0x3c2
+#define VGA_STAT1_PORT 0x3da
+#define VGA_MISC_PORT 0x3c2
+#define VGA_MISC_RD_PORT 0x3cc
+
+/* attribute controller registers */
+#define VGA_AC_EN 0x20
+#define VGA_AC_MODE_REG 0x10
+
+/* sequence controller registers */
+#define VGA_SC_RESET_REG 0x00
+#define VGA_SC_CLOCK_REG 0x01
+#define VGA_SC_MAPMASK_REG 0x02
+#define VGA_SC_MEMMODE_REG 0x04
+
+/* graphics controller registers */
+#define VGA_GC_SR_REG 0x00
+#define VGA_GC_SREN_REG 0x01
+#define VGA_GC_ROT_REG 0x03
+#define VGA_GC_MODE_REG 0x05
+#define VGA_GC_MASK_REG 0x08
+
+/* attribute controller mode register (10h) bits */
+#define VGA_AC_MODE_GFX 0x01
+#define VGA_AC_MODE_MONO 0x02
+#define VGA_AC_MODE_LGE 0x04
+#define VGA_AC_MODE_BLINK 0x08
+#define VGA_AC_MODE_PIXPAN 0x20
+#define VGA_AC_MODE_8BIT 0x40
+
+/* misc register bits */
+#define VGA_MISC_COLOR 0x01
+#define VGA_MISC_CPUEN 0x02
+#define VGA_MISC_CLK25 0
+#define VGA_MISC_CLK28 0x04
+#define VGA_MISC_PG1 0x20
+#define VGA_MISC_400 0
+#define VGA_MISC_350 0x40
+#define VGA_MISC_480 0xc0
+
+
+/* CRTC registers */
+#define CRTC_HTOTAL_REG 0x00
+#define CRTC_HEND_REG 0x01
+#define CRTC_HBLSTART_REG 0x02
+#define CRTC_HBLEND_REG 0x03
+#define CRTC_HRETSTART_REG 0x04
+#define CRTC_HRETEND_REG 0x05
+#define CRTC_VTOTAL_REG 0x06
+#define CRTC_OVF_REG 0x07
+#define CRTC_PRESET_REG 0x08
+#define CRTC_MAXSCAN_REG 0x09
+#define CRTC_CURSTART_REG 0x0a
+#define CRTC_CUREND_REG 0x0b
+#define CRTC_STARTH_REG 0x0c
+#define CRTC_STARTL_REG 0x0d
+#define CRTC_CURH_REG 0x0e
+#define CRTC_CURL_REG 0x0f
+#define CRTC_VRETSTART_REG 0x10
+#define CRTC_VRETEND_REG 0x11
+#define CRTC_VEND_REG 0x12
+#define CRTC_OFFSET_REG 0x13
+#define CRTC_UL_REG 0x14
+#define CRTC_VBLSTART_REG 0x15
+#define CRTC_VBLEND_REG 0x16
+#define CRTC_MODE_REG 0x17
+#define CRTC_LCMP_REG 0x18
+
+/* CRTC register bits */
+#define CRTC_VRETEND_PR 0x80
+
+#endif /* VGAREGS_H_ */
+++ /dev/null
-/*
- * dirent.c
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is a part of the mingw-runtime package.
- * No warranty is given; refer to the file DISCLAIMER within the package.
- *
- * Derived from DIRLIB.C by Matt J. Weinstein
- * This note appears in the DIRLIB.H
- * DIRLIB.H by M. J. Weinstein Released to public domain 1-Jan-89
- *
- * Updated by Jeremy Bettis <jeremy@hksys.com>
- * Significantly revised and rewinddir, seekdir and telldir added by Colin
- * Peters <colin@fu.is.saga-u.ac.jp>
- *
- */
-#ifdef _MSC_VER
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <io.h>
-#include <direct.h>
-#include "w32_dirent.h"
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h> /* for GetFileAttributes */
-
-#define SUFFIX "*"
-#define SLASH "\\"
-
-/*
- * opendir
- *
- * Returns a pointer to a DIR structure appropriately filled in to begin
- * searching a directory.
- */
-DIR * opendir (const char *szPath)
-{
- DIR *nd;
- unsigned int rc;
- char szFullPath[MAX_PATH];
-
- errno = 0;
-
- if (!szPath)
- {
- errno = EFAULT;
- return (DIR *) 0;
- }
-
- if (szPath[0] == ('\0'))
- {
- errno = ENOTDIR;
- return (DIR *) 0;
- }
-
- /* Attempt to determine if the given path really is a directory. */
- rc = GetFileAttributes (szPath);
- if (rc == (unsigned int)-1)
- {
- /* call GetLastError for more error info */
- errno = ENOENT;
- return (DIR *) 0;
- }
- if (!(rc & FILE_ATTRIBUTE_DIRECTORY))
- {
- /* Error, entry exists but not a directory. */
- errno = ENOTDIR;
- return (DIR *) 0;
- }
-
- /* Make an absolute pathname. */
- _fullpath (szFullPath, szPath, MAX_PATH);
-
- /* Allocate enough space to store DIR structure and the complete
- * directory path given. */
- nd = (DIR *) malloc (sizeof (DIR) + (strlen (szFullPath)
- + strlen (SLASH)
- + strlen (SUFFIX) + 1)
- * sizeof (char));
-
- if (!nd)
- {
- /* Error, out of memory. */
- errno = ENOMEM;
- return (DIR *) 0;
- }
-
- /* Create the search expression. */
- strcpy (nd->dd_name, szFullPath);
-
- /* Add on a slash if the path does not end with one. */
- if (nd->dd_name[0] != ('\0')
- && strrchr (nd->dd_name, ('/')) != nd->dd_name
- + strlen (nd->dd_name) - 1
- && strrchr (nd->dd_name, ('\\')) != nd->dd_name
- + strlen (nd->dd_name) - 1)
- {
- strcat (nd->dd_name, SLASH);
- }
-
- /* Add on the search pattern */
- strcat (nd->dd_name, SUFFIX);
-
- /* Initialize handle to -1 so that a premature closedir doesn't try
- * to call _findclose on it. */
- nd->dd_handle = -1;
-
- /* Initialize the status. */
- nd->dd_stat = 0;
-
- /* Initialize the dirent structure. ino and reclen are invalid under
- * Win32, and name simply points at the appropriate part of the
- * findfirst structure. */
- nd->dd_dir.d_ino = 0;
- nd->dd_dir.d_reclen = 0;
- nd->dd_dir.d_namlen = 0;
- memset (nd->dd_dir.d_name, 0, FILENAME_MAX);
-
- return nd;
-}
-
-
-/*
- * readdir
- *
- * Return a pointer to a dirent structure filled with the information on the
- * next entry in the directory.
- */
-struct dirent *
-readdir (DIR * dirp)
-{
- errno = 0;
-
- /* Check for valid DIR struct. */
- if (!dirp)
- {
- errno = EFAULT;
- return (struct dirent *) 0;
- }
-
- if (dirp->dd_stat < 0)
- {
- /* We have already returned all files in the directory
- * (or the structure has an invalid dd_stat). */
- return (struct dirent *) 0;
- }
- else if (dirp->dd_stat == 0)
- {
- /* We haven't started the search yet. */
- /* Start the search */
- dirp->dd_handle = (long)_findfirst (dirp->dd_name, &(dirp->dd_dta));
-
- if (dirp->dd_handle == -1)
- {
- /* Whoops! Seems there are no files in that
- * directory. */
- dirp->dd_stat = -1;
- }
- else
- {
- dirp->dd_stat = 1;
- }
- }
- else
- {
- /* Get the next search entry. */
- if (_findnext (dirp->dd_handle, &(dirp->dd_dta)))
- {
- /* We are off the end or otherwise error.
- _findnext sets errno to ENOENT if no more file
- Undo this. */
- DWORD winerr = GetLastError ();
- if (winerr == ERROR_NO_MORE_FILES)
- errno = 0;
- _findclose (dirp->dd_handle);
- dirp->dd_handle = -1;
- dirp->dd_stat = -1;
- }
- else
- {
- /* Update the status to indicate the correct
- * number. */
- dirp->dd_stat++;
- }
- }
-
- if (dirp->dd_stat > 0)
- {
- /* Successfully got an entry. Everything about the file is
- * already appropriately filled in except the length of the
- * file name. */
- dirp->dd_dir.d_namlen = (unsigned short)strlen (dirp->dd_dta.name);
- strcpy (dirp->dd_dir.d_name, dirp->dd_dta.name);
- return &dirp->dd_dir;
- }
-
- return (struct dirent *) 0;
-}
-
-
-/*
- * closedir
- *
- * Frees up resources allocated by opendir.
- */
-int
-closedir (DIR * dirp)
-{
- int rc;
-
- errno = 0;
- rc = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return -1;
- }
-
- if (dirp->dd_handle != -1)
- {
- rc = _findclose (dirp->dd_handle);
- }
-
- /* Delete the dir structure. */
- free (dirp);
-
- return rc;
-}
-
-/*
- * rewinddir
- *
- * Return to the beginning of the directory "stream". We simply call findclose
- * and then reset things like an opendir.
- */
-void
-rewinddir (DIR * dirp)
-{
- errno = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return;
- }
-
- if (dirp->dd_handle != -1)
- {
- _findclose (dirp->dd_handle);
- }
-
- dirp->dd_handle = -1;
- dirp->dd_stat = 0;
-}
-
-/*
- * telldir
- *
- * Returns the "position" in the "directory stream" which can be used with
- * seekdir to go back to an old entry. We simply return the value in stat.
- */
-long
-telldir (DIR * dirp)
-{
- errno = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return -1;
- }
- return dirp->dd_stat;
-}
-
-/*
- * seekdir
- *
- * Seek to an entry previously returned by telldir. We rewind the directory
- * and call readdir repeatedly until either dd_stat is the position number
- * or -1 (off the end). This is not perfect, in that the directory may
- * have changed while we weren't looking. But that is probably the case with
- * any such system.
- */
-void
-seekdir (DIR * dirp, long lPos)
-{
- errno = 0;
-
- if (!dirp)
- {
- errno = EFAULT;
- return;
- }
-
- if (lPos < -1)
- {
- /* Seeking to an invalid position. */
- errno = EINVAL;
- return;
- }
- else if (lPos == -1)
- {
- /* Seek past end. */
- if (dirp->dd_handle != -1)
- {
- _findclose (dirp->dd_handle);
- }
- dirp->dd_handle = -1;
- dirp->dd_stat = -1;
- }
- else
- {
- /* Rewind and read forward to the appropriate index. */
- rewinddir (dirp);
-
- while ((dirp->dd_stat < lPos) && readdir (dirp))
- ;
- }
-}
-
-#else
-
-int _utk_w32_dirent_c_shut_up_stupid_compiler_warning;
-
-#endif /* WIN32 */
+++ /dev/null
-/*
- * DIRENT.H (formerly DIRLIB.H)
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is a part of the mingw-runtime package.
- * No warranty is given; refer to the file DISCLAIMER within the package.
- *
- */
-#ifndef W32_DIRENT_H_
-#define W32_DIRENT_H_
-
-#include <stdio.h>
-#include <io.h>
-
-#ifndef RC_INVOKED
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct dirent
-{
- long d_ino; /* Always zero. */
- unsigned short d_reclen; /* Always zero. */
- unsigned short d_namlen; /* Length of name in d_name. */
- char d_name[FILENAME_MAX]; /* File name. */
-};
-
-/*
- * This is an internal data structure. Good programmers will not use it
- * except as an argument to one of the functions below.
- * dd_stat field is now int (was short in older versions).
- */
-typedef struct
-{
- /* disk transfer area for this dir */
- struct _finddata_t dd_dta;
-
- /* dirent struct to return from dir (NOTE: this makes this thread
- * safe as long as only one thread uses a particular DIR struct at
- * a time) */
- struct dirent dd_dir;
-
- /* _findnext handle */
- long dd_handle;
-
- /*
- * Status of search:
- * 0 = not started yet (next entry to read is first entry)
- * -1 = off the end
- * positive = 0 based index of next entry
- */
- int dd_stat;
-
- /* given path for dir with search pattern (struct is extended) */
- char dd_name[1];
-} DIR;
-
-DIR* __cdecl opendir (const char*);
-struct dirent* __cdecl readdir (DIR*);
-int __cdecl closedir (DIR*);
-void __cdecl rewinddir (DIR*);
-long __cdecl telldir (DIR*);
-void __cdecl seekdir (DIR*, long);
-
-
-/* wide char versions */
-
-struct _wdirent
-{
- long d_ino; /* Always zero. */
- unsigned short d_reclen; /* Always zero. */
- unsigned short d_namlen; /* Length of name in d_name. */
- wchar_t d_name[FILENAME_MAX]; /* File name. */
-};
-
-/*
- * This is an internal data structure. Good programmers will not use it
- * except as an argument to one of the functions below.
- */
-typedef struct
-{
- /* disk transfer area for this dir */
- struct _wfinddata_t dd_dta;
-
- /* dirent struct to return from dir (NOTE: this makes this thread
- * safe as long as only one thread uses a particular DIR struct at
- * a time) */
- struct _wdirent dd_dir;
-
- /* _findnext handle */
- long dd_handle;
-
- /*
- * Status of search:
- * 0 = not started yet (next entry to read is first entry)
- * -1 = off the end
- * positive = 0 based index of next entry
- */
- int dd_stat;
-
- /* given path for dir with search pattern (struct is extended) */
- wchar_t dd_name[1];
-} _WDIR;
-
-
-
-_WDIR* __cdecl _wopendir (const wchar_t*);
-struct _wdirent* __cdecl _wreaddir (_WDIR*);
-int __cdecl _wclosedir (_WDIR*);
-void __cdecl _wrewinddir (_WDIR*);
-long __cdecl _wtelldir (_WDIR*);
-void __cdecl _wseekdir (_WDIR*, long);
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* Not RC_INVOKED */
-
-#endif /* Not _DIRENT_H_ */
--- /dev/null
+/*
+ * dirent.c
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is a part of the mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within the package.
+ *
+ * Derived from DIRLIB.C by Matt J. Weinstein
+ * This note appears in the DIRLIB.H
+ * DIRLIB.H by M. J. Weinstein Released to public domain 1-Jan-89
+ *
+ * Updated by Jeremy Bettis <jeremy@hksys.com>
+ * Significantly revised and rewinddir, seekdir and telldir added by Colin
+ * Peters <colin@fu.is.saga-u.ac.jp>
+ *
+ */
+#ifdef _MSC_VER
+
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <io.h>
+#include <direct.h>
+#include "w32dir.h"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h> /* for GetFileAttributes */
+
+#define SUFFIX "*"
+#define SLASH "\\"
+
+/*
+ * opendir
+ *
+ * Returns a pointer to a DIR structure appropriately filled in to begin
+ * searching a directory.
+ */
+DIR * opendir (const char *szPath)
+{
+ DIR *nd;
+ unsigned int rc;
+ char szFullPath[MAX_PATH];
+
+ errno = 0;
+
+ if (!szPath)
+ {
+ errno = EFAULT;
+ return (DIR *) 0;
+ }
+
+ if (szPath[0] == ('\0'))
+ {
+ errno = ENOTDIR;
+ return (DIR *) 0;
+ }
+
+ /* Attempt to determine if the given path really is a directory. */
+ rc = GetFileAttributes (szPath);
+ if (rc == (unsigned int)-1)
+ {
+ /* call GetLastError for more error info */
+ errno = ENOENT;
+ return (DIR *) 0;
+ }
+ if (!(rc & FILE_ATTRIBUTE_DIRECTORY))
+ {
+ /* Error, entry exists but not a directory. */
+ errno = ENOTDIR;
+ return (DIR *) 0;
+ }
+
+ /* Make an absolute pathname. */
+ _fullpath (szFullPath, szPath, MAX_PATH);
+
+ /* Allocate enough space to store DIR structure and the complete
+ * directory path given. */
+ nd = (DIR *) malloc (sizeof (DIR) + (strlen (szFullPath)
+ + strlen (SLASH)
+ + strlen (SUFFIX) + 1)
+ * sizeof (char));
+
+ if (!nd)
+ {
+ /* Error, out of memory. */
+ errno = ENOMEM;
+ return (DIR *) 0;
+ }
+
+ /* Create the search expression. */
+ strcpy (nd->dd_name, szFullPath);
+
+ /* Add on a slash if the path does not end with one. */
+ if (nd->dd_name[0] != ('\0')
+ && strrchr (nd->dd_name, ('/')) != nd->dd_name
+ + strlen (nd->dd_name) - 1
+ && strrchr (nd->dd_name, ('\\')) != nd->dd_name
+ + strlen (nd->dd_name) - 1)
+ {
+ strcat (nd->dd_name, SLASH);
+ }
+
+ /* Add on the search pattern */
+ strcat (nd->dd_name, SUFFIX);
+
+ /* Initialize handle to -1 so that a premature closedir doesn't try
+ * to call _findclose on it. */
+ nd->dd_handle = -1;
+
+ /* Initialize the status. */
+ nd->dd_stat = 0;
+
+ /* Initialize the dirent structure. ino and reclen are invalid under
+ * Win32, and name simply points at the appropriate part of the
+ * findfirst structure. */
+ nd->dd_dir.d_ino = 0;
+ nd->dd_dir.d_reclen = 0;
+ nd->dd_dir.d_namlen = 0;
+ memset (nd->dd_dir.d_name, 0, FILENAME_MAX);
+
+ return nd;
+}
+
+
+/*
+ * readdir
+ *
+ * Return a pointer to a dirent structure filled with the information on the
+ * next entry in the directory.
+ */
+struct dirent *
+readdir (DIR * dirp)
+{
+ errno = 0;
+
+ /* Check for valid DIR struct. */
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return (struct dirent *) 0;
+ }
+
+ if (dirp->dd_stat < 0)
+ {
+ /* We have already returned all files in the directory
+ * (or the structure has an invalid dd_stat). */
+ return (struct dirent *) 0;
+ }
+ else if (dirp->dd_stat == 0)
+ {
+ /* We haven't started the search yet. */
+ /* Start the search */
+ dirp->dd_handle = (long)_findfirst (dirp->dd_name, &(dirp->dd_dta));
+
+ if (dirp->dd_handle == -1)
+ {
+ /* Whoops! Seems there are no files in that
+ * directory. */
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ dirp->dd_stat = 1;
+ }
+ }
+ else
+ {
+ /* Get the next search entry. */
+ if (_findnext (dirp->dd_handle, &(dirp->dd_dta)))
+ {
+ /* We are off the end or otherwise error.
+ _findnext sets errno to ENOENT if no more file
+ Undo this. */
+ DWORD winerr = GetLastError ();
+ if (winerr == ERROR_NO_MORE_FILES)
+ errno = 0;
+ _findclose (dirp->dd_handle);
+ dirp->dd_handle = -1;
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ /* Update the status to indicate the correct
+ * number. */
+ dirp->dd_stat++;
+ }
+ }
+
+ if (dirp->dd_stat > 0)
+ {
+ /* Successfully got an entry. Everything about the file is
+ * already appropriately filled in except the length of the
+ * file name. */
+ dirp->dd_dir.d_namlen = (unsigned short)strlen (dirp->dd_dta.name);
+ strcpy (dirp->dd_dir.d_name, dirp->dd_dta.name);
+ return &dirp->dd_dir;
+ }
+
+ return (struct dirent *) 0;
+}
+
+
+/*
+ * closedir
+ *
+ * Frees up resources allocated by opendir.
+ */
+int
+closedir (DIR * dirp)
+{
+ int rc;
+
+ errno = 0;
+ rc = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return -1;
+ }
+
+ if (dirp->dd_handle != -1)
+ {
+ rc = _findclose (dirp->dd_handle);
+ }
+
+ /* Delete the dir structure. */
+ free (dirp);
+
+ return rc;
+}
+
+/*
+ * rewinddir
+ *
+ * Return to the beginning of the directory "stream". We simply call findclose
+ * and then reset things like an opendir.
+ */
+void
+rewinddir (DIR * dirp)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return;
+ }
+
+ if (dirp->dd_handle != -1)
+ {
+ _findclose (dirp->dd_handle);
+ }
+
+ dirp->dd_handle = -1;
+ dirp->dd_stat = 0;
+}
+
+/*
+ * telldir
+ *
+ * Returns the "position" in the "directory stream" which can be used with
+ * seekdir to go back to an old entry. We simply return the value in stat.
+ */
+long
+telldir (DIR * dirp)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return -1;
+ }
+ return dirp->dd_stat;
+}
+
+/*
+ * seekdir
+ *
+ * Seek to an entry previously returned by telldir. We rewind the directory
+ * and call readdir repeatedly until either dd_stat is the position number
+ * or -1 (off the end). This is not perfect, in that the directory may
+ * have changed while we weren't looking. But that is probably the case with
+ * any such system.
+ */
+void
+seekdir (DIR * dirp, long lPos)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return;
+ }
+
+ if (lPos < -1)
+ {
+ /* Seeking to an invalid position. */
+ errno = EINVAL;
+ return;
+ }
+ else if (lPos == -1)
+ {
+ /* Seek past end. */
+ if (dirp->dd_handle != -1)
+ {
+ _findclose (dirp->dd_handle);
+ }
+ dirp->dd_handle = -1;
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ /* Rewind and read forward to the appropriate index. */
+ rewinddir (dirp);
+
+ while ((dirp->dd_stat < lPos) && readdir (dirp))
+ ;
+ }
+}
+
+#else
+
+int _utk_w32_dirent_c_shut_up_stupid_compiler_warning;
+
+#endif /* WIN32 */
--- /dev/null
+/*
+ * DIRENT.H (formerly DIRLIB.H)
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is a part of the mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within the package.
+ *
+ */
+#ifndef W32_DIRENT_H_
+#define W32_DIRENT_H_
+
+#include <stdio.h>
+#include <io.h>
+
+#ifndef RC_INVOKED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct dirent
+{
+ long d_ino; /* Always zero. */
+ unsigned short d_reclen; /* Always zero. */
+ unsigned short d_namlen; /* Length of name in d_name. */
+ char d_name[FILENAME_MAX]; /* File name. */
+};
+
+/*
+ * This is an internal data structure. Good programmers will not use it
+ * except as an argument to one of the functions below.
+ * dd_stat field is now int (was short in older versions).
+ */
+typedef struct
+{
+ /* disk transfer area for this dir */
+ struct _finddata_t dd_dta;
+
+ /* dirent struct to return from dir (NOTE: this makes this thread
+ * safe as long as only one thread uses a particular DIR struct at
+ * a time) */
+ struct dirent dd_dir;
+
+ /* _findnext handle */
+ long dd_handle;
+
+ /*
+ * Status of search:
+ * 0 = not started yet (next entry to read is first entry)
+ * -1 = off the end
+ * positive = 0 based index of next entry
+ */
+ int dd_stat;
+
+ /* given path for dir with search pattern (struct is extended) */
+ char dd_name[1];
+} DIR;
+
+DIR* __cdecl opendir (const char*);
+struct dirent* __cdecl readdir (DIR*);
+int __cdecl closedir (DIR*);
+void __cdecl rewinddir (DIR*);
+long __cdecl telldir (DIR*);
+void __cdecl seekdir (DIR*, long);
+
+
+/* wide char versions */
+
+struct _wdirent
+{
+ long d_ino; /* Always zero. */
+ unsigned short d_reclen; /* Always zero. */
+ unsigned short d_namlen; /* Length of name in d_name. */
+ wchar_t d_name[FILENAME_MAX]; /* File name. */
+};
+
+/*
+ * This is an internal data structure. Good programmers will not use it
+ * except as an argument to one of the functions below.
+ */
+typedef struct
+{
+ /* disk transfer area for this dir */
+ struct _wfinddata_t dd_dta;
+
+ /* dirent struct to return from dir (NOTE: this makes this thread
+ * safe as long as only one thread uses a particular DIR struct at
+ * a time) */
+ struct _wdirent dd_dir;
+
+ /* _findnext handle */
+ long dd_handle;
+
+ /*
+ * Status of search:
+ * 0 = not started yet (next entry to read is first entry)
+ * -1 = off the end
+ * positive = 0 based index of next entry
+ */
+ int dd_stat;
+
+ /* given path for dir with search pattern (struct is extended) */
+ wchar_t dd_name[1];
+} _WDIR;
+
+
+
+_WDIR* __cdecl _wopendir (const wchar_t*);
+struct _wdirent* __cdecl _wreaddir (_WDIR*);
+int __cdecl _wclosedir (_WDIR*);
+void __cdecl _wrewinddir (_WDIR*);
+long __cdecl _wtelldir (_WDIR*);
+void __cdecl _wseekdir (_WDIR*, long);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* Not RC_INVOKED */
+
+#endif /* Not _DIRENT_H_ */
projects / dosdemo / commitdiff