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+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/lib prt.c}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{License}
+<<license>>=
+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - 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.
+
+ - Neither the name of The Numerical ALgorithms Group Ltd. 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 OWNER
+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.
+*/
+@
+<<*>>=
+<<license>>
+
+#include "axiom-c-macros.h"
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include "edible.h"
+
+#include "prt.H1"
+#include "edin.H1"
+
+void
+myputchar(char c)
+{
+ if (ECHOIT)
+ putchar(c);
+ return;
+}
+
+void
+clear_buff(void)
+{
+ int count;
+
+ /*** called when spadbuf gives me a line incase there is something already
+ on the line ****/
+ if (buff_pntr > 0) {
+ /*** backup to the beginning of the line ***/
+ for (count = curr_pntr; count > 0; count--)
+ myputchar(_BKSPC);
+ /** blank over the line ***/
+ for (count = 0; count < buff_pntr; count++) {
+ myputchar(_BLANK);
+ }
+ /** back up again ***/
+ for (count = buff_pntr; count > 0; count--)
+ myputchar(_BKSPC);
+ init_buff(buff, buff_pntr);
+ init_flag(buff_flag, buff_pntr);
+ curr_pntr = buff_pntr = 0;
+ }
+}
+
+
+void
+move_end(void)
+{
+
+ /** Moves cursor to the end of the line ***/
+ if (curr_pntr == buff_pntr) {
+ putchar(_BELL);
+ }
+ else {
+ for (; curr_pntr < buff_pntr;) {
+ myputchar(buff[curr_pntr++]);
+ }
+ }
+ fflush(stdout);
+}
+
+void
+move_home(void)
+{
+
+ /*** Moves the cursor to the front of the line ***/
+ if (curr_pntr > 0) {
+ for (; curr_pntr > 0;) {
+ myputchar(_BKSPC);
+ curr_pntr--;
+ }
+ }
+ else {
+ putchar(_BELL);
+ }
+ fflush(stdout);
+
+}
+
+void
+move_fore_word(void)
+{
+ /** move the cursor to the next blank space **/
+ if (curr_pntr != buff_pntr) {
+ myputchar(buff[curr_pntr]);
+ curr_pntr++;
+ while (curr_pntr < buff_pntr && buff[curr_pntr] != ' ') {
+ myputchar(buff[curr_pntr]);
+ curr_pntr++;
+ }
+ }
+ else
+ putchar(_BELL);
+ fflush(stdout);
+ return;
+}
+
+void
+move_back_word(void)
+{
+ /*** moves the cursor to the last blank space ***/
+ if (curr_pntr > 0) {
+ myputchar(_BKSPC);
+ curr_pntr--;
+ while (curr_pntr > 0 && buff[curr_pntr - 1] != ' ') {
+ myputchar(_BKSPC);
+ curr_pntr--;
+ }
+
+ }
+ else
+ putchar(_BELL);
+ fflush(stdout);
+ return;
+}
+
+void
+delete_current_char(void)
+{
+ /** deletes the char currently above the current_pntr, if it can be **/
+ if (curr_pntr != buff_pntr) {
+ if (buff_flag[curr_pntr] == 1 || buff_flag[curr_pntr] == 0) {
+ myputchar(_BLANK);
+ myputchar(_BKSPC);
+ strcpy(&buff[curr_pntr],
+ &buff[curr_pntr + 1]);
+ flagcpy(&buff_flag[curr_pntr],
+ &buff_flag[curr_pntr + 1]);
+ buff_pntr--;
+ del_print(curr_pntr, 1);
+ }
+ else {
+ /** lets delete two of the little buggers **/
+ myputchar(_BLANK);
+ myputchar(_BLANK);
+ myputchar(_BKSPC);
+ myputchar(_BKSPC);
+ strcpy(&buff[curr_pntr],
+ &buff[curr_pntr + 2]);
+ flagcpy(&buff_flag[curr_pntr],
+ &buff_flag[curr_pntr + 2]);
+ buff_pntr -= 2;
+ del_print(curr_pntr, 2);
+ }
+ }
+ else {
+ putchar(_BELL);
+ fflush(stdout);
+ }
+ num_proc = num_proc + 3;
+}
+
+void
+delete_to_end_of_line(void)
+{
+ int count;
+
+ /*** deletes from the curr_pntr to the end of line ***/
+
+ if (curr_pntr == buff_pntr)
+ return; /** There is nothing to do **/
+
+ /** blank over the end of the line ***/
+ for (count = curr_pntr; count < buff_pntr; count++) {
+ myputchar(_BLANK);
+ }
+ /** back up again ***/
+ for (count = buff_pntr; count > curr_pntr; count--)
+ myputchar(_BKSPC);
+
+ buff_pntr = curr_pntr;
+ fflush(stdout);
+ return;
+
+}
+
+void
+delete_line(void)
+{
+ int count;
+
+ /*** deletes the entire line *****/
+
+ if (buff_pntr == 0)
+ return; /** There is nothing to do **/
+
+ /** first I have to back up to the beginning of the line ****/
+ for (count = curr_pntr; count > 0; count--)
+ myputchar(_BKSPC);
+
+ /** blank over the end of the line ***/
+ for (count = 0; count < buff_pntr; count++) {
+ myputchar(_BLANK);
+ }
+ /** back up again ***/
+ for (count = buff_pntr; count > 0; count--)
+ myputchar(_BKSPC);
+
+ /* Also clear the buffer */
+ init_buff(buff, buff_pntr);
+ init_flag(buff_flag, buff_pntr);
+ buff_pntr = curr_pntr = 0;
+
+ fflush(stdout);
+ return;
+
+}
+
+void
+printbuff(int start,int num)
+{
+ int trace;
+
+ for (trace = start; trace < start + num; trace++)
+ if (buff[trace] != '\0')
+ myputchar(buff[trace]);
+ fflush(stdout);
+}
+
+void
+del_print(int start, int num)
+{
+ int count;
+
+ /*** move the rest of the string ***/
+ for (count = start; count < buff_pntr; count++) {
+ myputchar(buff[count]);
+ }
+ /** now blank out the number of chars we are supposed to ***/
+ for (count = 0; count < num; count++)
+ myputchar(_BLANK);
+ /*** Now back up ***/
+ for (count = buff_pntr + num; count > start; count--)
+ myputchar(_BKSPC);
+ fflush(stdout);
+}
+
+
+void
+ins_print(int start,int num)
+{
+ int count;
+
+ /** write the rest of the word ***/
+ for (count = start; count < buff_pntr + num; count++) {
+ myputchar(buff[count]);
+ }
+ /** now back up to where we should be ***/
+ for (count = buff_pntr; count > start; count--)
+ myputchar(_BKSPC);
+ fflush(stdout);
+}
+
+void
+reprint(int start)
+{
+ /** simply reprints a single character **/
+ if (buff[start] == '\0')
+ myputchar(_BLANK);
+ else
+ myputchar(buff[start]);
+ myputchar(_BKSPC);
+ fflush(stdout);
+ return;
+}
+
+void
+back_up(int num_chars)
+{
+ int cnt;
+
+ for (cnt = 0; cnt < num_chars; cnt++)
+ myputchar(_BKSPC);
+ for (cnt = 0; cnt < num_chars; cnt++)
+ myputchar(_BLANK);
+ for (cnt = 0; cnt < num_chars; cnt++)
+ myputchar(_BKSPC);
+ fflush(stdout);
+
+}
+
+void
+back_it_up(int num_chars)
+{
+ int cnt;
+
+ for (cnt = 0; cnt < num_chars; cnt++)
+ myputchar(_BKSPC);
+ fflush(stdout);
+}
+
+
+void
+print_whole_buff(void)
+{
+ int trace;
+
+ for (trace = 0; trace < buff_pntr; trace++)
+ if (buff[trace] != '\0')
+ myputchar(buff[trace]);
+ fflush(stdout);
+}
+
+void
+move_ahead(void)
+{
+ /*** simply moves the pointer ahead a single word ***/
+ if (curr_pntr == buff_pntr) {
+ putchar(_BELL);
+ }
+ else {
+ if (buff_flag[curr_pntr] == 2) {
+ myputchar(buff[curr_pntr++]);
+ }
+ myputchar(buff[curr_pntr++]);
+ }
+ fflush(stdout);
+}
+
+void
+move_back(void)
+{
+ /** simply moves the cursor back one position **/
+ if (curr_pntr == 0) {
+ putchar(_BELL);
+ }
+ else {
+ if (!buff_flag[curr_pntr - 1]) {
+ myputchar(_BKSPC);
+ curr_pntr--;
+ }
+ myputchar(_BKSPC);
+ curr_pntr--;
+ }
+ fflush(stdout);
+}
+
+void
+back_over_current_char(void)
+{
+ /*** simply backs over the character behind the cursor ***/
+ if (curr_pntr == 0) {
+ putchar(_BELL);
+ }
+ else {
+ if (!buff_flag[curr_pntr - 1]) {
+ myputchar(_BKSPC);
+ myputchar(_BKSPC);
+ myputchar(_BLANK);
+ myputchar(_BLANK);
+ myputchar(_BKSPC);
+ myputchar(_BKSPC);
+ strcpy(&buff[curr_pntr - 2],
+ &buff[curr_pntr]);
+ flagcpy(&buff_flag[curr_pntr - 2],
+ &buff_flag[curr_pntr]);
+ buff_pntr -= 2;
+ curr_pntr -= 2;
+ del_print(curr_pntr, 2);
+ }
+ else {
+ myputchar(_BKSPC);
+ myputchar(_BLANK);
+ myputchar(_BKSPC);
+ strcpy(&buff[curr_pntr - 1],
+ &buff[curr_pntr]);
+ flagcpy(&buff_flag[curr_pntr - 1],
+ &buff_flag[curr_pntr]);
+ curr_pntr--;
+ buff_pntr--;
+ del_print(curr_pntr, 1);
+ }
+ }
+ fflush(stdout);
+ return;
+}
+
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}
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