1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 28*0Sstevel@tonic-gate * Use is subject to license terms. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * cscope - interactive C symbol cross-reference 35*0Sstevel@tonic-gate * 36*0Sstevel@tonic-gate * terminal input functions 37*0Sstevel@tonic-gate */ 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #include "global.h" 40*0Sstevel@tonic-gate #include <curses.h> /* KEY_BACKSPACE, KEY_BREAK, and KEY_ENTER */ 41*0Sstevel@tonic-gate #include <setjmp.h> /* jmp_buf */ 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate static jmp_buf env; /* setjmp/longjmp buffer */ 44*0Sstevel@tonic-gate static int prevchar; /* previous, ungotten character */ 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate /* catch the interrupt signal */ 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate /*ARGSUSED*/ 49*0Sstevel@tonic-gate SIGTYPE 50*0Sstevel@tonic-gate catchint(int sig) 51*0Sstevel@tonic-gate { 52*0Sstevel@tonic-gate (void) signal(SIGINT, catchint); 53*0Sstevel@tonic-gate longjmp(env, 1); 54*0Sstevel@tonic-gate } 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* unget a character */ 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate ungetch(int c) 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate prevchar = c; 62*0Sstevel@tonic-gate return (0); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* get a character from the terminal */ 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate int 68*0Sstevel@tonic-gate mygetch(void) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate SIGTYPE (*savesig)(); /* old value of signal */ 71*0Sstevel@tonic-gate int c; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate /* change an interrupt signal to a break key character */ 74*0Sstevel@tonic-gate if (setjmp(env) == 0) { 75*0Sstevel@tonic-gate savesig = signal(SIGINT, catchint); 76*0Sstevel@tonic-gate (void) refresh(); /* update the display */ 77*0Sstevel@tonic-gate reinitmouse(); /* curses can change the menu number */ 78*0Sstevel@tonic-gate if (prevchar) { 79*0Sstevel@tonic-gate c = prevchar; 80*0Sstevel@tonic-gate prevchar = 0; 81*0Sstevel@tonic-gate } else { 82*0Sstevel@tonic-gate c = getch(); /* get a character from the terminal */ 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate } else { /* longjmp to here from signal handler */ 85*0Sstevel@tonic-gate c = KEY_BREAK; 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate (void) signal(SIGINT, savesig); 88*0Sstevel@tonic-gate return (c); 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate /* get a line from the terminal in non-canonical mode */ 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate int 94*0Sstevel@tonic-gate getline(char s[], size_t size, int firstchar, BOOL iscaseless) 95*0Sstevel@tonic-gate { 96*0Sstevel@tonic-gate int c, i = 0; 97*0Sstevel@tonic-gate int j; 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate /* if a character already has been typed */ 100*0Sstevel@tonic-gate if (firstchar != '\0') { 101*0Sstevel@tonic-gate if (iscaseless == YES) { 102*0Sstevel@tonic-gate firstchar = tolower(firstchar); 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate (void) addch((unsigned)firstchar); /* display it */ 105*0Sstevel@tonic-gate s[i++] = firstchar; /* save it */ 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate /* until the end of the line is reached */ 108*0Sstevel@tonic-gate while ((c = mygetch()) != '\r' && c != '\n' && c != KEY_ENTER && 109*0Sstevel@tonic-gate c != '\003' && c != KEY_BREAK) { 110*0Sstevel@tonic-gate if (c == erasechar() || c == '\b' || /* erase */ 111*0Sstevel@tonic-gate c == KEY_BACKSPACE) { 112*0Sstevel@tonic-gate if (i > 0) { 113*0Sstevel@tonic-gate (void) addstr("\b \b"); 114*0Sstevel@tonic-gate --i; 115*0Sstevel@tonic-gate } 116*0Sstevel@tonic-gate } else if (c == killchar()) { /* kill */ 117*0Sstevel@tonic-gate for (j = 0; j < i; ++j) { 118*0Sstevel@tonic-gate (void) addch('\b'); 119*0Sstevel@tonic-gate } 120*0Sstevel@tonic-gate for (j = 0; j < i; ++j) { 121*0Sstevel@tonic-gate (void) addch(' '); 122*0Sstevel@tonic-gate } 123*0Sstevel@tonic-gate for (j = 0; j < i; ++j) { 124*0Sstevel@tonic-gate (void) addch('\b'); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate i = 0; 127*0Sstevel@tonic-gate } else if (isprint(c) || c == '\t') { /* printable */ 128*0Sstevel@tonic-gate if (iscaseless == YES) { 129*0Sstevel@tonic-gate c = tolower(c); 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate /* if it will fit on the line */ 132*0Sstevel@tonic-gate if (i < size) { 133*0Sstevel@tonic-gate (void) addch((unsigned)c); /* display it */ 134*0Sstevel@tonic-gate s[i++] = c; /* save it */ 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate } else if (c == ctrl('X')) { 137*0Sstevel@tonic-gate /* mouse */ 138*0Sstevel@tonic-gate (void) getmouseevent(); /* ignore it */ 139*0Sstevel@tonic-gate } else if (c == EOF) { /* end-of-file */ 140*0Sstevel@tonic-gate break; 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate /* return on an empty line to allow a command to be entered */ 143*0Sstevel@tonic-gate if (firstchar != '\0' && i == 0) { 144*0Sstevel@tonic-gate break; 145*0Sstevel@tonic-gate } 146*0Sstevel@tonic-gate } 147*0Sstevel@tonic-gate s[i] = '\0'; 148*0Sstevel@tonic-gate return (i); 149*0Sstevel@tonic-gate } 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate /* ask user to enter a character after reading the message */ 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate void 154*0Sstevel@tonic-gate askforchar(void) 155*0Sstevel@tonic-gate { 156*0Sstevel@tonic-gate (void) addstr("Type any character to continue: "); 157*0Sstevel@tonic-gate (void) mygetch(); 158*0Sstevel@tonic-gate } 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate /* ask user to press the RETURN key after reading the message */ 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate void 163*0Sstevel@tonic-gate askforreturn(void) 164*0Sstevel@tonic-gate { 165*0Sstevel@tonic-gate if (linemode == NO) { 166*0Sstevel@tonic-gate (void) fprintf(stderr, "Press the RETURN key to continue: "); 167*0Sstevel@tonic-gate (void) getchar(); 168*0Sstevel@tonic-gate } 169*0Sstevel@tonic-gate } 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate /* expand the ~ and $ shell meta characters in a path */ 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate void 174*0Sstevel@tonic-gate shellpath(char *out, int limit, char *in) 175*0Sstevel@tonic-gate { 176*0Sstevel@tonic-gate char *lastchar; 177*0Sstevel@tonic-gate char *s, *v; 178*0Sstevel@tonic-gate 179*0Sstevel@tonic-gate /* skip leading white space */ 180*0Sstevel@tonic-gate while (isspace(*in)) { 181*0Sstevel@tonic-gate ++in; 182*0Sstevel@tonic-gate } 183*0Sstevel@tonic-gate lastchar = out + limit - 1; 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate /* 186*0Sstevel@tonic-gate * a tilde (~) by itself represents $HOME; followed by a name it 187*0Sstevel@tonic-gate * represents the $LOGDIR of that login name 188*0Sstevel@tonic-gate */ 189*0Sstevel@tonic-gate if (*in == '~') { 190*0Sstevel@tonic-gate *out++ = *in++; /* copy the ~ because it may not be expanded */ 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate /* get the login name */ 193*0Sstevel@tonic-gate s = out; 194*0Sstevel@tonic-gate while (s < lastchar && *in != '/' && *in != '\0' && 195*0Sstevel@tonic-gate !isspace(*in)) { 196*0Sstevel@tonic-gate *s++ = *in++; 197*0Sstevel@tonic-gate } 198*0Sstevel@tonic-gate *s = '\0'; 199*0Sstevel@tonic-gate 200*0Sstevel@tonic-gate /* if the login name is null, then use $HOME */ 201*0Sstevel@tonic-gate if (*out == '\0') { 202*0Sstevel@tonic-gate v = getenv("HOME"); 203*0Sstevel@tonic-gate } else { /* get the home directory of the login name */ 204*0Sstevel@tonic-gate v = logdir(out); 205*0Sstevel@tonic-gate } 206*0Sstevel@tonic-gate /* copy the directory name */ 207*0Sstevel@tonic-gate if (v != NULL) { 208*0Sstevel@tonic-gate (void) strcpy(out - 1, v); 209*0Sstevel@tonic-gate out += strlen(v) - 1; 210*0Sstevel@tonic-gate } else { 211*0Sstevel@tonic-gate /* login not found so ~ must be part of the file name */ 212*0Sstevel@tonic-gate out += strlen(out); 213*0Sstevel@tonic-gate } 214*0Sstevel@tonic-gate } 215*0Sstevel@tonic-gate /* get the rest of the path */ 216*0Sstevel@tonic-gate while (out < lastchar && *in != '\0' && !isspace(*in)) { 217*0Sstevel@tonic-gate 218*0Sstevel@tonic-gate /* look for an environment variable */ 219*0Sstevel@tonic-gate if (*in == '$') { 220*0Sstevel@tonic-gate /* copy the $ because it may not be expanded */ 221*0Sstevel@tonic-gate *out++ = *in++; 222*0Sstevel@tonic-gate 223*0Sstevel@tonic-gate /* get the variable name */ 224*0Sstevel@tonic-gate s = out; 225*0Sstevel@tonic-gate while (s < lastchar && *in != '/' && *in != '\0' && 226*0Sstevel@tonic-gate !isspace(*in)) { 227*0Sstevel@tonic-gate *s++ = *in++; 228*0Sstevel@tonic-gate } 229*0Sstevel@tonic-gate *s = '\0'; 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate /* get its value */ 232*0Sstevel@tonic-gate if ((v = getenv(out)) != NULL) { 233*0Sstevel@tonic-gate (void) strcpy(out - 1, v); 234*0Sstevel@tonic-gate out += strlen(v) - 1; 235*0Sstevel@tonic-gate } else { 236*0Sstevel@tonic-gate /* 237*0Sstevel@tonic-gate * var not found, so $ must be part of 238*0Sstevel@tonic-gate * the file name 239*0Sstevel@tonic-gate */ 240*0Sstevel@tonic-gate out += strlen(out); 241*0Sstevel@tonic-gate } 242*0Sstevel@tonic-gate } else { /* ordinary character */ 243*0Sstevel@tonic-gate *out++ = *in++; 244*0Sstevel@tonic-gate } 245*0Sstevel@tonic-gate } 246*0Sstevel@tonic-gate *out = '\0'; 247*0Sstevel@tonic-gate } 248