--- np2/common/textfile.c	2005/03/18 09:23:10	1.5
+++ np2/common/textfile.c	2006/12/10 12:45:46	1.10
@@ -1,135 +1,605 @@
 #include	"compiler.h"
-#include	"dosio.h"
+#include	"strres.h"
 #include	"textfile.h"
+#if defined(SUPPORT_TEXTCNV)
+#include	"textcnv.h"
+#endif
+#if defined(SUPPORT_ARC)
+#include	"arc.h"
+#else
+#include	"dosio.h"
+#endif
+
+
+// ---- arc support?
+
+#if defined(SUPPORT_ARC)
+#define	_FILEH				ARCFH
+#define	_FILEH_INVALID		NULL
+#define	_FSEEK_SET			ARCSEEK_SET
+#define _file_open_rb		arcex_fileopen
+#define _file_create		arcex_filecreate
+#define	_file_read			arc_fileread
+#define	_file_write			arc_filewrite
+#define	_file_seek			arc_fileseek
+#define	_file_close			arc_fileclose
+#else
+#define	_FILEH				FILEH
+#define	_FILEH_INVALID		FILEH_INVALID
+#define	_FSEEK_SET			FSEEK_SET
+#define _file_open_rb		file_open_rb
+#define _file_create		file_create
+#define	_file_read			file_read
+#define	_file_write			file_write
+#define	_file_seek			file_seek
+#define	_file_close			file_close
+#endif
+
+enum {
+	TFMODE_READ		= 0x01,
+	TFMODE_WRITE	= 0x02
+};
+
+struct _textfile;
+typedef struct _textfile		_TEXTFILE;
+typedef struct _textfile		*TEXTFILE;
+
+typedef BRESULT (*READFN)(TEXTFILE tf, void *buffer, UINT size);
+
+struct _textfile {
+	UINT8	mode;
+	UINT8	width;
+#if defined(SUPPORT_TEXTCNV)
+	UINT8	access;
+	UINT8	xendian;
+#endif
+	_FILEH	fh;
+	long	fpos;
+	UINT8	*buf;
+	UINT	bufsize;
+	UINT	bufpos;
+	UINT	bufrem;
+	READFN	readfn;
+#if defined(SUPPORT_TEXTCNV)
+	UINT8		*cnvbuf;
+	UINT		cnvbufsize;
+	TCTOOEM		tooem;
+	TCFROMOEM	fromoem;
+#endif
+};
 
 
-static BRESULT getnextstrings(TEXTFILEH fh) {
+// ---- ReadA
+
+static UINT readbufferA(TEXTFILE tf) {
 
 	UINT	rsize;
 
-	if (!fh) {
-		return(FAILURE);
+	if (tf->bufrem == 0) {
+		rsize = _file_read(tf->fh, tf->buf, tf->bufsize);
+		rsize = rsize / sizeof(char);
+		tf->fpos += rsize * sizeof(char);
+		tf->bufpos = 0;
+		tf->bufrem = rsize;
 	}
-	if (file_seek((FILEH)fh->fh, fh->fhpos, 0) != fh->fhpos) {
-		return(FAILURE);
+	return(tf->bufrem);
+}
+
+static BRESULT readlineA(TEXTFILE tf, void *buffer, UINT size) {
+
+	char	*dst;
+	BOOL	crlf;
+	BRESULT	ret;
+	char	c;
+const char	*src;
+	UINT	pos;
+
+	if (size == 0) {
+		dst = NULL;
+		size = 0;
 	}
-	rsize = file_read((FILEH)fh->fh, fh + 1, fh->buffersize);
-	if (rsize == (UINT)-1) {
-		return(FAILURE);
+	else {
+		dst = (char *)buffer;
+		size--;
+	}
+
+	crlf = FALSE;
+	ret = FAILURE;
+	c = 0;
+	do {
+		if (readbufferA(tf) == 0) {
+			break;
+		}
+		ret = SUCCESS;
+		src = (char *)tf->buf;
+		src += tf->bufpos;
+		pos = 0;
+		while(pos<tf->bufrem) {
+			c = src[pos];
+			pos++;
+			if ((c == 0x0d) || (c == 0x0a)) {
+				crlf = TRUE;
+				break;
+			}
+			if (size) {
+				size--;
+				*dst++ = c;
+			}
+		}
+		tf->bufpos += pos;
+		tf->bufrem -= pos;
+	} while(!crlf);
+	if ((crlf) && (c == 0x0d)) {
+		if (readbufferA(tf) != 0) {
+			src = (char *)tf->buf;
+			src += tf->bufpos;
+			if (*src == 0x0a) {
+				tf->bufpos++;
+				tf->bufrem--;
+			}
+		}
+	}
+	if (dst) {
+		*dst = '\0';
+	}
+	return(ret);
+}
+
+
+// ---- ReadW
+
+static UINT readbufferW(TEXTFILE tf) {
+
+	UINT	rsize;
+	UINT8	*buf;
+
+	if (tf->bufrem == 0) {
+		buf = tf->buf;
+		rsize = _file_read(tf->fh, buf, tf->bufsize);
+		rsize = rsize / sizeof(UINT16);
+		tf->fpos += rsize * sizeof(UINT16);
+		tf->bufpos = 0;
+		tf->bufrem = rsize;
+#if defined(SUPPORT_TEXTCNV)
+		if (tf->xendian) {
+			textcnv_swapendian16(buf, rsize);
+		}
+#endif	// defined(SUPPORT_TEXTCNV)
+	}
+	return(tf->bufrem);
+}
+
+static BRESULT readlineW(TEXTFILE tf, void *buffer, UINT size) {
+
+	UINT16		*dst;
+	BOOL		crlf;
+	BRESULT		ret;
+	UINT16		c;
+const UINT16	*src;
+	UINT		pos;
+
+	if (size == 0) {
+		dst = NULL;
+		size = 0;
+	}
+	else {
+		dst = (UINT16 *)buffer;
+		size--;
+	}
+	crlf = FALSE;
+	ret = FAILURE;
+	c = 0;
+	do {
+		if (readbufferW(tf) == 0) {
+			break;
+		}
+		ret = SUCCESS;
+		src = (UINT16 *)tf->buf;
+		src += tf->bufpos;
+		pos = 0;
+		while(pos<tf->bufrem) {
+			c = src[pos];
+			pos++;
+			if ((c == 0x0d) || (c == 0x0a)) {
+				crlf = TRUE;
+				break;
+			}
+			if (size) {
+				size--;
+				*dst++ = c;
+			}
+		}
+		tf->bufpos += pos;
+		tf->bufrem -= pos;
+	} while(!crlf);
+	if ((crlf) && (c == 0x0d)) {
+		if (readbufferW(tf) != 0) {
+			src = (UINT16 *)tf->buf;
+			src += tf->bufpos;
+			if (*src == 0x0a) {
+				tf->bufpos++;
+				tf->bufrem--;
+			}
+		}
+	}
+	if (dst) {
+		*dst = '\0';
+	}
+	return(ret);
+}
+
+
+// ---- read with convert
+
+#if defined(SUPPORT_TEXTCNV)
+static BRESULT readlineAtoOEM(TEXTFILE tf, void *buffer, UINT size) {
+
+	BRESULT	ret;
+
+	ret = readlineA(tf, tf->cnvbuf, tf->cnvbufsize);
+	if (ret == SUCCESS) {
+		(tf->tooem)(buffer, size, tf->cnvbuf, (UINT)-1);
+	}
+	return(ret);
+}
+
+static BRESULT readlineWtoOEM(TEXTFILE tf, void *buffer, UINT size) {
+
+	BRESULT	ret;
+
+	ret = readlineW(tf, tf->cnvbuf, tf->cnvbufsize / 2);
+	if (ret == SUCCESS) {
+		(tf->tooem)(buffer, size, tf->cnvbuf, (UINT)-1);
+	}
+	return(ret);
+}
+#endif	// defined(SUPPORT_TEXTCNV)
+
+
+// ---- write
+
+static BRESULT flushwritebuffer(TEXTFILE tf) {
+
+	UINT	size;
+	UINT	wsize;
+
+	if (tf->bufpos) {
+		size = tf->bufpos * tf->width;
+		wsize = _file_write(tf->fh, tf->buf, size);
+		tf->fpos += wsize;
+		if (wsize != size) {
+			return(FAILURE);
+		}
 	}
-	fh->fhpos += rsize;
-	fh->pos = 0;
-	fh->remain = rsize;
 	return(SUCCESS);
 }
 
-TEXTFILEH textfile_open(const OEMCHAR *filename, UINT buffersize) {
+static BRESULT writebufferA(TEXTFILE tf, const void *buffer, UINT size) {
+
+	BRESULT	ret;
+const UINT8	*p;
+	UINT	wsize;
+
+	ret = SUCCESS;
+	p = (UINT8 *)buffer;
+	while(size) {
+		wsize = min(size, tf->bufrem);
+		if (wsize) {
+			CopyMemory(tf->buf + tf->bufpos, p, wsize);
+			p += wsize;
+			size -= wsize;
+			tf->bufpos += wsize;
+			tf->bufrem -= wsize;
+		}
+		if (tf->bufrem == 0) {
+			ret = flushwritebuffer(tf);
+			tf->bufpos = 0;
+			tf->bufrem = tf->bufsize / sizeof(char);
+		}
+	}
+	return(ret);
+}
+
+static BRESULT writebufferW(TEXTFILE tf, const void *buffer, UINT size) {
+
+	BRESULT	ret;
+const UINT8	*p;
+	UINT8	*q;
+	UINT	wsize;
+
+	ret = SUCCESS;
+	p = (UINT8 *)buffer;
+	while(size) {
+		wsize = min(size, tf->bufrem);
+		if (wsize) {
+			q = tf->buf + (tf->bufpos * sizeof(UINT16));
+			CopyMemory(q, p, wsize * sizeof(UINT16));
+#if defined(SUPPORT_TEXTCNV)
+			if (tf->xendian) {
+				textcnv_swapendian16(q, wsize);
+			}
+#endif	// defined(SUPPORT_TEXTCNV)
+			p += wsize * sizeof(UINT16);
+			size -= wsize;
+			tf->bufpos += wsize;
+			tf->bufrem -= wsize;
+		}
+		if (tf->bufrem == 0) {
+			ret = flushwritebuffer(tf);
+			tf->bufpos = 0;
+			tf->bufrem = tf->bufsize / sizeof(UINT16);
+		}
+	}
+	return(ret);
+}
 
-	FILEH		fh;
-	TEXTFILEH	ret;
 
+// ----
+
+static TEXTFILEH registfile(_FILEH fh, UINT buffersize,
+											const UINT8 *hdr, UINT hdrsize) {
+
+	UINT		cnvbufsize;
+#if defined(SUPPORT_TEXTCNV)
+	TCINF		inf;
+#endif
+	long		fpos;
+	UINT8		width;
+	READFN		readfn;
+	TEXTFILE	ret;
+
+	buffersize = buffersize & (~3);
 	if (buffersize < 256) {
 		buffersize = 256;
 	}
-	fh = file_open(filename);
-	if (fh == FILEH_INVALID) {
-		goto tfo_err1;
+	cnvbufsize = 0;
+#if defined(SUPPORT_TEXTCNV)
+	if (textcnv_getinfo(&inf, hdr, hdrsize) == 0) {
+		return(NULL);
+	}
+	fpos = inf.hdrsize;
+	width = inf.width;
+	if (inf.width == 1) {
+		readfn = (inf.tooem != NULL)?readlineAtoOEM:readlineA;
+	}
+	else if (inf.width == 2) {
+		buffersize = buffersize * 2;
+		readfn = (inf.tooem != NULL)?readlineWtoOEM:readlineW;
+	}
+	else {
+		return(NULL);
+	}
+	if ((inf.tooem != NULL) || (inf.fromoem != NULL)) {
+		cnvbufsize = buffersize;
+	}
+#else	// defined(SUPPORT_TEXTCNV)
+	fpos = 0;
+	width = 1;
+	if ((hdrsize >= 3) &&
+		(hdr[0] == 0xef) && (hdr[1] == 0xbb) && (hdr[2] == 0xbf)) {
+		// UTF-8
+		fpos = 3;
+	}
+	else if ((hdrsize >= 2) && (hdr[0] == 0xff) && (hdr[1] == 0xfe)) {
+		// UCSLE
+		fpos = 2;
+		width = 2;
+#if defined(BYTESEX_BIG)
+		return(NULL);
+#endif	// defined(BYTESEX_BIG)
+	}
+	else if ((hdrsize >= 2) && (hdr[0] == 0xfe) && (hdr[1] == 0xff)) {
+		// UCS2BE
+		fpos = 2;
+		width = 2;
+#if defined(BYTESEX_LITTLE)
+		return(NULL);
+#endif	// defined(BYTESEX_LITTLE)
 	}
-	ret = (TEXTFILEH)_MALLOC(sizeof(_TEXTFILE) + buffersize, filename);
+	if (width != sizeof(OEMCHAR)) {
+		return(NULL);
+	}
+	buffersize = buffersize * sizeof(OEMCHAR);
+	readfn = (width == 2)?readlineW:readlineA;
+#endif	// defined(SUPPORT_TEXTCNV)
+
+	ret = (TEXTFILE)_MALLOC(sizeof(_TEXTFILE) + buffersize + cnvbufsize,
+																"TEXTFILE");
 	if (ret == NULL) {
-		goto tfo_err2;
+		return(NULL);
 	}
-	ZeroMemory(ret, sizeof(_TEXTFILE) + buffersize);
-	ret->fh = (long)fh;
-	ret->buffersize = buffersize;
-#if defined(OSLANG_UTF8)
-	getnextstrings(ret);
-	if (ret->remain >= 3) {
-		char *ptr;
-		ptr = ((char *)(ret + 1)) + ret->pos;
-		if ((ptr[0] == (char)0xef) &&
-			(ptr[1] == (char)0xbb) &&
-			(ptr[2] == (char)0xbf)) {
-			ret->pos += 3;
-			ret->remain -= 3;
+	ZeroMemory(ret, sizeof(_TEXTFILE));
+//	ret->mode = 0;
+	ret->width = width;
+	ret->fh = fh;
+	ret->fpos = fpos;
+	ret->buf = (UINT8 *)(ret + 1);
+	ret->bufsize = buffersize;
+	ret->readfn = readfn;
+#if defined(SUPPORT_TEXTCNV)
+	ret->access = inf.caps;
+	ret->xendian = inf.xendian;
+	ret->cnvbuf = ret->buf + buffersize;
+	ret->cnvbufsize = cnvbufsize;
+	ret->tooem = inf.tooem;
+	ret->fromoem = inf.fromoem;
+#endif	// defined(SUPPORT_TEXTCNV)
+	return((TEXTFILEH)ret);
+}
+
+static BRESULT flushfile(TEXTFILE tf) {
+
+	BRESULT	ret;
+	long	fpos;
+	UINT	size;
+	UINT	wsize;
+
+	ret = SUCCESS;
+	if (tf->mode & TFMODE_READ) {
+		fpos = tf->fpos - (tf->bufrem * tf->width);
+		tf->fpos = _file_seek(tf->fh, fpos, _FSEEK_SET);
+		if (tf->fpos != fpos) {
+			ret = FAILURE;
 		}
 	}
-#endif
+	else if (tf->mode & TFMODE_WRITE) {
+		if (tf->bufpos) {
+			size = tf->bufpos * tf->width;
+			wsize = _file_write(tf->fh, tf->buf, size);
+			if (wsize != size) {
+				ret = FAILURE;
+			}
+			tf->fpos += wsize;
+		}
+	}
+	else {
+		fpos = _file_seek(tf->fh, tf->fpos, _FSEEK_SET);
+		if (tf->fpos != fpos) {
+			ret = FAILURE;
+		}
+		tf->fpos = fpos;
+	}
+	tf->mode = 0;
+	tf->bufpos = 0;
+	tf->bufrem = 0;
 	return(ret);
+}
+
+
+// ----
+
+TEXTFILEH textfile_open(const OEMCHAR *filename, UINT buffersize) {
+
+	_FILEH		fh;
+	UINT8		hdr[4];
+	UINT		hdrsize;
+	TEXTFILEH	ret;
 
-tfo_err2:
-	file_close(fh);
+	fh = _file_open_rb(filename);
+	if (fh == _FILEH_INVALID) {
+		goto tfo_err;
+	}
+	hdrsize = _file_read(fh, hdr, sizeof(hdr));
+	ret = registfile(fh, buffersize, hdr, hdrsize);
+	if (ret) {
+		return(ret);
+	}
+	_file_close(fh);
 
-tfo_err1:
+tfo_err:
 	return(NULL);
 }
 
-void textfile_close(TEXTFILEH fh) {
+TEXTFILEH textfile_create(const OEMCHAR *filename, UINT buffersize) {
 
-	if (fh) {
-		file_close((FILEH)fh->fh);
-		_MFREE(fh);
+	_FILEH		fh;
+const UINT8		*hdr;
+	UINT		hdrsize;
+	TEXTFILEH	ret;
+
+	fh = _file_create(filename);
+	if (fh == _FILEH_INVALID) {
+		goto tfc_err1;
+	}
+#if defined(OSLANG_UTF8)
+	hdr = str_utf8;
+	hdrsize = sizeof(str_utf8);
+#elif defined(OSLANG_UCS2) 
+	hdr = (UINT8 *)str_ucs2;
+	hdrsize = sizeof(str_ucs2);
+#else
+	hdr = NULL;
+	hdrsize = 0;
+#endif
+	if ((hdrsize) && (_file_write(fh, hdr, hdrsize) != hdrsize)) {
+		goto tfc_err2;
+	}
+	ret = registfile(fh, buffersize, hdr, hdrsize);
+	if (ret) {
+		return(ret);
 	}
+
+tfc_err2:
+	_file_close(fh);
+
+tfc_err1:
+	return(NULL);
 }
 
-BRESULT textfile_read(TEXTFILEH fh, OEMCHAR *buffer, UINT size) {
+BRESULT textfile_read(TEXTFILEH tfh, OEMCHAR *buffer, UINT size) {
 
-	char	c = '\0';
-	char	*p;
-	BOOL	crlf;
-	BRESULT	ret = FAILURE;
+	TEXTFILE	tf;
 
-	if ((fh) && (size > 0)) {
-		size--;
-		crlf = FALSE;
-		do {
-			if ((!fh->remain) && (getnextstrings(fh))) {
-				return(FAILURE);
-			}
-			if (!fh->remain) {
-				break;
-			}
-			ret = SUCCESS;
-			p = (char *)(fh + 1);
-			p += fh->pos;
-			while((fh->remain) && (size)) {
-				c = *p++;
-				fh->pos++;
-				fh->remain--;
-				if ((c == 0x0d) || (c == 0x0a)) {
-					crlf = TRUE;
-					break;
-				}
-				*buffer++ = c;
-				size--;
-			}
-			if (!crlf) {
-				while((fh->remain) && (size)) {
-					c = *p++;
-					fh->pos++;
-					fh->remain--;
-					if ((c == 0x0d) || (c == 0x0a)) {
-						crlf = TRUE;
-						break;
-					}
-				}
-			}
-		} while(!crlf);
-		if ((crlf) && (c == 0x0d)) {
-			if ((!fh->remain) && (getnextstrings(fh))) {
-				return(FAILURE);
-			}
-			if (fh->remain) {
-				p = (char *)(fh + 1);
-				p += fh->pos;
-				if (*p == 0x0a) {
-					fh->pos++;
-					fh->remain--;
-				}
-			}
+	tf = (TEXTFILE)tfh;
+	if (tf == NULL) {
+		return(FAILURE);
+	}
+#if defined(SUPPORT_TEXTCNV)
+	if (!(tf->access & TEXTCNV_READ)) {
+		return(FAILURE);
+	}
+#endif	// defined(SUPPORT_TEXTCNV)
+	if (!(tf->mode & TFMODE_READ)) {
+		flushfile(tf);
+		tf->mode = TFMODE_READ;
+	}
+	return((tf->readfn)(tf, buffer, size));
+}
+
+BRESULT textfile_write(TEXTFILEH tfh, const OEMCHAR *buffer) {
+
+	TEXTFILE	tf;
+const void		*buf;
+	UINT		leng;
+
+	tf = (TEXTFILE)tfh;
+	if (tf == NULL) {
+		return(FAILURE);
+	}
+#if defined(SUPPORT_TEXTCNV)
+	if (!(tf->access & TEXTCNV_WRITE)) {
+		return(FAILURE);
+	}
+#endif	// defined(SUPPORT_TEXTCNV)
+	if (!(tf->mode & TFMODE_WRITE)) {
+		flushfile(tf);
+		tf->mode = TFMODE_WRITE;
+	}
+	leng = OEMSTRLEN(buffer);
+#if defined(SUPPORT_TEXTCNV)
+	if (tf->fromoem != NULL) {
+		leng = (tf->fromoem)(tf->cnvbuf, tf->cnvbufsize / tf->width,
+																buffer, leng);
+		buf = tf->cnvbuf;
+	}
+	else {
+		buf = buffer;
+	}
+#else	// defined(SUPPORT_TEXTCNV)
+	buf = buffer;
+#endif	// defined(SUPPORT_TEXTCNV)
+	if (tf->width == 1) {
+		return(writebufferA(tf, buf, leng));
+	}
+	else if (tf->width == 2) {
+		return(writebufferW(tf, buf, leng));
+	}
+	else {
+		return(FAILURE);
+	}
+}
+
+void textfile_close(TEXTFILEH tfh) {
+
+	TEXTFILE	tf;
+
+	tf = (TEXTFILE)tfh;
+	if (tf) {
+		if (tf->mode & TFMODE_WRITE) {
+			flushfile(tf);
 		}
-		*buffer = '\0';
+		_file_close(tf->fh);
+		_MFREE(tf);
 	}
-	return(ret);
 }