Initial commit

1 files changed, 151 insertions, 0 deletions

diff --git a/pkg/system/help/xhelp/xhprint.x b/pkg/system/help/xhelp/xhprint.x
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+++ b/pkg/system/help/xhelp/xhprint.x
@@ -0,0 +1,151 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	<error.h>
+include <ctype.h>
+include	<ttyset.h>
+include "../help.h"
+include	"xhelp.h"
+
+
+# XH_PRINT_HELP -- Print the requested help topic.
+
+procedure xh_print_help (xh, topic, curpack, name)
+
+pointer xh                                      #i task struct pointer
+char    topic[ARB]                           	#i help topic
+char    curpack[ARB]                           	#i current package
+char    name[ARB]                           	#i printer name
+
+int	fd
+char	fname[SZ_FNAME]
+
+int	open()
+errchk	open
+
+begin
+	# Open a temp file with the help information.
+	call mktemp ("tmp$xhelpi", fname, SZ_FNAME)
+	fd = open (fname, NEW_FILE, TEXT_FILE)
+	call xh_get_help (fd, topic, curpack, "", HF_PS, HELPDB(xh),
+	    "all", OPTION(xh))
+	call close (fd)
+
+	call strcpy (name, PRINTER(xh), SZ_FNAME)
+	call xh_lprint (fname, PRINTER(xh))
+
+	# Clean up.
+	call delete (fname)
+end
+
+
+# XH_LPRINT -- Print a file or files on the lineprinter.  TTYPUTLINE is used
+# to output lines to the printer file, so that formfeeds, standout mode, etc.,
+# may be properly translated for the indicated device.
+
+procedure xh_lprint (fname, device)
+
+char	fname[ARB]
+char	device[ARB]
+
+int	out
+pointer	sp, lp, ddstr
+
+pointer	ttyodes()
+bool	streq()
+int	envgets(), lpopen(), ttygets()
+string	printer "printer"
+errchk	clgfil, xh_print_file
+
+begin
+	call smark (sp)
+	call salloc (ddstr,  SZ_DDSTR, TY_CHAR)
+
+	# Get device name.  Default is "printer", which means that the actual
+	# device name is given by the environment variable "printer".
+
+	if (streq (device, printer))
+	    if (envgets (printer, device, SZ_FNAME) <= 0)
+		call syserrs (SYS_ENVNF, printer)
+
+	# Open TTY descriptor and printer file.  We deal only with character
+	# data, so open printer as a text file.  Output the files to the line
+	# printer device.
+
+	lp = ttyodes (device)
+	if (ttygets (lp, "DD", Memc[ddstr], SZ_DDSTR) <= 0)
+	    call error (1, "missing 'DD' parameter in termcap entry")
+
+	out = lpopen (Memc[ddstr], APPEND, TEXT_FILE)
+
+	# Output file, followed by a form feed.
+	iferr {
+	    call xh_print_file (out, lp, fname)
+	    	call flush (out)
+	} then
+	    call erract (EA_WARN)
+
+	call close (out)
+	call ttycdes (lp)
+	call sfree (sp)
+end
+
+
+# XH_PRINT_FILE -- Open and print the named text file on the output file,
+# under control of the tty device descriptor LP.  Print a header on each
+# page if enabled, and formfeed at the end of the file.  The number of lines
+# per page is given by the tty descriptor.
+
+procedure xh_print_file (out, lp, fname)
+
+int	out
+pointer	lp
+char	fname[ARB]
+
+bool	one_tab_in
+int	lineno, maxlines, status, in
+pointer	sp, ip, lbuf
+int	open(), getline(), ttystati()
+errchk	salloc, open, ttystati, getline, ttyputline
+
+begin
+	call smark (sp)
+	call salloc (lbuf, SZ_LINE+1, TY_CHAR)
+
+	in = open (fname, READ_ONLY, TEXT_FILE)
+	maxlines = ttystati (lp, TTY_NLINES)
+
+	# If printer page is very wide, set page in one tabstop from left
+	# margin.
+
+	one_tab_in = (ttystati (lp, TTY_NCOLS) > WIDE_PAGE)
+	if (one_tab_in) {
+	    Memc[lbuf] = '\t'
+	    ip = lbuf + 1
+	} else
+	    ip = lbuf
+
+
+	# Format and write each page of output.  If headers are enabled,
+	# output formfeed and header between pages.
+
+	status = OK
+	while (status != EOF) {
+	    # Output one page of text.  Each output line is processed by
+	    # ttyputline to expand tabs, underline, etc.
+
+	    for (lineno=1;  lineno <= maxlines;  lineno=lineno+1) {
+		status = getline (in, Memc[ip])
+		if (status == EOF)
+		    break
+		if (Memc[ip] == '\f') {
+		    call ttyputline (out, lp, "\f", YES)
+		    call strcpy (Memc[ip+1], Memc[ip], SZ_LINE)
+		}
+		call ttyputline (out, lp, Memc[lbuf], YES)
+	    }
+	}
+
+	call close (in)
+	call sfree (sp)
+end