WebSVN – tendra.SVN – Diff – /branches/tendra5/src/producers/common/utility/buffer.c

+/*
+ * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of The TenDRA Project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id$
+ */
 /*
     		 Crown Copyright (c) 1997
     This TenDRA(r) Computer Program is subject to Copyright
     owned by the United Kingdom Secretary of State for Defence
     acting through the Defence Evaluation and Research Agency
     (DERA).  It is made available to Recipients with a
     royalty-free licence for its use, reproduction, transfer
     to other parties and amendment for any purpose not excluding
     product development provided that any such use et cetera
     shall be deemed to be acceptance of the following conditions:-
         (1) Its Recipients shall ensure that this Notice is
         reproduced upon any copies or amended versions of it;
         (2) Any amended version of it shall be clearly marked to
         show both the nature of and the organisation responsible
         for the relevant amendment or amendments;
         (3) Its onward transfer from a recipient to another
         party shall be deemed to be that party's acceptance of
         these conditions;
         (4) DERA gives no warranty or assurance as to its
         quality or suitability for any purpose and DERA accepts
         no liability whatsoever in relation to any use to which
         it may be put.
 */
 #include "c_types.h"
 #include "error.h"
 #include "buffer.h"
 #include "ustring.h"
 #include "xalloc.h"
 /*
     FREE A BUFFER
     This routine frees the contents of the buffer bf.
 */
-void free_buffer
+void
-    PROTO_N ( ( bf ) )
-    PROTO_T ( BUFFER *bf )
+free_buffer(BUFFER *bf)
 {
-    xfree_nof ( bf->start ) ;
+	xfree_nof(bf->start);
-    bf->start = NULL ;
+	bf->start = NULL;
-    bf->posn = NULL ;
+	bf->posn = NULL;
-    bf->end = NULL ;
+	bf->end = NULL;
-    return ;
+	return;
 }
 /*
     CLEAR A BUFFER
     This routine sets the current position of the buffer bf to the start
     of the buffer and sets the buffer file to f.  It returns bf.
 */
-BUFFER *clear_buffer
-    PROTO_N ( ( bf, f ) )
-    PROTO_T ( BUFFER *bf X FILE *f )
-{
-    bf->posn = bf->start ;
-    bf->file = f ;
-    return ( bf ) ;
-}
-/*
+BUFFER *
-    OUTPUT THE CONTENTS OF A BUFFER
-    This routine outputs the content of the buffer bf to the associated
-    file and resets the position to the start of the buffer.  If fl is
-    true then the file is flushed.
-*/
-void output_buffer
-    PROTO_N ( ( bf, fl ) )
-    PROTO_T ( BUFFER *bf X int fl )
+clear_buffer(BUFFER *bf, FILE *f)
+{
-    FILE *f = bf->file ;
-    if ( f ) {
-	string s = bf->start ;
+	bf->posn = bf->start;
-	size_t n = ( size_t ) ( bf->posn - s ) ;
-	if ( n ) {
-	    IGNORE fwrite ( ( gen_ptr ) s, sizeof ( character ), n, f ) ;
-	    if ( fl ) IGNORE fflush_v ( f ) ;
-	    bf->posn = s ;
+	bf->file = f;
-	}
-    }
-    return ;
+	return (bf);
+}
 /*
+    OUTPUT THE CONTENTS OF A BUFFER
+    This routine outputs the content of the buffer bf to the associated
+    file and resets the position to the start of the buffer.  If fl is
+    true then the file is flushed.
+*/
+void
+output_buffer(BUFFER *bf, int fl)
+{
+	FILE *f = bf->file;
+	if (f) {
+		string s = bf->start;
+		size_t n = (size_t)(bf->posn - s);
+		if (n) {
+			IGNORE fwrite((gen_ptr)s, sizeof(character), n, f);
+			if (fl) {
+				IGNORE fflush_v(f);
+			}
+			bf->posn = s;
+		}
+	}
+	return;
+}
+/*
     EXTEND A BUFFER
     This routine extends the buffer bf.  s gives a pointer into the buffer,
     the corresponding position in the extended buffer is returned.
 */
-string extend_buffer
+string
-    PROTO_N ( ( bf, s ) )
-    PROTO_T ( BUFFER *bf X string s )
+extend_buffer(BUFFER *bf, string s)
+{
-    string p = bf->start ;
+	string p = bf->start;
-    gen_size m = ( gen_size ) ( s - p ) ;
+	gen_size m = (gen_size)(s - p);
-    gen_size n = ( gen_size ) ( bf->end - p ) + 500 ;
+	gen_size n = (gen_size)(bf->end - p) + 500;
-    p = xrealloc_nof ( p, character, n + 12 ) ;
+	p = xrealloc_nof(p, character, n + 12);
-    bf->start = p ;
+	bf->start = p;
-    bf->end = p + n ;
+	bf->end = p + n;
-    return ( p + m ) ;
+	return (p + m);
+}
 /*
     MAKE SPACE IN A BUFFER
     This routine makes space for at least m + 1 characters in the buffer
     bf following the position s.  It returns the corresponding position
     in the extended buffer.
 */
-string stretch_buffer
+string
-    PROTO_N ( ( bf, s, m ) )
-    PROTO_T ( BUFFER *bf X string s X gen_size m )
+stretch_buffer(BUFFER *bf, string s, gen_size m)
 {
-    gen_size n = ( gen_size ) ( bf->end - s ) ;
+	gen_size n = (gen_size)(bf->end - s);
-    while ( m >= n ) {
+	while (m >= n) {
-	s = extend_buffer ( bf, s ) ;
+		s = extend_buffer(bf, s);
-	n = ( gen_size ) ( bf->end - s ) ;
+		n = (gen_size)(bf->end - s);
-    }
+	}
-    return ( s ) ;
+	return (s);
 }
 /*
     ADD A CHARACTER TO A BUFFER
     This routine adds the character c to the buffer bf.  Note that bf will
     not necessarily be null terminated after this routine.
 */
-void bfputc
+void
-    PROTO_N ( ( bf, c ) )
-    PROTO_T ( BUFFER *bf X int c )
+bfputc(BUFFER *bf, int c)
+{
-    string p = bf->posn ;
+	string p = bf->posn;
-    if ( p == bf->end ) p = extend_buffer ( bf, p ) ;
+	if (p == bf->end)p = extend_buffer(bf, p);
-    *p = ( character ) c ;
+	*p = (character)c;
-    bf->posn = p + 1 ;
+	bf->posn = p + 1;
-    return ;
+	return;
+}
 /*
     ADD A STRING TO A BUFFER
     This routine adds the string s to the buffer bf.  Note that this
     guarantees that bf will be null terminated.
 */
-void bfputs
+void
-    PROTO_N ( ( bf, s ) )
-    PROTO_T ( BUFFER *bf X string s )
+bfputs(BUFFER *bf, string s)
+{
-    gen_size m = ( gen_size ) ustrlen ( s ) ;
+	gen_size m = (gen_size)ustrlen(s);
-    string p = stretch_buffer ( bf, bf->posn, m ) ;
+	string p = stretch_buffer(bf, bf->posn, m);
-    ustrcpy_v ( p, s ) ;
+	ustrcpy_v(p, s);
-    bf->posn = p + m ;
+	bf->posn = p + m;
-    return ;
+	return;
+}
 /*
     ADD A FORMATTED STRING TO A BUFFER
     This routine adds the string s to the buffer bf, using printf-like
     format characters to print the extra arguments.  Note that this
     guarantees that bf will be null terminated.
 */
-void bfprintf
+void
-    PROTO_V ( ( BUFFER *bf, CONST char *s, ... ) ) /* VARARGS */
+bfprintf(BUFFER *bf, CONST char *s, ...) /* VARARGS */
+{
-    char c ;
+	char c;
-    string p ;
+	string p;
-    gen_size m ;
+	gen_size m;
-    va_list args ;
+	va_list args;
 #if FS_STDARG
-    va_start ( args, s ) ;
+	va_start(args, s);
 #else
-    BUFFER *bf ;
+	BUFFER *bf;
-    CONST char *s ;
+	CONST char *s;
-    va_start ( args ) ;
+	va_start(args);
-    bf = va_arg ( args, BUFFER * ) ;
+	bf = va_arg(args, BUFFER *);
-    s = va_arg ( args, CONST char * ) ;
+	s = va_arg(args, CONST char *);
 #endif
-    m = ( gen_size ) strlen ( s ) ;
+	m = (gen_size)strlen(s);
-    p = stretch_buffer ( bf, bf->posn, m ) ;
+	p = stretch_buffer(bf, bf->posn, m);
-    /* Scan through format string */
+	/* Scan through format string */
-    while ( c = *( s++ ), c != 0 ) {
+	while (c = *(s++), c != 0) {
-	if ( c == '%' ) {
+		if (c == '%') {
-	    int ext = 0 ;
+			int ext = 0;
-	    c = *( s++ ) ;
+			c = *(s++);
-	    if ( c == 'l' ) {
+			if (c == 'l') {
-		c = *( s++ ) ;
+				c = *(s++);
-		ext = 1 ;
+				ext = 1;
-	    }
+			}
-	    switch ( c ) {
+			switch (c) {
-		case 'c' : {
+			case 'c': {
-		    /* '%c' -> character (passed as int) */
+				/* '%c' -> character (passed as int) */
-		    int ac = va_arg ( args, int ) ;
+				int ac = va_arg(args, int);
-		    *( p++ ) = ( character ) ac ;
+				*(p++) = (character)ac;
-		    break ;
+				break;
-		}
+			}
-		case 'd' : {
+			case 'd': {
-		    p = stretch_buffer ( bf, p, ( gen_size ) 50 ) ;
+				p = stretch_buffer(bf, p,(gen_size)50);
-		    if ( ext ) {
+				if (ext) {
-			/* '%ld' -> long */
+					/* '%ld' -> long */
-			long al = va_arg ( args, long ) ;
+					long al = va_arg(args, long);
-			sprintf_v ( strlit ( p ), "%ld", al ) ;
+					sprintf_v(strlit(p), "%ld", al);
-		    } else {
+				} else {
-			/* '%d' -> int */
+					/* '%d' -> int */
-			int ad = va_arg ( args, int ) ;
+					int ad = va_arg(args, int);
-			sprintf_v ( strlit ( p ), "%d", ad ) ;
+					sprintf_v(strlit(p), "%d", ad);
-		    }
+				}
-		    p = p + ustrlen ( p ) ;
+				p = p + ustrlen(p);
-		    break ;
+				break;
-		}
+			}
-		case 's' : {
+			case 's': {
-		    /* '%s' -> string */
+				/* '%s' -> string */
-		    string as = va_arg ( args, string ) ;
+				string as = va_arg(args, string);
-		    if ( as ) {
+				if (as) {
-			m = ( gen_size ) ustrlen ( as ) ;
+					m = (gen_size)ustrlen(as);
-			p = stretch_buffer ( bf, p, m ) ;
+					p = stretch_buffer(bf, p, m);
-			ustrcpy_v ( p, as ) ;
+					ustrcpy_v(p, as);
-			p += m ;
+					p += m;
-		    }
+				}
-		    break ;
+				break;
-		}
+			}
-		case 'u' : {
+			case 'u': {
-		    p = stretch_buffer ( bf, p, ( gen_size ) 50 ) ;
+				p = stretch_buffer(bf, p,(gen_size)50);
-		    if ( ext ) {
+				if (ext) {
-			/* '%lu' -> unsigned long */
+					/* '%lu' -> unsigned long */
+					unsigned long al =
-			unsigned long al = va_arg ( args, unsigned long ) ;
+					    va_arg(args, unsigned long);
-			sprintf_v ( strlit ( p ), "%lu", al ) ;
+					sprintf_v(strlit(p), "%lu", al);
-		    } else {
+				} else {
-			/* '%u' -> unsigned */
+					/* '%u' -> unsigned */
-			unsigned au = va_arg ( args, unsigned ) ;
+					unsigned au = va_arg(args, unsigned);
-			sprintf_v ( strlit ( p ), "%u", au ) ;
+					sprintf_v(strlit(p), "%u", au);
-		    }
+				}
-		    p = p + ustrlen ( p ) ;
+				p = p + ustrlen(p);
-		    break ;
+				break;
-		}
+			}
-		case 'x' : {
+			case 'x': {
-		    /* '%x' -> char * */
+				/* '%x' -> char * */
-		    char *ax = va_arg ( args, char * ) ;
+				char *ax = va_arg(args, char *);
-		    if ( ax ) {
+				if (ax) {
-			m = ( gen_size ) strlen ( ax ) ;
+					m = (gen_size)strlen(ax);
-			p = stretch_buffer ( bf, p, m ) ;
+					p = stretch_buffer(bf, p, m);
-			ustrcpy_v ( p, ustrlit ( ax ) ) ;
+					ustrcpy_v(p, ustrlit(ax));
-			p += m ;
+					p += m;
-		    }
+				}
-		    break ;
+				break;
-		}
+			}
-		case '%' : {
+			case '%': {
-		    /* '%%' -> percent */
+				/* '%%' -> percent */
-		    *( p++ ) = ( character ) c ;
+				*(p++) = (character)c;
-		    break ;
+				break;
-		}
+			}
-		default : {
+			default : {
-		    /* Other characters */
+				/* Other characters */
-		    FAIL ( Unknown format character ) ;
+				FAIL(Unknown format character);
-		    s = "<ERROR>" ;
+				s = "<ERROR>";
-		    break ;
+				break;
+			}
+			}
+		} else {
+			*(p++) = (character)c;
+		}
-	    }
-	} else {
-	    *( p++ ) = ( character ) c ;
+	}
-    }
-    *p = 0 ;
+	*p = 0;
-    bf->posn = p ;
+	bf->posn = p;
-    va_end ( args ) ;
+	va_end(args);
-    return ;
+	return;
+}
 /*
     READ A STRING FROM A BUFFER
     This routine reads at most n characters from the buffer bf into the
     string s.  It returns the number of characters read.
 */
-gen_size bfread
+gen_size
-    PROTO_N ( ( bf, s, n ) )
-    PROTO_T ( BUFFER *bf X string s X gen_size n )
+bfread(BUFFER *bf, string s, gen_size n)
+{
-    string p = bf->posn ;
+	string p = bf->posn;
-    gen_size m = ( gen_size ) ( bf->end - p ) ;
+	gen_size m = (gen_size)(bf->end - p);
-    if ( m > n ) m = n ;
+	if (m > n)m = n;
-    if ( m ) {
+	if (m) {
-	xumemcpy ( s, p, m ) ;
+		xumemcpy(s, p, m);
-	bf->posn = p + m ;
+		bf->posn = p + m;
-    }
+	}
-    return ( m ) ;
+	return (m);
+}

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(root)/branches/tendra5/src/producers/common/utility/buffer.c – Rev 5 → 6