Initial commit

1 files changed, 69 insertions, 0 deletions

diff --git a/pkg/tbtables/tbbcmt.x b/pkg/tbtables/tbbcmt.x
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+include <ctype.h>		# for IS_WHITE
+include "tbtables.h"
+define	INCR_BUFFSIZE	1024	# minimum amount by which buffer is increased
+
+# tbbcmt -- append comment line to buffer
+# This routine takes a line of text and appends it to the comment buffer for
+# the current text table.  If the line of text does not begin with "#", then
+# "# " will first be appended to the comment buffer.  If the line is not
+# terminated with a newline, a newline will be appended to the comment buffer
+# after appending the line.  Since each comment line ends with a newline,
+# if we print (or write to a file) the full comment buffer, it should come out
+# on several lines.
+# If the comment buffer is not long enough it will be reallocated.
+
+# Phil Hodge,  6-Mar-1992  Subroutine created.
+# Phil Hodge, 22-Apr-1994  Check to be sure TB_COMMENT is not NULL;
+#			prefix with # and/or append newline if necessary.
+# Phil Hodge, 11-May-1994  Just return if input string is empty.
+
+procedure tbbcmt (tp, buf)
+
+pointer tp			# i: pointer to table descriptor
+char	buf[ARB]		# i: string to be appended to comment buffer
+#--
+int	len1			# length of string to be appended
+int	len2			# length of comment buffer
+int	ip			# for ignoring leading whitespace
+int	new_sz_comment		# new value of allocated buffer length
+int	strlen()
+
+begin
+	if (buf[1] == EOS)
+	    return
+
+	len1 = strlen (buf)
+
+	if (TB_COMMENT(tp) == NULL) {
+
+	    # Allocate the comment buffer.
+	    new_sz_comment = len1 + INCR_BUFFSIZE
+	    call malloc (TB_COMMENT(tp), new_sz_comment, TY_CHAR)
+	    TB_SZ_COMMENT(tp) = new_sz_comment
+
+	} else {
+
+	    len2 = strlen (Memc[TB_COMMENT(tp)])
+
+	    # If the combined length is too long, reallocate the comment buffer.
+	    if (len1 + len2 > TB_SZ_COMMENT(tp)) {
+		new_sz_comment = TB_SZ_COMMENT(tp) + len1 + INCR_BUFFSIZE
+		call realloc (TB_COMMENT(tp), new_sz_comment, TY_CHAR)
+		TB_SZ_COMMENT(tp) = new_sz_comment
+	    }
+	}
+
+	# Does the line of text begin with "#"?
+	ip = 1
+	while (IS_WHITE(buf[ip]))
+	    ip = ip + 1
+	if (buf[ip] != '#' && buf[ip] != EOS && buf[ip] != '\n')
+	    call strcat ("# ", Memc[TB_COMMENT(tp)], TB_SZ_COMMENT(tp))
+
+	# Append the string to the comment buffer.
+	call strcat (buf, Memc[TB_COMMENT(tp)], TB_SZ_COMMENT(tp))
+
+	# Not newline terminated?
+	if (buf[len1] != '\n')
+	    call strcat ("\n", Memc[TB_COMMENT(tp)], TB_SZ_COMMENT(tp))
+end