static void asx(Char *vp, int subscr, Char *p) { struct varent *v = getvx(vp, subscr); free(v->vec[subscr - 1]); v->vec[subscr - 1] = globone(p, G_APPEND); }
void asx(tchar *vp, int subscr, tchar *p) { struct varent *v = getvx(vp, subscr); #ifdef TRACE tprintf("TRACE- asx()\n"); #endif xfree(v->vec[subscr - 1]); v->vec[subscr - 1] = globone(p); }
static void asx(Char *vp, int subscr, Char *p) { struct varent *v = getvx(vp, subscr); Char *prev; if (v->v_flags & VAR_READONLY) stderror(ERR_READONLY|ERR_NAME, v->v_name); prev = v->vec[subscr - 1]; cleanup_push(prev, xfree); v->vec[subscr - 1] = globone(p, G_APPEND); cleanup_until(prev); }
/*ARGSUSED*/ void dolet(Char **v, struct command *dummy) { Char *p; Char *vp, c, op; int hadsub; int subscr; USE(dummy); v++; p = *v++; if (p == 0) { prvars(); return; } do { hadsub = 0; vp = p; if (letter(*p)) for (; alnum(*p); p++) continue; if (vp == p || !letter(*vp)) stderror(ERR_NAME | ERR_VARBEGIN); if (*p == '[') { hadsub++; p = getinx(p, &subscr); } if (*p == 0 && *v) p = *v++; if ((op = *p) != 0) *p++ = 0; else stderror(ERR_NAME | ERR_ASSIGN); /* * if there is no expression after the '=' then print a "Syntax Error" * message - strike */ if (*p == '\0' && *v == NULL) stderror(ERR_NAME | ERR_ASSIGN); vp = Strsave(vp); cleanup_push(vp, xfree); if (op == '=') { c = '='; p = xset(p, &v); } else { c = *p++; if (any("+-", c)) { if (c != op || *p) stderror(ERR_NAME | ERR_UNKNOWNOP); p = Strsave(STR1); } else { if (any("<>", op)) { if (c != op) stderror(ERR_NAME | ERR_UNKNOWNOP); stderror(ERR_NAME | ERR_SYNTAX); } if (c != '=') stderror(ERR_NAME | ERR_UNKNOWNOP); p = xset(p, &v); } } cleanup_push(p, xfree); if (op == '=') { if (hadsub) asx(vp, subscr, p); else setv(vp, p, VAR_READWRITE); cleanup_ignore(p); } else if (hadsub) { struct varent *gv = getvx(vp, subscr); Char *val; val = operate(op, gv->vec[subscr - 1], p); cleanup_push(val, xfree); asx(vp, subscr, val); cleanup_ignore(val); cleanup_until(val); } else { Char *val; val = operate(op, varval(vp), p); cleanup_push(val, xfree); setv(vp, val, VAR_READWRITE); cleanup_ignore(val); cleanup_until(val); } update_vars(vp); cleanup_until(vp); } while ((p = *v++) != NULL); }
void /*ARGSUSED*/ dolet(Char **v, struct command *t) { Char *p; Char *vp, c, op; bool hadsub; int subscr; v++; p = *v++; if (p == 0) { prvars(); return; } do { hadsub = 0; vp = p; if (letter(*p)) for (; alnum(*p); p++) continue; if (vp == p || !letter(*vp)) stderror(ERR_NAME | ERR_VARBEGIN); if ((p - vp) > MAXVARLEN) stderror(ERR_NAME | ERR_VARTOOLONG); if (*p == '[') { hadsub++; p = getinx(p, &subscr); } if (*p == 0 && *v) p = *v++; if ((op = *p) != '\0') *p++ = 0; else stderror(ERR_NAME | ERR_ASSIGN); if (*p == '\0' && *v == NULL) stderror(ERR_NAME | ERR_ASSIGN); vp = Strsave(vp); if (op == '=') { c = '='; p = xset(p, &v); } else { c = *p++; if (any("+-", c)) { if (c != op || *p) stderror(ERR_NAME | ERR_UNKNOWNOP); p = Strsave(STR1); } else { if (any("<>", op)) { if (c != op) stderror(ERR_NAME | ERR_UNKNOWNOP); c = *p++; stderror(ERR_NAME | ERR_SYNTAX); } if (c != '=') stderror(ERR_NAME | ERR_UNKNOWNOP); p = xset(p, &v); } } if (op == '=') if (hadsub) asx(vp, subscr, p); else set(vp, p); else if (hadsub) { struct varent *gv = getvx(vp, subscr); asx(vp, subscr, operate(op, gv->vec[subscr - 1], p)); } else set(vp, operate(op, value(vp), p)); if (eq(vp, STRpath)) { exportpath(adrof(STRpath)->vec); dohash(NULL, NULL); } free(vp); if (c != '=') free(p); } while ((p = *v++) != NULL); }
void dolet(tchar **v) { tchar *p; tchar *vp, c, op; bool hadsub; int subscr; v++; p = *v++; if (p == 0) { prvars(); return; } do { hadsub = 0; for (vp = p; alnum(*p); p++) continue; if (vp == p || !letter(*vp)) goto letsyn; if (*p == '[') { hadsub++; p = getinx(p, &subscr); } if (*p == 0 && *v) p = *v++; if (op = *p) *p++ = 0; else goto letsyn; vp = savestr(vp); if (op == '=') { c = '='; p = xset(p, &v); } else { c = *p++; /* if (any(c, "+-")) { */ if (c == '+' || c == '-') { if (c != op || *p) goto letsyn; p = plusplus; } else { /* if (any(op, "<>")) { */ if (op == '<' || op == '>') { if (c != op) goto letsyn; c = *p++; letsyn: bferr("Syntax error"); } if (c != '=') goto letsyn; p = xset(p, &v); } } if (op == '=') if (hadsub) asx(vp, subscr, p); else set(vp, p); else if (hadsub) #ifndef V6 /* avoid bug in vax CC */ { struct varent *gv = getvx(vp, subscr); asx(vp, subscr, operate(op, gv->vec[subscr - 1], p)); } #else asx(vp, subscr, operate(op, getvx(vp, subscr)->vec[subscr - 1], p)); #endif else set(vp, operate(op, value(vp), p)); if (eq(vp, S_path /* "path" */)) { exportpath(adrof(S_path /* "path" */)->vec); dohash(xhash); } if (eq(vp, S_cdpath /* "cdpath" */)) dohash(xhash2); xfree(vp); if (c != '=') xfree(p); } while (p = *v++);