845 lines
19 KiB
C
845 lines
19 KiB
C
|
/* $Header: /src/pub/tcsh/ed.xmap.c,v 3.21 1999/06/01 20:01:32 christos Exp $ */
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/*
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* ed.xmap.c: This module contains the procedures for maintaining
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* the extended-key map.
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*
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* An extended-key (Xkey) is a sequence of keystrokes
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* introduced with an sequence introducer and consisting
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* of an arbitrary number of characters. This module maintains
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* a map (the Xmap) to convert these extended-key sequences
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* into input strings (XK_STR), editor functions (XK_CMD), or
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* unix commands (XK_EXE). It contains the
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* following externally visible functions.
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*
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* int GetXkey(ch,val);
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* CStr *ch;
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* XmapVal *val;
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*
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* Looks up *ch in map and then reads characters until a
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* complete match is found or a mismatch occurs. Returns the
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* type of the match found (XK_STR, XK_CMD, or XK_EXE).
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* Returns NULL in val.str and XK_STR for no match.
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* The last character read is returned in *ch.
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*
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* void AddXkey(Xkey, val, ntype);
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* CStr *Xkey;
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* XmapVal *val;
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* int ntype;
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*
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* Adds Xkey to the Xmap and associates the value in val with it.
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* If Xkey is already is in Xmap, the new code is applied to the
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* existing Xkey. Ntype specifies if code is a command, an
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* out string or a unix command.
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*
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* int DeleteXkey(Xkey);
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* CStr *Xkey;
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*
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* Delete the Xkey and all longer Xkeys staring with Xkey, if
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* they exists.
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*
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* Warning:
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* If Xkey is a substring of some other Xkeys, then the longer
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* Xkeys are lost!! That is, if the Xkeys "abcd" and "abcef"
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* are in Xmap, adding the key "abc" will cause the first two
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* definitions to be lost.
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*
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* void ResetXmap();
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*
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* Removes all entries from Xmap and resets the defaults.
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*
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* void PrintXkey(Xkey);
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* CStr *Xkey;
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*
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* Prints all extended keys prefixed by Xkey and their associated
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* commands.
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*
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* Restrictions:
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* -------------
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* 1) It is not possible to have one Xkey that is a
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* substring of another.
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*/
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/*-
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* Copyright (c) 1980, 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "sh.h"
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RCSID("$Id: ed.xmap.c,v 3.21 1999/06/01 20:01:32 christos Exp $")
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#include "ed.h"
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#include "ed.defns.h"
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#ifndef NULL
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#define NULL 0
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#endif
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/* Internal Data types and declarations */
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/* The Nodes of the Xmap. The Xmap is a linked list of these node
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* elements
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*/
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typedef struct Xmapnode {
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Char ch; /* single character of Xkey */
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int type;
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XmapVal val; /* command code or pointer to string, if this
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* is a leaf */
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struct Xmapnode *next; /* ptr to next char of this Xkey */
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struct Xmapnode *sibling; /* ptr to another Xkey with same prefix */
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} XmapNode;
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static XmapNode *Xmap = NULL; /* the current Xmap */
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#define MAXXKEY 100 /* max length of a Xkey for print putposes */
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static Char printbuf[MAXXKEY]; /* buffer for printing */
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/* Some declarations of procedures */
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static int TraverseMap __P((XmapNode *, CStr *, XmapVal *));
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static int TryNode __P((XmapNode *, CStr *, XmapVal *, int));
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static XmapNode *GetFreeNode __P((CStr *));
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static void PutFreeNode __P((XmapNode *));
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static int TryDeleteNode __P((XmapNode **, CStr *));
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static int Lookup __P((CStr *, XmapNode *, int));
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static int Enumerate __P((XmapNode *, int));
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static int unparsech __P((int, Char *));
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XmapVal *
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XmapCmd(cmd)
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int cmd;
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{
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static XmapVal xm;
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xm.cmd = (KEYCMD) cmd;
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return &xm;
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}
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XmapVal *
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XmapStr(str)
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CStr *str;
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{
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static XmapVal xm;
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xm.str.len = str->len;
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xm.str.buf = str->buf;
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return &xm;
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}
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/* ResetXmap():
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* Takes all nodes on Xmap and puts them on free list. Then
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* initializes Xmap with arrow keys
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*/
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void
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ResetXmap()
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{
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PutFreeNode(Xmap);
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Xmap = NULL;
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DefaultArrowKeys();
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return;
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}
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/* GetXkey():
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* Calls the recursive function with entry point Xmap
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*/
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int
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GetXkey(ch, val)
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CStr *ch;
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XmapVal *val;
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{
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return (TraverseMap(Xmap, ch, val));
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}
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/* TraverseMap():
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* recursively traverses node in tree until match or mismatch is
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* found. May read in more characters.
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*/
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static int
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TraverseMap(ptr, ch, val)
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XmapNode *ptr;
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CStr *ch;
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XmapVal *val;
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{
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Char tch;
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if (ptr->ch == *(ch->buf)) {
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/* match found */
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if (ptr->next) {
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/* Xkey not complete so get next char */
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if (GetNextChar(&tch) != 1) { /* if EOF or error */
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val->cmd = F_SEND_EOF;
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return XK_CMD;/* PWP: Pretend we just read an end-of-file */
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}
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*(ch->buf) = tch;
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return (TraverseMap(ptr->next, ch, val));
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}
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else {
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*val = ptr->val;
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if (ptr->type != XK_CMD)
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*(ch->buf) = '\0';
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return ptr->type;
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}
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}
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else {
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/* no match found here */
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if (ptr->sibling) {
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/* try next sibling */
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return (TraverseMap(ptr->sibling, ch, val));
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}
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else {
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/* no next sibling -- mismatch */
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val->str.buf = NULL;
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val->str.len = 0;
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return XK_STR;
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}
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}
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}
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void
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AddXkey(Xkey, val, ntype)
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CStr *Xkey;
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XmapVal *val;
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int ntype;
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{
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CStr cs;
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cs.buf = Xkey->buf;
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cs.len = Xkey->len;
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if (Xkey->len == 0) {
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xprintf(CGETS(9, 1, "AddXkey: Null extended-key not allowed.\n"));
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return;
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}
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if (ntype == XK_CMD && val->cmd == F_XKEY) {
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xprintf(CGETS(9, 2, "AddXkey: sequence-lead-in command not allowed\n"));
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return;
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}
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if (Xmap == NULL)
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/* tree is initially empty. Set up new node to match Xkey[0] */
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Xmap = GetFreeNode(&cs); /* it is properly initialized */
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/* Now recurse through Xmap */
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(void) TryNode(Xmap, &cs, val, ntype);
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return;
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}
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static int
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TryNode(ptr, str, val, ntype)
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XmapNode *ptr;
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CStr *str;
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XmapVal *val;
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int ntype;
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{
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/*
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* Find a node that matches *string or allocate a new one
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*/
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if (ptr->ch != *(str->buf)) {
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XmapNode *xm;
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for (xm = ptr; xm->sibling != NULL; xm = xm->sibling)
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if (xm->sibling->ch == *(str->buf))
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break;
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if (xm->sibling == NULL)
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xm->sibling = GetFreeNode(str); /* setup new node */
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ptr = xm->sibling;
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}
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str->buf++;
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str->len--;
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if (str->len == 0) {
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/* we're there */
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if (ptr->next != NULL) {
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PutFreeNode(ptr->next); /* lose longer Xkeys with this prefix */
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ptr->next = NULL;
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}
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switch (ptr->type) {
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case XK_STR:
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case XK_EXE:
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if (ptr->val.str.buf != NULL)
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xfree((ptr_t) ptr->val.str.buf);
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ptr->val.str.len = 0;
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break;
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case XK_NOD:
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case XK_CMD:
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break;
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default:
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abort();
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break;
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}
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switch (ptr->type = ntype) {
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case XK_CMD:
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ptr->val = *val;
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break;
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case XK_STR:
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case XK_EXE:
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ptr->val.str.len = (val->str.len + 1) * sizeof(Char);
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ptr->val.str.buf = (Char *) xmalloc((size_t) ptr->val.str.len);
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(void) memmove((ptr_t) ptr->val.str.buf, (ptr_t) val->str.buf,
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(size_t) ptr->val.str.len);
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ptr->val.str.len = val->str.len;
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||
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break;
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||
|
default:
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||
|
abort();
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||
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break;
|
||
|
}
|
||
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}
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else {
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||
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/* still more chars to go */
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||
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if (ptr->next == NULL)
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||
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ptr->next = GetFreeNode(str); /* setup new node */
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(void) TryNode(ptr->next, str, val, ntype);
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||
|
}
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||
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return (0);
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||
|
}
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||
|
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|
void
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ClearXkey(map, in)
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||
|
KEYCMD *map;
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||
|
CStr *in;
|
||
|
{
|
||
|
unsigned char c = (unsigned char) *(in->buf);
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||
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if ((map[c] == F_XKEY) &&
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((map == CcKeyMap && CcAltMap[c] != F_XKEY) ||
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(map == CcAltMap && CcKeyMap[c] != F_XKEY)))
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||
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(void) DeleteXkey(in);
|
||
|
}
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||
|
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||
|
int
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||
|
DeleteXkey(Xkey)
|
||
|
CStr *Xkey;
|
||
|
{
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||
|
if (Xkey->len == 0) {
|
||
|
xprintf(CGETS(9, 3, "DeleteXkey: Null extended-key not allowed.\n"));
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||
|
return (-1);
|
||
|
}
|
||
|
|
||
|
if (Xmap == NULL)
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||
|
return (0);
|
||
|
|
||
|
(void) TryDeleteNode(&Xmap, Xkey);
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
static int
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||
|
TryDeleteNode(inptr, str)
|
||
|
XmapNode **inptr;
|
||
|
CStr *str;
|
||
|
{
|
||
|
XmapNode *ptr;
|
||
|
XmapNode *prev_ptr = NULL;
|
||
|
|
||
|
ptr = *inptr;
|
||
|
/*
|
||
|
* Find a node that matches *string or allocate a new one
|
||
|
*/
|
||
|
if (ptr->ch != *(str->buf)) {
|
||
|
XmapNode *xm;
|
||
|
|
||
|
for (xm = ptr; xm->sibling != NULL; xm = xm->sibling)
|
||
|
if (xm->sibling->ch == *(str->buf))
|
||
|
break;
|
||
|
if (xm->sibling == NULL)
|
||
|
return (0);
|
||
|
prev_ptr = xm;
|
||
|
ptr = xm->sibling;
|
||
|
}
|
||
|
|
||
|
str->buf++;
|
||
|
str->len--;
|
||
|
|
||
|
if (str->len == 0) {
|
||
|
/* we're there */
|
||
|
if (prev_ptr == NULL)
|
||
|
*inptr = ptr->sibling;
|
||
|
else
|
||
|
prev_ptr->sibling = ptr->sibling;
|
||
|
ptr->sibling = NULL;
|
||
|
PutFreeNode(ptr);
|
||
|
return (1);
|
||
|
}
|
||
|
else if (ptr->next != NULL && TryDeleteNode(&ptr->next, str) == 1) {
|
||
|
if (ptr->next != NULL)
|
||
|
return (0);
|
||
|
if (prev_ptr == NULL)
|
||
|
*inptr = ptr->sibling;
|
||
|
else
|
||
|
prev_ptr->sibling = ptr->sibling;
|
||
|
ptr->sibling = NULL;
|
||
|
PutFreeNode(ptr);
|
||
|
return (1);
|
||
|
}
|
||
|
else {
|
||
|
return (0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* PutFreeNode():
|
||
|
* Puts a tree of nodes onto free list using free(3).
|
||
|
*/
|
||
|
static void
|
||
|
PutFreeNode(ptr)
|
||
|
XmapNode *ptr;
|
||
|
{
|
||
|
if (ptr == NULL)
|
||
|
return;
|
||
|
|
||
|
if (ptr->next != NULL) {
|
||
|
PutFreeNode(ptr->next);
|
||
|
ptr->next = NULL;
|
||
|
}
|
||
|
|
||
|
PutFreeNode(ptr->sibling);
|
||
|
|
||
|
switch (ptr->type) {
|
||
|
case XK_CMD:
|
||
|
case XK_NOD:
|
||
|
break;
|
||
|
case XK_EXE:
|
||
|
case XK_STR:
|
||
|
if (ptr->val.str.buf != NULL)
|
||
|
xfree((ptr_t) ptr->val.str.buf);
|
||
|
break;
|
||
|
default:
|
||
|
abort();
|
||
|
break;
|
||
|
}
|
||
|
xfree((ptr_t) ptr);
|
||
|
}
|
||
|
|
||
|
|
||
|
/* GetFreeNode():
|
||
|
* Returns pointer to an XmapNode for ch.
|
||
|
*/
|
||
|
static XmapNode *
|
||
|
GetFreeNode(ch)
|
||
|
CStr *ch;
|
||
|
{
|
||
|
XmapNode *ptr;
|
||
|
|
||
|
ptr = (XmapNode *) xmalloc((size_t) sizeof(XmapNode));
|
||
|
ptr->ch = ch->buf[0];
|
||
|
ptr->type = XK_NOD;
|
||
|
ptr->val.str.buf = NULL;
|
||
|
ptr->val.str.len = 0;
|
||
|
ptr->next = NULL;
|
||
|
ptr->sibling = NULL;
|
||
|
return (ptr);
|
||
|
}
|
||
|
|
||
|
|
||
|
/* PrintXKey():
|
||
|
* Print the binding associated with Xkey key.
|
||
|
* Print entire Xmap if null
|
||
|
*/
|
||
|
void
|
||
|
PrintXkey(key)
|
||
|
CStr *key;
|
||
|
{
|
||
|
CStr cs;
|
||
|
|
||
|
if (key) {
|
||
|
cs.buf = key->buf;
|
||
|
cs.len = key->len;
|
||
|
}
|
||
|
else {
|
||
|
cs.buf = STRNULL;
|
||
|
cs.len = 0;
|
||
|
}
|
||
|
/* do nothing if Xmap is empty and null key specified */
|
||
|
if (Xmap == NULL && cs.len == 0)
|
||
|
return;
|
||
|
|
||
|
printbuf[0] = '"';
|
||
|
if (Lookup(&cs, Xmap, 1) <= -1)
|
||
|
/* key is not bound */
|
||
|
xprintf(CGETS(9, 4, "Unbound extended key \"%S\"\n"), cs.buf);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Lookup():
|
||
|
* look for the string starting at node ptr.
|
||
|
* Print if last node
|
||
|
*/
|
||
|
static int
|
||
|
Lookup(str, ptr, cnt)
|
||
|
CStr *str;
|
||
|
XmapNode *ptr;
|
||
|
int cnt;
|
||
|
{
|
||
|
int ncnt;
|
||
|
|
||
|
if (ptr == NULL)
|
||
|
return (-1); /* cannot have null ptr */
|
||
|
|
||
|
if (str->len == 0) {
|
||
|
/* no more chars in string. Enumerate from here. */
|
||
|
(void) Enumerate(ptr, cnt);
|
||
|
return (0);
|
||
|
}
|
||
|
else {
|
||
|
/* If match put this char into printbuf. Recurse */
|
||
|
if (ptr->ch == *(str->buf)) {
|
||
|
/* match found */
|
||
|
ncnt = unparsech(cnt, &ptr->ch);
|
||
|
if (ptr->next != NULL) {
|
||
|
/* not yet at leaf */
|
||
|
CStr tstr;
|
||
|
tstr.buf = str->buf + 1;
|
||
|
tstr.len = str->len - 1;
|
||
|
return (Lookup(&tstr, ptr->next, ncnt + 1));
|
||
|
}
|
||
|
else {
|
||
|
/* next node is null so key should be complete */
|
||
|
if (str->len == 1) {
|
||
|
CStr pb;
|
||
|
printbuf[ncnt + 1] = '"';
|
||
|
printbuf[ncnt + 2] = '\0';
|
||
|
pb.buf = printbuf;
|
||
|
pb.len = ncnt + 2;
|
||
|
(void) printOne(&pb, &ptr->val, ptr->type);
|
||
|
return (0);
|
||
|
}
|
||
|
else
|
||
|
return (-1);/* mismatch -- string still has chars */
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
/* no match found try sibling */
|
||
|
if (ptr->sibling)
|
||
|
return (Lookup(str, ptr->sibling, cnt));
|
||
|
else
|
||
|
return (-1);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
Enumerate(ptr, cnt)
|
||
|
XmapNode *ptr;
|
||
|
int cnt;
|
||
|
{
|
||
|
int ncnt;
|
||
|
|
||
|
if (cnt >= MAXXKEY - 5) { /* buffer too small */
|
||
|
printbuf[++cnt] = '"';
|
||
|
printbuf[++cnt] = '\0';
|
||
|
xprintf(CGETS(9, 5,
|
||
|
"Some extended keys too long for internal print buffer"));
|
||
|
xprintf(" \"%S...\"\n", printbuf);
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
if (ptr == NULL) {
|
||
|
#ifdef DEBUG_EDIT
|
||
|
xprintf(CGETS(9, 6, "Enumerate: BUG!! Null ptr passed\n!"));
|
||
|
#endif
|
||
|
return (-1);
|
||
|
}
|
||
|
|
||
|
ncnt = unparsech(cnt, &ptr->ch); /* put this char at end of string */
|
||
|
if (ptr->next == NULL) {
|
||
|
CStr pb;
|
||
|
/* print this Xkey and function */
|
||
|
printbuf[++ncnt] = '"';
|
||
|
printbuf[++ncnt] = '\0';
|
||
|
pb.buf = printbuf;
|
||
|
pb.len = ncnt;
|
||
|
(void) printOne(&pb, &ptr->val, ptr->type);
|
||
|
}
|
||
|
else
|
||
|
(void) Enumerate(ptr->next, ncnt + 1);
|
||
|
|
||
|
/* go to sibling if there is one */
|
||
|
if (ptr->sibling)
|
||
|
(void) Enumerate(ptr->sibling, cnt);
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
|
||
|
/* PrintOne():
|
||
|
* Print the specified key and its associated
|
||
|
* function specified by val
|
||
|
*/
|
||
|
int
|
||
|
printOne(key, val, ntype)
|
||
|
CStr *key;
|
||
|
XmapVal *val;
|
||
|
int ntype;
|
||
|
{
|
||
|
struct KeyFuncs *fp;
|
||
|
unsigned char unparsbuf[200];
|
||
|
static char *fmt = "%s\n";
|
||
|
|
||
|
xprintf("%-15S-> ", key->buf);
|
||
|
if (val != NULL)
|
||
|
switch (ntype) {
|
||
|
case XK_STR:
|
||
|
case XK_EXE:
|
||
|
xprintf(fmt, unparsestring(&val->str, unparsbuf,
|
||
|
ntype == XK_STR ? STRQQ : STRBB));
|
||
|
break;
|
||
|
case XK_CMD:
|
||
|
for (fp = FuncNames; fp->name; fp++)
|
||
|
if (val->cmd == fp->func)
|
||
|
xprintf(fmt, fp->name);
|
||
|
break;
|
||
|
default:
|
||
|
abort();
|
||
|
break;
|
||
|
}
|
||
|
else
|
||
|
xprintf(fmt, key, CGETS(9, 7, "no input"));
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
unparsech(cnt, ch)
|
||
|
int cnt;
|
||
|
Char *ch;
|
||
|
{
|
||
|
if (ch == 0) {
|
||
|
printbuf[cnt++] = '^';
|
||
|
printbuf[cnt] = '@';
|
||
|
return cnt;
|
||
|
}
|
||
|
|
||
|
if (Iscntrl(*ch)) {
|
||
|
#ifndef _OSD_POSIX
|
||
|
printbuf[cnt++] = '^';
|
||
|
if (*ch == CTL_ESC('\177'))
|
||
|
printbuf[cnt] = '?';
|
||
|
else
|
||
|
printbuf[cnt] = *ch | 0100;
|
||
|
#else /*_OSD_POSIX*/
|
||
|
if (*ch == CTL_ESC('\177'))
|
||
|
{
|
||
|
printbuf[cnt++] = '^';
|
||
|
printbuf[cnt] = '?';
|
||
|
}
|
||
|
else if (Isupper(_toebcdic[_toascii[*ch]|0100])
|
||
|
|| strchr("@[\\]^_", _toebcdic[_toascii[*ch]|0100]) != NULL)
|
||
|
{
|
||
|
printbuf[cnt++] = '^';
|
||
|
printbuf[cnt] = _toebcdic[_toascii[*ch]|0100];
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
printbuf[cnt++] = '\\';
|
||
|
printbuf[cnt++] = ((*ch >> 6) & 7) + '0';
|
||
|
printbuf[cnt++] = ((*ch >> 3) & 7) + '0';
|
||
|
printbuf[cnt] = (*ch & 7) + '0';
|
||
|
}
|
||
|
#endif /*_OSD_POSIX*/
|
||
|
}
|
||
|
else if (*ch == '^') {
|
||
|
printbuf[cnt++] = '\\';
|
||
|
printbuf[cnt] = '^';
|
||
|
}
|
||
|
else if (*ch == '\\') {
|
||
|
printbuf[cnt++] = '\\';
|
||
|
printbuf[cnt] = '\\';
|
||
|
}
|
||
|
else if (*ch == ' ' || (Isprint(*ch) && !Isspace(*ch))) {
|
||
|
printbuf[cnt] = *ch;
|
||
|
}
|
||
|
else {
|
||
|
printbuf[cnt++] = '\\';
|
||
|
printbuf[cnt++] = ((*ch >> 6) & 7) + '0';
|
||
|
printbuf[cnt++] = ((*ch >> 3) & 7) + '0';
|
||
|
printbuf[cnt] = (*ch & 7) + '0';
|
||
|
}
|
||
|
return cnt;
|
||
|
}
|
||
|
|
||
|
int
|
||
|
parseescape(ptr)
|
||
|
const Char **ptr;
|
||
|
{
|
||
|
const Char *p;
|
||
|
Char c;
|
||
|
|
||
|
p = *ptr;
|
||
|
|
||
|
if ((p[1] & CHAR) == 0) {
|
||
|
xprintf(CGETS(9, 8, "Something must follow: %c\n"), *p);
|
||
|
return -1;
|
||
|
}
|
||
|
if ((*p & CHAR) == '\\') {
|
||
|
p++;
|
||
|
switch (*p & CHAR) {
|
||
|
case 'a':
|
||
|
c = CTL_ESC('\007'); /* Bell */
|
||
|
break;
|
||
|
case 'b':
|
||
|
c = CTL_ESC('\010'); /* Backspace */
|
||
|
break;
|
||
|
case 'e':
|
||
|
c = CTL_ESC('\033'); /* Escape */
|
||
|
break;
|
||
|
case 'f':
|
||
|
c = CTL_ESC('\014'); /* Form Feed */
|
||
|
break;
|
||
|
case 'n':
|
||
|
c = CTL_ESC('\012'); /* New Line */
|
||
|
break;
|
||
|
case 'r':
|
||
|
c = CTL_ESC('\015'); /* Carriage Return */
|
||
|
break;
|
||
|
case 't':
|
||
|
c = CTL_ESC('\011'); /* Horizontal Tab */
|
||
|
break;
|
||
|
case 'v':
|
||
|
c = CTL_ESC('\013'); /* Vertical Tab */
|
||
|
break;
|
||
|
case '0':
|
||
|
case '1':
|
||
|
case '2':
|
||
|
case '3':
|
||
|
case '4':
|
||
|
case '5':
|
||
|
case '6':
|
||
|
case '7':
|
||
|
{
|
||
|
register int cnt, val, ch;
|
||
|
|
||
|
for (cnt = 0, val = 0; cnt < 3; cnt++) {
|
||
|
ch = *p++ & CHAR;
|
||
|
if (ch < '0' || ch > '7') {
|
||
|
p--;
|
||
|
break;
|
||
|
}
|
||
|
val = (val << 3) | (ch - '0');
|
||
|
}
|
||
|
if ((val & 0xffffff00) != 0) {
|
||
|
xprintf(CGETS(9, 9,
|
||
|
"Octal constant does not fit in a char.\n"));
|
||
|
return 0;
|
||
|
}
|
||
|
#ifdef _OSD_POSIX
|
||
|
if (CTL_ESC(val) != val && adrof(STRwarnebcdic))
|
||
|
xprintf(/*CGETS(9, 9, no NLS-String yet!*/
|
||
|
"Warning: Octal constant \\%3.3o is interpreted as EBCDIC value.\n", val/*)*/);
|
||
|
#endif
|
||
|
c = (Char) val;
|
||
|
--p;
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
c = *p;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
else if ((*p & CHAR) == '^' && (Isalpha(p[1] & CHAR) ||
|
||
|
strchr("@^_?\\|[{]}", p[1] & CHAR))) {
|
||
|
p++;
|
||
|
#ifndef _OSD_POSIX
|
||
|
c = ((*p & CHAR) == '?') ? CTL_ESC('\177') : ((*p & CHAR) & 0237);
|
||
|
#else /*_OSD_POSIX*/
|
||
|
c = ((*p & CHAR) == '?') ? CTL_ESC('\177') : _toebcdic[_toascii[*p & CHAR] & 0237];
|
||
|
if (adrof(STRwarnebcdic))
|
||
|
xprintf(/*CGETS(9, 9, no NLS-String yet!*/
|
||
|
"Warning: Control character ^%c may be interpreted differently in EBCDIC.\n", *p & CHAR /*)*/);
|
||
|
#endif /*_OSD_POSIX*/
|
||
|
}
|
||
|
else
|
||
|
c = *p;
|
||
|
*ptr = p;
|
||
|
return (c);
|
||
|
}
|
||
|
|
||
|
|
||
|
unsigned char *
|
||
|
unparsestring(str, buf, sep)
|
||
|
CStr *str;
|
||
|
unsigned char *buf;
|
||
|
Char *sep;
|
||
|
{
|
||
|
unsigned char *b;
|
||
|
Char p;
|
||
|
int l;
|
||
|
|
||
|
b = buf;
|
||
|
if (sep[0])
|
||
|
#ifndef WINNT
|
||
|
*b++ = sep[0];
|
||
|
#else /* WINNT */
|
||
|
*b++ = CHAR & sep[0];
|
||
|
#endif /* !WINNT */
|
||
|
|
||
|
for (l = 0; l < str->len; l++) {
|
||
|
p = str->buf[l];
|
||
|
if (Iscntrl(p)) {
|
||
|
#ifndef _OSD_POSIX
|
||
|
*b++ = '^';
|
||
|
if (p == CTL_ESC('\177'))
|
||
|
*b++ = '?';
|
||
|
else
|
||
|
*b++ = (unsigned char) (p | 0100);
|
||
|
#else /*_OSD_POSIX*/
|
||
|
if (_toascii[p] == '\177' || Isupper(_toebcdic[_toascii[p]|0100])
|
||
|
|| strchr("@[\\]^_", _toebcdic[_toascii[p]|0100]) != NULL)
|
||
|
{
|
||
|
*b++ = '^';
|
||
|
*b++ = (_toascii[p] == '\177') ? '?' : _toebcdic[_toascii[p]|0100];
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
*b++ = '\\';
|
||
|
*b++ = ((p >> 6) & 7) + '0';
|
||
|
*b++ = ((p >> 3) & 7) + '0';
|
||
|
*b++ = (p & 7) + '0';
|
||
|
}
|
||
|
#endif /*_OSD_POSIX*/
|
||
|
}
|
||
|
else if (p == '^' || p == '\\') {
|
||
|
*b++ = '\\';
|
||
|
*b++ = (unsigned char) p;
|
||
|
}
|
||
|
else if (p == ' ' || (Isprint(p) && !Isspace(p))) {
|
||
|
*b++ = (unsigned char) p;
|
||
|
}
|
||
|
else {
|
||
|
*b++ = '\\';
|
||
|
*b++ = ((p >> 6) & 7) + '0';
|
||
|
*b++ = ((p >> 3) & 7) + '0';
|
||
|
*b++ = (p & 7) + '0';
|
||
|
}
|
||
|
}
|
||
|
if (sep[0] && sep[1])
|
||
|
#ifndef WINNT
|
||
|
*b++ = sep[1];
|
||
|
#else /* WINNT */
|
||
|
*b++ = CHAR & sep[1];
|
||
|
#endif /* !WINNT */
|
||
|
*b++ = 0;
|
||
|
return buf; /* should check for overflow */
|
||
|
}
|