175 lines
6 KiB
C
175 lines
6 KiB
C
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/* $Header: /nw/tony/src/stevie/src/RCS/param.c,v 1.10 89/08/02 10:59:10 tony Exp $
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*
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* Code to handle user-settable parameters. This is all pretty much table-
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* driven. To add a new parameter, put it in the params array, and add a
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* macro for it in param.h. If it's a numeric parameter, add any necessary
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* bounds checks to doset(). String parameters aren't currently supported.
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*/
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#include "stevie.h"
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extern long CursorSize;
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struct param params[] = {
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{ "tabstop", "ts", 4, P_NUM },
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{ "scroll", "scroll", 12, P_NUM },
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{ "report", "report", 5, P_NUM },
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{ "lines", "lines", 25, P_NUM },
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{ "vbell", "vb", TRUE, P_BOOL },
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{ "showmatch", "sm", FALSE, P_BOOL },
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{ "wrapscan", "ws", TRUE, P_BOOL },
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{ "errorbells", "eb", FALSE, P_BOOL },
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{ "showmode", "mo", FALSE, P_BOOL },
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{ "backup", "bk", FALSE, P_BOOL },
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{ "return", "cr", TRUE, P_BOOL },
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{ "list", "list", FALSE, P_BOOL },
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{ "ignorecase", "ic", FALSE, P_BOOL },
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{ "autoindent", "ai", FALSE, P_BOOL },
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{ "number", "nu", FALSE, P_BOOL },
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{ "modelines", "ml", FALSE, P_BOOL },
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{ "tildeop", "to", FALSE, P_BOOL },
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{ "terse", "terse", FALSE, P_BOOL },
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{ "cursorsize", "cs", 25, P_NUM },
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{ "highlightsearch", "hs", TRUE, P_BOOL },
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{ "columns", "co", 80, P_NUM },
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{ "hardtabs", "ht", FALSE, P_BOOL },
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{ "shiftwidth", "sw", 4, P_NUM },
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{ "", "", 0, 0, } /* end marker */
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};
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static void showparms();
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void wchangescreen();
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void
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doset(arg)
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char *arg; /* parameter string */
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{
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register int i;
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register char *s;
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bool_t did_lines = FALSE;
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bool_t state = TRUE; /* new state of boolean parms. */
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if (arg == NULL) {
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showparms(FALSE);
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return;
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}
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if (strncmp(arg, "all", 3) == 0) {
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showparms(TRUE);
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return;
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}
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if (strncmp(arg, "no", 2) == 0) {
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state = FALSE;
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arg += 2;
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}
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for (i=0; params[i].fullname[0] != NUL ;i++) {
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s = params[i].fullname;
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if (strncmp(arg, s, strlen(s)) == 0) /* matched full name */
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break;
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s = params[i].shortname;
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if (strncmp(arg, s, strlen(s)) == 0) /* matched short name */
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break;
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}
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if (params[i].fullname[0] != NUL) { /* found a match */
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if (params[i].flags & P_NUM) {
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did_lines = ((i == P_LI) || (i == P_CO));
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if (arg[strlen(s)] != '=' || state == FALSE)
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emsg("Invalid set of numeric parameter");
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else {
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params[i].value = atoi(arg+strlen(s)+1);
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params[i].flags |= P_CHANGED;
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}
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} else /* boolean */ {
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if (arg[strlen(s)] == '=')
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emsg("Invalid set of boolean parameter");
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else {
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params[i].value = state;
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params[i].flags |= P_CHANGED;
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}
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}
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} else
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emsg("Unrecognized 'set' option");
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/*
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* Update the screen in case we changed something like "tabstop"
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* or "list" that will change its appearance.
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*/
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updatescreen();
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CursorSize = P(P_CS);
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VisibleCursor();
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if (did_lines) {
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Rows = P(P_LI);
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Columns = P(P_CO);
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screenalloc(); /* allocate new screen buffers */
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screenclear();
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(void)wchangescreen(Rows, Columns);
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updatescreen();
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}
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/*
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* Check the bounds for numeric parameters here
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*/
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if (P(P_TS) <= 0 || P(P_TS) > 32) {
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emsg("Invalid tab size specified");
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P(P_TS) = 8;
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return;
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}
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if (P(P_SS) <= 0 || P(P_SS) > Rows) {
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emsg("Invalid scroll size specified");
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P(P_SS) = 12;
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return;
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}
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#ifndef TILDEOP
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if (P(P_TO)) {
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emsg("Tilde-operator not enabled");
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P(P_TO) = FALSE;
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return;
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}
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#endif
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/*
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* Check for another argument, and call doset() recursively, if
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* found. If any argument results in an error, no further
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* parameters are processed.
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*/
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while (*arg != ' ' && *arg != '\t') { /* skip to next white space */
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if (*arg == NUL)
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return; /* end of parameter list */
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arg++;
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}
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while (*arg == ' ' || *arg == '\t') /* skip to next non-white */
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arg++;
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if (*arg)
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doset(arg); /* recurse on next parameter */
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}
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static void
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showparms(all)
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bool_t all; /* show ALL parameters */
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{
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register struct param *p;
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char buf[64];
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gotocmd(TRUE, 0);
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outstr("Parameters:\r\n");
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for (p = ¶ms[0]; p->fullname[0] != NUL ;p++) {
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if (!all && ((p->flags & P_CHANGED) == 0))
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continue;
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if (p->flags & P_BOOL)
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sprintf(buf, "\t%s%s\r\n",
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(p->value ? "" : "no"), p->fullname);
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else
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sprintf(buf, "\t%s=%d\r\n", p->fullname, p->value);
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outstr(buf);
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}
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wait_return();
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}
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