fixed a bug that the remaining buffer capacity is calculated incorrectly when returning a footer to directory listing.

switched snprintf to qse_mbsxfmt() and qse_mbsxfmts().
added qse_mbsfmts()/qse_wcsfmts() and variants

qse/cmd/http/httpd.c

@@ -14,7 +14,6 @@
 
 #include <signal.h>
 #include <locale.h>
-#include <stdio.h>
 
 #if defined(_WIN32)
 #	include <winsock2.h>

qse/cmd/http/ursd.c

@@ -17,7 +17,6 @@
 
 #include <signal.h>
 #include <locale.h>
-#include <stdio.h>
 
 #if defined(_WIN32)
 #	include <winsock2.h>

qse/include/qse/cmn/str.h

@@ -706,7 +706,7 @@ QSE_EXPORT qse_size_t qse_mbsvfmt (
  *   terminating null. When \a buf is #QSE_NULL, it returns the number of 
  *   characters that would have been written excluding the terminating null
  *   if \a buf has not been #QSE_NULL. If conversion from a wide-character 
- *   string failure, it returns (qse_size_t)-1.
+ *   string fails, it returns (qse_size_t)-1.
  */
 QSE_EXPORT qse_size_t qse_mbsxfmt (
 	qse_mchar_t*       buf,
@@ -722,6 +722,36 @@ QSE_EXPORT qse_size_t qse_mbsxvfmt (
 	va_list            ap
 );
 
+QSE_EXPORT qse_size_t qse_mbsfmts (
+	qse_mchar_t*       buf,
+	const qse_mchar_t* fmt,
+	...
+);
+
+QSE_EXPORT qse_size_t qse_mbsvfmts (
+	qse_mchar_t*       buf,
+	const qse_mchar_t* fmt,
+	va_list            ap
+);
+
+/**
+ * The qse_mbsxfmt() function behaves the same as qse_mbsxfmt() except
+ * that it returns (qse_size_t)-1 if the buffer is not large enough. 
+ */
+QSE_EXPORT qse_size_t qse_mbsxfmts (
+	qse_mchar_t*       buf,
+	qse_size_t         bsz,
+	const qse_mchar_t* fmt,
+	...
+);
+
+QSE_EXPORT qse_size_t qse_mbsxvfmts (
+	qse_mchar_t*       buf,
+	qse_size_t         bsz,
+	const qse_mchar_t* fmt,
+	va_list            ap
+);
+
 QSE_EXPORT qse_size_t qse_wcsfmt (
 	qse_wchar_t*       buf,
 	const qse_wchar_t* fmt,
@@ -763,17 +793,56 @@ QSE_EXPORT qse_size_t qse_wcsxvfmt (
 	va_list            ap
 );
 
+QSE_EXPORT qse_size_t qse_wcsfmts (
+	qse_wchar_t*       buf,
+	const qse_wchar_t* fmt,
+	...
+);
+
+QSE_EXPORT qse_size_t qse_wcsvfmts (
+	qse_wchar_t*       buf,
+	const qse_wchar_t* fmt,
+	va_list            ap
+);
+
+/**
+ * The qse_wcsxfmts() function behaves the same as qse_wcsxfmt() except
+ * that it returns (qse_size_t)-1 if the buffer is not large enough.
+ */
+QSE_EXPORT qse_size_t qse_wcsxfmts (
+	qse_wchar_t*       buf,
+	qse_size_t         bsz,
+	const qse_wchar_t* fmt,
+	...
+);
+
+QSE_EXPORT qse_size_t qse_wcsxvfmts (
+	qse_wchar_t*       buf,
+	qse_size_t         bsz,
+	const qse_wchar_t* fmt,
+	va_list            ap
+);
 
 #if defined(QSE_CHAR_IS_MCHAR)
 #	define qse_strfmt qse_mbsfmt
 #	define qse_strvfmt qse_mbsvfmt
 #	define qse_strxfmt qse_mbsxfmt
 #	define qse_strxvfmt qse_mbsxvfmt
+
+#	define qse_strfmts qse_mbsfmts
+#	define qse_strvfmts qse_mbsvfmts
+#	define qse_strxfmts qse_mbsxfmts
+#	define qse_strxvfmts qse_mbsxvfmts
 #else
 #	define qse_strfmt qse_wcsfmt
 #	define qse_strvfmt qse_wcsvfmt
 #	define qse_strxfmt qse_wcsxfmt
 #	define qse_strxvfmt qse_wcsxvfmt
+
+#	define qse_strfmts qse_wcsfmts
+#	define qse_strvfmts qse_wcsvfmts
+#	define qse_strxfmts qse_wcsxfmts
+#	define qse_strxvfmts qse_wcsxvfmts
 #endif
 
 /**

qse/lib/cmn/str-fmt.c

@@ -77,6 +77,35 @@ static int put_wchar (qse_wchar_t c, void* ctx)
 	return 0; 
 }
 
+static int put_mchar_strict (qse_mchar_t c, void* ctx)
+{
+	mbuf_t* buf = (mbuf_t*)ctx;
+
+	if (buf->len < buf->capa) 
+	{
+		buf->ptr[buf->len++] = c;
+		return 1;
+	}
+
+	/* buffer is full stop. return error */
+	return -1;
+}
+
+static int put_wchar_strict (qse_wchar_t c, void* ctx)
+{
+	wbuf_t* buf = (wbuf_t*)ctx;
+
+	if (buf->len < buf->capa) 
+	{
+		buf->ptr[buf->len++] = c;
+		return 1;
+	}
+
+	/* buffer is full stop. return error */
+	return -1; 
+}
+
+
 static int wcs_to_mbs (
 	const qse_wchar_t* wcs, qse_size_t* wcslen,
 	qse_mchar_t* mbs, qse_size_t* mbslen, void* ctx)
@@ -135,6 +164,35 @@ static int mbs_to_wcs (
 #undef strvfmt
 #undef strxvfmt
 
+#define T(x) QSE_MT(x)
+#define char_t qse_mchar_t
+#define buf_t mbuf_t
+#define fmtout_t qse_mfmtout_t
+#define fmtout qse_mfmtout
+#define put_char_null put_mchar_null
+#define put_char put_mchar_strict
+#define conv_char wcs_to_mbs
+#define strfmt qse_mbsfmts
+#define strxfmt qse_mbsxfmts
+#define strvfmt qse_mbsvfmts
+#define strxvfmt qse_mbsxvfmts
+#include "str-fmt.h"
+
+/* ----------------------------------- */
+
+#undef T
+#undef char_t
+#undef buf_t
+#undef fmtout_t
+#undef fmtout
+#undef put_char_null
+#undef put_char
+#undef conv_char
+#undef strfmt
+#undef strxfmt
+#undef strvfmt
+#undef strxvfmt
+
 #define T(x) QSE_WT(x)
 #define char_t qse_wchar_t
 #define buf_t wbuf_t
@@ -149,3 +207,31 @@ static int mbs_to_wcs (
 #define strxvfmt qse_wcsxvfmt
 #include "str-fmt.h"
 
+/* ----------------------------------- */
+
+#undef T
+#undef char_t
+#undef buf_t
+#undef fmtout_t
+#undef fmtout
+#undef put_char_null
+#undef put_char
+#undef conv_char
+#undef strfmt
+#undef strxfmt
+#undef strvfmt
+#undef strxvfmt
+
+#define T(x) QSE_WT(x)
+#define char_t qse_wchar_t
+#define buf_t wbuf_t
+#define fmtout_t qse_wfmtout_t
+#define fmtout qse_wfmtout
+#define put_char_null put_wchar_null
+#define put_char put_wchar_strict
+#define conv_char mbs_to_wcs
+#define strfmt qse_wcsfmts
+#define strxfmt qse_wcsxfmts
+#define strvfmt qse_wcsvfmts
+#define strxvfmt qse_wcsxvfmts
+#include "str-fmt.h"

qse/lib/http/http.c

@@ -24,11 +24,6 @@
 #include <qse/cmn/htb.h>
 #include "../cmn/mem.h"
 
-#include <stdio.h> /* for snprintf. TODO: remove this. */
-#if defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && (__WATCOMC__ < 1200))
-#	define snprintf _snprintf 
-#endif
-
 int qse_comparehttpversions (
 	const qse_http_version_t* v1,
 	const qse_http_version_t* v2)
@@ -378,9 +373,7 @@ qse_mchar_t* qse_fmthttptime (
 
 	qse_gmtime (nt, &bt);
 
-/* TODO: avoid using snprintf () */
+	qse_mbsxfmt (
-
-	snprintf (
 		buf, bufsz,
 		QSE_MT("%s, %d %s %d %02d:%02d:%02d GMT"),
 		wday_name[bt.wday].s,

qse/lib/http/httpd-cgi.c

@@ -35,11 +35,6 @@
 #	include "../cmn/syscall.h"
 #endif
 
-#include <stdio.h> /* TODO: remove this */
-#if defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && (__WATCOMC__ < 1200))
-#	define snprintf _snprintf 
-#endif
-
 typedef struct task_cgi_arg_t task_cgi_arg_t;
 struct task_cgi_arg_t 
 {
@@ -238,27 +233,19 @@ static int cgi_htrd_peek_script_output (qse_htrd_t* htrd, qse_htre_t* req)
 
 	if (req->attr.status)
 	{
-		qse_mchar_t buf[128];
 		int nstatus;
 		qse_mchar_t* endptr;
 
 /* TODO: check the syntax of status value??? if not numeric??? */
 		QSE_MBSTONUM (nstatus, req->attr.status, &endptr, 10);
 
-		snprintf (buf, QSE_COUNTOF(buf), 
-			QSE_MT("HTTP/%d.%d %d "),
-			cgi->version.major, 
-			cgi->version.minor, 
-			nstatus
-		);
-
 		/* 
 		Would it need this kind of extra work?
 		while (QSE_ISMSPACE(*endptr)) endptr++;
 		if (*endptr == QSE_MT('\0')) ....
 		*/
 
-		if (qse_mbs_cat (cgi->res, buf) == (qse_size_t)-1 ||
+		if (qse_mbs_fcat (cgi->res, QSE_MT("HTTP/%d.%d %d "), cgi->version.major, cgi->version.minor, nstatus) == (qse_size_t)-1 ||
 		    qse_mbs_cat (cgi->res, endptr) == (qse_size_t)-1 ||
 		    qse_mbs_cat (cgi->res, QSE_MT("\r\n")) == (qse_size_t)-1) 
 		{
@@ -269,16 +256,12 @@ static int cgi_htrd_peek_script_output (qse_htrd_t* htrd, qse_htre_t* req)
 	else 
 	{
 		const qse_htre_hdrval_t* location;
-		qse_mchar_t buf[128];
 
 		location = qse_htre_getheaderval (req, QSE_MT("Location"));
 		if (location)
 		{
-			snprintf (buf, QSE_COUNTOF(buf),
+			if (qse_mbs_fcat (cgi->res, QSE_MT("HTTP/%d.%d 301 Moved Permanently\r\n"),
-				QSE_MT("HTTP/%d.%d 301 Moved Permanently\r\n"),
+			                  cgi->version.major, cgi->version.minor) == (qse_size_t)-1) 
-				cgi->version.major, cgi->version.minor
-			);
-			if (qse_mbs_cat (cgi->res, buf) == (qse_size_t)-1) 
 			{
 				cgi->httpd->errnum = QSE_HTTPD_ENOMEM;
 				return -1;
@@ -289,11 +272,8 @@ static int cgi_htrd_peek_script_output (qse_htrd_t* htrd, qse_htre_t* req)
 		}
 		else
 		{
-			snprintf (buf, QSE_COUNTOF(buf),
+			if (qse_mbs_fcat (cgi->res, QSE_MT("HTTP/%d.%d 200 OK\r\n"),
-				QSE_MT("HTTP/%d.%d 200 OK\r\n"),
+			                  cgi->version.major, cgi->version.minor) == (qse_size_t)-1) 
-				cgi->version.major, cgi->version.minor
-			);
-			if (qse_mbs_cat (cgi->res, buf) == (qse_size_t)-1) 
 			{
 				cgi->httpd->errnum = QSE_HTTPD_ENOMEM;
 				return -1;
@@ -467,7 +447,7 @@ static int cgi_add_env (
 #endif
 
 	qse_env_insertmbs (env, QSE_MT("GATEWAY_INTERFACE"), QSE_MT("CGI/1.1"));
-	snprintf (buf, QSE_COUNTOF(buf), QSE_MT("HTTP/%d.%d"), (int)v->major, (int)v->minor);
+	qse_mbsxfmt (buf, QSE_COUNTOF(buf), QSE_MT("HTTP/%d.%d"), (int)v->major, (int)v->minor);
 	qse_env_insertmbs (env, QSE_MT("SERVER_PROTOCOL"), buf);
 
 	qse_env_insertmbs (env, QSE_MT("SCRIPT_FILENAME"), path);

qse/lib/http/httpd-dir.c

@@ -23,11 +23,6 @@
 #include <qse/cmn/str.h>
 #include <qse/cmn/fmt.h>
 
-#include <stdio.h> /* TODO: remove this */
-#if defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && (__WATCOMC__ < 1200))
-#	define snprintf _snprintf 
-#endif
-
 typedef struct task_dir_t task_dir_t;
 struct task_dir_t
 {
@@ -141,14 +136,14 @@ static void fill_chunk_length (task_dseg_t* ctx)
 	while (ctx->buf[ctx->bufpos] == QSE_MT(' ')) ctx->bufpos++;
 }
 
-static int format_dirent (
+static qse_size_t format_dirent (
 	qse_httpd_t* httpd, 
 	qse_httpd_client_t* client, 
 	const qse_httpd_dirent_t* dirent,
 	qse_mchar_t* buf, int bufsz)
 {
 /* TODO: page encoding?? utf-8??? or derive name from cmgr or current locale??? */
-	int n;
+	qse_size_t x;
 
 	qse_mchar_t* encname;
 	qse_mchar_t* escname;
@@ -176,9 +171,9 @@ static int format_dirent (
 	}
 
 	qse_localtime (&dirent->stat.mtime, &bt);
-	snprintf (tmbuf, QSE_COUNTOF(tmbuf),
+	qse_mbsxfmt (tmbuf, QSE_COUNTOF(tmbuf),
 		QSE_MT("%04d-%02d-%02d %02d:%02d:%02d"),
-        		bt.year + QSE_BTIME_YEAR_BASE, bt.mon + 1, bt.mday,
+		bt.year + QSE_BTIME_YEAR_BASE, bt.mon + 1, bt.mday,
 		bt.hour, bt.min, bt.sec);
 
 	if (dirent->stat.isdir)
@@ -193,7 +188,7 @@ static int format_dirent (
 		);
 	}
 
-	n = snprintf (
+	x = qse_mbsxfmts (
 		buf, bufsz,
 		QSE_MT("<tr><td class='name'><a href='%s%s' class='%s'>%s%s</a></td><td class='time'>%s</td><td class='size'>%s</td></tr>\n"),
 		encname,
@@ -207,28 +202,24 @@ static int format_dirent (
 	if (escname != dirent->name) qse_httpd_freemem (httpd, escname);
 	if (encname != dirent->name) QSE_MMGR_FREE (httpd->mmgr, encname);
 
-	if (n <= -1 || n >= bufsz)
+	if (x == (qse_size_t)-1) httpd->errnum = QSE_HTTPD_ENOBUF;
-	{
+	return x;
-		httpd->errnum = QSE_HTTPD_ENOBUF;
-		return -1;
-	}
-
-	return n;
 }
 
 static int add_footer (qse_httpd_t* httpd, qse_httpd_client_t* client, task_dseg_t* ctx)
 {
-	int x, rem;
+	qse_size_t x;
+	int rem;
 
-	rem = ctx->chunked? (ctx->buflen - 5): ctx->buflen;
+	rem = ctx->chunked? (ctx->bufrem - 5): ctx->bufrem;
 	if (rem < 1)
 	{
 		httpd->errnum = QSE_HTTPD_ENOBUF;
 		return -1;
 	}
 
-	x = snprintf (&ctx->buf[ctx->buflen], rem, QSE_MT("</table></div>\n<div class='footer'>%s</div>\n</body></html>"), ctx->foot.ptr);
+	x = qse_mbsxfmts (&ctx->buf[ctx->buflen], rem, QSE_MT("</table></div>\n<div class='footer'>%s</div>\n</body></html>"), ctx->foot.ptr);
-	if (x <= -1 || x >= rem) 
+	if (x == (qse_size_t)-1) 
 	{
 		httpd->errnum = QSE_HTTPD_ENOBUF;
 		return -1;
@@ -257,7 +248,7 @@ static int task_main_dseg (
 {
 	task_dseg_t* ctx = (task_dseg_t*)task->ctx;
 	qse_ssize_t n;
-	int x;
+	qse_size_t x;
 
 	if (ctx->bufpos < ctx->buflen) 
 	{
@@ -335,17 +326,14 @@ static int task_main_dseg (
 		qpath_esc = qse_httpd_escapehtml (httpd, ctx->qpath.ptr);
 		if (qpath_esc == QSE_NULL) return -1;
 
-		x = snprintf (&ctx->buf[ctx->buflen], ctx->bufrem,
+		x = qse_mbsxfmts (&ctx->buf[ctx->buflen], ctx->bufrem,
 			QSE_MT("<html><head>%s</head>\n<body>\n<div class='header'>%s</div>\n<div class='body'><table>%s"), ctx->head.ptr, qpath_esc,
 			(is_root? QSE_MT(""): QSE_MT("<tr><td class='name'><a href='../' class='dir'>..</a></td><td class='time'></td><td class='size'></td></tr>\n"))
 		);
 
 		if (qpath_esc != ctx->qpath.ptr) qse_httpd_freemem (httpd, qpath_esc);
 
-#if 0
+		if (x == (qse_size_t)-1)
-		if (x <= -1)
-#endif
-		if (x <= -1 || x >= ctx->bufrem)
 		{
 			/* return an error if the buffer is too small to 
 			 * hold the header(httpd->errnum == QSE_HTTPD_ENOBUF).
@@ -394,12 +382,11 @@ static int task_main_dseg (
 			break;
 		}
 
-
 		if (qse_mbscmp (ctx->dent.name, QSE_MT(".")) != 0 &&
 		    qse_mbscmp (ctx->dent.name, QSE_MT("..")) != 0)
 		{
 			x = format_dirent (httpd, client, &ctx->dent, &ctx->buf[ctx->buflen], ctx->bufrem); 
-			if (x <= -1)
+			if (x == (qse_size_t)-1)
 			{
 				/* buffer not large enough to hold this entry */
 				if (ctx->dcount <= 0) 

qse/lib/http/httpd-std.c

@@ -107,11 +107,6 @@
 #	include <openssl/engine.h>
 #endif
 
-#include <stdio.h> /* TODO: remove this */
-#if defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && (__WATCOMC__ < 1200))
-#	define snprintf _snprintf 
-#endif
-
 typedef struct server_xtn_t server_xtn_t;
 struct server_xtn_t
 {
@@ -2142,8 +2137,6 @@ if (qse_htre_getcontentlen(req) > 0)
 			 *
 			 * NOTE: CONNECT is implemented to ignore many headers like
 			 *       'Expect: 100-continue' and 'Connection: keep-alive'. */
-
-/* TODO: CHECK if CONNECT is allowed ... */
 			qse_httpd_discardcontent (httpd, req);
 		}
 		else 
@@ -2272,7 +2265,7 @@ static int poke_request (
 static int format_error (
 	qse_httpd_t* httpd, qse_httpd_client_t* client, int code, qse_mchar_t* buf, int bufsz)
 {
-	int n;
+	qse_size_t n;
 	server_xtn_t* server_xtn;
 	const qse_mchar_t* head, * foot, * msg;
 
@@ -2286,17 +2279,16 @@ static int format_error (
 
 	msg = qse_httpstatustombs(code);
 
-/* TODO: use my own version of snprintf replacement */
+	n = qse_mbsxfmts (buf, bufsz,
-	n = snprintf (buf, bufsz,
 		QSE_MT("<html><head>%s<title>%s</title></head><body><div class='header'>HTTP ERROR</div><div class='body'>%d %s</div><div class='footer'>%s</div></body></html>"), 
 		head, msg, code, msg, foot);
-	if (n < 0 || n >= bufsz) 
+	if (n == (qse_size_t)-1)
 	{
 		httpd->errnum = QSE_HTTPD_ENOBUF;
 		return -1;
 	}
 
-	return n;
+	return 0;
 }
 
 static void impede_httpd (qse_httpd_t* httpd)